CN114047427A - Test system of circuit board card - Google Patents
Test system of circuit board card Download PDFInfo
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- CN114047427A CN114047427A CN202111262252.8A CN202111262252A CN114047427A CN 114047427 A CN114047427 A CN 114047427A CN 202111262252 A CN202111262252 A CN 202111262252A CN 114047427 A CN114047427 A CN 114047427A
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- 238000012360 testing method Methods 0.000 title claims abstract description 91
- 230000005284 excitation Effects 0.000 claims abstract description 26
- 239000000306 component Substances 0.000 description 3
- 238000012795 verification Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000013112 stability test Methods 0.000 description 1
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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
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
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- General Physics & Mathematics (AREA)
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Abstract
The invention discloses a test system of a circuit board card, wherein the test system of the circuit board card is provided with a control unit, a switching multiplexing unit and a signal generating unit, wherein the control unit sends a test instruction to the signal generating unit through the switching multiplexing unit, and the signal generating unit generates an excitation signal based on the test instruction and sends the excitation signal to the circuit board card to be tested; the control unit receives the response signal generated by the circuit board card to be tested based on the excitation signal through the switching multiplexing unit, so that the automatic test of the circuit board card is realized, the test labor cost is saved, the test stability and accuracy are improved, and the test efficiency is improved.
Description
Technical Field
The invention relates to the technical field of testing, in particular to a test system of a circuit board card.
Background
With the continuous development of nuclear power technology, nuclear power is developing towards a direction of being safer and more reliable, more advanced in technology and more complete in process, an FPGA (Field Programmable Gate Array) circuit board card is a core component forming a nuclear power plant safety level instrument control system, only products which are verified and confirmed through testing can be allowed to be applied to a nuclear power plant, the problem that how to ensure that the function and the quality of the FPGA circuit board card meet design requirements is needed to be solved by the nuclear power plant at present is solved urgently, the verification and the confirmation of the FPGA circuit board card are extremely lacked, the testing and the verification of the FPGA circuit board card usually adopt a traditional manual testing mode, namely, a tester inputs testing signals manually according to testing rules and compares testing data manually, but because the FPGA circuit board card needs a large number of testing items and complex testing points, the manual testing and the verification work needs to consume a large amount of time and manpower, thereby resulting in a low test efficiency and error susceptibility.
Disclosure of Invention
The invention aims to overcome the defects of low test efficiency and high possibility of errors of the FPGA circuit board card in the prior art, and provides a circuit board card test system.
The invention solves the technical problems through the following technical scheme:
the invention provides a test system of a circuit board card, which comprises a control unit, a switching multiplexing unit and a signal generating unit, wherein the control unit is used for controlling the switching multiplexing unit to perform switching on the switching multiplexing unit;
the first end of the switching multiplexing unit is connected with the control unit, the second end of the switching multiplexing unit is connected with the signal generating unit, and the third end of the switching multiplexing unit is connected with a circuit board to be tested;
the control unit sends a test instruction to the signal generating unit through the switching multiplexing unit, the signal generating unit generates an excitation signal based on the test instruction, and the excitation signal is sent to the circuit board card to be tested; and the control unit receives a response signal generated by the circuit board card to be tested based on the excitation signal through the switching multiplexing unit.
Preferably, the switching multiplexing unit is a relay, the first end is a coil end, the second end is a normally open node, and the third end is a normally closed node.
Preferably, the test system further comprises an expanding clamp for fixing the circuit board card to be tested.
Preferably, the excitation signal is an electrical pulse signal.
Preferably, the excitation signal is an analog signal.
Preferably, the analog signal comprises at least one of: voltage signals, current signals, thermocouple signals, and thermal resistance signals.
Preferably, the test system further includes a signal acquisition unit, configured to acquire a response signal generated by the circuit board card to be tested based on the analog signal, and send the response signal to the control unit through the switching multiplexing unit.
