CN203133197U - Test apparatus for electric executing mechanism - Google Patents
Test apparatus for electric executing mechanism Download PDFInfo
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- CN203133197U CN203133197U CN 201320069625 CN201320069625U CN203133197U CN 203133197 U CN203133197 U CN 203133197U CN 201320069625 CN201320069625 CN 201320069625 CN 201320069625 U CN201320069625 U CN 201320069625U CN 203133197 U CN203133197 U CN 203133197U
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- test
- optocoupler
- valve
- amplifier
- relay
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Abstract
A test apparatus for an electric executing mechanism relates to the executing mechanism technology field and is to solve technology problems of complex operation, slow test speed and bad test accuracy in prior art. The apparatus comprises a single-chip microcomputer, a relay test circuit, a valve test circuit, a current test circuit and an ESD test circuit. An analog-digital converter is built in the single-chip microcomputer and the single-chip microcomputer is provided with a relay-signal feedback terminal, a valve test-signal output terminal, an analog-signal input terminal, an ESD test-signal output terminal and a communication interface. The relay test circuit comprises a relay-test connection piece and a relay-test optocoupler. The valve test circuit comprises a valve-test connection piece, a valve-test optocoupler and a Darlington tube. The current test circuit comprises a current-test connection piece, a current-test optocoupler and three amplifiers. The ESD test circuit comprises an ESD test connection piece and an ESD test optocoupler. The apparatus provided by the utility model is suitable for function test of the electric executing mechanism.
Description
Technical field
The utility model relates to topworks's technology, particularly relates to a kind of technology of electric operator proving installation.
Background technology
In automatic control systems such as power station, oil, iron and steel, chemical industry, oil pipeline, wastewater treatment, all be equipped with various valves, and be equipped with the electric operator for by-pass valve control.
After electric operator and the assembling of supporting valve finish, need test the function of electric operator, to guarantee the functional completeness of electric operator.The functional test of electric operator mainly contains: 1) actuating of relay on the electric operator is tested; 2) action of controlled valve is tested; 3) valve position feedback electric current, the moment feedback current of electric operator feedback are tested; 4) the ESD function (switch interlocking and urgent protection) of electric operator is tested.
At present, electric operator is carried out functional test all needs the tester to reach the spot, at the scene to the manual input test signal of electric operator, and the feedback signal of manual measurement electric operator, this test mode has complicated operation, test speed is slow, and the defective of test accuracy difference, and some test site also exists certain danger.
Summary of the invention
At the defective that exists in the above-mentioned prior art, technical problem to be solved in the utility model provides a kind of easy and simple to handle, and test speed is fast, the electric operator proving installation that test accuracy is high.
In order to solve the problems of the technologies described above, a kind of electric operator proving installation provided by the utility model is characterized in that: comprise single-chip microcomputer, relay test circuit, valve test circuit, current testing circuit, ESD test circuit;
Described single-chip microcomputer is built-in with analog to digital converter, and is provided with relay signal feedback end, valve test signal output terminal, input end of analog signal, ESD test signal output terminal, and communication interface;
Described relay test circuit comprises relay test web member, relay test optocoupler;
Described relay test web member has two relay test lead pin, and these two relay test lead pin are received two input ends of relay test optocoupler respectively;
An output head grounding of described relay test optocoupler, another output terminal is received the relay signal feedback end of single-chip microcomputer;
Described valve test circuit comprises valve test web member, valve test optocoupler, Darlington transistor;
The base stage of described Darlington transistor is received the valve test signal output terminal of single-chip microcomputer, and the emitter of Darlington transistor connects positive supply, the grounded collector of Darlington transistor;
Described valve test web member has a valve test lead pin;
An input end of described valve test optocoupler accesses the emitter of Islington pipe, another input end of valve test optocoupler accesses the emitter of Islington pipe, an output termination positive supply of valve test optocoupler, the valve test lead pin of another output termination valve test web member of valve test optocoupler;
Described current testing circuit comprises testing current web member, testing current optocoupler, and three amplifiers, and three amplifiers in the current testing circuit are respectively first amplifier, second amplifier, the 3rd amplifier;
Described testing current web member has two test lead pin, and one of them test lead pin is positive test lead pin, and another test lead pin is anti-phase test lead pin;
The in-phase input end of described the 3rd amplifier is received the positive test lead pin of testing current web member, the 3rd amplifier's inverting input is received the anti-phase test lead pin of testing current web member, and receive the output terminal of the 3rd amplifier through a RC loop, the output terminal of the 3rd amplifier is received the in-phase input end of second amplifier;
Described testing current optocoupler is a linear analogue optocoupler, the isolation signals negative input end ground connection of testing current optocoupler, the isolation signals positive input terminal of testing current optocoupler is received the output terminal of second amplifier, the feedback signal positive output termination positive supply of testing current optocoupler, the feedback signal negative output terminal of testing current optocoupler is received second amplifier's inverting input, and receive ground through a feedback resistance, the cathode end of testing current optocoupler connects positive supply, and the anode output end of testing current optocoupler is received the in-phase input end of first amplifier;
The output terminal of described first amplifier is received first amplifier's inverting input respectively, and the input end of analog signal of single-chip microcomputer;
Described ESD test circuit comprises that ESD test web member, ESD test optocoupler;
Described ESD test web member has an ESD test lead pin;
An input end grounding of described ESD test optocoupler, another input end is received the ESD test signal output terminal of single-chip microcomputer, an output termination positive supply of ESD test optocoupler, another output terminal is received the ESD test lead pin of ESD test web member.
