CN200968980Y - Test circuit for travel switch tester - Google Patents
Test circuit for travel switch tester Download PDFInfo
- Publication number
- CN200968980Y CN200968980Y CN 200620065693 CN200620065693U CN200968980Y CN 200968980 Y CN200968980 Y CN 200968980Y CN 200620065693 CN200620065693 CN 200620065693 CN 200620065693 U CN200620065693 U CN 200620065693U CN 200968980 Y CN200968980 Y CN 200968980Y
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- CN
- China
- Prior art keywords
- circuit
- travel switch
- signal
- comparator circuit
- pressure transducer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a testing circuit for a travel switch tester which comprises a power circuit, a sampling circuit of a pressure transducer, a contrasting circuit with signal amplifying. A transducer pressure contactor of the sampling circuit of the pressure transducer is connected with a travel working point of the travel switch. The transducer detects the information of the acting force which works on the travel switch, transmits the information to the contrasting circuit with signal amplifying. The contrasting circuit contrasts the signals and then makes decision to open or close according to the momentary function of opening or closing of the travel switch, simultaneously makes sure the information of the effective acting force and fulfills the detecting job.
Description
Technical field
The utility model relates to a kind of test circuit, particularly is used for the test circuit of travel switch tester.
Background technology
At present, the test circuit of general travel switch tester just adopts the simple method of testing that substitutes, be that test circuit itself is not at travel switch, but by complicated calculating, judge whether travel switch is qualified, therefore, these ways are more loaded down with trivial details on the one hand, can not reflect very intuitively that on the other hand travel switch is opening and closing the moment result who changes.
The utility model content
The purpose of this utility model is to provide a kind of the realization simply, accurately that the useful effect power of pressure class travel switch is tested, and the test circuit that can intuitively export the result.
The purpose of this utility model can realize by following technical measures: a kind of test circuit that is used for the travel switch tester comprises that power circuit, pressure transducer sample circuit, signal follow the amplification comparator circuit; The cell pressure contact of described pressure transducer sample circuit is connected with the stroke application point of travel switch, sensor is followed the amplification comparator circuit to acting force information transmission to the signal to travel switch, this comparator circuit is according to the travel switch open and close effect of moment, relatively make indication by signal to opening and closing to switch, and determine current effective acting force information simultaneously, finish work for inspection.
The utility model also comprises the pilot lamp display circuit that is used to indicate the travel switch current state, and this display circuit and signal are followed and amplified comparator circuit and is connected, the signal comparative result of response comparator circuit and make the corresponding light demonstration.
The utility model also comprises the digital watch display device that is used for the output of acting force information, and described display device is followed the amplification comparator circuit with signal and is connected.
The slide rail that pressure transducer sample circuit described in the utility model setting is made by milscale, the sense terminal of sensor is carried out the effect of power along described slide rail to travel switch, realizes the record of travel switch parameter.
The utility model utilizes pressure transducer that little acting force of travel switch is detected, and by amplifier comparator circuit and corresponding pilot lamp display circuit, opening and closing travel switch, convert the variation of the voltage of same sampled point to, satisfy the precision of test so on the one hand, can well obtain the parameter of travel switch, solved the indication that the contact of travel switch own changes on the other hand again cleverly, the moment that can catch travel switch to change more accurately is to obtain correct test value.
Description of drawings
Fig. 1 is a theory diagram of the present utility model;
Fig. 2 follows the connecting circuit figure that amplifies comparator circuit and pilot lamp display circuit for signal of the present utility model;
Fig. 3 is the circuit theory diagrams of the utility model specific embodiment 1;
Fig. 4 is the circuit theory diagrams of the utility model specific embodiment 2.
Embodiment
As shown in Figure 1, the utility model hardware partly comprises the digital watch display device that power circuit, pressure transducer sample circuit, signal are followed amplification comparator circuit, pilot lamp display circuit and be used for acting force information is exported.The utility model is connected with the stroke application point of travel switch by the cell pressure contact of pressure transducer sample circuit, sensor is followed the amplification comparator circuit to acting force information transmission to the signal to travel switch, this comparator circuit is according to the travel switch open and close effect of moment, relatively make indication by signal, and determine that simultaneously current effective acting force information is by the output of digital watch display device opening and closing to switch.Described pilot lamp display circuit and signal are followed and are amplified comparator circuit and is connected, the signal comparative result of response comparator circuit and the switching of travel switch switched make the corresponding light demonstration.
The slide rail that pressure transducer sample circuit described in the utility model setting is made by milscale, the sense terminal of sensor is carried out the effect of power along described slide rail to travel switch, and can carry out record to realizing the travel switch parameter simultaneously.When travel switch works, i.e. normally opened contact closure, perhaps normally closed contact disconnects, at this moment, the pilot lamp of pilot lamp display circuit indication current state; And when the closing of contact or disconnection, travel switch is equivalent to lead, perhaps infinitely great resistance, and the voltage on the travel switch just has significant change like this, relatively can obtain current state thereby carry out signal by the voltage-type comparator circuit of being built by amplifier.
As shown in Figure 2, signal is followed amplification ratio and is mainly realized by amplifier OP07 than circuit part, the output terminal of amplifier OP07 connects a light emitting diode by photoelectrical coupler behind triode and reverse diode, like this pilot lamp display circuit is sealed in circuit.In addition, realize that by toggle switch the gold and silver contact switches,, and come out by diode displaying by the break-make of the comparator circuit indication normally-open normally-close contact of realizing by amplifier OP07.
