CN111913088B - Flat cable voltage-resistant test system - Google Patents
Flat cable voltage-resistant test system Download PDFInfo
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- CN111913088B CN111913088B CN202010989973.8A CN202010989973A CN111913088B CN 111913088 B CN111913088 B CN 111913088B CN 202010989973 A CN202010989973 A CN 202010989973A CN 111913088 B CN111913088 B CN 111913088B
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- relay array
- array module
- module
- relays
- flat cable
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1263—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation
- G01R31/1272—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of solid or fluid materials, e.g. insulation films, bulk material; of semiconductors or LV electronic components or parts; of cable, line or wire insulation of cable, line or wire insulation, e.g. using partial discharge measurements
Abstract
The invention provides a flat cable voltage-withstanding test system.A controller is connected with a relay array module through a digital-to-analog converter, a power amplifier module and the relay array module in sequence and is used for sending a voltage control instruction and a relay gating signal; the controller is further connected with the relay array module through the analog-to-digital converter, the instrument amplifier, the resistance sampling module and the relay array module in sequence and used for receiving voltage signals generated by leakage current through the sampling resistor. The flat cable voltage-withstanding test system provided by the invention is a voltage-withstanding test system with high test efficiency and strong reliability.
Description
Technical Field
The invention relates to the electronic circuit technology, in particular to a flat cable voltage resistance test system.
Background
The rapid development of industrial technology makes people have higher and higher requirements on the connection quality and safety of the electrical connection flat cable, so that most manufacturers urgently need to improve the product testing efficiency and reliability. The general flat cable voltage-resistant test adopts a voltage-resistant tester to test, the operation is complex, the integration level on a production line is not high, and the inspection efficiency is low.
Disclosure of Invention
The invention provides a voltage-withstanding test system with high test efficiency and strong reliability.
The specific plan scheme is as follows:
a flat cable voltage resistance test system comprises a controller, a digital-to-analog converter, a power amplifier module, a relay array module, a resistance sampling module, an instrument amplifier and an analog-to-digital converter;
the controller is directly connected with the relay array module and is used for sending a relay gating signal;
the controller is also connected with the relay array module through the digital-to-analog converter, the power amplification module and the relay array module in sequence and is used for sending a voltage control instruction; the controller is also connected with the relay array module through the analog-to-digital converter, the instrument amplifier, the resistance sampling module and the relay array module in sequence and is used for receiving a voltage signal generated by leakage current through the sampling resistor;
the digital-to-analog converter is used for converting the received voltage magnitude instruction to obtain an analog value and transmitting the analog value to the power amplification module;
the power amplification module is used for amplifying the received voltage analog value and transmitting the amplified voltage analog value to the relay array module;
the relay array module is used for switching the core wires in the flat cable under test;
the resistance sampling module is used for converting the current signal into a voltage signal;
the instrument amplifier is used for collecting the voltage drop at two ends of the sampling resistor in the resistor sampling module and transmitting the voltage analog value to the analog-to-digital converter;
the analog-to-digital converter is used for converting the received voltage analog value to obtain a digital value and transmitting the digital value to the controller.
The relay array module comprises three relay array modules, namely a first relay array module, a second relay array module and a third relay array module;
the first relay array module is respectively connected with the power amplification module and the tested flat cable and used for receiving the voltage signal transmitted by the power amplification module and applying the transmitted voltage signal to the test end;
the second relay array module is respectively connected with the resistance sampling module and the tested flat cable and is used for connecting the sampling resistance to a core line where leakage current is located in series;
and the third relay array module is respectively connected with the ground and the measured flat cable and is used for grounding the core wire which is being measured in the measured flat cable.
The first relay array module comprises m relays of the same type, corresponding relays are gated according to a core wire being tested by a tested flat cable, and the relays are single-pole single-throw relays;
the second relay array module comprises m relays of the same type, corresponding relays are gated according to core wires where leakage current exists, and the relays are double-pole double-throw relays;
the third relay array module comprises m relays of the same type, corresponding relays are gated according to the core wire being tested by the tested flat cable, and the relays are single-pole single-throw relays; m is an integer greater than 1;
and the first relay array module and the third relay array module comprise the same relay model, and the second relay array module and the first relay array module and the third relay array module comprise different relay models.
Furthermore, the resistance sampling module comprises n sampling resistors with different resistance values, and n is an integer greater than 1.
The controller is an FPGA.
The flat cable voltage-withstanding test system provided by the invention is a voltage-withstanding test system with high test efficiency and strong reliability.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of a relay array module according to the present invention;
fig. 3 is a connection diagram of the relay array module and the tested flat cable according to the present invention.
