CN103076534B - Bar connector electric on-off test method and bar connector electric on-off test circuit - Google Patents
Bar connector electric on-off test method and bar connector electric on-off test circuit Download PDFInfo
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- CN103076534B CN103076534B CN201310000554.7A CN201310000554A CN103076534B CN 103076534 B CN103076534 B CN 103076534B CN 201310000554 A CN201310000554 A CN 201310000554A CN 103076534 B CN103076534 B CN 103076534B
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Abstract
The invention relates to a bar connector electric on-off test method and a bar connector electric on-off test circuit. A good bar connector is connected with a bar connector to be tested according to the method, if the bar connector to be tested is consistent with the good bar connector in wiring, lines are in a one-to-one correspondence communication state, and otherwise, the lines cannot realize the one-to-one correspondence communication state. Therefore, whether the connecting line of the bar connector is correct or not can be judged. Low-frequency pulse current is adopted for sequentially passing through each path, the time-sharing passing is realized, the low-frequency pulse current passes through a bicolor light emitting diode, and if the color inconsistence occurs, the short circuit problem can be detected. The bicolor light emitting diode is used for displaying the on-off state of each path of current, a switch is in charge of vacancy communication of the bar connector so that the observation is convenient, and a buzzer Y is in charge of catching the discontinuous disconnection state caused by poor circuit contact. The test method and the test circuit have the advantages that the ideas of universality, reliability and high efficiency are realized, the test can be carried out on various devices, in addition, the expansion capability is high, and the practicability is wide.
Description
Technical field
The present invention relates to electronic circuit field, the electric on off test method of especially a kind of bar connector and test circuit thereof.
Background technology
Bar connector is a classification of rectangular connector, basic structure is bar shaped, contact element is arranged as single, and there is the connector of bar shaped mating surface, be blocked between place or isolated obstructed circuit in circuit, erect the bridge of communication, thus make current flowing, make the function that circuit realiration is predetermined.
Because bar shaped unitor electrically connects more complicated, have and connect in order; Also have intersection or partial intersection to connect, its on off test is without general testing tool, and key is do not have a kind of general method of testing.
Summary of the invention
The technical problem to be solved in the present invention is: propose the complementary connection principle of a kind of employing and solve access problems; " timesharing is passed through " is adopted to detect short circuit problem; Synchronous detection is adopted to judge the electric on off test method of the bar connector of loose contact problem and test circuit thereof.
The technical solution adopted in the present invention is: a kind of electric on off test method of bar connector, comprises the following steps:
1) a good connection pin for bar connector and the connection pin of tested bar connector are connected one to one by two analog switches, and make switch be in off-state;
2) form square-wave generator by one of them time base circuit of dual time base circuit, generate square wave;
3) by step 2) square wave that produces is connected to the input end of the good bar connector in step 1), and the output terminal from tested bar connector exports by described square-wave signal;
4) square-wave signal one tunnel exported in step 3) is through step 2) described in dual time base circuit in another time base circuit detect whether lack one or several high level ripple, with this judge the open circuit of bar connector, misconnection or loose contact time situation, and pass through buzzer warning; Square-wave signal is reduced to corresponding LED lamplight signal through the 3rd analog switch by another road of square-wave signal simultaneously exported in step 3), according to LED lamplight signal judge the open circuit of bar connector, misconnection or loose contact time situation.
Due to the too high meeting of frequency, to cause LED to show dimmed, and the too low meeting of frequency causes LED to glimmer aggravation, therefore, step 2 of the present invention) in square wave frequency be 290 ~ 310Hz.
In step 1) of the present invention, if the pin of bar connector does not stick with all sockets, then switch is all pushed on-state by empty place.
Conveniently observe, in step 4) of the present invention, described LED is two-color diode.
If LED of the present invention is shown as brown, then tested bar connector is normal; Be shown as non-brown if some, then the bar connector service interruption of relevant position; If there have two lamps or paired lamp to be shown as to be non-brown, then tested bar connector wiring has dislocation.
In order to ensure the normal work of circuit, the operating voltage of method of testing of the present invention is not less than 11 volts.
Meanwhile, present invention also offers the test circuit that a kind of electric on off test method of bar connector uses, comprise analog switch and a dual time base circuit of more than three or three; The pin of described wherein two analog switches connects one to one and switch is in off-state; Described dual time base circuit produces square-wave signal and exports high level signal by binary counter and be connected to the input end of first analog switch; The high level signal that first analog switch exports is reduced into square-wave signal by described second analog switch; Second analog switch connects dual time base circuit and the 3rd analog switch, and the pin of corresponding second analog switch of pin of the 3rd described analog switch is connected with LED.Described dual time base circuit is also connected with hummer.Circuit of the present invention can carry out extend testing circuit number, as 25 cores, 50 core bar connectors etc. by the quantity increasing analog switch.Change bar connector socket, can other connector of extend testing, as D type, round connector etc.
