CN102540002A - Method for detecting open circuit and short circuit of line - Google Patents
Method for detecting open circuit and short circuit of line Download PDFInfo
- Publication number
- CN102540002A CN102540002A CN2012100352393A CN201210035239A CN102540002A CN 102540002 A CN102540002 A CN 102540002A CN 2012100352393 A CN2012100352393 A CN 2012100352393A CN 201210035239 A CN201210035239 A CN 201210035239A CN 102540002 A CN102540002 A CN 102540002A
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- circuit
- short
- triode
- light
- line
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- 238000009527 percussion Methods 0.000 claims description 6
- 238000001514 detection method Methods 0.000 abstract description 17
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000003860 storage Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000015556 catabolic process Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000002950 deficient Effects 0.000 description 2
- 238000003745 diagnosis Methods 0.000 description 2
- 230000000087 stabilizing Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N tin hydride Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 238000011179 visual inspection Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Abstract
The invention discloses a device for detecting an open circuit and a short circuit of a line. The device comprises a plurality of light-emitting components connected to a line interface and an electro-acoustic transducer connected with the line interface through a driving circuit; a driving power supply is connected between the driving circuit and the line interface; when the line is in a closed-circuit condition, all the light-emitting components are turned on, the driving circuit is conducted, and the electro-acoustic transducer sounds; when one or multiple lines are in a short-circuit condition, the light-emitting components connected to the short-circuit line are turned off, the driving circuit is cut off, and the electro-acoustic transducer does not sound; and when any line is in an open-circuit condition, all the light-emitting components are turned off, the driving circuit is cut off, and the electro-acoustic transducer does not sound. The device disclosed by the invention has the advantages of simple circuit structure, low manufacturing cost, rapid detection speed, stability and reliability.
Description
Technical field
The present invention relates to a kind of line detection apparatus, especially circuit open circuit, short-circuit detecting device.
Background technology
Along with the fast updating of development of science and technology and electronic product detecting method, people have higher requirement to the wireline inspection technology, not only want to detect open circuit; Also to detect short circuit simultaneously; And require accurately fast, intuitive and convenient is judged trouble spot and fault category rapidly; So that in time fix a breakdown, reduce unnecessary trouble.
The data module series products is unavoidable in regular meeting runs into because of the circuit open circuit due to the wiring board self problem or short circuit, because of welding process in process of production to get rid of tin, connect circuit open circuit or problem of short-circuit due to weldering, the butt-joint.In order to maintain strict control over gate of the quality monitoring; Chipware must detect examination to open circuit, short-circuit capability before being assembled into finished product entirely; But the test item of the open circuit of this product, short circuit detector is comprehensive inadequately at present, can only detect open circuit, can not detect short circuit; Therefore put product in storage and can not accomplish 100% qualification rate, often having returns goods and reprocess product occurs.In order to reduce cost, raise the efficiency, people have higher requirement to the practicality and the rapidity of pick-up unit.Like China national Department of Intellectual Property on August 4th, 2010 disclosed " on-line measuring device of open-circuit fault of power tubes of inverter and detection method "; On September 10th, 2008 disclosed " open circuit detection system and method thereof ", the open fault of its technical scheme in all can only detection line.
Present circuit open circuit, short-circuit detecting device mainly contain the design concept that adopts single chip circuit, and device comprises single chip circuit, sample circuit, output display circuit, or purchase network open loop, short circuit tester directly detect.Its display mode of pick-up unit of utilizing Fundamentals of Mono-Chip Computers to make is liquid crystal display or luminotron, and detection time is short, sound and demonstration statement simultaneously during failure judgement, and convenient test is reliable, but cost is higher, is not suitable for producing in enormous quantities using.Directly buy network open loop, short circuit tester, though omitted manufacturing process, price is high, and detection time is long, and normally whether the voiceless sound prompting leans on the visual inspection product fully, causes production efficiency low.
Summary of the invention
Problem to be solved by this invention just provides a kind of circuit open circuit, short-circuit detecting device, can accurate detection go out open fault and short trouble in the circuit, has the advantages that circuit structure is simple, cost of manufacture is low, reliable and stable.