The electric operator proving installation that the utility model provides, can utilize single-chip microcomputer and long-range host computer to carry out communication, make that the tester can be long-range to the electric operator input test signal, and the feedback signal of remote measurement electric operator, realize the remote testing of electric operator by single-chip microcomputer and each test circuit, operate very easyly that and test speed is fast, the test accuracy height, the tester also needn't treat in test site.
Description of drawings
Fig. 1 is the circuit diagram of the relay test circuit in the electric operator proving installation of the utility model embodiment;
Fig. 2 is the circuit diagram of the valve test circuit in the electric operator proving installation of the utility model embodiment;
Fig. 3 is the circuit diagram of the current testing circuit in the electric operator proving installation of the utility model embodiment;
Fig. 4 is the circuit diagram of the ESD test circuit in the electric operator proving installation of the utility model embodiment.
Embodiment
Below in conjunction with description of drawings embodiment of the present utility model is described in further detail, but present embodiment is not limited to the utility model, every employing analog structure of the present utility model and similar variation thereof all should be listed protection domain of the present utility model in.
A kind of electric operator proving installation that the utility model embodiment provides is characterized in that: comprise single-chip microcomputer, relay test circuit, valve test circuit, current testing circuit, ESD test circuit;
Described single-chip microcomputer is built-in with analog to digital converter, and is provided with relay signal feedback end S1, valve test signal output terminal S2, input end of analog signal S3, ESD test signal output terminal S4, and communication interface;
As shown in Figure 1, described relay test circuit comprises relay test web member J1, relay test optocoupler U1;
Described relay test web member J1 has two relay test lead pin, and these two relay test lead pin are received two input ends of relay test optocoupler U1 respectively;
The output head grounding of described relay test optocoupler U1, another output terminal is received the relay signal feedback end S1 of single-chip microcomputer;
As shown in Figure 2, described valve test circuit comprises valve test web member J2, valve test optocoupler U21, Darlington transistor U20;
The base stage of described Darlington transistor U20 is received the valve test signal output terminal S2 of single-chip microcomputer, and the emitter of Darlington transistor U20 connects positive supply, the grounded collector of Darlington transistor U20;
Described valve test web member J2 has a valve test lead pin;
The input end of described valve test optocoupler U21 accesses the emitter of Islington pipe U20, another input end of valve test optocoupler U21 accesses the emitter of Islington pipe U20, the output termination positive supply of valve test optocoupler U21, the valve test lead pin of another output termination valve test web member J2 of valve test optocoupler U21;
As shown in Figure 3, described current testing circuit comprises testing current web member J3, testing current optocoupler U30, and three amplifiers, and three amplifiers in the current testing circuit are respectively the first amplifier U31, the second amplifier U32, the 3rd amplifier U33;
Described testing current web member J3 has two test lead pin, one of them test lead pin is positive test lead pin AI+, another test lead pin is anti-phase test lead pin AI-, two test lead pin of testing current web member J3 respectively connect an isolation capacitance to ground, and are connected to isolation resistance R32 between two test lead pin of testing current web member J3;
The in-phase input end of described the 3rd amplifier U33 is received the positive test lead pin AI+ of testing current web member J3 through current-limiting resistance R33, R31, and receive ground through a RC loop, the inverting input of the 3rd amplifier U33 is received the anti-phase test lead pin AI-of testing current web member J3 through current-limiting resistance R34, and receive the output terminal of the 3rd amplifier U33 through a RC loop, the output terminal of the 3rd amplifier U33 is received the in-phase input end of the second amplifier U32;
Described testing current optocoupler U30 is a linear analogue optocoupler, the isolation signals negative input end of testing current optocoupler U30 (pin 1) ground connection, the isolation signals positive input terminal of testing current optocoupler U30 (pin 2) is received the output terminal of the second amplifier U32, the feedback signal positive output end of testing current optocoupler U30 (pin 3) connects positive supply, the feedback signal negative output terminal of testing current optocoupler U30 (pin 4) is received the inverting input of the second amplifier U32, and receive ground through a feedback resistance R37, the cathode end of testing current optocoupler U30 (pin 6) connects positive supply, the anode output end of testing current optocoupler U30 (pin 5) is received the in-phase input end of the first amplifier U31, and through pressure transmission resistance R 38, R39 receives ground;
