Patent Publication Number: US-2021169290-A1

Title: Vacuum cleaner and control method thereof

Description:
CROSS-REFERENCE TO RELATED APPLICATION 
     This application claims the benefit of Korean Patent Application No. 10-2019-0163613 filed on Dec. 10, 2019 the entire disclosure of which is hereby incorporated by reference herein for all purposes. 
     BACKGROUND 
     Technical Field 
     The present disclosure relates to a method of providing customized cleaning information, a vacuum cleaner, and a control method thereof, and more particularly, to a method of providing customized cleaning information and a control method for a vacuum cleaner that performs cleaning by suctioning or wiping away dust or foreign matter from the cleaning target area. 
     BACKGROUND INFORMATION 
     In general, cleaners are home appliances that suction small pieces of garbage or dust by suctioning the air using electricity and collecting the garbage and dust in dust bins. Such cleaners are generally called vacuum cleaners. 
     Such a cleaner may be classified as a manual cleaner, which performs cleaning while the user directly moves the cleaner, and an automatic cleaner, which cleans while driving by itself. The manual cleaner i commonly classified as a canister vacuum cleaner, an upright vacuum cleaner, a hand vacuum cleaner, and a stick vacuum cleaner or the like depending on the type of the cleaner. 
     In the household cleaners, the canister vacuum cleaner was used a lot in the past, but recently, the hand vacuum cleaner and the stick vacuum cleaner, which improve the convenience of use by providing a dust box and a cleaner body integrally, have been used more commonly. 
     The canister vacuum cleaner has a main body and a suction port connected by a rubber hose or a pipe and, in some cases, can be used with a brush inserted to the suction port. 
     The hand vacuum cleaner maximizes portability. While it is lightweight, it is often short in length, which may limit the reach of the vacuum for cleaning. Therefore, it is used to clean local places such as on a desk or sofa or in a car. 
     The stick vacuum cleaner can be used while standing without requiring the user to bend down. Therefore, it is advantageous for cleaning while moving in a large area. Compared to the hand vacuum cleaner, the stick vacuum cleaner has a longer reach and can clean a wider area. Recently, modular type stick vacuum cleaners have been provided, and they are also used to actively change the cleaner type for various objects. 
     In addition, recently, the hand vacuum cleaner and the stick vacuum cleaner are provided to be used in combination, so products that improve user convenience have been released. 
     Korea Patent Publication No.10-2017-0112911 discloses an improved type of vacuum cleaner, and Korean Patent Publication No. 10-2017-0126377 discloses a vacuum cleaner charging stand that can charge the vacuum cleaner while mounting such a vacuum cleaner. According to the disclosed vacuum cleaner, various types of suction nozzles may be connected to a suction unit. 
     However, these vacuum cleaners and vacuum cleaner charging stands do not provide customized information. That is, since the vacuum cleaner does not actively provide the user with information related to cleaning, it cannot be used as an Internet of Things (TOT) device, which has recently been applied to home appliances. As used herein, the Internet of Things refers to a technology or environment in which data is sent and received in real time by attaching sensors to objects. 
     SUMMARY 
     An object of the present disclosure is to provide a method of providing customized cleaning information for a vacuum cleaner, and a control method of the vacuum cleaner. The disclosed systems and methods recognize a cleaning module that is in use in a vacuum cleaner having modular cleaning modules, and provide recommendations to a user for cleaning using the vacuum cleaner, or suggest washing or replacing the cleaning modules by using time data associated with the cleaning process. 
     In addition, the present disclosure provides a method of providing customized cleaning information, which includes generating a cleaning pattern of the user by using accumulated cleaning information, and actively providing necessary information according to the cleaning pattern. 
     In addition, the present disclosure provides a vacuum cleaner that can recognize a cleaning module coupled to the cleaner body. 
     A method of providing customized cleaning information according to an embodiment of the present disclosure includes obtaining information related to a cleaning module from a sensor of a vacuum cleaner, determining whether the cleaning module is in use among pre-registered cleaning modules based on the information related to the cleaning module, storing last used time information of the pre-registered cleaning modules based on the information related to the cleaning module, obtaining current time information, comparing the last used time information with the current time information to determine whether unused time of the cleaning module exceeds an unused time threshold specified for the cleaning module, and providing information that the cleaning module needs to be started when the unused time of the cleaning module exceeds the unused time threshold. Therefore, the present disclosure can increase convenience of use by suggesting that cleaning of a specific object is necessary to the user when it can be expected that the specific object has not been cleaned within a threshold time period. 
     In addition, the information related to the cleaning module may include information related to any one or more of current, voltage, load current and torque. 
     In addition, the method may further include storing usage time information of the pre-registered cleaning modules based on the information related to the cleaning module, determining whether accumulated usage time of the cleaning module exceeds a usage time threshold specified for the cleaning module, and providing information that the cleaning module needs to be managed when the accumulated usage time of the cleaning module exceeds the usage time threshold. Therefore, the present disclosure can actively notify that a washing or other maintenance time of the cleaning module has arrived to maintain the efficiency of the cleaner and to ensure hygienic use of the vacuum cleaner. In addition, the present disclosure can notify in advance that the replacement time of the cleaning module has arrived. 
     Here, the usage time threshold may include time information that the cleaning module needs to be washed, and the information that the cleaning module needs to be managed may include the information that the cleaning module needs to be washed. 
     Alternatively, the usage time threshold may include time information that the cleaning module needs to be replaced, and the information that the cleaning module needs to be managed may include the information that the cleaning module needs to be replaced. 
     In some embodiments, the information that the cleaning module needs to be managed may include one or more of a purchase list and a purchase site link corresponding to the cleaning module. 
     In addition, the method may further include storing separately last used time information for each usage mode of the pre-registered cleaning module based on the information of the sensor, converting the last used time information of each of the cleaning modules by applying a weight for each usage mode, and storing the last used time information for each of the cleaning modules. Therefore, the present disclosure can be managed independently for each usage mode with different loads on the driver. 
     In addition, the method may further include generating a cleaning pattern of a user using the last used time information of the stored pre-registered cleaning modules, and providing the generated cleaning pattern information of the user. Therefore, the present disclosure can suggest a necessary cleaning or propose a cleaning schedule to the user. 
     In addition, the method may further include generating a cleaning pattern of a user through the last used time information and the usage time information of the stored pre-registered cleaning modules, and providing the generated cleaning pattern information of the user, wherein the cleaning pattern information includes scheduling and operating time information of cleaning modules that need to be used. Therefore, the present disclosure can suggest a necessary cleaning or propose a cleaning schedule to the user. 
     In some embodiments, the cleaning pattern information may include a list presenting an order in which the cleaning modules need to be used, and operation time information of each cleaning module. 
     In addition, the method may further include displaying on a display of a smart device information that the cleaning module needs to be started through an application on the smart device linked to the vacuum cleaner. 
     A vacuum cleaner combined with modular cleaning modules according to another embodiment of the present disclosure may include a driver configured to transmit a suction force to the cleaning module; a sensor configured to obtain information of any one or more of current, voltage, load, and torque for the cleaning module in use; a memory configured to store information of pre-registered cleaning modules and last used time information of the cleaning module in use; a processor configured to determine the cleaning module in use by comparing the information of the memory with the information related to the cleaning module; and a first wireless transmitter configured to transmit information related to the cleaning module in use to a server. 