Preferably, the signal acquisition unit is a multimeter.
Preferably, the test system further comprises a power supply unit for supplying electric energy to the circuit board card to be tested, the control unit, the switching multiplexing unit and the signal generating unit.
Preferably, the test system further includes a cabinet, and the control unit, the switching multiplexing unit, and the signal generating unit are all disposed in the cabinet.
The positive progress effects of the invention are as follows: the circuit board card testing device is provided with a control unit, a switching multiplexing unit and a signal generating unit, wherein the control unit sends a test instruction to the signal generating unit through the switching multiplexing unit, the signal generating unit generates an excitation signal based on the test instruction, and the excitation signal is sent to a circuit board card to be tested; the control unit receives the response signal generated by the circuit board card to be tested based on the excitation signal through the switching multiplexing unit, so that the automatic test of the circuit board card is realized, the test labor cost is saved, the test stability and accuracy are improved, and the test efficiency is improved.
Drawings
Fig. 1 is a schematic block diagram of a test system for a circuit board card according to embodiment 1 of the present invention.
Fig. 2 is a schematic connection diagram of a test system of a circuit board card according to embodiment 1 of the present invention.
Detailed Description
The invention is further illustrated by the following examples, which are not intended to limit the scope of the invention.
Example 1
The embodiment provides a test system of a circuit board card, which is used for performing related tests on the circuit board card, wherein the circuit board card to be tested comprises a substrate and a circuit laid on the substrate, and the test system of the embodiment has correspondingly different test items according to different types of the circuit board cards to be tested; taking a mobile phone circuit board as an example, the test item may be a communication stability test, and taking an FPGA circuit board of a nuclear power station safety level instrument control system as an example, the test item may be a safety function test, so that the test system of the embodiment does not limit the test purpose; as shown in fig. 1 and 2, the test system of the present embodiment includes a control unit 1, a switching multiplexing unit 2, and a signal generating unit 3.
In this embodiment, the first end of the switching multiplexing unit 2 is connected to the control unit 1, the second end is connected to the signal generating unit 3, and the third end is connected to the circuit board card 4 to be tested.
The control unit 1 sends a test instruction to the signal generating unit 3 through the switching multiplexing unit 2, the signal generating unit 3 generates an excitation signal based on the test instruction, and the excitation signal is sent to the circuit board card 4 to be tested; the control unit 1 receives a response signal generated by the circuit board card 4 to be tested based on the excitation signal through the switching multiplexing unit 2.
In practical application, the control unit 1 can be an upper computer which sends a test instruction through the switching multiplexing unit 2, the signal generating unit 3 generates an excitation signal based on the test instruction, and the excitation signal is sent to the circuit board card 4 to be tested; the upper computer receives a response signal generated by the circuit board card 4 to be tested based on the excitation signal through the switching multiplexing unit 2, wherein the upper computer also stores a test case which is configured in advance, and different test cases correspondingly generate corresponding test instructions.
In a specific embodiment, the switching multiplexing unit 2 is a relay, so that excitation signal multiplexing and response signal multiplexing are realized through the relay, a first end of the switching multiplexing unit 2 is a coil end of the relay, a second end of the switching multiplexing unit 2 is a normally open node of the relay, and a third end of the switching multiplexing unit 2 is a normally closed node of the relay. Optionally, the number of the relays may be one or multiple, the multiple relays form a relay matrix, accordingly, each relay in the relay matrix corresponds to one signal generation unit 3, and by means of flexible configuration of the switching multiplexing unit, transmission and data acquisition of multiple paths of test signals can be realized only by resetting on the control unit without changing any hardware, that is, the test signals can be increased or decreased according to different test requirements, so that the test system has great expandability.
