JP2012004062A - Street light group system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To propose a street light group system in which a plurality of street lights are appropriately manageable.SOLUTION: In the street light group system 1 that has a plurality of street lights 2, a management device to control and/or monitor the street lights 2 and a wireless terminal device to enable the management device to be communicated with the outside are installed in the respective street lights 2, in which a data transfer function to relay mutual communication data between other wireless terminals is installed in the wireless terminal device. Moreover, the respective street lights 2 are arranged so that the wireless terminal device is installed within an interval in which direct communications with the wireless terminal devices of neighboring street lights 2 become possible, so that a wireless mesh network 4 can be formed by the wireless terminal devices of the respective street lights 2, and that a manager Z can communicate with the management device of an arbitrary street light 2 via the wireless mesh network 4.

Description

  The present invention relates to a street lamp group system including a plurality of street lamps.

  Patent Document 1 discloses a street light that can be controlled and inspected by a remote control device. Specifically, in such a street light, the administrator accesses the management device built in the street light via a remote control device, thereby switching the lighting state, setting the lighting time, the lighting time, the clock, etc. It can be performed. In addition, maintenance work such as a lamp lighting test and a storage battery charge amount check can also be performed.

JP 2010-102850 A

  However, since street lights are installed over a wide area at intervals on roads, parks, etc., in the configuration described in Patent Document 1, even if the remote control device is used, the administrator is close to the street light to be managed. You must go one by one and perform wireless communication. Although it has been proposed to increase the range of wireless communication by increasing the output of the remote control device, medium and long distance wireless communication is required to cover the entire range where the street lights to be managed are installed. Medium- and long-distance wireless communication is not realistic because it consumes a lot of power and may interfere with other radio communication equipment, and there are legal restrictions such as only qualified people allowed in some countries. .

  The present invention has been made in view of the present situation, and an object thereof is to provide a street light group system that can manage street lights more easily than in the past.

  The present invention is a street lamp group system including a plurality of street lamps, each street lamp controlling and / or monitoring the street lamp, and enabling the management apparatus to communicate with the outside wirelessly. A wireless terminal device, the wireless terminal device has a data transfer function for relaying communication data between other wireless terminal devices, and each street light is a wireless terminal device between neighboring street lights. A wireless mesh network is formed by the wireless terminal devices of each street light, which are installed at an interval that enables direct radio wave communication, and an administrator can communicate with any street light management device via the wireless mesh network. This is a street light group system that is configured as described above. Here, the street lamp according to the present invention is not limited to those installed outdoors such as roads and parks, but also includes those installed in arcades and underground shopping streets.

  In such a streetlight group system, the administrator can communicate with any streetlight management device via a wireless mesh network configured between the streetlights constituting the system. It is possible to control and check all the street lights in one place without going to the station.

  Further, in the wireless mesh network according to the present invention, the communication data is transmitted to every corner of the network by hopping the communication data at each wireless terminal device. Even if the street lamps are installed in a wide area, it is sufficient if at least direct radio wave communication is possible between neighboring street lamps. Since a general street lamp installation interval is sufficient for short-range wireless communication with low output to perform radio wave communication between neighboring street lamps, according to the present invention, the power consumption of the wireless terminal device Less, and interference with other radio communications and legal problems are solved.

  In addition, in the wireless mesh network according to the present invention, the network configuration can be dynamically changed. Therefore, even when a specified wireless communication path is blocked by a new building, by selecting a bypass path, The function can be maintained. In addition, it can flexibly respond to changes in the configuration such as new installation, relocation, and partial removal of street lights.

  Further, in the present invention, a router for connecting the wireless mesh network and the wide area network is provided, so that an administrator can communicate with an arbitrary street light management device via the wide area network and the wireless mesh network. It is proposed to configure. Here, the “wide area network” is not limited to a closed network such as a WAN, but includes an open network such as the Internet. In such a configuration, the manager can grasp and control the state of each street light of the street light group system from a remote place. Note that such a router does not need to be installed independently of the street light, and may be incorporated in any street light constituting the system.

  Further, in the present invention, comprising a portable terminal comprising a wireless terminal device constituting the wireless mesh network, a control device for managing street lights, and an operation device operated by an administrator, It is proposed that the portable operation terminal is configured so that an administrator can communicate with an arbitrary street light management device via the wireless mesh network. In such a configuration, the street light of the system can be managed in one place using the portable operation terminal as long as it is within the communication area of the wireless mesh network without going through the wide area network.

