CN221100891U - System for monitoring potential contact and empty contact in electrical system - Google Patents
System for monitoring potential contact and empty contact in electrical system Download PDFInfo
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- CN221100891U CN221100891U CN202420979296.5U CN202420979296U CN221100891U CN 221100891 U CN221100891 U CN 221100891U CN 202420979296 U CN202420979296 U CN 202420979296U CN 221100891 U CN221100891 U CN 221100891U
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- 210000004899 c-terminal region Anatomy 0.000 claims description 3
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Abstract
The utility model provides a system for monitoring potential joints and empty joints IN an electrical system, wherein the right end of a resistor R1 is connected with an output voltage VP1, the left end of the resistor R1 is connected with the upper end of a diode D1, the lower end of the diode D1 is connected with a C pin of a full-bridge rectifying circuit B1, and a monitoring potential point K_In1 is arranged between the diode D1 and the full-bridge rectifying circuit B1; the system realizes detection of the state change of the contact in the circuit by arranging the photoelectric sensor and the power converter for signal processing, and comprises an LED alarm function, so that electrical monitoring and fault diagnosis are provided; judging whether an abnormal condition exists according to the threshold value, and triggering a corresponding alarm mechanism.
Description
Technical Field
The utility model relates to the technical field of electrical monitoring, in particular to a system for monitoring potential contacts and empty contacts in an electrical system.
Background
In an electrical system, monitoring of potential contacts and relay empty contacts is important for detecting state changes of a circuit in real time, diagnosing faults and maintaining and repairing works. Conventional methods for monitoring potential contacts and empty contacts have some limitations, and manual inspection is generally used to determine the state of the contacts. In the detection of potential contacts, voltage change is mainly detected, empty contacts are mainly used for monitoring on-off conditions, simple monitoring can be realized by adopting a traditional detection device, but the two points are required to be set by an adjustment system, so that the system is excessively troublesome. Simple structure and high anti-interference effect.
Therefore, the application provides an electrical monitoring system aiming at the existing problems of potential contact and empty contact monitoring methods. The photoelectric coupler is reasonably arranged to judge whether the voltage of the contact point state exceeds the threshold value or not, so that manual erroneous judgment is avoided.
Disclosure of utility model
The above object of the present utility model is achieved by the following technical solutions:
A system for monitoring potential and empty contacts IN an electrical system, comprising a monitoring potential point k_in1, an input voltage 5VKR, an input voltage 0VKR, an output voltage VP1, an output voltage VN1, an output voltage INP1, an input voltage +5vd, a ground GND1, a full-bridge rectifying circuit B1, an operational amplifier U1A, a photo coupler U2, an NPN triode Q1, a power converter B2, and a zener diode D2, wherein: the input voltage 5VKR is connected with the No. 1 pin of the power converter B2, the input voltage 0VKR is connected with the No. 2 pin of the power converter B2, the output voltage VN1 output by the No. 4 pin of the power converter B2 is connected to the left side of the resistor R16, the No. 5 pin of the power converter B2 is grounded to the GND1, the output voltage VP1 output by the No. 6 pin of the power converter B2 is connected to the left side of the resistor R15, and the right side of the resistor R15 is connected with the No. 5 pin of the power converter B2 to the GND 1;