In an optional embodiment, the excitation signal generated by the signal generating unit 3 based on the test instruction may be an electric pulse signal, at this time, the signal generating unit 3 is a signal generator, wherein the signal generator may select an output voltage, a frequency and a duty ratio according to a design requirement of the circuit board card to be tested; in another alternative embodiment, the excitation signal generated by the signal generating unit 3 based on the test instruction may be an analog signal, in this case, the signal generating unit 3 is a signal source, where the analog signal includes at least one of the following: voltage signals, current signals, thermocouple signals, and thermal resistance signals.
In specific implementation, the test system may further include an expanding clamp 5 for fixing the circuit board card 4 to be tested so as to maintain the position stability of the circuit board card 4 to be tested in the test process; the structure of the expanding clamp 5 can be various, and the technicians in the field can select the expanding clamp according to the type or the shape of the circuit board card; for example, for a small circuit board card, the expanding clamp 5 may be an insulating clamp, which clamps one side of the circuit board card 4 to be tested to fix the circuit board card 4 to be tested; for large circuit board cards, the expansion clamp 5 can be a pressing clamp, a pressing piece is arranged on the bracket, and the pressing piece presses the circuit board card 4 to be tested when the circuit board card is placed on the bracket so as to fix the circuit board card 4 to be tested. In addition, the expanding clamp 5 can be connected with the connector on the circuit board card 4 to be tested so as to confirm whether the function of the connector of the circuit board card 4 to be tested is normal.
In a preferred embodiment, the test system further includes a signal acquisition unit 6, configured to acquire a response signal generated by the circuit board card 4 to be tested based on the analog signal, and send the response signal to the control unit 1 through the switching multiplexing unit 2, where the signal acquisition unit 6 may be a multimeter, and the multimeter is capable of performing measurement of voltage, current, resistance, temperature, inductance, capacitance, and frequency/cycle and a diode, so that a variety of response signals can be provided for the test system, and the test accuracy is improved.
In an optional embodiment, the test system further includes a power supply unit 7 for supplying power to the circuit board card 4 to be tested, the control unit 1, the switching multiplexing unit 2, and the signal generating unit 3. In a specific implementation, the power supply unit 7 may include an operating power supply and a signal power supply; the working Power Supply comprises a Power distribution component and a UPS component (Uninterruptible Power Supply). The power distribution component provides external commercial power distribution to each single unit; the signal power supply comprises an alternating current power supply and a direct current power supply, provides alternating current and direct current signal power supplies for the circuit board card to be tested, and can provide signals for a plurality of measuring points by matching with the switching multiplexing unit 2.
The test system can also comprise a cabinet 8, the control unit 1, the switching multiplexing unit 2 and the signal generating unit 3 are all arranged in the cabinet, and meanwhile, other module units can also be arranged in the cabinet 8, so that the test system can construct a modular and standardized structure.
The test system of the circuit board card of the embodiment is provided with the control unit, the switching multiplexing unit and the signal generating unit, wherein the control unit sends a test instruction to the signal generating unit through the switching multiplexing unit, and the signal generating unit generates an excitation signal based on the test instruction and sends the excitation signal to the circuit board card to be tested; the control unit receives the response signal generated by the circuit board card to be tested based on the excitation signal through the switching multiplexing unit, so that the automatic test of the circuit board card is realized, the test labor cost is saved, the test stability and accuracy are improved, and the test efficiency is improved.
While specific embodiments of the invention have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the invention, and these changes and modifications are within the scope of the invention.
Claims (10)
1. A test system of a circuit board card is characterized by comprising a control unit, a switching multiplexing unit and a signal generating unit;
the first end of the switching multiplexing unit is connected with the control unit, the second end of the switching multiplexing unit is connected with the signal generating unit, and the third end of the switching multiplexing unit is connected with a circuit board to be tested;
the control unit sends a test instruction to the signal generating unit through the switching multiplexing unit, the signal generating unit generates an excitation signal based on the test instruction, and the excitation signal is sent to the circuit board card to be tested; and the control unit receives a response signal generated by the circuit board card to be tested based on the excitation signal through the switching multiplexing unit.
