CN211206606U - Photoelectric isolation circuit structure of high-voltage insulation monitor - Google Patents
Photoelectric isolation circuit structure of high-voltage insulation monitor Download PDFInfo
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- CN211206606U CN211206606U CN201822037834.6U CN201822037834U CN211206606U CN 211206606 U CN211206606 U CN 211206606U CN 201822037834 U CN201822037834 U CN 201822037834U CN 211206606 U CN211206606 U CN 211206606U
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Abstract
The utility model discloses a photoelectric isolation circuit structure of a high-voltage insulation monitor, which comprises a photoelectric isolation circuit structure system, wherein the photoelectric isolation circuit structure system is provided with an output unit, an alarm circuit, a main controller, a signal amplification circuit, a signal processor and a signal receiver, the photoelectric isolation circuit structure system is provided with the signal receiver, one end of the signal receiver is connected with a load, when the signal receiver receives a signal, the signal receiver carries out preliminary encryption processing through the signal processor and then sends the signal to the signal amplification circuit for signal amplification, the signal after signal amplification is transmitted to the main controller for signal distribution processing, finally, the processed data signal is transmitted to the load connected with one end by a signal transmitter connected with one end, the photoelectric isolation circuit structure system adopts a signal one-way transmission technology, the input end and the output end completely realize electrical isolation, the output signal has no influence on the input end, strong anti-interference capability, stable work, no contact, long service life and high transmission efficiency.
Description
Technical Field
The utility model relates to a photoelectric isolation technical field specifically is a photoelectric isolation circuit structure of high-voltage insulation monitor.
Background
The high-voltage insulation resistance tester is suitable for measuring the insulation resistance of various transformers, motors, cables, switches, electrical equipment and insulation materials.
The high voltage insulation resistance tester is commonly called as a megohmmeter, or a megger, a high resistance meter, an insulation resistance tester and the like. The insulation resistance meter is a detection instrument for insulation resistance of a large number of electric power websites and electric equipment, and has important significance for ensuring product quality and personal and equipment safety in operation, and the insulation performance of an electric product is one of important signs for evaluating the insulation quality of the electric product and is reflected by the insulation resistance.
At present, in a circuit board of an existing driving load design, a driving power supply module and a digital power supply module are generally separated independently. The driving power supply is used for independently supplying power to the load, the digital power supply mainly supplies power to the CPU control chip and the digital control circuit, and the digital control circuit controls the load to work.
Disclosure of Invention
An object of the utility model is to provide an interference killing feature is strong, job stabilization, and is contactless, long service life, the high-voltage insulation monitor's that transmission efficiency is high photoelectric isolation circuit structure to solve the problem that proposes among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a high-voltage insulation monitor's optoelectronic isolation circuit structure, includes optoelectronic isolation circuit structure system, be equipped with signal transmitter, alarm circuit on the optoelectronic isolation circuit structure system, signal transmitter and alarm circuit connect in parallel each other, signal transmitter is equipped with main control unit with alarm circuit's one end, main control unit's the other end is equipped with signal amplification circuit, signal amplification circuit's the other end is equipped with signal processor, signal processor's the other end is equipped with signal receiver.
Preferably, a first resistor is arranged on the signal amplification circuit, one end of the first resistor is connected with the positive electrode of the second capacitor, the other end of the first resistor is connected with one end of the second resistor, a node between the first resistor and the second capacitor is connected with the positive electrode of the first capacitor, the negative electrode of the first capacitor is connected with a node between the first resistor and the second resistor, the negative electrode of the second capacitor is connected with the reverse input end of the first operational amplifier, the in-phase output end of the first operational amplifier is connected with one end of the fourth resistor, the other end of the fourth resistor is connected with the negative electrode of the first polarity capacitor, the positive electrode of the first polarity capacitor is connected with one end of the first resistor, the positive electrode of the first operational amplifier is connected with one end of the eighth resistor, the other end of the eighth resistor is connected with the output end of the second operational amplifier, and a node between the in-phase output end of the first operational amplifier and the third resistor is connected with the output end of the first operational amplifier A third capacitor is arranged between a node between the end and the third resistor, the output end of the first operational amplifier is connected with one end of a fifth resistor, the other end of the fifth resistor is connected with the negative electrode of the second polarity capacitor, the positive electrode of the second polarity capacitor is connected with the in-phase output end of the second operational amplifier, the reverse input end of the second operational amplifier is connected with one end of a seventh resistor, the other end of the seventh resistor is connected with one end of a sixth resistor, the other end of the sixth resistor is connected with one end of the first resistor, the other end of the seventh resistor is connected with one end of an eighth resistor, and the output end of the second operational amplifier is connected with 5V voltage.
