CN104007356B - Test fixture - Google Patents
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- CN104007356B CN104007356B CN201410214156.XA CN201410214156A CN104007356B CN 104007356 B CN104007356 B CN 104007356B CN 201410214156 A CN201410214156 A CN 201410214156A CN 104007356 B CN104007356 B CN 104007356B
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- time relay
- branch road
- contactor
- coil
- test fixture
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Abstract
The present invention provides a kind of test fixture, for testing capacitor open circuit in circuit or short-circuit test, including the first A.C. contactor, the second A.C. contactor, very first time relay, second time relay and switching device, the coil tandem switching device of very first time relay forms the first branch road, the coil tandem switching device of second time relay forms the second branch road, first branch road and the second branch circuit parallel connection are arranged, and switching device is for controlling very first time relay and the break-make of second time relay respectively；The tip side of very first time relay and the coils connected in series of the first A.C. contactor form the 3rd branch road, and the tip side of second time relay and the coils connected in series of the second A.C. contactor form the 4th branch road, the 3rd branch road and the 4th branch circuit parallel connection and arrange；The tip side of the first A.C. contactor is for connecting with measured capacitance, and the tip side of the second A.C. contactor is in parallel with measured capacitance.The test fixture of the present invention, automaticity is high, and testing efficiency is high.
Description
Technical field
The present invention relates to the electric field that freezes, particularly relate to a kind of for testing capacitor open circuit in circuit or
The test fixture of short-circuit test.
Background technology
Generally, in air-conditioner electrical safety is tested, compressor capacitor, exogenous wind electromechanics hold, endogenous wind
It is to use chopper simulation test that dynamo-electric appearance opens short circuit, a chopper and capacitances in series, a chopper and electricity
Hold parallel connection, when analog compression electromechanics holds, exogenous wind electromechanics holds, inner blower electric capacity opens short circuit, manual operation open circuit
Device, but when compressor capacitor short circuit, immediate current is very big, can produce spark phenomenon, and chopper does not has
There is arc-control device, there is potential safety hazard.
Summary of the invention
In view of the present situation of prior art, it is an object of the invention to provide a kind of test fixture, its automatization's journey
Degree height, improves testing efficiency.For achieving the above object, technical scheme is as follows:
A kind of test fixture, for testing capacitor open circuit in circuit or short-circuit test, described test fixture
Including control circuit, described control circuit include the first A.C. contactor, the second A.C. contactor, first time
Between relay, second time relay and switching device, described in the coil tandem of described very first time relay
Switching device forms the first branch road, and switching device described in the coil tandem of described second time relay forms the
Two branch roads, described first branch road and described second branch circuit parallel connection are arranged；
The tip side of described very first time relay and the coils connected in series of the first A.C. contactor form the 3rd
Road, the tip side of described second time relay forms the 4th with the coils connected in series of described second A.C. contactor
Branch road, described 3rd branch road is arranged with described 4th branch circuit parallel connection, and described switching device is for controlling institute respectively
State very first time relay and the break-make of described second time relay;
The tip side of described first A.C. contactor is used for connecting with measured capacitance, described second A.C. contactor
Tip side in parallel with described measured capacitance.
Wherein in an embodiment, described switching device includes the first chopper and the second chopper, described
First chopper described in the coils connected in series of very first time relay forms described first branch road, described second time
Second chopper described in the coils connected in series of relay forms described second branch road.
Wherein in an embodiment, described first chopper and described second chopper are Self-resetting open circuit
Device.
Wherein in an embodiment, described control circuit is more than two, described first branch road more than two,
Described second branch road is all arranged in parallel, and described 3rd branch road more than two, described 4th branch road are all arranged in parallel.
Wherein in an embodiment, described switching device includes ATMEGA16L single-chip microcomputer, described ATMEGA16L
Any two pin in the 33-40 pin of single-chip microcomputer, one of them pin connect the described very first time continue
The coil of electrical equipment, another pin connects the coil of described second time relay, connects the described very first time
Described pin serial connection one resistance eutral grounding of the coil of relay, connects the coil of described second time relay
Described pin is also connected a resistance eutral grounding.
Wherein in an embodiment, described test fixture also includes power drive chip, connects described first
Between described pin and the coil of described very first time relay of the coil of the time relay, described power is set
Driving chip, connects the described pin of the coil of described second time relay and described second time relay
Coil between described power drive chip is set.
