JP2020107391A - Illumination system and control method - Google Patents

Abstract

To provide an illumination system capable of controlling the light emission state of an illumination device based on a radio wave propagation state in space.SOLUTION: An illumination system 100 includes a wireless tag 10 and an illumination device 20. The wireless tag 10 includes a first radio wave communication unit 11. The illumination device 20 includes a light source 24, a second radio wave communication unit 21 for communicating with the first radio wave communication unit 11, an acquisition unit 26 for acquiring a reception state, at one of the first radio wave communication unit 11 and the second radio wave communication unit 21, of a signal transmitted by the other, and a control unit 27 for controlling the light emission state of the light source 24 based on the acquired reception state.SELECTED DRAWING: Figure 2

Description

The present invention relates to a lighting system and a control method.

A lighting system is known in which a lighting device is controlled by wireless communication. As an example of such a lighting system, Patent Document 1 discloses a lighting fixture including a light source operable to emit a beam of light and a wireless module operable to emit a wireless beam including a wireless signal. There is disclosed a lighting system comprising:

Japanese Patent Publication No. 2017-528962

The present invention provides a lighting system capable of controlling the light emitting state of a lighting device based on the propagation state of radio waves in space, and a control method.

A lighting system according to an aspect of the present invention includes a wireless communication device and a lighting device, the wireless communication device includes a first radio wave communication unit, and the lighting device includes a light source and the first radio wave communication unit. A second radio wave communication unit for communicating with, an acquisition unit for acquiring a reception state of the signal transmitted by one of the first radio wave communication unit and the second radio wave communication unit in the other, and based on the acquired reception state And a control unit for controlling the light emitting state of the light source.

A control method according to one aspect of the present invention is a control method executed by a lighting system, wherein the lighting system includes a wireless communication device having a first radio wave communication unit, a light source, and the first radio wave communication unit. And a lighting device having a second radio wave communication unit that communicates, wherein the control method obtains and acquires a reception state of the signal transmitted by one of the first radio wave communication unit and the second radio wave communication unit in the other. The light emitting state of the light source is controlled based on the received state.

ADVANTAGE OF THE INVENTION According to this invention, the illumination system and control method which can control the light emission state of an illuminating device based on the propagation state of the electromagnetic wave in space are implement|achieved.

FIG. 1 is a diagram for explaining the outline of the illumination system according to the embodiment. FIG. 2 is a block diagram showing a functional configuration of the lighting system according to the embodiment. FIG. 3 is an external view of the wireless tag. FIG. 4 is a diagram illustrating an example of an irradiation range of light emitted from a light source included in the lighting device and a communicable range of the second radio wave communication unit included in the lighting device. FIG. 5 is a sequence diagram of a threshold setting method. FIG. 6 is a diagram showing an example of an image for notifying the installation position of the wireless tag. FIG. 7 is a flowchart of Operation Example 1 of the lighting system according to the embodiment. FIG. 8 is a diagram for explaining another usage of the lighting system according to the embodiment. FIG. 9 is a diagram for explaining an example in which the lighting system according to the embodiment is used as a product inventory management system. FIG. 10 is a diagram showing an outline of a product inventory management system using the lighting system according to the embodiment. FIG. 11 is a diagram showing an outline of a lighting system including a plurality of sets of wireless tags and lighting devices.

Hereinafter, embodiments will be specifically described with reference to the drawings. It should be noted that each of the embodiments described below shows a comprehensive or specific example. Numerical values, shapes, materials, constituent elements, arrangement positions and connection forms of constituent elements, steps, order of steps, and the like shown in the following embodiments are examples, and are not intended to limit the present invention. Further, among the constituent elements in the following embodiments, constituent elements not described in independent claims are described as arbitrary constituent elements.

It should be noted that each drawing is a schematic diagram and is not necessarily strictly illustrated. Further, in each drawing, the same reference numerals are given to substantially the same configurations, and overlapping description may be omitted or simplified.

