CN104090205A - Cable connection testing circuit - Google Patents
Cable connection testing circuit Download PDFInfo
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- CN104090205A CN104090205A CN201410255043.4A CN201410255043A CN104090205A CN 104090205 A CN104090205 A CN 104090205A CN 201410255043 A CN201410255043 A CN 201410255043A CN 104090205 A CN104090205 A CN 104090205A
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Abstract
The invention discloses a cable connection testing circuit. The cable connection testing circuit comprises a CPU module, a communication module, a multipath channel selection module, an input interface, an output interface and a power supply module. The power supply module is connected with the CPU module, the communication module is connected with the CPU module, the multipath channel selection module is connected with the CPU module, the CPU module is connected with a button interface, a liquid crystal display screen and a buzzer on the CPU module, the input interface is connected with the multipath channel selection module, and the output interface is connected with the multipath channel selection module. According to the cable connection testing circuit, multi-mode switching is realized, and multiple functions can be realized under different modes. The testing of cables is convenient and fast. Besides, the cable connection testing circuit is externally provided with thirteen wires, and the thirteen wires can be simultaneously tested. In case that a large number of cables have to be tested, the multiple cables can be simultaneously measured, enormous time can be saved, and the testing is more rapid.
Description
Technical field
The present invention relates to a kind of test circuit, especially relate to a kind of cable connecting test circuit.
Background technology
Cable is photosignal delivery means, is mainly used to control installation, connection device, transmits electric power and signal transmission etc., and be article common in daily life.Because cable is mainly used in the transmission of signal, therefore the physical characteristics to cable and electric property have certain requirement.In use need cable to carry out the test of each side, detect its performance whether normal and meet request for utilization.
The mode that the many employings of tradition are manual and individual event tester carries out test step by step.Manual test is rely on technician's exact connect ion contact and detect, and likely can produce certain personal error.Manual test is comparatively consuming time, and the fine degree of measuring technology personnel to this work that place one's entire reliance upon, and likely occurs undetected.Individual event tester carries out test step by step, and testing a cable needs multiple testers respectively it to be tested, and uses convenient and swift not.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of cable connecting test circuit that can conveniently test multi-cable.
The present invention solves the problems of the technologies described above adopted technical scheme: a kind of cable connecting test circuit, comprise CPU module, communication module, multiplexer channel is selected module, input interface, output interface and power module, described power module is connected with CPU module, described communication module is connected with CPU module, described multiplexer channel selects module to be connected with CPU module, in described CPU module, be connected with keystroke interface, LCDs interface and hummer, described input interface selects module to be connected with multiplexer channel, described output interface selects module to be connected with multiplexer channel.
Described power module comprises that model is 1117 voltage stabilizing chip, the 4th electric capacity, the 5th electric capacity and the 3rd diode, the first pin ground connection of described voltage stabilizing chip, the first pin of voltage stabilizing chip is connected to plug, the three-prong of described voltage stabilizing chip is successively by the second resistance, the first diode, the first inductance is connected to plug, the second pin of voltage stabilizing chip is connected with the positive terminal of the 3rd diode, the negative pole end of the 3rd described diode is connected with the three-prong of voltage stabilizing chip, the 4th pin of described voltage stabilizing chip is connected with the positive terminal of the 3rd diode, the second pin of voltage stabilizing chip is connected with one end of the 4th electric capacity, the other end ground connection of the 4th described electric capacity, one end of the 4th electric capacity is connected with VCC output terminal, the second chip of voltage stabilizing chip is connected with one end of the 5th electric capacity, the other end ground connection of the 5th described electric capacity, one end of the 5th electric capacity is connected with VDD output terminal, the first pin of described voltage stabilizing chip is connected with supply socket with three-prong.
Described CPU module comprises the 4th resistance, model is the first chip of PIC18F4685 and the second chip that model is SIP1X5, the 6th pin ground connection of the first described chip, the 7th pin of the first chip is connected to ground by the 20 electric capacity and the 21 electric capacity of parallel connection, the 28 pin of the first described chip is by the 22 capacity earth, the 29 pin ground connection of the first chip, the 16 pin of the first described chip is connected with the 5th pin of the second described chip, the 17 pin of the first chip is connected with the 4th pin of the second chip, the three-prong ground connection of the second described chip, the second pin of the second chip is connected to VCC output terminal, the first pin of the second chip is connected with the 18 pin of the first chip, one end of the 4th described resistance is connected with the first pin of the second chip, the other end of the 4th resistance is by the 6th capacity earth, the other end of the 4th resistance is connected to VCC output terminal by the 3rd resistance.
