CN216217355U - Networking module and system applied to local area network communication of power distribution network - Google Patents
Networking module and system applied to local area network communication of power distribution network Download PDFInfo
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- CN216217355U CN216217355U CN202122638406.0U CN202122638406U CN216217355U CN 216217355 U CN216217355 U CN 216217355U CN 202122638406 U CN202122638406 U CN 202122638406U CN 216217355 U CN216217355 U CN 216217355U
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Abstract
The utility model provides a networking module and a system applied to power distribution network field local area network communication, wherein the networking module applied to the power distribution network field local area network communication comprises a shell, a communication module is arranged in the shell, the communication module comprises a wireless board, a power supply board and an RS485 board which are mutually connected, a local wireless communication interface extending to the outside of the shell is connected to the wireless board, a direct connection communication interface extending to the outside of the shell is connected to the RS485 board, and the shell is also provided with an RS485 communication interface; and the direct connection communication interface, the RS485 communication interface and the local wireless communication interface are communicated in an internal physical transparent transmission mode. The utility model can realize the hybrid networking of the local area network, realizes the convenient communication link connection of RS485, local area network wireless and TTL direct connection physical media through the hardware circuit design, provides a simple and reliable communication networking mode for the field communication networking of the power distribution network, and provides a convenient power supply for a sensor powered by field low-voltage direct current.
Description
Technical Field
The utility model belongs to the technical field of local area network communication, and particularly relates to a networking module and a networking system applied to local area network communication in a power distribution network field.
Background
A plurality of terminal devices, instruments and meters or various sensors are arranged on the site of the power distribution network, and data communication is generally realized by adopting communication modules or circuits respectively arranged on the terminal devices, the instruments and the meters. Currently, there are three general lan communication networking modes, i.e., RS485 wired networking, wireless lan networking, and multi-type networking, which are shown in fig. 1a, 1b, and 1c, respectively. The three local area network networking modes are all star-type networking, and the wireless communication mode is also star-type even with a relay function, namely, one gateway device is connected with a plurality of meters or sensor devices.
However, the existing power distribution network local area network communication networking mode has the following disadvantages:
1) the existing networking mode adopting an RS485 single system has the disadvantages of complicated field construction and long distance, and can cause poor communication effect and even poor communication;
2) the method adopts a single-system wireless networking, is difficult to fully cover due to the influence of communication distance and shielding reasons, and a plurality of low-end sensing devices do not have wireless communication interfaces, so that the single networking is difficult to cover;
3) the field application also adopts a plurality of hybrid networking, because the usage amount of gateway equipment is small, the gateway equipment has the advantages of more wireless and difficult interface, but the communication interface of the acquired sensing equipment generally adopts RS485 or a single wireless module, and does not adopt a plurality of interfaces, so that the gateway equipment is required to be matched with a plurality of wireless interfaces (such as RF, Lora, zigBee and the like), and the problem of difficult hardware compatibility also exists;
4) communication networking is also used in the information-based transformation of the existing low-voltage distribution network, the purpose cannot be achieved only by adding gateway equipment, and data acquisition can be realized only by frequently replacing the gateway equipment and original instruments or sensor equipment together in the data acquisition process.
Disclosure of Invention
The utility model aims to solve the problems and provides a networking module and a system applied to local area network communication in a power distribution network site, which can simply, flexibly and low-cost realize local area network communication in the distribution network environment of the existing high-low voltage power distribution room and the like.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the networking module applied to the field local area network communication of the power distribution network comprises a shell, wherein a communication module is arranged in the shell and comprises a wireless board, a power supply board and an RS485 board which are connected with each other, the wireless board is connected with a local wireless communication interface extending to the outside of the shell, the RS485 board is connected with a direct connection communication interface extending to the outside of the shell, and the shell is also provided with an RS485 communication interface; and the direct connection communication interface, the RS485 communication interface and the local wireless communication interface are communicated in an internal physical transparent transmission mode. The networking module has three communication modes of direct connection communication, RS485 communication and wireless communication, the three communication modes adopt an internal physical transparent transmission mode for intercommunication, and terminals and instruments of the three communication modes can be interconnected and intercommunicated by additionally arranging the networking module, so that the function of local area network hybrid networking is achieved.
