CN102012465B - Wire order test method - Google Patents
Wire order test method Download PDFInfo
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- CN102012465B CN102012465B CN 201010002667 CN201010002667A CN102012465B CN 102012465 B CN102012465 B CN 102012465B CN 201010002667 CN201010002667 CN 201010002667 CN 201010002667 A CN201010002667 A CN 201010002667A CN 102012465 B CN102012465 B CN 102012465B
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Abstract
The invention discloses a wire order test method for testing cable wire order. The method is as follows: a first N-path analog quantity switch selector is placed at the side of a cable to be tested, and a far-end loopback line is arranged; the far-end loopback line is respectively connected with resistors R1-RN in series, and the requirement of selecting far-end loopback resistors is that the sum of any two resistors is not equal; local 5 V high level is output through the line and then delivered to a far-end loopback passive joint; the 5 V high level is looped back to the local through the tandem resistors in the line and then through the tandem resistors on the other line; and because the sum of any two far-end resistors is not equal, the partial pressure value on any loopback line is not equal, thus the connection manner of the wire order can be judged. In the invention, a single port device is used to achieve measurement and the cost of the test device can be saved. By using the method, the measurement of any wire order can be realized. The method can be used in more occasions owing to the any wire order judgment function.
Description
Technical field
The present invention relates to communications cable test, relate in particular to a kind of line preface method of testing
Background technology
When Ethernet netting twine line preface was tested, test instrumentation before mostly can only be tested and intersect or direct-connected line, does when netting twine line preface and staggers the time, and only can point out non-intersection or direct-connected line, and concrete incorrect link line preface can not be provided.Even can test out the instrument of free-throw line preface also is to need to use two instrument that two ethernet side chomas of a survey or an instrument are surveyed and can be realized.
Summary of the invention
The object of the present invention is to provide a kind of Ethernet of single port that adopts to cooperate the passive loops tieback head of far-end to realize the method for testing of any netting twine line preface.
For realizing above-mentioned purpose, the technical scheme that the present invention adopts is following:
A kind of line preface method of testing is used for the test to the cable preface, comprising:
Step 1; In tested cable one side one remote loopback circuit is set, and, is respectively R1～RN at the last different resistance of series impedance respectively of remote loopback circuit 1～N; R1～RN value will be followed any two unequal principles of resistance value sum; Be sidelong at tested cable one and put a N road analog quantity and switch selector switch, and use the selection to circuit of CPU control analog quantity switch, said N road analog quantity to switch resistance R of output line road series connection of selector switch; The other end ground connection of resistance R, the resistance of described R1～RN are switched the resistance of the conducting resistance of selector switch much larger than a N road analog quantity;
Step 2 is switched selector switch through a N road analog quantity circuit 1 is connect the 5V high level;
Optimize, also be provided with the 2nd N road analog quantity in tested cable one side and switch selector switch, the arbitrary circuit that is used to tested cable provides high level.
Optimize, before step 1, also comprise and judge that cable opens circuit and the step of short circuit, specifically comprise: in the utilization of making a start cable circuit 1 is connect high level,, then successively 2～N circuit is connect high level, detect other simultaneously if All other routes voltage all is 0
(N-1) level on route road if all be 0, is then judged the open circuit conditions of cable, if cable has at least two circuits not open circuit then carry out step 1;
When detecting the non-line voltage distribution that connects high level, equate then to judge its short circuit as the magnitude of voltage of two circuits, if cable does not have and opens circuit with the situation of short circuit then carry out step 1.
Optimize, adopt the AD detection chip to detect the R voltage in the said step 4, said AD detection chip can reach 2 at least
16
Beneficial effect of the present invention:
1, uses single port equipment can realize measuring, need not to buy dual-port equipment or two equipment come the slotted line preface, save the testing apparatus cost.
2, detailed measurement result can realize the measurement of free-throw line preface, comprises the short circuit and the open circuit conditions of any cable.
3, free-throw line preface arbitration functions makes it use more conditions and not only tests the intersection or the direct-connected line of Ethernet.
Description of drawings
Fig. 1 realizes synoptic diagram for embodiment of the invention hardware;
Fig. 2 judges line short and the schematic flow sheet that opens circuit for the embodiment of the invention;
Fig. 3 is an embodiment of the invention principle schematic.
