Indoor positioning energy-saving lighting device and its navigation system

An indoor positioning energy-saving lighting device has a central processing module, a light source control module, a motion sensing module, a communication module, and an indoor positioning module. The light source control module, the motion sensing module, the communication module, and the indoor positioning module are electrically connected to the central processing module. The motion sensing module continuously sends out an identification code and a turn-on message. The motion sensing module senses a movement of an object or the communication module receives the light-on message, the light source control module controls the light source to illuminate, and the indoor positioning module is used to memorize the location information of other indoor positioning energy-saving lighting devices and position information of an external gyroscope received by the communication module.

BACKGROUND OF THE INVENTION

1. Field of the Invention

The present invention relates to an indoor lighting device, and more particularly to an indoor positioning energy-saving lighting device that can save energy and cooperate with a mobile device to perform navigation.

2. Description of Related Art

When a parking lot of an existing building or an open space in a room needs to be illuminated, usually multiple conventional lighting devices are installed in a ceiling of the room corresponding to the area to be illuminated, and the entire room is lit by the illumination area where the light from the multiple conventional lighting devices overlap.

Although the conventional lighting devices described above are capable of illuminating the space in a room piece by piece when multiple conventional lighting devices are provided, since all of the conventional lighting devices or the conventional lighting devices in the same area are turned on or off by a single switch, they are all lit at the same time. When lighting in only some locations, all of the conventional lighting devices will still be turned on. It is a pity that the waste of energy generated in this way is a problem.

Furthermore, when a user parks in a parking lot of a building, the parking position is usually memorized by the planned area in the space and the number marked on the floor so that when leaving the building, the position number can be used when parking. Memories are retrieved from the parking lot, but due to the fact that human memories are easily forgotten or memory errors occur, there is a problem that the user cannot find his own vehicle when he returns to the parking lot.

The indoor positioning energy-saving lighting device and its navigation system in accordance with the present invention mitigate or obviate the aforementioned problems.

SUMMARY OF THE INVENTION

The main objective of the present invention is to provide an indoor positioning energy-saving lighting device that can save energy and cooperate with a mobile device to perform navigation.

The indoor positioning energy-saving lighting device in accordance with the present invention has a central processing module, a light source control module, a motion sensing module, a communication module, and an indoor positioning module. The light source control module, the motion sensing module, the communication module, and the indoor positioning module are electrically connected to the central processing module. The motion sensing module continuously sends out an identification code and a turn-on message. The motion sensing module senses a movement of an object or the communication module receives the light-on message, the light source control module controls the light source to illuminate, and the indoor positioning module is used to memorize the location information of other indoor positioning energy-saving lighting devices and position information of an external gyroscope received by the communication module.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

In order to understand the technical features and effects of the present invention in detail, and in accordance with the contents of the specification, the preferred embodiments shown in the figures are further described in detail as follows.

With reference toFIG. 1, a preferred embodiment of an indoor positioning energy-saving lighting device A in accordance with the present invention has a central processing module10, a light source control module11, a motion sensing module12, a communication module13, an indoor positioning module14, and a space detecting module15. The light source control module11, the motion sensing module12, the communication module13, the indoor positioning module14, and the space detecting module15are electrically connected to the central processing module10.

The light source control module11is electrically connected to a light source111. The motion sensing module12can be selected from infrared, ultrasonic, radar, or visual recognition sensors that can detect the movement of a moving object or a heating object for sensing. Whether a human body, a vehicle, or the like passes around the motion sensing module12, the central processing module10causes the light source control module11to turn on the light source111and sends a light-on message to the communication module13. The signal intensity of the light-on message can be controlled by the communication module13, so as to control the reception range of the turn-on message. Furthermore, the communication module13continuously sends out an identification code (messages sent by the communication module13include the identification code) for allowing other devices such as a mobile device20or other devices to recognize the received message is sent out by which communication module13. The communication module13also receives signals of the orientation information of a gyroscope21of the mobile device20sent by the mobile device20.

The communication module13of other indoor positioning energy-saving lighting devices (within the valid acceptance range covered by the turn-on message) receive the turn-on message, and other light source control modules11of the indoor positioning energy-saving lighting devices control the light source111. The lighting is gradually enhanced (or the lighting may be turned on directly). When the other communication module13of the indoor positioning energy-saving lighting device A does not receive the turn-on message anymore, the light source control module11of the indoor positioning energy-saving lighting device A controls the light source111gradually. The method of reducing the brightness is activated, allowing the light source to turn off, and the above-mentioned control mode of transmitting the turn-on message to make the surrounding light source111shine achieves the effect of the setting partitioned lighting in the space.

