JP4434059B2 - Lighting apparatus and recording device - Google Patents

Description

  The present invention relates to a lighting device including a monitoring unit that monitors an operation state, and a recording device that acquires and records a monitoring result from the monitoring unit from the lighting device.

  In general, when checking the operating status of lighting fixtures such as lighting columns installed outdoors (lighting on and off of the light source, normality and abnormality of the lighting circuit, etc.) Is walking around and checking individual lighting fixtures. When many illuminating lamps are arranged side by side like road lighting, they travel by patrol cars instead of walking. In these methods, since the patrol is performed at night, the labor cost is higher than in the case of patrol during the day. In addition, since the operating state is only confirmed by human eyes, it is difficult to accurately grasp the operating state of each lighting fixture, and the inspection efficiency is poor and oversight may occur. .

As a technology that makes it possible to acquire the operating state of the lighting fixture by daytime patrol instead of night patrol, the operating state when the light source is lit at night is recorded and recorded during the daytime patrol. It is considered to collect operating states (for example, see Patent Document 1). In the technique described in Patent Document 1, a transmitter capable of infrared communication is provided in a lighting fixture such as a lighting column, and when traveling on a patrol car, the operation state recorded in the lighting fixture is illuminated by infrared communication. Acquired non-contact from the equipment. Also known is a technique for acquiring an operation state recorded in a lighting fixture by communication using radio waves as a medium instead of infrared rays (see, for example, Patent Document 2).
JP-A-5-211096 JP 2002-324686 A

  As in Patent Document 1, since the directivity of infrared rays is strong in the technology using infrared communication, when there is an object that blocks infrared rays between the lighting fixtures, the operation state recorded in the lighting fixtures is acquired. I can't. For example, when a car is parked on a road between a lighting fixture and a patrol car as a patrol car, infrared communication cannot be used.

  On the other hand, if radio waves are used as in Patent Document 2, straight-line performance is weak compared to infrared rays, so it is considered that the problems caused by infrared communication are solved. However, radio waves have a relatively long reach, and the transmission direction is comparative. Therefore, there is a high possibility of interference with radio waves from other luminaires on the receiving side.

  The present invention has been made in view of the above-mentioned reasons, and the object thereof is that there is an obstacle such as an automobile between the apparatus and the device that collects the operation state from the lighting fixture by using a radio transmission path by radio waves. Accordingly, it is an object of the present invention to provide a lighting apparatus and a recording apparatus that can acquire an operating state even if it is used, and prevent radio wave interference from a plurality of lighting apparatuses.

The invention of claim 1 includes a monitoring unit that includes a light source, monitors an operation state, and stores a monitoring result, and is mounted on a moving body whose relative moving direction is known, and acquires a monitoring result from the monitoring unit. A lighting apparatus that forms an illumination system together with a recording device for recording, and forms a wireless transmission path by radio waves with the recording apparatus and can control directivity, and a wireless transmission path from the recording apparatus to the recording apparatus. A control device that is in a reception standby state until receiving a monitoring result acquisition request via, and in a transmission state in which the monitoring result is returned to the recording device via a wireless transmission path when the acquisition request is received, set the main lobe of the device antenna in the reception standby state in the direction in which the moving body is approaching, in the transmission state set in the direction to go away is mobile the main lobe of the device antenna, control Device, the transmission up to the limit of the number of iterations is repeated a plurality of times in a transmission state, a predetermined time after the transmission is characterized by prohibiting reception.

According to a second aspect of the present invention, there is provided a lighting system including a lighting device including a light source and a monitoring unit that monitors an operation state and stores a monitoring result, and a moving body whose relative moving direction with respect to the lighting device is known. Is a recording device that acquires and records the monitoring result from the monitoring unit from the lighting fixture, and forms a wireless transmission path by radio waves with the lighting fixture and can control the directivity, and a control unit for recording the recording unit receives the monitoring result through the wireless transmission channel and performs an acquisition request for the monitoring result through the wireless transmission channel, luminaire, a request for monitoring results in the reception standby state It will transmit state for transmitting repeatedly a plurality of times repeatedly up to the limit of the number of the receiving a subsequent predetermined time configured to prohibit the reception apparatus antenna is a reception standby state Akira when making an acquisition request for the monitoring result to the instrument to set the main lobe of the apparatus antenna in the direction of the front side in the traveling direction of the moving body, the main lobe of the apparatus antenna when receiving the monitoring results from the luminaire is transmitted state It is set in the direction on the rear side of the traveling direction of the moving body.

