JP2022015871A - Detection device and display system - Google Patents

Abstract

To provide a detection device and a display system that can be applied to a wider variety of detection areas.SOLUTION: A detection device Sd that detects the presence/absence and movement direction of a detection target Ob that passes through a detection area Ar includes a first sensor 41 and a second sensor 42 each of which includes light emitting units 411 and 421 that emit light along the x direction and light receiving units 412 and 422 that receive light reflected by the detection target Ob, and a calculation unit 43 that processes output signals of the first sensor 41 and the second sensor 42, and the first sensor 41 and the second sensor 42 are arranged apart from each other in the y direction, and the calculation unit 43 detects the presence/absence and movement direction of the detection target Ob on the basis of a distance in the x direction to the detection target Ob detected by the first sensor 41 and the second sensor 42 and a time lag between the output signals of the first sensor 41 and the second sensor 42.SELECTED DRAWING: Figure 4

Description

The present invention relates to detection devices and display systems.

Various detection devices that use optical means to detect the presence or absence of a detection target have been proposed. Patent Document 1 discloses an example of a conventional detection device. The detection device disclosed in the same document includes a light emitting unit and a light receiving unit arranged so as to face each other with the detection region interposed therebetween. The light from the light emitting unit passes through the detection region and is received by the light receiving unit. If a human body or the like, which is an example of a detection target, is present in the detection region, the light from the light emitting unit is blocked, and this light is not received by the light receiving unit. In this way, the presence or absence of a detection target in the detection region can be determined by the presence or absence of light reception in the light receiving unit.

Japanese Unexamined Patent Publication No. 2008-47082

However, when the above detection device is used, it is necessary to arrange the light emitting unit and the light receiving unit on both sides of the detection region. For example, when detecting a person as a detection target at an entrance / exit of a building or a room, which is an example of a detection area, an upright panel having a light emitting part and an upright panel having a light receiving part are installed on both the left and right sides of the entrance / exit. Is forced. Depending on the location, shape and size of the detection area such as the entrance / exit, it may be difficult to properly arrange the light emitting unit and the light receiving unit.

The present invention has been conceived under the above circumstances, and an object of the present invention is to provide a detection device and a display system applicable to a wider variety of detection areas.

The detection device provided by the first aspect of the present invention is a detection device that detects the presence / absence of a detection target passing through the detection region and the moving direction, and is a light emitting unit that emits light along the first direction and the detection. The first sensor includes a first sensor and a second sensor, each of which has a light receiving unit for receiving light reflected by an object, and a calculation unit for processing the output signals of the first sensor and the second sensor. The second sensor is arranged apart from each other in the second direction perpendicular to the first direction, and the calculation unit reaches the detection target detected by the first sensor and the second sensor. It is characterized in that the presence / absence of the detection target and the moving direction are detected based on the distance in the first direction and the time lag between the output signals of the first sensor and the second sensor.

In a preferred embodiment of the present invention, the first sensor and the second sensor are separated by 15 cm or more in the second direction.

The display system provided by the second aspect of the present invention includes a plurality of detection devices, a control device, a display device, and the plurality of detection devices for detecting the presence / absence of a detection target and a moving direction passing through the detection area. A display system including a control device and a network connecting the display devices, wherein each of the plurality of detection devices is installed at a doorway of a specific space so as to detect a passerby of the doorway. The control device calculates the number of people staying in the specific space based on the information regarding the presence / absence of the passer and the passing direction of the passer, which are included in the detection signals of the plurality of detection devices, and responds to the number of people staying. The display device outputs the display data, and the display device is characterized in that the display data is displayed.

In a preferred embodiment of the invention, the network is constructed to control a plurality of lighting fixtures provided to illuminate the specific space, and the control device is based on the number of people staying. Control multiple luminaires.

According to the present invention, the detection device and the display system can be applied to a wider variety of detection areas.

Other features and advantages of the invention will be more apparent by the detailed description given below with reference to the accompanying drawings.

It is a system block diagram which shows the display system which concerns on 1st Embodiment of this invention. It is a schematic layout diagram which shows the display system which concerns on 1st Embodiment of this invention. It is a block diagram which shows the detection device of the display system which concerns on 1st Embodiment of this invention. It is a schematic plan view which shows the detection device of the display system which concerns on 1st Embodiment of this invention. It is a schematic plan view which shows the detection device of the display system which concerns on 1st Embodiment of this invention. It is a schematic plan view which shows the detection device of the display system which concerns on 1st Embodiment of this invention. It is a schematic side view which shows the detection device of the display system which concerns on 1st Embodiment of this invention. It is a graph which shows the detection example by the detection device of the display system which concerns on 1st Embodiment of this invention. It is a table which shows the detection example of the detection device of the display system which concerns on 1st Embodiment of this invention. It is a block diagram which shows the lighting equipment of the display system which concerns on 1st Embodiment of this invention. It is a block diagram which shows the control device of the display system which concerns on 1st Embodiment of this invention. It is a block diagram which shows the mobile terminal of the display system which concerns on 1st Embodiment of this invention. It is a block diagram which shows the display device of the display system which concerns on 1st Embodiment of this invention. It is a sequence diagram of the display system which concerns on 1st Embodiment of this invention. It is a calculation example based on the detection result of the display system which concerns on 1st Embodiment of this invention. It is a sequence diagram of the display system which concerns on 1st Embodiment of this invention. It is a system block diagram which shows the display system which concerns on 2nd Embodiment of this invention. It is a schematic layout diagram which shows the display system which concerns on 3rd Embodiment of this invention. It is a system block diagram which shows the display system which concerns on 4th Embodiment of this invention.

Hereinafter, preferred embodiments of the present invention will be specifically described with reference to the drawings.

Terms such as "first," "second," and "third" in the present disclosure are used merely as labels and are not intended to order those objects.

