WO2020021779A1

WO2020021779A1 - Communication system, host device, collection device, and communication method

Info

Publication number: WO2020021779A1
Application number: PCT/JP2019/015440
Authority: WO
Inventors: 丸山剛史; 小嶋隆夫; 黒岩聡; 岩間成美; 酒井治
Original assignee: 住友電気工業株式会社
Priority date: 2018-07-25
Filing date: 2019-04-09
Publication date: 2020-01-30
Also published as: JPWO2020021779A1; JP7279719B2

Abstract

This communication system is provided with a plurality of monitoring devices that transfer information, collection devices that acquire the information transferred by the monitoring devices, and a host device. The host device holds list information about first terminal identifiers used in a lower-order layer in communication between the host device and the collection devices, and list information about second terminal identifiers used in a lower-order layer in communication between the collection devices and the monitoring devices. Different second terminal identifiers are fixedly assigned to the monitoring devices, the collection devices, and the host device. The monitoring devices, the collection devices, and the host device each transmit/receive packets in which a second terminal identifier is stored as a transmission source address and a transmission destination address.

Description

Communication system, host device, collection device, and communication method

The present invention relates to a communication system, a host device, a collection device, and a communication method.
This application claims priority based on Japanese Patent Application No. 2018-139233 filed on Jul. 25, 2018, and incorporates the entire disclosure thereof.

As an example of a network system, for example, Japanese Patent No. 6046480 (Patent Document 1) discloses the following configuration.

That is, the network system installs a radio station on each of the towers on which the power transmission lines are erected, and connects a master station connectable to an external communication line to at least one of the radio stations to connect these radio stations. Along the tower column, information can be sequentially relayed bidirectionally from the wireless station to the master station or from the master station to the wireless station, and the wireless station can be relayed from one side of the tower row. A first communication memory for storing the transmitted information, and a second communication memory for storing the information transmitted from the other side of the tower array; A transmission tower maintenance information wireless network system that relays the information stored in the communication memory to the other side and relays the information stored in the second communication memory to the one side. An identification number is individually assigned, and the source of the information The radio station transmits the information with the identification number of the radio station attached thereto, and the master station assigns the identification number of the radio station and the tower provided with the radio station. A plurality of transmission lines are connected to the tower, and a plurality of tower numbers corresponding to each transmission line are assigned to the same tower. Then, based on the identification number conversion table, the master station converts the identification number of the wireless station that transmitted the information into a plurality of tower numbers corresponding to each of the transmission lines. The master station communicates with an upper-level host station via an external communication line such as a mobile phone line.

Japanese Patent No. 6046480

(1) A communication system according to an embodiment of the present disclosure is a communication system used in an electric power system, and includes a plurality of monitoring devices that transfer information, a collection device that acquires the information transferred by the monitoring device, and a collection device. A first lower layer that is a lower layer in communication between the upper device and the collection device, and a second lower layer that is a lower layer in communication between the collection device and the monitoring device. Different from the layer, the upper device holds first list information of a first terminal identifier used in the first lower layer and second list information of a second terminal identifier used in the second lower layer. The plurality of monitoring devices, the collection device and the higher-level device, respectively different fixed second terminal identifier is fixedly assigned, The number of the monitoring device, the collection device and the host system, the second terminal identifier to transmit and receive stored packets as the source address and destination address.

(3) The higher-level device of the present disclosure is a higher-level device in a communication system used in a power system, and the communication system acquires a plurality of monitoring devices that transfer information and the information that is transferred by the monitoring device. And a first lower layer that is a lower layer in communication between the higher-level device and the collection device, and a lower-level layer in communication between the higher-level device and the collection device. Different from a second lower layer that is a lower layer in communication, the upper device includes first list information of a first terminal identifier used in the first lower layer and a second list information used in the second lower layer. The second terminal that holds second list information of two terminal identifiers and is different for each of the plurality of monitoring devices, the collection device, and the host device. The upper device is configured to transmit and receive a packet in which the second terminal identifier is stored as a source address and a destination address to and from the plurality of monitoring devices and the collection device. I do.

(4) The collection device of the present disclosure is a collection device in a communication system used for an electric power system, and the communication system acquires a plurality of monitoring devices that transfer information and the information that is transferred by the monitoring device. The collecting device, and a higher-level device communicable with the collecting device, a first lower layer, which is a lower layer in communication between the higher-level device and the collecting device, between the collecting device and the monitoring device Different from a second lower layer that is a lower layer in communication, the collection device includes first list information of a first terminal identifier used in the first lower layer, and a second list information used in the second lower layer. The second terminal that holds second list information of two terminal identifiers and is different for each of the plurality of monitoring devices, the collection device, and the host device. An identifier is fixedly assigned, and the collection device transmits and receives a packet in which the second terminal identifier is stored as a source address and a destination address to and from the plurality of monitoring devices and the higher-level device. I do.

(5) A communication method according to an embodiment of the present disclosure is a communication method in a communication system used in an electric power system, wherein the communication system acquires a plurality of monitoring devices that transfer information and the information that is transferred by the monitoring device. Communication device, and a higher-level device communicable with the collection device, and a first lower layer, which is a lower layer in communication between the higher-level device and the collection device, and communication between the collection device and the monitoring device Is different from a second lower layer that is a lower layer of the first device, the upper device includes first list information of a first terminal identifier used in the first lower layer, and a second list information used in the second lower layer. The second terminal identification information holding second list information of terminal identifiers, wherein the plurality of monitoring devices, the collection device, and the higher-level device are different from each other in the second terminal identification. Wherein the monitoring device, the collection device or the higher-level device transmits a packet in which the second terminal identifier is stored as a source address and a destination address; and Receiving the transmitted packet by the collection device or the higher-level device.

の一 One embodiment of the present disclosure can be realized not only as a communication system including such a characteristic processing unit, but also as a program for causing a computer to execute such characteristic processing. Further, one embodiment of the present disclosure can be realized as a semiconductor integrated circuit that realizes part or all of a communication system.

In addition, one embodiment of the present disclosure can be realized not only as a higher-level device including such a characteristic processing unit, but also as a method having such characteristic processing as a step, or performing such a step on a computer. It can be realized as a program to be executed. Further, one embodiment of the present disclosure can be realized as a semiconductor integrated circuit that realizes part or all of a higher-level device.

In addition, one embodiment of the present disclosure can be realized not only as a collection device including such a characteristic processing unit, but also as a method having such characteristic processing as a step, or performing such a step on a computer. It can be realized as a program to be executed. Further, one embodiment of the present disclosure can be realized as a semiconductor integrated circuit that realizes part or all of the collection device.

