Power line carrier communication switch control device

Abstract

The utility model discloses a power line carrier communication switch control device, which relates to the technical field of switch control and comprises a controller module, a receiving and transmitting control chip, a receiving frequency selection circuit, a transmitting frequency selection circuit, an isolation and control signal frequency selection circuit and a power amplification circuit. The operation of a traditional manual control type mechanical air switch cannot be remotely controlled, the device adopts a power line as a communication channel, the remote control function of a switch circuit is realized by means of cooperative work of components such as a controller module and a receiving and sending control chip, and in a practical application scene, an operator does not need to arrive at an equipment site and can remotely send a signal to realize remote control of the switch circuit. And the on-off state is controlled after power line transmission, so that the convenience and flexibility of operation are greatly improved, the device is particularly suitable for places such as a transformer substation needing remote operation equipment, and the technical development requirements of unmanned inspection and operation of the transformer substation are met.

Description

Technical Field

[0001] This utility model relates to the field of switch control technology, and in particular to a power line carrier communication switch control device. Background Technology

[0002] Power line carrier communication switch control devices play a crucial role in modern power systems as key equipment for remote control of power equipment. Utilizing power lines as communication channels, they transmit control signals via these lines, enabling remote operation of switch circuits. In practical applications such as substations, industrial plants, and intelligent buildings, power line carrier communication switch control devices are typically connected to various types of power equipment, undertaking the important task of controlling the equipment's operating status.

[0003] Currently, common power line carrier communication switch control devices mainly include the following key components:

[0004] 1. The controller module, as the core control unit, is responsible for processing various control commands and data. A common example is the STC12C2052 microcontroller, which can accurately coordinate the operation of various circuits.

[0005] 2. The receiving and transmitting control chip is used to realize the signal transmission and reception function. For example, the BWP08 receiving and transmitting control chip adopts half-duplex communication mode to ensure stable signal transmission.

[0006] To meet the power system's demand for remote switch control, the industry has adopted various technologies and device designs. Some products improve data transmission speed and stability by optimizing communication protocols; others innovate in hardware design, using high-performance chips and circuit components to enhance the overall performance of the device.

[0007] However, existing power line carrier communication switch control devices still face many problems in practical applications. Regarding communication reliability, some devices are significantly affected by power line environmental interference, leading to signal transmission interruptions or errors, resulting in inaccurate transmission of control commands and affecting the normal operation of power equipment. In terms of cost control, some devices employ sophisticated and complex circuit designs and expensive chips, resulting in high product costs and limiting their widespread adoption in large-scale applications. Regarding maintenance convenience, complex circuit structures and designs make troubleshooting difficult, leading to high maintenance costs and long maintenance cycles. Once a fault occurs, it may affect the normal power supply of the power system. This application addresses these problems by proposing a power line carrier communication switch control device that features simple circuitry, low cost, minimal circuit maintenance, and easy debugging. It effectively solves the shortcomings of existing devices and improves the operating efficiency and reliability of the power system. Utility Model Content

[0008] To address the shortcomings of existing technologies, this utility model provides a power line carrier communication switch control device, which solves the problem that some devices are greatly affected by power line environmental interference, and signal transmission is prone to interruption or error, resulting in the inaccurate transmission of control commands and affecting the normal operation of power equipment.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] A power line carrier communication switch control device includes a controller module, a receiving and transmitting control chip, a receiving frequency selection circuit, a transmitting frequency selection circuit, an isolation and control signal frequency selection circuit, and a power amplifier circuit. The receiving and transmitting control chip adopts half-duplex communication and outputs a transmitting signal. The transmitting frequency selection circuit, the isolation and control signal frequency selection circuit, and the power amplifier circuit amplify the transmitting signal and couple it to the power line. The controller module is an STC 12C2052 microcontroller.

[0011] Preferably, the receiving and transmitting control chip is a BWP08 type control chip, and the receiving frequency selection circuit, transmitting frequency selection circuit, and isolation and control signal frequency selection circuit are LC circuits with frequency selection characteristics.

[0012] Preferably, the signal frequency of the selected receiving frequency selection circuit, transmitting frequency selection circuit and isolation and control signal frequency selection circuit is (115±5)KHz, and the power amplifier circuit is composed of transistors.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. Traditional manual mechanical air switches require direct human intervention and cannot be remotely controlled. This device, however, uses power lines as a communication channel and, with the help of a controller module, receiving and transmitting control chips, etc., enables remote control of the switch circuit. In practical applications, operators do not need to be physically present at the equipment site. They can control the switch status by remotely sending signals, which are then transmitted via the power lines. This greatly improves the convenience and flexibility of operation, making it particularly suitable for locations such as substations that require remote equipment operation. It meets the technological development needs for unmanned operation and inspection in substations.

