JP2018106872A - All-night light controller, all-night light control system and all-night light control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an all-night light controller, an all-night light control system, and an all-night light control method which are improved in terms of crime prevention and energy saving.SOLUTION: An all-night controller includes: a detection part which detects a passerby and a light source possessed by the passerby with an image sensor, an illumination sensor, a thermo sensor or the like; a communication part for transmitting the detection result; a receiving part for receiving the detection result; and a control part which determines the number of passerby and stepwise controls brightness of the all-night light based on the number of passerby.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a nightlight control device, a nightlight control system, and a nightlight control method.

  Conventionally, a technique for saving energy by controlling the brightness of a streetlight in accordance with the presence of a pedestrian or a vehicle has been proposed (for example, Patent Document 1).

  Specifically, when the sensor provided on the streetlight detects a pedestrian or vehicle, control is performed to turn on the streetlight, and when the sensor provided on the streetlight does not detect a pedestrian or vehicle, the streetlight is turned off or Dimming control is performed. Furthermore, when controlling two or more street lamps, the brightness of the two or more street lamps is controlled in accordance with the movement of a pedestrian or a vehicle.

JP 2014-225377 A

  In the above-described technology, the brightness of the streetlight is only controlled based on the presence or absence of a pedestrian or a vehicle, and whether or not the pedestrian is alone is not taken into consideration. There is room.

  Accordingly, the present invention has been made to solve the above-described problems, and an object thereof is to provide a nightlight control device, a nightlight control system, and a nightlight control method that are improved from the viewpoint of crime prevention.

  The nightlight control device according to the first feature is a brightness of the nightlight based on a passer-by and a receiver that receives a detection result of a light source possessed by the passer-by, a number of the passers-by, and a number of the light sources. And a control unit for controlling.

  The nightlight control system according to the second feature is a brightness of the nightlight based on a passer-by and a receiver that receives a detection result of a light source possessed by the passer-by, a number of the passers-by, and a number of the light sources. And a control unit for controlling.

  The nightlight control method according to the third feature controls the brightness of the nightlight based on the step A for detecting passersby and light sources possessed by the passers, and the number of passersby and the number of light sources. Step B.

  According to one aspect, it is possible to provide a nightlight control device, a nightlight control system, and a nightlight control method that are improved from the viewpoint of crime prevention.

FIG. 1 is a diagram illustrating a nightlight control system according to an embodiment. FIG. 2 is a diagram for explaining detection of a passerby according to the embodiment. FIG. 3 is a diagram for explaining detection of a light source according to the embodiment. FIG. 4 is a diagram illustrating the nightlight control device 200 according to the embodiment. FIG. 5 is a diagram illustrating the nightlight control method according to the embodiment. FIG. 6 is a diagram illustrating the nightlight control method according to the first modification. FIG. 7 is a diagram illustrating the nightlight control method according to the second modification.

  Embodiments will be described below with reference to the drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals.

  However, it should be noted that the drawings are schematic and ratios of dimensions may be different from actual ones. Therefore, specific dimensions and the like should be determined in consideration of the following description. Moreover, it is a matter of course that portions having different dimensional relationships or ratios are included between the drawings.

[Embodiment]
(Nightlight control system)
The nightlight control system according to the embodiment will be described below. As shown in FIG. 1, the nightlight control system includes a nightlight 100, a nightlight control device 200, and a network 300.

  The nightlight 100 includes a light source 110, a detection unit 120, and a control unit 130.

  The light source 110 is a light source that illuminates a road surface or the like. The light source 110 is, for example, an LED (Light Emitting Diode). However, the light source 110 is not limited to an LED, and may be a light source such as an incandescent lamp.

  The detection unit 120 detects a passerby and a light source that the passerby has. The detection unit 120 may include an image sensor that detects a passerby and an illuminance sensor that detects a light source of the passerby. However, the light source of the passerby may be detected by the image sensor. The detection unit 120 is not limited to an image sensor or an illuminance sensor, and may be a thermo sensor.

  As illustrated in FIG. 2, the detection unit 120 may detect a passerby or may detect a group composed of two or more passers. The detection unit 120 may detect that two or more passers-by are one group when two or more passers-by are close and the moving speeds of the two or more passers-by are the same. When the detection unit 120 is an image sensor, the detection unit 120 may detect whether or not two or more passersby are one group by image analysis. The passerby may be a pedestrian or a person who rides on a light vehicle such as a bicycle.

  As illustrated in FIG. 3, the detection unit 120 may detect a flashlight or a smartphone that a passer-by has as a light source, or may detect a light provided in a light vehicle as a light source.