     In addition, the vacuum cleaner may further include a receiver configured to receive information related to a cleaning module that needs to be started from the server, and an output unit including a display or a speaker configured to provide the information related to a cleaning module that needs to be started. 
     In addition, the vacuum cleaner may further include a usage mode selection unit configured to provide a plurality of usage modes that vary the suction force of the driver, wherein the memory may store usage time information for each usage mode for the cleaning module in use, and information related to the cleaning module in use transmitted from the first wireless transmitter to the server may include the usage time information for each usage mode. 
     In some embodiments, the processor may convert information related to the cleaning module by applying a weight for each usage mode for the cleaning module in use and transmit the information to the transmitter. 
     In addition, the vacuum cleaner may further include a cleaner body configured to be provided with a connecting part detachably coupled to the cleaning module, wherein the connecting part may include a suction line configured to provide suction pressure to the cleaning module, and a second power supply line configured to be connected to a first power supply line of the cleaning module and supply power, wherein the sensor may be connected to the second power supply line to obtain current information. 
     In addition, the vacuum cleaner may further include a cleaner body configured to be provided with a connecting part detachably coupled to the cleaning module, wherein the connecting part may include a suction line configured to provide suction pressure to the cleaning module, a second power supply line configured to be connected to a first power supply line of the cleaning module and supply power, and a second communication line configured to be connected to a first communication line of the cleaning module and receive information of the cleaning module. 
     In addition, the vacuum cleaner may further include a cleaner body configured to be provided with a connecting part detachably coupled to the cleaning module, a second wireless transmitter configured to be provided in the cleaning module and transmit information of the cleaning module, and a second wireless receiver configured to be provided in the cleaner body and receive information of the second wireless transmitter, wherein the connecting part may include a suction line configured to provide suction pressure to the cleaning module, and a second power supply line configured to be connected to a first power supply line of the cleaning module and supply power. 
     According to another embodiment of the present disclosure, a method of providing customized cleaning information may be provided for using a vacuum cleaner combined with modular cleaning modules and a smart device to which an application linked to the vacuum cleaner is installed. According to the disclosed method, the vacuum cleaner obtains information related to the cleaning module from a sensor, and transmits the information to a server through a transmitter, a processor of the server or the vacuum cleaner determines whether the cleaning module is in use among pre-registered cleaning modules based on the information related to the cleaning module, a memory of the server or the vacuum cleaner stores last used time information of the pre-registered cleaning modules based on the information related to the cleaning module, wherein the processor of the server or the vacuum cleaner obtains current time information, compares the last used time information with the current time information to determine whether unused time of the cleaning module exceeds an unused time threshold specified for the cleaning module, and provides information that the cleaning module needs to be started for the smart device when the unused time of the cleaning module exceeds the unused time threshold. 
     A method of providing customized cleaning information according to the present disclosure, can increase convenience of use by suggesting that cleaning of a specific object is necessary to the user when it can be expected that the specific object has not been cleaned for a time threshold, and provide an IOT environment using the vacuum cleaner product. 
     In addition, according to at least one of the embodiments of the present disclosure, it may be possible to determine types of modular cleaning modules coupled with the vacuum cleaner, and transmit information such as usage data, load data, and contamination data of the cleaning module to the cleaner body. 
     In addition, according to at least one of the embodiments of the present disclosure, by managing the accumulated time of the cleaning module, as described above, it may be possible to increase the convenience of use and optimize the efficiency of the vacuum cleaner. 
     In addition, according to at least one of the embodiments of the present disclosure, by storing a record of each cleaning process and generating a cleaning pattern of the user by analyzing the data, it is possible to actively suggest a part that needs to be cleaned and to provide a cleaning schedule to the user. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a view illustrating a configuration for control of a vacuum cleaner according to an embodiment of the present disclosure. 
         FIG. 2  is a control block diagram of an example control system of a vacuum cleaner and a smart device. 
         FIG. 3  illustrates an apparatus for providing customized cleaning information according to an embodiment of the present disclosure. 
         FIG. 4  is a block diagram illustrating an example of a processor of  FIG. 3 . 
         FIG. 5  is an exploded perspective view illustrating a vacuum cleaner according to an embodiment. 
         FIG. 6  is a diagram illustrating a control method of a vacuum cleaner according to an embodiment. 
         FIG. 7  is a block diagram illustrating a connection relationship of a vacuum cleaner according to an embodiment. 
         FIG. 8  is a cross-sectional view illustrating a coupling part of a cleaner body and a cleaning module according to a first embodiment. 
         FIG. 9  is a plan view illustrating coupling parts of a cleaner body and a cleaning module according to a first embodiment, respectively. 
         FIG. 10  is a plan view illustrating a coupling part of a cleaner body and a cleaning module according to a second embodiment, respectively. 
         FIG. 11  is a block diagram illustrating a method of providing customized cleaning information according to a first embodiment in order of time. 
         FIG. 12  is a flowchart illustrating a method of providing customized cleaning information according to a first embodiment. 
         FIG. 13  is a flowchart illustrating a method of providing customized cleaning information according to a second embodiment. 
         FIG. 14  is a flowchart illustrating a method of providing customized cleaning information according to a third embodiment. 
         FIG. 15  is a flowchart illustrating a method of providing customized cleaning information according to a fourth embodiment. 
     
    
    
     DETAILED DESCRIPTION OF THE EMBODIMENTS 
     Hereinafter, with reference to the accompanying drawings, embodiments of the present disclosure will be described in detail. The same or similar components are given the same reference numerals and redundant description thereof will be omitted. 
     In describing the embodiments disclosed in the present disclosure, when a component is referred to as being “coupled” or “connected” to another component, it may be directly coupled to or connected to the other component, however, it should be understood that other components may exist in the middle. 
     In addition, in describing the embodiments disclosed in the present disclosure, when it is determined that the detailed description of the related known technology may obscure the gist of the embodiments disclosed in the present disclosure, the detailed description thereof will be omitted. In addition, the accompanying drawings are provided only for easy understanding of the embodiments disclosed in the present disclosure, but the technical spirit disclosed in the present disclosure is not limited by the accompanying drawings, and it should be understood that the accompanying drawings include all changes, equivalents, and substitutes included in the spirit and scope of the present disclosure. 
     It is to be understood the term “disclosure” may be replaced with terms such as document, specification, description. 
       FIG. 1  is a view illustrating a configuration for control of a vacuum cleaner  100  according to an embodiment of the present disclosure, and  FIG. 2  is a control block diagram of each component constituting a control system of a vacuum cleaner  100  and a smart device  20 . 
     Referring to  FIG. 1 , a control system of a vacuum cleaner  100  according to an embodiment of the present disclosure may include a vacuum cleaner  100 , a smart device  20  equipped with an application (“app”) for controlling or managing the vacuum cleaner  100 , a server  30  for managing the application, and a network  40  for communication among the smart device  20 , the vacuum cleaner  100 , and the server  30 . 
     Referring to  FIG. 2 , the vacuum cleaner  100  may include a processor  101 , an input unit  102 , an output unit  103 , a sensing unit  104 , a memory  105 , a communication module  106 , and a power supply  107 . 
