JP2020035391A - Electric pole monitoring system and electric pole monitoring method - Google Patents

Abstract

To provide a system that monitors a state of an electric pole.SOLUTION: An electric pole monitoring system comprises: a plurality of beacons which are installed on a plurality of electric poles respectively and are arranged in a radio wave arrival distance of at least another beacon; and a control device which can communicate with at least one beacon. Each of the beacons comprises: a sensor unit for detecting an inclination of the electric pole on which the beacon is installed; and a first communication unit that transmits a signal containing inclination information including the inclination of the electric pole detected by the sensor unit and identification information identifying the beacon installed on the electric pole. The control device comprises: a second communication unit for receiving the signal containing the inclination information and the identification information from each beacon; and an arithmetic unit that determines whether or not the inclination of the electric pole included in the inclination information is equal to a predetermined value or greater. The second communication unit transmits the signal containing the inclination information including the inclination of the electric pole and the identification information that identifies the beacon installed on the electric pole to a predetermined terminal when the inclination of the electric pole is equal to the prescribed value or greater.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a utility pole monitoring system and a utility pole monitoring method.

There is a beacon (radio beacon) that notifies a receiver of various information such as a position by emitting an electromagnetic wave or the like. Some beacons transmit information to mobile terminals. For example, some mobile terminal beacons use Bluetooth (registered trademark). By receiving identification information from a plurality of transmitters, the receiving-side mobile terminal can know its own position.

  In addition, there is a technique of configuring a beacon mesh using a plurality of beacons. A beacon that constitutes a beacon mesh (also referred to as a mesh-type beacon) has a function of mutually communicating with other beacons installed within a radio wave reach, and forms a multi-hop wireless network as a whole. The mesh-type beacon transmits a radio beacon including its own identification information to other beacons. The beacon mesh can be connected to other networks via a gateway. The gateway can individually transmit a setting change command to beacons in the beacon mesh.

JP 2018-4387 A

  BACKGROUND ART When a power transmission cable and a communication cable are laid on the ground, electric poles for supporting the cables are installed along a road, along a track, or the like. Electric poles (concrete pole columns, CP columns) are deteriorated under the influence of the natural environment such as wind, rain, snowfall, cold and warm, and sunlight, and may cause cracks, breakage, and collapse. When a utility pole collapses, power outages, communication failures, and traffic obstacles can occur. Therefore, it is required to prevent the telephone pole from collapsing by recognizing the inclination of the telephone pole and taking predetermined measures such as replacing the telephone pole before the telephone pole collapses. However, conventionally, the monitoring of the deterioration status (state) of the utility pole is performed by visual observation by an operator or the like, so that the discovery of the inclination of the utility pole may be delayed. In addition, monitoring by a worker by visual observation or the like requires time and cost, and furthermore, the inclination of the telephone pole may be overlooked.

  Furthermore, when a sensor that measures the inclination is attached to each telephone pole and the detection result obtained by the sensor is acquired by short-range wireless communication, communication between the gateway that acquires the detection result from the telephone pole and each telephone pole installed at various positions is performed. Therefore, there is a problem in that the arrangement of a high-density gateway and the improvement of radio wave intensity are required. In addition, the installation of a gateway may be required with the installation of a new telephone pole.

  An object of the present invention is to provide a system for monitoring the state of a utility pole.

In order to solve the above problems, the following means are adopted.
That is, the first aspect is:
A plurality of beacons installed on each of a plurality of telephone poles installed in a predetermined space, capable of communicating with each other within a predetermined radio wave reach, transmitting and receiving a predetermined signal, and each of the plurality of beacons is A utility pole monitoring system comprising: a plurality of beacons disposed within the radio range of at least one other beacon; and a control device communicable with at least one beacon of the plurality of beacons,
The beacon is:
A sensor unit for detecting the inclination of the telephone pole on which the beacon is installed,
A first communication unit that transmits a signal including inclination information including the inclination of the telephone pole detected by the sensor unit and identification information for identifying the beacon installed on the telephone pole,
The control device includes:
A second communication unit that receives a signal including the tilt information and the identification information from the beacon,
A computing unit that determines whether the inclination of the utility pole included in the inclination information is equal to or greater than a predetermined value,
The second communication unit, when the inclination of the telephone pole is a predetermined value or more, the inclination information including the inclination of the telephone pole, and a signal including identification information for identifying the beacon installed on the telephone pole. , Send to a given terminal,
A utility pole monitoring system.

  According to the first aspect, when the inclination of the telephone pole is equal to or greater than a predetermined value, the inclination information of the telephone pole is transmitted to a predetermined terminal. When the predetermined terminal is carried by the worker who monitors the state of the utility pole, the worker can recognize the inclination of the utility pole when the utility pole is inclined.

The second aspect is
A plurality of beacons installed on each of a plurality of telephone poles installed in a predetermined space, capable of communicating with each other within a predetermined radio wave reach, transmitting and receiving a predetermined signal, and each of the plurality of beacons is A plurality of beacons arranged within the radio wave range of at least one other beacon, a control device capable of communicating with at least one beacon of the plurality of beacons, and a server capable of communicating with the control device And a utility pole monitoring system comprising:
The beacon is:
A sensor unit for detecting the inclination of the telephone pole on which the beacon is installed,
A first communication unit that transmits a signal including inclination information including the inclination of the telephone pole detected by the sensor unit and identification information for identifying the beacon installed on the telephone pole,
The control device includes:
A second communication unit that receives a signal including the tilt information and the identification information from the beacon and transmits the signal to a server,
The server is
A third communication unit that receives a signal including the tilt information and the identification information from the control device;
A computing unit that determines whether the inclination of the utility pole included in the inclination information is equal to or greater than a predetermined value,
The third communication unit, when the inclination of the telephone pole is equal to or more than a predetermined value, a signal including the inclination information including the inclination of the telephone pole and identification information for identifying the beacon installed on the telephone pole. , Send to a given terminal,
A utility pole monitoring system.

An aspect of the disclosure may be realized by a program being executed by an information processing device. That is, the configuration of the disclosure can be specified as a program for causing an information processing apparatus to execute the processing executed by each unit in the above-described embodiment, or a computer-readable recording medium that records the program. Further, the configuration of the disclosure may be specified by a method in which the information processing device executes the processing executed by each unit described above. The configuration of the disclosure may be specified as a system including an information processing device that performs a process performed by each unit described above.

