CN209982457U - Grounding wire hanging and dismounting wireless acquisition electronic switch isolation system - Google Patents
Grounding wire hanging and dismounting wireless acquisition electronic switch isolation system Download PDFInfo
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- CN209982457U CN209982457U CN201920525943.4U CN201920525943U CN209982457U CN 209982457 U CN209982457 U CN 209982457U CN 201920525943 U CN201920525943 U CN 201920525943U CN 209982457 U CN209982457 U CN 209982457U
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Abstract
The utility model discloses a ground wire is hung and is torn wireless collection electronic switch isolated system and working method thereof, gather ground wire real-time status through ground wire state collection system, transmit intelligent ground wire electronic switch contact output device with the ground wire state through wired or wireless transmission mode, intelligent ground wire electronic switch contact output device is through electronic switch output +24V voltage or do not have "0" and "1" of two kinds of states analog data communication of output, describe out ground wire string respectively and tear state and ground wire stake number information and send and prevent mistake host computer. The one-way transmission requirement of data communication is met, the isolation of electronic switches among devices is guaranteed, and the communication data information is highly safe.
Description
Technical Field
The utility model belongs to the power management system field relates to a wireless collection electronic switch isolated system is torn open to earth connection string.
Background
An electric power temporary grounding wire is a safety appliance for electric power production. Because it has low cost, the principle is simple reliable, uses advantages such as simple operation, is used for carrying out ground protection to the equipment or the circuit of overhauing at present by the wide application in power equipment's maintenance operation for prevent that unexpected incoming call from causing personnel's injury or equipment to damage. However, due to the portability and the temporary property of the temporary grounding wire hanging connection, the temporary grounding wire is easy to be hung or detached, so that the casualty accident is caused. The key point is to reliably realize the automatic acquisition of the hanging/dismantling state of the temporary grounding wire in order to prevent or stop the occurrence of violation conditions in technical means. According to the hanging/dismantling state and the anti-misoperation logic of the temporary grounding wire, the temporary grounding wire can be prevented from being hung or dismantled in a missing way through a microcomputer anti-misoperation locking technical means, so that misoperation accidents related to the temporary grounding wire can be avoided.
The conventional method for automatically acquiring the hanging/dismantling state of the temporary grounding wire is to connect and communicate with the anti-misoperation host through the acquisition controller to realize the transmission of the state data of the grounding wire, namely, the acquisition controller and the anti-misoperation host directly perform data interaction. The system and the method have the disadvantage that the system cannot meet the high security requirement in the aspect of network information security. Another method is to install a reverse physical isolation device between the acquisition controller and the anti-error host to meet the requirement of the user on network security, but the physical isolation device is very expensive.
The above two systems and methods have the disadvantage of low security or high cost. Therefore, the isolation system of the wireless acquisition electronic switch with low cost and high reliability for the ground wire to be hung and dismantled is provided.
SUMMERY OF THE UTILITY MODEL
The utility model provides a ground wire hanging and detaching wireless collection electronic switch isolation system, which comprises an error-proof host, an intelligent ground wire electronic switch contact input device, an intelligent ground wire electronic switch contact output device and a ground wire state collection device, wherein the ground wire state collection device and the intelligent ground wire electronic switch contact output device are respectively provided with a communication unit, so that the ground wire state collection device can transmit ground wire state data to the intelligent ground wire electronic switch contact output device, the intelligent ground wire electronic switch contact output device comprises a MCU and an electronic switch, so that the intelligent ground wire electronic switch contact output device can convert the collected ground wire state data into electronic switch contact output, the intelligent ground wire electronic switch contact input device communicates with the intelligent ground wire electronic switch contact output device and the error-proof host through the communication unit, so that the intelligent ground wire electronic switch contact input device receives the ground wire state data from the intelligent ground wire electronic switch contact output device and transmits the ground wire state data to the anti-misoperation host.
