CN203164345U - Multi-core cable detector - Google Patents
Multi-core cable detector Download PDFInfo
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- CN203164345U CN203164345U CN 201320043969 CN201320043969U CN203164345U CN 203164345 U CN203164345 U CN 203164345U CN 201320043969 CN201320043969 CN 201320043969 CN 201320043969 U CN201320043969 U CN 201320043969U CN 203164345 U CN203164345 U CN 203164345U
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Abstract
A multi-core cable detector includes a host computer and a guest computer, wherein the guest computer comprises a serial port circuit, an input-terminal one-from-multiple switch circuit, an output-terminal one-from-multiple switch circuit, an A/D conversion circuit and a single-chip microcomputer; and the serial port circuit, the input-terminal one-from-multiple switch circuit, the output-terminal one-from-multiple switch circuit and the A/D conversion circuit are connected with the single-chip microcomputer. A plurality of pairs of multi-core cable sockets in the guest computer is connected with the input-terminal one-from-multiple switch circuit and the output-terminal one-from-multiple switch circuit. The host computer is communicated with the guest computer by a serial port. In the scheme, a switching cable plug is connected with a to-be-tested multi-core cable and then is plugged in the multi-core cable socket, the host computer transmits test instructions to the guest computer and the detector can test on-off and short circuit states of the multi-core cable.
Description
Technical field
The utility model relates to a kind of cable detection instrument, especially a kind of Detector for Multi-core Cables.
Background technology
Many industries are after having assembled polycore cable, all need polycore cable open circuit, short circuit, conducting situation are tested, but the on off test of the cable of most of industries still rests on the manual stage, use multimeter or hummer, two people cooperate, pointwise is carried out break-make and is detected, and this method is applicable to that quantity is few, the product that heart yearn is few.The special manufacturer of wireline test instrument is also arranged, functions such as cable insulation test, Hi-pot test, on off test, short-circuit test are integrated.
Use multimeter or hummer, two people cooperate, pointwise is carried out break-make and is detected, this test to polycore cable is that speed is slow, intensity is big, dull, repeat, very easily produce tired work, work efficiency is extremely low, especially aspect the test short circuit, the more many tests of pin are just complicated, have human error especially easily, under-enumeration is more serious, is difficult to guarantee test mass.Special test equipment is expensive, and the test operation complexity is used inconvenient.
China Patent No. is that 93203883.2 patent documentation discloses a kind of Detector for Multi-core Cables, comprises shell, operating switch, pilot lamp, charactron, cable socket and testing circuit part.This patent does not adopt the mode of PC control, testing tool circuit structure complexity, and volume is big, and by artificial break-make, short circuit of comparing the level signal judgement cable core on cable both sides, speed is made mistakes slowly and easily.
China Patent No. is the checkout equipment that 200710017384.8 patent documentation discloses a kind of detection streamer, comprise controller, man-machine interface and the measurement module of the I/O end of controller, the driver that also comprises the I/O end that is connected to described controller, the mechanical arm that is connected with driver, the chaining pin that is connected with mechanical arm, controller and measurement module are connected with chaining pin by change-over switch, and mechanical arm is three freedom degree manipulator.The testing tool of this special use is expensive, and complicated operation causes and detects the cost increase, is difficult to popularize.
China Patent No. is that 200820160694.5 patent documentation discloses a kind of quick cable detector, constituted with door and three-state buffer, digital display tube by corresponding with input cable radical or door, four inputs, detection streamer is connected on input end corresponding or door respectively, or gate output terminal connect four the input with the door, four the input with output termination three-state buffer, three-state buffer be connected digital display tube.This patent does not adopt the PC control mode, and needs manually every cable conductor is connected to digital gate circuit when detecting, and operates very complicatedly, and once can only detect 8 cable cores at most, and speed is very low.
