CN219351263U - Microcomputer relay protector - Google Patents
Microcomputer relay protector Download PDFInfo
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- CN219351263U CN219351263U CN202320192769.2U CN202320192769U CN219351263U CN 219351263 U CN219351263 U CN 219351263U CN 202320192769 U CN202320192769 U CN 202320192769U CN 219351263 U CN219351263 U CN 219351263U
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- relay
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Abstract
The utility model discloses a microcomputer relay protector, which comprises a square shell, wherein a main control chip is integrated on a main control circuit board, an electric parameter acquisition circuit board is connected with a relay opening circuit board through the main control chip in an electric signal mode, a tripping control circuit board is connected with a signal input end of the main control chip, the main control circuit board is fixed on the inner side of a panel of the shell, and the electric parameter acquisition circuit board, the relay opening circuit board and the tripping control circuit board are arranged in the shell at intervals in parallel and perpendicular to the main control circuit board. Compared with the prior art, the circuit structure in the shell is optimally designed, the circuit boards are convenient to connect, the external terminals are all concentrated on the back plate, the interface connection is convenient, the circuit interference among the circuit boards can be avoided, the real-time acquisition and detection of the diversification of the electric parameters are realized, the operation reliability is improved, the signal relay loop disconnection detection circuit is increased, and the signal relay loop disconnection detection circuit is warned through the indicator lamp to avoid misoperation.
Description
Technical Field
The utility model relates to the field of electrical control, in particular to a microcomputer relay protector.
Background
The existing microcomputer relay protector mainly comprises a main control circuit board, an electric parameter acquisition circuit board and a relay opening circuit board, and because the circuit boards are required to be connected through wires in an interfacing mode, the circuit is more, the circuit structure and the installation fixing position of the circuit boards are required to be optimally designed, otherwise, the problems that the connection of internal interface wires is disordered, interfaces are easy to loosen, circuit interference is easy to form between the circuit boards, the size of the assembled product is large and the like can occur.
The signal relay circuit in the microcomputer relay protector is in a normally open state, and if the circuit of the signal relay is broken, the main control chip cannot normally open signals, so that misoperation can be formed.
Disclosure of Invention
The utility model aims to provide a microcomputer relay protector which solves the problems.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: the utility model provides a microcomputer relay protector, includes square casing, be equipped with main control circuit board, electric parameter acquisition circuit board, relay and open circuit board and tripping control circuit board in the casing, the last main control chip that has of main control circuit board, electric parameter acquisition circuit board passes through main control chip and relay and opens circuit board electrical signal connection, tripping control circuit board is connected with main control chip's signal input part, main control circuit board is fixed in the panel inboard of casing, electric parameter acquisition circuit board, relay open circuit board and tripping control circuit board parallel interval set up in the casing, and with main control circuit board looks vertically.
Preferably, the inner walls of the side plates of the shell are provided with circuit board clamping grooves at intervals, and the electric parameter acquisition circuit board, the relay opening circuit board and the tripping control circuit board are clamped in the shell in parallel.
Preferably, a display screen, a control switch and a status indicator lamp are arranged on the panel of the shell, and the display screen, the control switch and the status indicator lamp are electrically connected with the main control chip.
Preferably, the electric parameter acquisition circuit board is integrated with a signal acquisition terminal, the relay opening circuit board is integrated with a relay wiring terminal, the tripping control circuit board is integrated with a circuit wiring terminal, and the backboard of the shell is provided with a notch matched with the signal acquisition terminal, the relay wiring terminal and the circuit wiring terminal.
Preferably, the master control chip adopts an STM32 chip.
Preferably, the electric parameter acquisition circuit board adopts 13 paths of current and voltage acquisition modules and 1 group of communication interface modules, and the signal output end of the electric parameter acquisition circuit board is communicated with the signal input end of a main control chip on the main control circuit board through a hub, and the signal input end of the electric parameter acquisition circuit board is communicated with the signal acquisition terminal.