Described multiplexer channel selects module to comprise the 5th chip and the 6th chip that two models are 74HC138, after being connected with the 6th pin of the 6th chip, the 5th pin of the 5th described chip is connected with the 15 pin of the first chip, the 4th pin ground connection of the 5th described chip, the 6th pin of the 5th chip is by ground connection after the 23 electric capacity, the 8th pin ground connection of the 5th chip, the 16 pin of the 5th chip is connected to VCC output terminal, the 4th pin of the 6th chip, the 5th pin and the equal ground connection of the 8th pin, the 16 pin of the 6th chip is connected to VCC output terminal.
Described output interface comprises 12 the first light emitting diodes and 12 the first triodes, the first described light emitting diode is corresponding one by one with the first triode, the positive terminal of the first described light emitting diode is all connected to VCC output terminal, the negative pole end of the first light emitting diode is connected to multiplexer channel by resistance respectively and selects module, the emitter of the first described triode is all connected to ground, and the collector of the first triode is connected to accessory power outlet by resistance respectively.
Described input interface comprises 12 the second light emitting diodes and 12 the second triodes, the second described light emitting diode is corresponding one by one with the second triode, all be connected to+12V of the positive terminal supply voltage of the second described light emitting diode, the negative pole end of the second light emitting diode is connected to input socket by resistance respectively, the emitter of the second described triode is all connected to ground, and the collector of the second triode is connected to VCC output terminal by resistance respectively.
Described LCDs interface comprises that model is the 7th chip of DIP10X2, the 7th described chip is connected with the first chip, the first pin ground connection of the 7th described chip, the second pin of the 7th chip by the 7th in parallel electric capacity and the 8th electric capacity after ground connection, the second pin of the 7th chip is connected to VCC output terminal, and the 4th pin of the 7th chip is connected to VCC output terminal by the 5th resistance.
Described keystroke interface comprises button socket, and described button socket is connected with the first chip, and button socket is connected to VCC output terminal by resistance.
Between described hummer and the first chip, be connected with the second triode and the 19 resistance, the 42 pin of the first described chip is connected with the base stage of the second triode by after the 19 resistance, the emitter of the second described triode is connected to VCC output terminal, the collector of the second triode is connected with the first pin of hummer, the second pin ground connection of hummer.
Compared with prior art, the invention has the advantages that this cable connecting test circuit has various modes and switches, under different patterns, can realize several functions.Make the convenient test of cable quick.In addition, the present invention is equipped with 13 wires outward, can carry out the test of 13 cables simultaneously.Test the situation of a large amount of cables at needs, can measure multi-cable simultaneously and will save a large amount of time, make test more quick.
Brief description of the drawings
Fig. 1 is block diagram of the present invention;
Fig. 2 is the circuit diagram of CPU module of the present invention;
Fig. 3 is the circuit diagram of power module of the present invention;
Fig. 4 is the circuit diagram that multiplexer channel of the present invention is selected module;
Fig. 5 is the circuit diagram of output module of the present invention;
Fig. 6 is the circuit diagram of load module of the present invention;
Fig. 7 is the circuit diagram of LCDs interface of the present invention;
Fig. 8 is the circuit diagram of keystroke interface of the present invention;
Fig. 9 is the circuit diagram of hummer part of the present invention.
Embodiment
Below in conjunction with accompanying drawing, embodiment is described in further detail the present invention.
As shown in Figures 1 to 9: a kind of cable connecting test circuit, comprise CPU module 1, communication module 2, multiplexer channel selection module 3, input interface 5, output interface 4 and power module 6, power module 6 is connected with CPU module 1, communication module 2 is connected with CPU module 1, multiplexer channel selects module 3 to be connected with CPU module 1, in CPU module 1, be connected with keystroke interface 7, LCDs interface 8 and hummer 9, input interface 5 selects module 3 to be connected with multiplexer channel, and output interface 4 selects module 3 to be connected with multiplexer channel.