Summary of the invention
The purpose of this utility model provides a kind of detector of easy to use, cheap, reliable operation, can test break-make and the short trouble of polycore cable fast and accurately.In order to achieve the above object, the utility model provides a kind of Detector for Multi-core Cables, comprises host computer, slave computer.Described slave computer comprises power circuit, serial port circuit, single-chip microcomputer and peripheral circuit, input end multiselect one on-off circuit, output terminal multiselect one on-off circuit, a plurality of paired polycore cable sockets and transit cable plug, the A/D change-over circuit, wherein, described serial port circuit, described input end multiselect one on-off circuit, described output terminal multiselect one on-off circuit, described A/D change-over circuit all is connected with described single-chip microcomputer, described paired polycore cable socket and described input end multiselect one on-off circuit, described output terminal multiselect one on-off circuit connects
Described host computer communicates to connect by serial ports and described slave computer.Described host computer communicates to connect by serial ports and described slave computer.
Described input end multiselect one switch selects circuit to be embedded with a divider resistance, a shunt resistance and at least one analog switch chip.
Described output terminal multiselect one switch selects circuit to be embedded with at least one analog switch chip.
Described analog switch chip adopts CD4067.
Described A/D change-over circuit contains voltage follower and analog to digital converter.
Described voltage follower adopts single supply operational amplifier A D8605, and described analog to digital converter adopts AD7694.
The utility model can the accurate detection multi-coaxial cable assembly, the break-make of interconnecting device, short circuit phenomenon, can detect automatically and report trouble spot, storage detect functions such as data automatically.Have simple to operate, low price, can be widely used in the batch process of multi-coaxial cable assembly
Description of drawings:
Fig. 1 is the utility model design frame chart.
Fig. 2 is single-chip microcomputer and peripheral circuit diagram.
Fig. 3 is serial port circuit figure.
Fig. 4 is A/D change-over circuit figure.
Embodiment:
The quick break-make of the multi-core cable wire that the utility model relates to and short-circuit detecting instrument, Fig. 1 are the system charts of this detector.It comprises host computer, slave computer, and host computer communicates to connect by serial ports and described slave computer.Host computer is common at ordinary times computing machine, comprises computer hardware platforms and test control operation software, carries out the test of polycore cable by the software control slave computer; The slave computer outside is provided with a plurality of paired polycore cable sockets and transit cable plug, and during detection, the transit cable plug is connected the back and inserts described polycore cable socket with cable under test two.
The structure of host computer.
Host computer comprises hardware interface module, human-computer interaction module, data processing module, database module, state display module five major parts.Hardware interface module utilizes serial ports to link to each other with slave computer by the RS-232 bus protocol, and the data-signal of slave computer collection is passed to host computer; Human-computer interaction module is realized cable information typing, cable information inquiry, test result is checked and function such as preservation, data processing module is mainly by Algorithm Analysis, optimization test data, be saved in database then, and directly show test results at screen by the state display module.
The structure of slave computer.
The test box circuit board comprises: power circuit, single-chip microcomputer and peripheral circuit thereof, serial port circuit, A/D change-over circuit, input end multiselect one on-off circuit, output terminal multiselect one on-off circuit.Comprise paired polycore cable socket on the casing, use in pairs with corresponding transit cable plug.
Power circuit can adopt the existing DC circuit of stablizing.Because power generation circuit is gone up existing matured product on the market at present, so the utility model has used existing stabilized power source DC circuit.
Single-chip microcomputer and peripheral circuit diagram are as shown in Figure 2.
Single-chip microcomputer is the core of whole slave computer, and the test channel of basic control system is selected and controlled AD conversion chip data-switching and read, and passes test data back computing machine.Singlechip chip is selected AT89S52 for use, is 8 Flash single-chip microcomputers of atmel corp, is a kind of low-power consumption, high-performance CMOS 8 8-digit microcontrollers.AT89S52 has the 8K byte at system programmable Flash storer, 1000 erase-write cycles, but online programming, 256 byte RAM, 32 I/O mouth lines, WatchDog Timer, 8 interrupt sources, the universal asynchronous reception/dispensing device of full duplex UART() serial-port, realize the communication with computing machine.Single-chip microcomputer also can use as models such as AT89C51, AT89S51.