Principle of work of the present invention is: connected by said method with tested bar shaped unitor by a good bar shaped unitor, if the bar shaped unitor wiring of tested bar shaped unitor also with good is consistent, then circuit is one_to_one corresponding UNICOM, otherwise, then can not be communicated with in one_to_one corresponding.So, just can judge that whether the wiring of bar shaped unitor is correct.By adopting low frequency pulse current to sequentially pass through each path, realize " timesharing is passed through ", by dichromatic LED, inconsistent if there is color, just can detect short circuit problem.Show each road current switching state by dichromatic LED, switch is responsible for bar shaped unitor room UNICOM, to facilitate observation, hummer Y charge capture because of electrical contact bad time occur interrupted " obstructed " state.
The invention has the beneficial effects as follows: present invention achieves general, reliable, efficient theory, can test for various device, and extended capability is strong, practicality is wide.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is elementary diagram of the present invention;
Fig. 2 is circuit theory diagrams of the present invention.
Embodiment
The present invention is further detailed explanation with preferred embodiment by reference to the accompanying drawings now.These accompanying drawings are the schematic diagram of simplification, only basic structure of the present invention are described in a schematic way, and therefore it only shows the formation relevant with the present invention.
Connected by the method for Fig. 1 with tested bar shaped unitor by one good bar shaped unitor, if the bar shaped unitor wiring of tested bar shaped unitor also with good is consistent, then circuit is one_to_one corresponding UNICOM, otherwise, then can not be one_to_one corresponding UNICOM.So, just can judge that whether the wiring of bar shaped unitor is correct.
Test circuit as shown in Figure 2, by one of them time base circuit of dual time base circuit LM556, form a square-wave generator, (it is dimmed that the too high meeting of frequency causes the LED of D3 ~ D18 to show to the square wave of generation about 300 hertz, the too low meeting of frequency causes LED flicker aggravation), export the CP port (1 pin) of 7 binary counter CD4024 from the 9th pin to, produce gating signal by CD4024, be supplied to three 16 analog switch CD4067.
First left CD4067 exports high level according to the gating signal order of CD4024 respectively from 0 ~ 15 delivery outlet, bar connector connecting test is supplied to by socket JK1, JK2, JK3, if bar connector does not stick with all sockets, then the K switch of corresponding empty place is all pushed on-state (other are off-state, in order to test strip connector).The high level signal that first CD4067 exports is reduced into square-wave signal and exports from the 1st pin by second left CD4067.
The square-wave signal of second CD4067 output is detected by follow-up two parts, the first via by another time base circuit of LM556 detect square wave and signal whether lack some or several high level ripple (bar connector open circuit, misconnection and loose contact time situation), noble potential is exported when 5th pin of time base circuit is normal, hummer Y not ring, when lacking one or more high level in the square-wave signal that second CD4067 exports, select suitable capacitor C4 value, make time base circuit the 5th pin saltus step become electronegative potential, buzzer rings is reported to the police, square-wave signal is reduced to corresponding LED lamplight signal by the 3rd CD4067 by the second tunnel, have passed three analog switches and hummer creates larger voltage drop due to supply voltage, therefore by a triode BG2, supply voltage is introduced with the brightness strengthening LED lamplight, time normal, LED display is brown, if some lamps are shown as non-brown, then represent the bar connector service interruption of relevant position, if there have two lamps or paired lamp to be shown as to be non-brown, then likely bar connector wiring has dislocation, LED is two-color diode, its another pin is by connecting to " D3 ~ D18 " line is corresponding on the left of second CD4067, if there is short circuit phenomenon (plastic housing " perforation " the adjacent two wires of bar connector, chain mark etc. during crimping), two lamps or paired lamp then must be had in D3 ~ D18 to send non-brown light.
The just the specific embodiment of the present invention described in above instructions, various illustrating is not construed as limiting flesh and blood of the present invention, person of an ordinary skill in the technical field after having read instructions can to before described embodiment make an amendment or be out of shape, and do not deviate from essence of an invention and scope.
Claims (6)
1. the electric on off test method of bar connector, is characterized in that comprising the following steps:
1) a good connection pin for bar connector and the connection pin of tested bar connector are connected one to one by two analog switches, and make switch be in off-state;
2) form square-wave generator by one of them time base circuit of dual time base circuit, generate square wave;
3) by step 2) square wave that produces is connected to step 1) in the input end of good bar connector, the output terminal from tested bar connector exports by described square-wave signal; Test circuit comprises analog switch and a dual time base circuit of more than three or three; Wherein the pin of two analog switches connects one to one and switch is in off-state; Described dual time base circuit produces square-wave signal and exports high level signal by binary counter and be connected to the input end of first analog switch; The high level signal that first analog switch exports is reduced into square-wave signal by second analog switch; Second analog switch connects dual time base circuit and the 3rd analog switch, and the pin of corresponding second analog switch of pin of the 3rd described analog switch is connected with LED;
4) step 3) in export square-wave signal one tunnel through step 2) described in dual time base circuit in another time base circuit detect whether lack one or several high level ripple, with this judge the open circuit of bar connector, misconnection or loose contact time situation, and pass through buzzer warning; Simultaneously step 3) in another road of square-wave signal of exporting through the 3rd analog switch, square-wave signal is reduced to corresponding LED lamplight signal, according to LED lamplight signal judge the open circuit of bar connector, misconnection or loose contact time situation; If described LED is shown as brown, then tested bar connector is normal; Be shown as non-brown if some, then the bar connector service interruption of relevant position; If there have two lamps or paired lamp to be shown as to be non-brown, then tested bar connector wiring has dislocation.