Embodiment
Network cable with the RJ45 interface is that example specifies technical scheme of the present invention,
With referring to accompanying drawing 1, network cable different resistance of series impedance respectively on remote loopback circuit 1～8 is respectively R1～R8.The resistance of resistance will be far longer than the conducting resistance of 8 tunnel analog quantity change-over switches, and R1～R8 value will be followed any two unequal principles of resistance value sum, and any two resistance sums have than big difference.Can any circuit be connect the power supply of 5V at test lead through 8 tunnels analogy change-over switches, other 7 circuits are delivered to the analog quantity change-over switch respectively.
The signal series connection resistance R 9 of commenting on the output of sampling through 8 tunnel analog quantity change-over switches arrives ground, detects the line preface of cable through the magnitude of voltage at AD conversion chip detection resistance R 9 two ends.
After all passing through a resistance, 8 all signal line (are respectively R1～R8) connect together.
1, referring to accompanying drawing 2, utilize the two 8 tunnel analog quantitys to switch selector switch at test lead and make any route road can both connect high level, mainly be to consider cable short circuit and situation about opening circuit.At first circuit 1 is connect high level making a start,, then successively 2～8 circuits are connect high level, detect the level on other 7 route roads simultaneously,, then judge the open circuit conditions of cable if all be 0 if All other routes voltage all is 0.If having at least two circuits not open circuit, cable just can proceed the judgement of line preface.When detecting the non-line voltage distribution that connects high level, equate then should judge its short circuit as the magnitude of voltage of two circuits.If cable does not have and opens circuit with the situation of short circuit then carry out normal line preface and judge.
2,, carry out normal line cable preface test process and (do not consider cable short circuit and open circuit conditions, measuring junction circuit 1 is met 5V) as follows referring to accompanying drawing 3:
< 1>through first analog switch circuit 1 is connect the 5V high level.
< 2>at first the switching of first analog quantity is strobed into cable circuit 2, utilizes the AD detection chip to detect the voltage at R9 two ends.Because resistance in series is much larger than the conducting resistance of change-over switch; So this moment, the magnitude of voltage at R9 two ends was: V=(R9/ (R3+R8+R9)) * 5V, magnitude of voltage can confirm that 1,2 line of local terminal docks 3 of opposite end thus; 8 lines are right, but concrete local terminal 1 signal wire connect 3 of opposite end still be 8 still judgement do not come out.
< 3>again the switching of first analog quantity is strobed into cable circuit 3, detects the voltage at R9 two ends with the AD detection chip.This moment, the magnitude of voltage at R9 two ends was: V=(R9/ (R2+R3+R9)) * 5V; Magnitude of voltage can be confirmed 1 of local terminal thus; 2,3 lines of 3 lines butt joints opposite end are right, this just can judge this end line 1 connect the opposite end circuit 3; And this end line 3 connects end line 2, and deducibility simultaneously goes out the circuit 8 that this end line 2 after the voltage measurement first time connects the opposite end.
< 4>this end line 1 with end line concrete is connected clear and definite back just successively change detection remain the voltage of circuit, confirm the line preface of every circuit.
Attention: can know from above-mentioned test process; To follow a principle at the resistance value of R1～R8: by the line voltage signal formula V=R9/ (Rx+Ry+R9) that judges after second analog quantity is switched; Wherein Rx+Ry is any two resistance value sums among far-end R1～R8; Be any two resistances with can not equate, thereby otherwise identical magnitude of voltage will occur on the different signal lines occurring and cause situation about judging by accident.Voltage checking chip will be used the higher AD detection chip of quantified precision, requires can reach 2 at least
16For guaranteeing the accuracy of test, can the high level of externally exporting also be input to the AD detection chip, as the reference high voltage.