  According to the configuration of the first and second aspects of the invention, the monitoring result is stored in the lighting fixture and the monitoring result is stored, and the monitoring result stored when there is a request to obtain the monitoring result from the recording device is returned. The operating state of the lighting fixture can be easily acquired during the daytime when the light source is not turned on, and as a result, even if there are multiple lighting fixtures, the operating status can be collected efficiently and without oversight. There is an advantage. In addition, since a wireless transmission path using radio waves is used, even when an automobile is parked on the road between the luminaire and the recording device, communication between the luminaire and the recording device is possible. There is an advantage that the monitoring result of the operation state in the lighting apparatus can be acquired by the recording device.

According to the configuration of the first aspect of the invention, the directivity of the fixture antenna provided in the lighting fixture is controlled, and the main lobe of the fixture antenna is controlled to be in the direction in which the moving object approaches in the reception standby state. In the state, the main lobe of the fixture antenna is controlled to move away from the moving body, so that radio waves from unnecessary directions are not received at the time of reception and transmission at the lighting fixture, and interference can be prevented. There is an advantage. Moreover, since the control device repeats transmission a plurality of times up to the limit of the number of repetitions in the transmission state, and prohibits reception for a certain period of time thereafter, even if a plurality are arranged along the moving direction of the moving object, monitoring is performed. The result can be individually notified to the recording device.

According to the configuration of the second aspect of the present invention, the directivity of the apparatus antenna provided in the recording apparatus is controlled, and when the acquisition result of the monitoring result is requested, the main lobe of the apparatus antenna is set in the forward direction of the moving direction of the moving body. When the monitoring results are received, the main lobe of the device antenna is controlled to be in the rear side of the moving direction of the moving body, so at the time of transmission from the recording device to the lighting fixture and at the time of reception There is an advantage in that there is almost no transmission / reception with a non-purpose lighting apparatus and interference can be prevented. Moreover, since transmission from the lighting fixture is repeated a plurality of times up to the limit of the number of repetitions, and reception after that for a certain period of time is prohibited, a plurality of lighting fixtures are arranged along the moving direction of the moving body. Even in the case, the monitoring result from the lighting apparatus can be received individually.

  In the present embodiment, as shown in FIG. 2, using a recording device 2 (see FIG. 1) in which lighting columns 1 that are lighting fixtures are arranged along a road 3 and are mounted on an automobile 4 that is a moving body, The case where the monitoring result of the operation state of the illumination pillar 1 is acquired in a non-contact manner will be described. In the figure, the automobile 4 moves to the right (in the direction of arrow A).

  As shown to Fig.1 (a), the illumination pillar 1 is provided with the lighting device 12 which supplies the electric power which lights the light source 11 besides the light source 11 (it may not provide depending on the kind of light source 11). Since it is not necessary to turn on the light source 11 in the illumination column 1 when the ambient light amount is high, the lighting device 12 also incorporates an automatic flashing device that detects the ambient light amount and automatically turns on and off the light source 11. The illumination column 1 is also provided with a control device 10 including a monitoring unit 13 that monitors lighting and non-lighting of the light source 11 and normality and abnormality of the lighting device 12. In the monitoring unit 13, lighting and non-lighting of the light source 11 are determined by monitoring the lamp current, and whether the lighting device 12 is normal or abnormal is not only the lamp current but also the voltage (for example, input voltage) of each part of the lighting device 12. And output voltage). Regarding the lighting / non-lighting of the light source 11, a configuration may be adopted in which detection is performed using an optical sensor provided in the vicinity of the light source 11. The monitoring unit 13 stores the monitoring result. Note that the monitoring items in the monitoring unit 13 are not limited to lighting / non-lighting of the light source 11 and normal / abnormality of the lighting device 12, but can be appropriately provided as necessary. The lighting column 1 is powered by an AC power source AC such as a commercial power source.