Wherein in an embodiment, described power drive chip is ULN2001, ULN2002, ULN2003
Or ULN2004.
Wherein in an embodiment, described test fixture also includes leading to described ATMEGA16L single-chip microcomputer
The industrial computer that news connect.
Wherein in an embodiment, described very first time relay is the closed type time relay, described
Two time relays are the open type time relay.
The invention has the beneficial effects as follows:
The test fixture of the present invention, the chopper before using A.C. contactor instead, the time relay combines
A.C. contactor controls measured capacitance open circuit in circuit and short circuit, with the big electric current of Small current control, it is to avoid
The potential safety hazard of manual operation, its automaticity is high, and testing efficiency is high.Arrange also by industrial computer
The time run before needing out short circuit, after the time relay runs to the setting time, exchange can be automatically controlled and connect
Tentaculum carries out action, is realized out the action of short circuit by the action of A.C. contactor.Avoid artificial the most dynamic
Make the uncertainty of chopper, and type can be overlapped more test simultaneously, improve testing efficiency further.
Accompanying drawing explanation
Fig. 1 is the control principle schematic diagram of the test fixture embodiment one of the present invention；
Fig. 2 is the circuit theory schematic diagram of the test device embodiment two of the present invention.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and reality
Execute example the test fixture of the present invention is further elaborated.Should be appreciated that described herein specifically
Embodiment is only used for explaining the present invention, is not intended to limit the present invention.
Referring to figs. 1 through Fig. 2, test fixture one embodiment of the present invention, for testing capacitor in circuit disconnected
Road or short-circuit test, test fixture include control circuit, control circuit include the first A.C. contactor KM1,
Two A.C. contactor KM2, very first time relay T1, the second time relay T2 and switching device, first
The coil tandem switching device of time relay T1 forms the first branch road, the coil of the second time relay T2
Concatenation switching device forms the second branch road, the first branch road and the second branch circuit parallel connection and arranges, and switching device is for respectively
Control very first time relay T1 and the break-make of the second time relay T2;Very first time relay T1 touches
The coils connected in series of some end and the first A.C. contactor KM1 forms the 3rd branch road, and the second time relay T2 touches
The coils connected in series of some end and the second A.C. contactor KM2 forms the 4th branch road, and the 3rd branch road and the 4th branch road are also
Connection is arranged；The tip side of the first A.C. contactor KM1 is for connecting with measured capacitance, and described second exchange connects
The tip side of tentaculum KM2 is in parallel with described measured capacitance.The contact of the i.e. first A.C. contactor KM1 is defeated
The contact outfan entering end and the first A.C. contactor KM1 is connected in circuit with described measured capacitance, and second
The contact input of A.C. contactor KM2 connects a pole of described measured capacitance, the second A.C. contactor KM2
Contact outfan connect another pole of described measured capacitance.
Embodiment one
As it is shown in figure 1, switching device includes the first chopper SB1 and the second chopper SB2, the very first time continues
Coils connected in series the first chopper SB1 of electrical equipment T1 forms the first branch road, the coil of the second time relay T2
The second chopper SB2 that connects forms the second branch road, the first branch road and the second branch circuit parallel connection and is connected to external power.
First chopper SB1 is for controlling the break-make of very first time relay T1, and the second chopper SB2 is used for controlling
The break-make of second time relay.Preferably, the first chopper SB1 and the second chopper SB2 is runback
Position chopper.
As a kind of embodiment, control circuit is more than two, the first branch road more than two, second
Road is all arranged in parallel, and the most all of first branch road is all arranged in parallel, and all of second branch road is all arranged in parallel.
3rd branch road more than two, the 4th branch road are all arranged in parallel, that is all of 3rd branch road is all arranged in parallel,
All of 4th branch road is all arranged in parallel.
As a example by two groups of control circuits, the test fixture operation principle of embodiment one is described, first
In group control circuit, the first A.C. contactor KM1 and the second A.C. contactor KM2 is for the first tested electricity
Hold (such as compressor capacitor) test, the tip side of the first A.C. contactor KM1 and the first measured capacitance string
In circuit, the tip side of the second A.C. contactor KM2 and the first measured capacitance parallel connection are in circuit for connection；?
In second group of control circuit, the 3rd A.C. contactor KM3 and the 4th A.C. contactor KM4 is for the second quilt
Survey electric capacity (such as blower fan electric capacity) test, the tip side of the 3rd A.C. contactor KM3 and the second measured capacitance
In circuit, the tip side of the 4th A.C. contactor KM4 and the second measured capacitance parallel connection are in circuit in series connection.