  ADVANTAGE OF THE INVENTION According to this invention, the system which monitors the state of a telephone pole can be provided.

FIG. 1 is a diagram illustrating a configuration example of a system according to the embodiment. FIG. 2 is a diagram illustrating an example of a functional block of the beacon according to the embodiment. FIG. 3 is a diagram illustrating an example of a functional block of the control device according to the embodiment. FIG. 4 is a diagram illustrating an example of a functional block of the terminal according to the embodiment. FIG. 5 is a diagram illustrating an example of a functional block of the server according to the embodiment. FIG. 6 is a diagram illustrating an example of a hardware configuration of the information processing apparatus. FIG. 7 is a diagram illustrating an example of an operation flow of a beacon in the system according to the embodiment. FIG. 8 is a diagram illustrating an example of an operation flow of the control device in the system of the present embodiment. FIG. 9 is a diagram illustrating an example of an operation flow of the server in the system of the present embodiment. FIG. 10 is a diagram illustrating an example of an operation sequence at the time of time synchronization of a beacon in a beacon mesh.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. The configuration of the embodiment is an exemplification, and the configuration of the invention is not limited to the specific configuration of the disclosed embodiment. In carrying out the invention, a specific configuration according to the embodiment may be appropriately adopted.

[Embodiment]
"System configuration"
FIG. 1 is a diagram illustrating a configuration example of a system according to the embodiment. In the present embodiment, in addition to the wireless beacon transmitted and received for positioning and the like, a transmitting device of the wireless beacon is referred to as a beacon. The system according to the present embodiment includes a beacon 10 (beacon 10A to beacon 10E in FIG. 1), a control device 20, a terminal 30, a server 40, and a plurality of utility poles 50 (in FIG. 1, utility poles 50A to 50E). The system according to the present embodiment is a system that monitors the telephone pole 50. The system of the present embodiment mainly monitors the inclination of the utility pole 50. Each beacon 10 is fixedly installed on one of the utility poles 50. The power pole 50 is provided with a communication cable and a power transmission cable between the other power poles 50 and the like. The terminal 30 is carried by, for example, an operator who monitors the state of a telephone pole. The beacon 10 is fixedly installed on a power pole 50 to be monitored. The beacons 10A to 10E installed on the telephone poles 50A to 50E form a multi-hop wireless network. The beacon 10 is desirably installed at a high position on the utility pole 50, but the position at which the beacon 10 is installed on the utility pole 50 is not limited.

The beacons 10 are arranged in principle at one ratio for one electric pole 50. The beacon 10 is fixed to the electric pole 50 by a belt or the like so as not to move with respect to the electric pole 50. The beacon 10 transmits a wireless beacon including identification information for identifying the beacon 10 and a transmission date and time. In addition, the beacon 10 according to the present embodiment has a function of mutually communicating with another beacon 10 installed within a radio wave reach, and forms a multi-hop wireless network as a whole. Further, all the beacons 10 are arranged within the radio wave reach of at least one other beacon. When there is no beacon 10 built in another power pole 50 within the radio wave reach of the beacon 10 installed on a certain power pole 50, one or more new beacons 10 are arranged within the radio wave reach. , All beacons 10 can be located within radio range of at least one other beacon. The beacon 10 can receive the identification information of the terminal 30 from the terminal 30. The beacon 10 transmits the identification information of the beacon 10 itself, the reception strength of the signal from the terminal 30, the information indicating the state of the beacon 10, the information acquired from the sensor, and the like to the other beacon 10 together with the identification information from the terminal 30. Can be sent to The information indicating the state of the beacon 10 or the like may include information received from another beacon 10. Note that a plurality of beacons that can communicate with each other are collectively called a beacon mesh.

The beacon 10 transmits a beacon signal including identification information of the beacon 10 itself. This identification information is information that can uniquely identify each beacon 10. The beacon 10 transmits a beacon signal and communicates with another device (such as the beacon 10) according to a wireless communication standard such as Bluetooth (registered trademark), ZigBee (registered trademark), or wireless LAN. In the present embodiment, the beacon 10 can adopt Bluetooth Low Energy as a wireless communication standard and transmit an advertisement packet as a beacon signal. The beacon 10 is driven by, for example, a battery.

Although FIG. 1 illustrates five sets of the electric pole 50 and the beacon 10, the set of the electric pole 50 and the beacon 10 is not limited to five sets. The beacon 10 includes, for example, a microcontroller and an antenna, and realizes various functions by cooperating with each other. The beacon 10 includes various sensors as internal sensors. Various sensors may be connected to the beacon 10 as external sensors. The various sensors include a sensor (an acceleration sensor, an inclination sensor, and the like) that measures the inclination of the utility pole 50. The beacon 10 can measure the remaining amount of a battery built therein. The external sensor may have a wireless communication function by Bluetooth or the like. At this time, the external sensor can transmit a detection result or the like in a Bluetooth packet.

  The control device 20 is a device that centrally controls the operations of the plurality of beacons 10. The control device 20 receives the information transmitted from the beacon 10 of the beacon mesh, for example, and transmits the information to the server 40. In addition, the control device 20 transmits, for example, identification information including identification information for identifying any one of the plurality of beacons 10 and predetermined information to the surrounding beacons 10. On the other hand, the beacon 10 relays the received specific information to the neighboring beacons 10 and, when receiving specific information including identification information indicating itself, performs a predetermined process based on the specific information. The specific information may include, for example, information for controlling the operation of the beacon 10. The control device 20 operates as a gateway that connects the beacon mesh and the network 100. Control device 20 is arranged at a position where it can communicate with at least one beacon 10.

  The terminal 30 is connected to the network 100 and receives information of the beacon 10 from the server 40. The terminal 30 is carried, for example, by an operator who monitors the telephone pole 50, or attached to a predetermined object. The terminal 30 can receive a signal from the beacon 10 in the vicinity of the telephone pole 50 on which the beacon 10 is installed. Although FIG. 1 shows one terminal 30, the number of terminals 30 is not limited to one.