According to the utility model discloses a wireless collection electronic switch isolated system is torn open to earth connection string, ground wire state data includes that the ground wire hangs tears state data and ground wire stake number information data open.
According to the utility model discloses a wireless collection electronic switch isolated system is torn open to earth connection string, intelligence ground wire electronic switch contact input device includes that the ground wire hangs the state of tearing open and opens into return circuit terminal and ground wire stake number information and open into return circuit terminal, gather by the ground wire that intelligence ground wire electronic switch contact output device provided hangs state of tearing open and ground wire stake number information data.
According to the utility model discloses a wireless collection electronic switch isolated system is torn open to earth connection string, intelligence earth wire electronic switch contact output device includes that the earth wire is hung and is torn open the state and open return circuit terminal and the return circuit terminal is opened to earth wire stake number information.
According to the utility model discloses a wireless collection electronic switch isolated system is torn open to earth connection string, the earth connection string state of tearing open is opened return circuit and earth wire pile number information and is opened the return circuit and adopt electronic switch.
According to the utility model discloses a wireless collection electronic switch isolated system is torn open to earth connection string, electronic switch includes zener diode, triode, MOS pipe and resistance-capacitance circuit, through by electronic switch output +24V voltage or no output realize the transmission of ground wire state.
According to the utility model discloses a wireless collection electronic switch isolated system is torn open to earth connection string, through MCU's among the intelligence ground wire electronic switch contact output device IO output level control electronic switch output +24V voltage or no output.
According to the utility model discloses a wireless collection electronic switch isolated system is torn open to earth connection string, the drain electrode series connection forward diode of MOS pipe in the electronic switch.
According to the utility model discloses a wireless collection electronic switch isolated system is torn open to earth connection string, intelligence ground wire electronic switch contact output device uses an arbitrary electronic switch contact in 1 bit to 6 bit electronic switch contacts to describe the state of tearing open of hanging of ground wire.
According to the utility model discloses a wireless collection electronic switch isolated system is torn open to earth connection string, intelligence earth wire electronic switch contact output device uses 3 position electronic switch contacts to describe the state of tearing open of hanging of earth wire.
According to the utility model discloses a wireless collection electronic switch isolated system is torn open to earth connection string, intelligence earth wire electronic switch contact output device uses 6 at least electronic switch contacts to describe the ground wire pile number information.
According to the utility model discloses a wireless collection electronic switch isolated system is torn open to earth connection string, intelligence earth wire electronic switch contact output device uses 12 electronic switch contacts to describe the ground wire stake number information.
According to the utility model discloses a wireless collection electronic switch isolated system is torn open to earth connection string, including preventing mistake host computer, intelligent ground wire electronic switch contact input device, intelligent ground wire electronic switch contact output device, ground wire state collection system with intelligence ground wire electronic switch contact output device has the communication unit that can communicate each other separately, intelligence ground wire electronic switch contact output device includes MCU and electronic switch, intelligence ground wire electronic switch contact input device with intelligence ground wire electronic switch contact output device and prevent that the mistake host computer all has the communication unit that can communicate each other.
The utility model has the advantages that:
the technical scheme of the utility model use have very obvious advantage on intelligent management earthing for work line articulate/demolish state detecting system. The system has a very simple structural principle, a reliable and easily-realized circuit, and has higher anti-interference capability due to the specific amplitude and the time sequence transmission state of the electronic switch, and the '0' and '1' of data communication are simulated by outputting +24V voltage or outputting no voltage through the electronic switch, and the ground wire hanging and disconnecting state and the ground wire pile number information are respectively described and transmitted to the anti-misoperation host. The one-way transmission requirement of data communication is met, the isolation of electronic switches among devices is guaranteed, and the communication data information is highly safe. The technical scheme of the utility model can also use and need carry out the state detection occasion that electronic switch keeps apart at other.