(Embodiment)
[Constitution]
First, the configuration of the lighting system according to the embodiment will be described. FIG. 1 is a diagram for explaining the outline of the illumination system according to the embodiment.

As shown in FIG. 1, a lighting system 100 according to the embodiment includes a wireless tag 10 and a lighting device 20. The lighting system 100 can control the light emitting state of the lighting device 20 based on the change in the state of the radio wave between the wireless tag 10 and the lighting device 20. When the RFID tag 10 is attached to the product shelf 30 as shown in FIG. 1A, when a person 40 passes by in front of the product shelf 30 as shown in FIG. It becomes an obstacle and the propagation state of radio waves between the wireless tag 10 and the lighting device 20 changes. Such changes in the propagation state of radio waves (in other words, disturbance of radio waves) may be referred to as fading. The lighting system 100 can change the light emitting state of the lighting device 20 based on such fading. For example, if the light emitting state of the lighting device 20 changes when a person 40 passes by in front of the product shelf 30, an eye catching effect can be obtained.

Hereinafter, each component included in the lighting system 100 will be described in detail with reference to FIG. FIG. 2 is a block diagram showing a functional configuration of the lighting system 100. In addition, in FIG. 2, the portable terminal 50 is illustrated in addition to the illumination system 100.

[Wireless tag]
First, the configuration of the wireless tag 10 will be described. The wireless tag 10 is an example of a wireless communication device, and is a receiver that receives a signal transmitted from the lighting device 20. FIG. 3 is an external view of the wireless tag 10. As shown in FIG. 3, the wireless tag 10 has, for example, a card shape. The wireless tag 10 includes a first radio wave communication unit 11, a first signal processing unit 12, a first storage unit 13, and a housing body 15. The housing body 15 includes the first radio wave communication unit 11 and the first radio wave communication unit 11. The wireless tag 10 accommodating the signal processing unit 12 and the first storage unit 13 can be attached to various places. The wireless tag 10 may have any shape such as a sticker shape or a stick shape. The wireless tag 10 is, for example, an active type having an internal power source, but may be a passive type that operates by radio waves received from the lighting device 20.

The first radio communication unit 11 is a radio communication circuit for the radio tag 10 to perform radio communication with the lighting device 20. The frequency of radio waves in radio communication is, for example, 700 MHz or more and 2.4 GHz or less. The radio waves do not include visible light and infrared rays.

The first signal processing unit 12 measures the reception intensity (RSSI: Received Signal Strength Indication) of the signal received by the first radio wave communication unit 11 from the lighting device 20, and receives the reception intensity information indicating the measured reception intensity as the first radio wave. Signal processing for causing the communication unit 11 to transmit to the lighting device 20 is performed. The first signal processing unit 12 is realized by, for example, a microcomputer, but may be realized by a processor or a dedicated circuit. The first signal processing unit 12 has a measuring unit 14.

The measurement unit 14 measures the reception intensity of the signal received by the first radio wave communication unit 11 from the wireless tag 10. The measurement unit 14 may be realized as a device integrated with the first radio wave communication unit 11.

The first storage unit 13 is a storage device that stores a program or the like that the first signal processing unit 12 executes to perform the signal processing. The first storage unit 13 is realized by, for example, a semiconductor memory or the like.

Note that the wireless tag 10 may include a material such as a metamaterial, and may have a configuration in which characteristic deterioration when the wireless tag 10 is attached to a dielectric or the like is suppressed.

[Lighting device]
Next, the lighting device 20 will be described. The lighting device 20 illuminates the space in which the lighting device 20 is installed. Illumination device 20 is specifically a pendant light, but may be a ceiling light, a downlight, a spotlight, or the like, and the specific aspect of illumination device 20 is not particularly limited. The lighting device 20 includes a second radio wave communication unit 21, a second signal processing unit 22, a light emission control circuit 23, a light source 24, and a second storage unit 25.