Very first time relay T1 and the 3rd time relay T3 is the closed type time relay, the second time relay
Device T2 and the 4th time relay T4 is the open type time relay, after earth leakage circuit-breaker energising, and first
A.C. contactor KM1 and the 3rd A.C. contactor KM3 Guan Bi, the second A.C. contactor KM2 and the 4th exchange
Catalyst KM4 disconnects, and when the first chopper SB1 disconnects, the very first time, relay T1 started timing, reached
Setting time (such as XX hour/minute/second) very first time relay T1 afterwards controls the first A.C. contactor
KM1 disconnects (open circuit)；When second chopper SB2 disconnects, the second time relay T2 starts timing, reaches
After the setting time, the second time relay T2 controls the second A.C. contactor KM2 Guan Bi (short-circuit)；3rd breaks
When road device SB3 disconnects, the 3rd time relay T3 starts timing, reaches the 3rd time relay after the setting time
Device T3 controls the 3rd A.C. contactor KM3 and disconnects (open circuit)；When 4th chopper SB4 disconnects, when the 4th
Between relay T4 start timing, reach the 4th time relay T4 after the setting time and control the 4th ac contactor
Device KM4 closes (short-circuit)；Wherein, very first time relay T1, the second time relay T2, the 3rd time
Between setting time of relay T3 and the 4th time relay T4 can be identical, it is possible to set according to test needs
The fixed different time.
First chopper SB1, the second chopper SB2, the 3rd chopper SB3, the 4th chopper SB4 are simultaneously
Play the function making the time relay of its correspondence reset, during the i.e. first chopper SB1 Guan Bi, the very first time
Relay T1 reset to before state so that the first A.C. contactor KM1 be also reset to before state；
Second chopper SB2 Guan Bi time, the second time relay T2 reset to before state so that second hand over
Flow the power-up state before catalyst KM2 is also reset to；During the 3rd chopper SB3 Guan Bi, the 3rd time continued
Electrical equipment T3 reset to before state so that the 3rd A.C. contactor KM3 be also reset to before state；
4th chopper SB4 Guan Bi time, the 4th time relay T4 reset to before state so that the 4th hand over
Flow the state before catalyst KM4 is also reset to.Achieve simulation air-conditioner capacitance open circuit, the purpose of short circuit.
When realizing open circuit, fault control operation, after first setting the time of very first time relay T1, press the
One chopper SB1, after the setting time of very first time relay T1 reaches, very first time relay T1 controls
First A.C. contactor KM1 disconnects (open circuit), thus the first measured capacitance open circuit in circuit (open circuit),
I.e. press open circuit；Guan Bi before making the first A.C. contactor KM1 reset to during the first chopper SB1 Guan Bi
State, thus the first measured capacitance the most normally works, then set the second time relay T2 time
Between, press the second chopper SB2, after the setting time of the second time relay T2 reaches, the second time continued
Electrical equipment T2 controls the second A.C. contactor KM2 Guan Bi, thus the short circuit in circuit of the first measured capacitance (is i.e. pressed
Machine short circuit), the second chopper SB2 closes the off-state before making the second A.C. contactor KM2 reset to.
Second group of control circuit controls the former of the second measured capacitance open circuit (blower fan open circuit) and short-circuit (blower fan is short-circuit)
Manage identical with first group, be not described in detail herein.
Embodiment two
As in figure 2 it is shown, switching device includes ATMEGA16L single-chip microcomputer, the 33-40 of ATMEGA16L single-chip microcomputer
Any two pin in pin, one of them pin connects the coil of very first time relay T1, another
Pin connects the coil of the second time relay T2, connects the pin string of the coil of very first time relay T1
Joining a resistance eutral grounding, the pin of the coil connecting the second time relay T2 is also connected a resistance eutral grounding.Fig. 2
In, the 39th pin of ATMEGA16L single-chip microcomputer connects the coil of very first time relay T1, ATMEGA16L
38th pin of single-chip microcomputer connects the coil of the second time relay T2, it is preferable that the connection very first time continues
Between pin and the coil of very first time relay T1 of the coil of electrical equipment T1, power drive chip is set, even
Connect and between the pin of the coil of the second time relay T2 and the coil of the second time relay T2, power is set
Driving chip, arranges power drive core between the coil of the 39th pin and very first time relay T1 in Fig. 2
Sheet, arranges power drive chip, power drive between the coil of the 38th pin and the second time relay T2
Chip is ULN2001, ULN2002, ULN2003 or ULN2004, and in figure, power drive chip is ULN2003A.