FIG. 1 is a diagram showing a configuration of a communication system according to an embodiment of the present invention. FIG. 2 is a diagram illustrating an application example of the communication system according to the embodiment of the present invention. FIG. 3 is a block diagram showing a configuration of the monitoring parent device in the communication system according to the embodiment of the present invention. FIG. 4 is a block diagram showing a configuration of the monitor device in the communication system according to the embodiment of the present invention. FIG. 5 is a diagram showing an example of address assignment in the communication system according to the embodiment of the present invention. FIG. 6 is a diagram illustrating an example of the first list information held by the higher-level device in the communication system according to the embodiment of the present invention. FIG. 7 is a diagram illustrating an example of the second list information held by the higher-level device in the communication system according to the embodiment of the present invention. FIG. 8 is a diagram illustrating an example of the first list information held by the collection device in the communication system according to the embodiment of the present invention. FIG. 9 is a diagram illustrating an example of the first list information held by the collection device in the communication system according to the embodiment of the present invention. FIG. 10 is a diagram illustrating an example of the second list information held by the collection device in the communication system according to the embodiment of the present invention. FIG. 11 is a diagram showing an example of the second list information held by the collection device in the communication system according to the embodiment of the present invention. FIG. 12 is a diagram illustrating an example of a main part of a packet in the communication system according to the embodiment of the present invention. FIG. 13 is a diagram illustrating an example of a packet used between a higher-level device and a collection device in the communication system according to the embodiment of the present invention. FIG. 14 is a diagram illustrating an example of a packet used between the collection device and the wireless master device in the communication system according to the embodiment of the present invention. FIG. 15 is a diagram illustrating an example of a packet used between monitoring apparatuses in the communication system according to the embodiment of the present invention. FIG. 16 is a diagram showing an example of an information transmission sequence in the communication system according to the embodiment of the present invention.

[Problems to be solved by the present disclosure]
In the network system described in Patent Literature 1, communication using a specific low-power radio in, for example, a 2.4 GHz band is performed between wireless stations, and between the wireless station and the master station, while the mobile station is mobile between the master station and the upper host station. Communication via a telephone line or the like is performed.

Therefore, the communication protocol used between the wireless stations and between the wireless station and the master station is different from the communication protocol used between the master station and the upper host station. When communication is performed between devices having different communication protocols, for example, it is conceivable to provide an address table for converting addresses used in each communication protocol in each of the host station and the master station.

However, in such a configuration, in addition to the necessity of the address conversion processing, when updating the address tables for maintenance purposes or the like, if the update is not consistent between the address tables, communication problems may occur. This may occur.

The present disclosure has been made in order to solve the above-described problem, and an object of the present disclosure is to provide a communication system, a higher-level device, a collection device, and a communication method that can realize more stable operation in a power system. That is.

[Effects of the present disclosure]
According to the present disclosure, more stable operation can be realized in a power system.

[Description of Embodiment of the Present Invention]
First, the contents of the embodiment of the present invention will be listed and described.

(1) A communication system according to an embodiment of the present invention is a communication system used in an electric power system, and includes a plurality of monitoring devices that transfer information, and a collection device that acquires the information transferred by the monitoring device. And a higher-level device capable of communicating with the collection device. A first lower-level layer, which is a lower-level layer in communication between the higher-level device and the collection device, and a lower-level layer in communication between the collection device and the monitoring device. Different from a certain second lower layer, the higher-level device includes first list information of a first terminal identifier used in the first lower layer, and second list information of a second terminal identifier used in the second lower layer. 2 holding the list information, and the different second terminal identifiers are fixedly assigned to the plurality of monitoring devices, the collecting device, and the higher-level device, respectively. Are the plurality of monitoring devices, the collecting device and the host system, the second terminal identifier to transmit and receive stored packets as the source address and destination address.

Thus, the first list information of the first terminal identifier used in the lower layer of the communication between the higher-level device and the collection device, and the second list information of the second terminal identifier used in the lower layer of the communication between the collection device and the monitoring device With the configuration in which the higher-level device holds the list information and the different second terminal identifiers are fixedly assigned to the plurality of monitoring devices, the collecting device, and the higher-level device, the lower layer and the collecting device between the higher-level device and the collecting device The difference in the lower layer between the monitoring devices and the monitoring device can be absorbed by the second terminal identifier. This eliminates the need for an address table for converting addresses used in each communication protocol in the host device and the collection device. Therefore, there is no need to perform the address conversion processing in the higher-level device and the collecting device, and it is not necessary to match the updating of the address table between the higher-level device and the collecting device. Therefore, more stable operation can be realized in the power system.

(2) Preferably, the communication system includes a plurality of sets of the collection device and the plurality of monitoring devices, and a different network identifier is fixedly assigned to each of the sets, and the first list information includes: The correspondence between the network identifier and the first terminal identifier is indicated, the second list information indicates the correspondence between the network identifier and the second terminal identifier, and the packet further stores the network identifier. .

With such a configuration, it is possible to more stably operate a communication system including a plurality of systems each including a collection device and a plurality of monitoring devices, and a higher-level device.

(3) The host device according to the embodiment of the present invention is a host device in a communication system used for an electric power system, and the communication system is provided with a plurality of monitoring devices that transfer information and the monitoring device that transfers the information. A collecting device for acquiring the information, and a higher-order device communicable with the collecting device, a first lower layer being a lower layer in communication between the higher-order device and the collecting device, and the collecting device; Different from a second lower layer which is a lower layer in communication between the monitoring devices, the higher device includes first list information of a first terminal identifier used in the first lower layer, and the second lower layer. The second list information of the second terminal identifier used in the layer is retained, and each of the plurality of monitoring devices, the collection device, and the higher-level device is different. The upper-level device is configured to assign a packet in which the second terminal identifier is stored as a source address and a destination address to the plurality of monitoring devices and the collection device. Send and receive between

(4) A collection device according to an embodiment of the present invention is a collection device in a communication system used in an electric power system, wherein the communication system is configured to include a plurality of monitoring devices that transfer information, and a plurality of monitoring devices that transfer information. The collecting device for acquiring the information, and a higher-level device capable of communicating with the collecting device, a first lower layer being a lower layer in communication between the higher-level device and the collecting device, the collecting device, and Different from a second lower layer which is a lower layer in the communication between the monitoring devices, the collecting device is configured to include first list information of a first terminal identifier used in the first lower layer, and the second lower layer. The second list information of the second terminal identifier used in the layer is retained, and each of the plurality of monitoring devices, the collection device, and the higher-level device is different. The second terminal identifier is fixedly assigned, and the collection device transmits a packet in which the second terminal identifier is stored as a source address and a destination address to the plurality of monitoring devices and the higher-level device. Send and receive between

Thus, the first list information of the first terminal identifier used in the lower layer of the communication between the higher-level device and the collection device, and the second list information of the second terminal identifier used in the lower layer of the communication between the collection device and the monitoring device With the configuration in which the collection device holds the list information and the different second terminal identifiers are fixedly assigned to the plurality of monitoring devices, the collection device, and the higher device, respectively, the lower layer and the collection device between the higher device and the collection device The difference in the lower layer between the monitoring devices and the monitoring device can be absorbed by the second terminal identifier. This eliminates the need for an address table for converting addresses used in each communication protocol in the host device and the collection device. Therefore, there is no need to perform the address conversion processing in the higher-level device and the collecting device, and it is not necessary to match the updating of the address table between the higher-level device and the collecting device. Therefore, more stable operation can be realized in the power system.

