CN211926805U - Receiving device for monitoring attitude and position of disconnecting link - Google Patents
Receiving device for monitoring attitude and position of disconnecting link Download PDFInfo
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- CN211926805U CN211926805U CN202020872427.1U CN202020872427U CN211926805U CN 211926805 U CN211926805 U CN 211926805U CN 202020872427 U CN202020872427 U CN 202020872427U CN 211926805 U CN211926805 U CN 211926805U
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Abstract
The utility model discloses a receiving device for monitoring the attitude of a disconnecting link, which comprises an MCU, a communication circuit and a relay outgoing circuit, wherein the communication circuit is connected between an attitude sensor and the MCU, and the relay outgoing circuit is connected between the MCU and a measurement and control device; the attitude sensor is arranged on the disconnecting link control lever and used for detecting attitude information of the disconnecting link control lever, transmitting the disconnecting link attitude information to the MCU through the communication circuit and then transmitting the disconnecting link attitude information to the measurement and control device through the relay switching-off circuit. The utility model is used for receive attitude sensor's data, provide the criterion for two affirmations of switch divide-shut brake position.
Description
Technical Field
The utility model relates to a primary equipment on-line monitoring technical field especially relates to a receiving arrangement for switch gesture position monitoring.
Background
The switching operation of the intelligent substation mostly adopts a one-key sequential control technology, and at least two indications of different principles or different sources are simultaneously changed when the equipment is remotely operated, so that the equipment can be confirmed to be operated in place. The first criterion of the 'double confirmation' of the disconnecting link switching-on and switching-off is to judge the position state by adopting the traditional auxiliary switch contact mode. Another non-homologous method is mainly monitoring: according to the characteristics of the transmission structure of the disconnecting link, the action characteristics of the transmission mechanism of the operating mechanism are different when the position of different disconnecting links is changed, but the main operating mechanism can show the change of the posture, so that the second judgment is mainly used for measuring the posture position of the disconnecting link.
At present, the attitude sensing technology is widely applied to the fields of aerospace, unmanned aerial vehicles, mechanical control and the like. However, the application of the attitude sensor is not available in the field of monitoring the attitude position of the disconnecting link, and the direct transmission of the data of the attitude sensor to the measurement and control device can cause a large amount of data redundancy and is not easy to realize.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to provide a receiving arrangement for switch gesture position monitoring receives attitude sensor's data, provides the criterion for two affirmations of switch divide-shut brake position.
In order to solve the technical problem, the utility model discloses a technical scheme is: a receiving device for monitoring the attitude of a disconnecting link comprises an MCU (microprogrammed control unit), a communication circuit and a relay opening circuit, wherein the communication circuit is connected between an attitude sensor and the MCU; the attitude sensor is arranged on the disconnecting link control lever and used for detecting attitude information of the disconnecting link control lever, transmitting the disconnecting link attitude information to the MCU through the communication circuit and then transmitting the disconnecting link attitude information to the measurement and control device through the relay switching-off circuit.
Furthermore, the communication circuit comprises a circuit signal interface RS485_1_ A, RS485_1_ B, a common mode inductor CL1, a 485 transceiver chip U5 and a transceiver control circuit, wherein the circuit signal interface RS485_1_ A, RS485_1_ B is connected with the attitude sensor, the circuit signal interface RS485_1_ A, RS485_1_ B is connected to a port A, B of the 485 transceiver chip U5 through the common mode inductor, a monitoring port and a transmitting port of the 485 transceiver chip U5 are respectively connected to ports UART _ RX and UART _ TX of the MCU, a control signal input end of the transceiver control circuit is connected to a GPIO port of the MCU, and a control signal output end of the transceiver control circuit is connected to a transceiver control port of the 485 transceiver chip.
Furthermore, the transceiving control circuit comprises a triode Q1, resistors R18, R15 and R20, the base electrode of the triode Q1 is connected with the GPIO port of the MCU through a resistor R20, one path of RS385_ +5V is connected to the front end of the resistor R20 through a resistor R18, the other path of RS385_ +5V is connected to the collector electrode of the triode Q1 through a resistor R15, the emitter electrode of the triode Q1 is grounded, and the collector electrode of the triode Q1 is connected to the transceiving control port of the 485 transceiving chip U5.
Further, the communication circuit further includes transient suppression diodes TVS1, TVS2 and TVS3 for preventing surge or electrostatic discharge, the transient suppression diodes TVS2 and TVS3 are respectively connected between the circuit signal interface RS485_1_ A, RS485_1_ B and ground, and the transient suppression diode TVS1 is connected between the circuit signal interface RS485_1_ A, RS485_1_ B.