  The server 40 acquires a data set such as identification information, transmission date and time, and inclination information of each beacon 10 via the beacon mesh and the control device 20, for example. The server 40 can acquire information indicating the state of the beacon 10 and the like. The server 40 outputs the obtained information to the terminal 30 or the like via the network 100. The server 40 may output information or the like corresponding to the terminal 30.

The power pole 50 is provided with a communication cable and a power transmission cable between the other power poles 50 and the like. The beacons 10 are fixedly installed on the utility poles 50, respectively. The distance between the power pole 50 and another adjacent power pole 50 is, for example, about 20 m, but the distance is not limited to this. In principle, the distance is shorter than the distance at which the beacons 10 can communicate with each other.

<Functional configuration of beacon>
FIG. 2 is a diagram illustrating an example of a functional block of the beacon according to the embodiment. In addition, the beacon 10 is installed in plurality on the electric pole 50 or the like at an interval equal to or less than a predetermined radio wave reachable distance between them. For example, they are installed at intervals of about 20 m depending on the installation location. The beacon 10 includes a communication unit 11, a storage unit 12, and a sensor unit 13. Instead of the sensor unit 13, it may be connected to an external sensor via the communication unit 11. The communication unit 11 is realized by, for example, application software (also referred to as a program) installed in the beacon 10 using the communication function of the beacon 10.

  The communication unit 11 bidirectionally transmits and receives information between the other beacons 10, the terminal 30, and the control device 20. For example, mutual communication may be performed based on a profile such as GATT in BLE (Bluetooth Low Energy). The communication unit 11 may perform connection-type communication.

  The communication unit 11 transmits, to the control device 20 and the server 40, a signal including information detected by the sensor unit 13 and the like, identification information indicating the communication device 11 and the like.

  When receiving the specific information including the identification information of another beacon 10, the communication unit 11 relays the specific information to the neighboring beacons 10. On the other hand, when the specific information including the identification information indicating itself is received, the specific information is stored in the storage unit 12, and a predetermined process is performed based on the specific information. As the specific information, for example, when the control device 20 or the server 40 recognizes that the inclination of the telephone pole 50 on which the beacon 10 is installed is equal to or more than a predetermined value, a signal including the inclination of the telephone pole is transmitted as the specific information. There is a process to shorten the time interval. Further, the communication unit 11 transmits a wireless beacon including identification information for identifying the beacon 10 based on the information held in the storage unit 12. The wireless sign may include date and time information indicating the transmission time. Specifically, technology such as BLE can be used, and broadcast communication of a wireless sign may be performed.

  In addition, the communication unit 11 may respond to the control device 20 with the information held in the storage unit 12 via a beacon mesh network in response to a request from the control device 20. The information stored in the storage unit 12 may include information acquired by the sensor unit 13 including the internal sensor of the beacon 10 and an external sensor. Further, unique information such as specific information transmitted and received between the beacons 10 may be assigned in advance. At this time, the communication unit 11 stores the identification information of the transferred information in the storage unit 12 once, and when transferring the information, the identification information of the information is the same as the identification information of the information transferred in the past to the storage unit 12. It is checked whether or not they match, and if the information has been transferred in the past, the information need not be transferred. This can prevent the same information from being continuously transferred in the beacon mesh.

The storage unit 12 is a nonvolatile memory, for example, an EEPROM (Electrically Erasable Programmable Read-Only Memory) such as a flash memory included in a microprocessor.
) And the like. In addition, the storage unit 12 stores predetermined identification information of the beacon 10, a set value of the radio wave intensity when the communication unit 11 transmits the wireless beacon, and the like. The storage unit 12 stores information included in the received signal, reception strength of the signal, and the like.

The sensor unit 13 includes various sensors as internal sensors. The various sensors include sensors (acceleration sensor, inclination sensor, etc.) that measure the inclination of the utility pole 50 on which the beacon 10 is installed. Various sensors may be connected to the beacon 10 as external sensors. The external sensor may be used instead of the sensor unit 13. In the initial state, it is assumed that the axial direction of the electric pole 50 on which the beacon 10 is installed is the direction of the gravitational acceleration detected by the sensor that measures the inclination. In the sensor unit 13, the direction of the gravitational acceleration in the initial state is defined as a first direction. When the electric pole 50 is inclined, the sensor unit 13 of the beacon 10 installed on the electric pole 50 is inclined together with the electric pole 50 so that the direction of the gravitational acceleration in the sensor unit 13 is changed from the first direction in the sensor unit 13. By shifting, the inclination is detected.

<Functional configuration of control device>
FIG. 3 is a diagram illustrating an example of a functional block of the control device according to the embodiment. The control device 20 is, for example, a general computer, and includes a beacon communication unit 21, a communication unit 22, and a storage unit 23.

  The beacon communication unit 21 performs bidirectional communication with the beacon 10. That is, a signal including specific information is transmitted, and a signal including alive information, information held by the beacon 10, information acquired by the beacon 10, and the like are received from the beacon 10. The control device 20 may be communicably connected to one beacon 10 by a wire or the like. The beacon communication unit 21 transmits a time synchronization signal to the beacon 10 of the beacon mesh.

  The communication unit 22 transmits and receives information to and from the server 40 and a device (not shown) via the network 100 such as the Internet or a dedicated line. In addition, the communication unit 22 transmits the inclination information of the telephone pole 50 received from the beacon 10 of the beacon mesh to the server 40.

  The storage unit 23 is implemented by, for example, a hard disk drive (HDD), a solid state drive (SSD), a flash memory, or the like. The storage unit 23 stores position information indicating the locations where the plurality of beacons 10 are installed, operation settings, and the like, in association with the identification information (beacon ID) of each beacon.

<Functional configuration of terminal>
FIG. 4 is a diagram illustrating an example of a functional block of the terminal according to the embodiment. The terminal 30 is, for example, a computer such as a smartphone or a tablet terminal, and includes a sign information transmitting unit 31, an intercommunication unit 32, a storage unit 33, a display unit 34, and a position detection unit 35. Note that the sign information transmitting unit 31 and the mutual communication unit 32 are realized by, for example, application software (also referred to as a program) installed in the terminal 30 using the communication function of the terminal 30.