(5) A communication method according to an embodiment of the present invention is a communication method in a communication system used for an electric power system, wherein the communication system includes a plurality of monitoring devices that transfer information, and a plurality of monitoring devices that transfer information. A collecting device for acquiring the information, and a higher-level device communicable with the collecting device, a first lower layer being a lower layer in communication between the higher-level device and the collecting device, the collecting device, and Different from a second lower layer which is a lower layer in communication between monitoring devices, the upper device includes first list information of a first terminal identifier used in the first lower layer, and the second lower layer Holds second list information of a second terminal identifier used in the plurality of monitoring devices, the collection device, and the higher-level device. The second terminal identifier is fixedly assigned, and the monitoring device, the collection device, or the higher-level device transmits a packet in which the second terminal identifier is stored as a source address and a destination address. Receiving the transmitted packet by the monitoring device, the collection device, or the higher-level device.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding portions have the same reference characters allotted, and description thereof will not be repeated. Further, at least some of the embodiments described below may be arbitrarily combined.

[Configuration and basic operation]
FIG. 1 is a diagram showing a configuration of a communication system according to an embodiment of the present invention.

参照 Referring to FIG. 1, communication system 301 is a communication system used for an electric power system. Specifically, the communication system 301 is, for example, a communication system attached to a power transmission facility installed between a power plant and a customer of power, and detects, for example, a lightning strike position on the power transmission facility, It is used for temperature monitoring and maintenance of power transmission facilities.

The communication system 301 includes one or a plurality of monitoring systems T and a host device 181. The monitoring system T includes a collection device 151 and one or more monitoring devices 101. In the example illustrated in FIG. 1, the communication system 301 includes two monitoring systems T1 and T2 as the monitoring system T.

The monitoring device 101 has a function of transferring information. In this specification, “transfer” includes, for example, relaying information to a relay destination and transmitting information to a relay destination as a source of information.

Specifically, the monitoring apparatus 101 transmits, for example, information received by itself to another monitoring apparatus 101 different from the other monitoring apparatus 101 as “transfer”. Is transmitted to the other monitoring apparatus 101.

The monitoring device 101 is a device having a wireless communication function. The monitoring apparatus 101 performs specific low-power wireless communication using a communication band of, for example, a 920 MHz band.

The types of the monitoring device 101 include a monitoring parent device 102 having a function as a parent device and a monitoring child device 103 having a function as a child device and performing wireless communication with the monitoring parent device 102. The monitoring parent device 102 and the plurality of monitoring child devices 103 perform multi-hop communication.

(4) When a plurality of monitoring devices 101 are provided, the plurality of monitoring devices 101 transmit information serially via a wireless transmission path, that is, are connected in series via a wireless transmission path. That is, in the communication system 301, a plurality of monitoring apparatuses 101 does not constitute a transmission path arranged in parallel or in a mesh, but a wireless transmission path in which the plurality of monitoring apparatuses 101 are arranged in series. In this case, the monitoring system T includes one monitoring parent device 102 and one or a plurality of monitoring child devices 103.

The higher-level device 181 is a device that can communicate with the collection device 151. The host device 181 can communicate with the collection device 151 via, for example, a mobile phone line.

The collection device 151 receives the information transmitted from the monitoring parent device 102 and transfers the received information to the higher-level device 181. Further, the collection device 151 receives the information transmitted from the higher-level device 181 and transfers the received information to the monitoring parent device 102.

Hereinafter, the monitor device 103 side as viewed from the host device 181 may be referred to as “downstream side”, and the host device 181 side as viewed from the monitor device 103 may be referred to as “upstream side”. Further, the direction from the host device 181 to the monitor device 103 may be referred to as “downward direction”, and the direction from the monitor device 103 to the host device 181 may be referred to as “upward direction”.

The number of monitoring devices 101 included in the monitoring system T is not particularly limited, and is, for example, 50 or more.

The monitoring parent device 102 acquires the measurement information indicating the measurement result of the sensor in itself, and transfers the acquired measurement information to the collection device 151.

(4) The monitoring parent device 102 acquires the measurement information from the monitoring child device 103, and transfers the acquired measurement information to the collection device 151. Further, the monitoring parent device 102 receives setting information and the like from the collection device 151 and transfers the received setting information and the like to the monitoring child device 103.

The monitor device 103 acquires the measurement information indicating the measurement information of the sensor in itself, and transfers the acquired measurement information to another monitor device 103 or the parent device 102 on the upstream side.

{Circle around (2)} The monitor device 103 acquires the measurement information from the other monitor device 103 on the downstream side and transfers the acquired measurement information to the other monitor device 103 or the parent device 102 on the upstream side. Further, the monitor device 103 receives setting information and the like from the other monitor device 103 or the parent device 102 on the upstream side, and transfers the received setting information and the like to the other monitor device 103 on the downstream side.

When the received information is addressed to itself, the collection device 151 and the monitoring device 101 process without transferring the information.

FIG. 2 is a diagram showing an application example of the communication system according to the embodiment of the present invention.

参照 Referring to FIG. 2, a plurality of monitoring devices 101 are installed at different positions in the power system, for example, at a plurality of positions where information necessary for maintenance of the power system can be detected. Specifically, for example, a plurality of monitoring devices 101 are respectively installed in a plurality of steel towers 2 provided in an electric power system. The overhead ground wire 3 and the transmission line 4 are installed between the adjacent steel towers 2.

The monitoring device 101 may be installed in all the towers 2 in the section to be monitored, or may be installed in some of the towers 2 in the section to be monitored.

Specifically, the monitoring devices 101 may be installed in, for example, every other, every two, or every third of the plurality of steel towers 2 arranged side by side. In the example shown in FIG. 2, every other monitoring device 101 is installed. Whether to install the monitoring device 101 on all the towers 2 or on some of the towers 2 is determined based on, for example, the installation intervals of the towers 2 and the like.

The monitoring device 101 is not limited to the tower 2 and may be installed around the tower 2, or may be installed on the power transmission line 4, the overhead ground wire 3 or the ground, for example.

FIG. 3 is a block diagram showing a configuration of the monitoring parent device in the communication system according to the embodiment of the present invention.

監視 Referring to FIG. 3, monitoring parent device 102 includes communication unit 104, battery 106, control unit 107, storage unit 108, and sensor 111.