Preferably, the relay opening circuit board is integrated with a device power supply circuit, a switch input quantity circuit I and an 8-way relay switch circuit, the signal output ends of the device power supply circuit and the switch input quantity circuit I are communicated with the signal input end of the main control chip, the signal input end of the main control chip is communicated with the relay wiring terminal, and the signal output end of the main control chip is communicated with the relay wiring terminal through the 8-way relay switch circuit.
Preferably, the tripping control loop circuit board is integrated with a switch input quantity circuit II, a signal relay loop disconnection detection circuit and 11 tripping control loop circuits, wherein the signal output ends of the switch input quantity circuit II, the signal relay loop disconnection detection circuit and the 11 tripping control loop circuits are communicated with the signal input end of the main control chip, and the signal input ends of the switch input quantity circuit II, the signal relay loop disconnection detection circuit and the 11 tripping control loop circuits are communicated with the loop wiring terminals.
Compared with the prior art, the utility model has the advantages that:
(1) The utility model optimizes the circuit structure in the shell, is convenient for connecting the electric parameter acquisition circuit board, the relay opening circuit board and the tripping control circuit board with the main control circuit board, has a plurality of external terminals, can be fully concentrated on the backboard, is convenient for interface connection, and can avoid the circuit interference between the circuit boards.
(2) The utility model realizes the real-time acquisition and detection of the electrical parameters in a diversified way, adopts the hub to connect the electrical parameter acquisition circuit board and the main control circuit board, realizes the centralized transmission of the electrical parameters, avoids the loss of data, ensures that the connection between the electrical parameter acquisition circuit board and the main control circuit board is more reliable, and improves the operation reliability.
(3) According to the utility model, the signal relay circuit disconnection detection circuit is added, whether the output circuit of the signal relay is in a normally open state or in a disconnection state is detected, if the main control chip detects that the signal relay circuit is disconnected through the connected electric signal, the signal relay circuit is warned through the indicator lamp, a worker firstly overhauls the signal relay output circuit after seeing that the corresponding indicator lamp is on, and then signals are sent out through the relay protector, so that misoperation is avoided.
Drawings
FIG. 1 is a schematic view of the external structure of the present utility model;
FIG. 2 is a schematic view of the internal structure of the present utility model;
FIG. 3 is a schematic view of the back structure of the present utility model;
FIG. 4 is a schematic diagram of a main control circuit board according to the present utility model;
FIG. 5 is a schematic view of a relay open circuit board according to the present utility model;
fig. 6 is a schematic structural view of a trip control loop circuit board of the present utility model;
FIG. 7 is a schematic diagram of an electrical parameter acquisition circuit board according to the present utility model;
FIG. 8 is a schematic diagram of an interface of a relay terminal of the present utility model;
FIG. 9 is a schematic diagram of an interface of the loop terminal of the present utility model;
FIG. 10 is a schematic diagram of an interface of a signal acquisition terminal according to the present utility model;
fig. 11, 12, 13 are schematic diagrams of secondary wiring of the present utility model.
1, a shell; 2. a display screen; 3. a control switch; 4. status indicator lights; 5. a main control circuit board; 6. the relay is opened out of the circuit board; 7. a trip control loop circuit board; 8. an electrical parameter acquisition circuit board; 9. relay terminals; 10. a loop connection terminal; 11. a signal acquisition terminal; 12. a circuit board clamping groove; 13. and (5) a notch.
Detailed Description
The present utility model will be further described below.
Examples: the utility model provides a microcomputer relay protector, see fig. 1 through 10, includes square casing 1, comprises panel, backplate and curb plate all around, be equipped with master control circuit board 5, electric parameter acquisition circuit board 8, relay and open circuit board 6 and tripping control circuit board 7 in the casing 1, the last main control chip that has integrated of master control circuit board 5, electric parameter acquisition circuit board 8 passes through main control chip and is connected with the electric signal of relay and opens circuit board 6, tripping control circuit board 7 is connected with main control chip's signal input part, master control circuit board 5 is fixed in the panel inboard of casing 1, electric parameter acquisition circuit board 8, relay open circuit board 6 and tripping control circuit board 7 parallel interval set up in casing 1, and perpendicular mutually with master control circuit board 5.