Furthermore, the wireless board, the power supply board and the RS485 board are in supporting connection and circuit connection between boards through the connecting seat between the boards. The connecting seat between boards can not only play a role in supporting and fixing the boards, but also can carry out power connection and communication interaction between the boards.
Furthermore, the shell comprises two shell mechanisms which can be combined and spliced; the shell is in a guide rail type installation mode, and the bottom of the shell is provided with two guide rail installation bayonets; and the shell is also provided with an AC/DC power supply interface and a grounding terminal. The utility model adopts a guide rail type installation mode, and can facilitate the installation and the disassembly of the networking module. The networking module is also provided with an AC/DC power supply interface and a grounding terminal, and the networking module can supply power for the networking module when being connected with the gateway equipment in a wireless mode by connecting the AC/DC power supply interface with an external power supply and can be connected with different power supplies according to field use conditions.
Furthermore, the networking module is also provided with a power indicator light and a communication indicator light which are connected with the power supply board through lines. The power indicator lamp is used for indicating the power supply power-on state of the module, if the power supply is powered on, the power supply is normally on, and if the power supply is not powered on, the power supply is not on; the communication indicator light is used for indicating the communication state of the module, if the communication is normal, the constant value of the green light is constant, if the communication is positive, the green light flickers, and if the communication is failed, the red light flickers.
Further, the RS485 board comprises a communication chip, and the RS485 board is isolated from the direct connection communication interface through an optical coupler.
Further, the input power supply of the power supply board is an alternating current and direct current power supply of 85V-285V, and a grounding PE terminal is provided; two output direct current power supplies are respectively connected with the external sensor and the RS485 board and can provide power for the external sensor and the RS485 board.
Further, a direct current power supply output interface for providing a power supply for the sensor is further arranged on the shell, and the direct current power supply output interface is connected with a 5V direct current power supply output by the power supply board. The utility model provides the output of the external 5V direct current power supply through the direct current power supply output interface and can provide a power supply for the on-site sensor.
Furthermore, a Lora wireless communication module, a ZigBee wireless communication module and/or an RF wireless module are arranged on the wireless board, and the Lora wireless communication module, the ZigBee wireless communication module and/or the RF wireless module are connected to the RS485 board so as to be compatible with various communication modes of Lora, Zigbee and/or RF. The wireless communication modes of Lora, ZigBee and RF in the local area network can be realized, and the applicability of field application and installation is expanded.
The utility model also provides a networking system applied to the field local area network communication of the power distribution network, which comprises a plurality of networking modules applied to the field local area network communication of the power distribution network, wherein the networking modules are in communication connection, the networking modules are provided with different wireless modules according to different on-site sub-node devices, and the wireless modules comprise a Lora wireless communication module, a ZigBee wireless communication module and an RF wireless module. If the sub-node equipment is in an RF wireless mode, the wireless module is a networking module of the RF module, and the networking module of different types can be used for realizing communication with all the sub-node equipment in the wireless mode.
Compared with the prior art, the utility model has the advantages that:
1. the networking module and the system applied to the field local area network communication of the power distribution network can realize the mixed networking of the local area network, realize the convenient communication link connection of RS485, local area network wireless and TTL direct connection physical media through the hardware circuit design, realize the networking communication of different communication medium interfaces by the communication gateway equipment only by managing logical addresses, provide a simple and reliable communication networking mode for the field communication networking of the power distribution network, and provide a convenient power supply for a sensor powered by field low-voltage direct current;
2. the networking module can set various channels with different frequency points in the networking method, thereby eliminating channel interference in the same local area network, realizing the mixed networking of an RS485 wired mode and an RF, ZigBee and Lora wireless communication mode in the local area network through the networking module, and expanding the applicability of field application and installation.
Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model.