2. The system for testing a circuit board of claim 1, wherein the switching multiplexing unit is a relay, the first terminal is a coil terminal, the second terminal is a normally open node, and the third terminal is a normally closed node.
3. The system for testing circuit boards of claim 1 further comprising an expansion fixture for holding the circuit board to be tested.
4. The system for testing circuit boards of claim 1 wherein the stimulus signal is an electrical pulse signal.
5. The system for testing a circuit board of claim 1, wherein the stimulus signal is an analog signal.
6. The circuit board test system of claim 5, wherein the analog signal comprises at least one of: voltage signals, current signals, thermocouple signals, and thermal resistance signals.
7. The system for testing a circuit board card of claim 6, further comprising a signal acquisition unit configured to acquire a response signal generated by the circuit board card to be tested based on the analog signal and send the response signal to the control unit through the switching multiplexing unit.
8. The system for testing a circuit board of claim 7, wherein the signal acquisition unit is a multimeter.
9. The system for testing circuit boards of claim 1 further comprising a power supply unit for providing power to the circuit board to be tested, the control unit, the switching multiplexing unit, and the signal generating unit.
10. The system for testing circuit boards of any of claims 1-9 wherein the test system further comprises a cabinet, the control unit, the switch multiplexing unit, and the signal generating unit being disposed in the cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111262252.8A CN114047427A (en) | 2021-10-28 | 2021-10-28 | Test system of circuit board card |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111262252.8A CN114047427A (en) | 2021-10-28 | 2021-10-28 | Test system of circuit board card |
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| Publication Number | Publication Date |
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| CN114047427A true CN114047427A (en) | 2022-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111262252.8A Pending CN114047427A (en) | 2021-10-28 | 2021-10-28 | Test system of circuit board card |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103033738A (en) * | 2012-12-20 | 2013-04-10 | 全天自动化能源科技（东莞）有限公司 | Automatic test system for circuit board |
| CN107024652A (en) * | 2017-05-10 | 2017-08-08 | 中车大连电力牵引研发中心有限公司 | Board level testing system |
| CN209102858U (en) * | 2018-09-27 | 2019-07-12 | 国核自仪系统工程有限公司 | Nuclear power station security level I&C system board automatic testing equipment |
| CN211826336U (en) * | 2019-11-17 | 2020-10-30 | 深圳市嘉立创科技发展有限公司 | Automatic PCB detection platform system |
| CN112198419A (en) * | 2020-10-23 | 2021-01-08 | 新晃顺美威科技有限公司 | Automatic test system for PCB |
| JP2021071460A (en) * | 2019-11-01 | 2021-05-06 | 正▲うえ▼精密工業股▲ふん▼有限公司 | Automatic circuit board testing system and testing method thereof |
-
2021
- 2021-10-28 CN CN202111262252.8A patent/CN114047427A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103033738A (en) * | 2012-12-20 | 2013-04-10 | 全天自动化能源科技（东莞）有限公司 | Automatic test system for circuit board |
| CN107024652A (en) * | 2017-05-10 | 2017-08-08 | 中车大连电力牵引研发中心有限公司 | Board level testing system |
| CN209102858U (en) * | 2018-09-27 | 2019-07-12 | 国核自仪系统工程有限公司 | Nuclear power station security level I&C system board automatic testing equipment |
| JP2021071460A (en) * | 2019-11-01 | 2021-05-06 | 正▲うえ▼精密工業股▲ふん▼有限公司 | Automatic circuit board testing system and testing method thereof |
| CN211826336U (en) * | 2019-11-17 | 2020-10-30 | 深圳市嘉立创科技发展有限公司 | Automatic PCB detection platform system |
| CN112198419A (en) * | 2020-10-23 | 2021-01-08 | 新晃顺美威科技有限公司 | Automatic test system for PCB |
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