Beidou network distribution automation circuit and automation terminal

Abstract

The utility model relates to a kind of Beidou network distribution automation circuit, applied to Beidou network distribution automation terminal equipment, a kind of Beidou network distribution automation terminal circuit described in the utility model includes: protocol conversion board, radio frequency board, card slot board, antenna;The protocol board, the radio frequency board, the card slot board are all set in the base of the terminal equipment, and can communicate between each other, the radio frequency board and the antenna board are connected by data channel, the data channel includes being provided with two, in the time interval of information transmission to Beidou satellite by terminal, data channel can switch use, complete the timely reporting of abnormal information.The utility model relates to a kind of Beidou network distribution automation terminal circuit with simple structure, and the advantages of fast response speed to abnormal condition.

Description

Technical Field

[0001] This utility model relates to the technical field of power distribution networks, and in particular to a Beidou power distribution network automation circuit and automation terminal. Background Technology

[0002] BeiDou communication technology has been widely used, and existing BeiDou terminals have mature multi-channel selection technology. For example, the patent document with patent number CN201711455569.7 can use an MCU to control the SIM card array (SIM card switching unit) to automatically switch the channel selection of the SIM card, so as to switch to use different BeiDou user cards for communication, thereby improving communication quality and efficiency.

[0003] In power distribution networks, 10kV lines are typically long and located in harsh terrain, often in mountainous areas with poor or no signal. Currently, some smart switches used in these lines fail to operate properly or perform remote monitoring, protection, and control due to poor signal in mountainous regions, leading to prolonged power outages. Furthermore, the lack of public Wi-Fi signal prevents the establishment of communication stations. However, BeiDou distribution network automation terminal equipment, based on the BeiDou satellite communication system, can upload data collected from FTUs (Feeder Terminal Units) to remote BeiDou receiving servers, solving the problem of communication disruptions in remote areas.

[0004] However, with existing equipment, the information exchange time interval between the Beidou receiving server and the distribution network automation terminal equipment is on the order of minutes. If a fault or abnormality occurs in the power grid line within the time interval after the information exchange, it will cause users in the fault section to experience a long period of power outage. The distribution network automation terminal equipment has insufficient response capability to abnormal situations and has a low response speed. Utility Model Content

[0005] Based on this, the purpose of this utility model is to provide a Beidou distribution network automation terminal circuit, which is applied to distribution network automation terminal equipment and has the advantages of simple structure and fast response speed to abnormal conditions.

[0006] This utility model is achieved through the following technical solution:

[0007] A distribution network automation terminal circuit, comprising:

[0008] The system includes a protocol conversion board, an RF board, a card slot board, and an antenna; the RF board is provided with multiple data channels connected to the antenna.

[0009] The radio frequency board is connected to the card slot board, the protocol conversion board and the antenna respectively. The protocol conversion board communicates with the card slot board through the serial port connected to the radio frequency board and the card slot board.

[0010] The card slot board is equipped with a SIM card array including multiple SIM cards. Under the control of the MCU unit, the SIM card array automatically switches the channel selection of the SIM cards. Each channel of the SIM card is responsible for sending and receiving data.

[0011] The MCU unit of the protocol conversion board is used to receive power distribution network data sent by the external feeder terminal from the I / O interface, and send the protocol-converted and encrypted power distribution network data to the radio frequency board. After being processed by the radio frequency board, the power distribution network data is transmitted through the antenna.

[0012] The Beidou power distribution network automation terminal circuit described in this utility model, by setting multiple data channels on the radio frequency board, enables the power distribution network automation terminal circuit to switch data channels simultaneously with switching Beidou user cards when the power grid experiences an anomaly again during the communication interval between the power distribution terminal equipment and the Beidou satellite. The power distribution network automation terminal circuit can immediately transmit information about the power grid anomaly in the area to the Beidou satellite, which then transmits it to the master station. The master station responds promptly, enabling the power grid to quickly return to normal and improving the response speed of the power distribution network automation terminal equipment to abnormal situations.

[0013] Furthermore, the SIM card array includes two SIM cards, and the radio frequency board is provided with two corresponding data channels.

[0014] Furthermore, the I / O interface includes five connection ports, namely an RS232 ground port, an RDSS serial port transmit port, an RDSS serial port receive port, a power port, and a power ground port.

[0015] Furthermore, the card slot plate includes multiple drawer-type card slots, and the SIM card is disposed in the drawer-type card slots.

[0016] Furthermore, the slot on the slot plate is disposed on the outer edge of the slot plate.