Drawings
FIG. 1 is a schematic diagram of an electronic switch isolation system wirelessly collected in a state of a grounding wire being hung and detached;
FIG. 2 is a flow chart of the work of the wireless acquisition electronic switch isolation system in a state of grounding wire hanging and dismantling;
fig. 3 is an internal circuit diagram of the electronic switch.
Detailed Description
The present invention will be further described with reference to the following specific examples. It should be understood that the examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Furthermore, it should be understood that various changes and modifications can be made by those skilled in the art after reading the disclosure of the present invention, and these equivalents also fall within the scope of the invention.
The ground wire state acquisition system acquires the real-time state of the ground wire in a wireless transmission mode through the ground wire state acquisition device and transmits ground wire state data to the intelligent ground wire electronic switch contact output device in a wired or wireless transmission mode. The intelligent ground wire electronic switch output device is a rack-mounted device and is provided with a front panel and a rear panel, the front panel is provided with an LED display screen and used for indicating a system state, a power state and a communication state, the electronic switch is in a disconnection state, the rear panel is provided with a DC24V power input terminal, a ground wire hanging and disconnecting state disconnection loop terminal, a ground wire pile number information disconnection loop terminal, a system state disconnection loop terminal, an RS485 communication terminal, an RS232 communication terminal and an RS422 communication terminal. The intelligent ground wire electronic switch contact output device is also provided with an MCU data processing unit. The intelligent ground wire electronic switch contact output device inputs 24V direct current to supply hardware circuits of the device to work.
The ground wire hanging and dismounting state opening loop and the ground wire pile number information opening loop are designed by adopting an electronic switch, the electronic switch comprises a voltage stabilizing diode, a triode, an MOS (metal oxide semiconductor) tube and a resistance-capacitance circuit, and a specific circuit diagram is shown in figure 3. In fig. 3, DZ1 is a zener diode, R497 is a current limiting resistor, C142 is a filter capacitor, D147 is a bleeder diode, and R1071 is a transistor base and emitter on-resistance.
The MCU controls the I/O port to output high and low levels to the electronic switch, when the high level is output, the high level firstly passes through a reverse voltage stabilizing diode DZ1, after reverse breakdown, the high level passes through a current limiting resistor R497 and then drives a triode Q238 to be conducted, after the triode Q238 is conducted, a differential pressure conduction contact is formed between the grid electrode and the source electrode of the MOS tube G1 to output +24V voltage (equivalent to data 1); when the output low level is low, the reverse voltage stabilizing diode DZ1 is not conducted, the base electrode and the emitting electrode of the triode Q238 are not conducted due to no voltage difference, the grid electrode and the source electrode of the MOS tube G1 cannot form effective voltage difference and are not conducted, and the contact point has no output (which is equivalent to data 0), so that the electronic switch outputs +24V voltage or no output state, thereby realizing the output of data 0 and 1. The I/O port of the MCU can drive the MOS tube to output +24V voltage only by outputting effective high level, namely voltage is more than 3V and specific duration is 100mS square wave, a voltage stabilizing diode DZ1 is reversely connected in the circuit, a triode Q238 is driven to be conducted by utilizing the voltage stabilizing characteristic after Zener breakdown and further the MOS tube G1 is driven to be conducted to output 24V level with specific duration of 100mS, the common interference, namely the level is less than 3V or the duration is not continuous 100mS square wave, the output is invalid, the data isolation is greatly improved, in addition, a forward diode D288 connected in series with the drain electrode of the MOS tube G1 ensures that the system level can only be output in one direction, and the high safety of system data information is further ensured.
The system state open loop adopts the design of an optical coupling isolation circuit to acquire the working state of the intelligent ground wire electronic switch contact input device. The intelligent ground wire electronic switch contact output device acquires ground wire state data provided by the ground wire state acquisition device through the RS485 communication terminal, the RS232 communication terminal and the RS422 communication terminal.