Further, the relay open circuit comprises a photoelectric coupler U1 and a relay K1, an input pin 1 of the photoelectric coupler U1 is connected with an operation power supply VCC _ OP, an input pin 2 is connected with a GPIO port of the MCU, an output pin 4 of the photoelectric coupler U1 is connected with +24V, an output pin 3 of the photoelectric coupler U1 is connected with one end of a coil of the relay K1, the other end of the coil of the relay K1 is connected with GND24V, and a normally open point of the relay K1 is connected to the measurement and control device.
Further, a diode D2 is connected between an output pin 3 of the photoelectric coupler U1 and a coil of the relay K1, the anode of the diode D2 is connected with the output pin 3 of the photoelectric coupler U1, and the cathode of the diode D2 is connected with one end of the coil of the relay K1; a diode D1 is connected between two ends of the coil of the relay K1, the anode of the diode D1 is connected with one end of the coil of the relay K1 which is connected with GND24V, and the cathode of the diode D2 is connected with one end of the coil of the relay K1 which is connected with the output pin 3 of the photoelectric coupler U1.
Further, the attitude sensor is a multi-parameter attitude sensor.
Furthermore, the MCU is connected with the IEC61850 protocol conversion module through an RMII interface, and the disconnecting link posture information is sent to the auxiliary control system through the IEC61850 protocol conversion module.
The utility model has the advantages that: the utility model is used for receive the switch gesture information that attitude sensor gathered to give the system of observing and controling with switch gesture information transfer, make the system of observing and controlling can carry out two affirmations of switch divide-shut brake position, provide the criterion for two affirmations of switch divide-shut brake position promptly. On the premise of not influencing the performance of equipment, monitoring signals are transmitted to a receiving device in a mode of mounting an attitude sensor on a disconnecting link control lever, and a non-homologous disconnecting link switching-on and switching-off position monitoring mode is realized. And the system is combined with the contact criterion of the traditional auxiliary switch to form a 'double confirmation' system for the opening and closing positions of the disconnecting link. The utility model discloses use various types of switch equipment, the commonality is good, and it is convenient to maintain to anti-electromagnetic interference, the field operation is stable.
Drawings
FIG. 1 is a schematic block diagram of a knife-switch position double confirmation system;
FIG. 2 is a schematic block diagram of a receiving device according to an embodiment;
FIG. 3 is a circuit schematic of a communication circuit;
fig. 4 is a circuit schematic diagram of the relay open circuit.
Detailed Description
The invention will be further described with reference to the accompanying drawings and specific embodiments.
Example 1
The embodiment discloses a receiving arrangement for monitoring of switch gesture position, this receiving arrangement is used for the two system of affirming of switch position, as shown in fig. 1, the two system of affirming of switch position includes isolator, switch gesture sensor, receiving arrangement, measurement and control device and III district's auxiliary control system, first criterion is directly transmitted to measurement and control device by isolator, the second criterion is gathered by switch gesture sensor, switch gesture sensor installs on the switch control rod, with the switch gesture information transmission of gathering to receiving arrangement, receiving arrangement output passive node to measurement and control device, carry out the two affirmations of switch position for measurement and control device and provide the second criterion. Meanwhile, the received state uploads the position information of the disconnecting link posture to a background auxiliary control system in the III area through RS-485 or IEC 61850.
As shown in fig. 2, the receiving device includes an MCU, a communication circuit and a relay open circuit, the communication circuit is connected between the attitude sensor and the MCU, and the relay open circuit is connected between the MCU and the measurement and control device; meanwhile, the MCU is connected with the state indicating lamp through the GPIO port and connected with the debugging interface and the information transmission interface through the RS485 interface.
As shown in fig. 3, the communication circuit includes a circuit signal interface RS485_1_ A, RS485_1_ B, a common mode inductor CL1, a 485 transceiver chip U5, and a transceiver control circuit, the circuit signal interface RS485_1_ A, RS485_1_ B is connected to the attitude sensor, the circuit signal interface RS485_1_ A, RS485_1_ B is connected to a port A, B of the 485 transceiver chip U5 through the common mode inductor, a monitoring port RO and a transmitting port DI of the 485 transceiver chip U5 are respectively connected to a UART _ RX and UART _ TX of the MCU, a control signal input end of the transceiver control circuit is connected to a GPIO port of the MCU, and a control signal output end is connected to transceiver control ports RE and DE of the 485 transceiver chip.