The microcomputer relay protector is the same as the existing microcomputer relay protector in that the electric parameter acquisition circuit board 8 is used for carrying out electric parameter acquisition on the end to be detected, the main control chip in the main control circuit board 5 is used for comparing the electric parameter acquisition with the preset threshold value, and the relay is used for opening the circuit board 6 to send a signaling instruction to open and close the terminal equipment (the vacuum circuit breaker) so as to ensure the equipment safety. The circuit structure in the casing 1 is optimally designed, the circuit board is divided into a main control circuit board 5, an electric parameter acquisition circuit board 8, a relay opening circuit board 6 and a tripping control circuit board 7, the main control circuit board 5 is horizontally laid and is arranged on the inner side of a panel, the other three boards are vertically arranged, the electric parameter acquisition circuit board 8, the relay opening circuit board 6 and a signal connecting line on the tripping control circuit board 7 are connected with the main control circuit board 5, the interface is very convenient to plug, the electric parameter acquisition circuit board 8, the relay opening circuit board 6 and the external input and output ends on the tripping control circuit board 7 are many, the electric parameter acquisition circuit board 8, the relay opening circuit board 6 and the tripping control circuit board 7 can be fully concentrated on the backboard, the interface connection is facilitated, and the three boards of the electric parameter acquisition circuit board 8, the relay opening circuit board 6 and the tripping control circuit board 7 are arranged at parallel intervals, so that circuit interference among the circuit boards is avoided.
The circuit board clamping grooves 12 are formed in the inner walls of the side plates of the shell 1 at intervals, the electric parameter acquisition circuit board 8, the relay opening circuit board 6 and the tripping control circuit board 7 are clamped in the shell 1 in parallel, and the electric parameter acquisition circuit board 8, the relay opening circuit board 6 and the tripping control circuit board 7 are clamped in the shell 1 through the circuit board clamping grooves 12, so that the circuit board is fixed in the shell 1 and has a good stable structure and is not easy to loosen.
The display screen 2, the control switch 3 and the status indicator lamp 4 are installed on the panel of the shell 1, the display screen 2, the control switch 3 and the status indicator lamp 4 are electrically connected with the main control chip, the display screen 2 displays data, the control switch 3 relay protector is controlled by the switch, and the status indicator lamp 4 is used for status indication and warning.
The electric parameter acquisition circuit board 8 is integrated with a signal acquisition terminal 11, the relay opening circuit board 6 is integrated with a relay wiring terminal 9, the tripping control circuit board 7 is integrated with a circuit wiring terminal 10, and a notch 13 matched with the signal acquisition terminal 11, the relay wiring terminal 9 and the circuit wiring terminal 10 is formed in the backboard of the casing 1. Because the access signal and the trip signal on electric parameter acquisition circuit board 8, relay trip circuit board 6 and tripping control circuit board 7 are many, corresponding acquisition terminal or binding post have been integrated on corresponding circuit board to integrate the processing, simultaneously because the structure setting of circuit board in casing 1, signal acquisition terminal 11, relay binding post 9, return circuit binding post 10 can all integrate on casing 1 backplate, the staff of being convenient for carries out wiring operation, the wiring winding displacement of relay protector all is located the back, it is clean and tidy more, the relay protector is also convenient for walk the line from the back when installing in the electrical control cabinet.
The master control chip adopts an STM32 chip, and the STM32 chip is an inlet 104 pin chip, can be used for centralized processing of receiving and transmitting signals, and has the characteristics of high performance and good compatibility. The operation of the main control chip is the same as that of the main control chip of the traditional relay protector, except that the collected data are monitored and displayed, when the collected electric signals exceed a set threshold value, a relay switch instruction is issued to the terminal equipment through the relay switch output circuit board 6, so that the terminal equipment makes corresponding actions.
