Patent Publication Number: US-2022235958-A1

Title: Air-conditioning-apparatus system

Description:
TECHNICAL FIELD 
     The present disclosure relates to an air-conditioning-apparatus system that can cause an operation terminal to display a thermal image. 
     BACKGROUND ART 
     In a weft-known air-conditioning apparatus, the temperature of a location that is to be measured is measured in a non-contact manner with an infrared sensor or other devices to acquire temperature information, and the acquired temperature information is transmitted to an image display device via a network. The image display device displays a thermal image based on the temperature information transmitted from the air-conditioning apparatus. 
     CITATION LIST 
     Patent Literature 
     Patent Literature 1: Japanese Unexamined Patent Application Publication No. 2016-65848 
     SUMMARY OF INVENTION 
     Technical Problem 
     However, in order to display a wide-angle thermal image of the entire room with the infrared sensor mounted on the air-conditioning apparatus, it is necessary to increase the number of pixels of the infrared sensor to several hundreds of thousands of pixels, and it is also necessary to arrange a large number of elements of the sensor. 
     Accordingly, it is necessary to make a larger infrared sensor and a larger housing of an air-conditioning apparatus. Consequently, the cost of the infrared sensor is increased. Therefore, in the case of using an infrared sensor generally used in the air-conditioning apparatus and having several tens to several hundreds of pixels, it is not possible to display a thermal image of the entire room for a user. 
     The present disclosure is applied in view of the above circumstances, and relates to an air-conditioning-apparatus system that can cause a thermal image of the entire room to be displayed on an operation terminal via a network even with an infrared sensor having the small number of pixels to acquire temperature information. 
     Solution to Problem 
     An air-conditioning-apparatus system according to an embodiment of the present disclosure includes: an air-conditioning apparatus including an infrared sensor and a drive control unit, the infrared sensor including a drive actuator and being capable of acquiring temperature information on a location of one part of a room, the drive control unit being configured to control the drive actuator of the infrared sensor to acquire temperature information on a plurality of locations in the room; and a remote-operation centralized control apparatus connected with the air-conditioning apparatus via a network. The air-conditioning apparatus or the remote-operation centralized control apparatus includes: a storage unit configured to store the temperature information on the plurality of locations in the room that is acquired by the infrared sensor under a control by the drive control unit; and a thermal image forming unit configured to form a thermal image of the room based on the temperature information on the plurality of locations in the room that is stored in the storage unit. 
     Advantageous Effects of Invention 
     In the air-conditioning-apparatus system according to the embodiment of the present disclosure, the thermal image forming unit forms thermal images of the plurality of locations in the room based on temperature information on the plurality of locations in the room that is stored in the storage unit, and transmits the thermal images. By virtue of such a configuration, even when an infrared sensor having a small number of pixels is used, a thermal image of the entire room can be displayed on the operation terminal. 
     Furthermore, according to the embodiment of the present disclosure, a wide-angle thermal image can be formed based on a combination of a plurality of pieces of temperature information acquired by the infrared sensor having the small number of pixels. Therefore, it is not necessary to increase the number of pixels of the infrared sensor to a larger number. Accordingly, it is not necessary to increase the size of the housing of the air-conditioning apparatus or adopt an expensive infrared sensor. 
    
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         FIG. 1  illustrates an air-conditioning-apparatus system according to Embodiment 1. 
         FIG. 2  is a function block diagram of a controller of an air-conditioning apparatus of the air-conditioning-apparatus system according to Embodiment 1. 
         FIG. 3  is a function block diagram of a controller of a remote-operation centralized control apparatus of the air-conditioning-apparatus system according to Embodiment 1. 
         FIG. 4  is a flowchart illustrating an operation of the air-conditioning-apparatus system according to Embodiment 1. 
         FIG. 5  indicates, in a room, shifts of a light distribution range of an infrared sensor of the air-conditioning apparatus of the air-conditioning-apparatus system according to Embodiment 1. 
         FIG. 6  is a flowchart indicating an operation of an operation terminal of the air-conditioning-apparatus system according to Embodiment 1. 
         FIG. 7  illustrates a thermal image displayed on the operation terminal of the air-conditioning-apparatus system according to Embodiment 1. 
         FIG. 8  is a flowchart indicating an operation of an air-conditioning-apparatus system according to Embodiment 2. 
         FIG. 9  is a function block diagram of a controller of an air-conditioning apparatus of an air-conditioning-apparatus system according to Embodiment 3. 
         FIG. 10  is a flowchart indicating an operation of the air-conditioning-apparatus system according to Embodiment 3. 
         FIG. 11  illustrates an example of time information and a thermal image that are displayed at an operation terminal of the air-conditioning-apparatus system according to Embodiment 3. 
         FIG. 12  is a function block diagram illustrating a modification of a controller  23  of a remote-operation centralized control apparatus of the air-conditioning-apparatus system according to Embodiment 3. 
         FIG. 13  is a flowchart indicating an operation of an air-conditioning-apparatus system according to Embodiment 4. 
         FIG. 14  is a flowchart indicating an operation of an operation terminal of an air-conditioning-apparatus system according to Embodiment 5. 