Detailed Description
The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
As shown in fig. 1, a flat cable withstand voltage test system includes a controller 1, a digital-to-analog converter 2, a power amplifier module 3, a relay array module 4, a resistance sampling module 5, an instrumentation amplifier 6, and an analog-to-digital converter 7;
the controller 1 is connected with the relay array module 4 through the digital-to-analog converter 2, the power amplifier module 3 and the relay array module in sequence and used for sending a voltage control instruction and a relay gating signal;
the controller 1 is also connected with the relay array module 4 sequentially through an analog-to-digital converter 7, an instrument amplifier 6, a resistance sampling module 5 and used for receiving a voltage signal generated by leakage current through a sampling resistor;
the digital-to-analog converter 2 is used for converting the received voltage magnitude instruction to obtain an analog value and transmitting the analog value to the power amplification module 3;
the power amplification module 3 is used for amplifying the received voltage analog value and transmitting the amplified voltage analog value to the relay array module 4;
the relay array module 4 is used for switching the core wires in the flat cable under test;
the resistance sampling module 5 is used for converting the current signal into a voltage signal;
the instrument amplifier 6 is used for collecting voltage drops at two ends of the precision resistor and transmitting voltage analog signals to the analog-to-digital converter 7;
the analog-to-digital converter 7 is configured to convert the received voltage analog value to obtain a digital value, and transmit the digital value to the controller 1.
As shown in fig. 2, the relay array module 4 includes three relay array modules, which are a first relay array module a, a second relay array module B, and a third relay array module C;
the first relay array module A is respectively connected with the power amplifier module 3 and the tested flat cable, and is used for receiving the voltage signal transmitted by the power amplifier module 3 and applying the transmitted voltage signal to the test end;
the second relay array module B is respectively connected with the resistance sampling module 5 and the tested flat cable and is used for connecting the sampling resistance to a core line where leakage current is located in series;
and the third relay array module C is respectively connected with the ground and the measured flat cable and is used for grounding the core wire which is being measured in the measured flat cable.
The first relay array module A comprises m relays of the same type, corresponding relays are gated according to a core wire being tested by a tested flat cable, and the relays are single-pole single-throw relays;
the second relay array module B comprises m relays of the same type, corresponding relays are gated according to core wires where leakage current exists, and the relays are double-pole double-throw relays;
the third relay array module C comprises m relays of the same type, corresponding relays are gated according to the core wire being tested by the tested flat cable, and the relays are all single-pole single-throw relays;
m is an integer greater than 1;
the first relay array module A and the third relay array module C comprise the same relay model, and the second relay array module B and the first relay array module A and the third relay array module C comprise different relays.
The resistance sampling module 5 comprises n sampling resistors with different resistance values, wherein n is an integer greater than 1.
The controller 1 is an FPGA.
As shown in fig. 2, the measured bus is connected to the relay array module 4. The first relay array module A is connected with one end of a tested flat cable, and only one relay in the relay array is gated in each test; the third relay array module C is connected with the other end of the tested flat cable, only one relay in the relay array is gated in each test, and the relay gated in the third relay array module C is consistent with the relay gated in the first relay array module A. As shown in fig. 3, if the first relay array module a is turned on by 1, the corresponding third relay array module C is turned on by 9.
The relays in the second relay array module B are respectively connected with two ends of the tested flat cable, only one relay in the relay array is switched on in each test, and the relay that is gated is related to the relay that is gated in the first relay array module A and the third relay array module C, the core wire that the relay that is gated in the first relay array module A and the third relay array module C is connected with should be adjacent with the core wire that the relay that is gated in the second relay array module B is connected with, as shown in fig. 3, if the first relay array module a and the third relay array module C are enabled at 1 and 9 respectively, the number of relays gated by the second relay array module B is only 6, and if the first relay array module a and the third relay array module C are gated by 2 and 10, respectively, the number of relays gated by the second relay array module B is one of 5 and 7.