The second radio wave communication unit 21 is a wireless communication circuit for the lighting device 20 to perform wireless communication with the wireless tag 10. The second radio wave communication unit 21 transmits a signal for measuring the reception intensity (hereinafter, also simply referred to as a measurement signal) under the control of the second signal processing unit 22, for example. The second radio wave communication unit 21 also receives the reception strength information from the wireless tag 10.

The second signal processing unit 22 performs signal processing regarding the lighting device 20. The second signal processing unit 22 is realized by, for example, a microcomputer, but may be realized by a processor or a dedicated circuit. The second signal processing unit 22 includes an acquisition unit 26 and a control unit 27.

The acquisition unit 26 acquires the reception intensity from the reception intensity information. The control unit 27 controls the light emitting state of the light source 24 based on the acquired reception intensity. The control of the light emission state is, for example, dimming control including turning on and off, but may be toning control when the light source 24 is compatible with toning. Further, the light emission control may be schedule control for controlling the light source 24 based on a schedule.

The light emission control circuit 23 supplies a voltage and a current to the light source 24 under the control of the control unit 27. The light emission control circuit 23 is specifically a dimming circuit such as a PWM (Pulse Width Modulation) control circuit.

The light source 24 is a white light source for illumination that emits light by the voltage and current supplied from the light emission control circuit 23. The light source 24 is specifically realized by a fluorescent tube, an LED, or the like. The light source 24 may be a semiconductor light emitting element such as a semiconductor laser, a solid state light emitting element such as an organic EL (Electro Luminescence) or an inorganic EL.

The second storage unit 25 is a storage device in which a control program executed by the control unit 27 and the like are stored. The second storage unit 25 is realized by, for example, a semiconductor memory or the like.

As shown in FIG. 4, the lighting device 20 has the communicable range 29 of the second radio wave communication unit 21 within the irradiation range 28 of the light emitted from the light source 24. FIG. 4 is a diagram showing an example of an irradiation range 28 of light emitted from the light source 24 and a communicable range 29 of the second radio wave communication unit 21. Therefore, the wireless tag 10 is installed, for example, within an irradiation range 28 of light emitted from the light source 24.

[Mobile device]
Next, the mobile terminal 50 will be described. The mobile terminal 50 is a mobile information terminal used for an initial setting operation (also called a pairing operation) for bringing the wireless tag 10 and the lighting device 20 into a mutually communicable state. In addition, as described below, the mobile terminal 50 is also used to set a threshold value. In addition, the mobile terminal 50 can be used as a remote controller of the lighting device 20 after the initial setting. The mobile terminal 50 is specifically, for example, a tablet terminal or a smartphone. The mobile terminal 50 includes an operation reception unit 51, an information processing unit 52, a third radio wave communication unit 53, a storage unit 54, and a display unit 55.

The operation receiving unit 51 receives an operation of the user of the lighting system 100 or an operator who performs an initial setting work. The operation reception unit 51 is realized by, for example, a touch panel, a hardware button, and the like.

The information processing unit 52 performs various types of information processing based on the operation accepted by the operation accepting unit 51. The information processing unit 52 is realized by, for example, a microcomputer, but may be realized by a processor.

The third radio wave communication unit 53 is a wireless communication circuit for the mobile terminal 50 to communicate with the lighting device 20.

The storage unit 54 is a storage device in which a control program executed by the information processing unit 52 and the like are stored. The storage unit 54 is realized by, for example, a semiconductor memory.

The display unit 55 displays an image under the control of the information processing unit 52. The display unit 55 is specifically a display including a liquid crystal panel or an organic EL panel as a display device.

[Threshold setting method]
In the lighting system 100, the control unit 27 of the lighting device 20 specifically controls the light emission state of the light source 24 by comparing the reception intensity acquired by the acquisition unit 26 with the threshold value. This threshold may be a predetermined value, or may be arbitrarily set by the user. The method of setting the threshold will be described below. FIG. 5 is a sequence diagram of a threshold setting method.

