CN203561732U - Apparatus for detecting service life of electromagnetic relay - Google Patents
Apparatus for detecting service life of electromagnetic relay Download PDFInfo
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- CN203561732U CN203561732U CN201320694312.8U CN201320694312U CN203561732U CN 203561732 U CN203561732 U CN 203561732U CN 201320694312 U CN201320694312 U CN 201320694312U CN 203561732 U CN203561732 U CN 203561732U
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 9
- 238000001514 detection method Methods 0.000 abstract description 7
- 238000013461 design Methods 0.000 abstract description 3
- 238000011161 development Methods 0.000 abstract description 3
- 230000005693 optoelectronics Effects 0.000 abstract 2
- 238000012360 testing method Methods 0.000 description 6
- 230000005291 magnetic effect Effects 0.000 description 3
- 238000012795 verification Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
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Abstract
The utility model discloses an apparatus for detecting the service life of an electromagnetic relay. The apparatus comprises a to-be-detected relay which includes a to-be-detected relay coil and a to-be-detected relay contact. The apparatus further comprises an AC-DC conversion power supply, an optoelectronic coupler, a PLC, a second relay used for closed fault detection, a third relay used for open fault detection, a first counter, a second counter and a third counter. A positive electrode output terminal and a negative electrode output terminal of the AC-DC conversion power supply are in connection with a voltage detection COM port of the PLC via the optoelectronic coupler. The PLC has three execution output COM ports which are in connection with the to-be-detected relay, a second relay coil and a third relay coil respectively and are accessed to the negative electrode output terminal of the AC-DC conversion power supply. The advantages are that the apparatus has a simple circuit structure, is high in reliability, quite low in cost and high in detection efficiency, no longer needs an independent control chip for control, allows simple PLC programming, is convenient to operate, can be recycled and is suitable for many circuit development and design workers to easily detect the service life of a relay.
Description
Technical field
The utility model relates to a kind of electric appliance checking device, specifically refers to a kind of electromagnetic relay life detecting device.
Background technology
Relay is the typical products of electrical equipment.It is a kind of electrical equipment with jump output characteristics transmission of signal, is widely used in controlling and the communications field, and more than its kind, quantity is big, can be rated as the king of electrical equipment.The most typical with electromagnetic type relay in relay, its structure mainly includes coil and contact two large divisions, and its principle of work is very simple.At coil two ends input current or voltage signal, the exciting curent of coil has produced magnetic field, magnetic induction density has bigger numerical in ferromagnetic medium, it is closed that its magnetic flux major part is prolonged core limb, yoke, armature and working gas gap, at armature end face, produce electromagnetic attraction, and then drive contact closure or disconnection.
Along with the development of relay technology and the continuous expansion of range of application, more and more higher to the requirement of the aspects such as the high-performance of relay, long-life, high reliability.Therefore, the detection of relay life has been proposed to requirement higher, that upgrade, in the production run of relay and in product sampling observation, required to detect many parameters.
Existing relay life pick-up unit is generally controlled by control chips such as single-chip microcomputers.For the reliability of mechanical parameter, insulation test and relay, the parameter in serviceable life, if use this existing pick-up unit to carry out that detection time is long, efficiency is low.In addition, this pick-up unit manufacturing cost is very high, and the design engineer who is not suitable for non-relay producer simply tests relay life, in particular for detecting relay.
Summary of the invention
The purpose of this utility model is the shortcoming and defect existing in order to overcome prior art, and provides a kind of easy to detect efficient, the electromagnetic relay life detecting device that cost is low.
For achieving the above object, the technical solution of the utility model is to include relay to be checked, this relay to be checked comprises and needs to be examined relay coil and relay contact to be checked, it is characterized in that: also include ac-dc switching power, photoelectrical coupler, PLC controller, the second relay for closed fault detect, the 3rd relay detecting for open failure, the first counter, the second counter and the 3rd counter, this described PLC controller includes voltage detecting com port, carry out output com port, timer, counter (C1) sum counter (C2), described the second relay comprises the second relay coil and the second relay contact, the 3rd described relay comprises the 3rd relay coil and the 3rd relay contact,
Described ac-dc switching power has live wire input end (L), zero line input end (N), cathode output end and cathode output end, on the power input line of this live wire input end (L), be connected in parallel to relay contact to be checked, the second relay contact and the 3rd relay contact, the first counter described in this, the second counter and the 3rd counter are connected with relay contact to be checked, the second relay contact and the corresponding counting of the 3rd relay contact respectively;
The cathode output end of described DC conversion power and cathode output end are connected on the voltage detecting com port of PLC controller by photoelectrical coupler; The execution output com port of described PLC controller comprises three, and these three execution output com ports are connected and are linked on the cathode output end of DC conversion power with relay coil to be checked, the second relay coil and the 3rd relay coil respectively.
Further arrange is that the output voltage of described ac-dc switching power is 24VDC.
The utility model has the advantages that: circuit is simple, reliability is high, cost is very low, detection efficiency is high, aspect control, no longer need independent control chip, PLC programming is simple, installs easy to operate, and reusable edible, is applicable to vast circuit development and Design personnel the life-span of relay is carried out to simple test.