     The processor  101  may include a controller. For example, it may include a micro controller unit (MCU), although other types of processors are also contemplated. 
     The input unit  102  may be formed in a control panel provided near a handle of the vacuum cleaner  100 , and may be provided in the form of a touch button or a push button. Alternatively, the input unit  102  may be provided in a microphone form to recognize a voice command. In addition, an input unit including a camera or an image sensor may be provided to recognize a gesture of a user. 
     The output unit  103  may include a display provided as an image output unit and a speaker provided as a sound output unit. 
     The display may be provided in the control panel or provided as a separate display area, and may include an LCD panel through which an image or a video is output. Alternatively, the display may simply include a singular light emitting unit or a plurality of light emitting units. 
     The speaker may output a selection sound, a warning sound, a cleaning start or cleaning completion notification signal, or the like. In addition, the speaker may be provided in an area other than the handle that can be grabbed by the user. 
     The sensing unit  104  may include a current sensor for detecting a current value (or voltage value) of a driver to be described later, a load sensor for detecting a load of the driver, a torque sensor for detecting a torque of the driver, and a timer for detecting an operation time and duration. 
     The memory  105  may include DRAM (RAM that requires refreshing), SRAM (RAM that does not require refreshing), ROM, EPROM, EEPROM, and the like. 
     In addition, the communication module  106  may include a wired communication module including a power line communication (PLC) capable of internet communication or a wireless communication module including WI-FI. The communication module  106  may include a transceiver or an antenna. The transceiver may include a transmitter and a receiver. 
     In addition, the vacuum cleaner  100  may include a power supply  107  and the driver for operating the vacuum cleaner  100 . The driver may include a driving motor or a motor pump. The driving motor may include a main driving motor that is installed in a cleaner body to generate a suction force and an auxiliary driving motor that is installed in a suction nozzle provided at a suction end of the vacuum cleaner to generate a rotational force of a roller and the like. 
     The smart device  20  may include any form of computing device, such as a smart phone that the user can carry. The smart device  20  may include a processor  21 , an input unit  22 , a memory  23 , a power supply  24 , a wireless communication unit  25 , a sound output unit  26 , and a display  27 . 
     The input unit  22  may include various input components, such as a touch type button for inputting a command by touching the display  27 . 
     In addition, the wireless communication unit  25  may be a wireless communication module capable of communicating with through network  40 , which may include the internet. 
     In addition, the sound output unit  26  may include a speaker. 
     According to the above configuration, the user may execute the application (app) for managing or controlling the vacuum cleaner  100  installed in the smart device  20 , and may check a management state of the vacuum cleaner  100  or input a control command through this application. In addition, the user may receive information related to the management state of the vacuum cleaner  100  stored in the server  30  through network  40  to the smart device  20 . The control command input to the smart device  20  is transmitted to the server  30  of the application through network  40 , and the server  30  may transmit a control command to the communication module  106  of the vacuum cleaner  100  through network  40 . 
     In addition, the control command received through the communication module  106  is received at the processor  101  of the vacuum cleaner  100 , and the processor  101  may control the operation of the driver according to the received control command. 
     In addition, the processor  101  of the vacuum cleaner  100  may transmit an event occurring in the cleaning process and being received from the sensing unit  104  via a wired or wireless signal through the communication module  106 . The event information transmitted through the communication module  106  of the vacuum cleaner  100  may be transmitted to the server  30  through network  40 . In addition, the server  30  may transmit the received event information to the wireless communication unit  25  of the smart device  20  through network  40 . 
     In addition, the event information received by the wireless communication unit  25  may be displayed on the display  27  by the processor  21  of the smart device  20 . 
       FIG. 3  illustrates a customized cleaning information providing apparatus  100  according to an embodiment of the present disclosure. 
     Referring to  FIG. 3 , the customized cleaning information providing apparatus  100  may include a processor  101 , an input unit  102 , an output unit  103 , a sensing unit  104 , a memory  105 , a communication module  106 , and/or a power supply  107 . 
     The processor  101  may include a controller. For example, it may include a micro controller unit (MCU). 
     The input unit  102  may include a physical button or a touch button that receives a physical signal or a touch signal from outside and a microphone that receives an audio signal based on the control of the processor  101 . In addition, the input unit  102  may include a camera or an image sensor that receives an image from outside based on the control of the processor  101 . 
     The output unit  103  may include a speaker that outputs an audio signal based on the control of the processor  101 . For example, the speaker may provide the customized cleaning information in a form of the audio signal. 
     The output unit  103  may include a display for outputting visual information based on the control of the processor  101 . The display may implement a touch screen by forming a layer structure or integrally with the touch sensor. The touch screen may function as a user input unit that provides an input interface between the customized cleaning information providing apparatus  100  and the user. For example, the display may obtain information for user registration from the user. The touch screen may further provide an output interface between the customized cleaning information providing apparatus  100  and the user. For example, the display may output the customized cleaning information to the user in the form of visual information. That is, the display may be the input interface of the customized cleaning information providing apparatus  100  and, at the same time, may be the output interface of the customized cleaning information providing apparatus  100 . 
     The sensing unit  104  may include sensors for sensing information of any one or more of a current, a voltage, a load, and a torque of the driver of the customized cleaning information providing apparatus  100 . In addition, the sensing unit  104  may include a timer capable of determining an operating time and an operating duration of the driver. In addition, the sensing unit  104  may include a camera or an image sensor to detect the user or an obstacle. 
     The memory  105  may store data that supports various functions of the customized cleaning information providing apparatus  100 . The memory  105  may store a plurality of application programs or applications driven in the customized cleaning information providing apparatus  100 , and data and instructions for operating the customized cleaning information providing apparatus  100 . At least some of these applications may be downloaded from an external server through wireless communication. In addition, at least some of these application programs may exist on the customized cleaning information providing apparatus  100  from the time of shipment for basic functions (e.g. functions of receiving and transmitting data) of the customized cleaning information providing apparatus  100 . On the other hand, the application program may be stored in the memory  105  and installed on the customized cleaning information providing apparatus  100 , so that the application program may be driven by the processor  101  to perform an operation (or function) of the customized cleaning information providing apparatus  100 . 
     The communication module  106  may include one or more modules that enable wireless communication between the customized cleaning information providing apparatus  100  and the wireless communication system, between the customized cleaning information providing apparatus  100  and other customized cleaning information providing apparatuses, or between the customized cleaning information providing apparatus  100  and the external server. In addition, the communication module  106  may include one or more modules for connecting the customized cleaning information providing apparatus  100  to one or more networks. In some embodiments, the communication module  106  may be connected to the 5G communication system. The communication module  106  may perform wireless communication with other customized cleaning information providing apparatuses, an external server or an external apparatus (e.g. a mobile terminal) through the 5G communication system. 
     The communication module  106  may include at least one of a short range communication unit and a wireless internet unit. 
     As used herein, a wireless internet unit refers to a module for wireless internet access, and may be built in or external to the customized cleaning information providing apparatus  100 . The wireless internet unit may be configured to transmit and receive wireless signals in a communication network based on wireless internet technologies. 