The output terminal of the described first amplifier U31 is received the inverting input of the first amplifier U31, and receives the input end of analog signal S3 of single-chip microcomputer through current-limiting resistance R30;
As shown in Figure 4, described ESD test circuit comprises ESD test web member J4, ESD test optocoupler U4;
Described ESD test web member J4 has an ESD test lead pin;
The input end grounding of described ESD test optocoupler U4, another input end is received the ESD test signal output terminal S4 of single-chip microcomputer, the output termination positive supply of ESD test optocoupler U4, another output terminal is received the ESD test lead pin of ESD test web member J4.
The method that the utility model embodiment tests electric operator is as follows:
With moving of the target relay in the electric operator to be measured, the extension line of static contact is received relay test web member J1 respectively, when the target relay moving, during the static contact adhesive, the input end of electrical testing optocoupler U1 inserts power supply, make the conducting of electrical testing optocoupler U1 optocoupler, the input end of electrical testing optocoupler U1 is pulled to ground, make the relay signal feedback end S1 of single-chip microcomputer receive low level, when the target relay moving, when static contact separates, the input end outage of electrical testing optocoupler U1, electrical testing optocoupler U1 optocoupler also ends immediately, the input end no signal output of electrical testing optocoupler U1, this moment, the relay signal feedback end S1 of single-chip microcomputer was high level (vacant state), single-chip microcomputer changes to detect the action of target relay by the level of relay signal feedback end S1, realizes the test to the target relay;
In each end pin with electric operator to be measured, the control end that is used for the control target valve is received the valve test lead pin of valve test web member J2, the feedback end that is used for feedback target valve valve position electric current is received testing current web member J3, valve test signal output terminal S2 by single-chip microcomputer exports a valve test signal then, make Darlington transistor U20 end, valve test this moment optocoupler U21 conducting, the control end output high level of the output terminal of valve test optocoupler U21 control target valve on the electric operator to be measured, electric operator is namely controlled target valve and is opened, this moment, the valve position electric current of target valve fed back to current testing circuit by testing current web member J3, the 3rd amplifier U33 in current testing circuit is converted to voltage signal with current signal, follow through the second amplifier U32 amplifier successively again, through after testing current optocoupler U30 and the conversion of the first amplifier U31 geometric ratio magnitude of voltage being fed back to the input end of analog signal S3 of single-chip microcomputer, single-chip microcomputer detects the target valve valve position by the feedback voltage value of input end of analog signal S3, judge the switch situation of target valve, and the actual valve place value that will be worth with target valve compares, and judges whether the target valve valve position current feedback value of electric operator is normal;
In each end pin with electric operator to be measured, the feedback end that is used for feedback target parts moment feedback current is received testing current web member J3, the moment feedback current of target component feeds back to current testing circuit by testing current web member J3, the 3rd amplifier U33 in current testing circuit is converted to voltage signal with current signal, follow through the second amplifier U32 amplifier successively again, through after testing current optocoupler U30 and the conversion of the first amplifier U31 geometric ratio magnitude of voltage being fed back to the input end of analog signal S3 of single-chip microcomputer, single-chip microcomputer detects target component moment by the feedback voltage value of input end of analog signal S3, the actual moment values of this value and target component is compared, judge whether the target component moment feedback current value of electric operator is normal;
ESD in the electric operator to be measured end (urgent guard signal) is received the ESD test lead pin of ESD test web member J4, ESD in the electric operator to be measured, open, close the interlocking common port and connect positive supply, high level of ESD test signal output terminal S4 output by single-chip microcomputer, the input end of ESD test optocoupler U4 must be conducted, the output terminal of ESD test optocoupler U4 is transmitted electricity to the ESD end of electric operator to be measured immediately, making electric operator to be measured produce ESD reports to the police, by the feedback conditions of electric operator, whether the ESD that can detect electric operator to be measured is normal;
The tester can utilize long-range host computer and single-chip microcomputer to carry out communication, and is long-range to the electric operator input test signal, and the feedback signal of remote measurement electric operator.