In this embodiment, the transceiving control circuit includes a transistor Q1, resistors R18, R15, and R20, a base of the transistor Q1 is connected to a GPIO port of the MCU through a resistor R20, one path of RS385_ +5V is connected to a front end of the resistor R20 through a resistor R18, one path of RS385_ +5V is connected to a collector of the transistor Q1 through a resistor R15, an emitter of the transistor Q1 is grounded, and a collector of the transistor Q1 is connected to a transceiving control port of the 485 transceiving chip U5. In this embodiment, the transistor Q1 is used to control the monitoring or transmitting state, the monitoring state is when the MCU outputs a high level, and the transmitting state is when the MCU outputs a low level.
In this embodiment, the communication circuit further includes transient suppression diodes TVS1, TVS2, and TVS3 for preventing surge or electrostatic discharge, the transient suppression diodes TVS2 and TVS3 are respectively connected between the circuit signal interface RS485_1_ A, RS485_1_ B and ground, and the transient suppression diode TVS1 is connected between the circuit signal interface RS485_1_ A, RS485_1_ B.
According to the communication circuit, the anti-interference capability is enhanced through the TVS diode, damage to the circuit caused by surge or electrostatic discharge is prevented, and stable communication is kept. The common mode inductor CL1 is used to suppress common mode interference. R14 is a line termination matching resistor.
As shown in fig. 4, the relay open circuit includes a photocoupler U1 and a relay K1, an input pin 1 of the photocoupler U1 is connected with an operating power VCC _ OP, an input pin 2 is connected with a GPIO port of the MCU, an output pin 4 of the photocoupler U1 is connected with +24V, an output pin 3 of the photocoupler U1 is connected to one end of a coil of the relay K1, the other end of the coil of the relay K1 is connected with a GND24V, and a normally open point of the relay K1 is connected to the measurement and control device.
In order to prevent current backflow, a diode D2 is connected between an output pin 3 of the photoelectric coupler U1 and a coil of the relay K1, the anode of the diode D2 is connected with the output pin 3 of the photoelectric coupler U1, and the cathode of the diode D2 is connected with one end of the coil of the relay K1; a diode D1 is connected between two ends of the coil of the relay K1, the anode of the diode D1 is connected with one end of the coil of the relay K1 which is connected with GND24V, and the cathode of the diode D2 is connected with one end of the coil of the relay K1 which is connected with the output pin 3 of the photoelectric coupler U1.
In the embodiment, the attitude sensor adopts the existing multi-parameter attitude sensor, the inside of the attitude sensor comprises an inertial unit and a magnetic sensor, a Kalman filtering algorithm is embedded inside the attitude sensor, accurate information such as a course angle, a pitch angle and a roll angle is provided, the resolution ratio is 0.01 degree, and internal self-calibration can be carried out. The measurement range of the pitch angle/the roll angle is-360 degrees to +360 degrees; the measurement range of the course angle is-720 to +720 degrees.
In this embodiment, the MCU is connected to the IEC61850 protocol conversion module through the RMII interface, and the knife switch posture information is sent to the auxiliary control system through the IEC61850 protocol conversion module.
The utility model is used for receive the switch gesture information that attitude sensor gathered to give the system of observing and controling with switch gesture information transfer, make the system of observing and controlling can carry out two affirmations of switch divide-shut brake position, provide the criterion for two affirmations of switch divide-shut brake position promptly. On the premise of not influencing the performance of equipment, monitoring signals are transmitted to a receiving device in a mode of mounting an attitude sensor on a disconnecting link control lever, and a non-homologous disconnecting link switching-on and switching-off position monitoring mode is realized. And the system is combined with the contact criterion of the traditional auxiliary switch to form a 'double confirmation' system for the opening and closing positions of the disconnecting link. The utility model discloses use various types of switch equipment, the commonality is good, and it is convenient to maintain to anti-electromagnetic interference, the field operation is stable.
The foregoing description is only for the basic principles and preferred embodiments of the present invention, and modifications and substitutions made by those skilled in the art according to the present invention belong to the protection scope of the present invention.
Claims (8)
1. A receiving arrangement for switch gesture monitoring which characterized in that: the system comprises an MCU, a communication circuit and a relay opening circuit, wherein the communication circuit is connected between an attitude sensor and the MCU; the attitude sensor is arranged on the disconnecting link control lever and used for detecting attitude information of the disconnecting link control lever, transmitting the disconnecting link attitude information to the MCU through the communication circuit and then transmitting the disconnecting link attitude information to the measurement and control device through the relay switching-off circuit.