The communication unit 104 transmits, to the collection device 151, measurement information indicating the amount of charge measured by the sensor 111 of its own monitoring parent device 102. The communication unit 104 and the collection device 151 are, for example, connected by wire, and perform serial communication with each other.

(4) The battery 106 supplies power to the control unit 107, the sensor 111, the communication unit 104, the storage unit 108, and the like.

The control unit 107 controls operations of the sensor 111, the communication unit 104, and the like. Specifically, for example, the control unit 107 periodically performs control to turn on the communication unit 104 and turn off the communication unit 104 after a predetermined time has elapsed.

The sensor 111 measures the charge amount of the overhead ground wire 3 as an example. The detection target of the sensor 111 is not particularly limited.

Further, upon receiving predetermined information indicating an area in which a lightning is expected, a period in which a lightning is expected, and the like from the host device 181 via the communication unit 104 and the collection device 151, the control unit 107 controls, for example, a switch (not shown). As a result, control is performed to start the power supply from the battery 106 to the sensor 111 and to change the sensor 111 from the off state to the on state.

The control unit 107 receives the measurement information indicating the amount of charge measured by the sensor 111 and outputs the received measurement information to the communication unit 104. Then, for example, when a predetermined time elapses after the sensor 111 is turned on, the control unit 107 stops power supply from the battery 106 to the sensor 111 by controlling a switch (not shown), for example. Control is performed to make a transition from the on state to the off state.

The storage unit 108 stores a short address and the like, which will be described later, assigned to its own monitoring parent device 102.

(1) Referring again to FIG. 1, the collection device 151 transmits the measurement information received from the monitoring parent device 102 to the higher-level device 181.

The higher-level device 181 receives the measurement information from the collection device 151 and performs various calculations based on the received measurement information. For example, the higher-level device 181 receives measurement information indicating the amount of charge from the plurality of monitoring devices 101 via the collection device 151, and distributes the amount of charge between the plurality of steel towers 2 based on the amount of charge indicated by the received measurement information. Is calculated, and the lightning strike position is estimated based on the calculated distribution of the charge amount.

FIG. 4 is a block diagram showing a configuration of a monitor device in the communication system according to the embodiment of the present invention.

Referring to FIG. 4, monitor device 103 includes communication unit 105, battery 106, control unit 107, storage unit 108, and sensor 111.

The communication unit 105 transmits measurement information indicating the amount of charge measured by the sensor 111 of its own monitor device 103 to the other monitor device 103 or the parent device 102 on the upstream side. When receiving the measurement information indicating the charge amount from the monitor device 103 located on the downstream side, the communication unit 105 transfers the received measurement information to the other monitor device 103 or the parent device 102 on the upstream side. .

FIG. 5 is a diagram showing an example of address assignment in the communication system according to the embodiment of the present invention. Hereinafter, a case will be described in which the communication system 301 includes the monitor device 103_1 and the monitor device 103_2 that are the monitor devices 103. The monitor device 103_1 and the monitor device 103_2 are installed in this order from the upstream side.

Referring to FIG. 5, in communication system 301, a first lower layer that is a lower layer in communication between upper device 181 and collection device 151, and a first lower layer that is a lower layer in communication between collection device 151 and monitoring device 101. 2 lower layers.

Specifically, communication using, for example, a mobile phone line is performed between the higher-level device 181 and the collection device 151. A communication protocol for a mobile phone line, for example, IP is used as a first lower layer communication protocol between the higher-level device 181 and the collection device 151.

On the other hand, for example, serial communication is performed between the collection device 151 and the monitoring parent device 102. A communication protocol for serial communication is used as the second lower layer communication protocol between the collection device 151 and the monitoring parent device 102.

特定 Further, between the monitoring parent device 102 and the monitoring child device 103 and between the monitoring child devices 103, for example, specific low-power wireless communication using a 920 MHz communication band in accordance with the communication standard of IEEE 802.15.4 is performed. The communication protocol for the specified low-power wireless communication is used as a second lower layer communication protocol between the monitoring parent device 102 and the monitoring child device 103 and between the monitoring child devices 103.

(4) The upper device 181 stores a first terminal identifier used in the first lower layer, for example, first list information of an IP address in a storage unit (not shown).

FIG. 6 is a diagram showing an example of the first list information held by the higher-level device in the communication system according to the embodiment of the present invention.

6, first list information TL <b> 1 indicates a correspondence relationship among PAN_ID, IP address of higher-level device 181, and IP address of collection device 151 for each monitoring system T managed by higher-level device 181.

The upper device 181 stores a second terminal identifier used in the second lower layer, for example, second list information of a short address in a storage unit (not shown).

FIG. 7 is a diagram showing an example of the second list information held by the higher-level device in the communication system according to the embodiment of the present invention.

Referring to FIG. 7, the second list information TL2 includes a monitoring system number, a PAN_ID, a short address of the upper device 181 and a short address of the collection device 151 for each monitoring system T managed by the higher device 181. The correspondence between the short address and the tower number of the monitoring parent device 102, the short address and the tower number of the monitor device 103_1, and the short address and the tower number of the monitor device 103_2 are shown.

The monitoring system number and tower number indicate the installation location of the tower. Thus, for example, by inputting a monitoring system number and a tower number to the upper apparatus 181, the user can designate the monitoring apparatus 101 or the like in a desired tower for the upper apparatus 181 and acquire various information. it can.

The collection device 151 stores a first terminal identifier used in the first lower layer, for example, first list information of an IP address in a storage unit (not shown).

Specifically, for example, the first list information is list information of IP addresses given to the higher-level device 181 and the collection device 151.

FIG. 8 is a diagram showing an example of the first list information held by the collection device in the communication system according to the embodiment of the present invention. FIG. 8 shows an example of the first list information held by the collection device 151 belonging to the monitoring system T1.

Referring to FIG. 8, first list information SL1 indicates a correspondence relationship between PAN_ID of monitoring system T1, an IP address of higher-level device 181, and an IP address of collection device 151.

FIG. 9 is a diagram showing an example of the first list information held by the collection device in the communication system according to the embodiment of the present invention. FIG. 9 shows an example of the first list information held by the collection device 151 belonging to the monitoring system T2.

Referring to FIG. 9, the first list information SL1 indicates the correspondence between the PAN_ID of the monitoring system T2, the IP address of the higher-level device 181, and the IP address of the collection device 151.

The collection device 151 stores a second terminal identifier used in the second lower layer, for example, second list information of a short address in a storage unit (not shown).

{Specifically, for example, the second list information is list information of short addresses given to the higher-level device 181, the collection device 151, the monitoring parent device 102, and the monitoring child device 103.

FIG. 10 is a diagram showing an example of the second list information held by the collection device in the communication system according to the embodiment of the present invention. FIG. 10 illustrates an example of the second list information held by the collection device 151 belonging to the monitoring system T1.