For solving the problems of the technologies described above; The present invention adopts following technical scheme: a kind of circuit open circuit, short-circuit detecting device; It is characterized in that: comprise the some light-emitting components that are connected on the line interface and pass through the electroacoustic transducer that driving circuit is connected with line interface, be connected with driving power between said driving circuit and the line interface; When circuit was in channel status, light-emitting component was all lighted, driving circuit conducting, electroacoustic transducer sounding; When one or more circuit was in short-circuit condition, the light-emitting component that is connected on the short circuit line extinguished, and driving circuit ends, and electroacoustic transducer is sounding not; When arbitrary circuit was in open-circuit condition, light-emitting component all extinguished, and driving circuit ends, and electroacoustic transducer is sounding not.
Further; Said driving circuit comprises first triode and second triode that is connected in parallel; Be connected with first stabilivolt on the base stage of first triode; Be connected with second stabilivolt between the base stage of the collector of first triode and second triode, the grounded emitter of the emitter of first triode and second triode, the collector of second triode connects electroacoustic transducer; The positive terminal of first stabilivolt and second stabilivolt is connected on the line interface.
Further, the WV of driving power is at 8.5V～9.3V.Can guarantee the entire equipment normal and stable operation, be convenient to the fast detecting between the data module circuit.
Further, said light-emitting component is a light emitting diode.
Further, said line interface adopts the RJ45 port.
Further, said electroacoustic transducer is the news Chinese percussion instrument.
Beneficial effect of the present invention:
1, the used scheme of the present invention short circuit and the open circuit of detection line simultaneously judged the trouble spot and the fault category of circuit through the duty of light-emitting component and electroacoustic transducer, detects fast, accurate, in time to fix a breakdown; Remedied former simple detection device insufficiency, can only detection line the defective of open circuit, it is qualified to guarantee to put in storage product 100%;
2, originally used global function pick-up unit test speed about 5S, test speed of the present invention has shortened original detection time greatly in 1S, improves the fault diagnosis rate, guarantees storage rate;
3, the present invention adopts the Analog Electronics Technique principle, forms in conjunction with the characteristics design of stabilivolt and light emitting diode, has economic and reliable, cost of manufacture is low, exploitativeness is high, stability is good characteristics.
Description of drawings
Below in conjunction with accompanying drawing the present invention is done further explanation:
Fig. 1 is the circuit diagram of the preferred embodiment of the present invention.
Among the figure: 1 line interface, 2 driving circuits, 3 electroacoustic transducers.
Embodiment
A kind of circuit open circuit, short-circuit detecting device comprise the some light-emitting components that are connected on the line interface 1 and pass through the electroacoustic transducer 3 that driving circuit 2 is connected with line interface 1, are connected with driving power between said driving circuit 2 and the line interface 1; When circuit was in channel status, light-emitting component was all lighted, driving circuit 2 conductings, electroacoustic transducer 3 sounding; When one or more circuit was in short-circuit condition, the light-emitting component that is connected on the short circuit line extinguished, and driving circuit 2 ends, and electroacoustic transducer 3 is sounding not; When arbitrary circuit was in open-circuit condition, light-emitting component all extinguished, and driving circuit 2 ends, and electroacoustic transducer 3 is sounding not.
With reference to Fig. 1, the preferred embodiments of the invention:
Driving circuit 2 comprises the first triode Q1 and the second triode Q2 that is connected in parallel; Be connected with the first stabilivolt ZD1 on the base stage of the first triode Q1; Be connected with the second stabilivolt ZD2 between the base stage of the collector of the first triode Q1 and the second triode Q2; The grounded emitter of the emitter of the first triode Q1 and the second triode Q2, the collector of the second triode Q2 connects electroacoustic transducer 3M; The positive terminal of the first stabilivolt ZD1 and the second stabilivolt ZD2 is connected on the line interface 1.The WV of driving power is at 8.5V～9.3V; Can guarantee the entire equipment normal and stable operation, be convenient to the fast detecting between the data module circuit; Light-emitting component is a light emitting diode, and line interface 1 adopts the RJ45 port, and electroacoustic transducer 3 is the news Chinese percussion instrument.
The RJ45 port is 8 line caps, mainly detects the failure condition such as open circuit, short circuit of four lines (1 line, 2 lines, 3 lines, 6 lines) that are used for network service in the RJ45 port.Between 1 line-2 line, connect the first light emitting diode D1; Between 2 lines-3 line, connect the second light emitting diode D2; Between 3 lines-6 line, connect the 3rd light emitting diode D3; Between 6 lines and ground are extreme, be connected the 4th light emitting diode D4, each light emitting diode when lighting tube voltage drop at 1.6～1.7V.