  The beacon information transmitting unit 31 transmits a wireless beacon including identification information for identifying the terminal 30 as the beacon 10 based on the information held in the storage unit 33, and notifies the receiving apparatus of the proximity notification. I do. The wireless sign may include date and time information indicating the transmission time. Specifically, technology such as BLE (Bluetooth Low Energy) can be used, and broadcast communication of a wireless sign may be performed. The wireless beacon (information) including the identification information of the terminal 30 transmitted by the terminal 30 may be received by a plurality of beacons.

The mutual communication unit 32 bidirectionally transmits and receives information to and from the other beacon 10, the terminal 30, and the control device 20. For example, mutual communication may be performed based on a profile such as GATT in BLE. The mutual communication unit 32 may perform connection-type communication. Further, when receiving the specific information including the identification information of another beacon 10, the mutual communication unit 32 relays the specific information to the neighboring beacons 10. On the other hand, when the specific information including the identification information indicating itself is received, the specific information is stored in the storage unit 33, and a predetermined process is performed based on the specific information. Further, the mutual communication unit 32 may respond to the control device 20 via the beacon mesh network with the information held in the storage unit 33 in response to a request from the control device 20. The mutual communication unit 32 receives the wireless beacon transmitted by the beacon 10 and stores the wireless beacon in the storage unit 33.

  The mutual communication unit 32 transmits and receives information to and from the server 40 via the network 100 such as the Internet. The mutual communication unit 32 receives, for example, information including the position information of the utility pole 50 having the inclination angle equal to or larger than the predetermined value from the server 40 and causes the storage unit 33 to store the information.

  The storage unit 33 is a volatile memory or a nonvolatile memory. For example, it is realized by a hard disk drive (HDD), a solid state drive (SSD), a random access memory (RAM), a read only memory (ROM), or an EEPROM such as a flash memory. The storage unit 33 stores identification information for identifying the terminal 30 from the terminal 30. As the identification information for identifying the terminal 30, an ID provided by an OS (Operating System) such as a smartphone may be used, or the server 40 may use the identification information unique to the application software of the terminal 30. May be issued. The storage unit 33 stores position information indicating the installation locations of the plurality of beacons 10 in association with the identification information (beacon ID) of each beacon 10. Further, the storage unit 33 stores the position information of the position where the identification information of the beacon 10 is received, in association with the identification information of the beacon 10.

  The display unit 34 displays the position information and other information stored in the storage unit 33 on a monitor included in the terminal 30.

The position detection unit 35 includes a GPS (Global Positioning System) antenna, an acceleration sensor,
This is realized by an inclination sensor or the like. The position detection unit 35 detects an absolute position of the terminal 30 or a relative position from a predetermined position using each sensor or the like.

<Functional configuration of server>
FIG. 5 is a diagram illustrating an example of a functional block of the server according to the embodiment. The server 40 is, for example, a stationary computer, and includes a communication unit 41, a calculation unit 42, and a storage unit 43. The control device 20 and the server 40 may be integrated and operate as one control device.

  The communication unit 41 transmits and receives information to and from the control device 20, the terminal 30, and the like via the network 100 such as the Internet.

  The calculation unit 42 performs a predetermined calculation based on information from the beacon 10 and the terminal 30. The calculation unit 42 calculates, for example, the position where the terminal 30 is located.

  The storage unit 43 includes, for example, an HDD, an SSD, and a flash memory. The storage unit 43 receives information from the terminal 30 via the beacon mesh, the control device 20, and information indicating the position of the terminal 30 calculated based on the information. May be stored in advance, and information about the periphery of the position where the beacon 10 is installed may be stored in advance. The storage unit 43 associates identification information (beacon ID) of each beacon 10 of the beacon mesh with position information (position information of the telephone pole 50) indicating the location of each beacon, inclination information (specific information) of the telephone pole 50, and the like. And store it.

<Device configuration>
The control device 20, the terminal 30, and the server 40 are a smartphone, a mobile phone, a tablet terminal, a car navigation device, a PDA (Personal Digital Assistant), and a PC (Personal).
This can be realized using a dedicated or general-purpose computer such as a computer, or an electronic device equipped with the computer. The server 40 can be realized using a dedicated or general-purpose computer such as a PC or a workstation (WS, Work Station), or an electronic device equipped with a computer.

  FIG. 6 is a diagram illustrating an example of a hardware configuration of the information processing apparatus. The information processing device 90 shown in FIG. 6 has a configuration of a general computer. The control device 20, the terminal 30, and the server 40 are realized by an information processing device 90 as shown in FIG. The information processing device 90 includes a processor 91, a memory 92, a storage unit 93, an input unit 94, an output unit 95, and a communication control unit 96. These are connected to each other by a bus. The memory 92 and the storage unit 93 are computer-readable recording media. The hardware configuration of the information processing apparatus is not limited to the example illustrated in FIG. 6, and the components may be appropriately omitted, replaced, or added.

  In the information processing device 90, the processor 91 loads the program stored in the recording medium into the work area of the memory 92 and executes the program, and the components are controlled through the execution of the program, thereby meeting the predetermined purpose. Function can be realized.

  The processor 91 is, for example, a CPU (Central Processing Unit) or a DSP (Digital Signal Processor).

  The memory 92 includes, for example, a random access memory (RAM) and a read only memory (ROM). The memory 92 is also called a main storage device.

The storage unit 93 is, for example, an EPROM (Erasable Programmable ROM), a hard disk drive (HDD, Hard Disk Drive), or a solid state drive (SSD, Solid State Drive). The storage unit 93 can include a removable medium, that is, a portable recording medium. The removable medium is, for example, a USB (Universal Serial Bus) memory or a disk recording medium such as a CD (Compact Disc) or a DVD (Digital Versatile Disc). The storage unit 93 is also called a secondary storage device.

  The storage unit 93 stores various programs, various data, and various tables in a recording medium in a readable and writable manner. The storage unit 93 stores an operating system (OS), various programs, various tables, and the like. The information stored in the storage unit 93 may be stored in the memory 92. The information stored in the memory 92 may be stored in the storage unit 93.

