CN103760457A - Cable checking circuit structure and common-line-free cable checking method - Google Patents

Cable checking circuit structure and common-line-free cable checking method Download PDF

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CN103760457A
CN103760457A CN201410038469.4A CN201410038469A CN103760457A CN 103760457 A CN103760457 A CN 103760457A CN 201410038469 A CN201410038469 A CN 201410038469A CN 103760457 A CN103760457 A CN 103760457A
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signal
checking
cable
port
checking signal
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CN103760457B (en
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徐键
李大建
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South Engineering Co Ltd of China Railway Construction Electrification Bureau Group Co Ltd
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South Engineering Co Ltd of China Railway Construction Electrification Bureau Group Co Ltd
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Abstract

The invention discloses a cable checking circuit structure and a common-line-free cable checking method. Only tested cables without any common reference end are needed for a circuit crossing a checking signal sending end and a checking signal receiving end, each tested cable checking circuit comprises a current-limiting resistor, a tested cable, an isolation diode and a signal coupler of the checking signal receiving end, and the tested cable, the isolation diode and the checking signal receiving end are sequentially connected from a checking signal sending end equipment port. Cathodes of the isolation diodes are connected with anodes of input ends of the signal couplers, cathodes of input ends of the signal couplers are connected with anodes of the isolation diodes, and the cathode ends of the isolation diodes of the tested cable checking circuits or anode ends of input ends of the signal couplers of the tested cable checking circuits are connected through wires. Unique signals attached to the cables are sent to the corresponding cables respectively and sequentially by the sending end, and serial numbers of the cables are displayed after the signals are received by the receiving end. By means of the method, long-distance cable checking can be quickly and accurately carried out by one person without common lines.