<First Embodiment>
1 to 13 show a display system according to the first embodiment of the present invention. The display system A1 of the present embodiment includes a plurality of lighting fixtures L, a detection device Sd, a control device Ct, a mobile terminal Md, and a display device Dp. In addition, unlike this embodiment, the configuration may not include the mobile terminal Md.

The display system according to the present invention is a system that detects a passerby at the entrance / exit of a specific space and displays related information, and the specific configuration thereof is not limited at all. As shown in FIG. 2, the display system A1 of the present embodiment will be described by taking as an example a case of detecting a passerby of a plurality of entrances and exits Et in a store as a specific space, for example. Specific spaces include indoor rooms and halls, various outdoor venues, parks, facilities, and the like.

FIG. 1 is a system configuration diagram showing a display system A1. FIG. 2 is a schematic layout diagram showing the display system A1. FIG. 3 is a block diagram showing the detection device Sd of the display system A1. FIG. 4 is a schematic plan view showing the detection device Sd of the display system A1. FIG. 5 is a schematic plan view showing the detection device Sd of the display system A1. FIG. 6 is a schematic plan view showing the detection device Sd of the display system A1. FIG. 7 is a schematic side view showing the detection device Sd of the display system A1. FIG. 8 is a graph showing an example of detection by the detection device Sd of the display system A1. FIG. 9 is a table showing a detection example of the detection device Sd of the display system A1. FIG. 10 is a block diagram showing a lighting fixture L of the display system A1. FIG. 11 is a block diagram showing the control device Ct of the display system A1. FIG. 12 is a block diagram showing a mobile terminal Md of the display system A1. FIG. 13 is a block diagram showing a display device Dp of the display system A1.

[Detection device Sd]
As shown in FIG. 4, the detection device Sd is a device that detects the presence / absence of a detection target Ob passing through the detection region Ar and the moving direction, and is the x direction corresponding to the first direction of the present invention with respect to the detection region Ar. It is located on one side of. The specific configuration of the detection area Ar and the detection target Ob is not limited at all. In the present embodiment, the detection area Ar is set in the entrance / exit Et, and a passerby of the entrance / exit Et is detected as a detection target Ob. As shown in FIGS. 3 and 4, the detection device Sd of the present embodiment includes a first sensor 41, a second sensor 42, a calculation unit 43, a wireless communication unit 44, and a power supply unit 45.

The first sensor 41 and the second sensor 42 are sensors that perform a function of detecting the distance to the detection target Ob by an optical method. The first sensor 41 and the second sensor 42 may have the same configuration or different configurations from each other. In the following description, a case where the first sensor 41 and the second sensor 42 have the same configuration will be described as an example.

The first sensor 41 has a light emitting unit 411 and a light receiving unit 412. The light emitting unit 411 emits light along the x direction in FIG. The light from the light emitting unit 411 is preferably light having high directivity in which the spreading angle is suppressed as much as possible along the x direction. An LED or a laser element is used for the light emitting unit 411. Further, a lens or the like for increasing the directivity of the light from these light emitting elements may be appropriately provided. The light receiving unit 412 outputs a light receiving signal by receiving the reflected light when the light emitted from the light emitting unit 411 is reflected by the detection target Ob. As the light receiving unit 412, various configurations that perform a photoelectric conversion function can be adopted, and examples thereof include a photodiode and a phototransistor.

LiDAR (Light Detection And Ranging) is adopted as the light emitting unit 411 and the light receiving unit 412 of the present embodiment. The light emitting unit 411 can irradiate the laser beam in a pulse shape, and emits a laser beam having a wavelength of 600 to 900 nm from a semiconductor whose main raw material is yttrium, for example. The light receiving unit 412 is composed of a photodiode using, for example, silicon and indium gallium arsenide. The oscillation frequency from the light emitting unit 411 is in the range of 20 to 100 Hz. According to such an oscillation frequency detection device Sd, it becomes easy to detect the approach angle of the detection target Ob.

The second sensor 42 has a light emitting unit 421 and a light receiving unit 422. The light emitting unit 421 and the light receiving unit 422 have the same configuration as the light emitting unit 411 and the light receiving unit 412 described above.

As shown in FIG. 4, each of the first sensor 41 and the second sensor 42 emits light along the x direction. The first sensor 41 and the second sensor 42 are arranged apart from each other in the y direction corresponding to the second direction of the present invention. The distance Dy between the first sensor 41 and the second sensor 42 in the y direction is preferably 15 cm or more, more preferably 20 cm or more. The distance Dy in FIG. 4 is defined as, for example, the distance between the optical axis of the light emitted from the light emitting unit 411 and the optical axis of the light emitted from the light emitting unit 421.

The calculation unit 43 processes the signals from the first sensor 41 and the second sensor 42. As shown in FIG. 3, the arithmetic unit 43 of the present embodiment includes a first microcomputer 431, a second microcomputer 432, and a main microcomputer 433. The first sensor 41 is connected to the first microcomputer 431 by, for example, a UART (Universal Asynchronous Receiver Transmitter), and the second sensor 42 is connected to the second microcomputer 432 by a UART. The first microcomputer 431 and the second microcomputer 432 are connected to the main microcomputer 433 by, for example, GPIO (General-purpose input / output).

In the state shown in FIG. 5, there is no passerby who is the detection target Ob in the detection area Ar set in the entrance / exit Et, and the first sensor 41 and the second sensor 42 are on the wall separated by a predetermined distance. Wl is detected. On the other hand, when a passerby passes through the detection area Ar, the first sensor 41 and the second sensor 42 detect the passerby as the detection target Ob.

The first microcomputer 431 determines whether or not the detection target Ob is a human body such as a passerby based on the signal from the first sensor 41. When a human body is detected, the first microcomputer 431 transmits a human detection signal to the main microcomputer 433. The second microcomputer 432 determines whether or not the detection target Ob is a human body such as a passerby based on the signal from the second sensor 42. When a human body is detected, the second microcomputer 432 transmits a human detection signal to the main microcomputer 433.