2. The receiver for knife switch attitude monitoring of claim 1, wherein: the communication circuit comprises a circuit signal interface RS485_1_ A, RS485_1_ B, a common mode inductor CL1, a 485 transceiver chip U5 and a transceiver control circuit, wherein the circuit signal interface RS485_1_ A, RS485_1_ B is connected with an attitude sensor, the circuit signal interface RS485_1_ A, RS485_1_ B is connected to a port A, B of the 485 transceiver chip U5 through the common mode inductor, a monitoring port and a transmitting port of the 485 transceiver chip U5 are respectively connected to a UART _ RX and a UART _ TX of an MCU, a control signal input end of the transceiver control circuit is connected with a GPIO port of the MCU, and a control signal output end of the transceiver control circuit is connected to a transceiver control port of the 485 transceiver chip.
3. The receiver for knife switch attitude monitoring of claim 2, wherein: the transceiving control circuit comprises a triode Q1, resistors R18, R15 and R20, the base electrode of the triode Q1 is connected with a GPIO port of the MCU through a resistor R20, one path of RS385_ +5V is connected to the front end of the resistor R20 through a resistor R18, the other path of RS385_ +5V is connected to the collector electrode of a triode Q1 through a resistor R15, the emitter electrode of the triode Q1 is grounded, and the collector electrode of the triode Q1 is connected to a transceiving control port of a 485 transceiving chip U5.
4. The receiver for knife switch attitude monitoring of claim 2, wherein: the communication circuit further comprises transient suppression diodes TVS1, TVS2 and TVS3 for preventing surge or electrostatic discharge, wherein the transient suppression diodes TVS2 and TVS3 are respectively connected between the circuit signal interface RS485_1_ A, RS485_1_ B and the ground, and the transient suppression diode TVS1 is connected between the circuit signal interface RS485_1_ A, RS485_1_ B.
5. The receiver for knife switch attitude monitoring of claim 1, wherein: the circuit is opened out to the relay includes optoelectronic coupler U1 and relay K1, the input pin 1 of optoelectronic coupler U1 connects operation power VCC _ OP, the GPIO mouth of MCU is connected to input pin 2, +24V is connected to optoelectronic coupler U1's output pin 4, optoelectronic coupler U1's output pin 3 is connected to the one end of relay K1 coil, GND24V is connected to the other end of relay K1 coil, relay K1 normally open point is connected to measurement and control device.
6. The receiver for knife switch attitude monitoring of claim 5, wherein: a diode D2 is connected between the output pin 3 of the photoelectric coupler U1 and the coil of the relay K1, the anode of the diode D2 is connected with the output pin 3 of the photoelectric coupler U1, and the cathode of the diode D2 is connected with one end of the coil of the relay K1; a diode D1 is connected between two ends of the coil of the relay K1, the anode of the diode D1 is connected with one end of the coil of the relay K1 which is connected with GND24V, and the cathode of the diode D2 is connected with one end of the coil of the relay K1 which is connected with the output pin 3 of the photoelectric coupler U1.
7. The receiver for knife switch attitude monitoring of claim 1, wherein: the attitude sensor is a multi-parameter attitude sensor.
8. The receiver for knife switch attitude monitoring of claim 1, wherein: the MCU is connected with the IEC61850 protocol conversion module through the RMII interface, and the disconnecting link posture information is sent to the auxiliary control system through the IEC61850 protocol conversion module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020872427.1U CN211926805U (en) | 2020-05-22 | 2020-05-22 | Receiving device for monitoring attitude and position of disconnecting link |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020872427.1U CN211926805U (en) | 2020-05-22 | 2020-05-22 | Receiving device for monitoring attitude and position of disconnecting link |
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| Publication Number | Publication Date |
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| CN211926805U true CN211926805U (en) | 2020-11-13 |
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| CN202020872427.1U Active CN211926805U (en) | 2020-05-22 | 2020-05-22 | Receiving device for monitoring attitude and position of disconnecting link |
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| CN (1) | CN211926805U (en) |
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Effective date of registration: 20221009 Address after: 16th Floor, Building 5, District 5, Hanyu Financial Business Center, High-tech Zone, Jinan City, Shandong Province, 250000 Patentee after: SHANDONG ELECTRICAL ENGINEERING & EQUIPMENT GROUP Co.,Ltd. Patentee after: Shandong Electric Group Digital Technology Co.,Ltd. Address before: 250101 No.16 Chonghua Road, high tech Development Zone, Jinan City, Shandong Province Patentee before: SHANDONG ELECTRICAL ENGINEERING & EQUIPMENT GROUP Co.,Ltd. |