First, the user does not have an object to be detected between the wireless tag 10 and the lighting device 20 (that is, between the first radio wave communication unit 11 and the second radio wave communication unit 21) (for example, in FIG. 1). (A state like (a)) is created, and the first operation for instructing the measurement of the reception intensity in this state is performed. When the operation accepting unit 51 accepts the first operation (S11), the information processing unit 52 of the mobile terminal 50 causes the third radio wave communication unit 53 to transmit the first instruction signal to the lighting device 20 (S12).

When the second radio wave communication unit 21 receives the first instruction signal, the second signal processing unit 22 of the lighting device 20 outputs a signal for measuring the reception intensity (hereinafter, also simply referred to as a measurement signal). (2) It is transmitted to the radio wave communication unit 21 (S13). The measurement signal is continuously transmitted for a period longer than the predetermined period.

The measurement unit 14 of the wireless tag 10 measures the reception intensity of the measurement signal while the measurement signal is being received by the first radio wave communication unit 11 (S14). The 1st signal processing part 12 produces|generates the 1st receiving intensity information which shows the average value of the measured receiving intensity in the predetermined period, and makes the 1st radio wave communication part 11 transmit the produced|generated 1st receiving intensity information (S15). ..

The acquisition unit 26 of the lighting device 20 acquires the first reception intensity (specifically, the average value in the predetermined period) from the first reception intensity information received by the second radio wave communication unit 21 (S16), The two-signal processing unit 22 stores the acquired first reception intensity in the second storage unit 25 (S17).

Next, the user is in a state where an object to be detected exists between the wireless tag 10 and the lighting device 20 (that is, between the first radio wave communication unit 11 and the second radio wave communication unit 21) (for example, FIG. 1). (A state (b)) is created, and the second operation for instructing the measurement of the reception intensity in this state is performed. When the operation accepting unit 51 accepts the second operation (S18), the information processing unit 52 of the mobile terminal 50 causes the third radio wave communication unit 53 to transmit the second instruction signal to the lighting device 20 (S19).

When the second instruction signal is received by the second radio wave communication unit 21, the control unit 27 of the lighting device 20 causes the second radio wave communication unit 21 to transmit the measurement signal (S20). The measurement signal is continuously transmitted for a period longer than the predetermined period.

The measurement unit 14 of the wireless tag 10 measures the reception intensity of the measurement signal while the measurement signal is being received by the first radio wave communication unit 11 (S21). The first signal processing unit 12 generates second reception intensity information indicating an average value of the measured reception intensities in a predetermined period and transmits the generated second reception intensity information to the first radio wave communication unit 11 (S22). ..

The acquisition unit 26 of the lighting device 20 acquires the second reception intensity (specifically, the average value in a predetermined period) from the second reception intensity information received by the second radio wave communication unit 21 (S23), The signal processing unit 22 stores the acquired second reception intensity in the second storage unit 25 (S24).

Then, the control unit 27 determines the threshold value based on the first reception intensity and the second reception intensity stored in the second storage unit 25 (S25). For example, the control unit 27 determines the average value of the first reception intensity and the second reception intensity as the threshold value, but may determine the value smaller than the first reception intensity and larger than the second reception intensity as the threshold value. The determined threshold value is stored in the second storage unit 25.

As described above, the user can set the threshold value by operating the mobile terminal 50.

If there is an object between the wireless tag 10 and the lighting device 20, the reception intensity tends to decrease, and therefore the second reception intensity should be smaller than the first reception intensity. Nevertheless, if the second reception intensity and the first reception intensity do not change much, the installation position of the wireless tag 10 may not be appropriate.

Therefore, the control unit 27 has a difference between the acquired first reception state and the acquired second reception state smaller than a predetermined value (that is, there is not much difference between the second reception intensity and the first reception intensity). In this case, the second radio wave communication unit 21 is caused to transmit notification information for making a notification regarding the installation position of the wireless tag 10. When the notification information is received by the third radio wave communication unit 53, the information processing unit 52 of the mobile terminal 50 causes the display unit 55 to display an image for notifying the installation position of the wireless tag 10. FIG. 6 is a diagram showing an example of an image for notifying the installation position of the wireless tag 10.