The electric parameter acquisition circuit board 8 adopts 13 paths of current and voltage acquisition modules and 1 group of RS485 communication interface modules, the electric parameter acquisition circuit board 8 is existing, the signal output end of the electric parameter acquisition circuit board 8 is communicated with the signal input end of a main control chip on the main control circuit board through a hub, and the signal input end is communicated with a signal acquisition terminal
In order to realize real-time acquisition and detection of electric parameters in a diversified way, the 13-path current and voltage acquisition module comprises a three-phase protection current acquisition circuit, a zero sequence current acquisition circuit, a three-phase voltage measurement acquisition circuit, a zero sequence voltage acquisition circuit, a low-voltage zero sequence current acquisition circuit, a three-phase measurement current acquisition circuit and all acquisition circuits which are connected with a main control chip through a hub in an electric signal manner. The RS485 communication interface module is an RS485 communication interface circuit. Because the electric parameters acquired by the electric parameter acquisition circuit board 8 are more, the electric parameter acquisition circuit board 8 and the main control circuit board 5 are connected by adopting the concentrator, so that the centralized transmission of signals at the output end is realized, the interface is not easy to loose due to a more stable socket connection structure, the data loss or interface connection confusion can be avoided, and the connection between the electric parameter acquisition circuit board 8 and the main control circuit board 5 is more reliable.
The relay switch-out circuit board 6 is integrated with a device power supply circuit, a switch input quantity circuit I and an 8-way relay switch circuit, the signal output ends of the device power supply circuit and the switch input quantity circuit I are communicated with the signal input end of the main control chip, the signal input end of the main control chip is communicated with the relay wiring terminal 9, and the signal output end of the main control chip is communicated with the relay wiring terminal 9 through the 8-way relay switch circuit. The relay opening circuit board 6 is mainly responsible for receiving the opening of the main control chip instruction.
The device power supply circuit is an AC/DC power supply circuit, and is electrically connected with the main control chip to supply power for the circuits in the microcomputer relay protector.
The switch input quantity circuit I can be divided into a breaker state interface circuit, a handcart working position interface circuit, a handcart experiment position interface circuit, a spring non-energy-storage interface circuit, a grounding switch interface circuit and an open-in public interface circuit according to different input quantities. The switch input quantity circuit I is connected with the signal input end of the main control chip through the interface circuit and provides a switch quantity signal of the end to be detected for the main control chip.
The 8-way relay switch circuit comprises a protection relay switch circuit, a signal relay circuit, a remote control relay circuit and an anti-tripping relay circuit. The 8-way relay switch circuit is connected with the signal output end of the main control chip and transmits a switch signal to the vacuum circuit breaker of the terminal equipment.
Unlike available relay protector, the relay has 6 kinds of signal relay circuits in normally opened state, and the signal relay has broken circuit, so that the main control chip can not normally open signal, and the present utility model has one trip control circuit board 7 with integrated switch input amount circuit II, signal relay circuit broken circuit detecting circuit and 11 trip control circuit, with the signal output ends of the switch input amount circuit II, signal relay circuit broken circuit detecting circuit and 11 trip control circuit being connected to the signal input end of the main control chip and the signal input ends of the switch input amount circuit II, signal relay circuit broken circuit detecting circuit and 11 trip control circuit being connected to the circuit connecting terminal 10.
The switch input quantity circuit II can be divided into a light gas alarm interface circuit, a heavy gas tripping interface circuit, a high-temperature alarm interface circuit, an overtemperature tripping interface circuit, a door opening tripping interface circuit and a remote control permission interface circuit according to different input quantities. The switch input quantity circuit II is connected with the signal input end of the main control chip through the interface circuit, provides a switch quantity signal for the main control chip, and the main control chip displays the switch quantity signal through the display screen 2 or the status indicator lamp 4.
The signal relay circuit disconnection detection circuit is a current voltage sampling circuit, in the normal working process, the signal relay circuit is in a normally open state, the relay protector can carry out correct issuing of a switching signal of the vacuum circuit breaker, if the circuit of the signal relay is in a disconnection condition, a main control chip cannot normally open the signal, and misoperation can be formed.
According to the requirement of the tripping and closing contact circuit, the 11-way tripping control circuit can be divided into a negative control parent-KM circuit, a remote control closing circuit, a reclosing circuit, a manual closing circuit, a tripping coil circuit, a TWJ negative end circuit, a positive control parent +KM circuit, a remote control tripping circuit, a protection tripping circuit, a manual tripping circuit and a tripping coil circuit. Each tripping and closing loop is connected through the main control chip through an electric signal, the main control chip compares signal parameters of each loop, and the tripping and closing signals exceeding a set threshold value are issued.