The right end of the resistor R1 is connected with the output voltage VP1, the left end of the resistor R1 is connected with the upper end of the diode D1, the lower end of the diode D1 is connected with the C pin of the full-bridge rectifying circuit B1, the monitoring potential point K_In1 is arranged between the diode D1 and the full-bridge rectifying circuit B1, the D pin of the full-bridge rectifying circuit B1 is grounded to the ground wire GND1, the A pin of the full-bridge rectifying circuit B1 is connected with the upper end of the resistor R3, the upper end of the voltage stabilizing diode D2 and the left end of the resistor R4, the B pin of the full-bridge rectifying circuit B1 is connected with the lower end of the resistor R3, the lower end of the voltage stabilizing diode D2 and the left end of the resistor R5, the right end of the resistor R4 is connected with the No. 3 pin of the operational amplifier U1A, the right end of the resistor R5 and the left end of the resistor R6 are simultaneously connected with the No. 2 pin of the operational amplifier U1A, the No. 1 pin of the operational amplifier U1A is connected with the left end of the resistor R11, and the B pin of the No. 3 pin of the operational amplifier U1A 8 is connected with the voltage stabilizing diode D1, and the voltage stabilizing diode D1 is connected with the voltage stabilizing end of the voltage stabilizing diode B1;
The output voltage VN1 is connected to the pin No. 4 of the operational amplifier U1A, the pin No. 1 of the photoelectric coupler U2 is connected to the right end of the voltage stabilizing diode D3, the pin No. 2 of the photoelectric coupler U2 is connected to the right end of the resistor R11, the pin No. 3 of the photoelectric coupler U2 is connected with the input voltage +5VD, the pin No. 4 of the photoelectric coupler U2 is connected with the upper end of the resistor R13 and the left end of the resistor R14, the pin B of the NPN triode Q1 is connected to the right end of the resistor R14, the pin E of the NPN triode Q1 is connected with the lower end of the resistor R13, the pin C of the NPN triode Q1 is connected with the light emitting diode LED1, and the output voltage INP1 is arranged between the left end of the resistor R14 and the pin No. 4 of the photoelectric coupler U2.
Further, the diode D1 is connected to the C pin of the full-bridge rectifier circuit B1 through a resistor R2, and the monitor potential point k_in1 is located between the diode D1 and the resistor R2.
Further, the C terminal pin of the NPN transistor Q1 is connected to the light emitting diode LED1 through the resistor R17.
In summary, the utility model has the following beneficial technical effects:
1. The system adopts the power converter B2 to integrate the full-bridge rectifying circuit B1, the operational amplifier U1A, the photoelectric coupler U2 and the NPN triode Q1 to form a monitoring system, and loads the lead out wire at the monitoring potential point K_In1 on a potential contact or an empty contact for monitoring, so that the universal monitoring of two different points is realized, and additional setting is not needed.
2. By adopting the photoelectric coupler, the model stable output of the system under complex interference is improved, and the stability and sensitivity of the system are improved.
Drawings
FIG. 1 is a circuit diagram of the present utility model;
fig. 2 is a circuit diagram of the power converter B2 of the present utility model;
Detailed Description
A system for monitoring potential and empty contacts IN an electrical system, as shown IN fig. 1-2, comprising a monitoring potential point k_in1, an input voltage 5VKR, an input voltage 0VKR, an output voltage VP1, an output voltage VN1, an output voltage INP1, an input voltage +5vd, a ground GND1, a full-bridge rectifying circuit B1, an operational amplifier U1A, a photo coupler U2, an NPN triode Q1, a power converter B2, and a zener diode D2, wherein: an input voltage of 5VKR is connected with a No. 1 pin of the power converter B2, an input voltage of 0VKR is connected with a No. 2 pin of the power converter B2, the power converter B2 is loaded with 5v voltage through the two pins, the output voltage VN1 output by the No. 4 pin of the power converter B2 is connected to the left side of the resistor R16, the No. 5 pin of the power converter B2 is grounded to the ground wire GND1, and the model of the power converter B2 is RA-0509D; the output voltage VP1 output by the No. 6 pin of the power converter B2 is connected to the left side of the resistor R15; the resistance value of the resistor R15 is 2 kiloohms, and the right side of the resistor R15 is connected with the right side of the resistor R16 and the No. 5 pin grounding wire GND1 of the power converter B2; the resistance value of the resistor R16 is 2 kiloohms; the right end of the resistor R1 is connected with the output voltage VP1, the model of the resistor R1 is PTC75S102M008, the left end of the resistor R1 is connected with the upper end of a diode D1, and the model of the diode D is IN4007; the lower end of the diode D1 is connected with a C pin of the full-bridge rectifying circuit B1, and the model of the full-bridge rectifying circuit B1 is HD06; the monitoring potential point K_In1 is