CN2864704Y - Circuit detecting instrument - Google Patents
Circuit detecting instrument Download PDFInfo
- Publication number
- CN2864704Y CN2864704Y CNU2005200448438U CN200520044843U CN2864704Y CN 2864704 Y CN2864704 Y CN 2864704Y CN U2005200448438 U CNU2005200448438 U CN U2005200448438U CN 200520044843 U CN200520044843 U CN 200520044843U CN 2864704 Y CN2864704 Y CN 2864704Y
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- test
- interface
- wireline
- cable
- circuit
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- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The utility model discloses a circuit tester, comprising a host with a control corn used to process the signal and instruction, a man-machine interface used to interact with the user, a cable testing interface connected with the tested cable and connected with the control corn through special I/O interface chip, a power source for powering the circuit tester. The invention also comprises a terminal adaptor as one inactive element, comprising a voltage regulator and a plurality of diodes, and a group of testing interfaces relative to the cable testing interfaces. In the test, the host, tested cable and the terminal adaptor form the testing circuit, in the break or short circuit conditions, the invention can supply different voltages to connect or cut off the voltage regulator or the diodes, to test the cable.
Description
Technical field
The utility model relates to the wireline test technology, more particularly, relates to the line tester that a kind of test cable is used.
Background technology
In everyday devices maintenance, run into through regular meeting that opening circuit appears in various cables and the situation of short circuit.Though this is a glitch, but find out problematic cable core and need to expend a large amount of time and manpower, for example in the workshop during commonly used INTERBUS bus cable generation problem, need 2 maintenance personals in the cooperation of the two ends of cable routinely, find the cable core that goes wrong by the detection of wire.For this reason, just need a kind of equipment to come fast detecting to go out to open circuit or the cable core of short circuit as maintenance department, and this testing apparatus must be fit to the actual conditions of workshop appliance.
The utility model content
The purpose of this utility model provide a kind of can fast detecting opening circuit or the pick-up unit of short trouble in the cable core.
According to the utility model, a kind of wireline inspection instrument is provided, comprising:
Tester main frame, described tester main frame comprise,
The control core is used for the processing of signal and instruction;
Man-machine interface is carried out alternately with the user;
The wireline test interface connects cable under test, and links to each other with described control core by special-purpose I/O interface chip;
Power supply is for the wireline inspection instrument provides power supply;
Terminal adapter is passive component.Comprise stabilivolt and several diodes, also comprise one group with the tester main frame on the corresponding test interface of wireline test interface;
During test, described tester main frame, cable under test and terminal adapter constitute test loop; Make stabilivolt and diode current flow or partition by given different voltage in test both opens during with short circuit, the fault whether the test cable under test exists short circuit or open circuit.
According to an embodiment of the present utility model, described control core is single chip computer AT 89C51; Described man-machine interface comprises display screen and function button; Described wireline test interface can connect different special I/O interface chip; Described power supply is a rechargeable battery, and comprises the stabilized voltage supply interface.
According to an embodiment of the present utility model, when carrying out short-circuit test, the instruction of control core switches to low-voltage V2; This moment, described tester main frame sent negative pulse successively at the wireline test interface, because terminal adapter is blocked, if do not receive undersuing at the receiving end of tester main frame, showing does not have short-circuit conditions to deposit in the cable; As receiving undersuing at certain receiving end, showing has short-circuit conditions to exist in the cable;
According to an embodiment of the present utility model, when carrying out out of circuit test, the instruction of control core switches to high voltage V1; This moment, described tester main frame sent negative pulse successively at the wireline test interface, made stabilivolt D by diode in terminal adapter
WReverse breakdown, the pipe of stabilivolt are pressed and are stabilized in V
DW, the pulse height that the receiving end of tester main frame is received is V1-V
DW, think that so cable is intact; If do not receive that at the receiving end of tester main frame amplitude is V1-V
DWPulse, then show to exist in the pairing cable of wireline test port and open circuit.