  The operating system is software that mediates between software and hardware, manages memory space, manages files, manages processes and tasks, and the like. The operating system includes a communication interface. The communication interface is a program for exchanging data with another external device or the like connected via the communication control unit 96. The external device and the like include, for example, another information processing device, an external storage device, and the like.

  The input unit 94 includes a keyboard, a pointing device, a wireless remote controller, a touch panel, and the like. In addition, the input unit 94 may include a video or image input device such as a camera, or an audio input device such as a microphone.

The output unit 95 includes a display device such as a CRT (Cathode Ray Tube) display, an LCD (Liquid Crystal Display), a PDP (Plasma Display Panel), an EL (Electroluminescence) panel, and an output device such as a printer. Further, the output unit 95 may include a sound output device such as a speaker.

The communication control unit 96 is connected to another device, and controls communication between the information processing device 90 and the other device. The communication control unit 96 is, for example, a LAN (Local Area Network) interface board, a wireless communication circuit for wireless communication such as Bluetooth (registered trademark), or a communication circuit for telephone communication. The LAN interface board and the wireless communication circuit are connected to a network such as the Internet.

  The computer that implements the control device 20, the terminal 30, and the server 40 implements each function by causing a processor to load a program stored in a secondary storage device into a main storage device and execute the program. The storage unit of each device is provided in a storage area of the main storage device or the secondary storage device.

<Operation example of beacon>
FIG. 7 is a diagram illustrating an example of an operation flow of a beacon in the system of the present embodiment. The beacon 10 installed on the telephone pole 50 repeats a sleep period in which it does not operate and a transmission and reception period in which signals are transmitted and received in synchronization with other beacons 10 in the beacon mesh in order to reduce power consumption. When the beacon 10 enters the transmission / reception period, the operation flow in FIG. 7 is started. The beacon 10 does not need to have a sleep period when there is no need to reduce power consumption (for example, when there is no problem with power supply). Time synchronization in the beacon 10 of the beacon mesh will be described later.

In S101, the beacon 10 detects an inclination of the beacon 10 itself by the sensor unit 13. Since the beacon 10 is installed on the utility pole 50, the inclination of the beacon 10 itself corresponds to the inclination of the utility pole 50. Assuming that the direction of the gravitational acceleration in the initial state (when the beacon 10 is installed on the telephone pole 50) is the first direction in the beacon 10, the angle between the first direction in the beacon 10 and the direction of the gravitational acceleration is the inclination of the telephone pole 50. Angle. The greater the angle is, the greater the inclination of the utility pole 50 is. The greater the inclination of the utility pole, the higher the possibility that the utility pole 50 will collapse. The angle is an example of the inclination of the utility pole 50 to be detected. The inclination is defined by the acceleration of the sensor unit 13 in the first direction in the first direction (gravity acceleration in the first direction in the initial state) and the current acceleration of the sensor unit 13 in the first direction (gravity acceleration in the current first direction). It may be expressed as the absolute value of the difference. The sensor unit 13 stores the detected inclination in the storage unit 12 as inclination information of the telephone pole 50. Here, since the acceleration of the electric pole 50 (the acceleration of the beacon 10) when the electric pole 50 is tilted is considered to be much smaller than the gravitational acceleration (9.8 m / s ² ), the acceleration is detected by the sensor unit 13 of the beacon 10. The resulting acceleration is considered to be due to gravitational acceleration. As the inclination information, the detection value itself of the sensor unit 13 by the three-axis acceleration sensor may be used. In this case, the calculation of the inclination angle of the telephone pole 50 is performed by the control device 0, the server 40, and the like.

In S102, the beacon 10 transmits a signal including the inclination information of the telephone pole 50 to the beacon 10 of the beacon mesh from the communication unit 11 to another beacon 10 or the like. The signal includes at least tilt information and identification information for identifying the beacon 10. The communication unit 11 acquires the inclination information included in the signal from the storage unit 12. The signal is, for example, an advertisement signal (broadcast signal). The signal transmitted from the beacon 10 may be a predetermined data signal of about 10 bytes used in mesh communication by Bluetooth. The size of the signal used in the mesh communication may be smaller than the size of the advertising signal. The beacon 10 may transmit the signal as a wireless beacon of the beacon 10. The signal including the tilt information may include unique identification information indicating that the signal includes the tilt information. The signal including the inclination information may include time information indicating the current time.

  In S103, the communication unit 11 of the beacon 10 checks whether a signal has been received from another beacon 10 or the like. If a signal has been received from another beacon 10 or the like (S103; YES), the process proceeds to S104. If a signal has not been received from another beacon 10 or the like (S103; NO), the process proceeds to S105.

  In S104, the communication unit 11 of the beacon 10 checks the content of the signal received from another beacon 10 or the like. The communication unit 11 of the beacon 10 checks whether or not the information included in the received signal includes a predetermined instruction. The communication unit 11 of the beacon 10 stores information included in the received signal in the storage unit 12. Further, the communication unit 11 of the beacon 10 transmits the received signal to other beacons 10 and the like in the vicinity. When the received signal is the same signal as the signal transmitted before, the beacon 10 does not transmit the signal.

  In S105, the communication unit 11 of the beacon 10 checks whether the transmission / reception period of the beacon 10 has ended. If the transmission / reception period has ended (S105; YES), the beacon 10 puts itself into sleep, assuming that the sleep period has entered. If the transmission / reception period has not ended (S105; NO), the process returns to S101.

  Thereby, the inclination information of the electric pole 50 detected by the beacon 10 is transmitted to the device in the beacon mesh by a signal including the inclination information. The signal is finally received by the control device 20. The transmission of the signal including the inclination information in S102 may be performed in a transmission / reception period, for example, once in a predetermined period (for example, once every three seconds). The frequency of detecting the inclination by the sensor unit 13 may be lower than the frequency of transmitting the signal including the inclination information. When transmitting a signal including tilt information without detecting the tilt, the tilt information is the latest detected latest tilt information stored in the storage unit 12. In addition, when the angle of inclination of the telephone pole 50 is equal to or greater than a predetermined value (when the telephone pole is about to fall), the beacon 10 increases the frequency of inclination detection by the sensor unit 13 and the transmission frequency of a signal including inclination information. May be. The change of each frequency may be performed by specific information transmitted from the control device 20 and the server 40. The change of the communication time interval may be performed using the function of the beacon mesh.