Preferably, be equipped with the ninth resistance on the signal transmitter, the one end of ninth resistance is connected with the base of first triode, VCC end is connected to the projecting pole of first triode, and the collecting electrode of first triode is connected with the collecting electrode of second triode, 2V voltage is connected to the base of second triode, and the projecting pole of second triode is connected with the one end of tenth resistance, and the other end of tenth resistance is connected with emitting diode's negative pole, emitting diode's anodal ground connection.
Preferably, a diode is arranged on the signal receiver, a cathode of the diode is connected with one end of an eleventh resistor, an anode of the diode is connected with a VCC end, the other end of the eleventh resistor is grounded, one end of the eleventh resistor is further connected with one end of a twelfth resistor, the other end of the twelfth resistor is connected with an in-phase output end of a third operational amplifier, an inverting input end of the third operational amplifier is connected with an anode of a fifth capacitor, a cathode of the fifth capacitor is connected with a node between the eleventh resistor and the diode, a node between the fifth capacitor and the third operational amplifier is connected with one end of a thirteenth resistor, the other end of the thirteenth resistor is connected with an output end of the third operational amplifier, and an output end of the third operational amplifier is connected with a load.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses a photoelectric isolation circuit structure system adopts the one-way transmission technique of signal, and electrical isolation has been realized completely to input and output, and output signal does not have the influence to the input, and the interference killing feature is strong, job stabilization, and is contactless, long service life, transmission efficiency is high.
Drawings
FIG. 1 is a schematic diagram of a structural system of a photoelectric isolation circuit of the present invention;
FIG. 2 is a schematic diagram of the signal amplifying circuit of the present invention;
fig. 3 is a schematic diagram of the signal transmitting circuit of the present invention;
fig. 4 is a schematic diagram of the signal receiving circuit of the present invention.
In the figure: 1. a system of opto-electrically isolated circuit structures; 2. a signal transmitter; 3. an alarm circuit; 4. a main controller; 5. a signal amplification circuit; 6. a signal processor; 7. a signal receiver; 8. a first resistor; 9. a first capacitor; 10. a second capacitor; 11. a second resistor; 12. a first operational amplifier; 13. a third capacitor; 14. a third resistor; 15. a fourth resistor; 16. a first polarity capacitor; 17. a fifth resistor; 18. a second polarity capacitor; 19. a sixth resistor; 20. a seventh resistor; 21. a second operational amplifier; 22. a fourth capacitor; 23. an eighth resistor; 24. a ninth resistor; 25. a first triode; 26. a second triode; 27. a tenth resistor; 28. a light emitting diode; 29. a diode; 30. an eleventh resistor; 31. a fifth capacitor; 32. a twelfth resistor; 33. a third operational amplifier; 34. a thirteenth resistance.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a high-voltage insulation monitor's optoelectronic isolation circuit structure, including optoelectronic isolation circuit structure system 1, be equipped with signal transmitter 2 on the optoelectronic isolation circuit structure system 1, alarm circuit 3, signal transmitter 2 and alarm circuit 3 are parallelly connected each other, signal transmitter 2 is equipped with main control unit 4 with alarm circuit 3's one end, main control unit 4's the other end is equipped with signal amplification circuit 5, signal amplification circuit 5's the other end is equipped with signal processor 6, signal processor 6's the other end is equipped with signal receiver 7.