According to an embodiment of the present utility model, described display screen can show 2 row English text and numerals simultaneously, with function menu, information and test result.
According to an embodiment of the present utility model, described function menu can allow the user select to carry out out of circuit test, short-circuit test, choose linear, the single electric wire test of the used cable of test.
According to an embodiment of the present utility model, described wireline test interface comprises general-purpose interface and special purpose interface, described general-purpose interface can connect the cable of all size by the translation interface of band crocodile chuck in the annex, and described special purpose interface comprises INTERBUS bus interface, 4 core sensor interfaces and netting twine interface.
According to an embodiment of the present utility model, can charge by the power supply of stabilized voltage supply interface or to battery.
According to an embodiment of the present utility model, but wireline test interface received signal on the described tester main frame or transmission signal.
According to an embodiment of the present utility model, described line tester also comprises annex, and described annex comprises the translation interface of band crocodile chuck, can connect 17 core cables at most.
According to an embodiment of the present utility model, the wireline test interface of described tester main frame comprises the branch road of three parallel connections, is that a resistance connects to send on high/low level, the branch road on signal wire, the branch road and is the received signal line on the branch road; Described terminator cap comprises the circuit that stabilivolt and diode are formed.
Adopt the technical solution of the utility model, this kind line tester cooperates peripherals with the control core, and be equipped with the various interface that is fit to the on-site maintenance demand, make this line tester fast detecting go out existing short circuit and open circuit fault on the cable, that the user uses is comparatively simple, flexibly, singlely can finish detection.In terminal adapter, use the special circuit of forming by stabilivolt and diode, in the tester main body, utilize simultaneously programmed control to switch the voltage that is added in the V1 end, and cooperate suitable resistance, thereby the terminal adapter that has solved some tester can not be applicable to short circuit and the problem of the detection of opening circuit simultaneously.The program of working out at this line tester is perfect the function of this tester (as unit cable detection, linear selection etc.), shortened detection time, utilization simultaneously mode comparatively intuitively shows relevant information and testing result to the user, and this will bring great convenience to the plant maintenance personnel of production scene and help.
Description of drawings
The above and other feature of the utility model, character and advantage will be by becoming more obvious below in conjunction with accompanying drawing to the description of embodiment, and identical in the accompanying drawings Reference numeral is represented identical feature, wherein:
Fig. 1 is the structured flowchart according to the line tester of an embodiment of the present utility model;
Fig. 2 is the schematic diagram that line tester of the present utility model carries out short-circuit test;
Fig. 3 is the schematic diagram that line tester of the present utility model carries out out of circuit test.
Embodiment
Further specify the technical solution of the utility model below in conjunction with drawings and Examples.
Fig. 1 is the structured flowchart according to the line tester of an embodiment of the present utility model, and with reference to figure 1 as seen, wireline inspection instrument 100 of the present utility model comprises:
Tester main frame 102, tester main frame further comprise,
Man-machine interface 122 is carried out with the user alternately.In this embodiment, man-machine interface 122 comprises display screen 123 and function button 125, and display screen 123 can show 2 row English text and numerals simultaneously, with function menu, information and test result.Function button 125 is a membrane buttons, can allow the user select to carry out out of circuit test, short-circuit test on function menu, choose linear, the single electric wire test of the used cable of test by function button 125.
During test, tester main frame, cable under test and terminal adapter constitute test loop; Make stabilivolt and diode current flow or partition by given different voltage in test both opens during with short circuit, the fault whether the test cable under test exists short circuit or open circuit.Meeting further describes the concrete steps of test in conjunction with Fig. 2 and Fig. 3 below.