arranged between the diode D1 and the full-bridge rectifying circuit B1, the pin D of the full-bridge rectifying circuit B1 is grounded to the ground wire GND1, the pin A of the full-bridge rectifying circuit B1 is connected with the upper end of the resistor R3, the upper end of the voltage-stabilizing diode D2 and the left end of the resistor R4, the pin B of the full-bridge rectifying circuit B1 is connected with the lower end of the resistor R3, the lower end of the voltage-stabilizing diode D2 and the left end of the resistor R5, the right end of the resistor R4 is connected with the pin 3 of the operational amplifier U1A, the right end of the resistor R5 and the left end of the resistor R6 are simultaneously connected with the pin 2 of the operational amplifier U1A, the model of the operational amplifier U1A is MC4558, the pin 1 of the operational amplifier U1A is connected with the right end of the resistor R6 and the left end of the resistor R11, the pin 8 of the operational amplifier U1A is connected with the left end of the zener diode D3, and an output voltage VP1 is connected between the left end of the zener diode D3 and the pin 5 of the operational amplifier U1A; the pin 4 of the operational amplifier U1A is connected with the output voltage VN1, the right end of the voltage stabilizing diode D3 is connected with the pin 1 of the photoelectric coupler U2, the right end of the resistor R11 is connected with the pin 2 of the photoelectric coupler U2, the pin 3 of the photoelectric coupler U2 is connected with the input voltage +5VD, the pin 4 of the photoelectric coupler U2 is connected with the upper end of the resistor R13 and the left end of the resistor R14, and the model number of the photoelectric coupler U2 is 2701; the right end of the resistor R14 is connected with the B end pin of the NPN triode Q1, the E end pin of the NPN triode Q1 is connected with the lower end of the resistor R13, the C end pin of the NPN triode Q1 is connected with the light emitting diode LED1, the output voltage INP1 is arranged between the left end of the resistor R14 and the No. 4 pin of the photoelectric coupler U2, and the model of the NPN triode Q1 is MMBT2222.
Specifically, the diode D1 is connected to the C pin of the full-bridge rectifier circuit B1 through a resistor R2, and the monitor potential point k_in1 is located between the diode D1 and the resistor R2.
Specifically, the C-terminal pin of NPN transistor Q1 is connected to light emitting diode LED1 through resistor R17.
Working principle:
The input of the power converter B2 adopts 5v voltage, the voltage of +/-9 v is output through the conversion of the power converter B2, the output voltage VP1 of the power converter B2 is connected into a circuit, the C end of the full-bridge rectifying circuit B1 is connected through a resistor R1 and a diode D1, the D end of the full-bridge rectifying circuit B1 is connected with a ground wire GND1, a monitoring potential point K_In1 is positioned between the resistor R1 and the resistor R2, the monitoring voltage of a potential contact and an empty contact is the voltage between the monitoring potential point K_In1 and the ground wire GND1, the monitoring potential point K_In1 monitors the potential contact and the empty contact through the lead wire matched with the ground wire GND1, the monitored potential contact is IN a state of 100v or 0v, and the empty contact is a relay empty contact; one specific application scenario of the application is to judge whether the monitoring potential contact is in a state of about 100v or in a state of 0v, and an empty contact on-off state.
The output voltages VP1 and VN1 of the power converter B2 are loaded on the operational amplifier U1A, when the output voltage INP1 is high level, the circuit voltage monitoring is normal and does not change, when the voltage change of the output voltage INP1 exceeds 3 volts, the output voltage INP1 is low level, the voltage change of the connected light-emitting diode LED1, the light-emitting diode LED1 lights up to give an alarm, the real-time monitoring of a monitoring potential point K_In1 is realized through the light-emitting diode LED1, the output voltage INP1 is generally IN two states IN the specific application scene of the application, one is IN the state that the voltage is between 0.3v and 0.4v, and the other is IN the state that the voltage is between 3v and 4 v.
Finally, it should be noted that: the foregoing description of the preferred embodiments of the present utility model is not intended to be limiting, but rather, although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.