[0017] On the other hand, this utility model provides a Beidou power distribution network automation terminal, including a shell, a base, a fixing frame, and a Beidou power distribution network automation terminal circuit as described above; the shell is covered on the base, and the fixing frame is disposed on the base and located in the internal cavity formed by the shell and the base; the protocol conversion board, the radio frequency board, and the slot plate are disposed on the fixing frame, and the protocol conversion board, the radio frequency board, and the slot plate are connected in parallel to each other; the antenna is disposed on the top of the fixing frame.

[0018] Furthermore, it also includes an external connection cable, one end of which is connected to the I / O interface, and the other end forms a plug for connection to an external feeder terminal; the plug is an aviation plug.

[0019] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0020] Figure 1 This is an overall structural diagram of the internal structure of the Beidou power distribution network automation terminal equipment of this utility model;

[0021] Figure 2 This is a connection framework diagram of the Beidou power distribution network automation terminal circuit of this utility model;

[0022] Figure 3 This is a structural diagram of the card slot board of the Beidou power distribution network automation terminal circuit of this utility model.

[0023] Figure descriptions: 10: Base; 20: Mounting bracket; 30: Terminal circuit; 31: Protocol conversion board; 32: Radio frequency board; 33: Card slot board; 34: Antenna. Detailed Implementation

[0024] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0025] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0027] To address the technical problems in the background art, this utility model embodiment provides a Beidou distribution network automation terminal circuit, combined with... Figure 1-2 In one embodiment, the BeiDou power distribution network automation terminal circuit is disposed in the BeiDou power distribution network terminal equipment. The BeiDou power distribution network terminal equipment includes a base 10, an external connection cable (not shown), a mounting bracket 20, a terminal circuit 30, and a housing (not shown).

[0028] The bottom of the base 10 has a through hole through which an external connection cable is connected to an aviation plug, and then connected to the FTU (feeder terminal unit) via the aviation plug.

[0029] The two ends of the fixing bracket 20 are set on the base 10 and are perpendicular to the contact surface of the base 10.

[0030] The terminal circuit 30 is fixed inside the base 10 by the mounting bracket 20; one end of the terminal circuit 30 is connected to an external connection cable, and the outer shell is adapted to the base to surround the terminal circuit.

[0031] The terminal circuit includes: a protocol conversion board 31, an RF board 32, a card slot board 33, and an antenna 34. The protocol conversion board 31 is interconnected with the RF board 32 and the card slot board 33. The protocol conversion board 31 is also connected to an external connection cable, and the RF board 32 is also connected to the antenna 34.

[0032] The protocol conversion board includes an I / O interface and an MCU unit. The I / O interface connects to external cables and has five ports: an RS232 ground port, an RDSS serial transmit port, an RDSS serial receive port, a power interface, and a power ground port. The I / O interface is used to power the distribution network terminal equipment and to receive data from the FTU (Feeder Terminal Unit) and transmit the data to the MCU unit; it also performs information exchange functions, receiving data returned by the MCU unit and transmitting it to the FTU.

[0033] The MCU unit can convert the information transmitted on the I / O interface according to the communication protocol, and encrypt the data after conversion to ensure the security of the data during the transmission of information to the Beidou satellite. The MCU unit can also be used to decrypt the data transmitted back by the Beidou satellite and transmit the encrypted data to the radio frequency board.

[0034] The radio frequency (RF) board 32 includes a signal modulation circuit and multiple data channels. The signal modulation circuit modulates the data transmitted by the protocol conversion board 31, modulating the low-frequency baseband signal into the RF domain to reduce data loss during long-distance transmission. It also converts received high-frequency signals into low-frequency baseband signals. Each data channel is connected to the RF board 32 at one end and to the antenna 34 at the other, transmitting the modulated signal from the RF board 32 to the antenna 34. In this embodiment, there are two data channels.

[0035] The card slot board 33 is connected to the radio frequency board 34 and to the protocol conversion board 31 via a serial port. The card slot board 31 includes a SIM card array containing multiple SIM cards. Under the control of the MCU unit, the SIM card array automatically switches the channel selection of the SIM cards. The side of the card slot board containing the SIM cards is away from the radio frequency board 32, facilitating the replacement or maintenance of Beidou SIM cards.

[0036] Antenna 34 is connected to radio frequency board 32 through a data channel. Antenna 34 is used to transmit data to Beidou satellite, provide positioning information, and receive data returned by Beidou satellite.