As shown in FIG. 7, when the detection device Sd is installed at the entrance / exit Et of the store, the height H from the floor Fl to the detection device Sd (up to the laser beam from the first sensor 41 and the second sensor 42). The height) is preferably 80 to 120 cm. Two detection devices Sd may be installed at different heights in one doorway Et, one for adults and the other for children. Further, when installing at the entrance / exit of a store using a cart or the like, the height H is set to 110 cm to 120 cm. Depending on the installation location, it is easily affected by external light, so it is possible to provide eaves or blinds on the first sensor 41 and the second sensor of the detection device Sd to prevent malfunction.

The main microcomputer 433 receives the human detection signals from the first microcomputer 431 and the second microcomputer 432 and determines the moving direction of the passerby in the y direction. For example, FIG. 8 shows a distance detection signal from the first sensor 41 and the second sensor 42 when a certain passerby is detected. The timing at which each distance detection signal is temporarily shortened is the timing at which the passerby is detected as the detection target Ob. Based on this detection, a human detection signal is transmitted from the first microcomputer 431 and the second microcomputer 432 to the main microcomputer 433. Each person detection signal includes the time when a person is detected as a time stamp. The main microcomputer 433 determines the moving direction of the passerby based on the fact that the first sensor 41 and the second sensor 42 detect the same passer as the detection target Ob and the time difference of the detection. In the illustrated example, the detection by the second sensor 42 is performed after the detection by the first sensor 41. Therefore, it is determined that the passerby has moved from the first sensor 41 side to the second sensor 42 side (from the upper side to the lower side in the figure) in the y direction. When the passerby passes in the opposite direction, the distance detection signals of the first sensor 41 and the second sensor 42 in FIG. 8 have the opposite relationship.

The main microcomputer 433 determines the moving direction of the passerby as the detection target Ob, and in the present embodiment, it corresponds to whether the passerby is a person entering or leaving a store in a specific space. Generate information on increasing or decreasing the number of people. Then, the main microcomputer 433 generates detection data including the device ID, the number of people increase / decrease information, the time stamp, and the like.

In FIG. 2, the detection devices Sd1 to Sd4, which are the plurality of detection devices Sd, are individually arranged at the plurality of entrances / exits Et1 to Et4. The detection device Sdn shown in FIG. 1 is a generalized representation of the detection devices Sd1 to Sd4.

The wireless communication unit 44 is for performing wireless communication with the corresponding lighting fixture L using the second protocol described later. In this embodiment, the detection device Sd has a unique device ID. Specific examples of the device ID are not limited, and for example, a MAC (Media Access Control) address is used. The device ID may be stored in the wireless communication unit 44, or may be stored in, for example, a memory (not shown) of the calculation unit 43.

The power supply unit 45 is for supplying electric power necessary for operation to the first sensor 41, the second sensor 42, the calculation unit 43, the wireless communication unit 44, and the like. The power supply unit 45 is, for example, a battery having a function as an AC / DC converter for converting commercial AC 100V or 200V power into DC power, a transformer function, or the like, or a rechargeable battery.

FIG. 9 shows the relationship between the distance Dy and the detection accuracy of the passerby. If the distance Dy is 20 cm or more, even if the distance setting between the detection device Sd and the passerby as the detection target Ob is changed, no erroneous determination occurs in the detection of the passerby, and the passersby are counted appropriately. Was done. On the other hand, when the distance Dy is 10 cm, if the distance setting with the passerby as the detection target Ob becomes far, an erroneous determination occurs in the detection of the passerby, and an error is recognized in the count of the passersby.

These errors are due to changes in the spot diameter of the laser beam from the light emitting units 411 and 421 according to the distance from the detection device Sd. In the case of the detection device Sd used in the present embodiment, the spot diameters are 6 cm, 12 cm, 18 cm, and 30 cm when the distance from the detection device Sd is 1 m, 2 m, 3 m, and 5 m. As the spot diameter increases, the area where the laser light interferes with each other increases, and when the distance between the first sensor 41 and the second sensor 42 is 10 cm, if the distance from the detection device Sd is 2 m or more, there is an error in the passer count. Is likely to occur. On the other hand, when the distance is 20 cm or more, the region where the laser beams interfere with each other is reduced, and the error is reduced.

[Lighting fixture L]
The plurality of lighting fixtures L are used for indoor lighting, for example, and are installed at various places such as a ceiling, a wall surface, and a floor surface. Further, the lighting fixture L may have a configuration used for outdoor lighting. The specific form of the luminaire L is not limited in any way, and various forms such as alternative lighting for straight tube fluorescent lamps, high ceiling lighting, ceiling lights, downlights, base lights, spotlights, and the like can be appropriately adopted. In the following description, the lighting fixture L will be described by taking as an example a configuration used for lighting an indoor store as a specific space. Further, when describing the general configuration of the lighting fixture L, it is referred to as a lighting fixture L, and when distinguishing a plurality of lighting fixtures L, a reference numeral such as a lighting fixture L1, ... a lighting fixture Ln, etc. may be appropriately used. .. The plurality of lighting fixtures L1 to Ln may have the same configuration, may have a part in common with each other, or may have different configurations from each other. In the following description, unless otherwise specified, a case where a plurality of lighting fixtures L1 to Ln have the same configuration will be described as an example.

FIG. 10 is a block diagram of the lighting fixture L. The lighting fixture L includes a light source unit 11, a control unit 12, a storage unit 13, a wireless communication module 14, and a power supply unit 15.

The light source unit 11 is a portion that performs a light emitting function in the lighting fixture L1. The specific configuration of the light source unit 11 is not limited in any way, and includes, for example, a substrate and a plurality of LEDs mounted in a row on the substrate. Further, the luminaire L1 appropriately has a transparent or translucent cover (not shown) that transmits light from the light source unit 11.