     The wireless internet technologies may include, for example, WLAN (Wireless LAN), Wi-Fi (Wireless-Fidelity), Wi-Fi (Wireless Fidelity) Direct, DLNA (Digital Living Network Alliance), WiBro (Wireless Broadband), WiMAX (World Interoperability for Microwave Access), HSDPA (High Speed Downlink Packet Access), HSUPA (High Speed Uplink Packet Access), LTE (Long Term Evolution), LTE-A (Long Term Evolution-Advanced), etc., and the wireless internet unit may transmit and receive data based on at least one of such wireless internet technologies or through internet technologies not listed above. 
     If the wireless internet access by WiBro, HSDPA, HSUPA, GSM, CDMA, WCDMA, LTE, LTE-A, etc. is made through a mobile communication network, the wireless internet unit for performing wireless internet access through the mobile communication network may include a mobile communication module. 
     The short range communication unit may be provided for short range communication, and the short range communication unit may support the short range communication using at least one of Bluetooth, Radio Frequency Identification (RFID), Infrared Data Association (IrDA), Ultra Wideband (UWB), ZigBee, Near Field Communication (NFC), Wireless-Fidelity (Wi-Fi), Wi-Fi Direct, and Wireless Universal Serial Bus (Wireless USB) technology. Such a short range communication unit may support wireless communication between the customized cleaning information providing apparatus  100  and the wireless communication system, between the customized cleaning information providing apparatus  100  and other customized cleaning information providing apparatuses, or between the customized cleaning information providing apparatus  100  and a network in which another mobile terminal (or an external server) is located through wireless area networks. The short range wireless communication networks may be short range wireless personal area networks. 
     Here, the other customized cleaning information providing apparatus may be an apparatus capable of exchanging (or interlocking) data with the customized cleaning information providing apparatus  100  according to the present disclosure. The short range communication unit, around the customized cleaning information providing apparatus  100 , may detect (or recognize) other customized cleaning information providing apparatuses that can communicate with the customized cleaning information providing apparatus  100 . Furthermore, when the detected other customized cleaning information providing apparatuses are customized cleaning information providing apparatuses certified to communicate with the customized cleaning information providing apparatus  100  according to the present disclosure, the processor  101  may transmit at least a part of data processed by the customized cleaning information providing apparatus  100  to the other customized cleaning information providing apparatuses through the short range communication unit. Therefore, the user of the other customized cleaning information providing apparatuses may use data processed by the customized cleaning information providing apparatus  100  through the other customized cleaning information providing apparatuses. For example, according to this, the user can receive cleaning information from the customized cleaning information providing apparatus  100 , and output the cleaning information through a display of another customized cleaning information providing apparatus  100 . 
     The power supply  107  may receive power from an external power source and an internal power source under the control of the processor  101  to supply power to each component included in the customized cleaning information providing apparatus  100 . The power supply  107  may include a battery, which may be a built-in battery or a replaceable battery. 
     According to an embodiment of the present disclosure, the processor  101  may control the input unit  102 , the output unit  103 , the sensing unit  104 , the memory  105 , the communication module  106 , and the power supply  107 . 
     According to an embodiment of the present disclosure, the processor  101  may control the input unit  102  and the output unit  103  to provide customized cleaning information. 
     According to an embodiment of the present disclosure, the processor  101  may control the sensing unit  104  to obtain information necessary for the customized cleaning information providing apparatus  100 . For example, the processor  101  may obtain current/voltage values, load values, torque values, operating time and operating duration information, user recognition information, and/or obstacle detection information from the sensing unit  104 . 
     According to another embodiment of the present disclosure, the processor  101  may obtain a plurality of images of a user&#39;s face stored in the memory  105 , and may generate and/or learn a face classification model for classifying a user&#39;s face by using (meta learning) only a predetermined number of images among the plurality of user&#39;s face images. In addition, the processor  101  may obtain images of a plurality of food items stored in the memory  105 , and may generate/learn a food classification model for classifying food using only a predetermined number of images among the plurality of food images. 
     According to an embodiment of the present disclosure, the processor  101  may control the communication module  106  to transmit the customized cleaning information to an external mobile terminal. 
     A detailed description of the function/operation of the processor  101  is provided below. 
       FIG. 4  is a block diagram illustrating an example processor of  FIG. 3 . 
     As shown in  FIG. 4 , the processor may be an artificial intelligence (“AI”) device  50 , but is not necessarily limited thereto. 
     The AI device  50  may include an electronic device including an AI module capable of performing AI processing or a server including the AI module. In addition, the AI device  50  may be included in at least a part of the customized cleaning information providing apparatus  100  illustrated in  FIG. 3  and may be provided to perform at least some of the AI processing. 
     The AI processing may include all operations related to the control of the customized cleaning information providing apparatus  100  shown in  FIG. 3 . For example, the customized cleaning information providing apparatus  100  may perform processing/determination and control signal generation through AI processing of the sensing data or the obtained data. For example, the customized cleaning information providing apparatus  100  may control an intelligent electronic device by performing AI processing of the data received through the communication unit. 
     The AI device  50  may be a client device that directly uses an AI processing result, or a device of a cloud environment that provides the AI processing result to another device. 
     The AI device  50  may include an AI processor  51 , a memory  55 , and/or a communication unit  57 . 
     The AI device  50  may be any form of computing device capable of learning neural networks, and may be implemented as various electronic devices such as a server, a desktop PC, a notebook PC, a tablet PC, and the like. 
     In some embodiments, the AI processor  51  may learn a neural network using a program stored in the memory  55 . In particular, the AI processor  51  may learn a neural network for recognizing vehicle-related data. Here, the neural network for recognizing vehicle-related data may be designed to simulate a human brain structure on a computer, and may include a plurality of network nodes having weights, which simulate the neurons of a human neural network. A plurality of network modes may transmit and receive data according to each connection relationship so that neurons simulate the synaptic activity of neurons that transmit and receive signals through synapses. Here, the neural network may include a deep learning model developed from the neural network model. In the deep learning model, the plurality of network nodes may be located at different layers and transmit and receive data according to a convolutional connection relationship. Examples of the neural network models may include various deep learning techniques, such as deep neural networks (DNNs), convolutional deep neural networks (CNNs), recurrent boltzmann machines (RNNs), restricted boltzmann machines (RBMs), and deep belief networks (DBN), and Deep Q-Network, and may be applied to fields such as computer vision, speech recognition, natural language processing, speech/signal processing, and the like. 
     The processor that performs the AI functions described above may be a general purpose processor (e.g. CPU), or may be an dedicated processor (e.g. GPU) for artificial intelligence learning. 
     The memory  55  may store various programs and data necessary for the operation of the AI device  50 . The memory  55  may be implemented as a nonvolatile memory, a volatile memory, a flash-memory, a hard disk drive (HDD), or a solid state drive (SDD), etc. The memory  55  may be accessed by the AI processor  51 , and may read/write/modify/delete/update the data by the AI processor  51 . In addition, the memory  55  may store a neural network model (e.g. deep learning model  56 ) generated through a learning algorithm for data classifying/recognizing according to an embodiment of the present disclosure. 
     In some embodiments, the AI processor  51  may include a data learning unit  52  for learning the neural network for data classification and/or recognition. The data learning unit  52  may learn a criterion defining what learning data to use to determine the data classification/recognition and how to classify and recognize the data using the learning data. The data learning unit  52  may learn the deep learning model by obtaining the learning data to be used for learning and applying the obtained learning data to the deep learning model. 