Power module 6 comprises that model is 1117 voltage stabilizing chip U1, the 4th capacitor C 4, the 5th capacitor C 5 and the 3rd diode D3, the first pin ground connection of voltage stabilizing chip U1, the first pin of voltage stabilizing chip U1 is connected to plug, the three-prong of voltage stabilizing chip U1 is successively by the second resistance, the first diode, the first inductance is connected to plug, the second pin of voltage stabilizing chip U1 is connected with the positive terminal of the 3rd diode D3, the negative pole end of the 3rd diode D3 is connected with the three-prong of voltage stabilizing chip U1, the 4th pin of voltage stabilizing chip U1 is connected with the positive terminal of the 3rd diode D3, the second pin of voltage stabilizing chip U1 is connected with one end of the 4th capacitor C 4, the other end ground connection of the 4th capacitor C 4, one end of the 4th capacitor C 4 is connected with VCC output terminal, the second chip P2 of voltage stabilizing chip U1 is connected with one end of the 5th capacitor C 5, the other end ground connection of the 5th capacitor C 5, one end of the 5th capacitor C 5 is connected with VDD output terminal, the first pin of voltage stabilizing chip U1 is connected with supply socket with three-prong.
CPU module 1 comprises the 4th resistance R 4, model is the first chip U2 of PIC18F4685 and the second chip P2 that model is SIP1X5, the 6th pin ground connection of the first chip U2, the 7th pin of the first chip U2 is connected to ground by the 20 capacitor C the 20 and the 21 capacitor C 21 of parallel connection, the 28 pin of the first chip U2 is by the 22 capacitor C 22 ground connection, the 29 pin ground connection of the first chip U2, the 16 pin of the first chip U2 is connected with the 5th pin of the second chip P2, the 17 pin of the first chip U2 is connected with the 4th pin of the second chip P2, the three-prong ground connection of the second chip P2, the second pin of the second chip P2 is connected to VCC output terminal, the first pin of the second chip P2 is connected with the 18 pin of the first chip U2, one end of the 4th resistance R 4 is connected with the first pin of the second chip P2, the other end of the 4th resistance R 4 is by the 6th capacitor C 6 ground connection, the other end of the 4th resistance R 4 is connected to VCC output terminal by the 3rd resistance.
Multiplexer channel selects module 3 to comprise the 5th chip U5 and the 6th chip U6 that two models are 74HC138, after being connected with the 6th pin of the 6th chip U6, the 5th pin of the 5th chip U5 is connected with the 15 pin of the first chip U2, the 4th pin ground connection of the 5th chip U5, the 6th pin of the 5th chip U5 is by the rear ground connection of the 23 capacitor C 23, the 8th pin ground connection of the 5th chip U5, the 16 pin of the 5th chip U5 is connected to VCC output terminal, the 4th pin of the 6th chip U6, the 5th pin and the equal ground connection of the 8th pin, the 16 pin of the 6th chip U6 is connected to VCC output terminal.
Output interface 4 comprises 12 the first light emitting diodes and 12 the first triodes, the first light emitting diode is corresponding one by one with the first triode, the positive terminal of the first light emitting diode is all connected to VCC output terminal, the negative pole end of the first light emitting diode is connected to multiplexer channel by resistance respectively and selects module 3, the emitter of the first triode is all connected to ground, and the collector of the first triode is connected to accessory power outlet P5 by resistance respectively.
Input interface 5 comprises 12 the second light emitting diodes and 12 the second triodes, the second light emitting diode is corresponding one by one with the second triode, all be connected to+12V of the positive terminal of the second light emitting diode supply voltage, the negative pole end of the second light emitting diode is connected to input socket P6 by resistance respectively, the emitter of the second triode is all connected to ground, and the collector of the second triode is connected to VCC output terminal by resistance respectively.
LCDs interface 8 comprises that model is the 7th chip CZ2 of DIP10X2, the 7th chip CZ2 is connected with the first chip U2, the first pin ground connection of the 7th chip CZ2, the second pin of the 7th chip CZ2 is by the 7th capacitor C 7 and the rear ground connection of the 8th capacitor C 8 in parallel, the second pin of the 7th chip CZ2 is connected to VCC output terminal, and the 4th pin of the 7th chip CZ2 is connected to VCC output terminal by the 5th resistance.
Keystroke interface 7 comprises button socket P7, and button socket P7 is connected with the first chip U2, and button socket P7 is connected to VCC output terminal by resistance.