         FIG. 15  illustrates an image displayed on the operation terminal of the air-conditioning-apparatus system according to Embodiment 5. 
         FIG. 16  is a flowchart indicating an operation of an air-conditioning-apparatus system according to Embodiment 6. 
         FIG. 17  is an explanatory view for light distribution, at a fixed position, by an infrared sensor of the air-conditioning-apparatus system according to Embodiment 6. 
     
    
    
     DESCRIPTION OF EMBODIMENTS 
     An air-conditioning-apparatus system according to each of embodiments will be described with reference to drawings. It should be noted that in each of figures to be referred to below, components that are the same as those in a previous figure or previous figures are denoted by the same reference signs, and their descriptions will thus be omitted, except for the case where it is necessary to re-describe such a component or components. 
     Embodiment 1 
       FIG. 1  illustrates an air-conditioning-apparatus system according to Embodiment 1. 
     As illustrated in  FIG. 1 , an air-conditioning apparatus  1  is installed in a room  7  of a residence, for example. The air-conditioning apparatus  1  is operated based on remote control information from a remote control device  5  that is provided as an attachment to the air-conditioning apparatus  1 . 
     An infrared sensor  2  is attached to the air-conditioning apparatus  1 . The infrared sensor  2  achieves light distribution of infrared rays in the room  7 . In the infrared sensor  2 , a plurality of elements that acquire temperature information are arranged in a height direction and a lateral direction of the infrared sensor  2 . For example,  60  elements are arranged in the height direction, and  10  elements are arranged in the lateral direction, that is,  600  elements are arranged in total. 
     The infrared sensor  2  cannot acquire temperature information on the entire range of the room  7 , but can acquire temperature information on a certain range of the room  7  at a time. The infrared sensor  2  includes a drive actuator  2 a (see  FIG. 2 , which will be described later), and can be driven by the drive actuator  2 a. For example, when the infrared sensor  2  is driven to be rotated to the left and the right, a light distribution range of the infrared sensor  2  varies in the lateral direction. As a result, it is possible to acquire temperature information on a plurality of locations in the room  7 . Furthermore, a display portion  4  is provided at a front surface of the air-conditioning apparatus  1 , and a display on the display portion  4  varies depending on an operation of the air-conditioning apparatus  1 . The display portion  4  includes a lamp that indicates that a thermal image is in a transmissible state. 
     Also, an adaptor  3  is attached to the air-conditioning apparatus  1  to transmit and receive remote information that is different from the remote control information. In the room  7 , a router  6  is installed in the room  7  in addition to the air-conditioning apparatus  1 . The router  6  transmits information received via an external network  11  to the adaptor  3 , or transmits information received from the adaptor  3  to the external network  11 . Referring to  FIG. 1  the adaptor  3  is provided outside the air-conditioning apparatus  1 ; however, the adaptor  3  may be provided in the air-conditioning apparatus  1 . 
     An internet network  10  is connected to the external network  11 . A remote-operation centralized control apparatus  8 , such as a server, is connected to the internet network  10 . An operation terminal  9  gives an operation instruction to the air-conditioning apparatus  1 . From the outside of the room  7 , for example, when an operation instruction is given to the air-conditioning apparatus  1  using the operation terminal  9 , the operation instruction is transmitted to the remote-operation centralized control apparatus  8  via the internet network  10 . 
     Thereafter, remote information is transmitted and received between the remote-operation centralized control apparatus  8  and the adaptor  3  via the internet network  10 , the external network  11 , and the router  6 . That is, the operation instruction given by the operation terminal  9  is transmitted from the remote-operation centralized control apparatus  8  to the air-conditioning apparatus  1  via the internet network  10 , the external network  11 , and the router  6 . 
       FIG. 2  is a function block diagram of a controller  12  of the air-conditioning apparatus  1  of the air-conditioning-apparatus system according to Embodiment 1. 
     The air-conditioning apparatus  1  includes the controller  12 . The controller  12  includes an input unit  13 , an air-conditioning-apparatus indoor control unit  14 , an air-conditioning-apparatus storage unit  15 , an output unit  16 , and a remote information input/output unit  17 . 
     The input unit  13  processes, as input information, a signal regarding operation information set by a user with the remote control device  5  and a signal regarding temperature information from the infrared sensor  2 . 
     The air-conditioning-apparatus indoor control unit  14  stores information input from the input unit  13  in the air-conditioning-apparatus storage unit  15 . Furthermore, the air-conditioning-apparatus indoor control unit  14  also stores remote information input from the remote information input/output unit  17  in the air-conditioning-apparatus storage unit  15 , and outputs remote information that is to be output to the external network  11  to the remote information input/output unit  17 . 
     The air-conditioning-apparatus indoor control unit  14  performs an arithmetic determination process based on information, such as setting information stored in the air-conditioning-apparatus storage unit  15  and set in advance, the input information input from the input unit  13  and the remote information input from the remote information input/output unit  17 . The result of the arithmetic determination process is stored in the air-conditioning-apparatus storage unit  15  as output information, and is output to the output unit  16 . 
     The air-conditioning-apparatus indoor control unit  14  includes a drive control unit  14 - 1  and a thermal image forming unit  14 - 2 . 