     The data learning unit  52  may be manufactured in a form of at least one hardware chip and mounted on the AI device  50 . For example, the data learning unit  52  may be manufactured in a form of a dedicated hardware chip for artificial intelligence (AI), or may be manufactured as a part of a general purpose processor (CPU) or a graphics dedicated processor (GPU) and mounted on the AI device  50 . In addition, the data learning unit  52  may be implemented as a software module. When implemented as a software module (or a program module including instructions), the software module may be stored in a computer readable non-transitory computer readable recording media. In this case, at least one software module may be provided by an operating system (OS) or by an application. 
     The data learning unit  52  may include a learning data obtaining unit  53  and a model learning unit  54 . 
     The learning data obtaining unit  53  may obtain learning data necessary for a neural network model for classifying and recognizing data. For example, the learning data obtaining unit  53  may obtain vehicle data and/or sample data for input to the neural network model as the learning data. 
     The model learning unit  54  may learn to have a criterion about how the neural network model classifies predetermined data using the obtained learning data. In this case, the model learning unit  54  may learn the neural network model through supervised learning that uses at least some of the learning data as a criterion. Alternatively, the model learning unit  54  may learn the neural network model through unsupervised learning that finds a criterion by self-learning using the learning data without guidance. In addition, the model learning unit  54  may learn the neural network model through reinforcement learning using feedback on whether the result of the situation determination according to the learning is correct. In addition, the model learning unit  54  may learn the neural network model using learning algorithms that include error back-propagation or gradient decent. 
     When the neural network model is learned, the model learning unit  54  may store the neural network model in the memory. The model learning unit  54  may store the learned neural network model in the memory of the server connected to the AI device  50  through a wired or wireless network. 
     The data learning unit  52  may further include a learning data preprocessor (not shown) and a learning data selector (not shown) in order to improve analysis results of a recognition model, or to save resources or time required for generating the recognition model. 
     The learning data preprocessor may preprocess the obtained data so that the obtained data may be used for learning for situation determination. For example, the learning data preprocessor may process the obtained data to present it in a format such that it may be used by the model learning unit  54  for image recognition. 
     In addition, the learning data selector may select data necessary for learning among the learning data obtained by the learning data obtaining unit  53  or the learning data preprocessed by the preprocessor. The selected learning data may be provided to the model learning unit  54 . For example, the learning data selector may select only data for an object included in a specific area as learning data by detecting a specific area of an image obtained through a camera of the intelligent electronic device. 
     In addition, the data learning unit  52  may further include a model evaluator (not shown) to improve analysis results of the neural network model. 
     The model evaluator may input the evaluation data into the neural network model, and when the analysis result output from the evaluation data does not satisfy a predetermined criterion, may allow the model learning unit  54  to learn again. In this case, the evaluation data may be predefined data for evaluating the recognition model. 
     For example, among the analysis results of the learned recognition model on the evaluation data, when the number or ratio of evaluation data that is not accurate in analysis results exceeds a preset threshold, the model evaluator may determine that a predetermined criterion is not satisfied. 
     The communication unit  57  may transmit the AI processing result by the AI processor  51  to an external electronic device. 
     The external electronic device may include an autonomous vehicle, a robot, a drone, an AR device, a mobile device, a home appliance, and the like. 
     For example, when the external electronic device is the autonomous vehicle, the AI device  50  may be defined as another vehicle or 5G network device that communicates with the autonomous module vehicle. On the other hand, the AI device  50  may be implemented by being functionally embedded in the autonomous module provided in the vehicle. In addition, the 5G network may include a server or a module that performs autonomous related control. 
     On the other hand, the AI device  50  illustrated in  FIG. 4  has been described to functionally be divided into the AI processor  51 , the memory  55 , the communication unit  57 , and the like, but it should be noted that the above-described components may be integrated into one module and may be referred to as an AI module. 
       FIG. 5  is an exploded perspective view illustrating a vacuum cleaner  100  according to an embodiment. 
     Referring to  FIG. 5 , a vacuum cleaner  100  may include a cleaner body  200 , a cleaning module  210  coupled to the cleaner body  200 , a length adjusting member  220  for connecting the cleaner body  200  and the cleaning module  210 , a battery  400  coupled to the cleaner body  200 , and a cleaner holder  300  on which the cleaner body  200  is mounted. 
     The cleaner body  200  may include a body part  201  in which a suction motor (not shown) for generating a suction force and a cyclone flow device (not shown) for separating dust from the suctioned air are installed, a handle part  202  connected to the back of the body part  201  and grabbed by the user, a connecting part  203  connected to the front of the body part  201  and coupled to the cleaning module  210  or the length adjusting member  220 . 
     The cleaning module  210  may include a suction part  211  that suctions dust and the like, and a coupling part  212  coupled to the cleaner body  200  or the length adjusting member  220 . 
     One end of the length adjusting member  220  may be coupled to the cleaner body  200 , and the other end of the length adjusting member  220  may be coupled to the cleaning module  210 . The length adjusting member  220  may employ a structure in which the length is variable. In some embodiments, the length adjusting member  220  may employ a material that can be elastically changed. The one end of the length adjusting member  220  may be coupled to the cleaner body  200 , and a suction part (not shown) may be provided at the other end so that a suction function can be performed without coupling of a separate cleaning module. 
     The battery  400  may be detachably connected to the body part  201  of the cleaner body  200  to supply power for driving the vacuum cleaner  100 . The battery  400  may be detachably connected to a battery accommodating part  302  of the cleaner holder  300  to be rechargeable. Two batteries  400  may be provided. One may be coupled to the cleaner body  200  to supply power, and the other may be coupled to the cleaner holder  300  to be charged. 
     The cleaner holder  300  may include a stand-type or wall-type body  301 , a battery accommodating part  302  in which the battery  400  is charged, a cleaner support part  303  which supports the cleaner body  200 , a charging part  304  electrically connected to the battery  400  coupled to the cleaner body  200 . 
     Although the drawing shows a wall-type body  301 , it may alternatively include a stand-type body (not shown) provided in a standing state on the floor. 
     The battery  400  may be electrically connected to the charging part  304  while the cleaner body  200  is supported by the cleaner support part  303 . Therefore, the user may charge the battery  400  by placing the cleaner body  200  on the cleaner holder  300 . 
     The cleaner holder  300  may be electrically connected to an external outlet  311  through a power line  310 . A current transmitted through the power line  310  may charge a first battery accommodated in the cleaner body  200  through the charging part  304  of the cleaner holder, and charge a second battery mounted on the battery accommodating part  302 . 
     In addition, in the vacuum cleaner  100 , a suction part for performing various functions may be modularly mounted on the cleaner body  200 . That is, the cleaning module  210  may be provided with a plurality of functions, and the user may use a cleaning module  210  suitable for the desired object to be cleaned in combination with the cleaner body  200 . 
     The cleaning module  210  may include a cleaning module having a basic wood floor suction port, a cleaning module having a bedding suction port, a cleaning module having a mattress suction port, a cleaning module having a carpet suction port, a cleaning module having a mop, or cleaning modules for cleaning various other surfaces. In addition, a dedicated cleaning module for performing various functions, such as for difficult to clean dust, cleaning in gaps, or for cleaning raised objects may be provided as a module. 
