Single board test platform for transponder information receiving unit

Abstract

The invention relates to a single-board test platform for a transponder information receiving unit, and the platform comprises a test tool which is used for fixing a to-be-tested board and leading out a measurement signal, a power supply which is used for supplying power to the to-be-tested board, a signal generator which is used for applying a test signal to the to-be-tested board, and all measurement instruments. The industrial personal computer is respectively connected with the signal generator and each measuring instrument; the testing jig comprises a probe plate and a fixing plate used for fixing the to-be-tested plate, the probe plate is provided with a plurality of probes, and the positions of the probes meet the condition that after the probe plate and the fixing plate are closed, all measuring points on the to-be-tested plate are connected with the probes in a one-to-one correspondence mode; measurement signals of all measurement points on the board to be tested are led out through the probes and then are input to all measurement instruments for single board testing. Compared with the prior art, the method has the advantages of high test accuracy and high efficiency.

Description

Technical Field

[0001] The present invention relates to the field of transponder hardware testing, and particularly to a single-board test platform for a transponder information receiving unit. Background Art

[0002] During the single-board testing process of the transponder information receiving unit, it is necessary to power on the board to be tested (DC24V), apply input signals (sinusoidal waves of 27 MHz and 4 MHz), and measure the resistance, output voltage, output signals (frequency, amplitude, loss, differential signal second-order intermodulation suppression), crystal oscillator output waveform, and input signal amplitude of the device pin level jump of the board to be tested.

[0003] The prior art uses an adjustable power supply to power on the board to be tested, a signal generator to apply input signals, and a multimeter, oscilloscope, power meter, and vector network analyzer to measure relevant indicators. Some test points of the board to be tested are not conventional connectors, and the use of ordinary test clips, test leads, probes, etc. results in unstable contact; there are many measured points and they are scattered, and using the instrument to directly measure item by item has low test efficiency. Summary of the Invention

[0004] The purpose of the present invention is to provide a single-board test platform for a transponder information receiving unit with high test accuracy and high efficiency to overcome the above-mentioned defects existing in the prior art.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] The present invention provides a single-board test platform for a transponder information receiving unit, which includes a test fixture for fixing the board to be tested and leading out measurement signals, a power supply for powering the board to be tested, a signal generator for applying test signals to the board to be tested, various measuring instruments, and an industrial control computer respectively connected to the signal generator and various measuring instruments;

[0007] The test fixture includes a probe board and a fixing board for fixing the board to be tested. A plurality of probes are arranged on the probe board, and the probe positions are set to satisfy that after closing the probe board and the fixing board, each measurement point on the board to be tested is correspondingly connected to the probes one by one; the measurement signals of each measurement point on the board to be tested are led out through the probes and input into various measuring instruments for single-board testing.

[0008] Preferably, the probes correspond one by one to the measurement points corresponding to the ICT test holes on the board to be tested.

[0009] Preferably, a sinking part for placing the board to be tested is arranged inside the fixing board, so that after closing the probe board and the fixing board, only the probes on the probe board are in contact with the measurement points of the board to be tested.

[0010] Preferably, the probe board and the fixing board are movably connected at a single end through a rotating shaft.

[0011] Preferably, an external interface is provided on the test fixture. After the detection signals of the measurement points are led out of the probe through a cable, they are aggregated to the external interface, and the external interface is connected to each measuring instrument through a cable.

[0012] Preferably, the test platform further includes an adapter board for converting measurement signals. A signal switching circuit is provided on the adapter board. The measurement signals led out by the probe are connected to the input end of the signal switching circuit, and the output ends of the signal switching circuit are respectively connected to each measuring instrument.

[0013] Preferably, the measuring instruments include a voltage measurement module, a resistance measurement module, an oscilloscope, a power meter, and a vector network analyzer.

[0014] Preferably, the oscilloscope is further connected to a display.

[0015] Preferably, the industrial control computer communicates with each measuring instrument through RS485.

[0016] Preferably, the industrial control computer further includes: reading the measurement data of each measuring instrument, performing data comparison, judging whether the current board to be tested is qualified, and automatically generating a test report.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1) In the existing test method, a test pen is used to contact the test points one by one. Most of the test points are device pins or connector pin ends. It is not easy to stably place the test pen, and there is a risk of poor contact, requiring the operator to have a steady hand and be precise; while in the present invention, a test fixture is used to connect with the board to be tested, and the probes on the test fixture are directly connected to all test points, with reliable connection and easy operation, improving the test efficiency and accuracy.