Drawings
FIG. 1a is an RS485 networking of existing local area networks;
FIG. 1b is a wireless networking of an existing local area network;
FIG. 1c is a hybrid networking of existing local area networks;
FIG. 2 is a schematic structural diagram of a networking module for local area network communication in a distribution network according to the present invention;
FIG. 3 is an internal block diagram of a networking module of the present invention;
FIG. 4 is a schematic flow chart of example 3;
FIG. 5a is a schematic diagram of the wireless board of the present invention compatible with Lora wireless communication;
FIG. 5b is a schematic diagram of the wireless board of the present invention compatible with ZigBee wireless communication;
FIG. 6 is a principal schematic diagram of the power supply board of the present invention;
fig. 7 is a principal schematic diagram of the RS485 board of the present invention.
In the figure, a communication module 1, a direct connection communication interface 2, a local wireless communication interface 3, an RS485 communication interface 4, a direct current power supply output interface 5, a power indicator lamp 6, a communication indicator lamp 7, an alternating current/direct current power supply interface 8, a grounding terminal 9, a guide rail mounting bayonet 10, a shell mechanism 11, a wireless board 12, a power supply board 13, an RS485 board 14 and an inter-board connecting seat 15.
Detailed Description
In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
Example 1
As shown in fig. 2, the networking module applied to the field lan communication of the power distribution network in the embodiment includes a housing, a communication module 1 is arranged inside the housing, the communication module 1 includes a wireless board 12, a power supply board 13 and an RS485 board 14 which are connected with each other, the wireless board 12 is connected with a local wireless communication interface 3 extending to the outside of the housing, the RS485 board 14 is connected with a direct connection communication interface 2 extending to the outside of the housing, and the housing is further provided with an RS485 communication interface 4; the direct connection communication interface 2, the RS485 communication interface 4 and the local wireless communication interface 3 are communicated in an internal physical transparent transmission mode. The networking module has three communication modes of direct connection communication, RS485 communication and wireless communication, the three communication modes adopt an internal physical transparent transmission mode for intercommunication, and terminals and instruments of the three communication modes can be interconnected and intercommunicated by additionally installing the networking module, so that the function of local area network hybrid networking is achieved.
The wireless board 12 and the power supply board 13, and the power supply board 13 and the RS485 board 14 of the present embodiment are respectively connected to each other through the inter-board connection socket 15. The connecting seat between the boards of the embodiment can play a role in supporting and fixing the boards, and can also be used for power supply and communication connection of two circuit boards connected through the connecting seat between the boards. And two adjacent circuit boards can be connected by a plurality of inter-board connecting seats according to requirements.
The internal structure diagram of the networking module of the embodiment is shown in fig. 3, the housing is formed by combining two housing mechanisms 11 from left to right, and the two housing mechanisms 11 are approximately symmetrical in shape except for different interfaces; in this embodiment, the housing is installed in a rail-type manner, and the bottom of the housing is provided with two rail-mounting bayonets 10, that is, the bottom of each of the two housing mechanisms 11 is provided with one rail-mounting bayonet 10.
The inner wall that this embodiment shell was two shell mechanisms corresponds the position and is provided with the mounting groove, wireless board 12, power supply board 13 and RS485 board 14 all insert establish the installation can, after the installation, directly connect each board through the circuit, can make things convenient for mass production, equipment convenient and fast.
The casing of the embodiment is also provided with an AC/DC power supply interface 8 and a grounding terminal 9. The networking module of the embodiment is also provided with an AC/DC power supply interface 8 and a grounding terminal 9, and the networking module can supply power when being connected with gateway equipment in a wireless mode by being connected with an external power supply through the AC/DC power supply interface and can be connected with different power supplies according to field use conditions.
The networking module of the embodiment is further provided with a power indicator lamp 6 and a communication indicator lamp 7. The networking module of the embodiment is provided with the power indicator lamp 6 and the communication indicator lamp 7, and the power is provided by the power supply board 13, so that the work indication in field installation can be facilitated.