Referring to FIG. 10, second list information SL2 includes a monitoring system number, a PAN_ID, a short address of higher-level device 181, a short address of collection device 151, and a short address of monitoring parent device 102 of monitoring system T1. It shows a correspondence relationship between the short address and the tower number, the short address and the tower number of the monitor device 103_1, and the short address and the tower number of the monitor device 103_2.

FIG. 11 is a diagram showing an example of the second list information held by the collection device in the communication system according to the embodiment of the present invention. FIG. 11 illustrates an example of the second list information held by the collection device 151 belonging to the monitoring system T2.

Referring to FIG. 11, second list information SL2 includes a monitoring system number, a PAN_ID, a short address of higher-level device 181, a short address of collection device 151, and a short address of monitoring parent device 102 of monitoring system T2. It shows a correspondence relationship between the short address and the tower number, the short address and the tower number of the monitor device 103_1, and the short address and the tower number of the monitor device 103_2.

As described above, in the communication system 301, different first terminal identifiers, for example, IP addresses are fixedly assigned to the collection device 151 and the higher-level device 181, respectively.

{Circle around (2)} Different second terminal identifiers, for example, short addresses are fixedly assigned to the collection device 151, the monitoring parent device 102, the monitoring child device 103, and the higher-level device 181, respectively.

{Circle around (1)}, different network identifiers, for example, PAN_ID (Personal Area Network Identification) are fixedly assigned to the monitoring systems T1 and T2.

In the communication system 301, the monitoring parent device 102, the plurality of monitoring child devices 103, the collection device 151, and the higher-level device 181 are configured to use a second terminal identifier as a source address and a destination address, for example, a source short address and a destination short address. Transmit and receive the stored packets.

FIG. 12 is a diagram showing an example of a main part of a packet in the communication system according to the embodiment of the present invention.

Referring to FIG. 12, a packet transmitted between higher-level device 181 and collection device 151 includes a TCP / IP header, a routing header, an application header, and an application payload. The TCP / IP header and the routing header are used for lower layer communication, and the application header and application payload are used for upper layer communication. Note that the packet may include data other than the contents shown in FIG.

(4) The host device 181 can recognize the contents of the application header and the application payload. On the other hand, the collection device 151 cannot recognize the contents of the application header and the application payload.

The packet transmitted between the collection device 151 and the monitoring parent device 102 includes a serial header, a routing header, an application header, and an application payload. The serial header and the routing header are used for lower layer communication, and the application header and application payload are used for upper layer communication.

(4) The collection device 151 and the monitoring parent device 102 can recognize the contents of the serial header and the routing header, but cannot recognize the contents of the application header and the application payload.

The packet transmitted between the monitoring parent device 102 and the monitoring child device 103 includes a radio header, a routing header, an application header, and an application payload. The radio header and the routing header are used for lower layer communication, and the application header and application payload are used for upper layer communication.

The monitoring parent device 102 and the monitoring child device 103 can recognize the contents of the radio header and the routing header, but cannot recognize the contents of the application header and the application payload.

The packet transmitted between the monitor devices 103 includes a radio header, a routing header, an application header, and an application payload. The radio header and the routing header correspond to the lower layer, and the application header and the application payload correspond to the upper layer.

(4) The monitor device 103 can recognize the contents of the radio header and the routing header, but cannot recognize the contents of the application header and the application payload.

FIG. 13 is a diagram illustrating an example of a packet used between the higher-level device and the collection device in the communication system according to the embodiment of the present invention. FIG. 13 shows the format of an IP packet.

Referring to FIG. 13, the IP packet includes a TCP / IP header and a routing packet stored in the payload.

$ The TCP / IP header includes, for example, a "destination IP address" and a "source IP address".

The routing packet includes, for example, a routing header and an application packet stored in the payload.

The routing header includes, for example, “destination PAN_ID”, “source PAN_ID”, “destination short address”, and “source short address”.

The application packet includes, for example, an application header and an application payload.

The application payload contains target information such as measurement information. The target information includes, for example, information used for maintenance of a power system such as a power transmission facility. Specifically, when the monitoring device 101 is installed on the steel tower 2, the target information includes, for example, measurement information indicating the amount of electric charge used for detecting the position of the lightning strike on the power transmission equipment, and the temperature used for monitoring the temperature of the transmission line 4. , Measurement information indicating the inclination of the tower 2, or measurement information indicating the depth of snow on the ground.

When the monitoring device 101 is installed on the power transmission line 4, the target information includes, for example, measurement information indicating the amount of electric charge used for detecting the position of the lightning strike on the power transmission equipment, and the temperature used for monitoring the temperature of the power transmission line 4. Measurement information, or measurement information indicating the inclination of the transmission line 4 due to slack or the like.

When the monitoring device 101 is installed on the overhead ground wire 3, the target information is, for example, measurement information indicating the amount of charge used to detect the position of the lightning strike on the power transmission equipment, and is used for monitoring the temperature of the overhead ground wire 3. It includes measurement information indicating the temperature, measurement information indicating the inclination of the overhead ground wire 3 due to slack, and the like.

When the monitoring device 101 is installed on the ground around the steel tower 2, the target information is, for example, measurement information indicating the inclination of the ground, measurement information indicating the vibration of the ground, or indicating the depth of snow on the ground. Includes measurement information and the like.

The detection target of the sensor 111 and the type of the sensor 111 in the monitoring device 101 are appropriately set according to the type of the target information.

FIG. 14 is a diagram showing an example of a packet used between the collection device and the wireless master device in the communication system according to the embodiment of the present invention. FIG. 14 shows a format of a serial packet transmitted by serial communication.

Referring to FIG. 14, the serial packet includes a serial header and a routing packet stored in the payload.

The serial header is a header used for serial communication. The routing packet has the same contents as the routing packet shown in FIG.

FIG. 15 is a diagram showing an example of a packet used between monitoring apparatuses in the communication system according to the embodiment of the present invention. FIG. 15 shows a format of a wireless packet transmitted by 920 MHz specific low-power wireless communication.

参照 Referring to FIG. 15, the wireless packet includes a wireless header and a routing packet stored in the payload.

The wireless header is a header used for specific low-power wireless communication. The routing packet has the same contents as the routing packet shown in FIG.

[Flow of operation]
Each device in the communication system 301 includes a computer including a memory, and an arithmetic processing unit such as a CPU in the computer reads a program including a part or all of each step of the following sequence diagram or flowchart from the memory, respectively. Execute. Each of the programs of the plurality of devices can be externally installed. The programs of the plurality of devices are distributed while being stored in a recording medium.

FIG. 16 is a diagram showing an example of an information transmission sequence in the communication system according to the embodiment of the present invention.

FIG. 16 shows eight transmission examples 1 to 8 of a packet in the host device 181 and the monitoring system T1, that is, between the host device 181, the collection device 151, the monitoring parent device 102, and the two monitoring child devices 103_1 and 103_2. The example which is performed in order is shown.