As shown in Figure 3 and Figure 4, be respectively the utility model circuit theory diagrams when 400 pressure and 200 pressure transducers,,, be connected to discharge circuit through pressure transducer all successively from power module; Simultaneously, the pressure contact of pressure transducer is connected with travel switch, and amplifier is connected to each gauge outfit.Wherein, power unit adopts LM317 to realize constant-current circuit, and the stable and reliable of power unit is provided, and makes when powering to pressure sensor module, guarantee the accuracy of the detected pressures of pressure transducer, and the follow circuit that the pressure transducer output signal realizes through amplifier OP07 obtains conditioning.Wherein, just as Fig. 3 and Fig. 4, under the different pressure, 6 of negative input 2 and the output terminals of amplifier OP07 respectively correspondences different variable resistors.Follow and amplify comparator circuit according to the travel switch closure switching of moment, by relatively current effective pressure value result being presented on the digital watch.
Because travel switch belongs to little acting force switch, so 220 or 400 serial high-precision sensors of the adoptable LCM Systems of this pressure transducer Ltd company.When the reviewer operates this instrument, change by viewing lamp, whether be useful effect point, can advance or retreat sensor repeatedly if judging current, to realize than higher accuracy.
Claims (4)
1, a kind of test circuit that is used for the travel switch tester, it is characterized in that: comprise that power circuit, pressure transducer sample circuit, signal follow the amplification comparator circuit, the cell pressure contact of described pressure transducer sample circuit is connected with the stroke application point of travel switch, sensor is followed the amplification comparator circuit to acting force information transmission to the signal to travel switch, this comparator circuit is relatively made indication to opening and closing to switch according to the travel switch open and close effect of moment by signal.
2, the test circuit that is used for the travel switch tester according to claim 1, it is characterized in that: also comprise the pilot lamp display circuit that is used to indicate the travel switch current state, this display circuit and signal are followed and are amplified comparator circuit and is connected, the signal comparative result of response comparator circuit and make the corresponding light demonstration.
3, the test circuit that is used for the travel switch tester according to claim 1 is characterized in that: also comprise the digital watch display device that is used for the output of acting force information, described display device is followed the amplification comparator circuit with signal and is connected.
4, the test circuit that is used for the travel switch tester according to claim 1, it is characterized in that: the slide rail that the setting of described pressure transducer sample circuit is made by milscale, the sense terminal of sensor is carried out the effect of power along described slide rail to travel switch, realizes the record of travel switch parameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620065693 CN200968980Y (en) | 2006-10-16 | 2006-10-16 | Test circuit for travel switch tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620065693 CN200968980Y (en) | 2006-10-16 | 2006-10-16 | Test circuit for travel switch tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200968980Y true CN200968980Y (en) | 2007-10-31 |
Family
ID=38968550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620065693 Expired - Fee Related CN200968980Y (en) | 2006-10-16 | 2006-10-16 | Test circuit for travel switch tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200968980Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102901592A (en) * | 2012-10-11 | 2013-01-30 | 中国计量学院 | Magnetic latching relay contact pressure detection and movement testing device and use method thereof |
| CN103675665A (en) * | 2013-12-13 | 2014-03-26 | 中国西电电气股份有限公司 | Device and method for judging break state of switch through pressure change of switch contact |
| CN104297678A (en) * | 2014-10-28 | 2015-01-21 | 江苏理工学院 | Automatic stroke and pressure testing device for microswitch |
| CN107091733A (en) * | 2017-04-21 | 2017-08-25 | 合益激光设备(深圳)有限公司 | Elastic component detection method and detector, switch detection method and detector |
| CN107748306A (en) * | 2017-09-28 | 2018-03-02 | 国营芜湖机械厂 | A kind of stop switch open locking indicator |
| CN110095713A (en) * | 2018-01-31 | 2019-08-06 | 上海二十冶建设有限公司 | The detection method of the travel switch group of driving is directly contacted by mechanical trip |
-
2006
- 2006-10-16 CN CN 200620065693 patent/CN200968980Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102901592A (en) * | 2012-10-11 | 2013-01-30 | 中国计量学院 | Magnetic latching relay contact pressure detection and movement testing device and use method thereof |
| CN103675665A (en) * | 2013-12-13 | 2014-03-26 | 中国西电电气股份有限公司 | Device and method for judging break state of switch through pressure change of switch contact |
| CN104297678A (en) * | 2014-10-28 | 2015-01-21 | 江苏理工学院 | Automatic stroke and pressure testing device for microswitch |
| CN104297678B (en) * | 2014-10-28 | 2017-02-01 | 江苏理工学院 | Automatic stroke and pressure testing device for microswitch |
| CN106546149A (en) * | 2014-10-28 | 2017-03-29 | 江苏理工学院 | Easy-operating microswitch stroke automatic pressure-testing device |
| CN106546149B (en) * | 2014-10-28 | 2019-04-23 | 江苏理工学院 | Easy-operating microswitch stroke automatic pressure-testing device |
| CN107091733A (en) * | 2017-04-21 | 2017-08-25 | 合益激光设备(深圳)有限公司 | Elastic component detection method and detector, switch detection method and detector |
| CN107748306A (en) * | 2017-09-28 | 2018-03-02 | 国营芜湖机械厂 | A kind of stop switch open locking indicator |
| CN110095713A (en) * | 2018-01-31 | 2019-08-06 | 上海二十冶建设有限公司 | The detection method of the travel switch group of driving is directly contacted by mechanical trip |
| CN110095713B (en) * | 2018-01-31 | 2021-10-01 | 上海二十冶建设有限公司 | Method for detecting travel switch group driven by mechanical travel direct contact |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |