CN101750564A - Multi-core cable tester - Google Patents
Multi-core cable tester Download PDFInfo
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- CN101750564A CN101750564A CN200810227608A CN200810227608A CN101750564A CN 101750564 A CN101750564 A CN 101750564A CN 200810227608 A CN200810227608 A CN 200810227608A CN 200810227608 A CN200810227608 A CN 200810227608A CN 101750564 A CN101750564 A CN 101750564A
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Abstract
The invention relates to a tester, in particular to a multi-core cable tester. The invention aims to provide a multi-core cable tester which ensures the accuracy of the testing result and outputs the testing result from a liquid crystal screen and a printer. The multi-core cable tester mainly comprises three parts: an input circuit, an output circuit and a control circuit, wherein the input circuit comprises a keyboard circuit, an insulation test circuit, an A/D conversion circuit and an on-off test circuit; the output circuit consists of a CPLD system circuit, an LCD liquid crystal display module, a printer, a relay group and a 500V DC high-voltage circuit; the control circuit consists of a 8051 single-chip microcomputer system circuit; and the output end of the input circuit is connected with the input end of the control circuit, and the input end of the control circuit is connected with the input end of the output circuit.
Description
Technical field:
The present invention relates to detecting instrument, especially relates to a kind of multi-core cable tester.
Background technology:
Miscellaneous communication cable, umbilical cable are used in various instruments and opertaing device in a large number.Whether good whether cable conducting, wire insulation resistance meet the demands, and directly have influence on the normal operation of electric equipment.Withstand voltage insulation resistance is an important indicator weighing the insulating material performance.The method major defect of traditional megger measurement insulation resistance has: measuring error is big, can not guarantee the accuracy of voltage-withstand test with high-voltage power supply; Measurement result can't be preserved and printout automatically; In insulation measurement between the polycore cable heart yearn, loaded down with trivial details, the easy wrong of changing-over line, hand labor amount are big.
Summary of the invention:
The present invention is exactly at the problems referred to above, and a kind of precision of test result that both guaranteed is provided, again can be with the multi-core cable tester of test result from LCDs and printer output.
For achieving the above object, the present invention adopts following technical scheme, and the present invention mainly is made up of following three parts: input circuit: comprise keyboard circuit, Insulation test circuit, A/D change-over circuit and on off test circuit; Output circuit: form by CPLD circuit system, LCD LCD MODULE, printer, relay group and 500V dc high-voltage circuit; Control circuit: constitute by 8051 microcontroller system circuits; The output terminal of described input circuit links to each other with the input end of control circuit, and the input end of control circuit links to each other with the input end of output circuit.
Beneficial effect of the present invention:
Tester of the present invention is with the combination of 51 single-chip microcomputers and CPLD chip, designed a kind ofly have that test speed is fast, control flexibly, can adapt to that different cores count that the on off test and the Insulation test of cable require, intellectuality and automaticity be than higher test macro.
Description of drawings:
Fig. 1 is the block diagram of system of the present invention;
Fig. 2 is an insulation resistance test circuit schematic diagram of the present invention;
Fig. 3 is a cable on-off circuit schematic diagram of the present invention;
Fig. 4 is a software flow pattern of the present invention.
Embodiment:
See Fig. 1, the present invention mainly is made up of following three parts: input circuit 1: comprise keyboard circuit, Insulation test circuit, A/D change-over circuit and on off test circuit; Output circuit 3: form by CPLD circuit system, LCD LCD MODULE, printer, relay group and 500V dc high-voltage circuit; Control circuit 2: constitute by 8051 microcontroller system circuits; The output terminal of described input circuit 1 links to each other with the input end of control circuit 2, and the input end of control circuit 2 links to each other with the input end of output circuit 3.
See Fig. 2, insulation resistance test circuit is made up of sample circuit 4, amplifier 5 and AD7705 (6) three parts; Adopt the output terminal of circuit to be connected with the input end of amplifier, the output terminal of amplifier links to each other with the input end of AD7705,500V DC delivers to amplifier after by R2 and R3 dividing potential drop, through delivering to the AD ref end of AD7705 after the amplifier conditioning again, as the test reference voltage of AD7705, deliver to the AD in end of delivering to AD7705 after amplifier is nursed one's health as the Insulation test sampled voltage through Rx and R1 voltage after partial.