If such an image is displayed, the user can review the installation position of the wireless tag 10. If the processing of steps S11 to S25 is performed again after the installation position of the wireless tag 10 is reviewed, an appropriate threshold value is set.

[Operation example]
Next, an operation example of the lighting system 100 will be described. FIG. 7 is a flowchart of an operation example of the lighting system 100.

First, the control unit 27 causes the light source 24 to emit light in the first light emission state via the light emission control circuit 23 (S31). The first light emission state is, for example, a normal light emission state, but may be a light extinction state. The first light emitting state is not particularly limited.

Next, the control unit 27 causes the second radio wave communication unit 21 to transmit the measurement signal to the wireless tag 10 (S32). The wireless tag 10 causes the measurement unit 14 to measure the reception intensity of the measurement signal received by the first radio wave communication unit 11, and transmits the reception intensity information indicating the measured reception intensity by the first radio wave communication unit 11.

The second radio wave communication unit 21 receives the reception intensity information (S33), and the acquisition unit 26 acquires the reception intensity from the reception intensity information received by the second radio wave communication unit 21 (S34).

The control unit 27 determines whether or not the reception intensity is less than the threshold value by comparing the acquired reception intensity with the threshold value stored in the second storage unit 25 (S35).

When the reception intensity is equal to or higher than the threshold value, it is considered that there is no object between the wireless tag 10 and the lighting device 20, and the state is close to the state of FIG. Therefore, when determining that the reception intensity is equal to or higher than the threshold value (No in S35), the control unit 27 transmits the measurement signal again while keeping the light source 24 emitting light in the first light emission state (S31).

On the other hand, when the reception intensity is less than the threshold value, there is an object between the wireless tag 10 and the lighting device 20, and it is considered that the object is close to the state of FIG. Therefore, when determining that the reception intensity is less than the threshold value (Yes in S35), the control unit 27 causes the light source 24 to emit light in the second light emission state different from the first light emission state via the light emission control circuit 23 (S36). That is, the light emitting state of the light source 24 is changed. The second light emitting state is, for example, a light emitting state in which at least one of brightness and color temperature is different from the first light emitting state. The second light emitting state may be different from the first light emitting state, and the specific state is not particularly limited.

As described above, the lighting system 100 can control the light emitting state of the light source 24 based on the propagation state of the radio wave between the wireless tag 10 and the lighting device 20. Specifically, the illumination system 100 can control the light emission state of the light source 24 based on the reception state of the measurement signal transmitted by the second radio wave communication unit 21 in the first radio wave communication unit 11.

[Modification 1]
In the above embodiment, the reception intensity was measured by the wireless tag 10. However, the reception intensity may be measured by the lighting device 20. In this case, the lighting device 20 transmits an instruction signal to the wireless tag 10, and the wireless tag 10 returns a measurement signal to the lighting device 20 in response to the instruction signal. The illumination device 20 includes a measurement unit that measures the reception intensity of the returned measurement signal.

With such a configuration, the configuration of the wireless tag 10 can be further simplified, and the wireless tag 10 can be easily downsized and thinned.

[Modification 2]
In the above embodiment, the absolute value of the reception strength is used for the determination, but the absolute value of the reception strength is an example of the reception state, and the reception state is not limited to the absolute value of the reception strength. For example, the fluctuation of the reception intensity may be used for the determination. According to the knowledge of the inventors, when an object is present between the wireless tag 10 and the lighting device 20, the fluctuation range of the reception intensity is large, and the object is present between the wireless tag 10 and the lighting device 20. If it does not exist, the fluctuation range of the reception intensity becomes small. Therefore, in this case, when the control unit 27 determines that the fluctuation range of the reception intensity is less than the threshold value, the control unit 27 maintains the first light emission state of the light source 24, and when it determines that the fluctuation range of the reception intensity is equal to or greater than the threshold value, 24 is changed from the first light emitting state to the second light emitting state.