Power drive chip is set, improves the stability driving signal further.Very first time relay T1 is normally closed
The type time relay, the second time relay T2 is the open type time relay.
As a kind of embodiment, control circuit is more than two, the first branch road more than two, second
Road is all arranged in parallel, and the 3rd branch road more than two, the 4th branch road are all arranged in parallel.In Fig. 2, control circuit is
Two groups, in second group of control circuit, the 37th pin of ATMEGA16L single-chip microcomputer connects the 3rd time relay
The coil of device T3, the 36th pin connects the coil of the 4th time relay T4, and wherein load 1 is to load 4
Being equal to four A.C. contactors of embodiment one, i.e. load 1 is the first A.C. contactor KM1, and load 2 is
Second A.C. contactor KM2, load 3 is the 3rd A.C. contactor KM3, and load 4 is the 4th A.C. contactor
KM4.The connected mode of the first A.C. contactor KM1, the second A.C. contactor KM2 and the first measured capacitance with
Embodiment one is identical；3rd A.C. contactor KM3, the 4th A.C. contactor KM4 and the company of the second measured capacitance
Connect mode also identical with embodiment one.
As a kind of embodiment, ATMEGA16L single-chip microcomputer is also connected with industrial computer communication, and both can pass through
R232 or R485 communication connect, such that it is able to by industrial computer control very first time relay T1, second time
Between relay T2, the 3rd time relay T3 and the duty of the 4th time relay T4, carry further
The high automaticity of test fixture.
The test fixture test philosophy of embodiment two is identical with embodiment one, repeats the most one by one.
The test fixture of above example, the chopper before using A.C. contactor instead, the time relay
Compressor capacitor, exogenous wind electromechanics appearance, the open circuit of inner blower electric capacity and short circuit is controlled in conjunction with A.C. contactor, real
Showed air-conditioner analog compression electromechanics appearance, exogenous wind electromechanics holds, inner blower electric capacity opens short-circuit test test, with little
Electric current controls big electric current, it is to avoid the potential safety hazard of manual operation, and its automaticity is high, improves test effect
Rate.The time run before needing out short circuit is set also by industrial computer, when the time relay runs to set
After between, A.C. contactor can be automatically controlled and carry out action, realize out short circuit by the action of A.C. contactor
Action.Avoid the uncertainty of artificial manual activity chopper, and type can be overlapped more test simultaneously,
Improve testing efficiency further.
Embodiment described above only have expressed the several embodiments of the present invention, and it describes more concrete and detailed,
But therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that, for this area
Those of ordinary skill for, without departing from the inventive concept of the premise, it is also possible to make some deformation and
Improving, these broadly fall into protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be with appended
Claim is as the criterion.
Claims (10)
1. a test fixture, for testing capacitor open circuit in circuit or short-circuit test, it is characterised in that:
Including control circuit, described control circuit include the first A.C. contactor, the second A.C. contactor,
One time relay, second time relay and switching device, the coil tandem of described very first time relay
Described switching device forms the first branch road, switching device shape described in the coil tandem of described second time relay
Becoming the second branch road, described first branch road and described second branch circuit parallel connection to arrange, described switching device is for respectively
Control described very first time relay and the break-make of described second time relay；
The tip side of described very first time relay forms the 3rd with the coils connected in series of described first A.C. contactor
Branch road, the coils connected in series of the tip side of described second time relay and described second A.C. contactor forms the
Four branch roads, described 3rd branch road is arranged with described 4th branch circuit parallel connection；
The tip side of described first A.C. contactor is used for connecting with measured capacitance, described second A.C. contactor
Tip side in parallel with described measured capacitance.
Test fixture the most according to claim 1, it is characterised in that:
Described switching device includes the first chopper and the second chopper, the coil of described very first time relay
Described first chopper of connecting forms described first branch road, described in the coils connected in series of described second time relay
Second chopper forms described second branch road.
Test fixture the most according to claim 2, it is characterised in that:
Described first chopper and described second chopper are Self-resetting chopper.