     The drive control unit  14 - 1  controls the drive actuator  2 a of the infrared sensor  2  to acquire temperature information on a plurality of locations in the room  7 . Based on the temperature information on the plurality of locations in the room  7  that is stored in the air-conditioning-apparatus storage unit  15 , the thermal image forming unit  14 - 2  forms thermal images of the plurality of locations. Based on output information from the air-conditioning-apparatus indoor control unit  14 , the output unit  16  turns on or off the display portion  4  and controls the drive actuator  2 a of the infrared sensor  2 . 
     The remote information input/output unit  17  receives the remote information from the adaptor  3  that receives the remote information from the remote-operation centralized control apparatus  8 , and outputs the remote information to the air-conditioning-apparatus indoor control unit  14 . The remote information input/output unit  17  receives output information that corresponds to the result of the arithmetic determination processing from the air-conditioning-apparatus indoor control unit  14 . Then, the remote information input/output unit  17  outputs the received output information to the adaptor  3 . The output information output to the adaptor  3  is transmitted to the remote-operation centralized control apparatus  8  via the router  6  and the external network  11 . 
     The controller  12  is dedicated hardware or a central processing device (also referred to as a CPU, a processing device, an arithmetic device, a microprocessor, a microcomputer, or a processor) that executes a program stored in a memory. 
     In the case where the controller  12  is dedicated hardware, for example, the controller  12  corresponds to a single circuit, a composite circuit, an application specific integrated circuit (ASIC), a field programmable gate array (FPGA), or a combination of these circuits, The function units that are implemented by the controller  12  may be implemented by respective hardware or single hardware. 
     In the case where the controller  12  is a CPU, functions that are fulfilled by the controller  12  are fulfilled by software, firmware, or a combination of the software and the firmware. The software or the firmware is described as a program, and is stored in the memory. The CPU reads and executes the program stored in the memory to fulfill each of the functions of the controller  12 . The memory is, for example, a nonvolatile or volatile semiconductor memory, such as a RAM, a ROM, a flash memory, an EPROM, or an EEPROM. 
     Some of the functions of the controller  12  may be fulfilled by dedicated hardware, and some of the functions of the controller  12  may be fulfilled by software or firmware. 
       FIG. 3  is a function block diagram of a controller  23  of the remote-operation centralized control apparatus  8  of the air-conditioning-apparatus system according to Embodiment 1. The remote-operation centralized control apparatus  8  includes the controller  23 . The controller  23  of the remote-operation centralized control apparatus  8  includes an air-conditioning-apparatus remote information input/output unit  19 , a remote information control unit  20 , a remote operation storage unit  21 , and an operation-terminal information input/output unit  22 . 
     The air-conditioning-apparatus remote information input/output unit  19  processes as input information, remote information from the air-conditioning apparatus  1 , and outputs the input information to the remote information control unit  20 . The air-conditioning-apparatus remote information input/output unit  19  also processes as output information, operation information on the operation terminal  9  from the air-conditioning-apparatus remote information input/output unit  19 , and transmits the output information to the air-conditioning apparatus  1 . 
     The remote information control unit  20  stores the input information input by the air-conditioning-apparatus remote information input/output unit  19  in the remote operation storage unit  21 . The remote information control unit  20  performs an arithmetic determination process based on the input information stored in the remote operation storage unit  21 , setting information set in advance, the program, etc. The result of the arithmetic determination process is stored as output information in the remote operation storage unit  21 . The remote information control unit  20  outputs the result of the arithmetic determination process to the operation-terminal information input/output unit  22 . 
     The operation-terminal information input/output unit  22  receives a request for operation information and display content information from the operation terminal  9 , and outputs the request to the remote information control unit  20  as input information. The operation-terminal information input/output unit  22  processes a request for display information from the remote information control unit  20  as output information. The operation-terminal information input/output unit  22  transmits information to the operation terminal  9 . The transmitted information is displayed on a screen of the operation terminal  9 . 
     Regarding Embodiment 1, the air-conditioning-apparatus storage unit  15  will also be referred to as “storage unit”, and the remote information input/output unit  17  will also be referred to as “transmission unit”. 
     Next, it will be described how the air-conditioning-apparatus system according to Embodiment 1 is operated.  FIG. 4  is a flowchart indicating an operation of the air-conditioning-apparatus system according to Embodiment 1.  FIG. 5  indicates in the room  7 , shifts of a light distribution range  26  of the infrared sensor  2  of the air-conditioning apparatus  1  of the air-conditioning-apparatus system according to Embodiment 1. In  FIG. 5 , a hatched area is the light distribution range  26  in which the infrared sensor  2  can acquire temperature information. Also, in  FIG. 5 , a white arrow indicates a direction in which the infrared sensor  2  is moved when the infrared sensor  2  is driven as first driving from a start position thereof, and a black arrow indicates a direction in which the infrared sensor  2  is driven. 