The basic detection method of detector of the present utility model is as follows:
When carrying out short-circuit test, the instruction of control core switches to low-voltage V2; This moment, the tester main frame sent negative pulse successively at the wireline test interface, because terminal adapter is blocked, if the receiving end of right side tester main frame does not receive undersuing, showing does not have short-circuit conditions to deposit in the cable; As receiving undersuing at certain receiving end, showing has short-circuit conditions to exist in the cable;
When carrying out out of circuit test, the instruction of control core switches to high voltage V1; This moment, the tester main frame sent negative pulse successively at the wireline test interface, made stabilivolt D by diode in terminal adapter
WReverse breakdown, the pipe of stabilivolt are pressed and are stabilized in V
DWIf the pulse height that the receiving end of tester main frame is received is V1-V
DW, think that so cable is intact; If do not receive that at the receiving end of tester main frame amplitude is V1-V
DWPulse, then show to exist in the pairing cable of wireline test port and open circuit.
For this reason, the tester main frame of wireline inspection instrument of the present utility model and the circuit arrangement of terminal adapter are as follows: the wireline test interface in the tester main frame comprises the branch road of three parallel connections, is that a resistance connects to send on high/low level, the branch road on signal wire, the branch road and is the received signal line on the branch road; Terminator cap comprises the circuit that stabilivolt and diode are formed.Specifically can be referring to figs. 2 and 3 the circuit diagram shown in the kind.
Referring to figs. 2 and 3, Fig. 2 is the schematic diagram that line tester of the present utility model carries out short-circuit test; Fig. 3 is the schematic diagram that line tester of the present utility model carries out out of circuit test.
When carrying out short-circuit test, switch to low-voltage V2 (V2＜VDw) according to the instruction of control core (single-chip microcomputer).At this moment tester is at each port (A0, A1 ... An) send negative pulse successively,, be not enough to puncture stabilivolt Dw, at this moment diode D0, the D1 in the terminal adapter because the amplitude of negative pulse is less ... Dn blocks.Between each heart yearn of tested cable that tester connected like this is disconnected mutually, and at this moment as receiving undersuing at certain receiving end, then showing has short-circuit conditions to exist in the cable.To detect the 1st heart yearn is example, send a negative pulse at the A0 end, because terminal adapter is blocked, if tested cable does not have short circuit then at receiving end (B1, the B2 of other heart yearn ... Bn) can not receive undersuing, otherwise if received undersuing (for example B1 end) at the receiving end of certain root heart yearn, then representing has short-circuit conditions between the 1st heart yearn and the 2nd heart yearn.Line tester just can easily be realized short-circuit detecting like this.
When carrying out out of circuit test, control core (single-chip microcomputer) automatically switches to high voltage V1 (V1＞VDW+V2), at this moment successively at each transmit port (A0, the A1 of tester ... An) send negative pulse, in terminal adapter, make stabilivolt DW reverse breakdown by diode, the pipe of stabilivolt is pressed and is stabilized in VDW, if cable is intact then at receiving end (B0, the B1 of each heart yearn like this ... Bn) pulse height of receiving is V1-VDW (equivalent circuit theory figure is as follows).To detect the 1st heart yearn is example, sends negative pulse at the A0 end, by diode current flow and stabilivolt reverse breakdown, like this as if receiving end (B1, B2 at other heart yearns ... Bn) receive that amplitude is the pulse of V1-VDW, represent that then the 1st heart yearn is intact.Otherwise as if the pulse of not receiving this amplitude at the receiving end of other heart yearns, then showing has open circuit conditions in the cable.
Adopt the technical solution of the utility model, this kind line tester cooperates peripherals with the control core, and be equipped with the various interface that is fit to the on-site maintenance demand, make this line tester fast detecting go out existing short circuit and open circuit fault on the cable, that the user uses is comparatively simple, flexibly, singlely can finish detection.In terminal adapter, use the special circuit of forming by stabilivolt and diode, in the tester main body, utilize simultaneously programmed control to switch the voltage that is added in the V1 end, and cooperate suitable resistance, thereby the terminal adapter that has solved some tester can not be applicable to short circuit and the problem of the detection of opening circuit simultaneously.The program of working out at this line tester is perfect the function of this tester (as unit cable detection, linear selection etc.), shortened detection time, utilization simultaneously mode comparatively intuitively shows relevant information and testing result to the user, and this will bring great convenience to the plant maintenance personnel of production scene and help.