Cable break-make testing circuit is seen Fig. 3, before the beginning break-make detects, should be earlier with short-circuited conducting sleeve all heart yearn short circuits with cable one end, and the other end is received on the relay array.Relay array is used for the heart yearn of cable is inserted switching, and the normally closed contact of all heart yearns by corresponding relay is through resistance R 1 and R2 ground connection.When detecting the 1# heart yearn, closed S1 relay makes the normally opened contact closure of relay S1, and+15V is added on resistance R 1 and the R2 by heart yearn, through delivering to single-chip microcomputer after R1 and the R2 dividing potential drop.If the heart yearn of surveying opens circuit, then Vo is OV, otherwise Vo is+5V.
Other circuit
Except that foregoing circuit, system also has circuit such as power supply, keyboard and system reset.
Power circuit provides power supply also will for single-chip microcomputer, LCD LCD MODULE, relay group, testing circuit etc. except providing the power supply to dc high-voltage circuit.
The operating voltage of keyboard circuit is+5V, has 7 buttons, can finish the parameter setting of system by these 7 buttons, as the core number of cable to be tested, the transfinite setting of value of insulation resistance, and test result function such as check.
The design of software
Software section of the present invention adopts assembly language to write, and the executable code that assembly language generates is quick, compact, is better than the code that C programmer obtains on operational efficiency.The main program flow of this system as shown in Figure 4, system software mainly comprises the System self-test program, the cable data setting program, check test result program last time, cable on off test program, on off test is display routine as a result, cable insulation test procedure, Insulation test be display routine etc. as a result.
Carry out initialization when self-check program powers in system, instrument is carried out self check, to guarantee the correctness of Instrument working state.
The parameter setting program is used for setting the insulating resistance of cable value that transfinites, and scope is 1～20M, and the total core number of cable and cable each minute core branch number, and its scope is 2～48 cores.
Check that the test result program is used for consulting cable break-make and insulation resistance value test result last time.On off test and Insulation test program are used for respectively cable is carried out on off test and Insulation test, the result of test respectively by on off test as a result display routine and Insulation test as a result display routine show.
Claims (1)
1. a multi-core cable tester mainly is made up of following three parts: input circuit: comprise keyboard circuit, Insulation test circuit, A/D change-over circuit and on off test circuit; Output circuit: form by CPLD circuit system, LCD LCD MODULE, printer, relay group and 500V dc high-voltage circuit; Control circuit: constitute by 8051 microcontroller system circuits; The output terminal that it is characterized in that described input circuit links to each other with the input end of control circuit, and the input end of control circuit links to each other with the input end of output circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810227608A CN101750564A (en) | 2008-11-27 | 2008-11-27 | Multi-core cable tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810227608A CN101750564A (en) | 2008-11-27 | 2008-11-27 | Multi-core cable tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101750564A true CN101750564A (en) | 2010-06-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810227608A Pending CN101750564A (en) | 2008-11-27 | 2008-11-27 | Multi-core cable tester |
Country Status (1)
| Country | Link |
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| CN (1) | CN101750564A (en) |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102169151A (en) * | 2010-11-16 | 2011-08-31 | 北京航天测控技术开发公司 | Cable network parallel test method |
| CN102466769A (en) * | 2010-11-03 | 2012-05-23 | 北京普源精电科技有限公司 | Test equipment for realizing on-off test with adjustable threshold and method thereof |