Further, instead of the reception strength, a parameter indicating another reception state may be used for the determination. For example, the arrival time of the measurement signal may be used for the determination. If the measurement signal includes information indicating the transmission timing, the wireless tag 10 that has received the measurement signal can calculate the arrival time and can return the arrival time information indicating the arrival time to the lighting fixture. In this case, for example, when the control unit 27 determines that the arrival time is less than the threshold value, the control unit 27 maintains the first light emission state of the light source 24, and when it determines that the arrival time is equal to or more than the threshold value, it causes the light source 24 to be in the first light emission state. To the second light emission state.

[Modification 3]
In the above embodiment, the lighting system 100 was used for eye catching in a store, but the use of the lighting system 100 is not limited to such an aspect. FIG. 8 is a diagram for explaining another usage of the lighting system 100.

In FIG. 8, the lighting device 20 is mounted on the ceiling of the toilet. Here, if the wireless tag 10 is attached to the floor or wall of the private room of the toilet, the person 40 is located between the wireless tag 10 and the lighting device 20 when the person 40 is in the private room. Therefore, the lighting device 20 can change the light emitting state of the light source 24 according to the presence or absence of the person 40 in the private room. For example, the lighting device 20 can turn on the light source when the person 40 is in the private room, and can turn off the light source when the person 40 is not in the private room. That is, the lighting system 100 can use the propagation state of the radio wave between the wireless tag 10 and the lighting device 20 as a human sensor.

A conventional configuration is known in which the illumination device 20 is turned on and off using an infrared sensor. However, in such a configuration, if the movement of the person 40 in the private room is small, the person 40 will be in the private room. Nevertheless, the lighting device 20 may be turned off. In the lighting system 100, the lighting device 20 is prevented from being turned off when the movement of the person 40 is small.

[Modification 4]
Further, the illumination system 100 may be used in a system that uses the propagation state of radio waves between the wireless tag 10 and the illumination device 20 other than the control of the light source 24. FIG. 9 is a diagram for explaining an example in which the lighting system 100 is used as a product inventory management system.

In FIG. 9, the lighting system 100 is used for inventory management of the products 60. For example, if the wireless tag 10 is attached to the placing surface of the product shelf 30 in the store, when the product 60 is on the product shelf 30, the product 60 is located between the wireless tag 10 and the lighting device 20. Therefore, the illumination device 20 can determine the presence or absence of the product 60 based on the propagation state (that is, the reception state) of the radio wave between the wireless tag 10 and the illumination device 20.

Here, as shown in FIG. 10, if the information indicating the presence or absence of the product 60 is transmitted from the lighting device 20 to the server device 70, the server device 70 can manage the inventory of the product 60. FIG. 10 is a diagram showing an outline of an inventory management system for products 60 using the lighting system 100. The user can acquire the inventory information of the product 60 by accessing the server device 70 using an information terminal such as the mobile terminal 50, for example.

[Modification 5]
The lighting system 100 may include a plurality of sets of the wireless tag 10 and the lighting device 20. FIG. 11 is a diagram showing an outline of a lighting system including a plurality of sets of the wireless tag 10 and the lighting device 20.

In the lighting system 100a shown in FIG. 11, a plurality of lighting devices 20 can communicate with each other by a pairing operation performed through the mobile terminal 50. Then, one lighting device 20 can communicate with the server device 70. Such a lighting system 100a can transmit a detection log of the presence or absence of an object between the wireless tag 10 and the lighting device 20 to the server device 70 from each of the plurality of sets of the wireless tag 10 and the lighting device 20. The user can acquire the detection log information by accessing the server device 70 using an information terminal such as the mobile terminal 50.