Description

A kind of cable checking circuit structure and without the cable method of calibration of concentric line
Technical field
The present invention relates to the polycore cable long distance line technology of leaving school, is a kind of cable checking circuit structure and the cable method of calibration without concentric line specifically.
Background technology
In power and lighting or intelligent system wiring installation, can use in a large number polycore cable as the signal transmission medium between various field controlling instrument, equipment and Central Control Room control system, when construction wiring, need to insulate to cable, conduction property test, especially need to confirm whether two ends correspondence of the corresponding cable marker of each root heart yearn, to guarantee the cable exact connect ion of the various signals of instrument, power supply, be called school line procedures.
Traditional school line method be need two that be skilled in technique and to drawing clearly, the technician of good teamwork, use intercom and multimeter, at cable two ends, utilize the concentric lines such as shielding line, by the heart yearn of short-circuiting cable one end one by one, at the other end, find corresponding heart yearn and measure the method for break-make with multimeter, by intercom communication, link up, take multiple measurements that short circuit, opening operation are confirmed and mark wire size.
But find in real work, because personnel's skills involved in the labour are different, in noisy environment, use intercom to carry out in voice communication process, make the mistake unavoidably or error, in the debugging that powers on subsequently, find instrument cisco unity malfunction, even because false wiring causes the instrument situation of burning, happen occasionally, search wiring error and correct and can waste again a large amount of man-hours, and then affecting carrying out smoothly of whole project progress.
Summary of the invention
Technical matters to be solved by this invention is to address the above problem, improve the caused various disadvantages of traditional school line method, a kind of cable checking circuit structure and the cable method of calibration without concentric line are provided, realization is without concentric line, only one man operation, obtain rapidly and accurately school toe-in fruit, improve school line work efficiency and accuracy, reduce the requirement to on-the-spot test personnel.
Described cable checking circuit structure, comprises the checking signal sending ending equipment circuit and the checking signal receiving device circuit that by tested cable, connect, and described tested cable at least includes the 2 tested cables in road, it is characterized in that:
The circuit of crossing over checking signal transmitting terminal and checking signal receiving end only needs the tested cable itself without common reference end, and the tested cable checking circuit in each road comprises the signal coupler of current-limiting resistance and the tested cable, isolating diode and the checking signal receiving end that start to be connected successively from checking signal sending ending equipment interface; The anodic bonding of the negative electrode of described isolating diode and signal coupler input end, the negative electrode of signal coupler input end and the anodic bonding of described isolating diode, it is consistent that described current-limiting resistance is serially connected in the current-limiting resistance link position on arbitrary position in above-mentioned circuit front end or circuit and each road, and the described isolating diode cathode terminal of each tested cable line in road or the anode tap of signal coupler input end are connected by a wire.
Further, the output terminal of described signal coupler is connected to and receives signal and process or indicating device, exports the checking signal that the checking signal transmitting terminal of this signal coupler place circuit is exported.
A kind of embodiment is that described signal coupler is that input end is the optocoupler of light emitting diode.
A kind of embodiment is that each described tested cable is connected to checking signal generator module at described checking signal transmitting terminal through overdrive circuit.
The cable method of calibration without concentric line of utilizing above-mentioned cable checking circuit structure to realize, is characterized in that:
Described checking signal sending ending equipment and the described checking signal receiving device of use with described cable checking circuit structure, in one end of tested cable, at least 2 velamens survey cables of tested cable are connected to arbitrarily respectively to the output port of described checking signal sending ending equipment, at the other end by the input port that is connected to arbitrarily respectively described checking signal receiving device by survey line to be numbered this tested cable, the tested cable that each velamen is connected all takies alone a connectivity port, and without concentric line and concentric line port are set;
Described checking signal transmitting terminal is set different numberings by each transmit port, to each transmit port, send successively corresponding checking signal, all the other ports are made as high level, and described checking signal sequential is followed successively by: the initial synchronizing signal of low level, synchronous end signal, port coded signal, high level waiting signal;
Described checking signal receiving end is set different numberings by each receiving port, receives after start signal, and this port receives data-signal, receives and finishes rear storage or show the corresponding coding of the other side's port that receiving port number and this port receive;
On the tested cable of having surveyed, mark detected corresponding identification marking.
A kind of embodiment, wherein initial synchronizing signal accounts for 2~10 clock period, and synchronous end signal accounts for 1 clock period, and port coded signal accounts for 3~8 clock period, 3~8 codings of port coded signal correspondence.
Typically, described port coded signal accounts for 5 clock period, the tested cable of corresponding 5 codings and maximum 32 cores.
As prioritization scheme, in testing process, described checking signal transmitting terminal ceaselessly circulates and sends checking signal to each port, described checking signal receiving end often finishes receiving the checking signal of a port and rewrites the received corresponding coding of the other side's checking signal of corresponding ports one time, with the wiring that responds in time the other side's port, changes.
As prioritization scheme, the numbering that the receiving port of described checking signal receiving end is set is contrary with the number order that the transmit port of described checking signal transmitting terminal is set.
As prioritization scheme, described checking signal receiving end is provided with the button of cleaning and/or a locking encoded digital information that records or show.
The present invention compared with prior art, has the following advantages:
1, school line accuracy 100%;
2, can one man operation, avoided the traditional two people matching problem at the school of cable two ends intercommunication line, saved communication tool;
3, test a control cables (being made as 21 cores), reduce 90% than break-make resistance test service time;
4, do not utilize any bridging line (comprising ground wire), just can to cable, carry out school line easily;
6, do not need the school lineman that professional electrician also can complete paired cable to do.
Accompanying drawing explanation
Fig. 1 is electrical block diagram of the present invention,
Fig. 2 is a kind of checking signal oscillogram,
Fig. 3 is transmitting terminal circuit structure block diagram,
Fig. 4 is receiving terminal circuit structured flowchart.
In figure: 1-checking signal drive end, 2-current-limiting resistance, 3-tested cable, 4-isolating diode, 5-signal coupler input end, 6-signal coupler, 7-tested cable, 8-driving circuit, 9-checking signal generator module.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further described: as shown in fig. 1, described cable checking circuit structure, comprise the checking signal sending ending equipment circuit and the checking signal receiving device circuit that by tested cable 3, connect, described tested cable 3 at least includes the 2 tested cables 7 in road.