<Operation example of control device>
FIG. 8 is a diagram illustrating an example of an operation flow of the control device in the system of the present embodiment. As described above, the beacon 10 installed on the power pole 50 repeats a sleep period in which it does not operate and a transmission / reception period in which signals are transmitted / received in synchronization with other beacons 10 in the beacon mesh in order to reduce power consumption. Therefore, the control device 20 receives a signal from the beacon 10 during the transmission / reception period. When the beacon 10 of the beacon mesh enters the transmission / reception period, the operation flow of FIG. 8 is started. Since the time synchronization signal is transmitted from the control device 20, the control device 20 can recognize whether the beacon 10 of the beacon mesh is in the transmission / reception period or in the sleep period.

  In S201, the beacon communication unit 21 of the control device 20 checks whether a signal including tilt information has been received from the beacon 10 of the beacon mesh. The beacon communication unit 21 determines whether or not the signal includes tilt information, for example, based on identification information of a signal included in the received signal. When the signal including the inclination information is received from the beacon 10 (S201; YES), the process proceeds to S202. When the signal including the inclination information is not received from the beacon 10 or the like (S201; NO), the process proceeds to S204.

  In S202, the beacon communication unit 21 of the control device 20 extracts the inclination information of the telephone pole 50 and the identification information of the beacon 10 from the signal including the received inclination information. The identification information of the beacon 10 corresponds to the telephone pole 50 on which the beacon 10 is installed. The beacon communication unit 21 stores the extracted inclination information and the identification information in the storage unit 23 in association with each other.

  In S203, the communication unit 22 of the control device 20 extracts the inclination information of the telephone pole 50 and the identification information of the beacon 10 installed on the telephone pole 50 stored in the storage unit 23, and transmits a signal including the extracted information to the server 40. Send to

  In S204, the control device 20 checks whether or not the transmission / reception period of the beacon 10 of the beacon mesh has ended. When the transmission / reception period ends (S204; YES), the process ends. If the transmission / reception period has not ended (S204; NO), the process returns to S201.

  Thereby, the control device 20 receives a signal including the inclination information of the electric pole 50 from each beacon 10, and transmits the inclination information of each electric pole 50 to the server 40.

<Server operation>
FIG. 9 is a diagram illustrating an example of an operation flow of the server in the system of the present embodiment. The server 40 receives the inclination information of each utility pole 50 from the control device 20, and transmits the inclination information of the utility pole 50 to the terminal 30 when the inclination of the utility pole 50 is equal to or more than a predetermined value. The operation flow of FIG. 9 operates as long as the utility pole monitoring continues in the system of the present embodiment.

  In S301, the communication unit 41 of the server 40 confirms whether or not a signal including tilt information has been received from the control device 20. When a signal including the inclination information is received from control device 20 (S301; YES), the process proceeds to S302. If the signal including the inclination information has not been received from the control device 20 (S301; NO), the process proceeds to S304.

  In S302, the communication unit 41 of the server 40 extracts the inclination information of the telephone pole 50 and the identification information of the beacon 10 from the received signal including the inclination information, and stores the extracted information in the storage unit 43. The calculation unit 42 of the server 40 extracts the inclination information of the telephone pole 50 and the identification information of the beacon 10 stored in the storage unit 43. The server 40 determines whether the inclination of the utility pole 50 in the extracted inclination information is equal to or greater than a predetermined value. When the inclination information of the telephone pole 50 is a detected value of the sensor of the sensor unit 13 of the beacon 10, the server 40 calculates the inclination of the telephone pole 50 from the detected value. If the inclination is equal to or greater than the predetermined value (S302; YES), the process proceeds to S303. If the inclination is less than the predetermined value (S302; NO), the process proceeds to S304.

  In S303, the communication unit 41 of the server 40 transmits the signal including the inclination information of the inclination of the electric pole 50 determined to be equal to or more than the predetermined value in S302 and the identification information of the beacon 10 installed on the electric pole 50 to the terminal 30. Send to.

  In S304, the server 40 determines whether or not the utility pole monitoring process ends. The utility pole monitoring processing for monitoring the inclination of the utility pole 50 or the like may be terminated, for example, for maintenance of the server 40 or the like. The end of the utility pole monitoring process is instructed by, for example, a predetermined operation performed on the server 40 by the user. When the utility pole monitoring process ends (S304; YES), the operation flow of FIG. 9 ends. If the utility pole monitoring process is not completed (S304; NO), the process returns to S301.

  On the other hand, when the terminal 30 receives a signal including the inclination information of the telephone pole 50 and the identification information of the beacon 10 installed on the telephone pole 50 from the server 40 via the network 100, the terminal 30 determines the position of the beacon 10 based on the identification information. The extracted information is displayed on the display unit 34 with the position information of the beacon 10 and the inclination of the utility pole 50 based on the inclination information. Thus, a user or the like who monitors the telephone pole carrying the terminal 30 can recognize that the telephone pole 50 on which the beacon 10 is installed is inclined by a predetermined value or more. It is assumed that the storage unit 33 of the terminal 30 stores in advance the identification information of the beacon 10 and the position information indicating the position where the beacon 10 is installed in association with each other. The position where the beacon 10 is installed is the same as the position of the telephone pole 50 where the beacon 10 is installed. The display unit 34 of the terminal 30 may display the identification information of the beacon 10 instead of the position information of the beacon 10.

"Time synchronization"
FIG. 10 is a diagram illustrating an example of an operation sequence at the time of time synchronization of a beacon in a beacon mesh. In particular, when the beacon 10 in the beacon mesh is driven by a battery, it is required to reduce the amount of power consumption per hour used by the beacon 10 by shortening the operation time of the beacon 10. By reducing the amount of power consumption per hour, the frequency of battery replacement can be reduced. However, unless the time zone in which the beacon 10 operates is set within the beacon mesh, it becomes difficult to transmit and receive signals. Therefore, it is required to perform time synchronization in the beacon mesh. Here, a description will be given of synchronizing the time of the beacon 10 in the beacon mesh with a signal from the control device 20.