  The control unit 130 controls the brightness of the light source 110. In the embodiment, the control unit 130 controls the brightness of the light source 110 according to the control message received from the nightlight control device 200. Here, the control unit 130 communicates with the nightlight control device 200 via the network 300. Communication may be performed wirelessly or may be performed by wire. The control unit 130 transmits the detection results (the number of passers and the number of light sources) of the detection unit 120 to the nightlight control device 200.

  In FIG. 1, as the nightlight 100, a nightlight 100A to a nightlight 100C are illustrated. Nightlight 100A to nightlight 100C have the same configuration.

  The nightlight control device 200 communicates with the nightlight 100 via the network 300. Specifically, the nightlight control device 200 receives the detection results (the number of passersby and the number of light sources) of the detection unit 120 from the nightlight 100, and the brightness of the nightlight 100 (that is, the light source 110) based on the detection results. And a control message indicating the determined brightness is transmitted to the nightlight 100.

  The network 300 is a network that connects the nightlight 100 and the nightlight controller 200. Network 300 is not particularly limited, but may be the Internet, a dedicated line, or a mobile communication network. The network 300 may be an infrastructure that provides an Internet of Things (IoT) service.

(Nightlight controller)
Below, the nightlight control apparatus 200 which concerns on embodiment is demonstrated. As shown in FIG. 4, the nightlight control device 200 includes a management DB 210, a communication unit 220, and a control unit 230.

  The management DB 210 is configured by an HDD (Hard Disk Drive), an SSD (Solid State Drive), or the like, and is a DB (Data Base) for managing the nightlight 100. The management DB 210 manages, for example, information that associates identification information for identifying the nightlight 100 with geographical location information where the nightlight 100 is installed.

  The communication unit 220 is configured by a communication module or the like, and communicates with the nightlight 100 via the network 300. The communication unit 220 receives the detection result (the number of passers and the number of light sources) from the nightlight 100 by the detection unit 120. The communication unit 220 transmits a control message indicating the brightness of the nightlight 100 (that is, the light source 110) to the nightlight 100.

  The control unit 230 includes a CPU and a memory, and controls the nightlight control device 200. For example, the control unit 230 determines the brightness of the nightlight 100 (that is, the light source 110) based on the detection result of the detection unit 120. In other words, the control unit 230 controls the brightness of the nightlight 100 based on the number of passersby and the number of light sources.

  Specifically, the control unit 230 may control the brightness of the nightlight 100 with the first brightness when the number of passersby is the same as the number of light sources (first brightness control). When the number of passersby is different from the number of light sources, the controller 230 may control the brightness of the nightlight 100 with a second brightness that is higher than the first brightness (second brightness control). In 1st brightness control, since all the passers-by have a light source, it is thought that the risk that a passer-by is involved in a trouble is small. Therefore, in the 1st brightness control, it is thought that it is easy to ensure safety in terms of crime prevention for passers-by. Therefore, energy saving can be achieved by controlling the nightlight 100 with the first brightness smaller than the second brightness. On the other hand, in 2nd brightness control, since all the passers-bys do not have a light source, it is thought that it is difficult to ensure the safety in terms of crime prevention of passers-by. Therefore, crime prevention is achieved by controlling the nightlight 100 with the second brightness larger than the first brightness.

  Here, the case where the number of passers-by is not the same as the number of light sources assumes a case where the number of light sources is smaller than the number of passers-by. Therefore, when one passerby has a plurality of light sources, it may be considered that the number of light sources is one.

  The control unit 230 may control the brightness of the nightlight 100 with the third brightness when the light source is not detected and the number of passersby is 1 (third brightness control). When the light source is not detected and the number of passersby is two or more, the control unit 230 may control the brightness of the nightlight 100 with the fourth brightness that is larger than the third brightness (fourth). Brightness control). In the third brightness control, even if the passer does not have a light source, there is no other passer-by, so it is considered that troubles caused by the other passer-by hardly occur. Therefore, energy saving can be achieved by controlling the nightlight 100 with the third brightness smaller than the fourth brightness. On the other hand, in the fourth brightness control, it is considered that it is difficult to ensure safety from the viewpoint of crime prevention of the passer-by because the passer does not have a light source but there are other passers-by. Therefore, crime prevention is achieved by controlling the nightlight 100 with the fourth brightness larger than the third brightness.