Peripheral circuit comprises oscillatory circuit, reset circuit, system works indicating circuit, biasing circuit.
Oscillatory circuit provides the frequency of operation of 11.0592MHZ for system.This circuit is by a crystal oscillator (Y1), two electric capacity (C8, C9) formations.Crystal oscillator frequency is 11.05902MHZ, and (C8 C9) is 20PF to two electric capacity.The output terminal of pin of crystal oscillator (Y1) and AT89S52 oscillator inverting amplifier, namely 18 pin connect, and the ground connection afterwards of connect with electric capacity (C8); The input end of another pin and AT89S52 oscillator inverting amplifier and internal clocking generation circuit, namely 19 pin connect, and the ground connection afterwards of connect with electric capacity (C9).Concerning crystal oscillator (Y1), (C8 C9) constitutes load capacitance to two electric capacity.
Reset circuit plays reset response when powering in system.This circuit is made of resistance (R31), polar capacitor (C7).Polar capacitor (C7) positive pole meets power vd D; Negative pole connects the RESET input of AT89S52, i.e. 9 pin, and by resistance (R31) ground connection.Polar capacitor (C7) is 16V/22uF, and resistance (R31) resistance is 10K.
System works indicating circuit indication mechanism duty.Constituted by light emitting diode (D2) and resistance (R32).Light emitting diode (D2) minus earth, anodal with receive AT89S52 chip exterior data-carrier store read gate input end after resistance (R32) is connected, i.e. 17 pin.After system resetted, light emitting diode (D2) every flicker in 1 second once.Resistance (R32) resistance is 100K Ω.
Biasing circuit comprises the pull-up resistor that a resistance is 10K (R34), and this resistance one end connects power supply, and 8 taps in addition connect the pin of AT89S52 chip P0.0-P0.7 successively.
Serial port circuit as shown in Figure 3.
Serial port circuit is realized level conversion.Single-chip microcomputer has the serial communication interface of a full duplex, so can carry out serial communication easily between single-chip microcomputer and the computer.The serial ports of computer is the RS232 level, and the serial ports of single-chip microcomputer is Transistor-Transistor Logic level, and the utility model has adopted special chip MAX232 to carry out level conversion.The utility model has adopted three-wire system to connect serial ports, that is 9 needle serial ports of computer only connect 3 lines wherein: the 5th pin GND ground connection, the 2nd pin RXD are connected with MAX232 the 14th pin, the 3rd pin TXD is connected with MAX232 the 13rd pin.MAX232 the 12nd pin and AT89S52 serial input port, namely 10 pin connect, the 11st pin and AT89S52 serial delivery outlet, namely 11 pin connect.
Input end multiselect one on-off circuit contains 8 CD4067 chips, a current-limiting resistance (R25), divider resistance (R38), accurate more resistance value when regulating divider resistance (R38) acquisition short circuit calibration in the use.VCC and VDD be two independently 5V power supply: VCC the reference voltage that provides an AD to sample for system is provided with 8 CD4067 chip 1 pins in the described circuit with divider resistance (R38) and current-limiting resistance (R25) series connection back; VDD connects 24 pin, for chip provides working power.8 CD4067 chip pin connection situations are: 10,11,13,14 pin of each sheet connect corresponding to 39,38,36,37 pin of single-chip microcomputer; Every 12 pin ground connection; 15 pin of each sheet correspond respectively to the corresponding connection of 8 pins of P1 mouth; All the other pin of each sheet are corresponding connection with the polycore cable socket respectively, totally 128 paths.