The control unit 12 is for controlling each unit of the luminaire L based on an instruction from the control device Ct or the like. The specific configuration of the control unit 12 is not particularly limited, and includes, for example, a CPU. The storage unit 13 is for storing information necessary for controlling the control unit 12, and includes, for example, a semiconductor memory. The storage unit 13 is not limited to the one built in the housing of the lighting fixture L (not shown), and may be detachably provided outside the housing of the lighting fixture L.

The wireless communication module 14 is for performing wireless communication with the control device Ct, a plurality of lighting fixtures L, and the detection device Sd, and is a module for transmitting and receiving wireless signals. The wireless communication module 14 is connected to the control unit 12 by, for example, UART (Universal Asynchronous Receiver Transmitter) communication, but is not limited thereto. The wireless communication module 14 has a first wireless communication unit 141 and a second wireless communication unit 142.

To exemplify the function of the wireless communication module 14, a signal from the control device Ct is received, and data (for example, a lighting control signal) included in the received signal is transmitted to the control unit 12. Further, an acknowledge signal indicating that the lighting control signal has been received is transmitted to the control device Ct. Further, a status information signal indicating the operating status of the lighting fixture L may be transmitted to the control device Ct.

In the present embodiment, the unique lighting fixture ID possessed by each of the plurality of lighting fixtures L is stored in the wireless communication module 14. The information format of the lamp ID is not particularly limited, and for example, a MAC (Media Access Control) address is used. The lamp ID may be stored in any of the first wireless communication unit 141 and the second wireless communication unit 142, or in a component of the wireless communication module 14 other than these, or is stored in, for example, the storage unit 13. You may be.

The first wireless communication unit 141 is for performing wireless communication using the first protocol with the control device Ct and other lighting equipment L. The communication frequency of wireless communication using the first protocol is not limited in any way, and examples thereof include a 920 MHz band, a 2.4 GHz band, and a 5 GHz band. Further, specific examples of the first protocol are not particularly limited, and examples thereof include Bluetooth (registered trademark) including BLE (Bluetooth Low Energy), Zigbee (registered trademark), Wi-Fi (registered trademark) and the like. In the present embodiment, a plurality of lighting fixtures L having a first wireless communication unit 141 and a control device Ct construct a communication network Cn1 which is a mesh network. Since the first protocol is used for transferring various data between a plurality of lighting fixtures L as described later, it is possible to construct a mesh network while ensuring the transfer speed and reliability required for the data transfer. The protocol is selected.

The second wireless communication unit 142 is for performing wireless communication using the detection device Sd and the second protocol. The communication frequency of wireless communication using the second protocol is not limited in any way, and examples thereof include a 920 MHz band, a 2.4 GHz band, and a 5 GHz band. Further, specific examples of the second protocol are not particularly limited, and examples thereof include Bluetooth (registered trademark) including BLE (Bluetooth Low Energy), Zigbee (registered trademark), Wi-Fi (registered trademark), and the like. In the illustrated example, the second wireless communication unit 142 is connected to the first wireless communication unit 141 by SPI (Serial Peripheral Interface) communication, but the present invention is not limited thereto. In the present embodiment, as shown in FIG. 1, the lighting fixture L having the second wireless communication unit 142 and the corresponding detection device Sd form a communication network Cn2. The second protocol is used for data transfer with the detection device Sd or the like, and for example, BLE, Wi-Fi or the like is selected.

It is preferable to select the first protocol and the second protocol having different communication frequencies so that the communication with each other does not interfere with each other. Further, it is preferable that the wireless communication by the first wireless communication unit 141 and the wireless communication by the second wireless communication unit 142 have different communication timings. As the wireless communication using the second protocol, for example, one having a shorter communication distance than the wireless communication using the first protocol may be selected.

When the wireless communication module 14 receives, for example, a request signal requesting data acquisition of the detection device Sd from the control device Ct by the first wireless communication unit 141, the wireless communication module 14 converts the request signal from the first protocol to the second protocol. A transfer signal is generated, and this transfer signal is transmitted from the control unit 12 to the detection device Sd. Further, when the second radio communication unit 142 receives the detection data transmitted from the detection device Sd, the transfer data is generated by converting the detection data into the first protocol and transmitted to the control device Ct. To give a specific example, the wireless communication module 14 detects from the protocol flag in the communication data that the detection data from the detection device Sd is communication using the second protocol. Next, a predetermined process is performed according to the procedure according to the second protocol, and reception is performed by the second wireless communication unit 142. Then, the detected data is converted into a communication data format using the first protocol to generate transfer data, which is transferred to the adjacent lighting fixture L on the communication network Cn1.

The power supply unit 15 is for supplying electric power necessary for operation to the light source unit 11, the control unit 12, the wireless communication module 14, and the like. The power supply unit 15 has, for example, a function as an AC / DC converter that converts commercial AC 100V or 200V power into DC power, a transformer function, and the like.

[Control device Ct]
The control device Ct controls the lighting of the plurality of lighting fixtures L1 to Ln, processes based on the detection data of the plurality of detection devices Sd, and gives a display command to the display device Dp. In the case of the present embodiment, the control device Ct may be installed in the same room (store) in which the plurality of lighting fixtures L1 to Ln and the plurality of detection devices Sd are installed, or in the same building. It may be installed in another room or on another floor, or it may be installed in another building. When the control device Ct and the plurality of lighting fixtures L1 to Ln are separated to some extent, the control device Ct and the plurality of lighting fixtures L1 to Ln use not only wireless communication but also wired communication and wireless communication to each other. It may be configured to communicate. The display system A1 may be provided with at least one control device Ct, and may be provided with a plurality of control devices Ct in other configurations. The control device Ct of the present embodiment can communicate with both the plurality of lighting fixtures L and the mobile terminal Md.