     As indicated in  FIG. 4 , in the case of displaying a thermal image on the operation terminal  9 , first, the air-conditioning-apparatus indoor control unit  14  drives the infrared sensor  2  to set the light distribution range  26  of the infrared sensor  2  to an initial position (S 1 ).  FIG. 5 , (A), is a diagram illustrating a state where the light distribution range  26  of the infrared sensor  2  is set to the initial position. To set the light distribution range  26  of the infrared sensor  2  to the initial position, the infrared sensor  2  is driven and rotated until the light distribution range is located such that the infrared sensor  2  can acquire temperature information on the leftmost position of the room  7 , for example. The leftmost position is a position corresponding to the maximum value in a range where the light distribution range of the infrared sensor  2  does not reach the air-conditioning apparatus  1 . The amount of driving of the infrared sensor  2  that is driven to such a position is stored in advance in the air-conditioning-apparatus storage unit  15 . The infrared sensor  2  is driven and rotated based on the amount of driving that is stored as described above. 
     Next, the air-conditioning-apparatus indoor control unit  14  acquires temperature information from the infrared sensor  2  (S 2 ), and stores the acquired temperature information in the air-conditioning-apparatus storage unit  15 . Then, the air-conditioning-apparatus indoor control unit  14  determines whether temperature information on the entire room  7  is acquired or not (S 3 ). 
     In the case where the above rotational driving is started, with the initial position set to the leftmost position, in step S 3 , whether temperature information on the entire room is acquired or not is determined based on whether the infrared sensor  2  is rotated until the light distribution range is located such that temperature information on the rightmost position of the room  7  can be acquired by measurement, as illustrated in  FIG. 5 , (C), for example. The rightmost position is a position corresponding to the maximum value in a range where the light distribution range of the infrared sensor  2  does not cover the air-conditioning apparatus  1 , and the amount of driving or the number of times at which driving of the infrared sensor  2  is performed is stored in advance in the remote operation storage unit  21 , as in the initial position. Whether temperature information on the entire room is acquired or not is determined based on whether the light distribution range of the infrared sensor  2  reaches such a position, based on the number of driving or the number of times that is stored in the remote operation storage unit  21 . 
     In step S 3 , when the air-conditioning-apparatus indoor control unit  14  determines that temperature information on the entire room  7  is not acquired (NO in S 3 ), the air-conditioning-apparatus indoor control unit  14  drives and rotates the infrared sensor  2  rotate the infrared sensor  2  by a certain amount (S 4 ). For example, as illustrated in  FIG. 5 , (B 1 ), the infrared sensor  2  is rotated in such a manner as to prevent a gap from being provided between a light distribution range of the infrared sensor  2  that is obtained at a previous time and a light distribution range of the infrared sensor  2  that is achieved at this time. The amount of rotational driving that is performed once is stored in advance in the air-conditioning-apparatus storage unit  15 . After the infrared sensor  2  is driven, the processing returns to step S 2 , and the air-conditioning-apparatus indoor control unit  14  re-acquires temperature information and re-stores the acquired temperature information in the remote operation storage unit  21 . 
     Thereafter, until temperature information on the entire room  7  is acquired in step  33 , the acquisition of temperature information and the storage of the temperature information in the remote operation storage unit  21  are repeated while driving the infrared sensor  2  to rotate the infrared sensor  2  from the left to the right as illustrated in (B 2 ) in  FIG. 5 . 
     In contrast, in step S 3 , when determining that temperature information on the entire room  7  is acquired (YES in S 3 ), the air-conditioning-apparatus indoor control unit  14  forms a single thermal image based on a combination of a plurality of pieces of temperature information on the respective locations that are stored in the remote operation storage unit  21  (S 5 ). 
     The air-conditioning-apparatus indoor control unit  14  transmits the thermal image formed in step S 5  to the remote-operation centralized control apparatus  8  via the adaptor  3 , the router  6 , and the Internet network  10  in this order ( 36 ). The thermal image transmitted by the air-conditioning-apparatus indoor control unit  14  is stored in the remote operation storage unit  21 . 
     Thereafter, the air-conditioning-apparatus indoor control unit  14  drives and moves the infrared sensor  2  to an initial position for the infrared sensor  2  in order to re-acquire temperature information in S 1 . In Embodiment 1, after the thermal image is transmitted in step S 6 , the air-conditioning-apparatus indoor control unit  14  returns the sensor to the initial position in step S 1 . 
     In Embodiment 1, the air-conditioning-apparatus indoor control unit  14  rotates the infrared sensor  2  from an extreme left indicated in (A) in  FIG. 5  to an extreme right indicated in (C) in  FIG. 5 , and re-returns the infrared sensor  2  to the extreme left. This, however, is not limiting. After the infrared sensor  2  reaches the extreme right and a thermal image is transmitted, the air-conditioning-apparatus indoor control unit  14  may acquire temperature information by rotating the infrared sensor  2  from the extreme right toward the extreme left by a fixed amount in each step. 
       FIG. 6  is a flowchart indicating an operation of the operation terminal  9  of the air-conditioning-apparatus system according to Embodiment 1. 
     When an operation to acquire a thermal image is performed, the operation terminal  9  acquires the thermal image stored in the remote operation storage unit  21  via the internet network  10  (S 100 ). 
     The operation terminal  9  receives the thermal image transmitted in step S 100 , and displays the received thermal image (S 101 ).  FIG. 7  illustrates the thermal image displayed on the operation terminal  9  of the air-conditioning-apparatus system according to Embodiment 1. 