Take signal coupler, be that optocoupler is as embodiment, the circuit of leap checking signal transmitting terminal and checking signal receiving end only needs without the tested cable 7 of common reference end own, and the tested cable checking circuit in each road comprises the signal coupler 6 of current-limiting resistance 2 and the tested cable 7, isolating diode 4 and the checking signal receiving end that start to be connected successively from checking signal sending ending equipment interface; The negative electrode of described isolating diode 4 and signal coupler input end 5 are the anodic bonding of optocoupler luminotron, the negative electrode of signal coupler input end 5 is the negative electrode of optocoupler luminotron and the anodic bonding of described isolating diode 4, it is consistent that described current-limiting resistance 2 is serially connected in the current-limiting resistance link position on arbitrary position in above-mentioned circuit front end or circuit and each road, before the current-limiting resistance 2 in Fig. 1 is located at the tested cable of checking signal transmitting terminal.Described isolating diode 4 cathode terminals of each tested cable line in road or the anode tap of optocoupler luminotron are connected by a wire.
The output terminal of described signal coupler 6 is connected to and receives signal and process or indicating device, exports the checking signal that the checking signal transmitting terminal of this optocoupler place circuit is exported.Each described tested cable 7 is connected to checking signal generator module 9 at described checking signal transmitting terminal through overdrive circuit 8.
Transmitting terminal links together all DOL Data Output Line as the LED anode of all optocouplers by isolating diode, and this isolating diode has played the selection effect to the different paths of low and high level electric current simultaneously.For example, when transmitting terminal sends high level, in the present embodiment, through current-limiting resistance, be first then that diode arrives all optocoupler LED anodes, if a certain road transmitting terminal output low level, electric current can flow out and flow into by the wire being all connected with described isolating diode 4 cathode terminals from isolating diode negative electrode so, pours into low level drive end after the LED of optocoupler.By such compound use, offset a public ground wire in road, any like this route can be concentric line.During use, remain and only have a road for comprising low level signal output, because the output encoder on each road arranges different, the each road of sending ending equipment circulation output coding, receiving end is circulated one by one and receive the check code on each road, thereby can identify the transmitting terminal numbering that every single line is corresponding.
A kind of cable method of calibration without concentric line of utilizing above-mentioned cable checking circuit structure to realize is: use described checking signal sending ending equipment and described checking signal receiving device with described cable checking circuit structure, in one end of tested cable, at least 2 velamens survey cables of tested cable are connected to arbitrarily respectively to the output port of described checking signal sending ending equipment, at the other end by the input port that is connected to arbitrarily respectively described checking signal receiving device by survey line to be numbered this tested cable, the tested cable that each velamen is connected all takies alone a connectivity port, and without concentric line and concentric line port are set.
Described checking signal transmitting terminal is set different numberings by each transmit port, to each transmit port, send successively corresponding checking signal, all the other ports are made as high level, and described checking signal sequential is followed successively by: the initial synchronizing signal of low level, synchronous end signal, port coded signal, high level waiting signal; A kind of embodiment, wherein initial synchronizing signal accounts for 2~10 clock period, and synchronous end signal accounts for 1 clock period, and port coded signal accounts for 3~8 clock period, 3~8 codings of port coded signal correspondence.Typically, described port coded signal accounts for 5 clock period, the tested cable of corresponding 5 codings and maximum 32 cores.
Described checking signal receiving end is set different numberings by each receiving port, receives after start signal, and this port receives data-signal, receives and finishes rear storage or show the corresponding coding of the other side's port that receiving port number and this port receive; On the tested cable of having surveyed, mark detected corresponding identification marking.
Further, in order to realize one man operation, transmitting terminal need to be told receiving end the wire size of transmitting terminal stube cable.Therefore transmitting terminal need to and accurately send the wire size coding of transmit leg.If tested cable has 32 lines, transmitting terminal sends 32 data from 32 connection jaws of transmitting terminal successively: for example connection terminal 0 sends data 0, and connection terminal 1 sends data 1, and connection terminal 2 sends data 2, by that analogy until connection terminal 31 sends data 31, then repeat this process successively.But be that so simple transmission data receiver cannot accurately be resolved, must before sending each data, guarantee that data are synchronous, in this example, send a low level synchronous head that is greater than 2 haplotype data transmitting times, as shown in Figure 2, send the synchronous head of data and the roughly waveform of data.Had synchronous head, receiving end just can first detect this synchronous head, just receives data below after detecting.
In testing process, described checking signal transmitting terminal ceaselessly circulates and sends checking signal to each port, described checking signal receiving end often finishes receiving the checking signal of a port and rewrites the received corresponding coding of the other side's checking signal of corresponding ports one time, with the wiring that responds in time the other side's port, changes.
Described checking signal receiving end is provided with the button of cleaning and/or a locking encoded digital information that records or show.
Take the tested cable of 32 cores as example, each connection terminal of tester has marked the wire size of this terminal, and the reception terminal sequence number of seeing transmitting terminal and receiving end cable from front is that anti-(transmitting terminal is sequence number 0-31 successively from left to right; Receiving end is sequence number 31-0 from left to right), this be when facilitating measurement of near distance cable can not intersect disorderly around.Because connection terminal is quick crimp type terminal, can connect the many connecting lines with wire clamp according to tested cable core number, the tested cable of convenient connection.
Referring to Fig. 3,4,32 cable test instrument of the present invention, are comprised of 2 parts, and a part is transmitting terminal, and a part is receiving end.Receiving end and transmitting terminal connection terminal can, according to tested cable core number many connecting lines of crimping on terminal, utilize connecting line wire clamp to be connected successively with transmitting terminal terminal, then by transmitting terminal switch opens.Again other tested wire one end is connected with receiving end terminal successively with connecting line, then opens receiving end switch.At this moment on display, can demonstrate cable that receiving end connects and the corresponding terminal number of transmitting terminal stube cable, finally can by tested wire according to display show wire size thereto or put number marking tube.
Each embodiment of above-mentioned application cross-reference mutually, to obtain needed application result.