[Modification 6]
In the above embodiment, the lighting system 100 may cooperate with an air conditioner or a speaker, and further control the air conditioner or the speaker based on the reception intensity.

[Effects, etc.]
As described above, the lighting system 100 includes the wireless tag 10 and the lighting device 20. The wireless tag 10 includes a first radio wave communication unit 11. The illumination device 20 receives the light source 24, the second radio wave communication unit 21 that communicates with the first radio wave communication unit 11, and the reception of the signal transmitted by one of the first radio wave communication unit 11 and the second radio wave communication unit 21. An acquisition unit 26 that acquires a state and a control unit 27 that controls the light emission state of the light source 24 based on the acquired reception state are provided. The wireless tag 10 is an example of a wireless communication device.

Such a lighting system 100 can control the light emitting state of the light source 24 based on the propagation state of radio waves between the wireless tag 10 and the lighting device 20.

Further, for example, the wireless tag 10 is installed within the irradiation range 28 of the light emitted from the light source 24.

Such an illumination system 100 can control the light emitting state of the light source 24 based on the propagation state of radio waves in the irradiation range 28 of the light emitted by the light source 24.

In addition, for example, the wireless tag 10 further includes a measuring unit 14 that measures the reception state of the signal transmitted by the second radio wave communication unit 21 in the first radio wave communication unit 11. The second radio wave communication unit 21 receives the reception state information indicating the measured reception state from the first radio wave communication unit 11. The acquisition unit 26 acquires the reception status from the received reception status information.

Such an illumination system 100 can control the light emitting state of the light source 24 based on the receiving state of the signal transmitted by the second radio wave communication unit 21 in the first radio wave communication unit 11.

Further, for example, the wireless tag 10 further includes a container 15 that houses the first radio wave communication unit 11 and the measurement unit 14.

Such a wireless tag 10 can integrally hold the first radio wave communication unit 11 and the measurement unit 14.

Further, for example, the control unit 27 controls the light emitting state of the light source 24 by comparing the acquired reception state with a threshold value. The acquisition unit 26 includes a first reception state in a state where there is no object between the first radio wave communication unit 11 and the second radio wave communication unit 21, and a state of the first radio wave communication unit 11 and the second radio wave communication unit 21. The second reception state in the state where an object exists between them is acquired. The control unit 27 determines the threshold value based on the acquired first reception state and second acquisition state.

Such an illumination system 100 can determine the threshold value based on the measured reception state.

Further, for example, the control unit 27 is a notification for notifying the installation position of the wireless tag 10 when the difference between the acquired first reception state and the acquired second reception state is smaller than a predetermined value. The information is transmitted to the second radio wave communication unit 21.

According to such a lighting system 100, the user can review the installation position of the wireless tag 10.

In addition, the control method executed by the lighting system 100 acquires a reception state of the signal transmitted by one of the first radio wave communication unit 11 and the second radio wave communication unit 21 on the other side, and based on the acquired reception state, The light emitting state of the light source 24 is controlled.

Such a control method can control the light emitting state of the light source 24 based on the propagation state of radio waves between the wireless tag 10 and the lighting device 20.

(Other embodiments)
Although the embodiments have been described above, the present invention is not limited to the above embodiments.

For example, the lighting system may include a mobile terminal, and part or all of the processing performed by the lighting device in the above embodiments may be performed by the mobile terminal. For example, the threshold value determination process may be performed by the mobile terminal.

Further, in the above-described embodiment, the lighting device includes, for example, a lighting fixture and a lamp (in other words, a light source for lighting) attached to the lighting fixture, but a specific aspect of the lighting device is not particularly limited. For example, the lighting device may be realized in the form of a lamp as described above.

Further, the communication method between the devices described in the above embodiments is an example. The communication method between the devices is not particularly limited. The wireless communication performed between the devices is, for example, a specific low power wireless communication, a wireless communication using a communication standard such as ZigBee (registered trademark), Bluetooth (registered trademark), or Wi-Fi (registered trademark).