  If no passerby is detected, the controller 230 may control the brightness of the nightlight 100 with the minimum brightness (minimum brightness control). Basically, the minimum brightness is smaller than the brightness applied when a passerby is being detected. However, the minimum brightness may be the same level as the first brightness or the third brightness described above. In the minimum brightness control, since there is no passerby, it is considered that the risk of getting into trouble is small. Therefore, energy saving can be achieved by controlling the nightlight 100 with the minimum brightness.

  The control unit 230 may control the brightness of the nightlight 100 with the fifth brightness when the light source is not detected and the number of groups constituted by passers-by is 1. The control unit 230 may control the brightness of the nightlight 100 with the sixth brightness larger than the fifth brightness when the light source is not detected and the number of groups is two or more. The fifth brightness may be the same as the above-described third brightness, or may be smaller than the third brightness. The sixth brightness may be the same as the above-described fourth brightness, or may be smaller than the fourth brightness. The purpose of such control is the same as the third brightness control and the fourth brightness control described above. The reason why the 5th brightness may be smaller than the 3rd brightness and the reason why the 6th brightness may be smaller than the 4th brightness is that the passersby make up a group in the crime prevention of the passersby This is because it is easy to ensure safety.

(Nightlight control method)
Hereinafter, the nightlight control method according to the embodiment will be described.

  As shown in FIG. 5, in step S <b> 10, the nightlight control device 200 determines whether there is a passerby based on the detection result of the detection unit 210. If there is a passerby, the process of step S11 is performed, and if there is no passerby, the process of step S18 is performed.

  In step S <b> 11, the nightlight control device 200 determines whether there is a light source based on the detection result of the detection unit 210. When there is a light source, the process of step S12 is performed, and when there is no light source, the process of step S13 is performed.

  In step S12, the nightlight control device 200 determines whether or not the number of passersby is the same as the number of light sources based on the detection result of the detection unit 210. When the number of passers-by is the same as the number of light sources, the process of step S14 is performed, and when the number of passers-by is not the same as the number of light sources, the process of step S15 is performed.

  In step S <b> 13, the nightlight control device 200 determines whether or not the number of passersby is 1 based on the detection result of the detection unit 210. If the number of passers-by is 1, the process of step S16 is performed, and if the number of passers-by is not 1, the process of step S17 is performed.

  In step S <b> 14, the nightlight control device 200 controls the brightness of the nightlight 100 with the first brightness. In the embodiment, the nightlight control device 200 transmits a control message instructing the first brightness to the nightlight 100.

  In step S <b> 15, the nightlight control device 200 controls the brightness of the nightlight 100 with a second brightness that is greater than the first brightness. In the embodiment, the nightlight control device 200 transmits a control message instructing the second brightness to the nightlight 100.

  In step S16, the nightlight control device 200 controls the brightness of the nightlight 100 with the third brightness. In the embodiment, the nightlight control device 200 transmits a control message indicating the third brightness to the nightlight 100.

  In step S <b> 17, the nightlight control device 200 controls the brightness of the nightlight 100 with a fourth brightness that is greater than the third brightness. In the embodiment, the nightlight control device 200 transmits a control message instructing the fourth brightness to the nightlight 100.

  In step S18, the nightlight controller 200 controls the brightness of the nightlight 100 with the minimum brightness. In the embodiment, the nightlight control device 200 transmits a control message indicating the minimum brightness to the nightlight 100.

(Function and effect)
In the embodiment, the nightlight control device 200 controls the brightness of the nightlight 100 based on the number of passers-by and the number of light sources. According to such a configuration, it is possible to improve the brightness of the nightlight 100 from the viewpoint of crime prevention while achieving energy saving of the nightlight 100.

[Modification 1]
Hereinafter, Modification Example 1 of the embodiment will be described. In the following, differences from the embodiment will be mainly described.

  In the first modification, the nightlight control device 200 controls the brightness of the nightlight 100 according to the brightness around the nightlight 100. Specifically, the nightlight control device 200 controls the brightness of the nightlight 100 in the first control mode when the ambient brightness is larger than the threshold value. On the other hand, the nightlight control device 200 controls the brightness of the nightlight 100 in the second control mode when the ambient brightness is not greater than the threshold value.

  The details of the first control mode and the second control mode are the same as the flow shown in FIG. However, the brightness applied in the first control mode is smaller than the brightness applied in the second control mode. In other words, in the first control mode, the surrounding brightness is larger than the threshold value, so it is considered that it is easy to ensure safety in terms of crime prevention for passers-by. Therefore, priority is given to energy saving. On the other hand, in the second control mode, since the surrounding brightness is not larger than the threshold value, it is considered difficult to ensure safety from the viewpoint of crime prevention of passers-by. Therefore, crime prevention is given priority. However, the brightness applied in the minimum brightness control in the first control mode may be the same as the brightness applied in the minimum brightness control in the second control mode.