       FIG. 5  shows a cleaning module  221  having a 2-in-1 suction port and a cleaning module  222  having a suction hole for gaps are mounted on the cleaner holder  300 . The cleaning module  221  having the 2-in-1 suction port may be used as a basic type of attachment for cleaning a sofa or a mattress and as a brush type when cleaning a frame or furniture by adjusting the length of the brush by button operation. In addition, the cleaning module  222  having the suction hole for gaps may have an inlet formed in a narrow nozzle shape to be advantageous for suctioning dust and the like by inserting the nozzle into a narrow gap. 
       FIG. 6  is a diagram illustrating an example control method of a vacuum cleaner  100  according to an embodiment. 
     The vacuum cleaner  100  according to an embodiment of the present disclosure may be provided with a modular cleaning module  210  that is detachable, and may be used while changing an appropriate cleaning module  210  as necessary. 
     The cleaner body  200  may receive information and load information indicating which cleaning module was used from the cleaning module  210 . For example, a main circuit (MCU: Micro Controller Unit) provided in the cleaner body  200  may determine and store which cleaning module  210  is currently being used through the current value (or voltage value) measured at the power line connected to the cleaning module  210 . 
     Since the current value of the power line may vary depending on the load applied to the cleaning module  210 , the main circuit may also store and use the load information or torque information applied to the cleaning module  210 . For reference, the torque of the motor is proportional to the load current flowing through the rotor. As the load of the motor increases, the load current increases, and the torque increases to balance with the load so that stable operation can be continued. The relationship between the torque and the load current may be determined through a torque characteristic curve. 
     In addition, the main circuit may store information regarding which cleaning module  210  was used at what time and for what duration, that is, usage time information. When the usage mode is determined into strong/medium/weak according to the rotational force of the suction motor of the cleaner body  200 , the main circuit may store the usage time and usage output for each usage mode used by the user. The main circuit may transmit accumulated usage time and usage frequency information for each cleaning module used by the user to the server  30  together with the information. 
     The server  30  may provide cleaning history information to the user by using the accumulated information. In addition, the server  30  may inform that a cleaning time has arrived by analyzing a cleaning pattern of the user and recommending a cleaning type necessary to the smart device  20  or the vacuum cleaner  100 . For example, when analyzing through the accumulated data of the vacuum cleaner  100 , if the time since the last use of a bedding cleaning module exceeds two months, the application of the smart device  20  may inform the user that it is time to perform a bedding cleaning. 
     In addition, the server  30  may inform that it is time for a washing of the cleaning module  210  component, or that the cleaning module  210  has failed or the replacement time has elapsed. 
       FIG. 7  is a block diagram illustrating a connection relationship of a vacuum cleaner  100 .  FIG. 7  illustrates a plurality of potential connection relationships (a), (b), and (c), that may be implemented in vacuum cleaner  100 . 
     Referring to connection relationship (a) shown in  FIG. 7 , the cleaning module  210  and the cleaner body  200  may be physically connected through a power line, the cleaner body  200  and the server  30  may be connected by wireless communication, and the server  30  and the smart device  20  may be connected by wireless communication. 
     In some embodiments, a coupling part of the cleaning module  210  and the cleaner body  200  may transmit the suction force generated by the cleaner body  200  to the cleaning module  210 . The coupling part may include a suction pipe providing a passage for moving dust suctioned from the cleaning module  210 , and a power line for providing power to the cleaning module  210 . 
     The main circuit of the cleaner body  200  can obtain information indicating which cleaning module  210  is coupled, whether it is currently in use, and how much load or torque is applied through the current value (or voltage value) of the power line. 
     Referring to connection relationship (b) shown in  FIG. 7 , the cleaning module  210  and the cleaner body  200  may be physically connected through a power line and wired communication, the cleaner body  200  and the server  30  may be connected by wireless communication, and the server  30  and the smart device  20  may be connected by wireless communication. 
     In such embodiments, a coupling part of the cleaning module  210  and the cleaner body  200  may transmit the suction force generated by the cleaner body  200  to the cleaning module  210 , and include a suction pipe providing a passage for moving dust suctioned from the cleaning module  210 , a power line for providing power to the cleaning module  210 , and a communication line for transmitting usage information of the cleaning module  210 . 
     The main circuit of the cleaner body  200  may obtain information related to which cleaning module  210  is coupled, whether it is currently in use, and how much load or torque is applied through the information of the communication line. In some embodiments, he current (or voltage) information transmitted through the power line may include noise. When the noise is relatively large, it may not be possible to accurately identify current (or voltage) information through the power line . In this case, by using a separate communication line, only information to be obtained can be transmitted through a separate line. For example, when a bedding cleaning module is used in combination, it may be difficult to obtain usage information through the power line because the operating current may be very weak. In this case, a communication line is provided separately from the power line, thus allowing the cleaning module to transmit information through the communication line without missing information. 
     Referring to connection relationship (c) shown in  FIG. 7 , the cleaning module  210  and the cleaner body  200  may be physically connected through the power line and may be connected through wireless communication, the cleaner body  200  and the server  30  may be connected by wireless communication, and the server  30  and the smart device  20  may be connected by wireless communication. 
     The cleaning module  210  may be provided with a transmitter for wirelessly transmitting the usage information. The cleaner body  200  may be provided with a receiver for receiving information of the cleaning module  210 . 
     In addition, the main circuit of the cleaner body  200  can obtain information related to which cleaning module  210  is coupled, whether it is currently in use, and how much load is applied through the information of the receiver. Zigbee, Bluetooth, or the like are example means of wireless communication that may be used 
       FIG. 8  is a cross-sectional view illustrating an example coupling part of a cleaner body  200  and a cleaning module  210  according to a first embodiment, and  FIG. 9  is a plan view illustrating coupling parts of a cleaner body  200  and a cleaning module  210  according to a first embodiment, respectively. 
     The cleaner body  200  may form the connecting part  203  which is connected to the front of the body part  201  and is coupled to the cleaning module  210  or the length adjusting member  220 . The connecting part  203  may be provided in a form of a tube protruding in front of the body part  201 . 
     In addition, one end of the cleaning module  210  or the length adjusting member  220  may be formed with a coupling part  212  coupled to the connecting part  203 . The coupling part  212  may be provided in a tubular shape in which the connecting part  203  may be accommodated. Accordingly, the inner diameter of the coupling part  212  may be the same or slightly larger than the outer diameter of the connecting part  203 . 
     In some embodiments, the connecting part  203  and the coupling part  212  may be detachably coupled. For example, a coupling groove  203   c  may be formed as a recess in an outer circumferential surface of the connecting part  203  and a coupling protrusion  212   c  may be formed to protrude from an inner circumferential surface of the coupling part  212 . 
     The coupling protrusion  212   c  may be connected to the coupling part  212  by a hinge, and supported by an elastic member such as a coil spring. That is, when the user inserts the connecting part  203  into the inner space of the coupling part  212 , the coupling protrusion  212   c  may be pressed while pressing the elastic member, and when the insertion of the connecting part  203  is completed, the coupling protrusion  212   c  may be fitted into the coupling groove  203   c  by a restoring force of the elastic member. Therefore, the connecting part  203  and the coupling part  212  can be firmly coupled. 