Below in conjunction with specification drawings and specific embodiments, the utility model is described further.
Accompanying drawing explanation
Fig. 1 the utility model embodiment fundamental diagram.
Embodiment
Below by embodiment, the utility model is specifically described, only for the utility model is further described, can not be interpreted as the restriction to the utility model protection domain.
Embodiment of the present utility model as described in Figure 1, include relay to be checked, this relay to be checked comprises and needs to be examined relay coil KA1 and relay contact KA1' to be checked, also include ac-dc switching power 2, photoelectrical coupler KL1, PLC controller 4(model: omRon SYSMAC CP1E), the second relay for closed fault detect, the 3rd relay detecting for open failure, the first counter 5, the second counter 6 and the 3rd counter 7, this described PLC controller 4 includes voltage detecting com port 41, carry out output com port 42, timer, counter (C1) sum counter (C2), described the second relay comprises the second relay coil KA2 and the second relay contact KA2', the 3rd described relay comprises the 3rd relay coil KA3 and the 3rd relay contact KA3'.
Described ac-dc switching power has live wire input end (L), zero line input end (N), cathode output end and cathode output end, on the power input line of this live wire input end (L), be connected in parallel to relay contact KA1' to be checked, the second relay contact KA2' and the 3rd relay contact KA3', the first counter 5, the second counter 6 and the 3rd counter 7 described in this is connected with the corresponding counting of the 3rd relay contact KA3' with relay contact KA1' to be checked, the second relay contact KA2' respectively;
The cathode output end of described DC conversion power and cathode output end are connected on the voltage detecting com port 41 of PLC controller by photoelectrical coupler KL1; The execution output com port of described PLC controller comprises three, and these three execution output com ports are connected and are linked on the cathode output end of DC conversion power with the 3rd relay coil KA3 with relay coil KA1 to be checked, the second relay coil KA2 respectively.
Principle of work of the present utility model is: by PLC, to relay to be checked, (can be many, its quantity depends on the output current of load and load power source) coil KA1 closure signal, simultaneously the timer of PLC is opened and is started timing, arriving T1 (determines according to the examination criteria of relay coil KA1 to be checked, be generally 0.1s) constantly, it is 0V that PLC scanning records photoelectrical coupler KL1 receiving-end voltage, wherein the effect of photoelectrical coupler KL1 is to dwindle to detect relay contact opening/closing time error and the interference of isolation load voltage, now think that relay contact KA1' to be checked is for disconnecting, it is 24VDC that PLC gives closed fault verification relay coil KA2(coil voltage) closure signal and relay coil KA1 to be checked power-off, closed fault verification relay contact KA2' is closed, counter 2 countings once, PLC internal counter C1 counting once, (closed fault)
It is 24V that PLC scanning records photoelectrical coupler KL1 receiving-end voltage, thinks that relay contact KA1' to be checked is for closed; After closure maintains turn-on time, PLC is to relay coil KA1 cut-off signal to be checked, simultaneously PLC timer is opened and is started timing, arriving T2 (determines according to the examination criteria of relay K A1 to be checked, be generally 0.1s) constantly, if it is 0V that PLC scanning records photoelectrical coupler KL1 receiving-end voltage, think that relay contact KA1' to be checked is for disconnecting, counter 1 counting is once, PLC internal counter C2 counting once, represents relay regular event to be checked once;
It is 24V that PLC scanning records photoelectrical coupler KL1 receiving-end voltage, think that relay contact KA1' to be checked is for closed, now PLC judges that to open failure relay coil KA3(coil voltage is 24VDC) closure signal and relay coil KA1 to be checked power-off, open failure judges that relay contact KA3' is closed, counter 3 countings once, once, C2 also counts once PLC internal counter C1 counting.
One-off finishes rear PLC internal counter C1, C2 and judges once, if any one reaches set point number in C1, C2, wherein C1 set point number is determined according to the examination criteria of relay to be checked, be generally 5 times, and the number of times that C2 sets is determined according to the testing conditions of relay to be checked, test stops, if not test circulation successively.