     The remote-operation centralized control apparatus  8  may be configured to select any of a plurality of thermal images each of which is transmitted from the air-conditioning apparatus  1  and which are stored in the remote operation storage unit  21 , when the operation to acquire a thermal image is performed by a user with the operation terminal  9 . 
     Therefore, in the air-conditioning-apparatus system according to Embodiment 1, a wide-angle thermal image can be formed based on a combination of a plurality of pieces of temperature information that are acquired by the infrared sensor  2 , which has a small number of pixels that acquire temperature information. Therefore, a wide-angle thermal image can be acquired without increasing the number of pixels of the infrared sensor  2  to a large number of pixels. Therefore, it is not necessary to increase the size of the housing of the air-conditioning apparatus  1  or adopt an expensive infrared sensor  2 . 
     Embodiment 2 
     In Embodiment 1, a thermal image is formed by the air-conditioning apparatus  1  on the basis of acquired temperature information. In Embodiment 2, it will be described how a thermal image is formed by the remote-operation centralized control apparatus  8 . Specifically, in Embodiment 2, the remote information control unit  20  of the remote-operation centralized control apparatus  8  has the function of the thermal image forming unit  14 - 2  of the air-conditioning-apparatus indoor control unit  14 . 
       FIG. 8  is a flowchart indicating an operation of an air-conditioning-apparatus system according to Embodiment 2. Regarding Embodiment 2, components that are the same as those in Embodiment 1 will be denoted by the same reference signs, and their descriptions will thus be omitted. Embodiment 2 will be described by referring mainly to the differences between Embodiments 1 and 2. 
     In Embodiment 2, in the case of displaying a thermal image on the operation terminal  9 , first, the air-conditioning-apparatus indoor control unit  14  of the air-conditioning apparatus  1  drives and moves the infrared sensor  2  to the initial position for the infrared sensor  2  and to set the light distribution range  26  of the infrared sensor  2  to the initial position for light distribution (S 1 ). 
     Next, the air-conditioning-apparatus indoor control unit  14  acquires temperature information from the infrared sensor  2  (S 2 ). The air-conditioning-apparatus indoor control unit  14  stores the acquired temperature information in the air-conditioning-apparatus storage unit  15 . Then, the air-conditioning-apparatus indoor control unit  14  determines whether temperature information on the entire room  7  is acquired or not (S 3 ). 
     In step S 3 , when determining in step S 3  that temperature information on the entire room  7  is not acquired (NO in S 3 ), the air-conditioning-apparatus indoor control unit  14  transmits temperature information acquired in step S 2  to the remote-operation centralized control apparatus  8  via the adaptor  3 , the router  6 , and the internee network  10  in this order (S 601 ). The remote information control unit  20  of the remote-operation centralized control apparatus  8  receives the transmitted temperature information, and stores the received temperature information in the remote operation storage unit  21 . 
     Thereafter, as in Embodiment 1, the infrared sensor  2  is driven by a certain amount until temperature information on the entire room  7  is acquired (S 4 ), and the acquisition of temperature information and the transmission of the temperature information to the remote-operation centralized control apparatus  8  are repeated. 
     In step  33 , when determining that the acquisition of temperature information on the entire room  7  is completed (YES in S 3 ), the air-conditioning-apparatus indoor control unit  14  transmits the temperature information along with an acquisition completion flag indicating the completion of the acquisition of temperature information on the entire room  7  to the remote-operation centralized control apparatus  8  (S 602 ). When receiving the acquisition completion flag, the remote-operation centralized control apparatus  8  can recognize reception of all the temperature information on the entire room  7 . 
     The remote information control unit  20  of the remote-operation centralized control apparatus  8  forms a thermal image based on the temperature information stored in the remote operation storage unit  21 , and transmits the thermal image to the operation terminal  9  ( 3603 ). In the case of forming a new thermal image, the processing returns to step S 1 . 
     Therefore, in the air-conditioning-apparatus system according to Embodiment 2, since the remote-operation centralized control apparatus  8  performs processing of forming a thermal image, the air-conditioning apparatus  1  does not perform complicated image processing. Therefore, it is possible to reduce the storage area of the air-conditioning apparatus  1 , that is, it is possible to obtain this advantage in addition to the advantages obtained by the air-conditioning-apparatus system of Embodiment 1. 
     Embodiment 3 
     In Embodiment 1, a thermal image is displayed on the operation terminal  9  without any change. Temperature information is acquired a number of times, and thus in some cases, a long time is required to form a single thermal image. In Embodiment 3, the user can grasp time at which a thermal image is formed. Regarding Embodiment 3, components that are the same as those in Embodiment 1 will be denoted by the same reference signs, and their descriptions will thus be omitted. Embodiment 3 will be described by referring mainly to the differences between Embodiments 1 and 3. 
       FIG. 9  is a function block diagram of the controller  12  of the air-conditioning apparatus  1  of an air-conditioning-apparatus system according to Embodiment 3. 
     In Embodiment 3, the controller  12  includes a time determination unit  24 . The time determination unit  24  determines time information indicating the time at which a thermal image is formed by the thermal image forming unit  14 - 2 , The air-conditioning-apparatus indoor control unit  14  stores the time information determined by the time determination unit  24  in the air-conditioning-apparatus storage unit  15 . 