Claims (3)
1. A system for monitoring potential and empty contacts in an electrical system, comprising: monitor potential point K_In1, input voltage 5VKR, input voltage 0VKR, output voltage VP1, output voltage VN1, output voltage INP1, input voltage +5VD, ground wire GND1, full-bridge rectifier circuit B1, operational amplifier U1A, photocoupler U2, NPN triode Q1, power converter B2, zener diode D2, its characterized IN that: the input voltage 5VKR is connected with the No. 1 pin of the power converter B2, the input voltage 0VKR is connected with the No. 2 pin of the power converter B2, the output voltage VN1 output by the No. 4 pin of the power converter B2 is connected to the left side of the resistor R16, the No. 5 pin of the power converter B2 is grounded to the GND1, the output voltage VP1 output by the No. 6 pin of the power converter B2 is connected to the left side of the resistor R15, and the right side of the resistor R15 is connected with the No. 5 pin of the power converter B2 to the GND 1;
The right end of the resistor R1 is connected with the output voltage VP1, the left end of the resistor R1 is connected with the upper end of the diode D1, the lower end of the diode D1 is connected with the C pin of the full-bridge rectifying circuit B1, the monitoring potential point K_In1 is arranged between the diode D1 and the full-bridge rectifying circuit B1, the D pin of the full-bridge rectifying circuit B1 is grounded to the ground wire GND1, the A pin of the full-bridge rectifying circuit B1 is connected with the upper end of the resistor R3, the upper end of the voltage stabilizing diode D2 and the left end of the resistor R4, the B pin of the full-bridge rectifying circuit B1 is connected with the lower end of the resistor R3, the lower end of the voltage stabilizing diode D2 and the left end of the resistor R5, the right end of the resistor R4 is connected with the No. 3 pin of the operational amplifier U1A, the right end of the resistor R5 and the left end of the resistor R6 are simultaneously connected with the No. 2 pin of the operational amplifier U1A, the No. 1 pin of the operational amplifier U1A is connected with the left end of the resistor R11, and the B pin of the No. 3 pin of the operational amplifier U1A 8 is connected with the voltage stabilizing diode D1, and the voltage stabilizing diode D1 is connected with the voltage stabilizing end of the voltage stabilizing diode B1; the output voltage VN1 is connected to the pin No. 4 of the operational amplifier U1A, the pin No. 1 of the photoelectric coupler U2 is connected to the right end of the voltage stabilizing diode D3, the pin No. 2 of the photoelectric coupler U2 is connected to the right end of the resistor R11, the pin No. 3 of the photoelectric coupler U2 is connected with the input voltage +5VD, the pin No. 4 of the photoelectric coupler U2 is connected with the upper end of the resistor R13 and the left end of the resistor R14, the pin B of the NPN triode Q1 is connected to the right end of the resistor R14, the pin E of the NPN triode Q1 is connected with the lower end of the resistor R13, the pin C of the NPN triode Q1 is connected with the light emitting diode LED1, and the output voltage INP1 is arranged between the left end of the resistor R14 and the pin No. 4 of the photoelectric coupler U2.
2. A system for monitoring potential and empty contacts in an electrical system according to claim 1, wherein: the diode D1 is connected with the C pin of the full-bridge rectifying circuit B1 through a resistor R2, and the monitoring potential point K_In1 is located between the diode D1 and the resistor R2.
3. A system for monitoring potential and empty contacts in an electrical system according to claim 1 or 2, characterized in that: the C terminal pin of the NPN triode Q1 is connected with the light emitting diode LED1 through a resistor R17.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420979296.5U CN221100891U (en) | 2024-05-08 | 2024-05-08 | System for monitoring potential contact and empty contact in electrical system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420979296.5U CN221100891U (en) | 2024-05-08 | 2024-05-08 | System for monitoring potential contact and empty contact in electrical system |
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| Publication Number | Publication Date |
|---|---|
| CN221100891U true CN221100891U (en) | 2024-06-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420979296.5U Active CN221100891U (en) | 2024-05-08 | 2024-05-08 | System for monitoring potential contact and empty contact in electrical system |
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| Country | Link |
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| CN (1) | CN221100891U (en) |
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- 2024-05-08 CN CN202420979296.5U patent/CN221100891U/en active Active
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