(Nightlight control method)
Hereinafter, the nightlight control method according to the first modification will be described.

  As shown in FIG. 6, in step S <b> 20, the nightlight control device 200 determines whether or not the brightness around the nightlight 100 is greater than the threshold based on the detection result of the detection unit 120. If the ambient brightness is greater than the threshold value, the process of step S21 is performed. If the ambient brightness is not greater than the threshold value, the process of step S22 is performed.

  In step S21, the nightlight controller 200 controls the brightness of the nightlight 100 in the first control mode. The details of the first control mode are the same as those of the float shown in FIG.

  In step S21, the nightlight control apparatus 200 controls the brightness of the nightlight 100 in the second control mode. The details of the second control mode are the same as those of the float shown in FIG.

  As described above, the brightness applied in the first control mode may be smaller than the brightness applied in the second control mode. However, the brightness applied in the minimum brightness control in the first control mode may be the same as the brightness applied in the minimum brightness control in the second control mode.

  In the first modification, the control mode applied according to the ambient brightness is two stages, but such a control mode may be three stages or more.

[Modification 2]
Hereinafter, a second modification of the embodiment will be described. In the following, differences from the embodiment will be mainly described.

  In the second modification, the nightlight control device 200 controls the color of the nightlight 100 according to the weather around the nightlight 100. Specifically, the nightlight control device 200 controls the color of the nightlight 100 to be white when the surrounding weather is not rain or fog. On the other hand, the nightlight control apparatus 200 controls the color of the nightlight 100 to yellow when the surrounding weather is rain or fog. Here, the brightness applied when the surrounding weather is rain may be smaller than the brightness applied when the surrounding weather is fog.

(Nightlight control method)
Hereinafter, the nightlight control method according to the second modification will be described.

  As shown in FIG. 7, in step S <b> 30, the nightlight control device 200 determines whether the weather around the nightlight 100 is rain or fog based on the detection result of the detection unit 120. When the surrounding weather is rain or fog, the process of step S31 is performed, and when the surrounding weather is not rain or fog, the process of step S34 is performed.

  In step S31, the nightlight control apparatus 200 determines whether the weather around the nightlight 100 is rain based on the detection result of the detection unit 120. When the surrounding weather is rain, the process of step S32 is performed, and when the surrounding weather is not rain, the process of step S33 is performed.

  In step S32, the nightlight control device 200 controls the color of the nightlight 100 to yellow (first color control). The brightness applied in the first color control may be smaller than the brightness applied in the second color control described later.

  In step S33, the nightlight control device 200 controls the color of the nightlight 100 to yellow (second color control). As described above, the brightness applied in the second color control may be larger than the brightness applied in the first color control.

  In step S34, the nightlight control device 200 controls the color of the nightlight 100 to white (third color control).

  Here, the details of the first color control, the second color control, and the third color control may be the same as the flow shown in FIG. 5 described above. However, in the first color control and the second color control, control based on the number of passers-by and the number of light sources may not be performed.

  In the second modification, the weather around the nightlight 100 is determined based on the detection result of the detection unit 120. However, the modified example 2 is not limited to this. The weather around the nightlight 100 may be determined based on weather information received from the weather server.

[Modification 3]
Hereinafter, Modification Example 3 of the embodiment will be described. In the following, differences from the embodiment will be mainly described.

  In the embodiment, the case where the detection units 120 are provided in all nightlights 100 is illustrated. On the other hand, in the third modification, a case where the nightlight 100 having the detection unit 120 (hereinafter referred to as the first nightlight) and the nightlight 100 not having the detection unit 120 (hereinafter referred to as the second nightlight) will be described.

  In the third modification, the nightlight control device 200 controls the brightness of the second nightlight provided around the first nightlight using the detection result of the first nightlight detector 120. Specifically, the nightlight control device 200 estimates the movement of the passerby (movement speed and movement direction) based on the detection result of the first nightlight detection unit 120, and changes to the second nightlight based on the estimated movement. Estimate the time that passers-by will reach. The nightlight control device 200 controls the brightness of the second nightlight using the detection result of the first nightlight detection unit 120 at the estimated time. The method for controlling the brightness of the second nightlight is the same as in the above-described embodiment.

  Here, the arrangement method of the second nightlight may be determined by the arrangement of the nightlight. When the nightlights are arranged in a straight line, one second nightlight may be arranged so as to be sandwiched between the pair of first nightlights. When nightlights are arranged on a curve, all nightlights may be the first nightlights.

