CN204882706U - Switch quantity output autodiagnosis circuit - Google Patents
Switch quantity output autodiagnosis circuit Download PDFInfo
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- CN204882706U CN204882706U CN201520557078.3U CN201520557078U CN204882706U CN 204882706 U CN204882706 U CN 204882706U CN 201520557078 U CN201520557078 U CN 201520557078U CN 204882706 U CN204882706 U CN 204882706U
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- 230000003750 conditioning effect Effects 0.000 claims abstract description 24
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000004088 simulation Methods 0.000 abstract 3
- 238000005516 engineering process Methods 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 3
- 230000000737 periodic effect Effects 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
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Abstract
The utility model provides a switch quantity output autodiagnosis circuit, relates to industrial control technical field, and that solve is the technical problem who makes things convenient for system maintenance. The source takes place including output relay, adc, hall current sensor, logical operation module, reference signal for this circuit, and this circuit has a three output contact, and wherein first output contact connects the former limit of hall current sensor to the stationary contact of output relay, and second, third output contact connect two movable contacts exporting the relay respectively, first, a second output contact warp DC signal conditioning module receives adc's simulation and inclines, inclines through the simulation that an alternating current signal conditioning module received adc in first, third output contact, and adc's simulation side is received respectively on the vice limit of reference signal emergence source and hall current sensor, adc's digit side is received to the logical operation module through data bus. The utility model provides a circuit is applicable to output voltage, the electric current of diagnosing the switching value module.
Description
Technical field
The utility model relates to industrial control technology, particularly relates to a kind of technology of output switch parameter autodiagnosis circuit.
Background technology
Modern industry industry is (as chemical industry controls, nuclear power industry etc.), require the whole flow process (input controlled, controller, export) all to have higher reliabilty and availability, once discovering device fault need be investigated fault in time, determines faulty equipment and change, ensure industrial process not by considerable influence.But existing control system does not have the self-diagnosing function of module level, need at substantial manpower and materials to carry out equipment failure investigation during causing trouble, make troubles to system maintenance.
Summary of the invention
For the defect existed in above-mentioned prior art, technical problem to be solved in the utility model is to provide a kind of output switch parameter autodiagnosis circuit that can facilitate system maintenance.
In order to solve the problems of the technologies described above, a kind of output switch parameter autodiagnosis circuit provided by the utility model, it is characterized in that: this circuit comprises output relay, analog to digital converter, Hall current sensor, logical operation module, direct current signal conditioning module, AC signal conditioning module, reference signal occurring source, and for the output driver module of driver output relay deciliter, and this circuit has three output contacts, these three contacts are respectively the first output contact, the second output contact, the 3rd output contact;
Described output relay has a normally closed contact and a normally opened contact, the drive singal output terminal exporting driver module receives the control end of output relay, the stationary contact of output relay receives the first output contact through the former limit of Hall current sensor, and the normally closed contact of output relay and normally opened contact receive the second output contact, the 3rd output contact respectively;
The positive and negative signal input part of described direct current signal conditioning module receives the first output contact, the second output contact respectively;
The positive and negative signal input part of described AC signal conditioning module receives the first output contact, the 3rd output contact respectively;
Described analog to digital converter has six input end of analog signal, one of them input end of analog signal receives the secondary voltage output terminal of Hall current sensor, another input end of analog signal receives reference signal occurring source, another two input end of analog signal receive the positive and negative signal output part of direct current signal conditioning module respectively, and another two input end of analog signal receive the positive and negative signal output part of AC signal conditioning module respectively;
Described logical operation module receives the digital signal output end mouth of analog to digital converter through data bus.
The output switch parameter autodiagnosis circuit that the utility model provides, achieve the Real-Time Monitoring of output switch parameter voltage, electric current, and combined-voltage all can be monitored, can also be diagnosed circuit self by periodic sampling reference signal occurring source, the output of effective guarantee switching value is authentic and valid, can facilitate system maintenance.
Accompanying drawing explanation
Fig. 1 is the galvanic schematic diagram of output switch parameter autodiagnosis circuit monitoring of the utility model embodiment.
Embodiment
Illustrate below in conjunction with accompanying drawing and be described in further detail embodiment of the present utility model, but the present embodiment is not limited to the utility model, every employing analog structure of the present utility model and similar change thereof, all should list protection domain of the present utility model in.
As shown in Figure 1, a kind of output switch parameter autodiagnosis circuit that the utility model embodiment provides, it is characterized in that: this circuit comprises output relay D1, analog to digital converter U2, Hall current sensor U3, logical operation module U4, direct current signal conditioning module U5, AC signal conditioning module U6, reference signal occurring source U7, and for the output driver module U1 of driver output relay deciliter, and this circuit has three output contacts, these three contacts are respectively the first output contact B1, the second output contact B2, the 3rd output contact B3;
Described output relay D1 has a normally closed contact and a normally opened contact, the drive singal output terminal exporting driver module U1 receives the control end of output relay D1, the stationary contact of output relay D1 receives the first output contact B1 through the former limit of Hall current sensor U3, and the normally closed contact of output relay D1 and normally opened contact receive the second output contact B2, the 3rd output contact B3 respectively;
The positive and negative signal input part of described direct current signal conditioning module U5 receives the first output contact B1, the second output contact B2 respectively;
The positive and negative signal input part of described AC signal conditioning module U6 receives the first output contact B1, the 3rd output contact B3 respectively;
Described analog to digital converter U2 has six input end of analog signal, one of them input end of analog signal receives the secondary voltage output terminal of Hall current sensor U3, another input end of analog signal receives reference signal occurring source U7, another two input end of analog signal receive the positive and negative signal output part of direct current signal conditioning module U5 respectively, and another two input end of analog signal receive the positive and negative signal output part of AC signal conditioning module U6 respectively;
Described logical operation module U4 receives the digital signal output end mouth of analog to digital converter U2 through data bus.