The signal amplification circuit 5 is provided with a first resistor 8, one end of the first resistor 8 is connected with the anode of a second capacitor 10, the other end of the first resistor 8 is connected with one end of a second resistor 11, the node between the first resistor 8 and the second capacitor 10 is connected with the anode of a first capacitor 9, the cathode of the first capacitor 9 is connected with the node between the first resistor 8 and the second resistor 11, the cathode of the second capacitor 10 is connected with the reverse input end of a first operational amplifier 12, the in-phase output end of the first operational amplifier 12 is connected with one end of a fourth resistor 15, the other end of the fourth resistor 15 is connected with the cathode of a first polarity capacitor 16, the anode of the first polarity capacitor 16 is connected with one end of the first resistor 8, the anode of the first operational amplifier 12 is connected with one end of an eighth resistor 23, the other end of the eighth resistor 23 is connected with the output end of a second operational amplifier 21, a third capacitor 13 is arranged between a node between the non-inverting output end of the first operational amplifier 12 and the third resistor 13 and a node between the output end of the first operational amplifier 12 and the third resistor 14, the output end of the first operational amplifier 12 is connected with one end of a fifth resistor 17, the other end of the fifth resistor 17 is connected with the negative electrode of a second polarity capacitor 18, the positive electrode of the second polarity capacitor 18 is connected with the non-inverting output end of a second operational amplifier 21, the inverting input end of the second operational amplifier 21 is connected with one end of a seventh resistor 20, the other end of the seventh resistor 20 is connected with one end of a sixth resistor 19, the other end of the sixth resistor 19 is connected with one end of a first resistor 8, the other end of the seventh resistor 20 is connected with one end of an eighth resistor 23, and the output end of the second operational amplifier 21 is connected with a voltage of 5V.
A ninth resistor 24 is arranged on the signal emitter 2, one end of the ninth resistor 24 is connected with the base electrode of the first triode 25, the emitting electrode of the first triode 25 is connected with the VCC end, the collecting electrode of the first triode 25 is connected with the collecting electrode of the second triode 26, the base electrode of the second triode 26 is connected with 2V voltage, the emitting electrode of the second triode 26 is connected with one end of a tenth resistor 27, the other end of the tenth resistor 27 is connected with the negative electrode of a light-emitting diode 28, and the positive electrode of the light-emitting diode 28 is grounded; the signal receiver 7 is provided with a diode 29, the cathode of the diode 29 is connected with one end of an eleventh resistor 30, the anode of the diode 29 is connected with the VCC end, the other end of the eleventh resistor 30 is grounded, one end of the eleventh resistor 30 is further connected with one end of a twelfth resistor 32, the other end of the twelfth resistor 32 is connected with the non-inverting output end of a third operational amplifier 33, the inverting input end of the third operational amplifier 33 is connected with the anode of a fifth capacitor 31, the cathode of the fifth capacitor 31 is connected with a node between the eleventh resistor 30 and the diode 29, the node between the fifth capacitor 31 and the third operational amplifier 33 is connected with one end of a thirteenth resistor 34, the other end of the thirteenth resistor 34 is connected with the output end of the third operational amplifier 33, and the output end of the third operational amplifier 33 is connected with a load.
The utility model discloses in, be equipped with signal receiver 7 on optoelectronic isolation circuit structure system 1, signal receiver 7's one end is connected with the load, receive the signal when signal receiver 7, send into signal amplification circuit 5 after carrying out preliminary encryption processing through signal processor 6 and carry out the enlargiing of signal, signal transmission after signal amplification carries out signal distribution's processing to main control unit 4, finally carry the load of connecting to one end by signal transmitter 2 that one end is connected with the data signal who handles, optoelectronic isolation circuit structure system adopts the one-way transmission technique of signal, electrical isolation has been realized completely to the input with the output, output signal does not have the influence to the input, the interference killing feature is strong, job stabilization, it is contactless, long service life, transmission efficiency is high.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The utility model provides a photoelectric isolation circuit structure of high-voltage insulation monitor, includes photoelectric isolation circuit structural system, its characterized in that: be equipped with signal transmitter (2) on photoelectric isolation circuit structure system (1), warning circuit (3), signal transmitter (2) and warning circuit (3) are parallelly connected each other, signal transmitter (2) and warning circuit (3) one end are equipped with main control unit (4), the other end of main control unit (4) is equipped with signal amplification circuit (5), the other end of signal amplification circuit (5) is equipped with signal processor (6), the other end of signal processor (6) is equipped with signal receiver (7).