As shown in fig. 5a and 5b, the wireless board 12 of this embodiment adopts a unified interface compatible with Lora wireless, ZigBee wireless, and RF wireless communication modes. The wireless board is provided with a Lora wireless communication module, a ZigBee wireless communication module and an RF wireless module, and the Lora wireless communication module, the ZigBee wireless communication module and the RF wireless module are all connected to an RS485 board so as to be compatible with various communication modes of Lora, Zigbee and RF. The wireless communication modes of Lora, ZigBee and RF in the local area network can be realized, and the applicability of field application and installation is expanded. The user can select to set up one or more in Lora wireless communication module, zigBee wireless communication module and the RF wireless module on the wireless board according to the demand, also can set up other wireless communication modules in a flexible way on the wireless board.
As shown in fig. 6, the power supply board 13 of the present embodiment selects an HF900 AC/DC chip of MPS corporation, has an input range of 85V to 285V AC/DC input, and provides a grounding PE terminal; two paths of direct current power supplies are output, one path of direct current supplies a module working power supply and supports output to an external terminal, and the other path of direct current supplies power for other external sensors, and the other path of direct current supplies power for isolation output and provides an isolation power supply for RS 485.
The casing of this embodiment is provided with a dc power output interface 5 for providing a power supply for the sensor, and the dc power output interface 5 is connected with a 5V dc power supply output by the power supply board 13. The embodiment provides an external 5V direct-current power supply output through the direct-current power supply output interface 5, and can provide a power supply for the field sensor.
As shown in fig. 7, the RS485 board 14 of this embodiment is provided with a communication chip, the RS485 board 14 of this embodiment selects a MAX13085 communication chip of meixin corporation, and the RS485 is isolated from the wireless and direct-connected interface by an optocoupler. The RS485 circuit is isolated through the optical coupler E4 and the optical coupler E5, and a Receiving (RXD) Transmitting (TXD) signal before isolation is directly connected with an external direct connection interface and a receiving and transmitting of the wireless module. Namely, the receiving and transmitting of the external direct connection interface and the wireless module are directly connected with the Receiving (RXD) Transmitting (TXD) signal in the RS485 circuit and then isolated through the optical coupler E4 and the optical coupler E5, and then connected with the corresponding pin of the MAX13085 communication chip.
In this embodiment, the networking device and the gateway device are connected by RS485, and a user can adopt a 485 wired mode for a wired communication gateway; aiming at the wireless communication gateway, a wireless communication mode is adopted; for a hybrid gateway, both are possible. The method can be also applied to all types of gateway equipment at present, and has extremely high universal applicability.
Example 2
The embodiment also provides a networking system applied to the communication of the field local area network of the power distribution network, which comprises a plurality of networking modules applied to the communication of the field local area network of the power distribution network, the networking modules are in communication connection, the networking modules are provided with different wireless modules according to different sub-node devices on site, and each wireless module comprises a Lora wireless communication module, a ZigBee wireless communication module and an RF wireless module. The utility model can realize the communication with all wireless child node devices by utilizing different types of networking modules.
When the sub-node equipment is in an RF wireless mode, a wireless module is configured here as a networking module of the RF module; when the child node equipment is in a Lora wireless mode, a wireless module is configured here as a networking module of the Lora module; when the child node equipment is in a ZigBee wireless mode, the wireless module is a networking module of the ZigBee module.
Example 3
As shown in fig. 4, this embodiment provides a networking method applied to distribution network local area network communication, including the networking module applied to distribution network local area network communication of embodiment 1, where the networking module involved in this embodiment, that is, each novel networking module in fig. 4, specifically includes the following steps:
s1, the communication gateway equipment is connected with a networking module in an RS485 mode, and the networking module synchronously and transparently forwards data sent by the communication gateway equipment to a wireless module in the networking module;
s2, the networking module performs communication forwarding on the data sent by the communication gateway equipment through multiple modes: an RS485 module of the networking module is connected with a plurality of sub-node devices without wireless communication functions in a bus form, an internal direct connection interface of the networking module is directly connected with a TTL level sensor, and the networking module forwards data frames of gateway devices in a wireless form to be connected with the plurality of sub-node devices with wireless communication functions;
the S3 and RS485 modules are simultaneously connected with a plurality of other networking modules in a bus form and further expanded into a plurality of wireless nodes;
and S4, the data of the RS485 bus received by the other networking modules are also transmitted to the wireless communication channel in a transparent transmission mode, and the networking modules also carry out communication transmission on the data sent by the communication gateway equipment in multiple modes.