FIG. 11 is a block diagram of the control device Ct. In the present embodiment, the control device Ct includes a display unit 21, a control unit 22, a storage unit 23, a wireless communication unit 24, and a power supply unit 25.

The display unit 21 is not always necessary in the control of the display system A1 described later, but is used for initial setting, maintenance, and the like of the control device Ct. The display unit 21 is, for example, a liquid crystal display or the like, and may further have a touch panel function. Further, instead of the display unit 21 functioning as a touch panel, the control device Ct may separately include an operation device such as a keyboard or a mouse.

The control unit 22 is a main component that performs lighting control of a plurality of lighting fixtures L1 to Ln, processing based on detection data of a plurality of detection devices Sd, and a display command to the display device Dp, and is a main component of the control device Ct. It is for controlling each part. For example, the control unit 22 transmits a control signal to the wireless communication unit 24 so that the wireless communication unit 24 transmits the control signal to the target lighting fixture L based on the instruction signal received from the mobile terminal Md. The specific configuration of the control unit 22 is not particularly limited, and includes, for example, a CPU. The storage unit 23 is for storing information such as programs and setting conditions necessary for controlling the control unit 22, and includes, for example, a semiconductor memory or a hard disk drive.

The wireless communication unit 24 is for performing wireless communication with the first wireless communication unit 141 of the wireless communication modules 14 of the plurality of lighting fixtures L1 to Ln and the mobile terminal Md. The frequency band of the wireless communication unit 24 and the standard of the wireless communication to which it complies are wireless communication using the above-mentioned first protocol. The wireless communication unit 24 transmits, for example, a control signal from the control unit 22 to the plurality of lighting fixtures L1 to Ln. Further, a detection request signal may be transmitted to a plurality of detection devices Sd. Alternatively, the instruction signal by the user transmitted from the mobile terminal Md is received. The received instruction signal is transmitted to the control unit 22. The control device Ct may have a wired or wireless communication circuit connected to the Internet in addition to the wireless communication unit 24.

The power supply unit 25 is for supplying electric power necessary for operation to the display unit 21, the control unit 22, the wireless communication unit 24, and the like. The power supply unit 25 has, for example, a function as an AC / DC converter that converts commercial AC 100V or 200V power into DC power, a transformer function, and the like.

The control device Ct has the lamp IDs of the plurality of lighting fixtures L and the device IDs of the plurality of detection devices Sd, and these are stored in, for example, the storage unit 23. The lamp ID and device ID possessed by the control device Ct may be a MAC address as a lamp ID possessed by the lighting fixture L or a MAC address as a device ID possessed by the detection device Sd, and may be associated with these MAC addresses. It may be another lamp ID or device ID.

In the present embodiment, the control device Ct counts the number of people staying in the store as a specific space based on the detection data from the detection device Sd. Then, a command is transmitted to display the information corresponding to the number of people staying and the congestion status of the store based on the number of people staying on the display device Dp. Alternatively, a lighting control command for setting the plurality of lighting fixtures L into lighting states corresponding to the congestion situation of the store is transmitted.

A clock unit (not shown) may be separately arranged in the display system A1. This clock unit receives FM radio waves and transmits time information to the control device Ct via the communication network Cn1. This time information is added to the data transmitted from the control device Ct to each luminaire L and the detection device Sd. Each luminaire L and each detection device Sd counts each time based on the received clock information. As a result, the time of the equipment or device constituting the display system A1 can be adjusted more accurately.

[Mobile terminal Md]
The mobile terminal Md is a terminal operated by the user in the display system A1. The mobile terminal Md is not particularly limited as long as it has portability, information processing capability, etc. that can be operated by the user, and is, for example, a tablet, a smartphone, a notebook PC, or the like. When a plurality of lighting fixtures L constituting the display system A1 are installed in a wide area, the display system A1 may include a plurality of mobile terminals Md.

FIG. 12 is a block diagram of the mobile terminal Md. In the present embodiment, the mobile terminal Md includes a display unit 31, a control unit 32, a storage unit 33, a wireless communication unit 35, and a power supply unit 36.

The display unit 31 is for displaying information and images necessary for operating the mobile terminal Md and the like. The display unit 31 is, for example, a liquid crystal display or an organic EL display, and has a touch panel function in the present embodiment. Instead of the display unit 31 functioning as a touch panel, the mobile terminal Md may be separately provided with an operation device such as a keyboard or a mouse. Further, unlike the present embodiment, the mobile terminal Md having the display unit 31 may play a role as the display device in the present invention.

The control unit 32 is for controlling each unit of the mobile terminal Md. The specific configuration of the control unit 32 is not particularly limited, and includes, for example, a CPU. The storage unit 33 is for storing information such as programs and setting conditions necessary for controlling the control unit 32, and includes, for example, a semiconductor memory or a hard disk drive.

The wireless communication unit 35 transmits instruction signals such as lighting / extinguishing of the plurality of lighting fixtures L1 to Ln to the control device Ct, and receives status information signals of the plurality of lighting fixtures L1 to Ln from the control device Ct. do. Further, the wireless communication unit 35 receives a display request signal of display data based on the detection data of the detection device Sd from the control device Ct. The frequency band of the wireless communication unit 35 and the conforming wireless communication standard may be the same as or different from the above-mentioned first wireless communication unit 141 and wireless communication unit 24, and may be, for example, Wi-Fi (registered trademark). ) Is selected. The wireless communication unit 35 may be a wireless communication module built in a tablet or the like as a mobile terminal Md, or may be an external wireless communication module connected to a USB terminal or the like. In the present embodiment, the communication network Cn3 is constructed by the mobile terminal Md and the control device Ct. The communication network Cn3 may perform wireless communication using the same first protocol as the communication network Cn1.

The power supply unit 36 is for supplying electric power necessary for operation to the display unit 31, the control unit 32, the wireless communication unit 35, and the like. The power supply unit 36 is, for example, a rechargeable battery.