  The luminaire 1 is provided with a communication unit 14 for forming a radio transmission path using radio waves with the recording device 2, and the communication unit 14 includes a luminaire antenna 16 that is a directional antenna, and a luminaire antenna. 16 is provided with a wireless device 15 for transmitting and receiving to and from the recording device 2. The wireless device 15 extracts received information from the radio wave received by the appliance antenna 16 and instructs the control device 10, and transmits the radio wave through the appliance antenna 16 in accordance with an instruction from the control device 10. Here, the control device 10 always waits for a monitoring result acquisition request from the recording device 2 through the wireless device 15. When the acquisition request is received, the stored monitoring result is returned to the recording device 2, and the monitoring result is displayed. A predetermined time after returning to the recording device 2 is set not to respond to an acquisition request from the recording device 2. In other words, the control device 10 performs control so as to prohibit reception for a certain period of time after sending the monitoring result.

  The appliance antenna 16 can switch at least the directivity in two directions, and the appliance antenna 16 used in this embodiment has a receiving radiator 15a and a transmitting radiator 15b as shown in FIG. And a Yagi antenna type configuration having a configuration in which the reflector 15c is shared by the receiver radiator 15a and the transmitter radiator 15b, and is reflected by the receiver radiator 15a and the transmitter radiator 15b. The vessel 15c is formed in a long size. Therefore, the reception device 15a is connected to the wireless device 15 at the time of reception, and the control device 10 is controlled to connect the transmission radiator 15b to the wireless device 15 at the time of transmission. The direction of the main lobe can be switched. Further, the main lobe direction can be switched with a simple configuration and simple control only by adding the reflector 15c to the receiving radiator 15a and the transmitting radiator 15b.

  In addition, it employs a configuration in which two directional antennas having different main lobe directions are used to select one to be used, or a single directional antenna capable of controlling the main lobe direction. A configuration may be adopted.

  On the other hand, as shown in FIG. 1B, the recording device 2 includes a recording unit 21 that acquires and records the monitoring result recorded in the monitoring unit 13 of the illumination column 1, and controls recording to the recording unit 21. The control unit 20 is provided. The control unit 20 instructs the transmission / reception unit 22 to make an acquisition request for the monitoring result at the lighting column 1 at a predetermined time interval. And the monitoring result is recorded in the recording unit 21. The transmission / reception unit 22 forms a radio transmission path using radio waves with the illumination column 1 through the antenna 23. In the present embodiment, the antenna 23 is assumed to be omnidirectional. When recording the monitoring result in the recording unit 21, it is necessary to associate each monitoring result with the lighting column 1. Therefore, in order to identify the lighting column 1, the wireless device 15 of each lighting column 1 is provided for each lighting column 1. An identification code is assigned. When there is a monitoring information acquisition request from the recording device 2 to the lighting column 1, the identification information is recorded in association with the monitoring information by transmitting the identification code from the lighting column 1 together with the monitoring information to the recording device 2. Part 21 can be recorded.

  The operation when the monitoring result monitored by the illumination column 1 is recorded by the recording device 2 in the illumination system including the illumination column 1 and the recording device 2 configured as described above will be described. As described above, the recording apparatus 2 is mounted on the automobile 4 (a traveling car) that is a moving body, and the illumination pillars 1 are arranged along the road 3. Therefore, when the vehicle 4 travels, the recording device 2 moves away after approaching each lighting column 1. That is, it can be said that the relative moving direction of the recording apparatus 2 with respect to the illumination column 1 is known. Therefore, as shown in FIG. 4, the appliance antenna 16 provided in the illumination column 1 sets the direction of the main lobe Lbr in the direction in which the automobile 4 approaches the illumination column 1 during reception standby for receiving a monitoring result acquisition request. When transmitting the monitoring result to the recording device 2, the main lobe Lbt is set in the direction in which the automobile 4 moves away from the illumination column 1 (the direction in which the automobile 4 moves is indicated by an arrow A).

  Thus, the recording device 2 repeatedly sends out a monitoring result acquisition request at a predetermined time interval, and when one of the lighting columns 1 receives the acquisition request, the lighting column 1 reads out and records the monitoring result from the monitoring unit 13. Return to device 2. That is, the illumination column 1 is always in a reception standby state, and in the reception standby state, the main lobe of the appliance antenna 16 is set in a direction in which the automobile 4 approaches the illumination column 1. Then, if there is a request to obtain a monitoring result from the recording apparatus 2 in the reception standby state, reception is prohibited for a certain period of time thereafter, and the main lobe of the appliance antenna 16 is set in a direction in which the automobile 4 moves away from the lighting column 1. The monitoring result is repeatedly sent in that direction several times. Therefore, the recording device 2 acquires the monitoring result of one lighting column 1 by the time it receives the monitoring result from the next lighting column 1 in the traveling direction, and the recording device 2 displays the monitoring result of the next lighting column 1. If transmission of the monitoring result of the previous illumination column 1 is terminated before acquisition, interference of the monitoring result can be prevented. To ensure this operation, the recording device 2 that has received the monitoring result from the illumination column 1 makes a reception confirmation response, and the illumination column 1 that has received the reception confirmation response stops operation for a certain period of time. Good.