In SQ1001, the control device 20 sends a signal (time synchronization command, time synchronization signal) including a time synchronization instruction (command, command) to all the beacons 10 in the beacon mesh to the beacon 10 of the beacon mesh. To send. The signal is, for example, an advertisement signal (broadcast signal). Further, the signal transmitted from the control device 20 may be a predetermined data signal of about 10 bytes used in mesh communication by Bluetooth. The signal used in the mesh communication may be smaller than the advertising signal. The signal includes information indicating a time synchronization instruction. A signal from the control device 20 may be received by a plurality of beacons 10. Here, it is assumed that the signal from control device 20 has been received by beacon 10E. The control device 20 may transmit the signal as a wireless beacon beacon. The time synchronization instruction may include an instruction other than the time synchronization. Control device 20 may transmit a signal including a time synchronization instruction based on a predetermined schedule. The signal may include identification information for identifying the current signal.

  The beacon 10E receiving the signal from the control device 20 confirms the content of the signal. Here, the beacon 10E recognizes that it is a time synchronization signal based on information included in the received signal. The beacon 10E stores information included in the received signal in the storage unit 12.

  In SQ1002, the beacon 10E transmits a signal from the control device 20 to the surrounding beacons 10 and the like. Also, when the signal from the control device 20 is the same signal as the signal transmitted previously, the beacon 10E does not transmit the signal. Here, it is assumed that the signal is received by the beacon 10D.

  The beacon 10D receiving the signal from the beacon 10E checks the content of the signal. Here, the beacon 10D recognizes that it is a time synchronization signal based on information included in the received signal. The beacon 10D stores information included in the received signal in the storage unit 12.

  Further, the beacon 10D transmits a signal from the beacon 10E to surrounding beacons 10 and the like, similarly to the beacon 10E. In addition, when the signal from the control device 20 is the same signal as the previously transmitted signal, the beacon 10D does not transmit the signal.

  In SQ1003, the beacon 10 (the beacon 10D, the beacon 10E, etc.) that has received the time synchronization signal sets the time of a clock incorporated therein to a predetermined reference time (for example, time 0). Here, since the time synchronization signal is sequentially transferred in the beacon mesh, a time lag occurs in the timing at which each beacon 10 receives the time synchronization signal. However, in the time scale handled here, in each beacon 10, It can be considered that the time synchronization signal is received almost at the same time. The clock built in the beacon 10 counts the time.

In SQ1004, the beacon 10 puts itself into sleep for a predetermined time, assuming that a sleep period has been entered. While the beacon 10 is sleeping, the beacon 10 stops transmitting and receiving signals. Thereby, power consumption in the beacon 10 can be suppressed.

  In SQ1005, the beacon 10 transmits and receives a signal for a predetermined time after a predetermined time has elapsed since the beacon 10 went to sleep in SQ1004, assuming that a transmission / reception period has entered. Thus, signals can be transmitted and received in the same time zone as the other beacons 10.

  Thereafter, in each beacon 10, the processing of SQ1004 and SQ1005 is repeated. This processing is stopped when the next time synchronization signal is received. The length of time during which the beacon 10 sleeps and the length of time for transmission and reception may be determined in advance or may be specified in a time synchronization signal. For example, by transmitting the time synchronization signal from the control device 20 periodically, it is possible to eliminate a time lag due to an individual difference in a clock built in the beacon 10. In addition, by transmitting the time synchronization signal from the control device 20 periodically, even when a new beacon 10 is added to the beacon mesh, time synchronization can be performed. In addition, the beacon 10 in the neighboring mesh beacon that has recognized the addition of the new beacon 10 may transmit a signal including the elapsed time from the reference time to the new beacon 10 to perform time synchronization. Further, there is a possibility that the time of the clock of the beacon 10 that transmitted a signal including the elapsed time from the reference time to the new beacon 10 is incorrect. If an incorrect time is set in the clock of the beacon 10, the signal from another beacon 10 or the control device 20 may not be able to be received. Therefore, when the beacon 10 does not receive a signal (a time synchronization signal or the like) from the control device 20 for a predetermined period, the beacon 10 determines that the time of the clock is wrong, and receives the signal from the control device 20. The reception state may be maintained without sleeping until the operation is performed. Thus, even if the time of the clock of the beacon 10 is shifted, the time can be adjusted to the correct time.

  Thereby, the time of the clock of the beacon 10 in the beacon mesh can be easily synchronized. By synchronizing the time of the clocks, the transmission and reception time zones of the beacon 10 in the beacon mesh can be matched, and the power consumption of the beacon 10 can be reduced.

(Operation and effect of the embodiment)
The beacon 10 installed on the electric pole 50 in the beacon mesh of the present embodiment detects the inclination of the electric pole 50 from the sensor unit 13 and transmits the information to the control device 20 as inclination information of the electric pole 50 (beacon 10). The beacon 10 can transmit the tilt information by using a packet of the mesh communication in the beacon mesh.

The control device 20 collects the inclination information of the beacon 10 installed on the telephone pole 50. The control device 20 transmits the inclination information of the beacon 10 (the electric pole 50) to the server 40. The server 40 transmits to the terminal 30 the inclination information of the telephone pole 50 inclined at a predetermined value or more. The terminal 30 displays the received inclination information of the telephone pole 50. The user of the terminal 30 (such as a utility pole monitoring operator) can recognize from the inclination information displayed on the terminal 30 that the specific utility pole 50 is inclined by a predetermined value or more. The user of the terminal 30 can perform work such as replacement of the utility pole on the inclined utility pole 50, and can prevent collapse of the utility pole. Conventionally, a worker who monitors a telephone pole goes to a position where each telephone pole to be monitored is installed and checks whether or not each telephone pole is inclined. However, in the system of the present embodiment, the position where each telephone pole is installed is You can monitor the inclination of each utility pole without going to. By using the beacon mesh, the control device 20 can acquire the inclination information from the beacon 10 installed on the telephone pole 50 where the control device 20 (gateway) does not exist in the radio wave reach. In addition, by using the beacon mesh, even if the distance between the control device 20 and the utility pole 50 is large, communication with the control device 20 can be performed via the beacon 10 of another utility pole. Further, even when a new electric pole 50 including the beacon 10 is installed, the beacon 10 installed on the other electric pole 50 exists within the radio wave range of the beacon 10 installed on the new electric pole 50, and thus a new electric pole 50 is installed. Monitoring of the inclination of the utility pole 50 can be started. In addition, since the beacon 10 only needs to be able to communicate with the adjacent beacon 10 existing within the radio wave reach, power consumption (mainly, radio wave transmission power) in the beacon 10 can be suppressed.