Further, in the above-described embodiment, the processing executed by the specific processing unit may be executed by another processing unit. Further, the order of the plurality of processes may be changed, or the plurality of processes may be executed in parallel.

Further, in the above-described embodiment, each component may be realized by executing a software program suitable for each component. Each component may be realized by a program execution unit such as a CPU or a processor reading and executing a software program recorded in a recording medium such as a hard disk or a semiconductor memory.

Further, each component may be realized by hardware. For example, each component may be a circuit (or integrated circuit). These circuits may constitute one circuit as a whole or may be separate circuits. Further, each of these circuits may be a general-purpose circuit or a dedicated circuit.

Further, the general or specific aspects of the present invention may be realized by a recording medium such as a system, a device, a method, an integrated circuit, a computer program, or a computer-readable CD-ROM. Further, the system, the device, the method, the integrated circuit, the computer program, and the recording medium may be implemented in any combination. For example, the present invention may be realized as a device (a wireless tag or a lighting device) that constitutes a lighting system. Further, the present invention may be realized as a program for causing a computer to execute the control method of the above-described embodiment, or as a computer-readable non-transitory recording medium in which such a program is recorded. May be. Further, the present invention may be realized as a program for causing the mobile terminal to function as a user interface for setting the threshold value as described in the above embodiments, or such a program is recorded. It may be realized as a non-transitory computer-readable recording medium.

In addition, it is realized by making various modifications to those embodiments by those skilled in the art, or by arbitrarily combining the components and functions of the embodiments without departing from the spirit of the present invention. The present invention also includes the forms.

10 Wireless tag (wireless communication device)
11 First Radio Wave Communication Section 14 Measuring Section 15 Housing 20 Illuminator 21 Second Radio Wave Communication Section 24 Light Source 26 Acquisition Section 27 Control Section 28 Irradiation Range 40 People (Object)
60 products (objects)
70 server device 100, 100a lighting system

Claims (7)

A wireless communication device,
With a lighting device,
The wireless communication device includes a first radio wave communication unit,
The lighting device is
A light source,
A second radio communication unit that communicates with the first radio communication unit,
An acquisition unit that acquires a reception state in the other of the signals transmitted by one of the first radio communication unit and the second radio communication unit,
An illumination system, comprising: a control unit that controls a light emission state of the light source based on the acquired reception state. The illumination system according to claim 1, wherein the wireless communication device is installed within an irradiation range of light emitted from the light source. The wireless communication device further includes a measurement unit that measures the reception state of the signal transmitted by the second radio communication unit in the first radio communication unit,
The second radio communication unit receives reception state information indicating the measured reception state from the first radio communication unit,
The illumination system according to claim 1, wherein the acquisition unit acquires the reception state from the received reception state information. The illumination system according to claim 3, wherein the wireless communication device further includes a housing that houses the first radio wave communication unit and the measurement unit. The control unit controls the light emission state of the light source by comparing the acquired reception state with a threshold value,
The acquisition unit, the first reception state in the state where no object is present between the first radio communication unit and the second radio communication unit, and between the first radio communication unit and the second radio communication unit. Obtaining the second reception state in the state where the object is present,
The illumination system according to claim 1, wherein the control unit determines the threshold value based on the acquired first reception state and the acquired second reception state. The control unit, when the difference between the acquired first reception state and the acquired second reception state is smaller than a predetermined value, notification information for performing a notification regarding the installation position of the wireless communication device. The lighting system according to claim 5, wherein the lighting system is transmitted to the second radio wave communication unit. A control method performed by a lighting system, comprising:
The lighting system comprises:
A wireless communication device having a first radio wave communication unit;
A light source, and a lighting device having a second radio wave communication unit that communicates with the first radio wave communication unit,
The control method is
Acquiring the reception state in the other of the signals transmitted by one of the first radio communication unit and the second radio communication unit,
A control method for controlling a light emission state of the light source based on the acquired reception state.

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