In the transmission example 1 for transmitting information in the downstream direction, the higher-level device 181 transmits an IP packet including the setting information of the collection device 151 to the collection device 151.

This IP packet includes “0x0001” as the destination PAN_ID, “192.168.1.3” as the destination IP address, “192.168.1.2” as the source IP address, and "0xFFFD" is included as the destination short address, and "0xFFFE" is included as the source short address. This IP packet does not include the source PAN_ID.

Next, the collection device 151 receives and processes the IP packet from the higher-level device 181.

In transmission example 2 for transmitting information in the upstream direction, the collection device 151 transmits an IP packet including measurement information and the like to the higher-level device 181.

This IP packet includes “0x0001” as the source PAN_ID, “192.168.1.2” as the destination IP address, “192.168.1.3” as the source IP address, and “0xFFFE” is included as the destination short address, and “0xFFFD” is included as the source short address. This IP packet does not include the destination PAN_ID.

Next, the higher-level device 181 receives and processes the IP packet from the collection device 151.

In the transmission example 3 for transmitting information in the downstream direction, the higher-level device 181 transmits an IP packet including setting information of the monitoring parent device 102 to the collection device 151.

This IP packet includes “0x0001” as the destination PAN_ID, “192.168.1.3” as the destination IP address, “192.168.1.2” as the source IP address, and It includes “0x0000” as the destination short address and “0xFFFE” as the source short address. This IP packet does not include the source PAN_ID.

Next, when receiving the IP packet from the higher-level device 181, the collection device 151 deletes the TCP / IP header of the received IP packet, creates a serial packet by adding a serial header, and monitors the created serial packet. Send to parent device 102.

This serial packet includes “0x0001” as the destination PAN_ID, “0x0000” as the destination short address, and “0xFFFE” as the source short address. This serial packet does not include the source PAN_ID.

Next, the monitoring parent device 102 receives and processes the serial packet from the collection device 151.

In the transmission example 4 for transmitting information in the upward direction, the monitoring parent device 102 transmits a serial packet including measurement information and the like to the collection device 151.

This serial packet includes “0x0001” as the source PAN_ID, “0xFFFE” as the destination short address, and “0x0000” as the source short address. This serial packet does not include the destination PAN_ID.

Next, when the collection device 151 receives the serial packet from the monitoring parent device 102, it deletes the serial header of the received serial packet and adds a TCP / IP header to create an IP packet. This is transmitted to the host device 181.

This IP packet includes “0x0001” as the source PAN_ID, “0xFFFE” as the destination short address, and “0x0000” as the source short address. This IP packet does not include the destination PAN_ID.

In transmission example 5 in which information is transmitted in the downstream direction, the higher-level device 181 transmits an IP packet including setting information of the monitor device 103_2 to the collection device 151.

This IP packet includes “0x0001” as the destination PAN_ID, “192.168.1.3” as the destination IP address, “192.168.1.2” as the source IP address, and It includes “0x0002” as the destination short address and “0xFFFE” as the source short address. This IP packet does not include the source PAN_ID.

This serial packet includes “0x0001” as the destination PAN_ID, “0x0002” as the destination short address, and “0xFFFE” as the source short address. This serial packet does not include the source PAN_ID.

Next, upon receiving the serial packet from the collection device 151, the monitoring parent device 102 deletes the serial header of the received serial packet, adds a wireless header to create a wireless packet, and monitors the created wireless packet as a monitor. Transmit to the device 103_1.

The wireless packet includes “0x0001” as the destination PAN_ID, “0x0001” as the destination wireless address, “0x0000” as the source wireless address, “0x0002” as the destination short address, and "0xFFFE" is included as the short address. This wireless packet does not include the source PAN_ID.

Next, upon receiving the wireless packet from the monitoring parent device 102, the monitor child device 103_1 deletes the wireless header of the received wireless packet, and creates and creates a new wireless packet by adding a new wireless header. The wireless packet is transmitted to the monitor device 103_2.

The wireless packet includes “0x0001” as the destination PAN_ID, “0x0002” as the destination wireless address, “0x0001” as the source wireless address, “0x0002” as the destination short address, and "0xFFFE" is included as the short address. This wireless packet does not include the source PAN_ID.

Next, the monitor device 103_2 receives and processes the wireless packet from the monitor device 103_1.

伝送 In transmission example 6 for transmitting information in the uplink direction, monitor device 103_2 transmits a wireless packet including measurement information and the like to monitor device 103_1.

The wireless packet includes “0x0001” as the source PAN_ID, “0x0001” as the destination wireless address, “0x0002” as the source wireless address, “0xFFFE” as the destination short address, and “0x0002” is included as the short address. This wireless packet does not include the destination PAN_ID.

Next, upon receiving the wireless packet from the monitor child device 103_2, the monitor child device 103_1 deletes the wireless header of the received wireless packet, and creates and creates a new wireless packet by adding a new wireless header. The wireless packet is transmitted to the monitoring parent device 102.

The wireless packet includes “0x0001” as the source PAN_ID, “0x0000” as the destination wireless address, “0x0001” as the source wireless address, “0xFFFE” as the destination short address, and “0x0002” is included as the short address. This wireless packet does not include the destination PAN_ID.

Next, when the monitoring parent device 102 receives a wireless packet from the monitoring child device 103_1, the monitoring parent device 102 deletes a wireless header of the received wireless packet, adds a serial header to create a serial packet, and collects the created serial packet. Transmit to the device 151.

This serial packet includes “0x0001” as the source PAN_ID, “0xFFFE” as the destination short address, and “0x0002” as the source short address. This serial packet does not include the destination PAN_ID.

This IP packet includes “0x0001” as the source PAN_ID, “192.168.1.2” as the destination IP address, “192.168.1.3” as the source IP address, and "0xFFFE" is included as the destination short address, and "0x0002" is included as the source short address. This IP packet does not include the destination PAN_ID.

In the transmission example 7 for transmitting information in the downlink direction, the monitoring parent device 102 transmits a wireless packet including information for setting the monitoring child device 103_2 to the monitoring child device 103_1.

This wireless packet includes “0x0001” as the destination PAN_ID, “0x0001” as the source PAN_ID, “0x0001” as the destination wireless address, “0x0000” as the source wireless address, and the destination short-circuit. The address includes “0x0002” and the source short address includes “0x0000”.

The wireless packet includes “0x0001” as the destination PAN_ID, “0x0001” as the source PAN_ID, “0x0002” as the destination wireless address, “0x0001” as the source wireless address, and the destination short-circuit. The address includes “0x0002” and the source short address includes “0x0000”.

In the transmission example 8 in which information is transmitted in the upward direction, the monitor device 103_2 transmits a wireless packet including information such as measurement information to the monitor device 103_1.