Test fixture the most according to claim 2, it is characterised in that:
Described control circuit is more than two, and described first branch road more than two, described second branch road are the most in parallel
Arranging, described 3rd branch road more than two, described 4th branch road are all arranged in parallel.
Test fixture the most according to claim 1, it is characterised in that:
Described switching device includes ATMEGA16L single-chip microcomputer, the 33-40 of described ATMEGA16L single-chip microcomputer
In any two pin in pin, one of them pin connects the coil of described very first time relay, separately
One pin connects the coil of described second time relay, connects the coil of described very first time relay
Described pin serial connection one resistance eutral grounding, the described pin of the coil connecting described second time relay is also connected
One resistance eutral grounding.
Test fixture the most according to claim 5, it is characterised in that:
Also include power drive chip, connect the described pin of coil of described very first time relay with described
Described power drive chip is set between the coil of very first time relay, connects described second time relay
Coil described pin and the coil of described second time relay between described power drive chip is set.
Test fixture the most according to claim 6, it is characterised in that:
Described power drive chip is ULN2001, ULN2002, ULN2003 or ULN2004.
Test fixture the most according to claim 7, it is characterised in that:
Described control circuit is more than two, and described first branch road more than two, described second branch road are the most in parallel
Arranging, described 3rd branch road more than two, described 4th branch road are all arranged in parallel.
Test fixture the most according to claim 5, it is characterised in that:
Also include the industrial computer being connected with described ATMEGA16L microcontroller communication.
10. according to the test fixture described in any one of claim 1-9, it is characterised in that:
Described very first time relay is the closed type time relay, and described second time relay is open type
The time relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410214156.XA CN104007356B (en) | 2014-05-20 | 2014-05-20 | Test fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410214156.XA CN104007356B (en) | 2014-05-20 | 2014-05-20 | Test fixture |
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| Publication Number | Publication Date |
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| CN104007356A CN104007356A (en) | 2014-08-27 |
| CN104007356B true CN104007356B (en) | 2016-08-24 |
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| CN201410214156.XA Active CN104007356B (en) | 2014-05-20 | 2014-05-20 | Test fixture |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106707158A (en) * | 2017-02-22 | 2017-05-24 | 江苏信息职业技术学院 | Time relay calibration device and calibration method thereof |
| CN107315125A (en) * | 2017-06-15 | 2017-11-03 | 南通同洲电子有限责任公司 | The testing tool and method of testing of a kind of four cores power line |
| CN107703390A (en) * | 2017-09-29 | 2018-02-16 | 佛山市顺德区美的电子科技有限公司 | Test fixture |
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| CN200950531Y (en) * | 2006-09-30 | 2007-09-19 | 刘学滨 | Synthesized security control alarm for cooking facilities |
| TW201226932A (en) * | 2010-12-30 | 2012-07-01 | Hon Hai Prec Ind Co Ltd | Detecting circuit for capacitor short-circuit |
| CN103543367A (en) * | 2012-07-16 | 2014-01-29 | 鸿富锦精密工业（深圳）有限公司 | Capacitor leakage current testing circuit |
| CN203233182U (en) * | 2013-04-17 | 2013-10-09 | 国家电网公司 | No-load reactive power compensation device of distribution transformer |
| CN203909199U (en) * | 2014-05-20 | 2014-10-29 | 珠海格力电器股份有限公司 | A test tool |
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Owner name: GELI ELECTRIC APPLIANCE CO., LTD., ZHUHAI Effective date: 20150116 Owner name: GREE (ZHONGSHAN) SMALL HOME APPLIANCES CO., LTD. Free format text: FORMER OWNER: GELI ELECTRIC APPLIANCE CO., LTD., ZHUHAI Effective date: 20150116 |
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Free format text: CORRECT: ADDRESS; FROM: 519070 ZHUHAI, GUANGDONG PROVINCE TO: 528441 ZHONGSHAN, GUANGDONG PROVINCE |
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Effective date of registration: 20150116 Address after: 528441 Zhongshan, the people of the town of public Industrial Avenue North, No. 39, north of the city of Guangdong Applicant after: Gree Electric Appliances (Zhongshan) Small Household Appliances Manufacturing Co., Ltd. Applicant after: GREE ELECTRIC APPLIANCES Inc. OF ZHUHAI Address before: 519070 Guangdong city of Zhuhai Province Qianshan No. six Applicant before: GREE ELECTRIC APPLIANCES Inc. OF ZHUHAI |
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