Output terminal multiselect one on-off circuit contains 8 CD4067 chips, totally 128 passages.Described circuit 8 CD4067 chip pins connection situation is: 1 pin ground connection of each sheet; 24 pin meet VDD; 10,11,13,14 pin are connected with 35,34,32,33 pin of single-chip microcomputer respectively; 15 pin of each sheet correspond respectively to the corresponding connection of 8 pins of P2 mouth; All the other pin of each sheet are corresponding connection with the polycore cable socket respectively, and totally 128 paths are corresponding one by one with 128 paths of input end.
The number of CD4067 chip increases in real process or reduces according to real work situation needs in above-mentioned input end multiselect one on-off circuit and output terminal multiselect one on-off circuit, be at least one, detecting the core number at most in the present embodiment circuit is 128 cores, if need to increase test heart yearn number, can and increase multiselect one on-off circuit by expansion control chip pin and realize.
Above-mentioned input end multiselect one on-off circuit and output terminal multiselect one on-off circuit also can adopt relay to form.
A/D change-over circuit figure as shown in Figure 4, the AD conversion chip is selected the AD7694 of AD company for use, be a 16, gradual approaching A/D converter (ADC), adopt single power supply, voltage range is between the 2.75V to 5.25V, can reach 250KSPS during throughput rate during the 5V power supply, and reference voltage (REF) is provided by the outside, and can be independent of supply voltage, power consumption and throughput rate are the linear changing relation.AD8605 is the integrated operational amplifier chip, does voltage follower usefulness, the internal resistance of source when improving the AD conversion.Two resistance (R33, R37) play the current-limiting protection effect.Polar capacitor (C10) carries out filtering to reference voltage.The 5th, 6,7 pin of AD7694 are connected with the 12nd, 13,14 pin of singlechip chip respectively.When cable is surveyed the cable core conducting, the cable core bulk resistor produces voltage drop, single-chip microcomputer scanning output end multiselect one on-off circuit, 1 pin that obtains input end multiselect one on-off circuit CD4067 produces one and this voltage drop corresponding simulating voltage signal, and this signal is converted into digital signal through AD7694 and passes to single-chip microcomputer.
Polycore cable socket and transit cable plug are the parts that whole slave computer is connected with polycore cable, the existing mode technology that connected mode adopts.Transit cable plug A one end inputs or outputs with the polycore cable socket and links to each other, and the other end is made different plugs according to the difference of actual test cable and linked to each other with polycore cable to be measured.Transit cable plug B end and category-A are seemingly.
The related quick break-make of multi-core cable wire and the short-circuit detecting instrument course of work of the utility model is as described below.
The user imports detection information in host computer, single-chip microcomputer receives the corresponding path conducting of control input end, instruction back multiselect one on-off circuit, and scanning output end multiselect one on-off circuit successively, input end switch forward voltage, output terminal switch conduction voltage and cable core forward voltage sum are converted into digital signal, pass host computer back by single-chip microcomputer, data processing module in the host computer goes out to test the resistance value of inner core heart yearn according to this calculated signals, and compare with the zero-regulator resistor value, and then judge break-make and the short-circuit condition of inner core heart yearn.
Claims (2)
1. Detector for Multi-core Cables, comprise host computer, slave computer, it is characterized in that: described slave computer comprises power circuit, serial port circuit, single-chip microcomputer and peripheral circuit, input end multiselect one on-off circuit, output terminal multiselect one on-off circuit, a plurality of paired polycore cable sockets and transit cable plug, the A/D change-over circuit, wherein, described serial port circuit, described input end multiselect one on-off circuit, described output terminal multiselect one on-off circuit, described A/D change-over circuit all is connected with described single-chip microcomputer, described paired polycore cable socket and described input end multiselect one on-off circuit, described output terminal multiselect one on-off circuit connects
Described host computer communicates to connect by serial ports and described slave computer.
2. a kind of Detector for Multi-core Cables as claimed in claim 1 is characterized in that, described input end multiselect one switch selects circuit to be embedded with a divider resistance, a shunt resistance and at least one analog switch chip.