The foregoing description provides to being familiar with the person in the art and realizes or use of the present utility model; those skilled in the art can be under the situation that does not break away from invention thought of the present utility model; the foregoing description is made various modifications or variation; thereby protection domain of the present utility model do not limit by the foregoing description, and should be the maximum magnitude that meets the inventive features that claims mention.
Claims (12)
1. a wireline inspection instrument is characterized in that, comprising:
Tester main frame, described tester main frame comprise,
The control core is used for the processing of signal and instruction;
Man-machine interface is carried out alternately with the user;
The wireline test interface connects cable under test, promptly can be used as transmitting terminal and sends pulse signal, also can be used as receiving end from the cable received signal, and links to each other with described control core by special-purpose I/O interface chip;
Power supply is for the wireline inspection instrument provides power supply;
Terminal adapter is passive component, comprises stabilivolt and several diodes, also comprise one group with the tester main frame on the corresponding test interface of wireline test interface;
During test, described tester main frame, cable under test and terminal adapter constitute test loop; Make stabilivolt and diode current flow or partition by given different voltage in test both opens during with short circuit, the fault whether the test cable under test exists short circuit or open circuit.
2. wireline inspection instrument as claimed in claim 1 is characterized in that, described control core is single chip computer AT 89C51; Described man-machine interface comprises display screen and function button; Described wireline test interface can connect different special I/O interface chip, can send signal, but received signal again; Described power supply is a rechargeable battery, and comprises the stabilized voltage supply interface.
3. wireline inspection instrument as claimed in claim 2 is characterized in that, when carrying out short-circuit test, the instruction of control core switches to low-voltage V2; This moment, described tester main frame sent negative pulse successively at each transmitting terminal of wireline test interface, because terminal adapter is blocked, if the receiving end of tester main frame does not receive negative pulse, showing does not have short-circuit conditions to deposit in the cable; As receiving undersuing at certain receiving end, showing has short-circuit conditions to exist in the cable.
4. wireline inspection instrument as claimed in claim 2 is characterized in that, when carrying out out of circuit test, the instruction of control core switches to high voltage V1; This moment, described tester main frame sent negative pulse successively at each transmitting terminal of wireline test interface, made stabilivolt D by diode in terminal adapter
WReverse breakdown, the pipe of stabilivolt are pressed and are stabilized in V
DWIf the pulse height that the receiving port of tester main frame is received is V1-V
DW, think that so cable is intact; If do not receive that at the receiving end of tester main frame amplitude is V1-V
DWPulse, then show to exist in the pairing cable of wireline test port and open circuit.
5. wireline inspection instrument as claimed in claim 1 is characterized in that, described display screen can show 2 row English text and numerals simultaneously, with function menu, information and test result.
6. wireline inspection instrument as claimed in claim 5 is characterized in that, described function menu can allow the user select to carry out out of circuit test, short-circuit test, choose linear, the single electric wire test of the used cable of test.
7. wireline inspection instrument as claimed in claim 1 is characterized in that, described wireline test interface comprises general-purpose interface and special purpose interface.
8. wireline inspection instrument as claimed in claim 7, it is characterized in that, described general-purpose interface can connect the cable of all size by the translation interface of band crocodile chuck in the annex, and described special purpose interface comprises INTERBUS bus interface, 4 core sensor interfaces and netting twine interface.
9. wireline inspection instrument as claimed in claim 1 is characterized in that, can charge by the power supply of stabilized voltage supply interface or to battery.
10. wireline inspection instrument as claimed in claim 1 is characterized in that, but wireline test interface received signal on the described tester main frame or transmission signal.
11. wireline inspection instrument as claimed in claim 1 is characterized in that described line tester also comprises annex, described annex comprises the translation interface of band crocodile chuck, can connect 17 core cables at most.