[Display device Dp]
The display device Dp displays information based on the detection data of the detection device Sd according to the display request signal from the control device Ct. In the present embodiment, the display device Dp displays information regarding the increase / decrease in the number of people in the store according to the display request signal from the control device Ct. The installation location of the display device Dp is not particularly limited, and in the example shown in FIG. 2, it is arranged in the vicinity of the entrance / exit Et1 on the outside of the store. Further, in the present embodiment, the case where the display device Dp is connected to the mobile terminal Md by a wired communication such as HDMI (registered trademark) will be described as an example, but the present invention is not limited thereto. The display device Dp may be connected to the mobile terminal Md by wireless communication, or may be connected to the control device Ct by wire communication, wireless communication, or the like without going through the mobile terminal Md.

As shown in FIG. 13, the display device Dp of the present embodiment has a display unit 51, a control unit 52, a communication unit 54, and a power supply unit 55.

The display unit 51 displays information based on the detection data of the detection device Sd according to the display request signal from the control device Ct in the control of the display system A1 described later, and in the present embodiment, the number of people in the store is increased or decreased. Display information about. The display unit 51 is composed of, for example, a liquid crystal display panel, an organic EL display panel, or the like.

The control unit 52 controls the display state of the display unit 51 based on the display request signal from the control device Ct transmitted via the mobile terminal Md. The control unit 52 is, for example, a driver I or the like.

The communication unit 54 is a portion for communicating with the mobile terminal Md and the control device Ct. In the present embodiment, the communication unit 54 is an interface unit for connecting to the mobile terminal Md by wired communication such as HDMI (registered trademark).

The power supply unit 55 is for supplying electric power necessary for operation to the display unit 51, the control unit 52, the communication unit 54, and the like. The power supply unit 25 has, for example, a function as an AC / DC converter that converts commercial AC 100V or 200V power into DC power, a transformer function, and the like. Alternatively, the power supply unit 55 is, for example, a rechargeable battery.

Next, an operation example of the display system A1 will be described below. 14 and 16 are sequence diagrams showing an operation example of the display system A1.

In step S1, the detection device Sdn (n = 1, 2, 3, 4 in the present embodiment) sets the passersby passing through the adjacent entrance / exit Etn (detection region Ar) to the first sensor 41 and the second sensor. Detection data Ddn detected by 42 and including a time stamp indicating the number increase / decrease information, the device ID, and the measured time information corresponding to the number of people entering and leaving the store in the specific space by the above-mentioned processing. create. Then, the detection data Ddn is converted into a second putrocol and transmitted to the lighting fixture Ln by the communication network Cn2. The detection data Ddn may be transmitted by the detection device Sdn each time a passerby as a detection target Ob is detected, or may be performed in response to a request signal from the control device Ct. Alternatively, the time information of each detection device Sd may be set by adjusting the time in the display system A1 using the FM radio wave described above, and the detection data Ddn may be transmitted at a predetermined time interval or the like.

In step S2, the luminaire Ln receives the detection data Ddn from the detection device Sdn. The luminaire Ln converts the detection data Ddn into the first protocol and generates the transfer data Dtn. Then, the transfer data Dtn is transferred to the adjacent lighting fixture L by the communication network Cn1.

In step S3, the luminaire L1 receives the transfer data Dtn transferred between the plurality of luminaires L in the communication network Cn1. The luminaire L1 transmits the transfer data Dtn to the control device Ct.

In step S4, the control device Ct that has received the transfer data Dtn acquires a time stamp indicating the number of people increase / decrease information, the device ID, and the measured time information included in the transfer data Dtn. For example, the table shown in FIG. 15 is stored in the storage unit 23 of the control device Ct. By the time stamp included in the transfer data Dtn, the number increase / decrease information which is the number of shopkeepers and shopkeepers at the entrances / exits Et1 to Et4 corresponding to the detection devices Sd1 to the detection devices Sd4 is input to the table. As a result, the increase / decrease number of people in the entire store (+7 people in the table) at a certain time (for example, 12:00) is calculated, and the number of people staying in the entire store at that time (47 people in the table) is grasped. By sequentially acquiring such information on the increase / decrease in the number of people, it is possible to grasp the number of people staying in the entire store from moment to moment. Then, the control device Ct generates display data based on the number of people staying in the store obtained in step S4, and transmits the display data to the display device Dp via the mobile terminal Md or directly.

In step S5, the display device Dp that has received the display data causes the display unit 51 to display the content based on the display data. Examples of the display content of the display unit 51 include the number of people staying in the entire store at that time, information on restrictions on entering the store based on the number of people staying in the entire store, and the like. For example, if the total number of people staying in the store is less than 50, the message "You can enter the store", and if the total number of people staying in the store is 50 or more and less than 75, "the store is crowded." , And a message saying "Please refrain from entering the store" when the total number of people staying in the store is 75 or more is set as appropriate. It is possible to know when to prevent crowding and close contact in the store, open windows depending on the degree of congestion, and prevent sealing in the store.

Further, the mobile terminal Md may also have a configuration that also serves as the display device of the present invention. That is, displaying the display content based on the display data transmitted from the control device Ct on the display unit 21 is an example corresponding to the display of the display device of the present invention. In the display system A1, the configuration such as display on the display device Dp only, display on the mobile terminal Md only, display on both the display device Dp and the mobile terminal Md, and the like can be appropriately selected.