The intelligent ground wire electronic switch contact input device is a rack-mounted device and is provided with a front panel and a rear panel, the front panel is provided with an LED display screen and used for indicating the system state, the power state and the communication state, the rear panel is provided with an AC220V power input terminal, a DC24V output terminal, a ground wire hanging and dismounting state opening loop terminal, a ground wire pile number information opening loop terminal, a system working state output loop terminal, an Ethernet communication interface, an RS485 communication terminal, an RS232 communication terminal, an RS422 communication terminal and a wireless communication antenna interface. The intelligent ground electronic switch contact input device inputs AC220V power for device hardware circuit operation and supplies the intelligent ground electronic switch contact output device through terminal output DC 24V. The ground wire hanging and dismounting state open loop and the ground wire pile number information open loop adopt an optical coupling isolation circuit design, and ground wire hanging and dismounting state and ground wire pile number information data provided by the intelligent ground wire electronic switch contact output device are collected. The system working state output loop adopts an electronic switch design, and outputs +24V (data 1) or no output suspension (data 0) are isolated through the electronic switch, so that four working states of the intelligent ground wire electronic switch contact output device system are described, and the four working states are respectively as follows: normal operation, abnormal operation, system reset and system data reset. The intelligent ground wire electronic switch contact input device collects the ground wire state and the ground wire pile number information data and transmits the ground wire state and the ground wire pile number information data to the anti-misoperation host through Ethernet communication.
The error prevention host logically judges the ground wire state and the ground wire pile number information according to the error prevention logic set by the system, displays the ground wire hanging and dismounting state and the ground wire pile number information in real time, sends an alarm signal to the ground wires which do not meet the logic requirement, reminds an operator to eliminate the defect, and completes the ground wire hanging and dismounting operation task only after the ground wire hanging and dismounting state and the ground wire pile number information completely meet the error prevention logic requirement set by the error prevention host system.
The intelligent ground wire electronic switch contact output device uses any one of 1-6 electronic switches to describe the hanging and dismantling state of the ground wire, optionally, the intelligent ground wire electronic switch contact output device uses a 3-bit electronic switch to describe the hanging and dismantling state of a ground wire, the first electronic switch state represents the enabling of the ground wire pile number, the last two electronic switch state represents the hanging and dismantling state of the ground wire, and the specific description is as follows:
000 indicates that the ground line is in the disconnected state;
001 represents that the ground wire is in a hanging state, and the pile number of the ground wire is unchanged;
010 shows that the ground wire is in a hanging state, and the pile number of the ground wire is unchanged;
011 represents a ground line state anomaly;
100 represents the ground line in the disconnected state;
101, the ground wire is in a hanging state, and the pile number of the ground wire is changed;
110 represents that the ground wire is in a hanging state, and the pile number of the ground wire is changed;
111 represents a ground line state anomaly.
The intelligent ground wire electronic switch contact output device uses at least 6-bit electronic switches to describe the number information of the ground wire piles, and optionally, the intelligent ground wire electronic switch contact output device uses 12-bit electronic switches to describe the number information of the ground wire piles, and can describe 4096 ground wire piles at most. The system realizes the isolated acquisition of the hanging and dismounting states of the grounding wire, reduces the cost and improves the network information security while realizing the intelligent management of the grounding wire states.
The embodiments of the present invention have been described above. However, the present invention is not limited to the above embodiment. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (12)
1. A grounding wire hanging-dismounting wireless acquisition electronic switch isolation system comprises an anti-misoperation host and is characterized by further comprising an intelligent grounding wire electronic switch contact input device, an intelligent grounding wire electronic switch contact output device and a grounding wire state acquisition device, wherein the grounding wire state acquisition device and the intelligent grounding wire electronic switch contact output device are respectively provided with a communication unit so that the grounding wire state acquisition device can transmit grounding wire state data to the intelligent grounding wire electronic switch contact output device, the intelligent grounding wire electronic switch contact output device comprises an MCU and an electronic switch so that the acquired grounding wire state data can be converted into electronic switch contact output, the intelligent grounding wire electronic switch contact input device is communicated with the intelligent grounding wire electronic switch contact output device and the anti-misoperation host through a communication unit, so that the intelligent ground wire electronic switch contact input device receives the ground wire state data from the intelligent ground wire electronic switch contact output device and transmits the ground wire state data to the anti-misoperation host.