12. wireline inspection instrument as claimed in claim 1 is characterized in that,
The wireline test interface of described tester main frame comprises the branch road of three parallel connections, is a resistance on the branch road, connects high/low level, sends on the branch road to be the received signal line on signal wire, the branch road;
Described terminator cap comprises the circuit that stabilivolt and diode are formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200448438U CN2864704Y (en) | 2005-09-07 | 2005-09-07 | Circuit detecting instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200448438U CN2864704Y (en) | 2005-09-07 | 2005-09-07 | Circuit detecting instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2864704Y true CN2864704Y (en) | 2007-01-31 |
Family
ID=37677155
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2005200448438U Expired - Lifetime CN2864704Y (en) | 2005-09-07 | 2005-09-07 | Circuit detecting instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2864704Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102680847A (en) * | 2012-05-25 | 2012-09-19 | 哈尔滨工业大学 | Fast multiple-cable number-distinguishing device |
| CN102818966A (en) * | 2011-12-19 | 2012-12-12 | 中国航空工业集团公司洛阳电光设备研究所 | Testing cable misinsertion prevention method and system for virtual instrument |
| CN101963641B (en) * | 2009-07-24 | 2013-04-10 | 上海长顺电梯电缆有限公司 | Conductor bundle detection system |
| CN103217616A (en) * | 2013-03-29 | 2013-07-24 | 江苏省电力公司张家港市供电公司 | Intelligent wiring instrument |
| CN103454546A (en) * | 2013-08-23 | 2013-12-18 | 重庆市宇邦线缆有限公司 | Method and device for detecting cable core breakage and short circuit faults automatically |
| CN106370984A (en) * | 2016-11-09 | 2017-02-01 | 中车长春轨道客车股份有限公司 | Electric line conduction automatic checkout system and method |
| CN109888665A (en) * | 2019-03-16 | 2019-06-14 | 国网山东省电力公司青州市供电公司 | The inspection of line marks auxiliary device |
-
2005
- 2005-09-07 CN CNU2005200448438U patent/CN2864704Y/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101963641B (en) * | 2009-07-24 | 2013-04-10 | 上海长顺电梯电缆有限公司 | Conductor bundle detection system |
| CN102818966A (en) * | 2011-12-19 | 2012-12-12 | 中国航空工业集团公司洛阳电光设备研究所 | Testing cable misinsertion prevention method and system for virtual instrument |
| CN102818966B (en) * | 2011-12-19 | 2015-06-03 | 中国人民解放军驻六一三所军事代表室 | Testing cable misinsertion prevention method and system for virtual instrument |
| CN102680847A (en) * | 2012-05-25 | 2012-09-19 | 哈尔滨工业大学 | Fast multiple-cable number-distinguishing device |
| CN103217616A (en) * | 2013-03-29 | 2013-07-24 | 江苏省电力公司张家港市供电公司 | Intelligent wiring instrument |
| CN103217616B (en) * | 2013-03-29 | 2015-07-01 | 江苏省电力公司张家港市供电公司 | Intelligent wiring instrument |
| CN103454546A (en) * | 2013-08-23 | 2013-12-18 | 重庆市宇邦线缆有限公司 | Method and device for detecting cable core breakage and short circuit faults automatically |
| CN103454546B (en) * | 2013-08-23 | 2016-05-25 | 重庆市宇邦线缆有限公司 | A kind of cable core break short trouble automatic testing method and device |
| CN106370984A (en) * | 2016-11-09 | 2017-02-01 | 中车长春轨道客车股份有限公司 | Electric line conduction automatic checkout system and method |
| CN106370984B (en) * | 2016-11-09 | 2018-12-14 | 中车长春轨道客车股份有限公司 | Detection method based on electric wiring conducting automatic checkout system |
| CN109888665A (en) * | 2019-03-16 | 2019-06-14 | 国网山东省电力公司青州市供电公司 | The inspection of line marks auxiliary device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20150907 Granted publication date: 20070131 |
|
| EXPY | Termination of patent right or utility model |