In the utility model embodiment, described logical operation module U4, direct current signal conditioning module U5, AC signal conditioning module U6 are prior art, what logical operation module U4 wherein adopted is fpga chip, the Hall current sensor chip of to be model the be ACS710KLATR that Hall current sensor U3 adopts, the modulus conversion chip of to be model the be ADS1248IPWR that analog to digital converter U2 adopts, what reference signal occurring source U7 adopted is model is the reference voltage source of LTC6652AHMS8-1.25.
The utility model embodiment can monitoring switch amount output voltage, and combined-voltage all can be monitored, and its principle of work is as follows:
When switching value output module R1 is that when driving direct current to export, its positive pole flows through Hall current sensor U3 by the first output contact B1, then through output relay D1 to the second output contact B2; Wherein, Hall current sensor U3 converts the electric current passed through to voltage signal and is delivered to analog to digital converter U2, after analog to digital converter U2 changes, send into logical operation module U4 again, diagnose the electric current flowing through Hall current sensor U3 whether in the scope preset by logical operation module U4; D. c. voltage signal between first output contact B1, the second output contact B2 is by sending into analog to digital converter U2 after direct current signal conditioning module U5, after analog to digital converter U2 changes, send into logical operation module U4 again, diagnose DC voltage between the first output contact B1, the second output contact B2 whether in the scope preset by logical operation module U4;
When switching value output module is that when driving interchange to export, its AC signal flows through Hall current sensor U3 by the first output contact B1, then through output relay D1 to the 3rd output contact B3; Wherein, Hall current sensor U3 converts the electric current passed through to voltage signal and is delivered to analog to digital converter U2, after analog to digital converter U2 changes, send into logical operation module U4 again, diagnose the electric current flowing through Hall current sensor U3 whether in the scope preset by logical operation module U4; Ac voltage signal between first output contact B1, the 3rd output contact B3 is by sending into analog to digital converter U2 after AC signal conditioning module U6, after analog to digital converter U2 changes, send into logical operation module U4 again, diagnose alternating voltage between the first output contact B1, the 3rd output contact B3 whether in the scope preset by logical operation module U4;
Analog to digital converter U2 periodic sampling reference signal occurring source U7, and send into logical operation module U4 after sampled signal is converted to digital signal, sampled signal and specified original value compare by logical operation module U4, whether diagnosis sampled signal exceeds setting range, and then diagnose out the work of analog to digital converter U2 whether normal, such as reference signal occurring source U7 is the high precision reference source of 1.25VDC, if the difference between the magnitude of voltage that analog to digital converter U2 measures and specified original value exceeds this accuracy rating, then show that autodiagnosis circuit breaks down, its autodiagnosis result is insincere.
Claims (1)
1. an output switch parameter autodiagnosis circuit, it is characterized in that: this circuit comprises output relay, analog to digital converter, Hall current sensor, logical operation module, direct current signal conditioning module, AC signal conditioning module, reference signal occurring source, and for the output driver module of driver output relay deciliter, and this circuit has three output contacts, these three contacts are respectively the first output contact, the second output contact, the 3rd output contact;
Described output relay has a normally closed contact and a normally opened contact, the drive singal output terminal exporting driver module receives the control end of output relay, the stationary contact of output relay receives the first output contact through the former limit of Hall current sensor, and the normally closed contact of output relay and normally opened contact receive the second output contact, the 3rd output contact respectively;
The positive and negative signal input part of described direct current signal conditioning module receives the first output contact, the second output contact respectively;
The positive and negative signal input part of described AC signal conditioning module receives the first output contact, the 3rd output contact respectively;
Described analog to digital converter has six input end of analog signal, one of them input end of analog signal receives the secondary voltage output terminal of Hall current sensor, another input end of analog signal receives reference signal occurring source, another two input end of analog signal receive the positive and negative signal output part of direct current signal conditioning module respectively, and another two input end of analog signal receive the positive and negative signal output part of AC signal conditioning module respectively;
Described logical operation module receives the digital signal output end mouth of analog to digital converter through data bus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520557078.3U CN204882706U (en) | 2015-07-29 | 2015-07-29 | Switch quantity output autodiagnosis circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520557078.3U CN204882706U (en) | 2015-07-29 | 2015-07-29 | Switch quantity output autodiagnosis circuit |
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| Publication Number | Publication Date |
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| CN204882706U true CN204882706U (en) | 2015-12-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520557078.3U Active CN204882706U (en) | 2015-07-29 | 2015-07-29 | Switch quantity output autodiagnosis circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102022214310A1 (en) | 2022-12-22 | 2024-06-27 | Robert Bosch Gesellschaft mit beschränkter Haftung | Circuit arrangement, electrical energy storage device and device |
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2015
- 2015-07-29 CN CN201520557078.3U patent/CN204882706U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102022214310A1 (en) | 2022-12-22 | 2024-06-27 | Robert Bosch Gesellschaft mit beschränkter Haftung | Circuit arrangement, electrical energy storage device and device |
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