CN203433073U - Insulation on-off testing apparatus for cable - Google Patents
Insulation on-off testing apparatus for cable Download PDFInfo
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- CN203433073U CN203433073U CN201320567332.9U CN201320567332U CN203433073U CN 203433073 U CN203433073 U CN 203433073U CN 201320567332 U CN201320567332 U CN 201320567332U CN 203433073 U CN203433073 U CN 203433073U
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Abstract
The utility model brings forward an insulation on-off testing apparatus for a cable. The testing apparatus comprises a testing apparatus box body, a pre-display panel, a post-plugging panel, and a circuit board. A power supply state switch is arranged at the pre-display panel; a cable interface socket is fixed at the post-plugging panel; and the circuit board is placed inside the box body. In addition, the circuit board includes a power supply module, an acquisition module, a display module, a storage module, a clock module, an interface module and a PIC 32 series chip. According to the testing apparatus, an optical isolation chip is used for carrying out isolation on an input signal, thereby improving the anti-interference performance of the testing apparatus; a microcontroller is used for controlling the optical isolation chip to carry out switching between cables or different chips of the same cable, thereby improving the testing efficiency; the constant-current technology is used for testing a precise resistance value of the cable, wherein the precision reaches 0.05 ohm; and compensation is carried out on the testing resistance value according to the temperature, the humidity and the empirical coefficient, thereby ensuring accuracy of the testing result.
Description
Technical field
The present invention relates to communication test technical field, be specially cable insulating on off test device.
Background technology
At motor body, manufacture, all need cable performance to test in the process such as hydraulic test and ground experiment, confirm its state to provide foundation for production design department.Testing lines comprises the break-make resistance test of single line cable and two aspects of insulation resistance value test between cable.Only has all the meet the requirements normal use of guarantee cable of these two aspect resistances.Existing conventional means of testing is to rely on multimeter to carry out break-make Insulation test, and this method configures quantity to personnel requirement, and detection efficiency is lower and precision is not high.For the test of multi-core cable, need to use relay to carry out interface switching, test speed is slow and equipment volume is larger.
Summary of the invention
The technical matters solving
The problem existing for solving above-mentioned prior art, the utility model proposes a kind of cable insulating on off test device, when guaranteeing test result accuracy, has improved testing efficiency.
Technical scheme
Technical scheme of the present invention is:
Described cable insulating on off test device, is characterized in that: comprise proving installation box body, preposition display panel, rearmounted patch panel and circuit board; Power supply status switch is placed on preposition display panel, and cable interface socket is fixed on rearmounted patch panel, and circuit board is placed on box body inside;
Described circuit board comprises power module, acquisition module, display module, memory module, clock module, interface module and PIC32 family chip, PIC32 family chip is the centralized control unit of proving installation, and other module is all connected with this chip, power module provides required power supply for main control chip and other functional modules, acquisition module comprises that light is every circuit, constant current test circuit, A/D conversion chip and corresponding cable plug, cable to be tested is connected with cable plug by cable switching head, light every circuit, cable input signal is isolated and by PIC32 family chip control light every circuit switch on off test between different cables with same cable the Insulation test between different cores, constant current test circuit converts measured resistance value to corresponding magnitude of voltage, and by A/D conversion chip, change into digital signal and send into and after PIC32 family chip carries out filtering and calculates, deliver to again display module and demonstrate measured resistance parameter.
Beneficial effect
The beneficial effects of the utility model are:
1. adopt light every chip, input signal to be isolated, to improve the anti-interference of proving installation;
2. the switching that adopts microprocessor controls light to carry out between cable between cores different from same cable every chip, has improved testing efficiency;
3. use the accurate resistance (precision 0.05 Ω) of constant current technology test cable; According to temperature, humidity and experience factor, test resistance is compensated, guaranteed the accuracy of test result;
4. adopt PIC32 series monolithic as microcontroller chip, this built-in chip type USB interface, can facilitate and computing machine between communicate.
Accompanying drawing explanation
Fig. 1 is the principle schematic of the utility model cable break-make insulated test device internal circuit board.
Embodiment
Below in conjunction with specific embodiment, the present invention is described:
Cable insulating on off test device in the present embodiment, comprises proving installation box body, preposition display panel, rearmounted patch panel and circuit board; Power supply status switch is placed on preposition display panel, and cable interface socket is fixed by screws on rearmounted patch panel, and circuit board is placed on box body inside;
As shown in Figure 1, circuit board comprises power module, acquisition module, display module, memory module, clock module, interface module and PIC32 family chip.
PIC32 family chip is the centralized control unit of proving installation, and other module is all connected with this chip, under the coordination of PIC32 family chip is controlled, completes the test of cable break-make insulation and storage and the demonstration work of data.
Power module provides required power supply for main control chip and other functional modules, first by the lithium battery of the external 12v of plug-in unit, then by voltage conversion circuit, produce respectively the magnitude of voltage of 3.3v, 5v, tri-kinds of different sizes of-5v with the disparate modules power supply in circuit.
Acquisition module comprises that light is every circuit, constant current test circuit, A/D conversion chip and corresponding cable plug, cable to be tested is connected with cable plug by cable switching head, light every circuit, cable input signal is isolated and by PIC32 family chip control light every circuit switch on off test between different cables with same cable the Insulation test between different cores.