[Modification 4]
Hereinafter, Modification Example 4 of the embodiment will be described. In the following, differences from the embodiment will be mainly described.

  In the fourth modification, the brightness control of the nightlight 100 (hereinafter, target nightlight 100) adjacent to the nightlight 100 (source nightlight 100) will be described.

  In the fourth modification, the nightlight control device 200 controls the brightness of the target nightlight 100 using the detection result of the detection unit 120 of the source nightlight 100. The nightlight control device 200 estimates the movement (movement speed and direction) of the passer-by based on the detection result of the detection unit 120 of the source nightlight 100. The nightlight control device 200 controls the brightness of the target nightlight 100 installed in the traveling direction of the passer before the passerby reaches the target nightlight 100 based on the movement (movement speed and movement direction) of the passerby. .

[Other Embodiments]
Although the present invention has been described with reference to the above-described embodiments, it should not be understood that the descriptions and drawings constituting a part of this disclosure limit the present invention. From this disclosure, various alternative embodiments, examples and operational techniques will be apparent to those skilled in the art.

  In the embodiment, the nightlight control device 200 connected to the nightlight 100 via the network 300 controls the brightness of the nightlight 100. However, the embodiment is not limited to this. Specifically, the nightlight control device 200 described above may be provided in each of the nightlights 100. In the modified example 3 described above, the nightlight control device 200 provided in the second nightlight may have a function of communicating with the nightlight control device 200 provided in the first nightlight.

  In the embodiment, the case where the nightlight 100 is a streetlight provided outdoors has been mainly described. However, the embodiment is not limited to this. The night light 100 may be provided indoors.

  In the embodiment, the nightlight 100 transmits the number of passersby and the number of light sources to the nightlight controller 200 as the detection result of the detection unit 120. However, the embodiment is not limited to this. The nightlight 100 may transmit an image or the like as a detection result of the detection unit 120 to the nightlight control device 200, and the nightlight control device 200 may specify the number of passersby and the number of light sources based on the image or the like.

  DESCRIPTION OF SYMBOLS 100 ... Nightlight, 110 ... Light source, 120 ... Detection part, 130 ... Control part, 200 ... Nightlight control apparatus, 210 ... Management DB, 220 ... Communication part, 230 ... Control part, 300 ... Network

Claims (11)

A receiver for receiving a detection result of a passerby and a light source of the passerby;
A nightlight control device comprising: a control unit that controls brightness of a nightlight based on the number of passersby and the number of light sources. The controller is
When the number of passersby is the same as the number of the light sources, the brightness of the nightlight is controlled by the first brightness,
2. The nightlight control device according to claim 1, wherein when the number of passersby is different from the number of the light sources, the nightlight control device controls the brightness of the nightlight with a second brightness larger than the first brightness. The controller is
When the light source is not detected and the number of passers-by is 1, the brightness of the nightlight is controlled by the third brightness,
3. The brightness of the nightlight is controlled by a fourth brightness greater than the third brightness when the light source is not detected and the number of passersby is two or more. The nightlight control device described in 1. The controller is
When the light source is not detected and the number of groups constituted by the passers is 1, the brightness of the nightlight is controlled by the fifth brightness,
The brightness of the nightlight is controlled by a sixth brightness larger than the fifth brightness when the light source is not detected and the number of the groups is two or more. The nightlight control device according to any one of the above.   The nightlight control device according to any one of claims 1 to 4, wherein the control unit controls the brightness of the nightlight according to the brightness around the nightlight.   The nightlight control device according to any one of claims 1 to 5, wherein the control unit controls a color of the nightlight according to a weather around the nightlight.   The nightlight control device according to any one of claims 1 to 6, wherein the detection unit includes an image sensor that detects the passerby and an illuminance sensor that detects the light source.   The nightlight according to any one of claims 1 to 7, wherein the control unit controls the two or more nightlights according to a movement of the passerby when two or more nightlights are provided as the nightlight. Control device.   The nightlight control apparatus according to claim 8, wherein the two or more nightlights include a first nightlight provided with the detection unit and a second nightlight provided with the detection unit. A receiver for receiving a detection result of a passerby and a light source of the passerby;
A nightlight control system comprising: a controller that controls the brightness of the nightlight based on the number of passersby and the number of light sources. Detecting a passer and a light source of the passer; and
A nightlight control method comprising: step B for controlling the brightness of a nightlight based on the number of passersby and the number of light sources.

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