Claims (3)
1. a line preface method of testing is used for the test to the cable preface, it is characterized in that comprising:
Step 1; In tested cable one side one remote loopback circuit is set, and, is respectively R1～RN at the last different resistance of series impedance respectively of remote loopback circuit 1～N; R1～RN value will be followed any two unequal principles of resistance value sum; Be sidelong at tested cable one and put a N road analog quantity and switch selector switch, and the selection to circuit of using CPU control analog quantity to switch selector switch, a said N road analog quantity is switched resistance R of output line road series connection of selector switch; The other end ground connection of resistance R, the resistance of described R1～RN are switched the resistance of the conducting resistance of selector switch much larger than a N road analog quantity;
Step 2 is switched selector switch through a N road analog quantity circuit 1 is connect the 5V high level;
Step 3; The one N road analog quantity is switched the selector switch switching be strobed into circuit 2, detect the voltage at R two ends, the magnitude of voltage at R two ends is: V=(R/ (R1 '+R2 '+R)) * 5V; Magnitude of voltage can draw (R1 '+R2 ') voltage and can confirm the value of (R1 '+R2 ') according to formula R=U/I thus; Judge the corresponding circuit of R1 ' and R2 ' thus, but can not distinguish R1 ' and respectively corresponding any the bar circuit of R2 ', said (R1 '+R2 ') be two resistance value sums among the resistance R 1-RN;
Step 4; The one N road analog quantity is switched selector switch be strobed into circuit 3, detect the voltage at R two ends, this moment, the magnitude of voltage at R two ends was: V=(R/ (R1 '+R3 '+R)) * 5V; Magnitude of voltage can be confirmed the voltage of (R1 '+R3 ') and can confirm the value of (R1 '+R3 ') according to formula R=U/I thus; Judge the corresponding circuit of R1 ' and R3 ' thus, can judge the corresponding circuit of R1 ' according to step 3 more in view of the above, said (R1 '+R3 ') be two resistance value sums among the resistance R 1-RN;
Step 5, this end line 1 with end line concrete is connected clear and definite back just successively change detection remain the voltage of circuit, confirm the line preface of every circuit.
2. line preface method of testing according to claim 1 is characterized in that: also be provided with the 2nd N road analog quantity in tested cable one side and switch selector switch, the arbitrary circuit that is used to tested cable provides high level.
3. line preface method of testing according to claim 2 is characterized in that: before step 1, also comprise and judge that tested cable opens circuit and the step of short circuit, specifically comprise: at local terminal circuit 1 is connect high level; If All other routes voltage all is 0; Then successively 2～N circuit is connect high level, detect the level on other (N-1) route road simultaneously, if all be 0; Then judge the open circuit conditions of tested cable, if tested cable has at least two circuits not open circuit then carry out step 1;
When detecting the non-line voltage distribution that connects high level, equate then to judge its short circuit as the magnitude of voltage of two circuits, if tested cable does not have and opens circuit with the situation of short circuit then carry out step 1.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010002667 CN102012465B (en) | 2010-01-21 | 2010-01-21 | Wire order test method |
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| CN 201010002667 CN102012465B (en) | 2010-01-21 | 2010-01-21 | Wire order test method |
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| CN102012465A CN102012465A (en) | 2011-04-13 |
| CN102012465B true CN102012465B (en) | 2012-12-05 |
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| CN 201010002667 Active CN102012465B (en) | 2010-01-21 | 2010-01-21 | Wire order test method |
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| CN102185739B (en) * | 2011-05-14 | 2013-08-21 | 华北水利水电学院 | Device for testing Ethernet network cable connection diagram |
| CN102495298B (en) * | 2011-12-09 | 2013-09-25 | 辽宁省电力有限公司沈阳供电公司 | Method for realizing line phase check by using programmable logic controller (PLC) |
| CN102495297B (en) * | 2011-12-09 | 2014-10-22 | 辽宁省电力有限公司沈阳供电公司 | Method for realizing phase check function by relay contact |