     The air-conditioning-apparatus storage unit  15  stores the formed thermal image and the determined time information in addition to temperature information and other information. The remote information input/output unit  17  transmits the thermal image and the time information to the remote-operation centralized control apparatus  8 . The transmitted thermal image and time information are transmitted from the remote-operation centralized control apparatus  8  to the operation terminal  9 , and are displayed on the operation terminal  9 . 
       FIG. 10  is a flowchart indicating an operation of the air-conditioning-apparatus system according to Embodiment 3. The processes of steps S 1  to S 5  are substantially equal to processes indicated in the flowchart in  FIG. 4  relating to Embodiment 1. After a thermal image is formed in step S 5 , the thermal image forming unit  14 - 2  stores, in the air-conditioning-apparatus storage unit  15 , time information determined by the time determination unit  24  and indicating time at which the thermal image is formed (S 701 ). Thereafter, the remote information input/output unit  17  transmits the thermal image and the time information to the remote-operation centralized control apparatus  8  (S 702 ). 
     Thereafter, when the operation to acquire a thermal image is performed with the operation terminal  9 , the thermal image and the time information transmitted to the remote-operation centralized control apparatus  8  in step S 702  are displayed on the operation terminal  9 .  FIG. 11  illustrates an example of time information and a thermal image that are displayed on the operation terminal  9  of the air-conditioning-apparatus system according to Embodiment 3. 
     In Embodiment 3, the air-conditioning apparatus  1  determines the time at which the thermal image is formed. However, as in Embodiment 2, temperature information may be transmitted from the air-conditioning apparatus  1  to the remote-operation centralized control apparatus  8 , each time a thermal image and time information are required to be formed by the remote-operation centralized control apparatus  8 . 
       FIG. 12  is a function block diagram illustrating a modification of the controller  23  of the remote-operation centralized control apparatus  8  of the air-conditioning-apparatus system according to Embodiment 3. In  FIG. 12 , components that are the same as in  FIG. 3  are denoted by the same reference signs, and the following description is made with respect to components in  FIG. 12  that are different from the components in  FIG. 3 . 
     As illustrated in  FIG. 12 , a time determination unit  25  is provided in the remote-operation centralized control apparatus  8 . The remote information control unit  20  stores, in the remote operation storage unit  21 , time information on time at which last temperature information is acquired from the air-conditioning apparatus  1 , and which is determined by the time determination unit  25 , The operation terminal  9  may display a thermal image and the time information stored in the remote operation storage unit  21 . 
     Therefore, in the air-conditioning-apparatus system according to Embodiment 3, it is possible to obtain an advantage of accurately notifying the user of the time at which thermal image information is formed, even in the case where it requires a long time to form a single thermal image, in addition to the advantages of the air-conditioning-apparatus systems of Embodiments 1 and 2. 
     Embodiment 4 
     Regarding Embodiments 1 to 3, it is described above how acquired temperature information is displayed as a thermal image. However, in a thermal image displayed in a high resolution, in some cases, the state of a room and the profile of a person are displayed in detail, and it is therefore necessary to pay attention to the protection of privacy. An air-conditioning-apparatus system according to Embodiment 4 enables the user to determine whether acquisition of temperature information is necessary or not and whether temperature information can be acquired or not. 
       FIG. 13  is a flowchart indicating an operation of the air-conditioning-apparatus system according to Embodiment 4, Regarding Embodiment 4, components that are the same as those in Embodiment 1 will be denoted by the same reference sings, and their descriptions will be omitted, Embodiment 4 will be described by referring mainly to the differences between Embodiments 1 and 4. 
     First, the air-conditioning-apparatus indoor control unit  14  confirms whether a thermal image can be transmitted or not (S 800 ). For example, to determine whether the thermal image can be transmitted, the remote control device  5  is additionally given in advance a function of setting whether to acquire a thermal image and transmit the thermal image to the remote-operation centralized control apparatus  8 . 
     The remote control device  5  transmits to the air-conditioning apparatus  1 , thermal-image transmission possibility/impossibility information indicating whether a thermal image formed by the thermal image forming unit  14 - 2  can be transmitted to the remote-operation centralized control apparatus  8  or not. The air-conditioning-apparatus storage unit  15  of the air-conditioning apparatus  1  stores the thermal-image transmission possibility/impossibility information transmitted from the remote control device  5 . The air-conditioning-apparatus indoor control unit  14  determines whether the thermal image can be transmitted or not based on the thermal-image transmission possibility/impossibility information stored in the air-conditioning-apparatus storage unit  15 . 
     When the thermal image can be transmitted in step S 800  (YES in S 800 ), the air-conditioning-apparatus indoor control unit  14  turns on the lamp in the display portion  4  of the air-conditioning apparatus  1 , which indicates that a thermal image is in a transmissible state ( 5801 ). Therefore, the user can understand that the thermal image is in a transmissible state. 
     In step  5800 , when the thermal image cannot be transmitted (NO in S 800 ), the lamp in the display portion  4 , which indicates that a thermal image is in a transmissible state, is turned off (S 802 ). 