Further, the display system A1 may perform the following processing in addition to the display processing in the display device Dp (mobile terminal Md). As shown in FIG. 16, in step S6, the control device Ct creates a color temperature command that specifies the color temperature of the emission color of each luminaire L according to the number of people staying in the entire store. Then, the color temperature command is converted into the first protocol and transmitted to a plurality of lighting fixtures L via the communication network Cn1. The color temperature is set, for example, when the total number of people staying in the store is less than 50, the color temperature corresponds to the appropriate number of people: 5000K (lunch white), and when the total number of people staying in the store is 50 or more and less than 75 people, it is crowded. Color temperature corresponding to the number of people in the store: 3500K (warm white), color temperature corresponding to the number of people who restrict entry when the total number of people staying in the store is 75 or more: 2700K (light bulb color) are set appropriately. .. The control device Ct may create a command for designating the brightness of the lighting fixture L or a command for changing the lighting state such as lighting, extinguishing, and blinking, instead of the command for specifying the color temperature.

In step S7, the luminaire L1 closest to the control device Ct receives the color temperature command via the communication network Cn1. In the lighting fixture L1, when the specified content of the color temperature command targets the lamp ID of the own fixture, the control unit 12 changes and controls the color temperature of the light source unit 11 to the designated color temperature. Further, the color temperature command is transferred to another luminaire L via the communication network Cn1.

In step S8, the lighting fixture Ln that has received the color temperature command transferred from the lighting fixture L1 via the communication network Cn1 has the color of the light source unit 11 when the own fixture is the target, similarly to the lighting fixture L1. Change and control the temperature. By the above processing, the emission color of the designated lighting fixture L among the plurality of lighting fixtures L is set to the designated color temperature.

Next, the operations of the detection device Sd and the display system A1 will be described.

According to the present embodiment, as shown in FIGS. 2 and 4, the detection device Sd is directed from one side in the x direction from the light emitting unit 411 of the first sensor 41 and the light emitting unit 421 of the second sensor 42 toward the detection region Ar. And emits light, and the light reflected by the detection target Ob is received by the light receiving unit 412 and the light receiving unit 422. Therefore, the detection device Sd can be arranged only on one side of the detection area Ar in the x direction, and it is not necessary to arrange the detection device Sd on both sides of the detection area Ar in the x direction. Therefore, it can be applied to a wider variety of detection areas Ar, and can be installed, for example, at the entrance / exit Et of various stores.

As shown in FIGS. 4 to 6, the distance Dy between the first sensor 41 and the second sensor 42 in the y direction is preferably 15 cm or more, more preferably 20 cm or more. As a result, as shown in FIG. 9, it is possible to suppress erroneous detection of a passerby while making the detection device Sd compact enough to be installed at the entrance / exit Et or the like.

According to the display system A1, the number of people staying in the specific space can be grasped more accurately, and the display contents according to the number of people staying can be displayed on the display device Dp in so-called real time. Therefore, by displaying the display device Dp, the number of people staying in the specific space can be notified more quickly and accurately. For example, when a store is adopted as a specific space, it is possible to inform people outside the store of the congestion status in the store more quickly and accurately.

Further, by performing steps S6 to S8 in FIG. 16, the light emitting state of a plurality of lighting fixtures L, which are store lighting, is controlled according to the number of people staying in the store as a specific space. As a result, for example, the color temperature of the lighting fixture L can be set according to the number of people staying in the entire store, and the congestion status in the store can be displayed more naturally to the customers and clerk in the store without visually recognizing the display device Dp. I can tell you.

FIG. 17 shows another embodiment of the present invention. In these figures, the same or similar elements as those in the above embodiment are designated by the same reference numerals as those in the above embodiment.

As a modification of the display system A1, depending on the size of the store, particularly the width of the doorway Et, two detection devices Sd may be arranged to face each other on both sides of one doorway Et in the x direction. When the detection device Sd is configured to use LiDAR, a passerby as a detection target Ob can be appropriately detected even when the entrance / exit Et as the detection region Ar is wider. When the two detection devices Sd are placed facing each other, the measurement distance of the two detection devices Sd is set to a distance clearly shorter than the length of the entrance / exit Et, or the oscillation frequencies of the measurement are set to different frequencies. You may do it.

<Second Embodiment>
FIG. 17 shows a display system according to a second embodiment of the present invention. The display system A2 of the present embodiment includes a plurality of lighting fixtures L1 to L9, detection devices Sd1 to Sd3, a control device Ct, a mobile terminal Md, and a display device Dp.

Each of the lighting fixtures L1, L2, and L3 of the present embodiment functions as a gate module. The gate module functions as a module forming a small network (cluster) together with a part of the lighting fixture L in the communication network Cn1 which is a mesh network. Wireless communication between the plurality of clusters is performed by the gate modules. The lighting fixtures L1, L2, and L3 that function as gate modules can be constructed, for example, by appropriately changing the setting program of the wireless communication module 14 of the lighting fixture L having the above-described configuration.

In the illustrated example, the cluster Cn11 is constructed by the lighting fixtures L1, L4, and L7 installed at positions close to each other. Further, the cluster Cn12 is constructed by the lighting fixtures L2, L5, and L8 installed at positions close to each other. Further, the cluster Cn13 is constructed by the lighting fixtures L3, L6, and L9 installed at positions close to each other.

For example, the control data from the control device Ct is transmitted from the control device Ct to the lighting fixtures L1, L2, and L3 in the communication network Cn1, respectively. The luminaire L1 transfers the received data to the luminaire L4 and the luminaire L7. Similarly, the luminaire L2 transfers the received data to the luminaire L5 and the luminaire L8, and the luminaire L3 transfers the received data to the luminaire L6 and the luminaire L9.

The luminaire L7 converts the received data into the method of the second protocol and transmits it to the detection device Sd1 via the communication network Cn2. Similarly, the luminaire L8 converts the received data into the second protocol method and transmits it to the detection device Sd2 via the communication network Cn2, and the luminaire L9 converts the received data into the second protocol method. Then, the data is transmitted to the detection device Sd3 via the communication network Cn2. Further, the luminaire L7 converts the detection data Dd1 from the detection device Sd1 into the method of the first protocol and transmits it to the cluster Cn11. The luminaire L8 converts the detection data Dd2 from the detection device Sd2 into the method of the first protocol and transmits it to the cluster Cn12. The luminaire L9 converts the detection data Dd1 from the detection device Sd3 into the method of the first protocol and transmits it to the cluster Cn13. The detection data Ddn transmitted to the clusters Cn11 to Cn13 is transferred in the clusters Cn11 to Cn13 and the communication network Cn1, and is received by the control device Ct.