Experimental example: 12 relays are detected simultaneously, detect voltage 14V, detect electric current 6A, 1sON14s0FF, coil voltage 12V, requires the life-span 100,000 times, Halogen lamp LED load, fault verification benchmark is that after a, connection 0.5s, loose contact is judged; After b, disconnection 0.5s, melting and judging, fault sum is no more than 5 times, and experimental result is as follows:
| Group number | 1 | 2 | 3 | 4 | 5 | 6 |
| Actual life | 100000 times | 89507 times | 92512 times | 100000 times | 100000 times | 100000 times |
| Fault type | / | A:2 time, b:3 time | A:1 time, b:4 time | / | / | / |
| |
7 | 8 | 9 | 10 | 11 | 12 |
| Actual life | 83125 times | 100000 times | 90110 times | 100000 times | 100000 times | 94153 times |
| Fault type | A:5 time, b:0 time | / | A:3 time, b:2 time | / | / | A:2 time, b:3 time |
Claims (2)
1. an electromagnetic relay life detecting device, include relay to be checked, this relay to be checked comprises and needs to be examined relay coil and relay contact to be checked, it is characterized in that: also include ac-dc switching power, photoelectrical coupler, PLC controller, the second relay for closed fault detect, the 3rd relay detecting for open failure, the first counter, the second counter and the 3rd counter, this described PLC controller includes voltage detecting com port, carry out output com port, timer, counter (C1) sum counter (C2), described the second relay comprises the second relay coil and the second relay contact, the 3rd described relay comprises the 3rd relay coil and the 3rd relay contact,
Described ac-dc switching power has live wire input end (L), zero line input end (N), cathode output end and cathode output end, on the power input line of this live wire input end (L), be connected in parallel to relay contact to be checked, the second relay contact and the 3rd relay contact, the first counter described in this, the second counter and the 3rd counter are connected with relay contact to be checked, the second relay contact and the corresponding counting of the 3rd relay contact respectively;
The cathode output end of described DC conversion power and cathode output end are connected on the voltage detecting com port of PLC controller by photoelectrical coupler; The execution output com port of described PLC controller comprises three, and these three execution output com ports are connected and are linked on the cathode output end of DC conversion power with relay coil to be checked, the second relay coil and the 3rd relay coil respectively.
2. a kind of electromagnetic relay life detecting device according to claim 1, is characterized in that: the output voltage of described ac-dc switching power is 24VDC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320694312.8U CN203561732U (en) | 2013-11-05 | 2013-11-05 | Apparatus for detecting service life of electromagnetic relay |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320694312.8U CN203561732U (en) | 2013-11-05 | 2013-11-05 | Apparatus for detecting service life of electromagnetic relay |
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| CN203561732U true CN203561732U (en) | 2014-04-23 |
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| CN201320694312.8U Expired - Lifetime CN203561732U (en) | 2013-11-05 | 2013-11-05 | Apparatus for detecting service life of electromagnetic relay |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104833912A (en) * | 2015-03-13 | 2015-08-12 | 江苏永钢集团有限公司 | Fault detection system for master switch based on PLC system |
| CN108279372A (en) * | 2017-01-05 | 2018-07-13 | 武汉英康汇通电气有限公司 | High-voltage DC contactor mechanically and electrically service life assessment test system and method |
| CN108445387A (en) * | 2018-05-30 | 2018-08-24 | 江苏七维测试技术有限公司 | A kind of electromagnetic relay reliability test box |
| CN109324287A (en) * | 2018-11-22 | 2019-02-12 | 深圳市中晶微电子技术开发有限公司 | A kind of electromagnetic relay contact closure detection circuit |
| CN112924778A (en) * | 2021-01-25 | 2021-06-08 | 广东机电职业技术学院 | Tester and testing method for reliability of electric appliance |
| CN113777482A (en) * | 2021-09-23 | 2021-12-10 | 中国南方电网有限责任公司超高压输电公司广州局 | Electromagnetic relay service life assessment method |
-
2013
- 2013-11-05 CN CN201320694312.8U patent/CN203561732U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104833912A (en) * | 2015-03-13 | 2015-08-12 | 江苏永钢集团有限公司 | Fault detection system for master switch based on PLC system |
| CN104833912B (en) * | 2015-03-13 | 2018-02-02 | 江苏永钢集团有限公司 | The fault detection system of control switch based on PLC system |
| CN108279372A (en) * | 2017-01-05 | 2018-07-13 | 武汉英康汇通电气有限公司 | High-voltage DC contactor mechanically and electrically service life assessment test system and method |
| CN108445387A (en) * | 2018-05-30 | 2018-08-24 | 江苏七维测试技术有限公司 | A kind of electromagnetic relay reliability test box |
| CN108445387B (en) * | 2018-05-30 | 2023-09-19 | 江苏七维测试技术有限公司 | Electromagnetic relay reliability test box |
| CN109324287A (en) * | 2018-11-22 | 2019-02-12 | 深圳市中晶微电子技术开发有限公司 | A kind of electromagnetic relay contact closure detection circuit |
| CN112924778A (en) * | 2021-01-25 | 2021-06-08 | 广东机电职业技术学院 | Tester and testing method for reliability of electric appliance |
| CN112924778B (en) * | 2021-01-25 | 2023-12-05 | 广东机电职业技术学院 | Tester and test method for reliability of electric appliance |
| CN113777482A (en) * | 2021-09-23 | 2021-12-10 | 中国南方电网有限责任公司超高压输电公司广州局 | Electromagnetic relay service life assessment method |
| CN113777482B (en) * | 2021-09-23 | 2023-05-16 | 中国南方电网有限责任公司超高压输电公司广州局 | Electromagnetic relay service life assessment method |
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| C14 | Grant of patent or utility model | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20220130 Address after: 325025 No. 308, Binhai fifth road, Wenzhou Economic and Technological Development Zone, Wenzhou City, Zhejiang Province Patentee after: Zhejiang Fuda alloy material technology Co.,Ltd. Address before: 325000 No. 518, Binhai 4th Road, Binhai Park, Wenzhou Economic Development Zone, Zhejiang Province Patentee before: FUDA ALLOY MATERIALS Co.,Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140423 |