The utility model can be used for relay protection cabinets of 6KV-35KV power companies/real estate companies/workshops, and secondary wiring diagrams thereof are shown in fig. 11 to 13.
The microcomputer relay protector provided by the utility model is described in detail, and specific examples are applied to illustrate the principle and the implementation of the utility model, and the description of the examples is only used for helping to understand the method and the core idea of the utility model; also, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made herein without departing from the spirit and scope of the utility model as defined by the appended claims.
Claims (8)
1. A microcomputer relay protector is characterized in that: including square casing, be equipped with main control circuit board, electric parameter acquisition circuit board, relay and open circuit board and tripping control circuit board in the casing, the last main control chip that has of main control circuit board, electric parameter acquisition circuit board passes through main control chip and relay and opens circuit board electrical signal connection, tripping control circuit board is connected with main control chip's signal input part, main control circuit board is fixed in the panel inboard of casing, electric parameter acquisition circuit board, relay open circuit board and tripping control circuit board parallel interval set up in the casing, and mutually perpendicular with main control circuit board.
2. The microcomputer relay protector according to claim 1, wherein: the circuit board clamping grooves are formed in the inner walls of the side plates of the shell at intervals, and the electric parameter acquisition circuit board, the relay tripping circuit board and the tripping control circuit board are clamped in the shell in parallel.
3. The microcomputer relay protector according to claim 1, wherein: the panel of the shell is provided with a display screen, a control switch and a status indicator lamp, and the display screen, the control switch and the status indicator lamp are electrically connected with the main control chip.
4. A microcomputer relay protector according to claim 3, characterized in that: the circuit board is integrated with a signal acquisition terminal, the relay opening circuit board is integrated with a relay wiring terminal, the tripping control circuit board is integrated with a circuit wiring terminal, and a notch matched with the signal acquisition terminal, the relay wiring terminal and the circuit wiring terminal is formed in the backboard of the shell.
5. The microcomputer relay protector according to claim 4, wherein: and the master control chip adopts an STM32 chip.
6. The microcomputer relay protector according to claim 4, wherein: the electric parameter acquisition circuit board adopts 13 paths of current and voltage acquisition modules and 1 group of communication interface modules, and the signal output end of the electric parameter acquisition circuit board is communicated with the signal input end of a main control chip on the main control circuit board through a hub, and the signal input end of the electric parameter acquisition circuit board is communicated with the signal acquisition terminal.
7. The microcomputer relay protector according to claim 4, wherein: the relay switch-out circuit board is integrated with a device power supply circuit, a switch input quantity circuit I and an 8-way relay switch circuit, the signal output ends of the device power supply circuit and the switch input quantity circuit I are communicated with the signal input end of the main control chip, the signal input end of the main control chip is communicated with the relay wiring terminal, and the signal output end of the main control chip is communicated with the relay wiring terminal through the 8-way relay switch circuit.
8. The microcomputer relay protector according to claim 7, wherein: the tripping control loop circuit board is integrated with a switch input quantity circuit II, a signal relay loop disconnection detection circuit and an 11-way tripping control loop circuit, wherein the signal output ends of the switch input quantity circuit II, the signal relay loop disconnection detection circuit and the 11-way tripping control loop circuit are communicated with the signal input end of the main control chip, and the signal input ends of the switch input quantity circuit II, the signal relay loop disconnection detection circuit and the 11-way tripping control loop circuit are communicated with the loop wiring terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320192769.2U CN219351263U (en) | 2023-02-02 | 2023-02-02 | Microcomputer relay protector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320192769.2U CN219351263U (en) | 2023-02-02 | 2023-02-02 | Microcomputer relay protector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219351263U true CN219351263U (en) | 2023-07-14 |
Family
ID=87102483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320192769.2U Active CN219351263U (en) | 2023-02-02 | 2023-02-02 | Microcomputer relay protector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219351263U (en) |
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2023
- 2023-02-02 CN CN202320192769.2U patent/CN219351263U/en active Active
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