| CN102520292A (en) * | 2011-12-26 | 2012-06-27 | 广州电缆厂有限公司 | Multi-core cable voltage test conversion device |
| CN102680859A (en) * | 2012-05-31 | 2012-09-19 | 北京空间飞行器总体设计部 | Conduction and insulation testing method for cable network |
| CN102937669A (en) * | 2012-11-06 | 2013-02-20 | 宁波敏实汽车零部件技术研发有限公司 | Vehicle power-operated sliding door anti-pinch strip detection circuit |
| CN103018569A (en) * | 2012-12-10 | 2013-04-03 | 深圳创维－Rgb电子有限公司 | Instrument and method for testing wire impedance |
| CN103513153A (en) * | 2013-10-11 | 2014-01-15 | 上海富欣智能交通控制有限公司 | Input and output channel mixed wire detecting circuit |
| CN105223461A (en) * | 2015-09-25 | 2016-01-06 | 长治清华机械厂 | A kind of polycore cable insulation, short-circuit detecting device and method |
| CN106093676A (en) * | 2016-06-07 | 2016-11-09 | 中国南方航空工业(集团)有限公司 | Outfield fault detection and diagnosis equipment |
| CN106324441A (en) * | 2016-11-08 | 2017-01-11 | 骆香山 | Cable detection system based on single chip |
| CN107356851A (en) * | 2017-07-12 | 2017-11-17 | 北京电子工程总体研究所 | A kind of electric cable insulation tester and the method tested using the device |
| CN108761205A (en) * | 2018-05-21 | 2018-11-06 | 中国电建集团河南工程有限公司 | Cable through and the test method and tester of insulation |
| CN112540225A (en) * | 2020-11-06 | 2021-03-23 | 广西电网有限责任公司南宁供电局 | Testing device and testing method for secondary loop insulation resistance |
| CN113805034A (en) * | 2020-06-12 | 2021-12-17 | 神讯电脑(昆山)有限公司 | Keyboard circuit board detection device with FFC winding displacement |
-
2008
- 2008-11-27 CN CN200810227608A patent/CN101750564A/en active Pending
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102466769A (en) * | 2010-11-03 | 2012-05-23 | 北京普源精电科技有限公司 | Test equipment for realizing on-off test with adjustable threshold and method thereof |
| CN102169151A (en) * | 2010-11-16 | 2011-08-31 | 北京航天测控技术开发公司 | Cable network parallel test method |
| CN102520292A (en) * | 2011-12-26 | 2012-06-27 | 广州电缆厂有限公司 | Multi-core cable voltage test conversion device |
| CN102680859B (en) * | 2012-05-31 | 2014-11-19 | 北京空间飞行器总体设计部 | Conduction and insulation testing method for cable network |
| CN102680859A (en) * | 2012-05-31 | 2012-09-19 | 北京空间飞行器总体设计部 | Conduction and insulation testing method for cable network |
| CN102937669A (en) * | 2012-11-06 | 2013-02-20 | 宁波敏实汽车零部件技术研发有限公司 | Vehicle power-operated sliding door anti-pinch strip detection circuit |
| CN102937669B (en) * | 2012-11-06 | 2017-09-22 | 宁波敏实汽车零部件技术研发有限公司 | A kind of automobile electric sliding door anti-biting bar detects circuit |
| CN103018569B (en) * | 2012-12-10 | 2015-08-05 | 深圳创维－Rgb电子有限公司 | A kind of wire rod impedance instrument and method of testing |
| CN103018569A (en) * | 2012-12-10 | 2013-04-03 | 深圳创维－Rgb电子有限公司 | Instrument and method for testing wire impedance |
| CN103513153A (en) * | 2013-10-11 | 2014-01-15 | 上海富欣智能交通控制有限公司 | Input and output channel mixed wire detecting circuit |
| CN103513153B (en) * | 2013-10-11 | 2016-05-04 | 上海富欣智能交通控制有限公司 | I/O channel swinging cross testing circuit |
| CN105223461A (en) * | 2015-09-25 | 2016-01-06 | 长治清华机械厂 | A kind of polycore cable insulation, short-circuit detecting device and method |
| CN106093676A (en) * | 2016-06-07 | 2016-11-09 | 中国南方航空工业(集团)有限公司 | Outfield fault detection and diagnosis equipment |
| CN106324441A (en) * | 2016-11-08 | 2017-01-11 | 骆香山 | Cable detection system based on single chip |
| CN107356851A (en) * | 2017-07-12 | 2017-11-17 | 北京电子工程总体研究所 | A kind of electric cable insulation tester and the method tested using the device |
| CN108761205A (en) * | 2018-05-21 | 2018-11-06 | 中国电建集团河南工程有限公司 | Cable through and the test method and tester of insulation |
| CN113805034A (en) * | 2020-06-12 | 2021-12-17 | 神讯电脑(昆山)有限公司 | Keyboard circuit board detection device with FFC winding displacement |
| CN113805034B (en) * | 2020-06-12 | 2024-03-19 | 神讯电脑(昆山)有限公司 | Keyboard circuit board detection device with FFC flat cable |
| CN112540225A (en) * | 2020-11-06 | 2021-03-23 | 广西电网有限责任公司南宁供电局 | Testing device and testing method for secondary loop insulation resistance |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100623 |