This wireless packet includes “0x0001” as the destination PAN_ID, “0x0001” as the source PAN_ID, “0x0001” as the destination wireless address, “0x0002” as the source wireless address, and the destination short-circuit. The address includes “0x0000” and the source short address includes “0x0002”.

This wireless packet includes “0x0001” as the destination PAN_ID, “0x0001” as the source PAN_ID, “0x0000” as the destination wireless address, “0x0001” as the source wireless address, and the destination short-circuit. The address includes “0x0000” and the source short address includes “0x0002”.

Next, the monitoring parent device 102 receives and processes the wireless packet from the monitoring child device 103_1.

In the communication system 301, the packet transmitted between the devices includes the PAN_ID. Thus, for example, even when the monitoring device 101 having the wrong PAN_ID is mounted in the work of mounting the monitoring device 101 on the steel tower 2, for example, the host device 181 can recognize the error. Note that the communication system 301 may have a configuration in which a packet transmitted between the devices does not include the PAN_ID.

Also, in the communication system according to the embodiment of the present invention, the monitoring device 101 is provided with the sensor 111, but the present invention is not limited to this. The sensor 111 may be provided outside the monitoring device 101.

In this case, the sensor 111 transmits information indicating the measurement result to the monitoring device 101 by wire communication or wireless communication.

In addition, the communication system according to the embodiment of the present invention may have a configuration in which some of the plurality of monitoring devices 101 include the sensor 111.

For example, a configuration may be adopted in which some of the plurality of monitoring devices 101 include the sensor 111, and other monitoring devices 101 do not include the sensor 111. In this case, the sensor 111 may be provided outside the monitoring device 101 having no sensor 111, and the sensor 111 may transmit measurement information indicating a measurement result to the monitoring device 101.

The monitoring apparatus 101 without the sensor 111 may be configured to transfer information from another monitoring apparatus 101 to another monitoring apparatus 101 without being a source of information.

Further, even in the communication system according to the embodiment of the present invention, between the plurality of monitoring apparatuses 101, one of the transfer of the wireless packet in the uplink and the transfer of the wireless packet in the downlink may be performed. Good.

By the way, in the network system described in Patent Literature 1, for example, communication using a specific low-power radio in the 2.4 GHz band is performed between wireless stations and between the wireless station and the master station, while the communication between the master station and the upper host station is performed. In this case, communication by a mobile phone line is performed.

Therefore, the communication protocol used between the wireless stations and between the wireless station and the master station is different from the communication protocol used between the master station and the upper host station. When communication is performed between devices having different communication protocols, for example, a method 1 in which an upper host station and a master station are provided with an address table for converting an address used in each communication protocol, and a wireless station A method 2 is considered in which the communication protocol used between the master station and the wireless station and the master station is matched with the communication protocol used between the master station and the host station.

However, when the method 1 is adopted, in addition to the necessity of the address conversion processing, when updating the address tables for the purpose of maintenance or the like, if the update is not consistent between the address tables, communication failure occurs. May occur.

{Circle around (2)} When the method 2 is adopted, the data size of the header of the communication between the wireless stations and between the wireless station and the master station increases, and the transmission amount increases.

On the other hand, in the communication system according to the embodiment of the present invention, the higher-level device 181 performs the first list information of the IP address used in the first lower-level layer in the communication between the higher-level device 181 and the collection device 151. The second list information of short addresses used in the second lower layer in communication between the device 151 and the monitoring parent device 102 and between the monitoring parent device 102 and the monitoring child device 103 is held. Then, different short addresses are fixedly assigned to the monitoring parent device 102, the monitoring child device 103, the collection device 151, and the higher-level device 181, respectively. The plurality of monitoring devices 101, the collection device 151, and the higher-level device 181 transmit and receive a packet in which a short address is stored as a source address and a destination address.

Thus, the first list information of the IP address used in the lower layer of the communication between the higher-level device 181 and the collection device 151 and the second list of the short address used in the lower layer of the communication between the collection device 151 and the monitoring device 101 With the configuration in which the higher-level device 181 holds the list information and different short addresses are fixedly assigned to the plurality of monitoring devices 101, the collection device 151, and the higher-level device 181, respectively, the lower level between the higher-level device 181 and the collection device 151 is set. Differences between layers and lower layers between the collection device 151 and the monitoring device 101 can be absorbed by the short address. This eliminates the need for an address table for converting addresses used in each communication protocol in the host device 181 and the collection device 151. Therefore, there is no need to perform the address conversion processing in the higher-level device 181 and the collecting device 151, and it is not necessary to match the updating of the address table between the higher-level device 181 and the collecting device 151.

Therefore, in the communication system according to the embodiment of the present invention, more stable operation can be realized in the power system.

The communication system according to the embodiment of the present invention includes a set of the collection device 151 and the plurality of monitoring devices 101, that is, a plurality of monitoring systems T. A different PAN_ID is fixedly assigned to each monitoring system T. The first list information indicates the correspondence between the PAN_ID and the IP address, and the second list information indicates the correspondence between the PAN_ID and the short address. The PAN_ID is further stored in the packet.

With such a configuration, it is possible to more stably operate the communication system 301 including the plurality of monitoring systems T each including the collection device 151 and the plurality of monitoring devices 101, and the host device 181.

The upper device according to the embodiment of the present invention includes first list information of an IP address used in a first lower layer in communication between the upper device 181 and the collecting device 151, and communication between the collecting device 151 and the monitoring parent device 102. , And second list information of short addresses used in the second lower layer in the communication between the monitoring parent device 102 and the monitoring child device 103. Then, different short addresses are fixedly assigned to the monitoring parent device 102, the monitoring child device 103, the collection device 151, and the higher-level device 181. The higher-level device 181 transmits and receives a packet in which a short address is stored as a source address and a destination address between the plurality of monitoring devices 101 and the collection device 151.

Therefore, the higher-level device according to the embodiment of the present invention can realize more stable operation in the power system.

The collection device according to the embodiment of the present invention includes first list information of an IP address used in a first lower layer in communication between the higher-level device 181 and the collection device 151, the first list information between the collection device 151 and the monitoring parent device 102. , And second list information of short addresses used in the second lower layer in the communication between the monitoring parent device 102 and the monitoring child device 103. Then, different short addresses are fixedly assigned to the monitoring parent device 102, the monitoring child device 103, the collection device 151, and the higher-level device 181, respectively. The collection device 151 transmits and receives a packet in which a short address is stored as a transmission source address and a transmission destination address to and from the plurality of monitoring devices 101 and the host device 181.