Each bar circuit just often, four light emitting diodes are all lighted, this moment, the A current potential of order was 6.8V, greater than the voltage stabilizing value 5.1V of the second stabilivolt ZD2, made the second stabilivolt ZD2 conducting, drove the second triode Q2 conducting, interrogated the Chinese percussion instrument sounding;
When a line or multi-thread when short circuit occurring, the light emitting diode that correspondence is connected on the short circuit line extinguishes, and the current potential that this moment, A order is lower than 5.1V, and the second stabilivolt ZD2 ends, and the second triode Q2 ends, and interrogates not sounding of Chinese percussion instrument;
When open circuit occurring in any circuit, four light emitting diodes all extinguish, and the current potential that this moment, A was ordered is 9V; Greater than the voltage stabilizing value 8.1V of the first stabilivolt ZD1, make the first stabilivolt ZD1 conducting, drive the first triode Q1 conducting; And the second triode Q2 ends, and the news Chinese percussion instrument is sounding not.
Concrete short circuit, open fault state-detection can be with reference to table 1 (* expression light-emitting component be lighted, and √ representes that light-emitting component extinguishes)
Compare the pick-up unit of present employing single chip circuit; Or buy network open loop, short circuit tester directly detects; The used scheme of the present invention is the short circuit and the open circuit of detection line simultaneously; Judge the trouble spot and the fault category of circuit through the duty of light-emitting component and electroacoustic transducer 3, detect fast, accurately, in time to fix a breakdown; Remedied former simple detection device insufficiency, can only detection line the defective of open circuit, it is qualified to guarantee to put in storage product 100%; Original global function pick-up unit test speed that uses is about 5S, and test speed of the present invention has shortened original detection time greatly in 1S, improve the fault diagnosis rate, guarantees storage rate; The present invention adopts the Analog Electronics Technique principle, forms in conjunction with the characteristics design of stabilivolt and light emitting diode, has economic and reliable, cost of manufacture is low, exploitativeness is high, stability is good characteristics.
Except that above-mentioned preferred embodiment, the present invention also has other embodiment, and those skilled in the art can make various changes and distortion according to the present invention, only otherwise break away from spirit of the present invention, all should belong to the defined scope of accompanying claims of the present invention.
Claims (6)
1. circuit open circuit, short-circuit detecting device; It is characterized in that: comprise the some light-emitting components that are connected on the line interface and pass through the electroacoustic transducer that driving circuit is connected with line interface, be connected with driving power between said driving circuit and the line interface; When circuit was in channel status, light-emitting component was all lighted, driving circuit conducting, electroacoustic transducer sounding; When one or more circuit was in short-circuit condition, the light-emitting component that is connected on the short circuit line extinguished, and driving circuit ends, and electroacoustic transducer is sounding not; When arbitrary circuit was in open-circuit condition, light-emitting component all extinguished, and driving circuit ends, and electroacoustic transducer is sounding not.
2. a kind of circuit open circuit according to claim 1, short-circuit detecting device; It is characterized in that: said driving circuit comprises first triode and second triode that is connected in parallel; Be connected with first stabilivolt on the base stage of first triode; Be connected with second stabilivolt between the base stage of the collector of first triode and second triode, the grounded emitter of the emitter of first triode and second triode, the collector of second triode connects electroacoustic transducer; The positive terminal of first stabilivolt and second stabilivolt is connected on the line interface.
3. a kind of circuit open circuit according to claim 1, short-circuit detecting device, it is characterized in that: the WV of driving power is at 8.5V～9.3V.
4. a kind of circuit open circuit according to claim 1 and 2, short-circuit detecting device, it is characterized in that: said light-emitting component is a light emitting diode.
5. a kind of circuit open circuit according to claim 1 and 2, short-circuit detecting device, it is characterized in that: said line interface adopts the RJ45 port.