Claims (10)

1. a cable checking circuit structure, comprises the checking signal sending ending equipment circuit and the checking signal receiving device circuit that by tested cable (3), connect, and described tested cable (3) at least includes the 2 tested cables in road (7), it is characterized in that:
The circuit of crossing over checking signal transmitting terminal and checking signal receiving end only needs the tested cable (7) itself without common reference end, and the tested cable checking circuit in each road comprises the signal coupler (6) of current-limiting resistance (2) and the tested cable (7) that starts to be connected successively from checking signal sending ending equipment interface, isolating diode (4) and checking signal receiving end; The anodic bonding of the negative electrode of described isolating diode (4) and signal coupler input end (5), the anodic bonding of the negative electrode of signal coupler input end (5) and described isolating diode (4), it is consistent that described current-limiting resistance (2) is serially connected in the current-limiting resistance link position on arbitrary position in above-mentioned circuit front end or circuit and each road, and described isolating diode (4) cathode terminal of each tested cable line in road or the anode tap of signal coupler input end are connected by a wire.
2. cable checking circuit structure according to claim 1, it is characterized in that: the output terminal of described signal coupler (6) is connected to and receives signal and process or indicating device, exports the checking signal that the checking signal transmitting terminal of this signal coupler place circuit is exported.
3. cable checking circuit structure according to claim 1 and 2, is characterized in that: described signal coupler (6) is that input end is the optocoupler of light emitting diode.
4. cable checking circuit structure according to claim 1, is characterized in that: each described tested cable (7) is connected to checking signal generator module (9) at described checking signal transmitting terminal through overdrive circuit (8).
5. the cable method of calibration without concentric line of utilizing claim 1,2, one of 4 described cable checking circuit structures to realize, is characterized in that:
Described checking signal sending ending equipment and the described checking signal receiving device of use with described cable checking circuit structure, in one end of tested cable, at least 2 velamens survey cables of tested cable are connected to arbitrarily respectively to the output port of described checking signal sending ending equipment, at the other end by the input port that is connected to arbitrarily respectively described checking signal receiving device by survey line to be numbered this tested cable, the tested cable that each velamen is connected all takies alone a connectivity port, and without concentric line and concentric line port are set;
Described checking signal transmitting terminal is set different numberings by each transmit port, to each transmit port, send successively corresponding checking signal, all the other ports are made as high level, and described checking signal sequential is followed successively by: the initial synchronizing signal of low level, synchronous end signal, port coded signal, high level waiting signal;
Described checking signal receiving end is set different numberings by each receiving port, receives after start signal, and this port receives data-signal, receives and finishes rear storage or show the corresponding coding of the other side's port that receiving port number and this port receive;
On the tested cable of having surveyed, mark detected corresponding identification marking.
6. the cable method of calibration without concentric line according to claim 5, it is characterized in that: wherein initial synchronizing signal accounts for 2~10 clock period, synchronous end signal accounts for 1 clock period, and port coded signal accounts for 3~8 clock period, 3~8 codings of port coded signal correspondence.
7. the cable method of calibration without concentric line according to claim 6, is characterized in that: described port coded signal accounts for 5 clock period, the tested cable of corresponding 5 codings and maximum 32 cores.
8. the cable method of calibration without concentric line according to claim 5, it is characterized in that: in testing process, described checking signal transmitting terminal ceaselessly circulates and sends checking signal to each port, described checking signal receiving end often finishes receiving the checking signal of a port and rewrites the received corresponding coding of the other side's checking signal of corresponding ports one time, with the wiring that responds in time the other side's port, changes.
9. the cable method of calibration without concentric line according to claim 5, is characterized in that: the numbering that the receiving port of described checking signal receiving end is set is contrary with the number order that the transmit port of described checking signal transmitting terminal is set.
10. the cable method of calibration without concentric line according to claim 5, is characterized in that: described checking signal receiving end is provided with the button of cleaning and/or a locking encoded digital information that records or show.
CN201410038469.4A 2014-01-27 2014-01-27 A kind of cable method of calibration without common wire Active CN103760457B (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105445605A (en) * 2015-11-12 2016-03-30 国家电网公司 Wire tester and wire test method thereof
CN104330990B (en) * 2014-10-16 2017-02-01 航天科工惯性技术有限公司 Parity check cable model identification method and device thereof
CN109061367A (en) * 2018-08-28 2018-12-21 国网新疆电力有限公司伊犁供电公司 Fast pairing device for multicore cable
CN112014771A (en) * 2020-09-04 2020-12-01 国网冀北电力有限公司检修分公司 Cable calibration device and cable calibration control method and system thereof
CN113552508A (en) * 2021-08-23 2021-10-26 沈阳铁路信号有限责任公司 Separable cable multi-core cable checking device and method based on zigbee technology