  The present invention also includes a wireless terminal device constituting the wireless mesh network, a control device for managing the street light, and an operation device operated by an administrator, and includes at least one street light. A fixed terminal device installed at a position where it can directly communicate with the wireless terminal device, and by operating the fixed operation terminal, an administrator can communicate with any street light management device via the wireless mesh network. It is proposed to configure as follows. In such a configuration, the street lamp of the system can be managed in one place by using the fixed operation terminal. Such a fixed operation terminal does not need to be installed separately from the street light, and can be used as any street light.

  As described above, in the street light group system of the present invention, since the administrator can manage all the street lights constituting the street light group system in one place, for the control and inspection of such street lights, This saves you the trouble of walking around each street light. In addition, since short-distance wireless communication is sufficient for wireless communication between street lamps, power consumption of the wireless terminal device is small, and problems such as interference with other types of wireless communication and legal restrictions are less likely to occur.

  Even if a new building is built after a streetlight is installed and part of the communication path is interrupted, a new streetlight is added to the system, or an existing streetlight is removed By reconfiguring the communication path of the mesh network, the system functions can be reliably maintained, and excellent flexibility and durability are exhibited.

It is the schematic which shows the structure of the street lamp group system 1 of an Example. It is a front view of the street light 2 which comprises the street light group system 1. FIG. It is a block diagram which shows the control circuit of the street light 2. FIG. It is the schematic which shows the structure of the street lamp group system 1a of a modification. It is the schematic which shows the structure of the street lamp group system 1b of a modification.

  Embodiments of the present invention are described according to the following examples.

  FIG. 1 is a schematic diagram of a street lamp group system 1 of the present embodiment. The streetlight group system 1 includes a plurality of streetlights 2 installed in a distributed manner on a road or a park, and a router 3 connected to the Internet X (wide area network).

  As shown in FIG. 2, the street light 2 is formed by suspending a lamp 11 incorporating an LED lamp 15 on a frame 10 erected on the ground. The street light 2 is of an independent power source type that operates without external power supply. A solar cell panel 12 is disposed at the upper end portion of the frame 10 and a cylindrical housing portion corresponding to the base portion of the frame 10. 13 includes a storage battery 16. Further, the housing unit 13 accommodates a management device 17 that controls and monitors the street light 2, a wireless terminal device 18 for external communication, and the like. On the lamp 11, an antenna 19 that transmits and receives radio waves for wireless communication is installed.

  FIG. 3 is a block diagram showing a control circuit of the street light 2. The management device 17 includes a microcomputer, and includes a central processing unit (CPU) 20 for processing and executing the overall control of the street light 2. A measurement information memory (RAM) 21 for reading and writing measurement information and the like is connected to the central processing unit 20 via a data bus (not shown) for exchanging data. The central processing unit 20 also includes a program memory (ROM) 22 in which programs for executing various controls are stored, and a calculation memory (RAM) 23 in which data necessary for calculations are stored. Connected. The central processing unit 20 is provided with a time measuring device 24, and time information is output from the time measuring device 24 to the central processing device 20 as needed.

  The solar cell panel 12 is used for an existing street lamp. As shown in FIG. 3, a storage battery 16 is connected to the solar battery panel 12 via a charging circuit 25, and the electric power generated by the solar battery panel 12 is stored in the storage battery 16, and an LED lamp is supplied from the storage battery 16. 15 etc. Moreover, the solar cell panel 12 is directly connected to the management device 17, and the management device 17 can measure ambient illuminance based on the output voltage value of the solar cell panel 12.

  The LED lamp 15 is connected to the storage battery 16 and the management device 17 via the lighting circuit 26. The lighting circuit 26 is a circuit for controlling the lighting state of the LED lamp 15, and by controlling the current value flowing through the LED lamp 15 according to the signal from the management device 17, the LED lamp 15 is turned on / off / Switch the blinking or adjust the brightness when lit.

  Each wireless terminal device 18 is assigned a unique address and is connected to the management device 17 and the antenna 19 so that the management device 17 can communicate with the outside wirelessly via the antenna 19. The wireless terminal device 18 also functions as a relay terminal that relays communication data addressed to another wireless terminal device from another wireless terminal device. Specifically, the wireless terminal device 18 can be configured by a ZigBee (registered trademark) terminal having a data transfer function. Such a ZigBee terminal is based on IEEE 802.15.4 and has an advantage of low cost and low power consumption.