The same effect as that of the above-described embodiment can be obtained by this embodiment as well. Further, by providing the lighting fixtures L1, L2, and L3 that function as gate modules, the clusters Cn11, Cn12, and Cn13 can be constructed, and the communication efficiency of the communication network Cn1 which is a mesh network can be further improved.

<Third Embodiment>
FIG. 18 shows a display system according to a third embodiment of the present invention. In the display system A3 of the present embodiment, the configurations of the plurality of detection devices Sd1 to Sd4 are different from those of the above-described embodiment. Each of the detection devices Sd1 to Sd4 of the present embodiment has a light emitting unit and a light receiving unit arranged to face each other with the entrance / exit Et1 to Et4 as the detection region Ar interposed therebetween.

Also in this embodiment, the display of the display device Dp has the effect of notifying the number of people staying in the specific space more quickly and accurately. Further, as understood from the present embodiment, the detection device Sd used in the display system of the present invention is not limited to the configuration arranged only on one side of the detection area Ar, and is arranged on both sides of the detection area Ar. May be configured. Further, the display system may include both of the detection devices Sd having different configurations.

<Fourth Embodiment>
FIG. 19 shows a display system according to a fourth embodiment of the present invention. The display system A6 of the present embodiment includes an external storage device Ed.

The external storage device Ed is installed outside the communication network Cn1, and is, for example, a server, a commercial cloud, or the like. For communication between the external storage device Ed and the control device Ct, for example, a commercial internet line, a dedicated line, or the like is used. The external storage device Ed is accessible to the external user Eu at any time in a place away from a specific space such as a store where a plurality of lighting fixtures L constituting the display system A4 and a plurality of detection devices Sd are installed. .. The control device Ct may store, for example, the collected measurement data in the external storage device Ed.

The external user Eu can use the information stored in the external storage device Ed as it is or by arbitrarily processing it. For example, the external user Eu may display these data on an electric bulletin board such as digital signage or a large screen (both are not shown). Alternatively, as shown in the figure, the display device Dp may be connected to the external storage device Ed, and information such as the number of people staying may be displayed on the display device Dp.

Also in this embodiment, the display of the display device Dp has the effect of notifying the number of people staying in the specific space more quickly and accurately. Further, as understood from the present embodiment, the display device Dp in the present invention is not limited to a configuration in which a signal is transmitted from the control device Ct via the wireless communication network, and is temporarily stored in the external storage device Ed. It may be configured to display the information.

The detection device and display system according to the present invention are not limited to the above-described embodiments. The specific configuration of each part of the detection device and the display system according to the present invention can be freely redesigned.

A1, A2: Display system 11: Light source unit 12: Control unit 13: Storage unit 14: Wireless communication module 15: Power supply unit 21: Display unit 22: Control unit 23: Storage unit 24: Wireless communication unit 25: Power supply unit 31: Display unit 32: Control unit 33: Storage unit 35: Wireless communication unit 36: Power supply unit 41: First sensor 42: Second sensor 43: Calculation unit 44: Wireless communication unit 45: Power supply unit 51: Display unit 52: Control unit 54: Communication unit 55: Power supply unit 141: First wireless communication unit 142: Second wireless communication unit 411: Light emitting unit 412: Light receiving unit 421: Light emitting unit 422: Light receiving unit 431: First microcomputer 432: Second microcomputer 433: Main microcomputer Ar: Detection area Cn1, Cn2, Cn3: Communication network Cn11, Cn12, Cn13: Cluster Ct: Control device Dd1, Dd2, Ddn: Detection data Dp: Display device Dtn: Transfer data Dy: Distance Ed: External storage device Et , Et1, Et2, Et3, Et4, Etn: Doorway Eu: External user Fl: Floor I: Driver L, L1, L2, L3, L4, L5, L6, L7, L8, L9, Ln: Lighting equipment Md: Portable Terminal Ob: Detection target S1, S2, S3, S4, S5, S6, S7, S8: Step Sd, Sd1, Sd2, Sd3, Sd4, Sdn: Detection device Wl: Wall

Claims (4)

A detection device that detects the presence / absence of a detection target passing through the detection area and the direction of movement.
A first sensor and a second sensor, each of which has a light emitting unit that emits light along the first direction and a light receiving unit that receives light reflected by the detection target.
A calculation unit that processes the output signals of the first sensor and the second sensor is provided.
The first sensor and the second sensor are arranged apart from each other in a second direction perpendicular to the first direction.
The calculation unit includes a distance in the first direction to the detection target detected by the first sensor and the second sensor, and a time lag between the output signals of the first sensor and the second sensor. A detection device, characterized in that the presence / absence of the detection target and the movement direction are detected based on the above. The detection device according to claim 1, wherein the first sensor and the second sensor are separated from each other by 15 cm or more in the second direction. Multiple detection devices that detect the presence or absence of a detection target and the direction of movement that pass through the detection area,
With the control device
Display device and
A display system including the plurality of detection devices, a network connecting the control device and the display device, and the like.
Each of the plurality of detection devices is installed at an entrance / exit of a specific space so as to detect a passerby of the entrance / exit.
The control device calculates the number of people staying in the specific space based on the information regarding the presence / absence of the passer and the passing direction of the passer, which are included in the detection signals of the plurality of detection devices, and responds to the number of people staying. Output the displayed data
The display device is a display system characterized by displaying the display data. The network is constructed to control a plurality of lighting fixtures provided to illuminate the specific space.
The display system according to claim 3, wherein the control device controls the plurality of lighting fixtures based on the number of people staying.

Images