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2359704Y (en) * 1998-12-10 2000-01-19 边永盛 No-screen double-twisted-line tester
CN2849738Y (en) * 2005-11-07 2006-12-20 上海豪泊威通信技术有限公司 Number quantity detecting circuitboard capable of warning connecting cable damage
CN101408581A (en) * 2007-09-09 2009-04-15 山东信通电器有限公司 Cable wire break detection alarming device
CN203673014U (en) * 2014-01-27 2014-06-25 中铁建电气化局集团南方工程有限公司 Cable check circuit structure

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2359704Y (en) * 1998-12-10 2000-01-19 边永盛 No-screen double-twisted-line tester
CN2849738Y (en) * 2005-11-07 2006-12-20 上海豪泊威通信技术有限公司 Number quantity detecting circuitboard capable of warning connecting cable damage
CN101408581A (en) * 2007-09-09 2009-04-15 山东信通电器有限公司 Cable wire break detection alarming device
CN203673014U (en) * 2014-01-27 2014-06-25 中铁建电气化局集团南方工程有限公司 Cable check circuit structure

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104330990B (en) * 2014-10-16 2017-02-01 航天科工惯性技术有限公司 Parity check cable model identification method and device thereof
CN105445605A (en) * 2015-11-12 2016-03-30 国家电网公司 Wire tester and wire test method thereof
CN109061367A (en) * 2018-08-28 2018-12-21 国网新疆电力有限公司伊犁供电公司 Fast pairing device for multicore cable
CN112014771A (en) * 2020-09-04 2020-12-01 国网冀北电力有限公司检修分公司 Cable calibration device and cable calibration control method and system thereof
CN113552508A (en) * 2021-08-23 2021-10-26 沈阳铁路信号有限责任公司 Separable cable multi-core cable checking device and method based on zigbee technology

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