  The wireless terminal device 18 has a communication distance of about 1 km where there is no obstacle, and where there is an obstacle such as a building or a tree, the wireless terminal device 18 has radio waves with other wireless terminal devices 18 having a radius of about 100 to 200 m. Can be sent and received directly. In the street lamp group system 1 of the present embodiment, the street lamps 2 are installed at intervals of about 50 m. This is a normal street light installation interval. For this reason, the wireless terminal device 18 of each street lamp 2 can transmit and receive radio waves to and from the wireless terminal devices 18 of a plurality of nearby street lamps 2. As shown in FIG. 1, the device 18 forms a wireless mesh network 4 having a net-like communication path.

  In such a wireless mesh network 4, the radio wave transmission range of each wireless terminal device 18 is not wide enough to cover the entire installation area of the street light 2, but each wireless terminal device 18 relays communication data. Thus, communication data can be transmitted and received between any wireless terminal devices 18 constituting the wireless mesh network 4. In addition, since the wireless mesh network 4 has a redundant network formed by a communication path formed in a mesh shape, even if a part of the communication paths is interrupted, a detour can be used. Communication between the wireless terminal devices 18 can be maintained.

  The router 3 connects the wireless mesh network 4 and the Internet X, and includes an Internet terminal device for connecting to the Internet X, the same wireless terminal device as the street lamp 2, and a control device. The router 3 is installed at a position where it can directly communicate with a plurality of street lamps 2 and is incorporated in the wireless mesh network 4 and is connected to the Internet by wire or wirelessly. As shown in FIG. 1, according to such a router 3, an administrator Z accesses the router 3 by an Internet terminal Y connected to the Internet X, and inputs necessary information such as an ID and a password, thereby enabling wireless communication. Communication with each management device 17 of the street light 2 connected to the mesh network 4 becomes possible.

  As described above, the administrator Z can communicate with the management device 17 of an arbitrary street lamp 2 from a remote place via the Internet X and the wireless mesh network 4. In this embodiment, the administrator Z communicates with each management device 17 via the Internet terminal Y to control the lighting mode of any street light 2 and monitor the presence or absence of abnormality. it can.

  More specifically, the lighting control mode of the street lamp 2 includes an illuminance control mode that is turned on and off according to the ambient illuminance, and a time control mode that is turned on, off, and turned on at a time set according to the sunshine duration. The administrator Z can switch between the illuminance control mode and the time control mode by transmitting a predetermined command to the management device 17 of any street light 2. In the illuminance mode, it is possible to set an illuminance threshold value for switching between lighting and extinction, or in the time control mode, to change the lighting time and the extinguishing time. Further, when the lighting of the street light 2 interferes with the fireworks viewing in the fireworks display, each street light 2 is forcibly turned off or the light emission intensity of the LED lamp 15 is reduced regardless of the lighting control mode. You can also.

  Further, the administrator Z can check the lighting state of each street light 2 and the charged state of the storage battery 16 from a remote place by communicating with the management device 17 of each street light 2 from the Internet terminal Y. Therefore, in the street light group system 1 of the present embodiment, the situation of each street light 2 is monitored from a remote place, and only when the abnormality is found, the street light 2 is visited and repaired. That's it.

  As described above, according to the street light group system 1 of the present embodiment, the administrator Z can manage all the street lights 2 constituting the system from a remote place. Thus, it is possible to save time and labor to go to the place where each street light 2 is installed. Further, by forming the wireless mesh network 4 between the street lamps 2, short-distance wireless communication is sufficient for the radio wave communication between the street lamps 2, so that the power consumption of the wireless terminal device 18 can be reduced, and other types of wireless communication There are no problems such as interference with communications or legal restrictions.

  In particular, in this embodiment, since the wireless mesh network 4 is formed between the street lights 2, the network function can be maintained even if a part of the radio wave communication path is blocked by a new building or the like. In addition, even if additional street lights are installed along with road expansion / expansion, site expansion / relocation, or some street lights are removed, a wireless mesh network can easily reconfigure the network configuration. it can. Therefore, according to the present embodiment, a system excellent in durability and flexibility can be realized.