6. a kind of circuit open circuit according to claim 1 and 2, short-circuit detecting device is characterized in that: said electroacoustic transducer is the news Chinese percussion instrument.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100352393A CN102540002A (en) | 2012-02-16 | 2012-02-16 | Method for detecting open circuit and short circuit of line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012100352393A CN102540002A (en) | 2012-02-16 | 2012-02-16 | Method for detecting open circuit and short circuit of line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102540002A true CN102540002A (en) | 2012-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012100352393A Pending CN102540002A (en) | 2012-02-16 | 2012-02-16 | Method for detecting open circuit and short circuit of line |
Country Status (1)
| Country | Link |
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| CN (1) | CN102540002A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106574944A (en) * | 2014-08-26 | 2017-04-19 | 欧司朗Oled股份有限公司 | Method for identifying a short circuit in a first light emitting diode element, and optoelectronic subassembly |
| CN107607827A (en) * | 2017-10-23 | 2018-01-19 | 深圳市捷代电子科技有限公司 | Vehicle diagnosis seat safety detection circuit |
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| JPH01262482A (en) * | 1988-04-13 | 1989-10-19 | Takahata Denshi:Kk | Continuity testing device |
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| CN2884217Y (en) * | 2006-03-20 | 2007-03-28 | 佛山市顺德区顺达电脑厂有限公司 | Device for testing quartz joint of network RJ45/RJ11 |
| CN2938129Y (en) * | 2006-08-18 | 2007-08-22 | 杭州华为三康技术有限公司 | Tin interconnection detection circuit, open-circuit detection circuit and welding quiality detection circuit |
| CN101232307A (en) * | 2008-02-21 | 2008-07-30 | 江苏西蒙智控设备有限公司 | Network cable / module connectivity testing device |
| CN101474985A (en) * | 2008-12-11 | 2009-07-08 | 淮安市金恒泰科技有限公司 | Double-mode double-standby intelligent alarm |
| CN102156238A (en) * | 2011-03-15 | 2011-08-17 | 深圳市得润电子股份有限公司 | Device and method for testing short circuit and open circuit of flexible flat cable (FFC) |
| CN202471877U (en) * | 2012-02-16 | 2012-10-03 | 杭州鸿雁智能科技有限公司 | Detection apparatus for open circuit and short circuit |
-
2012
- 2012-02-16 CN CN2012100352393A patent/CN102540002A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1989008850A1 (en) * | 1988-03-08 | 1989-09-21 | Network Systems Builders Limited | Method of and apparatus for testing multi-wire cable |
| JPH01262482A (en) * | 1988-04-13 | 1989-10-19 | Takahata Denshi:Kk | Continuity testing device |
| CN2819230Y (en) * | 2005-08-10 | 2006-09-20 | 北京联合大学 | Cable inspector |
| CN2884217Y (en) * | 2006-03-20 | 2007-03-28 | 佛山市顺德区顺达电脑厂有限公司 | Device for testing quartz joint of network RJ45/RJ11 |
| CN2938129Y (en) * | 2006-08-18 | 2007-08-22 | 杭州华为三康技术有限公司 | Tin interconnection detection circuit, open-circuit detection circuit and welding quiality detection circuit |
| CN101232307A (en) * | 2008-02-21 | 2008-07-30 | 江苏西蒙智控设备有限公司 | Network cable / module connectivity testing device |
| CN101474985A (en) * | 2008-12-11 | 2009-07-08 | 淮安市金恒泰科技有限公司 | Double-mode double-standby intelligent alarm |
| CN102156238A (en) * | 2011-03-15 | 2011-08-17 | 深圳市得润电子股份有限公司 | Device and method for testing short circuit and open circuit of flexible flat cable (FFC) |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106574944A (en) * | 2014-08-26 | 2017-04-19 | 欧司朗Oled股份有限公司 | Method for identifying a short circuit in a first light emitting diode element, and optoelectronic subassembly |
| US10578665B2 (en) | 2014-08-26 | 2020-03-03 | Osram Oled Gmbh | Method for identifying a short circuit in a first light emitting diode element, and optoelectronic subassembly |
| CN107607827A (en) * | 2017-10-23 | 2018-01-19 | 深圳市捷代电子科技有限公司 | Vehicle diagnosis seat safety detection circuit |
| CN107607827B (en) * | 2017-10-23 | 2019-12-06 | 深圳市捷代电子科技有限公司 | Safety detection circuit of automobile diagnosis seat |
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Application publication date: 20120704 |