Claims (1)
1. an electric operator proving installation is characterized in that: comprise single-chip microcomputer, relay test circuit, valve test circuit, current testing circuit, ESD test circuit;
Described single-chip microcomputer is built-in with analog to digital converter, and is provided with relay signal feedback end, valve test signal output terminal, input end of analog signal, ESD test signal output terminal, and communication interface;
Described relay test circuit comprises relay test web member, relay test optocoupler;
Described relay test web member has two relay test lead pin, and these two relay test lead pin are received two input ends of relay test optocoupler respectively;
An output head grounding of described relay test optocoupler, another output terminal is received the relay signal feedback end of single-chip microcomputer;
Described valve test circuit comprises valve test web member, valve test optocoupler, Darlington transistor;
The base stage of described Darlington transistor is received the valve test signal output terminal of single-chip microcomputer, and the emitter of Darlington transistor connects positive supply, the grounded collector of Darlington transistor;
Described valve test web member has a valve test lead pin;
An input end of described valve test optocoupler accesses the emitter of Islington pipe, another input end of valve test optocoupler accesses the emitter of Islington pipe, an output termination positive supply of valve test optocoupler, the valve test lead pin of another output termination valve test web member of valve test optocoupler;
Described current testing circuit comprises testing current web member, testing current optocoupler, and three amplifiers, and three amplifiers in the current testing circuit are respectively first amplifier, second amplifier, the 3rd amplifier;
Described testing current web member has two test lead pin, and one of them test lead pin is positive test lead pin, and another test lead pin is anti-phase test lead pin;
The in-phase input end of described the 3rd amplifier is received the positive test lead pin of testing current web member, the 3rd amplifier's inverting input is received the anti-phase test lead pin of testing current web member, and receive the output terminal of the 3rd amplifier through a RC loop, the output terminal of the 3rd amplifier is received the in-phase input end of second amplifier;
Described testing current optocoupler is a linear analogue optocoupler, the isolation signals negative input end ground connection of testing current optocoupler, the isolation signals positive input terminal of testing current optocoupler is received the output terminal of second amplifier, the feedback signal positive output termination positive supply of testing current optocoupler, the feedback signal negative output terminal of testing current optocoupler is received second amplifier's inverting input, and receive ground through a feedback resistance, the cathode end of testing current optocoupler connects positive supply, and the anode output end of testing current optocoupler is received the in-phase input end of first amplifier;
The output terminal of described first amplifier is received first amplifier's inverting input respectively, and the input end of analog signal of single-chip microcomputer;
Described ESD test circuit comprises that ESD test web member, ESD test optocoupler;
Described ESD test web member has an ESD test lead pin;
An input end grounding of described ESD test optocoupler, another input end is received the ESD test signal output terminal of single-chip microcomputer, an output termination positive supply of ESD test optocoupler, another output terminal is received the ESD test lead pin of ESD test web member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320069625 CN203133197U (en) | 2013-02-06 | 2013-02-06 | Test apparatus for electric executing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320069625 CN203133197U (en) | 2013-02-06 | 2013-02-06 | Test apparatus for electric executing mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203133197U true CN203133197U (en) | 2013-08-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320069625 Expired - Fee Related CN203133197U (en) | 2013-02-06 | 2013-02-06 | Test apparatus for electric executing mechanism |
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| Country | Link |
|---|---|
| CN (1) | CN203133197U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103926530A (en) * | 2014-04-08 | 2014-07-16 | 中国计量学院 | Isolated detection circuit for states of relays inside scanning switch |
| CN113064043A (en) * | 2021-03-26 | 2021-07-02 | 深圳群芯微电子有限责任公司 | Optical coupler testing method and system |
-
2013
- 2013-02-06 CN CN 201320069625 patent/CN203133197U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103926530A (en) * | 2014-04-08 | 2014-07-16 | 中国计量学院 | Isolated detection circuit for states of relays inside scanning switch |
| CN113064043A (en) * | 2021-03-26 | 2021-07-02 | 深圳群芯微电子有限责任公司 | Optical coupler testing method and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130814 Termination date: 20160206 |