Constant current test circuit is used for testing the accurate resistance of cable, convert measured resistance value to corresponding magnitude of voltage, and the magnitude of voltage that sampling is obtained changes into digital signal by A/D conversion chip and sends into and after PIC32 family chip carries out filtering and calculates, deliver to display module again and demonstrate measured resistance parameter.
Display module is connected with centralized control unit by general purpose I/O port, and the resistance that display measurement obtains in real time, conveniently carries out quick fault judgement.
It is the Flash chip of 2G that memory module adopts Samsung company size, and the data that acquisition module is obtained are stored.
Interface module comprises a USB interface and a RS232 serial ports.This proving installation can and computing machine or other distinct device between communicate, the resistance value collecting is transferred to computing machine, conveniently carry out data processing.
Claims (1)
1. a cable insulating on off test device, is characterized in that: comprise proving installation box body, preposition display panel, rearmounted patch panel and circuit board; Power supply status switch is placed on preposition display panel, and cable interface socket is fixed on rearmounted patch panel, and circuit board is placed on box body inside;
Described circuit board comprises power module, acquisition module, display module, memory module, clock module, interface module and PIC32 family chip, PIC32 family chip is the centralized control unit of proving installation, and other module is all connected with this chip, power module provides required power supply for main control chip and other functional modules, acquisition module comprises that light is every circuit, constant current test circuit, A/D conversion chip and corresponding cable plug, cable to be tested is connected with cable plug by cable switching head, light every circuit, cable input signal is isolated and by PIC32 family chip control light every circuit switch on off test between different cables with same cable the Insulation test between different cores, constant current test circuit converts measured resistance value to corresponding magnitude of voltage, and by A/D conversion chip, change into digital signal and send into and after PIC32 family chip carries out filtering and calculates, deliver to again display module and demonstrate measured resistance parameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320567332.9U CN203433073U (en) | 2013-09-12 | 2013-09-12 | Insulation on-off testing apparatus for cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320567332.9U CN203433073U (en) | 2013-09-12 | 2013-09-12 | Insulation on-off testing apparatus for cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203433073U true CN203433073U (en) | 2014-02-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320567332.9U Expired - Lifetime CN203433073U (en) | 2013-09-12 | 2013-09-12 | Insulation on-off testing apparatus for cable |
Country Status (1)
| Country | Link |
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| CN (1) | CN203433073U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103941133A (en) * | 2014-04-29 | 2014-07-23 | 西北工业大学 | Ultra-miniature parallel processor cable testing system and method |
| CN104459407A (en) * | 2014-12-12 | 2015-03-25 | 陕西海泰电子有限责任公司 | Portable cable testing device |
| CN104965438A (en) * | 2015-07-03 | 2015-10-07 | 百度在线网络技术（北京）有限公司 | Intelligent robot power supply management system based on artificial intelligence and method |
| CN108710077A (en) * | 2018-08-07 | 2018-10-26 | 中科芯集成电路股份有限公司 | A kind of electronic device of test circuit break-make |
| CN108828388A (en) * | 2018-06-15 | 2018-11-16 | 沈阳兴华航空电器有限责任公司 | A kind of multi-core cable switching detection device and method based on Radio Transmission Technology |
| CN112444760A (en) * | 2020-10-30 | 2021-03-05 | 神华铁路装备有限责任公司 | Locomotive electrical appliance insulation detection equipment, method and device and storage medium |
| CN114610662A (en) * | 2022-03-08 | 2022-06-10 | 浪潮云信息技术股份公司 | NCSI (network control information system) time sequence adjusting method and device |
-
2013
- 2013-09-12 CN CN201320567332.9U patent/CN203433073U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103941133A (en) * | 2014-04-29 | 2014-07-23 | 西北工业大学 | Ultra-miniature parallel processor cable testing system and method |
| CN104459407A (en) * | 2014-12-12 | 2015-03-25 | 陕西海泰电子有限责任公司 | Portable cable testing device |
| CN104965438A (en) * | 2015-07-03 | 2015-10-07 | 百度在线网络技术（北京）有限公司 | Intelligent robot power supply management system based on artificial intelligence and method |
| CN108828388A (en) * | 2018-06-15 | 2018-11-16 | 沈阳兴华航空电器有限责任公司 | A kind of multi-core cable switching detection device and method based on Radio Transmission Technology |
| CN108710077A (en) * | 2018-08-07 | 2018-10-26 | 中科芯集成电路股份有限公司 | A kind of electronic device of test circuit break-make |
| CN112444760A (en) * | 2020-10-30 | 2021-03-05 | 神华铁路装备有限责任公司 | Locomotive electrical appliance insulation detection equipment, method and device and storage medium |
| CN112444760B (en) * | 2020-10-30 | 2023-08-22 | 神华铁路装备有限责任公司 | Locomotive electrical insulation detection equipment, method, device and storage medium |
| CN114610662A (en) * | 2022-03-08 | 2022-06-10 | 浪潮云信息技术股份公司 | NCSI (network control information system) time sequence adjusting method and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140212 |
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| CX01 | Expiry of patent term |