  The time from receiving the monitoring result acquisition request to returning the monitoring result is based on the time from the reception area defined by the main lobe Lbr to the transmission area defined by the main lobe Lbt. Keep it short. In addition, since the automobile 4 may not have reached the transmission area at the time when the monitoring result is returned in response to the acquisition request, the monitoring result is transmitted until a response notifying that it has been received from the recording device 2 is obtained. Is preferably repeated several times. The limit of the number of repetitions is set appropriately. Further, as described above, the illumination column 1 invalidates the acquisition request from the recording apparatus 2 for a certain time after notifying the recording apparatus 2 of the monitoring result.

  As described above, the illumination column 1 is always in a reception standby state, and transmission is performed when a monitoring result acquisition request is made, so that the timing of reception standby and transmission in the illumination column 1 is different. Since it is controlled, the recording apparatus 2 does not need to control the transmission / reception timing. In other words, the recording apparatus 2 can employ a configuration in which a monitoring result acquisition request is made at a predetermined time interval and at the same time reception of the monitoring result from the lighting column 1 is awaited. The recording device 2 may adopt a configuration in which transmission and reception are alternately performed. If transmission and reception are performed simultaneously, two antennas are required. However, if transmission and reception are performed alternately, one antenna can be shared between transmission and reception.

  Compared with the case where the illuminating column 1 uses an omnidirectional device antenna 16 by the above-described operation, the monitoring result acquisition request from the recording device 2 can be received early from the direction in which the vehicle 4 approaches. In addition, the monitoring result can be notified only in a necessary direction according to the movement of the automobile 4.

  By the way, depending on the electric field strength, a plurality of illumination pillars 1 may receive the monitoring result acquisition request all at once. However, as described above, the notification of the monitoring result is sent in a direction in which the automobile 4 moves away from the illumination pillar 1. Even if the monitoring results are received, transmission of the monitoring results is repeated until the monitoring results are acquired by the recording means 2, so even if an acquisition request is received by a plurality of lighting columns 1, The monitoring result is notified individually to the recording apparatus 2. In short, the recording device 2 can receive the monitoring result of each lighting column 1 without interference. Here, since the identification code is set for the lighting column 1, the monitoring result of each lighting column 1 can be separated even if radio waves notifying the monitoring results of the plurality of lighting columns 1 are mixed. Under such conditions, it is necessary to perform processing for avoiding information collision, and processing for detecting a collision or shifting transmission timing when there is a collision is necessary. Moreover, when a collision occurs, a relatively long processing time is required to avoid the collision. On the other hand, in the present embodiment, the direction of the main lobe is changed between when the monitoring result acquisition request is received in the lighting column 1 and when the monitoring result is transmitted, so the possibility of interference is greatly increased. The collision avoidance process can be substantially eliminated.

(Embodiment 2)
In the first embodiment, the direction of the main lobe between transmission and reception is switched in the instrument antenna 16 provided on the illumination column 1, but in this embodiment, recording is performed instead of the instrument antenna 16 of the illumination column 1. A directional antenna is used as the device antenna 23 of the device 2, and the direction of the main lobe is different between transmission and reception. That is, an omnidirectional instrument antenna 16 in the illumination column 1 is used. In this case, as shown in FIG. 5, the main lobe Lct at the time of transmission is set on the front side (left front) with respect to the moving direction of the automobile 4 (the moving direction is indicated by arrow A), and the rear side (left The main lobe Lcr at the time of reception is set at the rear). With this operation, a monitoring result acquisition request can be made to the illumination column 1 located on the front side during transmission, and a monitoring result can be obtained from the illumination column 1 located on the rear side during reception. Other configurations and operations are the same as those of the first embodiment.