Claims (3)
1. A flat cable withstand voltage test system is characterized by comprising a controller (1), a digital-to-analog converter (2), a power amplifier module (3), a relay array module (4), a resistance sampling module (5), an instrument amplifier (6) and an analog-to-digital converter (7);
the controller (1) is directly connected with the relay array module (4) and is used for sending a relay gating signal; the controller (1) is an FPGA;
the controller (1) is also connected with the relay array module (4) sequentially through the digital-to-analog converter (2), the power amplifier module (3) and used for sending a voltage control instruction; the controller (1) is also connected with the relay array module (4) sequentially through an analog-to-digital converter (7), an instrument amplifier (6) and a resistance sampling module (5) and is used for receiving a voltage signal generated by leakage current through a sampling resistor;
the digital-to-analog converter (2) is used for converting the received voltage magnitude instruction to obtain an analog value and transmitting the analog value to the power amplification module (3);
the power amplification module (3) is used for amplifying the received voltage analog value and transmitting the amplified voltage analog value to the relay array module (4);
the relay array module (4) is used for switching the core wire under test in the flat cable;
the relay array module (4) comprises three relay array modules which are respectively a first relay array module (A), a second relay array module (B) and a third relay array module (C);
the first relay array module (A) is respectively connected with the power amplification module (3) and the tested flat cable, and is used for receiving the voltage signal transmitted by the power amplification module (3) and applying the transmitted voltage signal to the test end;
the second relay array module (B) is respectively connected with the resistance sampling module (5) and the tested flat cable and is used for connecting the sampling resistance to the core line where the leakage current is located in series;
the third relay array module (C) is respectively connected with the ground and the measured flat cable and is used for grounding the core wire which is measured in the measured flat cable;
the resistance sampling module (5) is used for converting the current signal into a voltage signal;
the instrument amplifier (6) is used for collecting voltage drops at two ends of a sampling resistor in the resistor sampling module (5) and transmitting a voltage analog value to the analog-to-digital converter (7);
the analog-to-digital converter (7) is used for converting the received voltage analog value to obtain a digital value and transmitting the digital value to the controller (1).
2. The flat cable withstand voltage test system according to claim 1, wherein:
the first relay array module (A) comprises m relays of the same type, corresponding relays are gated according to a core wire being tested by a tested flat cable, and the relays are all single-pole single-throw relays;
the second relay array module (B) comprises m relays of the same type, corresponding relays are gated according to core wires where leakage current exists, and the relays are double-pole double-throw relays;
the third relay array module (C) comprises m relays of the same type, corresponding relays are gated according to the core wire being tested by the tested flat cable, and the relays are all single-pole single-throw relays;
m is an integer greater than 1;
the first relay array module (A) and the third relay array module (C) comprise the same relay model, and the second relay array module (B) and the first relay array module (A) and the third relay array module (C) comprise different relays.
3. The flat cable withstand voltage test system according to claim 1, wherein: the resistance sampling module (5) comprises n sampling resistors with different resistance values, wherein n is an integer larger than 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010989973.8A CN111913088B (en) | 2020-09-18 | 2020-09-18 | Flat cable voltage-resistant test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010989973.8A CN111913088B (en) | 2020-09-18 | 2020-09-18 | Flat cable voltage-resistant test system |
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| Publication Number | Publication Date |
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| CN111913088A CN111913088A (en) | 2020-11-10 |
| CN111913088B true CN111913088B (en) | 2021-03-19 |
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| CN202010989973.8A Active CN111913088B (en) | 2020-09-18 | 2020-09-18 | Flat cable voltage-resistant test system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111913088B (en) * | 2020-09-18 | 2021-03-19 | 哈本自动化技术(江苏)有限公司 | Flat cable voltage-resistant test system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0692718A1 (en) * | 1994-07-11 | 1996-01-17 | SIX TAU S.p.A. | A method and a device for testing an electric connector |
| CN101281233A (en) * | 2007-04-05 | 2008-10-08 | 鸿富锦精密工业（深圳）有限公司 | Electric connector test system |
| CN208109987U (en) * | 2018-04-02 | 2018-11-16 | 东莞市韬科电子有限公司 | A kind of wire quality analyzer |
| CN110940898A (en) * | 2019-09-30 | 2020-03-31 | 航天科工防御技术研究试验中心 | Insulation and voltage resistance testing device for electric connector |
| CN111913088A (en) * | 2020-09-18 | 2020-11-10 | 哈本自动化技术(江苏)有限公司 | Flat cable voltage-resistant test system |
-
2020
- 2020-09-18 CN CN202010989973.8A patent/CN111913088B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0692718A1 (en) * | 1994-07-11 | 1996-01-17 | SIX TAU S.p.A. | A method and a device for testing an electric connector |
| CN101281233A (en) * | 2007-04-05 | 2008-10-08 | 鸿富锦精密工业（深圳）有限公司 | Electric connector test system |
| CN208109987U (en) * | 2018-04-02 | 2018-11-16 | 东莞市韬科电子有限公司 | A kind of wire quality analyzer |
| CN110940898A (en) * | 2019-09-30 | 2020-03-31 | 航天科工防御技术研究试验中心 | Insulation and voltage resistance testing device for electric connector |
| CN111913088A (en) * | 2020-09-18 | 2020-11-10 | 哈本自动化技术(江苏)有限公司 | Flat cable voltage-resistant test system |
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