[0015] 2. The controller module uses the STC 12C2052 microcontroller, and the receiving and transmitting control chip uses the BWP08 chip. These chips are relatively low in cost and have a stable market supply. At the same time, the common electronic components used in the circuit, such as transistors, capacitors, and resistors, are inexpensive, further reducing the overall cost. When applied on a large scale, the cost advantage will be more obvious, which will help promote its use in cost-sensitive industries such as power companies. Attached Figure Description

[0016] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0017] Figure 1 This is a circuit diagram of the present invention.

[0018] Figure 2 This is a circuit diagram illustrating the principle structure of this utility model.

[0019] Figure 3 This is a diagram of the carrier communication connection structure of this utility model. Detailed Implementation

[0020] This application provides a power line carrier communication switch control device, which effectively solves the problem that some devices are greatly affected by power line environmental interference, and signal transmission is prone to interruption or error, resulting in the inaccurate transmission of control commands and affecting the normal operation of power equipment. The proposed power line carrier communication switch control device has the characteristics of simple circuit, low cost, low circuit maintenance and easy debugging, which can effectively solve the shortcomings of existing devices and improve the operating efficiency and reliability of power systems. Example

[0021] like Figure 1 , Figure 2 and Figure 3 As shown, the technical solution in this application embodiment effectively solves the technical problem that some devices are greatly affected by power line environmental interference, and signal transmission is prone to interruption or error, resulting in the inaccurate transmission of control commands and affecting the normal operation of power equipment. The overall idea is as follows:

[0022] To address the problems existing in the prior art, this utility model provides a power line carrier communication switch control device, including a controller module, a receiving and transmitting control chip, a receiving frequency selection circuit, a transmitting frequency selection circuit, an isolation and control signal frequency selection circuit, and a power amplifier circuit. The receiving and transmitting control chip adopts half-duplex communication and outputs a transmitting signal. The transmitting frequency selection circuit, the isolation and control signal frequency selection circuit, and the power amplifier circuit amplify the transmitting signal and couple it to the power line. The controller module is an STC 12C2052 microcontroller, and the receiving and transmitting control chip is a BWP08 control chip. The receiving frequency selection circuit, the transmitting frequency selection circuit, and the isolation and control signal frequency selection circuit are LC circuits with frequency selection characteristics. The signal frequency of the selected receiving frequency selection circuit, transmitting frequency selection circuit, and isolation and control signal frequency selection circuit is (115±5) kHz. The power amplifier circuit is composed of transistors. The controller module uses an STC microcontroller. The 12C2052 microcontroller uses the BWP08 control chip for receiving and transmitting. These chips are relatively low-cost and have a stable market supply. At the same time, the common electronic components used in the circuit, such as transistors, capacitors, and resistors, are inexpensive, further reducing the overall cost. When used on a large scale, the cost advantage will be more obvious, which will help promote its use in cost-sensitive industries such as power companies.

[0023] J1 port is for connecting to a 220V socket or DC voltage circuit. C1 is a high-voltage step-down CBB capacitor. The varistor is to prevent voltage surges. The transformer's function is isolation. The winding wire can be enameled wire with a diameter less than 0.8mm. C9 is an LC circuit with certain frequency selection characteristics. C3 and R1 are the coupling capacitor and current-limiting resistor, respectively. D1 and D2 are switching diodes, which serve as amplitude limiters. L1 and C8 form a parallel frequency selection circuit for receiving signals, with a center frequency of (115±5)KHz. The serial port of the BWP08 control chip is connected to the STC... The SPI communication connection of the 12C2052 microcontroller transmits signals through the four pins of the BWP08 control chip, then through current limiting by R5, frequency selection by L2 and C11, power amplification by Q1, and finally coupling to the power line via a transformer. This completes the signal transmission. Based on the circuit diagram in the attached diagram, construct two identical circuit boards, one as power line carrier control switch one and the other as power line carrier control switch two. Connect the J1 ports of the two circuit boards with two wires. Then press switch S2 of power line carrier control circuit one and observe power line carrier control circuit two, and vice versa. If both circuits can control normally, the communication is normal. At this point, it can be connected to a 220V power supply. If power line carrier control circuit one transmits, the power line... The fact that the power carrier switch control circuit 2 is receiving normally indicates that the transmitting and receiving circuits of the power carrier switch control circuit 1 and the power carrier switch control circuit 2 are functioning correctly. Traditional manual mechanical air switches require direct human intervention and cannot be remotely controlled. However, this device uses the power line as a communication channel and, with the help of the controller module, receiving and transmitting control chips, and other components, enables remote control of the switch circuit. In practical applications, operators do not need to be physically present at the equipment site. They can remotely send signals, which are then transmitted via the power line to control the switch status, greatly improving the convenience and flexibility of operation. This device is particularly suitable for locations such as substations that require remote equipment operation, meeting the technological development needs for unmanned operation and inspection in substations.