     After the process of step S 801  or S 802 , the processing proceeds to the process of step S 1 . The processes of steps S 1  to  35  are the same as in Embodiment 1. After a thermal image is formed in step S 5 , the air-conditioning-apparatus indoor control unit  14  determines whether the thermal image can be transmitted (S 803 ). 
     As in step S 800 , in step S 803 , it is determined whether the thermal image can be transmitted or not, based on the thermal-image transmission possibility/impossibility information stored in the air-conditioning-apparatus storage unit  15 . 
     When the thermal-image transmission possibility/impossibility information is set to allow the thermal image to be transmitted (YES in S 803 ), the air-conditioning-apparatus indoor control unit  14  transmits the thermal image to the remote-operation centralized control apparatus  8  via the adaptor  3  (S 6 ). 
     By contrast, when the thermal-image transmission possibility/impossibility information is set not to allow the thermal image to be transmitted (NO in S 803 ), the air-conditioning-apparatus indoor control unit  14  does not transmit the thermal image to the remote-operation centralized control apparatus  8 , and the processing returns to the first step S 800  in order to acquire subsequent temperature information. 
     In Embodiment 4, whether the thermal image can be transmitted or not is set in the air-conditioning apparatus  1 , using the remote control device  5 . However, whether the thermal image can be transmitted or not may be set using the operation terminal  9 , and thermal-image transmission possibility/impossibility information may be transmitted to the air-conditioning apparatus  1  via the remote-operation centralized control apparatus  8 . 
     Therefore, in the air-conditioning-apparatus system according to Embodiment 4, the user can set whether the thermal image can be displayed or not, and grasp whether the thermal image is in a transmissible state or not, and can thus take into account the protection of privacy. 
     Embodiment 5 
     Regarding Embodiments 1 to 4, it is described above how acquired temperature information is displayed as a thermal image. Regarding an air-conditioning-apparatus system according to Embodiment 5, it will be described how an acquired thermal image is displayed on the operation terminal  9  in such a manner as to allow the user to more easily understand the thermal image. 
     A thermal image displays temperature information with color or color density. Therefore, when a temperature difference between an object and the surrounding of the object is small, it is difficult to recognize the object in the thermal image. The air-conditioning-apparatus system according to Embodiment 5 enables the user to accurately recognize the object even in the above case. 
       FIG. 14  is a flowchart indicating an operation of the operation terminal  9  of the air-conditioning-apparatus system according to Embodiment 5. Regarding Embodiment 5, components that are the same as those in Embodiment 1 will be denoted by the same reference signs, and their descriptions will thus be omitted. Embodiment 5 will be described by referring mainly to the differences between Embodiments 1 and 5. 
     When the operation to acquire a thermal image is performed, the operation terminal  9  acquires the thermal image stored in the remote operation storage unit  21  via the internet network  10  (S 100 ). In the case where a plurality of thermal images are stored in the remote operation storage unit  21 , the operation terminal  9  may also acquire a thermal image by selecting one of the plurality of thermal images stored in the remote operation storage unit  21 . 
     Next, a process of superimposing one of a visible image and the thermal image acquired in step  5100  on the other is performed (S 102 ). The visible image is, for example, a visible image of a room for which a thermal image stored in advance in the operation terminal  9  has been acquired, that is, the visible image is, for example, an image captured by a camera. It is not indispensable to store a visible image in advance before a thermal image is acquired. For example, a visible image may be captured by a camera after acquisition of a thermal image using an application that displays the thermal image on the operation terminal  9 . In a given image superimposition method, one of a thermal image and a visible image is superimposed as a transparent image on the other. One of the thermal image and another image other than the thermal image stored in the operation terminal  9  may be superimposed on the other. 
     Lastly, the images one of which is superimposed on the other in step  5103  are displayed (S 103 ).  FIG. 15  illustrates images displayed on the operation terminal  9  of the air-conditioning-apparatus system according to Embodiment 5. To be more specific, a thermal image is processed to obtain a transparent thermal image, and then superimposed on a visible image as illustrated in  FIG. 15 . Since the thermal image is combined with the visible image as illustrated in  FIG. 15 , the object can be more easily recognized, as compared with the case where only the thermal image is displayed as illustrated in  FIG. 11 . 
     Although a description concerning a way of acquiring a visible image is omitted in the flowchart, it is preferable that a thermal image be acquired at the time of acquiring a visible image. By describing a position where the operation terminal is provided, in the vicinity of the infrared sensor  2  of the air-conditioning apparatus  1  or by providing a structure that can fix the operation terminal, the angle of view for a thermal image that is acquired by the infrared sensor  2  can be easily made coincident with the angle of view for a visible image that is acquired by the operation terminal  9 . 
     In the air-conditioning-apparatus system according to Embodiment 5, it is possible to obtain an advantage in which since one of a visible image and a thermal image is superimposed on the other, it is possible to correctly recognize an object even from a thermal image that is displayed with a small temperature difference, in addition to obtaining the advantageous effects of the air-conditioning-apparatus system of Embodiment 1. 