The indoor positioning module14has a memory141. The memory141stores the position information of other lighting devices and the orientation information of the gyroscope21sent by the mobile device20around the communication module13. The following two navigation modes are performed:

First, the mobile device20moves sequentially through the lighting ranges of two or more light sources111of indoor positioning energy-saving lighting devices. When the mobile device20spans two different indoor positioning energy-saving lighting devices, the range of identification codes is transmitted, and therefore the identification codes of the mobile devices20are sequentially received. In the case of different identification codes, the relative positions of the two indoor positioning energy-saving lighting devices are judged from the azimuth information of the gyroscope21of the mobile device20, the relative positions of the respective pairs of the indoor positioning energy-saving lighting devices are combined to obtain position information and the mobile device20is ranked. The mobile device20moves from the first contacted indoor positioning energy-saving lighting device to the last contacted navigation path between the indoor positioning energy-saving lighting devices.

The above-mentioned first navigation mode, as shown inFIGS. 1 and 2, illustrates multiple of indoor positioning energy-saving lighting devices A of the present invention, and constitutes an indoor positioning energy-saving lighting device navigation system in an indoor space B. Further explanation of the system includes:

In an arrangement such as a matrix of spaces, multiple indoor-positioning energy-saving lighting devices A are disposed in an indoor space B of a parking lot, for example, and the lighting range of the multiple of indoor-positioned energy-saving lighting devices A covers the entire indoor space B. The identifiers of the multiple indoor-positioning energy-saving lighting devices A are numbered according to the matrix, and are sequentially set as P11, P12, P13. . . P54and so on. The range below each indoor-positioning energy-saving lighting device A is a parking space C, such as, in the preferred embodiment, six parking spaces C are provided below each indoor-positioning energy-saving lighting device A. The numbering mode of the foregoing identification codes is for ease of description in conjunction with the drawings. When a multiple of indoor-positioning energy-saving lighting devices A are initially installed in the indoor space B, the identification codes and relative positions of the energy-saving lighting devices A in each indoor location are not known.

A user or pedestrian driving the vehicle with the mobile device20enters the range of the indoor space B of the parking lot from the entrance and exit1. During the process, the gyroscope21of the mobile device20immediately detects the position information of the mobile device20at the time. In addition to the orientation information provided to the mobile device20, the mobile device20will also send orientation information to each indoor positioning energy-saving illumination device A that communicates with the mobile device20. As shown inFIG. 2, after the user carries the mobile device20to park in a parking space C with an identification code of P12, the user carries the mobile device20to exit and passes the identification codes P12, P11, P21, P31, P41, etc. in sequence. The lighting range of the light source111of the energy-saving lighting device A is located, and finally exits the indoor space B from the entrance and exit2.

When the mobile device20spans a range in which two indoor positioning energy-saving lighting devices A emit an identification code, for example, an indoor positioning energy-saving lighting device A that crosses the identification codes P12and P11, it sequentially receives the identification codes of P12and P11. From the azimuth information of the gyroscope21of the mobile device20, the relative positions of the two indoor positioning energy-saving lighting devices A of P12and P11are determined. When the user continues to pass through P11, P21, P31, and P41, the foregoing judging mode is repeated, and the relative positions of the paired indoor positioning energy-saving lighting devices A are combined to obtain an indoor position including P12, P11, P21, P31, and P41. The location information of the indoor positioning energy-saving lighting device A may be used by the user when the user enters the indoor space B again from the entrance and exit2to match the position information detected by the gyroscope21of the mobile device20. The mobile device20is navigated to the position of the indoor positioning energy-saving lighting device A of the P12, that is, the parking space C where the user's vehicle is located.

Second, a multiple of different indoor positioning modules14of the present invention transmit respective position information and orientation information of the gyroscope21of the mobile device20received by each communication module13. After the same or different mobile devices20are moved between all of the indoor positioning energy-saving lighting devices, the position information (and the indoor positioning energy-saving lighting devices distinguished by identifiers) covering all the indoor positioning energy-saving lighting devices is obtained, and the position information is stored in each indoor positioning module14. The location information is stored in the memory141of each indoor positioning module14or stored in the mobile device20. When the mobile device20approaches one of the indoor positioning energy-saving lighting devices and receives its identification code, the location information is used to indicate a plurality of locations of the present indoor positioning energy-saving lighting devices, and the mobile device20can be guided by the orientation information of the mobile device20of the mobile device20to a particular location.