     To separate the connecting part from the coupling part, a button provided on the outer circumferential surface of the coupling part  212  may be used. When the user presses the button, the coupling protrusion  212   c  connected thereto may be moved into a state in which the elastic member is pressed. That is, the coupling protrusion  212   c  may be separated from the coupling groove  203   c  to separate the connecting part  203  from the coupling part  212 . 
     The connecting part  203  may transmit a suction force generated in the cleaner body  200  to the cleaning module  210 , and may include a first suction pipe  203   a  forming a passage through which dust suctioned from the cleaning module  210  may move, and a first power connection part  203   b  for providing power to the cleaning module  210 . 
     In addition, the coupling part  212  may be provided with a second suction pipe  212   a  providing a passage through which the suction force of the connecting part  203  is transmitted and a passage through which dust suctioned by the cleaning module  210  moves, and a second power connection part  212   b  for receiving power from the first power connection part  203   b.    
     The first and second power connection parts  203   b  and  212   b  may be provided at one side of the first and second suction pipes  203   a  and  212   a  in a shape in which two terminals are connected. For example, the second power connection part  212   b  may be provided so that the positive terminal protrudes, and the first power connection part  203   b  may be provided so that the negative terminal is recessed, and the second power connection part  212   b  may be inserted. 
     That is, the suction pipes  203   a  and  212   a  and the power connection parts  203   b  and  212   b  may be simultaneously connected while the connecting part  203  and the coupling part  212  are coupled to each other. 
       FIG. 10  is a plan view illustrating a coupling part of a cleaner body  200  and a cleaning module  210  according to a second embodiment, respectively. 
     The connecting part  203  may be provided with a first suction pipe  203   a  defining a passage through which the suction force generated in the cleaner body  200  is transmitted to the cleaning module  210  and through which the dust suctioned in the cleaning module  210  moves, a first power connection part  203   b  for providing power to the cleaning module  210 , and a first information connection part  203   d  which is connected to a second information connection part  212   d  described below to receive information. 
     The coupling part  212  may be provided with a second suction pipe  212   a  forming a passage through which the suction force of the connecting part  203  is transmitted and dust suctioned from the cleaning module  210  moves, a second power connection part  212   b  for receiving power from the first power connection part  203   b,  and a second information connection part  212   d  which transmits the information of the cleaning module  210  to the main circuit of the cleaner body  200 . 
     The first and second power connection parts  203   b  and  212   b  may be provided at one side of the first and second suction pipes  203   a  and  212   a  in a shape in which two terminals are connected. For example, the second power connection part  212   b  may be provided so that the positive terminal protrudes, and the first power connection part  203   b  may be provided so that the negative terminal is recessed, and the second power connection part  212   b  may be inserted. 
     In addition, the first and second information connection parts  203   d  and  212   d  may be provided adjacent to the first and second power connection parts  203   b  and  212   b,  and may be provided in a shape to which one terminal is connected. For example, the second information connection part  212   d  may be provided so that one terminal protrudes, and the first information connection part  203   d  may be provided so that the negative terminal is recessed, and the second power connection part  212   d  may be inserted. 
     Accordingly, the suction pipes  203   a  and  212   a,  the power connection parts  203   b  and  212   b,  and the information connection parts  203   d  and  212   d  may be simultaneously connected when the connecting part  203  and the coupling part  212  are coupled to each other. 
     Hereinafter, a method of providing customized cleaning information using a vacuum cleaner according to an embodiment of the present disclosure will be described. 
       FIG. 11  is a block diagram illustrating a method of providing customized cleaning information according to a first embodiment in order of time. 
     The vacuum cleaner  100  may include a modular cleaning module  210  having various functions, and may be configured to perform various functions in combination with the modular cleaning module  210 . 
     Referring to  FIG. 11 , the user may combine the cleaning module  210  of the vacuum cleaner  100  as necessary (S 100 ). In the memory  105  (see  FIG. 3 ) of the vacuum cleaner  100 . Information of available cleaning modules may be stored in advance. For example, the cleaning module  210  may include a cleaning module having a basic wood floor suction port, a cleaning module having a bedding suction port, a cleaning module having a mattress suction port, a cleaning module having a carpet suction port, a cleaning module having a mop, etc. In addition, a dedicated cleaning module for performing various functions, such as for difficult to remove dust, narrow gaps, or cleaning raised objects may be provided as a module. 
     Next, the processor  101  (see  FIG. 3 ) of the vacuum cleaner  100  may recognize and specify which of the cleaning modules stored in the memory  105  corresponds to the combined cleaning module  210  (S 110 ). In some embodiments, although shown in  FIG. 11  as being performed by vacuum cleaner  100 , the step of recognizing the cleaning module may be performed in the server  30 . In this case, the server may recognize and specify the cleaning module after a cleaning information transmission step S 150 , described in further detail below. 
     When the user begins cleaning using the vacuum cleaner  100  (S 120 ), information received from the sensing unit  104  (see  FIG. 3 ) of the vacuum cleaner  100  is stored in the memory  105  (S 130 ). When the user mounts the vacuum cleaner  100  on the holder (S 140 ), the processor  101  may transmit information to the server  30  through the communication module  106  (S 150 ). 
     The cleaning-related information transmitted from the vacuum cleaner  100  to the server  30  may include a type of the cleaning module  210  executed, a driving start time and end time of the vacuum cleaner  100 , a duration in which the vacuum cleaner  100  is driven, a usage mode selected in the vacuum cleaner, load information applied to the vacuum cleaner  100 , contamination information of the vacuum cleaner  100  or the cleaning module  210 , or remaining battery information. 
     The server  30  may accumulate and store information transmitted from the vacuum cleaner  100  (S 160 ). For example, the server  30  may store the usage history of the vacuum cleaner  100  as data. The server  30  may determine and store information for each cleaning module  210 . 
     The server  30  may analyze the cleaning history information through the accumulated data (S 170 ). For example, the server  30  may derive information useful to the user by analyzing information related to the cleaning module  210 , such as whether the cleaning module should be used (e.g., when a time since last usage exceeds a time threshold), whether the cleaning module  210  needs to be washed or replaced (e.g., when an accumulated usage time exceeds a threshold), a remaining life of the battery, or other information. 
     In addition, the server  30  may provide a notification to the smart device  20  in which the application (“app”) synchronized with the vacuum cleaner  100  is stored (S 180 ). For example, the server  30  may provide a notification that a cleaning time of an object to be cleaned using the corresponding cleaning module  210  has arrived when a predefined time has passed since the specific cleaning module  210  has been used. Alternatively, the server  30  may provide a notification that a cleaning module  210  needs to be washed or cleaned when a threshold time since a last washing or cleaning of a specific cleaning module  210  is exceeded, or a notification that the cleaning module  210  needs to be replaced or repaired because when an accumulated usage time of a specific cleaning module  210  since the first time the cleaning module is used exceeds a usage time threshold. Alternatively, the server  30  may provide a notification that a replacement is necessary because the remaining life of the battery is short. 
       FIG. 12  is a flowchart illustrating a method of providing customized cleaning information according to a first embodiment. 