Between hummer and the first chip U2, be connected with the second triode Q2 and the 19 resistance R 19, the 42 pin of the first chip U2 passes through to be connected with the base stage of the second triode Q2 after the 19 resistance R 19, the emitter of the second triode Q2 is connected to VCC output terminal, the collector of the second triode Q2 is connected with the first pin of hummer, the second pin ground connection of hummer P4.
Claims (9)
1. a cable connecting test circuit, it is characterized in that comprising CPU module, communication module, multiplexer channel selection module, input interface, output interface and power module, described power module is connected with CPU module, described communication module is connected with CPU module, described multiplexer channel selects module to be connected with CPU module, in described CPU module, be connected with keystroke interface, LCDs interface and hummer, described input interface selects module to be connected with multiplexer channel, and described output interface selects module to be connected with multiplexer channel.
2. a kind of cable connecting test circuit according to claim 1, it is characterized in that described power module comprises that model is 1117 voltage stabilizing chip, the 4th electric capacity, the 5th electric capacity and the 3rd diode, the first pin ground connection of described voltage stabilizing chip, the first pin of voltage stabilizing chip is connected to plug, the three-prong of described voltage stabilizing chip is successively by the second resistance, the first diode, the first inductance is connected to plug, the second pin of voltage stabilizing chip is connected with the positive terminal of the 3rd diode, the negative pole end of the 3rd described diode is connected with the three-prong of voltage stabilizing chip, the 4th pin of described voltage stabilizing chip is connected with the positive terminal of the 3rd diode, the second pin of voltage stabilizing chip is connected with one end of the 4th electric capacity, the other end ground connection of the 4th described electric capacity, one end of the 4th electric capacity is connected with VCC output terminal, the second chip of voltage stabilizing chip is connected with one end of the 5th electric capacity, the other end ground connection of the 5th described electric capacity, one end of the 5th electric capacity is connected with VDD output terminal, the first pin of described voltage stabilizing chip is connected with supply socket with three-prong.
3. a kind of cable connecting test circuit according to claim 2, it is characterized in that described CPU module comprises the 4th resistance, model is the first chip of PIC18F4685 and the second chip that model is SIP1X5, the 6th pin ground connection of the first described chip, the 7th pin of the first chip is connected to ground by the 20 electric capacity and the 21 electric capacity of parallel connection, the 28 pin of the first described chip is by the 22 capacity earth, the 29 pin ground connection of the first chip, the 16 pin of the first described chip is connected with the 5th pin of the second described chip, the 17 pin of the first chip is connected with the 4th pin of the second chip, the three-prong ground connection of the second described chip, the second pin of the second chip is connected to VCC output terminal, the first pin of the second chip is connected with the 18 pin of the first chip, one end of the 4th described resistance is connected with the first pin of the second chip, the other end of the 4th resistance is by the 6th capacity earth, the other end of the 4th resistance is connected to VCC output terminal by the 3rd resistance.
4. a kind of cable connecting test circuit according to claim 3, it is characterized in that described multiplexer channel selection module comprises the 5th chip and the 6th chip that two models are 74HC138, after being connected with the 6th pin of the 6th chip, the 5th pin of the 5th described chip is connected with the 15 pin of the first chip, the 4th pin ground connection of the 5th described chip, the 6th pin of the 5th chip is by ground connection after the 23 electric capacity, the 8th pin ground connection of the 5th chip, the 16 pin of the 5th chip is connected to VCC output terminal, the 4th pin of the 6th chip, the 5th pin and the equal ground connection of the 8th pin, the 16 pin of the 6th chip is connected to VCC output terminal.
5. a kind of cable connecting test circuit according to claim 2, it is characterized in that described output interface comprises 12 the first light emitting diodes and 12 the first triodes, the first described light emitting diode is corresponding one by one with the first triode, the positive terminal of the first described light emitting diode is all connected to VCC output terminal, the negative pole end of the first light emitting diode is connected to multiplexer channel by a resistance respectively and selects module, the emitter of the first described triode is all connected to ground, and the collector of the first triode is connected to accessory power outlet by a resistance respectively.
6. a kind of cable connecting test circuit according to claim 2, it is characterized in that described input interface comprises 12 the second light emitting diodes and 12 the second triodes, the second described light emitting diode is corresponding one by one with the second triode, all be connected to+12V of the positive terminal supply voltage of the second described light emitting diode, the negative pole end of the second light emitting diode is connected to input socket by a resistance respectively, the emitter of the second described triode is all connected to ground, and the collector of the second triode is connected to VCC output terminal by a resistance respectively.