2. the electric on off test method of bar connector as claimed in claim 1, is characterized in that: described step 2) in square wave frequency be 290 ~ 310Hz.
3. the electric on off test method of bar connector as claimed in claim 1, is characterized in that: described step 1) in, if the pin of bar connector does not stick with all sockets, then switch is all pushed on-state by empty place.
4. the electric on off test method of bar connector as claimed in claim 1, is characterized in that: described step 4) in, described LED is two-color diode.
5. the electric on off test method of bar connector as claimed in claim 1, is characterized in that: the operating voltage of described method of testing is not less than 11 volts.
6. the electric on off test method of bar connector as claimed in claim 1, is characterized in that: described dual time base circuit is also connected with hummer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310000554.7A CN103076534B (en) | 2013-01-04 | 2013-01-04 | Bar connector electric on-off test method and bar connector electric on-off test circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310000554.7A CN103076534B (en) | 2013-01-04 | 2013-01-04 | Bar connector electric on-off test method and bar connector electric on-off test circuit |
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| CN103076534A CN103076534A (en) | 2013-05-01 |
| CN103076534B true CN103076534B (en) | 2015-04-01 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105891651B (en) * | 2015-01-16 | 2019-12-10 | 恩智浦美国有限公司 | Low power open circuit detection system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59203970A (en) * | 1983-05-06 | 1984-11-19 | Olympus Optical Co Ltd | Connection detector |
| JPS6254177A (en) * | 1985-08-05 | 1987-03-09 | Fujitsu Ltd | Method of testing connection of connector of coaxial line |
| JPH08293354A (en) * | 1995-04-20 | 1996-11-05 | Nissan Motor Co Ltd | Connector fitting detecting system |
| JPH10239380A (en) * | 1997-02-27 | 1998-09-11 | Oki Electric Ind Co Ltd | Connector coupling detector |
| CN101051067A (en) * | 2006-04-03 | 2007-10-10 | 航天科工防御技术研究试验中心 | Comprehensive detection control device design method for electric connector |
| CN101769976A (en) * | 2008-12-26 | 2010-07-07 | 鸿富锦精密工业（深圳）有限公司 | Connector detection system |
| CN201917630U (en) * | 2010-12-15 | 2011-08-03 | 中国北车集团大连机车车辆有限公司 | Testing device for harness connector |
-
2013
- 2013-01-04 CN CN201310000554.7A patent/CN103076534B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59203970A (en) * | 1983-05-06 | 1984-11-19 | Olympus Optical Co Ltd | Connection detector |
| JPS6254177A (en) * | 1985-08-05 | 1987-03-09 | Fujitsu Ltd | Method of testing connection of connector of coaxial line |
| JPH08293354A (en) * | 1995-04-20 | 1996-11-05 | Nissan Motor Co Ltd | Connector fitting detecting system |
| JPH10239380A (en) * | 1997-02-27 | 1998-09-11 | Oki Electric Ind Co Ltd | Connector coupling detector |
| CN101051067A (en) * | 2006-04-03 | 2007-10-10 | 航天科工防御技术研究试验中心 | Comprehensive detection control device design method for electric connector |
| CN101769976A (en) * | 2008-12-26 | 2010-07-07 | 鸿富锦精密工业（深圳）有限公司 | Connector detection system |
| CN201917630U (en) * | 2010-12-15 | 2011-08-03 | 中国北车集团大连机车车辆有限公司 | Testing device for harness connector |
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| CN103076534A (en) | 2013-05-01 |
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Effective date of registration: 20201123 Address after: No.1-10, 3rd floor, building 1, No.1, Tidu street, Qingyang District, Chengdu, Sichuan 610000 Patentee after: Sichuan fish claw Network Technology Co.,Ltd. Address before: 213164 No. 6, Xin Xin Dong Lu, Wujin District, Jiangsu, Changzhou Patentee before: CHANGZHOU INSTITUTE OF MECHATRONIC TECHNOLOGY Effective date of registration: 20201123 Address after: South end of Guangzhou Road West of Binhe office, Dingtao District, Heze City, Shandong Province Patentee after: HEZE SANLEI PLASTIC INDUSTRY CO.,LTD. Address before: No.1-10, 3rd floor, building 1, No.1, Tidu street, Qingyang District, Chengdu, Sichuan 610000 Patentee before: Sichuan fish claw Network Technology Co.,Ltd. |
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Denomination of invention: Test method and circuit for electrical on-off of strip connector Effective date of registration: 20221213 Granted publication date: 20150401 Pledgee: China Construction Bank Corporation Heze Dingtao sub branch Pledgor: HEZE SANLEI PLASTIC INDUSTRY CO.,LTD. Registration number: Y2022980027332 |