     A method of providing customized cleaning information according to the first embodiment starts by obtaining information related to the cleaning module  210  from the sensor of the vacuum cleaner  100  (S 200 ). 
     The vacuum cleaner  100  may determine and specify whether the cleaning module  210  is in use by using the obtained information (S 220 ). Alternatively, the server  30  receiving the information from the vacuum cleaner  100  may perform a task of determining the cleaning module  210 . 
     The vacuum cleaner  100  may store last used time information of the specified cleaning module  210  (S 240 ). In this step, the last used time information for each cleaning module  210  may be stored. 
     The server  30  may calculate an unused time by comparing a last used time of the cleaning module  210  and a current time, and determine whether the unused time is greater than an unused time threshold by comparing it with the unused time threshold (S 260 ). Alternatively, the determination may be performed by a processor in the vacuum cleaner  100 . 
     When the unused time of the specific cleaning module  210  is greater than the unused time threshold, the server  30  may provide a notification that the cleaning module  210  needs to be used (S 280 ). The notification may be transmitted to the vacuum cleaner  100 , or may be transmitted to the smart device  20  in which the application linked with the vacuum cleaner  100  is stored. 
     Accordingly, the user may be informed that it is time to clean a specific object through the notification. For example, if the unused time threshold for the bedding cleaning module is  30  days, and if  30  days have passed since the last time the bedding cleaning module is used, the smart phone may provide a notification that “ 30  days have passed since the last bedding cleaning. Start cleaning the bedding!”. 
       FIG. 13  is a flowchart illustrating a method of providing customized cleaning information according to a second embodiment. 
     In the method of providing customized cleaning information according to the second embodiment, additional notification information may be added as compared with the first embodiment described with reference to  FIG. 12 . The description of the steps overlapping with the first embodiment will be omitted. 
     The method of providing customized cleaning information according to the second embodiment starts by obtaining information related to the cleaning module  210  from the sensor of the vacuum cleaner  100  (S 200 ). 
     The vacuum cleaner  100  may determine and specify whether the cleaning module  210  is in use by using the obtained information (S 220 ). Alternatively, the server  30  receiving the information from the vacuum cleaner  100  may perform a task of determining the cleaning module  210 . 
     The vacuum cleaner  100  stores last used time information of the specified cleaning module  210  (S 240 ). At this time, the last used time information for each cleaning module  210  may be stored. 
     The server  30  may calculate total accumulated usage time by adding the use time of the cleaning module  210  each time it is transmitted to a use time of the cleaning module  210  accumulated so far, and may determine whether an accumulated usage time is greater than a usage time threshold by comparing it with the usage time threshold (S 270 ). Alternatively, the determination may be performed by a processor in the vacuum cleaner  100 . 
     When the accumulated usage time of the specific cleaning module  210  is greater than the usage time threshold, the server  30  may provide a notification that the cleaning module  210  needs to be washed or replaced (S 290 ). The notification may be transmitted to the vacuum cleaner  100 , or may be transmitted to the smart device  20  in which the application linked with the vacuum cleaner  100  is stored. 
     The user may be informed that it is time to wash or replace the specific cleaning module  210  through the notification. For example, if the usage time threshold for cleaning the bedding cleaning module may be  360  minutes, and if  360  minutes have passed since the last time the bedding cleaning module is cleaned, the smart phone may provide a notification that “washing of the bedding cleaning module  210  is required”. Alternatively, if the usage time threshold for replacing the bedding cleaning module is 3600 minutes, and if 3600 minutes have passed since the first time the bedding cleaning module was used , the smart phone may provide a notification that “replacement of the bedding cleaning module  210  is required”. 
       FIG. 14  is a flowchart illustrating a method of providing customized cleaning information according to a third embodiment. 
     In the method of providing customized cleaning information according to the third embodiment, various steps may be added as compared with the second embodiment described with reference to  FIG. 13 . The description of the steps overlapping with the second embodiment will be omitted. 
     The method of providing customized cleaning information according to the third embodiment starts by obtaining information related to the cleaning module  210  from the sensor of the vacuum cleaner  100  (S 200 ). 
     The vacuum cleaner  100  may determine and specify whether the cleaning module  210  is in use by using the obtained information (S 220 ). Alternatively, the server  30  receiving the information from the vacuum cleaner  100  may perform a task of determining the cleaning module  210 . 
     In addition, the vacuum cleaner  100  may determine and store usage modes of the cleaning module  210  (S 230 ). For example, a usage mode may be classified as strong/medium/weak according to the rotational force of the suction motor of the cleaner body  200 . 
     The vacuum cleaner  100  may convert the cleaning information data by applying a weight for each usage mode. For example, the strong mode may be given a weight of 3, the medium mode may be given a weight of 2, and the weak mode may be given a weight of 1, and by multiplying a weight corresponding to a total usage time in each usage mode, a new total usage time may be derived to reflect the time in each usage mode. 
     The vacuum cleaner  100  may store the last used time and usage duration information reflecting the weight in the specified cleaning module  210  (S 240 , S 250 ). 
     The subsequent steps are the same as described above with respect to  FIG. 13 . 
       FIG. 15  is a flowchart illustrating a method of providing customized cleaning information according to a fourth embodiment. 
     The method of providing customized cleaning information according to the fourth embodiment starts by obtaining information related to the cleaning module  210  from the sensor of the vacuum cleaner  100  (S 200 ). 
     The vacuum cleaner  100  may determine and specify whether the cleaning module  210  is in use by using the obtained information (S 220 ). Alternatively, the server  30  receiving the information from the vacuum cleaner  100  may perform a task of determining the cleaning module  210 . 
     The vacuum cleaner  100  may store last used time information and usage duration information of the specified cleaning module  210  (S 300 ). At this time, the last used time information and usage duration information for each cleaning module  210  may be stored. 
     The server  30  may generate a cleaning pattern of the user by using the last used time information and the usage duration information for each cleaning module  210  (S 310 ). For example, based on the recorded cleaning information of the user, a cleaning pattern, which leads to floor cleaning, then bedding cleaning, then mattresses cleaning, and finally mop cleaning, can be generated. Alternatively, the determination may be performed by a processor in the vacuum cleaner  100 . 
     The server  30  may provide the user with information related to this cleaning pattern (S 320 ). For example, the server  30  may determine the location of the cleaning step currently in progress in the cleaning pattern, and may provide the user with information related to the next object or surface to be cleaned and/or the cleaning module  210  that may be used. The notification may be transmitted to the vacuum cleaner  100 , or may be transmitted to the smart device  20  in which the application linked with the vacuum cleaner  100  is stored. 
     The user may intentionally proceed with the cleaning through the notification, and prevent the cleaning steps from being mixed or avoid accidentally missing some cleaning steps. 
     Some embodiments or other embodiments of the present disclosure described above are not mutually exclusive or distinct from one another. Some embodiments or other embodiments of the present disclosure described above may be used in combination with or combined with each configuration or function. 
     For example, it means that configuration A described in specific embodiments and/or drawings and configuration B described in other embodiments and/or drawings may be combined. In other words, even when the combination between the configurations is not described directly, it means that the combination is possible except when it is described that the combination is impossible. 
     The above detailed description should not be construed as limiting in all respects but should be considered as illustrative. The scope of the present disclosure should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the present disclosure are included in the scope of the present disclosure.