[0024] Among them, the controller module is the core control unit, which uses an STC 12C2052 microcontroller to process various control commands and data and precisely coordinate the operation of each part of the circuit.

[0025] The receiving and transmitting control chip adopts half-duplex communication, such as the BWP08 chip, to realize the signal transmission and reception functions and ensure stable signal transmission.

[0026] The receiving frequency selection circuit is an LC circuit with frequency selection characteristics. The selected signal frequency is (115±5)KHz, which filters the received signal and improves the accuracy of communication.

[0027] The transmit frequency selection circuit is an LC circuit with frequency selection characteristics. It filters the transmit signal to ensure the accuracy of the transmit signal frequency and improve the signal transmission quality.

[0028] The isolation and control signal frequency selection circuit is an LC circuit with frequency selection characteristics. It selects the frequency and isolates the control signal, thereby enhancing signal stability and anti-interference ability.

[0029] The power amplifier circuit consists of transistors, which amplify the power of the transmitted signal, enhance the signal transmission capability on the power line, and ensure effective signal transmission.

[0030] Working principle:

[0031] J1 port is for connecting to a 220V socket or DC voltage circuit. C1 is a high-voltage step-down CBB capacitor. The varistor is to prevent voltage surges. The transformer's function is isolation. The winding wire can be enameled wire with a diameter less than 0.8mm. C9 is an LC circuit with certain frequency selection characteristics. C3 and R1 are the coupling capacitor and current-limiting resistor, respectively. D1 and D2 are switching diodes, which serve as amplitude limiters. L1 and C8 form a parallel frequency selection circuit for receiving signals, with a center frequency of (115±5)KHz. The serial port of the BWP08 control chip is connected to the STC... The SPI communication connection of the 12C2052 microcontroller transmits signals through the four pins of the BWP08 control chip, then through current limiting by R5, frequency selection by L2 and C11, power amplification by Q1, and coupling to the power line by a transformer, thus completing the signal transmission. Based on the circuit diagram in the attached diagram, fabricate two identical circuit boards, serving as power line carrier control switch one and power line carrier control switch two, respectively. Connect the J1 ports of the two circuit boards with two wires. Then press switch S2 of power line carrier control circuit one and observe power line carrier control circuit two, and vice versa. If both circuits can be controlled normally, the communication is normal. At this point, it can be connected to a 220V power supply. If power line carrier control circuit one transmits and power line carrier control circuit two receives normally, it indicates that the transmitting and receiving circuits of power line carrier control circuit one and power line carrier control circuit two are normal.

[0032] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A power line carrier communication switch control device, characterized in that, It includes a controller module, a receiving and transmitting control chip, a receiving frequency selection circuit, a transmitting frequency selection circuit, an isolation and control signal frequency selection circuit, and a power amplifier circuit; the receiving and transmitting control chip adopts half-duplex communication; The receiving and transmitting control chip outputs a transmitting signal, and the transmitting frequency selection circuit, the isolation and control signal frequency selection circuit, and the power amplification circuit amplify the transmitting signal and couple it to the power line.

2. The power line carrier communication switch control device as described in claim 1, characterized in that: The controller module is an STC 12C2052 microcontroller.

3. The power line carrier communication switch control device as described in claim 1, characterized in that: The receiving and transmitting control chip is a BWP08 type control chip.

4. The power line carrier communication switch control device as described in claim 1, characterized in that: The receiving frequency selection circuit, the transmitting frequency selection circuit, and the isolation and control signal frequency selection circuit are LC circuits with frequency selection characteristics.

5. The power line carrier communication switch control device as described in claim 1, characterized in that: The selected frequency of the receiving frequency selection circuit, the transmitting frequency selection circuit, and the isolation and control signal frequency selection circuit is (115±5)KHz.

6. The power line carrier communication switch control device as described in claim 1, characterized in that: The power amplifier circuit is composed of transistors.

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