     Embodiment 6 
     In Embodiments 1 to 5, a single thermal image is formed based on a combination of plurality of temperature information on respective locations, and is displayed on the operation terminal. In such a method, although a wide-angle thermal image can be displayed, but it takes a long time to form the image. 
     In an air-conditioning-apparatus system according to Embodiment 6, one of a thermal image acquired in a narrow range and a thermal image acquired in a wide range can be selected. To be more specific, in the air-conditioning-apparatus system according to Embodiment 6, it is possible to select one of thermal images that are acquired in the following manners: the infrared sensor  2  is fixed, and thus acquires a thermal image in a narrow range, and the thermal image to be displayed can be updated in a short time period; and the infrared sensor  2  is moved to acquire a thermal image in a wide range, and it takes a long time to acquire the thermal image. 
       FIG. 16  is a flowchart indicating an operation of the air-conditioning-apparatus system according to Embodiment 6. Regarding Embodiment 6, components that are the same as those in Embodiment 1 will be denoted by the same reference sings, and their descriptions will thus be omitted. Embodiment 6 will be described by referring mainly to the differences between Embodiments 1 and 6. 
     First, a thermal-image acquisition mode is determined. This acquisition mode indicates whether to form a thermal image of a fixed position in the room  7  or a thermal image of the entire room  7 . In order to set the thermal image acquisition mode, in a given method, the remote control device  5  is given in advance a function of setting the thermal image acquisition mode, and information on the setting is transmitted to the air-conditioning apparatus  1  and stored in in the air-conditioning-apparatus storage unit  15 ; and in another method, the thermal image acquisition mode is set with the operation terminal  9 , and information is transmitted to the air-conditioning apparatus  1  via the remote-operation centralized control apparatus  8  to set the thermal image acquisition mode. 
     Based on the acquisition mode the setting of which is stored in the air-conditioning-apparatus storage unit  15 , the air-conditioning-apparatus indoor control unit  14  determines whether to form a thermal image of a fixed position in the room  7  or a thermal image of the entire room  7  (S 900 ). 
     When formation of a thermal image of the entire room  7  is selected as the setting of the thermal image acquisition mode in step S 900  (NO in S 900 ), the air-conditioning-apparatus indoor control unit  14  carries out steps S 1  to S 6 , which are described regarding Embodiment 1. 
     When formation of a thermal image of the fixed position is selected as the setting of the thermal image acquisition mode in step  5900  (YES in S 900 ), the air-conditioning-apparatus indoor control unit  14  drives and moves the infrared sensor  2  to the fixed position, at which temperature information is to be acquired (S 901 ). 
       FIG. 17  is an explanatory view for light distribution, at the fixed position, by the infrared sensor  2  of the air-conditioning-apparatus system according to Embodiment 6.  FIG. 17  illustrates the case where temperature information is acquired, with the infrared sensor  2  fixed for a location where a sofa is provided. It should be noted that the user may operate the remote control device  5  or other terminals to adjust the light distribution range of the infrared sensor  2 . 
     Next, the air-conditioning-apparatus indoor control unit  14  acquires temperature information from the infrared sensor  2  (S 902 ). The air-conditioning-apparatus indoor control unit  14  stores the acquired temperature information in the air-conditioning-apparatus storage unit  15 . Then, the air-conditioning-apparatus indoor control unit  14  forms a thermal image based on the temperature information on the fixed position that is stored in the remote operation storage unit  21  (S 903 ). 
     Next, the air-conditioning-apparatus indoor control unit  14  transmits the thermal image formed in step S 903  to the remote-operation centralized control apparatus  8  via the internet network  10  (S 904 ). Thereafter, the acquisition of temperature by the infrared sensor  2  in step S 902 , the formation of a thermal image in step S 903 , and the transmission of the thermal image in step S 904  are repeatedly performed. 
     Therefore, in the air-conditioning-apparatus system according to Embodiment 6, it is possible to obtain an advantage in which the user can acquire an image of a narrow range that is to be updated in a short time period, in addition to the advantages obtained by the air-conditioning-apparatus system of Embodiment 1. 
     The above embodiments are described above by way of example, and the descriptions do not intend to limit the scope of the embodiments. The embodiments can be modified and provide various configurations, and various omissions, replacements, and changes may be made thereto without departing from the gist of the embodiments. The embodiments to which the omissions, replacements or changes are made and modifications of the embodiments are also covered in the scope and the gist of the embodiments. 
     REFERENCE SIGNS LIST 
       1 : air-conditioning apparatus,  2 : infrared sensor,  2 a: drive actuator,  3 : adaptor,  4 : display portion,  5 : remote control device,  6 : router,  7 : room,  8 : remote-operation centralized control apparatus,  9 : operation terminal,  10 : internet network,  11 : external network,  12 : controller,  13 : input unit,  14 : air-conditioning-apparatus indoor control unit,  14 - 1 : drive control unit,  14 - 2 : thermal image forming unit,  15 : air-conditioning-apparatus storage unit,  16 : output unit,  17 : remote information input/output unit,  19 : air-conditioning-apparatus remote information input/output unit,  20 : remote information control unit,  21 : remote operation storage unit,  22 : operation-terminal information input/output unit,  23 : controller,  24 : time determination unit,  25 : time determination unit,  26 : light distribution range