| CN102636723A (en) * | 2012-05-04 | 2012-08-15 | 新疆维吾尔自治区送变电工程公司 | Secondary cable checking method for transformer substation |
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| CN105676051A (en) * | 2016-01-21 | 2016-06-15 | 北京荣达千里科技有限公司 | Integrated line sequence testing device and method |
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| CN107357196B (en) * | 2017-06-15 | 2023-11-14 | 珠海格力电器股份有限公司 | Wire identification method and device |
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| CN108646126B (en) * | 2018-04-16 | 2024-01-12 | 常州科研试制中心有限公司 | Line sequence detection device |
| CN109254224A (en) * | 2018-11-13 | 2019-01-22 | 永州市诺方舟电子科技有限公司 | A kind of open circuit of the communications cable, misconnection line sequence measurement method and system |
| CN109738787A (en) * | 2018-12-28 | 2019-05-10 | 上海新纪元机器人有限公司 | A kind of cable recognition methods and system |
| CN113075589A (en) * | 2021-03-25 | 2021-07-06 | 广东工业大学 | Integrated line sequence testing device and method |
| CN113406535B (en) * | 2021-06-17 | 2023-10-24 | 合肥京东方视讯科技有限公司 | Test board and test method for detecting electronic wires between boards |
| CN113900043B (en) * | 2021-10-09 | 2024-05-28 | 北京卫星环境工程研究所 | Measurement system conduction and loop corresponding relation test equipment for spacecraft thermal test |
| CN114441992B (en) * | 2021-12-29 | 2024-01-26 | 苏州浪潮智能科技有限公司 | Test fixture, test device and test method for cable sequence of transmission line |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2216253Y (en) * | 1994-10-19 | 1995-12-27 | 易江涛 | Multi-wire cable sequence and fault detector |
| DE19622532A1 (en) * | 1996-06-05 | 1997-12-11 | Deutsche Telekom Ag | Testing method for checking and determining position of splices in telecommunications cable |
| EP1089081A2 (en) * | 1999-09-23 | 2001-04-04 | ABB Substation Automation Oy | Method for computational determination of ground fault distance in an electrical power distribution network having a ring configuration |
| CN201242827Y (en) * | 2008-05-30 | 2009-05-20 | 王公儒 | Experimental instrument for simulating network wiring fault |
| CN101458290A (en) * | 2008-12-31 | 2009-06-17 | 江苏省电力公司苏州供电公司 | Multi-core cable sequence measuring method based on frequency modulation digital code and apparatus thereof |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4445086A (en) * | 1982-02-22 | 1984-04-24 | The Boeing Company | Multiconductor cable tester |
| CN2031930U (en) * | 1988-03-05 | 1989-02-01 | 贺玉清 | Digital type conductor-pairing device for electric cable |
| CN2054538U (en) * | 1989-06-10 | 1990-03-14 | 吉林热电厂 | Fast-speed wire-checking unit |
| US5436555A (en) * | 1994-06-09 | 1995-07-25 | Fluke Corporation | LAN cable identifier for testing local area network cables |
| CN2421658Y (en) * | 1999-05-22 | 2001-02-28 | 王建雷 | Cable correcting apparatus |
| CN2872373Y (en) * | 2005-03-20 | 2007-02-21 | 柳开义 | Fast digital wire-core inspector |
-
2010
- 2010-01-21 CN CN 201010002667 patent/CN102012465B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2216253Y (en) * | 1994-10-19 | 1995-12-27 | 易江涛 | Multi-wire cable sequence and fault detector |
| DE19622532A1 (en) * | 1996-06-05 | 1997-12-11 | Deutsche Telekom Ag | Testing method for checking and determining position of splices in telecommunications cable |
| EP1089081A2 (en) * | 1999-09-23 | 2001-04-04 | ABB Substation Automation Oy | Method for computational determination of ground fault distance in an electrical power distribution network having a ring configuration |
| CN201242827Y (en) * | 2008-05-30 | 2009-05-20 | 王公儒 | Experimental instrument for simulating network wiring fault |
| CN101458290A (en) * | 2008-12-31 | 2009-06-17 | 江苏省电力公司苏州供电公司 | Multi-core cable sequence measuring method based on frequency modulation digital code and apparatus thereof |
Non-Patent Citations (1)
| Title |
|---|
| JP昭61-96476A 1986.05.15 |
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Address after: 545006 the Guangxi Zhuang Autonomous Region Avenue in the City District of Liuzhou city in Guangxi, No. 17, science and Technology Park Patentee after: Liuzhou Dadi telecommunication technology Limited by Share Ltd Address before: 100083 Beijing city Haidian District Wudaokou Dongsheng Park Huaqingjiayuan No. 7 Building 1601 room Patentee before: Liuzhou Dadi Telecommunication Equipment Co., Ltd. |