Thus, the first list information of the IP address used in the lower layer of the communication between the higher-level device 181 and the collection device 151 and the second list of the short address used in the lower layer of the communication between the collection device 151 and the monitoring device 101 The collection device 151 holds the list information and the different short addresses are fixedly assigned to the plurality of monitoring devices 101, the collection device 151, and the higher-level device 181, respectively. Differences between layers and lower layers between the collection device 151 and the monitoring device 101 can be absorbed by the short address. This eliminates the need for an address table for converting addresses used in each communication protocol in the host device 181 and the collection device 151. Therefore, there is no need to perform the address conversion processing in the higher-level device 181 and the collecting device 151, and it is not necessary to match the updating of the address table between the higher-level device 181 and the collecting device 151.

Therefore, the collection device according to the embodiment of the present invention can realize more stable operation in the power system.

Further, in the communication method according to the embodiment of the present invention, upper device 181 includes first list information of an IP address used in a first lower layer in communication between upper device 181 and collection device 151, collection device 151, The second list information of the short addresses used in the second lower layer in the communication between the monitoring parent devices 102 and between the monitoring parent device 102 and the monitoring child device 103 is held. Further, different short addresses are fixedly assigned to the monitoring parent device 102, the monitoring child device 103, the collecting device 151, and the higher-level device 181, respectively. In the communication method, first, the monitoring device 101, the collection device 151, or the higher-level device 181 transmits a packet in which a short address is stored as a source address and a destination address. Next, the monitoring device 101, the collection device 151, or the higher-level device 181 receives the packet.

As described above, the upper device 181 holds the first list information of the IP address used in the first lower layer and the second list information of the short address used in the second lower layer, and includes a plurality of monitoring devices. 101, a different short address is fixedly assigned to each of the collection device 151 and the upper device 181, and the difference between the lower layer between the higher device 181 and the collection device 151 and the difference between the lower layer between the collection device 151 and the monitoring device 101 are short-circuited. Can be absorbed by address. This eliminates the need for an address table for converting addresses used in each communication protocol in the host device 181 and the collection device 151. Therefore, there is no need to perform the address conversion processing in the higher-level device 181 and the collection device 151, and it is not necessary to match the updating of the address table between the higher-level device 181 and the collection device 151.

Therefore, the communication method according to the embodiment of the present invention can realize more stable operation in the power system.

The above embodiments are to be considered in all respects as illustrative and not restrictive. The scope of the present invention is defined by the terms of the claims, rather than the description above, and is intended to include any modifications within the scope and meaning equivalent to the terms of the claims.

The above description includes the features described below.
[Appendix 1]
A communication system used for an electric power system,
A plurality of monitoring devices for transferring information;
A collection device that acquires the measurement information transferred by the monitoring device,
Comprising a higher-level device capable of communicating with the collection device,
A first lower layer that is a lower layer in communication between the upper device and the collection device and a second lower layer that is a lower layer in communication between the collection device and the monitoring device are different,
The higher-level device holds first list information of a first terminal identifier used in the first lower layer, and second list information of a second terminal identifier used in the second lower layer,
The different second terminal identifier is fixedly assigned to each of the plurality of monitoring devices, the collection device, and the higher-level device,
The plurality of monitoring devices, the collection device and the higher-level device transmit and receive a packet in which the second terminal identifier is stored as a source address and a destination address,
The communication system, wherein the second list information further indicates a correspondence between the installation location of the tower and the network identifier.

2 steel tower 3 overhead ground wire 4 transmission line 101 monitoring device 102 monitoring parent device 103, 103_1, 103_2

monitoring device

104, 105 communication unit 106 battery 107 control unit 108 storage unit 111 sensor 151 collection device 181 host device 301 communication system T, T1, T2 monitoring system TL1, SL1 first list information TL2, SL2 second list information

Claims

A communication system used for an electric power system,
A plurality of monitoring devices for transferring information;
A collection device that acquires the information transferred by the monitoring device,
Comprising a higher-level device capable of communicating with the collection device,
A first lower layer that is a lower layer in communication between the upper device and the collection device and a second lower layer that is a lower layer in communication between the collection device and the monitoring device are different,
The higher-level device holds first list information of a first terminal identifier used in the first lower layer, and second list information of a second terminal identifier used in the second lower layer,
The different second terminal identifier is fixedly assigned to each of the plurality of monitoring devices, the collection device, and the higher-level device,
A communication system, wherein the plurality of monitoring devices, the collection device, and the host device transmit and receive a packet in which the second terminal identifier is stored as a source address and a destination address.
The communication system includes a plurality of sets of the collection device and the plurality of monitoring devices,
A different network identifier is fixedly assigned to each of the sets,
The first list information indicates a correspondence between the network identifier and the first terminal identifier,
The second list information indicates a correspondence between the network identifier and the second terminal identifier,
The communication system according to claim 1, wherein the network identifier is further stored in the packet.
An upper-level device in a communication system used for an electric power system,
The communication system includes a plurality of monitoring devices that transfer information, a collection device that acquires the information transferred by the monitoring device, and the host device that can communicate with the collection device.
A first lower layer that is a lower layer in communication between the upper device and the collection device is different from a second lower layer that is a lower layer in communication between the collection device and the monitoring device,
The higher-level device holds first list information of a first terminal identifier used in the first lower layer, and second list information of a second terminal identifier used in the second lower layer,
The second terminal identifier different from each of the plurality of monitoring devices, the collection device, and the host device is fixedly assigned,
The higher-level device, wherein the higher-level device transmits and receives a packet in which the second terminal identifier is stored as a source address and a destination address between the plurality of monitoring devices and the collection device.
A collection device in a communication system used for an electric power system,
The communication system includes a plurality of monitoring devices that transfer information, the collection device that obtains the information transferred by the monitoring device, and a higher-level device that can communicate with the collection device.
A first lower layer that is a lower layer in communication between the upper device and the collection device is different from a second lower layer that is a lower layer in communication between the collection device and the monitoring device,
The collection device holds first list information of a first terminal identifier used in the first lower layer, and second list information of a second terminal identifier used in the second lower layer,
The second terminal identifier different from each of the plurality of monitoring devices, the collection device, and the host device is fixedly assigned,
The collection device, wherein the collection device transmits and receives a packet in which the second terminal identifier is stored as a source address and a destination address to and from the plurality of monitoring devices and the host device.
A communication method in a communication system used for an electric power system,
The communication system includes a plurality of monitoring devices that transfer information, a collection device that acquires the information transferred by the monitoring device, and a higher-level device that can communicate with the collection device,
A first lower layer that is a lower layer in communication between the upper device and the collection device is different from a second lower layer that is a lower layer in communication between the collection device and the monitoring device,
The higher-level device holds first list information of a first terminal identifier used in the first lower layer, and second list information of a second terminal identifier used in the second lower layer,
The second terminal identifier different from each of the plurality of monitoring devices, the collection device, and the host device is fixedly assigned,
The monitoring device, the collection device or the higher-level device, a step of transmitting a packet in which the second terminal identifier is stored as a source address and a destination address;
Receiving the transmitted packet by the monitoring device, the collection device, or the higher-level device.