  The present invention is not limited to the above-described embodiment, and can be changed or combined without departing from the spirit of the present invention.

<Computer readable recording medium>
A program that causes a computer or other machine or device (hereinafter, a computer or the like) to realize any of the above functions can be recorded on a recording medium readable by a computer or the like. Then, the function can be provided by causing a computer or the like to read and execute the program on the recording medium.

  Here, a computer-readable recording medium is a recording medium that stores information such as data and programs by electrical, magnetic, optical, mechanical, or chemical action and can be read from a computer or the like. Say. Elements such as a CPU and a memory that constitute a computer may be provided in such a recording medium, and the CPU may execute a program.

  Examples of such a recording medium that can be removed from a computer or the like include a flexible disk, a magneto-optical disk, a CD-ROM, a CD-R / W, a DVD, a DAT, an 8 mm tape, a memory card, and the like.

  Further, a recording medium fixed to a computer or the like includes a hard disk and a ROM.

Reference Signs List 10 beacon 11 communication unit 12 storage unit 13 sensor unit 20 control device 21 beacon communication unit 22 communication unit 23 storage unit 24 air conditioning control unit 30 terminal 31 sign information transmission unit 32 mutual communication unit 33 storage unit 34 display unit 35 position detection unit 40 Server 41 Communication unit 42 Operation unit 43 Storage unit 100 Network

Claims (4)

A plurality of beacons installed on each of a plurality of telephone poles installed in a predetermined space, capable of communicating with each other within a predetermined radio wave reach, transmitting and receiving a predetermined signal, and each of the plurality of beacons is A utility pole monitoring system comprising: a plurality of beacons disposed within the radio range of at least one other beacon; and a control device communicable with at least one beacon of the plurality of beacons,
The beacon is:
A sensor unit for detecting the inclination of the telephone pole on which the beacon is installed,
A first communication unit that transmits a signal including inclination information including the inclination of the telephone pole detected by the sensor unit and identification information for identifying the beacon installed on the telephone pole,
The control device includes:
A second communication unit that receives a signal including the tilt information and the identification information from the beacon,
A computing unit that determines whether the inclination of the utility pole included in the inclination information is equal to or greater than a predetermined value,
The second communication unit, when the inclination of the telephone pole is a predetermined value or more, the inclination information including the inclination of the telephone pole, and a signal including identification information for identifying the beacon installed on the telephone pole. , Send to a given terminal,
Telephone pole monitoring system. A plurality of beacons installed on each of a plurality of telephone poles installed in a predetermined space, capable of communicating with each other within a predetermined radio wave reach, transmitting and receiving a predetermined signal, and each of the plurality of beacons is A plurality of beacons arranged within the radio wave range of at least one other beacon, a control device capable of communicating with at least one beacon of the plurality of beacons, and a server capable of communicating with the control device And a utility pole monitoring system comprising:
The beacon is:
A sensor unit for detecting the inclination of the telephone pole on which the beacon is installed,
A first communication unit that transmits a signal including inclination information including the inclination of the telephone pole detected by the sensor unit and identification information for identifying the beacon installed on the telephone pole,
The control device includes:
A second communication unit that receives a signal including the tilt information and the identification information from the beacon and transmits the signal to a server,
The server is
A third communication unit that receives a signal including the tilt information and the identification information from the control device;
A computing unit that determines whether the inclination of the utility pole included in the inclination information is equal to or greater than a predetermined value,
The third communication unit, when the inclination of the telephone pole is equal to or more than a predetermined value, a signal including the inclination information including the inclination of the telephone pole and identification information for identifying the beacon installed on the telephone pole. , Send to a given terminal,
Telephone pole monitoring system. A plurality of beacons installed on each of a plurality of telephone poles installed in a predetermined space, capable of communicating with each other within a predetermined radio wave reach, transmitting and receiving a predetermined signal, and each of the plurality of beacons is A utility pole monitoring method in a utility pole monitoring system, comprising: a plurality of beacons arranged within the radio wave range of at least one other beacon; and a control device capable of communicating with at least one beacon of the plurality of beacons. And
The beacon is
Detect the inclination of the telephone pole where the beacon is installed,
Transmitting a signal including inclination information including the detected inclination of the telephone pole and identification information for identifying the beacon installed on the telephone pole,
The control device,
Receiving a signal including the tilt information and the identification information from the beacon,
Determine whether the inclination of the utility pole included in the inclination information is a predetermined value or more,
When the inclination of the telephone pole is equal to or greater than a predetermined value, a signal including the inclination information including the inclination of the telephone pole and identification information for identifying the beacon installed on the telephone pole is directed to a predetermined terminal. Send,
Utility monitoring method. A plurality of beacons installed on each of a plurality of telephone poles installed in a predetermined space, capable of communicating with each other within a predetermined radio wave reach, transmitting and receiving a predetermined signal, and each of the plurality of beacons is A plurality of beacons arranged within the radio wave range of at least one other beacon, a control device capable of communicating with at least one beacon of the plurality of beacons, and a server capable of communicating with the control device A utility pole monitoring method in a utility pole monitoring system including:
The beacon is
Detect the inclination of the telephone pole where the beacon is installed,
Transmitting a signal including inclination information including the detected inclination of the telephone pole and identification information for identifying the beacon installed on the telephone pole,
The control device,
Receiving a signal including the tilt information and the identification information from the beacon, transmitting the signal to a server,
Said server,
Receiving a signal including the tilt information and the identification information from the control device,
Determine whether the inclination of the utility pole included in the inclination information is a predetermined value or more,
When the inclination of the telephone pole is equal to or greater than a predetermined value, a signal including the inclination information including the inclination of the telephone pole and identification information for identifying the beacon installed on the telephone pole is directed to a predetermined terminal. Send,
Utility monitoring method.

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