The space detecting module15is a module for identifying whether a vehicle exists, and may be, for example, a visual recognition module for detecting the appearance of a vehicle, a radar for detecting the presence of a vehicle, or an ultrasonic module for detecting vehicle reflection. By means of the above method, it is determined whether there is an empty parking space within the range set below the space detecting module15, and if an empty parking space is detected, an empty parking space message with an identification code is sent out through the communication module13. The center processing module10selectively causes the light source control module11to drive the light source111or an additional warning light to flash, indicating that there is an empty parking space in the illumination range of the light source111or the range displayed by the warning light. The other communication module13of the present indoor positioning energy-saving lighting devices receives the empty parking space message and stores the empty parking space information in the memory141, and also forwards the empty parking space information with the identification code, and transmits the communication modes of the present indoor positioning energy-saving lighting devices. The group of communication modules13communicates empty parking spaces with each other so that each of the indoor positioning energy-saving lighting devices can indicate which of the indoor positioning energy-saving lighting devices has an empty parking space in the location information, when the mobile device20having the location information receives the empty parking space message. It can also indicate which of the location information in the location information has an empty parking space.

The above-mentioned second navigation mode, as shown inFIGS. 1 and 3, has multiple indoor positioning energy-saving lighting devices A of the present invention, and constitutes an indoor positioning energy-saving lighting device navigation system in an indoor space B. Further explanation of the system includes:

For example, a multiple of indoor positioning energy-saving lighting devices A are installed in an indoor space B of a parking lot, for example, in a matrix arrangement. The identification numbers of the multiple of indoor positioning energy-saving lighting devices A are numbered in accordance with the matrix, and are set in order P11, P12, P13. . . P54, and so on, the range below the indoor positioning energy-saving lighting device A is the parking space C. Before the system is used, the mobile device20is first used to move through all indoor positioning energy-saving lighting devices A to obtain position information covering all indoor positioning energy-saving lighting devices A, and this position information is stored in each indoor positioning energy-saving lighting device A. The location information is stored in the memory141of each indoor positioning energy-saving lighting device A, or is stored in the user's mobile device20, and the location information is uploaded to the communication module13or the mobile device20can be connected. The network cloud server obtains the location information (the mobile devices20entering the indoor space B can obtain the location information by communicating with any indoor positioning energy-saving lighting device A, or the mobile device20can pass through the network and obtain the location information that has been uploaded to the web cloud server).

The space detecting module15of each indoor positioning energy-saving lighting device A detects an empty parking space at the corresponding parking space C, and sends an empty parking space message to the communication module13, for example, indoor positioning of the P32. The position of the energy-saving lighting device A is empty, and the empty parking space message is transmitted between all indoor positioning energy-saving lighting devices A. By counting the number of empty parking spaces, the number of empty parking spaces included in the indoor space B can be displayed outside the parking lot. When the user of the driving vehicle carries the mobile device20and enters the range of the indoor space B of the parking lot from the entrance and exit3, the message of the number of empty parking spaces included in the indoor space B can be received and displayed on the mobile device20. Receiving the identification code of the indoor positioning energy-saving lighting device A adjacent to the number P52through the mobile device20, and obtaining the position of the mobile device20, the user and the vehicle in the location information, and setting the starting point, and then having the empty parking space of the indoor positioning energy-saving lighting device A as the end point, the orientation information of the gyroscope21is matched, the navigation path of the indoor positioning energy-saving lighting device A to the empty parking space is planned in the position information, and the mobile device20navigates to the empty parking space.

In the above preferred embodiment of the present invention, the communication module13may further utilize the gyroscope transmitted from the mobile device20in addition to receiving the signals of the orientation information of the gyroscope21sent by the mobile device20. The signal of the gyroscope21together with the signal of the electronic compass22of the mobile device20together improve the navigation accuracy of the present invention and change the two navigation modes of the present invention as follows:

When the first navigation mode described above is performed by the present indoor positioning energy-saving lighting device and navigation system, when the mobile device20transmits a range of identification codes across two different indoor positioning energy-saving lighting devices, and thus receives different identification codes in sequence, the21of the mobile device20determines the absolute position of the present indoor positioning energy-saving lighting device in accordance with the orientation information of the electronic compass22, and combines the absolute positions of the pair of the present indoor positioning energy-saving lighting devices to obtain position information and the first contact of the mobile device20. The navigation path between the indoor positioning energy-saving lighting devices moved to the last contact is provided.

When the second navigation mode described above is performed by using the present invention, a multiple of different indoor positioning modules14of the indoor positioning energy-saving lighting devices transmit respective position information and the gyroscope21of the mobile device20cooperates with the orientation information of the electronic compass22received by each communication module13, and when the same or different mobile device20moves between all the indoor positioning energy-saving lighting devices, the position information covering all the absolute positions of the present indoor positioning energy-saving lighting devices is obtained (and the identification code is used). The location information is stored in the memory141of each indoor positioning module14or stored in the mobile device20. When the mobile device20approaches one of the indoor positioning energy-saving lighting devices and receives its identification code, the location information is used to indicate a plurality of locations of the present indoor positioning energy-saving lighting device, and the mobile device20can be guided by the orientation information of the mobile device20to a particular location of the indoor positioning energy-saving lighting devices.