According to the embodiment, the mixed networking of the local area network can be realized through the networking module, the networking module can be provided with channels with different frequency points at most in the networking environment, so that channel interference in the same local area network is eliminated, the mixed networking of an RS485 wired mode and an RF, ZigBee and Lora wireless communication mode in the local area network is realized through the networking module, and the applicability of field application and installation is expanded.
The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.
Claims (9)
1. The networking module applied to the communication of the local area network of the power distribution network comprises a shell and is characterized in that a communication module (1) is arranged inside the shell, the communication module (1) comprises a wireless board (12), a power supply board (13) and an RS485 board (14) which are connected with each other, a local wireless communication interface (3) extending to the outside of the shell is connected to the wireless board (12), a direct connection communication interface (2) extending to the outside of the shell is connected to the RS485 board (14), and an RS485 communication interface (4) is further arranged on the shell; the direct connection communication interface (2), the RS485 communication interface (4) and the local wireless communication interface (3) are communicated in an internal physical transparent transmission mode.
2. The networking module applied to the distribution network field local area network communication is characterized in that the wireless board (12), the power supply board (13) and the RS485 board (14) are connected in a supporting mode and in a circuit mode through an inter-board connecting seat (15).
3. Networking module for distribution network local area network communication according to claim 1, characterized in that the housing comprises two housing means (11) that can be merged and spliced; the shell is in a guide rail type installation mode, and the bottom of the shell is provided with two guide rail installation bayonets (10); the shell is also provided with an AC/DC power supply interface (8) and a grounding terminal (9).
4. Networking module for distribution network local area network communication according to claim 1, wherein the networking module is further provided with a power indicator (6) and a communication indicator (7) connected with the power board.
5. The networking module applied to the distribution network field local area network communication is characterized in that the RS485 board (14) comprises a communication chip, and the RS485 board (14) is isolated from the direct connection communication interface (2) through an optical coupler.
6. The networking module applied to the distribution network field local area network communication is characterized in that the input power supply of the power supply board (13) is an 85V-285V alternating current and direct current power supply, and a grounding PE terminal is provided; two output direct current power supplies are respectively connected with an external sensor and the RS485 board (14) to provide power.
7. The networking module applied to the local area network communication on the power distribution network site is characterized in that a direct current power supply output interface (5) for providing power supply for the sensor is further formed in the shell, and the direct current power supply output interface (5) is connected with a 5V direct current power supply output by the power supply board (13).
8. The networking module applied to the local area network communication of the power distribution network field is characterized in that a Lora wireless communication module, a ZigBee wireless communication module and/or an RF wireless module are arranged on the wireless board (12), and the Lora wireless communication module, the ZigBee wireless communication module and/or the RF wireless module are connected to an RS485 board.
9. Networking system for distribution network local area network communication, characterized in that, it comprises a plurality of networking modules for distribution network local area network communication according to any claim 1-8, the networking modules are connected with each other in communication, and the networking modules are equipped with different wireless modules according to different sub-node devices in the field.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202122638406.0U CN216217355U (en) | 2021-10-28 | 2021-10-28 | Networking module and system applied to local area network communication of power distribution network |
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| CN202122638406.0U CN216217355U (en) | 2021-10-28 | 2021-10-28 | Networking module and system applied to local area network communication of power distribution network |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114125582A (en) * | 2021-10-28 | 2022-03-01 | 杭州华立电力系统工程有限公司 | Networking module, system and method applied to local area network communication of power distribution network |
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2021
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114125582A (en) * | 2021-10-28 | 2022-03-01 | 杭州华立电力系统工程有限公司 | Networking module, system and method applied to local area network communication of power distribution network |
| CN114125582B (en) * | 2021-10-28 | 2024-05-14 | 杭州华立电力系统工程有限公司 | Networking module, system and method applied to field local area network communication of power distribution network |
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