  In the present embodiment, since the lighting column 1 located on the front side has not yet transmitted the monitoring result, the monitoring result acquisition request can be received, and the plurality of lighting columns 1 may receive the monitoring result acquisition request. However, the lighting column 1 located on the rear side does not accept the acquisition request and does not return the monitoring result after transmitting the monitoring result. Therefore, in the recording device 2, the monitoring results from each lighting column 1 can be obtained separately and the monitoring results from the plurality of lighting columns 1 can be acquired without interference.

(Embodiment 3)
In the present embodiment, directional antennas are used for both the instrument antenna 16 of the illumination pole 1 and the device antenna 23 of the recording device 2. That is, as in the first embodiment, the appliance antenna 16 sets the main lobe Lbr in the direction in which the automobile 4 approaches when waiting for reception, and sets the main lobe Lbt in the direction in which the automobile 4 moves away during transmission. . On the other hand, as in the second embodiment, the device antenna 23 sets the main lobe Lct on the front side in the moving direction and receives the monitoring information from the lighting column 1 when transmitting the monitoring information acquisition request to the lighting column 1. When doing so, the main lobe Lcr is set on the rear side in the moving direction.

  According to the configuration of the present embodiment, the direction in which the recording device 2 transmits the acquisition request for the monitoring result and the direction in which the illumination column 1 receives the acquisition request overlap in a narrow range, and the monitoring result is returned from the illumination column 1. Since the direction and the direction in which the recording device 2 acquires the monitoring result overlap in a narrow range, the information of the other illumination columns 1 is not easily mixed during communication between the illumination column 1 and the recording device 2, and the first and second embodiments. The possibility of interference can be further reduced as compared with the case where the above configuration is used alone. Other configurations and operations are the same as those in the first and second embodiments.

1A is a block diagram illustrating an illumination column, and FIG. 2B is a block diagram illustrating a recording apparatus according to a first embodiment of the present invention. It is a schematic block diagram which shows the usage example in the same as the above. It is a structural example of the instrument antenna used for the same as the above, (a) is a schematic plan view, (b) is a schematic side view. It is operation | movement explanatory drawing of the instrument antenna used for the same as the above. It is operation | movement explanatory drawing of the apparatus antenna used for Embodiment 2 of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Illumination pillar 2 Recording apparatus 4 Car 10 Control apparatus 11 Light source 12 Lighting apparatus 13 Monitoring part 16 Instrument antenna 20 Control part 21 Recording part 23 Apparatus antenna

Claims (2)

A light source and a monitoring unit that monitors the operation state and stores the monitoring result, and is mounted on a moving body whose relative moving direction is known, and illuminates with a recording device that acquires and records the monitoring result in the monitoring unit A lighting fixture that constitutes a system, which forms a radio transmission path using radio waves with a recording device and can control directivity, and obtains monitoring results from the recording device via the wireless transmission path A control unit that is in a reception standby state until receiving a request, and in a transmission standby state that returns a monitoring result to a recording device via a wireless transmission path when an acquisition request is received. set main lobe in the direction in which the moving body is approaching, the transmission state is set in the direction going away is mobile main lobe of the instrument antenna, controller, transmits state Hey is repeated a plurality of times to transmit up to the limit of the number of iterations, the luminaire fixed time after transmission, characterized in that prohibiting reception. A lighting system is configured together with a lighting device including a light source and a monitoring unit that monitors an operation state and stores a monitoring result, and is mounted on a moving body whose relative moving direction with respect to the lighting device is known and monitored from the lighting device. A recording device that acquires and records the monitoring results by the unit, and forms a wireless transmission path by radio waves with a lighting fixture and can monitor the directivity of the apparatus via the wireless transmission path performs result acquisition request includes a control unit for recording the recording unit receives the monitoring results via a radio transmission path, luminaire, up to the limit of the number of iterations and receiving an acquisition request of the monitoring results in the reception standby state will transmit state for transmitting repeatedly a plurality of times, a subsequent predetermined time configured to prohibit the reception apparatus antenna, monitoring result to the luminaire is reception standby state When performing the acquisition request to set the main lobe of the apparatus antenna in the direction of the front side in the traveling direction of the moving body, when receiving the monitoring results from the luminaire is transmitted state in the traveling direction of the moving body main lobe of the apparatus antenna A recording apparatus, wherein the recording apparatus is set in a rearward direction.

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