2. The optoelectronic isolation circuit structure of a high voltage insulation monitor as claimed in claim 1, wherein: a first resistor (8) is arranged on the signal amplification circuit (5), one end of the first resistor (8) is connected with the positive electrode of a second capacitor (10), the other end of the first resistor (8) is connected with one end of a second resistor (11), a node between the first resistor (8) and the second capacitor (10) is connected with the positive electrode of a first capacitor (9), the negative electrode of the first capacitor (9) is connected with a node between the first resistor (8) and the second resistor (11), the negative electrode of the second capacitor (10) is connected with the reverse input end of a first operational amplifier (12), the in-phase output end of the first operational amplifier (12) is connected with one end of a fourth resistor (15), the other end of the fourth resistor (15) is connected with the negative electrode of a first polarity capacitor (16), the positive electrode of the first polarity capacitor (16) is connected with one end of the first resistor (8), the positive electrode of the first operational amplifier (12) is connected with one end of an eighth resistor (23), the other end of the eighth resistor (23) is connected with the output end of the second operational amplifier (21), a third capacitor (13) is arranged between a node between the in-phase output end of the first operational amplifier (12) and the third resistor (14) and a node between the output end of the first operational amplifier (12) and the third resistor (14), the output end of the first operational amplifier (12) is connected with one end of a fifth resistor (17), the other end of the fifth resistor (17) is connected with the negative electrode of a second polar capacitor (18), the positive electrode of the second polar capacitor (18) is connected with the in-phase output end of the second operational amplifier (21), the reverse input end of the second operational amplifier (21) is connected with one end of a seventh resistor (20), and the other end of the seventh resistor (20) is connected with one end of a sixth resistor (19), the other end of the sixth resistor (19) is connected with one end of the first resistor (8), the other end of the seventh resistor (20) is connected with one end of the eighth resistor (23), and the output end of the second operational amplifier (21) is connected with 5V voltage.
3. The optoelectronic isolation circuit structure of a high voltage insulation monitor as claimed in claim 1, wherein: be equipped with ninth resistance (24) on signal transmitter (2), the one end of ninth resistance (24) is connected with the base of first triode (25), VCC end is connected to the projecting pole of first triode (25), and the collecting electrode of first triode (25) is connected with the collecting electrode of second triode (26), 2V voltage is connected to the base of second triode (26), and the projecting pole of second triode (26) is connected with the one end of tenth resistance (27), and the other end of tenth resistance (27) is connected with the negative pole of emitting diode (28), the anodal ground of emitting diode (28).
4. The optoelectronic isolation circuit structure of a high voltage insulation monitor as claimed in claim 1, wherein: the signal receiver (7) is provided with a diode (29), the cathode of the diode (29) is connected with one end of an eleventh resistor (30), the anode of the diode (29) is connected with a VCC end, the other end of the eleventh resistor (30) is grounded, one end of the eleventh resistor (30) is also connected with one end of a twelfth resistor (32), the other end of the twelfth resistor (32) is connected with the non-inverting output end of a third operational amplifier (33), the inverting input end of the third operational amplifier (33) is connected with the anode of a fifth capacitor (31), the cathode of the fifth capacitor (31) is connected with a node between the eleventh resistor (30) and the diode (29), the node between the fifth capacitor (31) and the third operational amplifier (33) is connected with one end of a thirteenth resistor (34), and the other end of the thirteenth resistor (34) is connected with the output end of the third operational amplifier (33), the output of the third operational amplifier (33) is connected to a load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822037834.6U CN211206606U (en) | 2018-12-06 | 2018-12-06 | Photoelectric isolation circuit structure of high-voltage insulation monitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822037834.6U CN211206606U (en) | 2018-12-06 | 2018-12-06 | Photoelectric isolation circuit structure of high-voltage insulation monitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211206606U true CN211206606U (en) | 2020-08-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822037834.6U Active CN211206606U (en) | 2018-12-06 | 2018-12-06 | Photoelectric isolation circuit structure of high-voltage insulation monitor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211206606U (en) |
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2018
- 2018-12-06 CN CN201822037834.6U patent/CN211206606U/en active Active
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