[0037] The working process of a Beidou power distribution network terminal device that applies a Beidou power distribution network automation terminal circuit according to an embodiment of this utility model is as follows:

[0038] After the distribution network terminal equipment is installed, the MCU unit reads the SIM card information in the card slot board 34 to obtain permission to communicate with the Beidou satellite. The distribution network terminal equipment obtains the FTU data through the external connection cable and transmits the data to the MCU unit through the I / O interface. The MCU unit on the protocol conversion board processes and converts the acquired data according to the communication protocol. After the conversion is completed, the data is encrypted for security. The MCU unit transmits the processed data to the radio frequency board. The signal modulation circuit of the radio frequency board modulates the low-frequency baseband signal and converts it into a high-frequency signal in the radio frequency domain. The high-frequency signal is sent to the antenna through the corresponding data channel. The antenna transmits the high-frequency signal to the Beidou satellite, and the Beidou satellite sends the data to the data center.

[0039] The time interval between the distribution network terminal equipment and the Beidou satellite equipment is one minute. After the distribution network terminal equipment transmits information to the Beidou satellite once, the data channel used cannot be used within one minute. If the distribution network terminal equipment receives abnormal information within one minute, the data channel used cannot send data. At this time, the MCU unit controls the SIM array to switch the selected Beidou SIM card channel. After the SIM array unit completes the channel switching, the radio frequency board switches to the data channel it uses. The MCU unit transmits the encrypted data to the radio frequency board. After receiving the abnormal data, the radio frequency board uses the switched data channel to transmit the modulated signal to the antenna, and the antenna sends it to the Beidou satellite. The Beidou satellite sends it to the master station to complete the timely reporting of abnormal power grid conditions.

[0040] In another preferred embodiment, the card slot on the card slot plate has a drawer-type design, which allows the replacement of the Beidou user card without complicated disassembly, making it more convenient to use.

[0041] Combination Figure 3 In another embodiment, the card slot on the card slot plate is located on the outer edge of the card slot plate and is adapted to a drawer-type design to facilitate the removal or insertion of the SIM card.

[0042] In another preferred embodiment, the protocol conversion board and the card slot board are disposed on both sides of the RF board. Since the RF board connects to the other three components, placing it at the center of the three components reduces wiring length and avoids tangling.

[0043] This utility model provides a Beidou distribution network automation terminal circuit, applied to distribution network automation terminal equipment. By adding a simple data channel structure, it improves the response capability of the distribution network automation terminal equipment to continuous abnormal conditions. This Beidou distribution network automation terminal equipment has the advantages of simple structure and the ability to reduce the risk of losses caused by prolonged power outages in the regional power grid due to continuous abnormalities.

[0044] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and this utility model also intends to include these modifications and variations.

Claims

1. A Beidou power distribution network automation terminal circuit, characterized in that, include: Protocol conversion board, RF board, card slot board, and antenna; The radio frequency board is provided with multiple data channels connected to the antenna; The radio frequency board is connected to the card slot board, the protocol conversion board and the antenna respectively. The protocol conversion board communicates with the card slot board through the serial port connected to the radio frequency board and the card slot board. The protocol conversion board includes an I / O interface for external communication and an MCU unit; The card slot board is equipped with a SIM card array including multiple SIM cards. Under the control of the MCU unit, the SIM card array automatically switches the channel selection of the SIM cards. Each channel of the SIM card is responsible for sending and receiving data. The MCU unit of the protocol conversion board is used to receive power distribution network data sent by the external feeder terminal from the I / O interface, and send the protocol-converted and encrypted power distribution network data to the radio frequency board. After being processed by the radio frequency board, the power distribution network data is transmitted through the antenna.

2. The Beidou power distribution network automation circuit according to claim 1, characterized in that, The SIM card array includes two SIM cards, and the radio frequency board has two corresponding data channels.

3. The Beidou power distribution automation circuit according to claim 2, characterized in that, The I / O interface includes five connection ports: an RS232 ground port, an RDSS serial port transmit port, an RDSS serial port receive port, a power port, and a power ground port.

4. The Beidou power distribution automation circuit according to claim 1, characterized in that, The card slot plate includes multiple drawer-type card slots, and the SIM card is disposed in the drawer-type card slots.

5. The Beidou power distribution automation circuit according to claim 4, characterized in that, The slot on the slot plate is located on the outer edge of the slot plate.

6. A Beidou power distribution network automation terminal, characterized in that: Includes a housing, a base, a mounting bracket, and the Beidou power distribution network automation terminal circuit as described in any one of claims 1-5; The outer shell is mounted on the base, and the fixing frame is mounted on the base and located within the internal cavity formed by the outer shell and the base. The protocol conversion board, the radio frequency board, and the card slot plate are mounted on the mounting frame, and the protocol conversion board, the radio frequency board, and the card slot plate are connected in parallel to each other; the antenna is mounted on the top of the mounting frame.

7. A Beidou power distribution automation terminal according to claim 6, characterized in that: It also includes an external connection cable, one end of which is connected to the I / O interface, and the other end forms a plug for connection to an external feeder terminal; the plug is an aviation plug.

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