3. a kind of Detector for Multi-core Cables as claimed in claim 1 is characterized in that, described output terminal multiselect one switch selects circuit to be embedded with at least one analog switch chip.
4. as claim 2 or 3 described a kind of Detector for Multi-core Cables, it is characterized in that described analog switch chip adopts CD4067.
5. a kind of Detector for Multi-core Cables as claimed in claim 4 is characterized in that, described A/D change-over circuit contains voltage follower and analog to digital converter.
6. a kind of Detector for Multi-core Cables as claimed in claim 5 is characterized in that, described voltage follower adopts single supply operational amplifier A D8605, and described analog to digital converter adopts AD7694.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320043969 CN203164345U (en) | 2013-01-28 | 2013-01-28 | Multi-core cable detector |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201320043969 CN203164345U (en) | 2013-01-28 | 2013-01-28 | Multi-core cable detector |
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| CN 201320043969 Expired - Fee Related CN203164345U (en) | 2013-01-28 | 2013-01-28 | Multi-core cable detector |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105372546A (en) * | 2015-10-27 | 2016-03-02 | 上海航天精密机械研究所 | Point location identification device of electric connectors |
| CN105548794A (en) * | 2016-01-14 | 2016-05-04 | 苏州成科自控设备有限公司 | Patch board detection circuit |
| CN105866610A (en) * | 2016-04-15 | 2016-08-17 | 中国海洋石油总公司 | Detection device and method for connecting bus |
| CN107153145A (en) * | 2017-03-29 | 2017-09-12 | 东莞讯滔电子有限公司 | Cable detecting device and method |
| CN108761267A (en) * | 2018-06-08 | 2018-11-06 | 安徽捷迅光电技术有限公司 | A kind of color selector valve line test device |
| CN110907852A (en) * | 2018-09-14 | 2020-03-24 | 中车大同电力机车有限公司 | Switching device and short circuit detection method |
| CN112485722A (en) * | 2020-11-24 | 2021-03-12 | 济南吉美乐电源技术有限公司 | Communication cable on-off detection device based on STM32 singlechip |
| CN114076870A (en) * | 2021-11-22 | 2022-02-22 | 河南平原光电有限公司 | Multi-core cable connectivity detection device and detection method thereof |
-
2013
- 2013-01-28 CN CN 201320043969 patent/CN203164345U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN105372546A (en) * | 2015-10-27 | 2016-03-02 | 上海航天精密机械研究所 | Point location identification device of electric connectors |
| CN105548794A (en) * | 2016-01-14 | 2016-05-04 | 苏州成科自控设备有限公司 | Patch board detection circuit |
| CN105866610A (en) * | 2016-04-15 | 2016-08-17 | 中国海洋石油总公司 | Detection device and method for connecting bus |
| CN107153145A (en) * | 2017-03-29 | 2017-09-12 | 东莞讯滔电子有限公司 | Cable detecting device and method |
| CN108761267A (en) * | 2018-06-08 | 2018-11-06 | 安徽捷迅光电技术有限公司 | A kind of color selector valve line test device |
| CN108761267B (en) * | 2018-06-08 | 2020-12-22 | 安徽捷迅光电技术有限公司 | Look selects quick-witted valve line testing arrangement |
| CN110907852A (en) * | 2018-09-14 | 2020-03-24 | 中车大同电力机车有限公司 | Switching device and short circuit detection method |
| CN112485722A (en) * | 2020-11-24 | 2021-03-12 | 济南吉美乐电源技术有限公司 | Communication cable on-off detection device based on STM32 singlechip |
| CN114076870A (en) * | 2021-11-22 | 2022-02-22 | 河南平原光电有限公司 | Multi-core cable connectivity detection device and detection method thereof |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130828 Termination date: 20210128 |
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| CF01 | Termination of patent right due to non-payment of annual fee |