7. a kind of cable connecting test circuit according to claim 3, it is characterized in that described LCDs interface comprises that model is the 7th chip of DIP10X2, the 7th described chip is connected with the first chip, the first pin ground connection of the 7th described chip, the second pin of the 7th chip by the 7th in parallel electric capacity and the 8th electric capacity after ground connection, the second pin of the 7th chip is connected to VCC output terminal, and the 4th pin of the 7th chip is connected to VCC output terminal by the 5th resistance.
8. a kind of cable connecting test circuit according to claim 3, is characterized in that described keystroke interface comprises button socket, and described button socket is connected with the first chip, and button socket is connected to VCC output terminal by resistance.
9. a kind of cable connecting test circuit according to claim 3, it is characterized in that being connected with the second triode and the 19 resistance between described hummer and the first chip, the 42 pin of the first described chip is connected with the base stage of the second triode by after the 19 resistance, the emitter of the second described triode is connected to VCC output terminal, the collector of the second triode is connected with the first pin of hummer, the second pin ground connection of hummer.
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| CN201410255043.4A CN104090205B (en) | 2014-06-10 | 2014-06-10 | A kind of cable connection test circuit |
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| CN201410255043.4A CN104090205B (en) | 2014-06-10 | 2014-06-10 | A kind of cable connection test circuit |
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| CN104090205A true CN104090205A (en) | 2014-10-08 |
| CN104090205B CN104090205B (en) | 2018-01-16 |
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| CN201410255043.4A Active CN104090205B (en) | 2014-06-10 | 2014-06-10 | A kind of cable connection test circuit |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110261738A (en) * | 2019-07-18 | 2019-09-20 | 广东电网有限责任公司 | A kind of substation cable core is to measuring instrument |
| CN110596520A (en) * | 2019-08-30 | 2019-12-20 | 上海西电高压开关有限公司 | Plug-in detector and circuit for detecting cable connecting control cabinet and combined electrical apparatus |
| CN110672975A (en) * | 2019-10-15 | 2020-01-10 | 浙江中控太阳能技术有限公司 | Automatic detection method and device for heliostat power supply cable connection reliability |
| CN111398861A (en) * | 2020-03-24 | 2020-07-10 | 广西电网有限责任公司梧州供电局 | 2M cable fault detection circuit |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201373901Y (en) * | 2009-02-27 | 2009-12-30 | 天津市森特尔新技术有限公司 | Cable tester |
| CN101937038B (en) * | 2009-07-02 | 2013-12-25 | 中国第一汽车集团公司无锡油泵油嘴研究所 | Intelligent multi-core cable harness detection device |
| US8717927B2 (en) * | 2012-03-15 | 2014-05-06 | Telefonaktiebolaget L M Ericsson (Publ) | Combining channel quality measurements based on sounding reference signals and demodulation reference signals |
| CN202916390U (en) * | 2012-10-08 | 2013-05-01 | 四川金信石信息技术有限公司 | High-precision wireless detector for cable partial discharge |
| CN203981819U (en) * | 2014-06-10 | 2014-12-03 | 宁波长壁流体动力科技有限公司 | A kind of cable connecting test circuit |
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2014
- 2014-06-10 CN CN201410255043.4A patent/CN104090205B/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110261738A (en) * | 2019-07-18 | 2019-09-20 | 广东电网有限责任公司 | A kind of substation cable core is to measuring instrument |
| CN110596520A (en) * | 2019-08-30 | 2019-12-20 | 上海西电高压开关有限公司 | Plug-in detector and circuit for detecting cable connecting control cabinet and combined electrical apparatus |
| CN110672975A (en) * | 2019-10-15 | 2020-01-10 | 浙江中控太阳能技术有限公司 | Automatic detection method and device for heliostat power supply cable connection reliability |
| CN110672975B (en) * | 2019-10-15 | 2020-07-14 | 浙江中控太阳能技术有限公司 | Automatic detection method and device for heliostat power supply cable connection reliability |
| CN111398861A (en) * | 2020-03-24 | 2020-07-10 | 广西电网有限责任公司梧州供电局 | 2M cable fault detection circuit |
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