  FIG. 4 shows a street light group system 1a of a modified example in which the configuration of the street light group system 1 of the above embodiment is partially changed. The street lamp group system 1a includes a portable operation terminal 5 that can be directly connected to the wireless mesh network 4 of the street lamp 2 in addition to the configuration of the street lamp group system 1 of the above embodiment. That is, the portable operation terminal 5 includes the same wireless terminal device as the street light 2, a control device for managing the street light 2, and an operation device for the administrator Z to operate. In this configuration, if the administrator Z carries the portable operation terminal 5 and moves to an area where radio communication with at least one street light 2 is possible, the portable operation terminal 5 is incorporated into the wireless mesh network 4. Thus, the administrator Z can communicate with the management device 17 of any street lamp 2 by the portable operation terminal 5. Therefore, in such a configuration, the manager Z can manage each street light 2 in one place even in a situation where the Internet X cannot be connected.

  FIG. 5 shows another modified street light group system 1b in which the configuration of the street light group system 1 of the above embodiment is partially changed. The street lamp group system 1b includes a fixed operation terminal 6 directly connected to the wireless mesh network 4 of the street lamp 2 in addition to the configuration of the street lamp group system 1 of the above embodiment. That is, the fixed operation terminal 6 includes the same wireless terminal device as the street light 2, a control device for managing the street light 2, and an operation device for the administrator Z to operate. In addition, the wireless mesh network 4 is installed at a position where it can directly wirelessly communicate with a plurality of street lamps 2. In such a configuration, the administrator Z can communicate with the management device 17 of any street lamp 2 by operating the fixed operation terminal 6, and can manage even if the Internet X cannot be connected. Person Z can manage each street light 2 in one place.

  The street lamp group system in the present invention is not limited to the embodiment described above, and various modifications can be made without departing from the scope of the present invention. For example, in the above embodiment, the router 3 and the fixed operation terminal 6 are installed separately from the street light 2, but the router 3 and the fixed operation terminal 6 are integrated with any of the street lights constituting the system. It can also be arranged. Further, the router 3 and the fixed operation terminal 6 may be disposed integrally.

  In addition, the street light 2 according to the above embodiment is only an example, and various street lights can be adopted for the street light group system of the present invention, and the management is performed according to the street lights constituting the system. The aspect can also be changed variously. For example, in the present invention, the street light management device may monitor the outside air temperature, the operating temperature of the LED lamp, the power efficiency, the accumulated lighting time, and the like. Further, when a hybrid solar type street lamp is employed, if the battery is over-discharged due to the charge / discharge characteristics of the battery, the LED illumination may be dimmed to control the power. In recent years, there is a street light with an emergency backup power supply so that the light can be maintained even if a power failure occurs in the event of a disaster. If such a street light is used, the status of the backup power supply can be monitored remotely. It becomes. Further, according to the system of the present invention, the street light can be used as a signal for disaster countermeasures. For example, when a tsunami warning or heavy rain warning is issued, the street light in the area may be blinked or lit in a color different from the normal time. In such a case, the lighting color or lighting mode may be changed for each type of alarm.

1, 1a, 1b Street light group system 2 Street light 3 Router 4 Wireless mesh network 5 Portable operation terminal 6 Fixed operation terminal 12 Solar panel 15 LED lamp 16 Storage battery 17 Management device 18 Wireless terminal device 19 Antenna X Internet Y Internet terminal Z Admin

Claims (4)

A street light group system comprising a plurality of street lights,
Each street light includes a management device that controls and / or monitors the street light, and a wireless terminal device that enables the management device to communicate wirelessly with the outside.
The wireless terminal device has a data transfer function for relaying communication data between other wireless terminal devices,
Each street light is installed at an interval at which wireless terminal devices can directly communicate with each other between neighboring street lights, and a wireless mesh network is formed by the wireless terminal devices of each street light. The street light group system is configured so that the administrator can communicate with any street light management device.   A router for connecting the wireless mesh network and the wide area network is provided, and an administrator is configured to be able to communicate with a management device for an arbitrary street light via the wide area network and the wireless mesh network. The street light group system according to claim 1.   A portable operation terminal comprising a wireless terminal device constituting the wireless mesh network, a control device for managing street lights, and an operation device operated by an administrator, and operating the portable operation terminal The street light group system according to claim 1 or 2, wherein an administrator can communicate with an arbitrary street light management device via the wireless mesh network. It comprises a wireless terminal device constituting the wireless mesh network, a control device for managing street lights, and an operation device operated by an administrator, and can communicate directly with at least one street light wireless terminal device. With fixed terminal devices installed at various locations,
4. The system according to claim 1, wherein an administrator can communicate with an arbitrary street light management device via the wireless mesh network by operating the fixed operation terminal. 5. The street light group system according to item 1.

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