2. The ground wire hanging and disconnecting wireless collection electronic switch isolation system as claimed in claim 1, wherein the ground wire state data comprises ground wire hanging and disconnecting state data and ground wire pile number information data.
3. The ground wire hanging and disconnecting wireless collection electronic switch isolation system as claimed in claim 2, wherein the intelligent ground wire electronic switch contact input device comprises a ground wire hanging and disconnecting state open loop terminal and a ground wire pile number information open loop terminal, and collects ground wire hanging and disconnecting state and ground wire pile number information data provided by the intelligent ground wire electronic switch contact output device.
4. The ground wire hanging and disconnecting wireless collection electronic switch isolation system as claimed in claim 2 or 3, wherein the intelligent ground wire electronic switch contact output device comprises a ground wire hanging and disconnecting state open loop terminal and a ground wire pile number information open loop terminal.
5. The ground wire hanging and disconnecting wireless collection electronic switch isolation system as claimed in claim 4, wherein the ground wire hanging and disconnecting state open circuit and the ground wire pile number information open circuit are electronic switches.
6. The ground wire hanging and disconnecting wireless collection electronic switch isolation system as claimed in claim 5, wherein the electronic switch comprises a voltage regulator diode, a triode, a MOS (metal oxide semiconductor) transistor and a resistance-capacitance circuit, and the transmission of the ground wire state is realized by outputting +24V voltage or no output by the electronic switch.
7. The ground wire hanging-down wireless collection electronic switch isolation system as claimed in claim 6, wherein the electronic switch is controlled to output +24V voltage or no output by the I/O output level of the MCU in the intelligent ground wire electronic switch contact output device.
8. The ground wire hanging and disconnecting wireless collection electronic switch isolation system as claimed in claim 6 or 7, wherein a drain of a MOS (metal oxide semiconductor) tube in the electronic switch is connected with a forward diode in series.
9. The ground wire hanging and disconnecting wireless collection electronic switch isolation system as claimed in claim 8, wherein the intelligent ground wire electronic switch contact output device uses 1-bit to 6-bit electronic switch contacts to describe the hanging and disconnecting state of the ground wire.
10. The ground wire hanging and disconnecting wireless collection electronic switch isolation system as claimed in claim 9, wherein the intelligent ground wire electronic switch contact output device uses 3-bit electronic switch contacts to describe the hanging and disconnecting state of the ground wire.
11. The ground wire hanging and disconnecting wireless collection electronic switch isolation system as claimed in claim 10, wherein the intelligent ground wire electronic switch contact output device uses at least 6-bit electronic switch contacts to describe ground wire stake number information.
12. The ground wire hanging and disconnecting wireless collection electronic switch isolation system as claimed in claim 11, wherein the intelligent ground wire electronic switch contact output device uses 12-bit electronic switch contacts to describe ground wire stake number information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920525943.4U CN209982457U (en) | 2019-04-17 | 2019-04-17 | Grounding wire hanging and dismounting wireless acquisition electronic switch isolation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920525943.4U CN209982457U (en) | 2019-04-17 | 2019-04-17 | Grounding wire hanging and dismounting wireless acquisition electronic switch isolation system |
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| Publication Number | Publication Date |
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| CN209982457U true CN209982457U (en) | 2020-01-21 |
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| CN201920525943.4U Active CN209982457U (en) | 2019-04-17 | 2019-04-17 | Grounding wire hanging and dismounting wireless acquisition electronic switch isolation system |
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