[0019] 2) In the existing test method, the operator manually operates the keys and knobs on signal generators, oscilloscopes, vector network analyzers, etc. to control the instruments. The operation is complex and requires high requirements for the operator; while in the present invention, the industrial control computer automatically controls the signal generator, oscilloscope, and vector network analyzer, reducing the dependence on the operator's operation, lowering the test difficulty, and improving the test efficiency and accuracy.

[0020] 3) The original test method uses a multimeter to measure the resistance and voltage information of the test points, and there are many test points, which requires a long time to measure point by point; while in the present invention, the industrial control computer controls the resistance measurement module and the voltage measurement module to directly measure all test points at one time, improving the test efficiency.

[0021] 4) In the original test method, the operator needs to record the test data during the test, judge whether the test data meets the product technical requirements, and fill in the test report. It takes about 5 hours for a set of boards. In contrast, the present invention uses an industrial control computer to automatically record the test data, judge the test results, and automatically generate the test report. It takes about 1.5 hours for a set of boards, significantly improving the test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic structural diagram of the single-board test platform of the present invention;

[0023] Figure 2 It is a schematic structural diagram of the test fixture of the present invention;

[0024] Reference numerals: 1 - cabinet; 2 - signal generator; 3 - power meter; 4 - vector network analyzer; 5 - oscilloscope; 6 - adapter board; 7 - test fixture, 71 - probe board, 711 - probe, 72 - external interface; 8 - industrial control computer; 9 - power supply; 10 - voltage measurement module; 11 - resistance measurement module; 12 - toolbox; 13 - display; 14 - mouse; 15 - keyboard; 16 - board under test. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0026] Embodiment

[0027] As Figure 1 and Figure 2 shown, this embodiment provides a single-board test platform for a transponder information receiving unit, which is placed entirely in the cabinet 1. The test platform includes a test fixture 7 for fixing the board under test 16 and leading out measurement signals, a power supply 9 for supplying power to the board under test 16, a signal generator 2 for applying test signals to the board under test 16, various measuring instruments, and an industrial control computer 8 respectively connected to the signal generator 2 and various measuring instruments;

[0028] Among them, the test fixture 7 includes a probe board 71 and a fixing plate 73 for fixing the board under test 16. A number of probes 711 are arranged on the probe board 71. The positions of the probes 711 are arranged such that after the probe board 71 and the fixing plate 73 are closed, each measurement point (ICT test hole) on the board under test 16 is connected to the probe 711 one by one; the measurement signals of each measurement point on the board under test 16 are led out through the probe 711 and input to various measuring instruments for single-board testing.

[0029] Next, a detailed introduction to the single-board test platform of this embodiment will be given.

[0030] The test fixture 7 in this embodiment is customized according to the board under test 16. The board under test is fixed using the mounting holes of the board under test, the board under test is positioned using the ICT test holes of the board under test, and the test points of the board under test are connected using probes.

[0031] The probe board 71 and the fixing board 73 in the test fixture 7 are movably connected at one end through a rotating shaft. A sunken part for placing the board under test 16 is provided inside the fixing board 73, such that after closing the probe board 71 and the fixing board 73, only the probes 711 on the probe board 71 are in contact with the measurement points of the board under test 16.

[0032] Furthermore, an external interface 72 is provided on the test fixture 7. After the detection signals of the measurement points are led out from the probes 711 through cables, they are aggregated to the external interface 72, and the external interface 72 is connected to each measuring instrument through a cable.

[0033] Furthermore, the test platform further includes an adapter board 6 for converting measurement signals. A signal switching circuit is provided on the adapter board 6. The measurement signals led out from the probes 711 are connected to the input end of the signal switching circuit, and the output ends of the signal switching circuit are respectively connected to each measuring instrument.

[0034] Furthermore, the measuring instruments in this embodiment include a voltage measurement module 10, a resistance measurement module 11, an oscilloscope 5, a power meter 3, and a vector network analyzer 4.

[0035] In addition, auxiliary devices such as a display 13, a mouse 14, and a keyboard 15 are also provided inside the test platform. The display 13 is connected to the oscilloscope 5, and the mouse 14 and the keyboard 15 are respectively connected to the display 13.

[0036] In this embodiment, the signal generator 2, the resistance measurement module 11, the voltage measurement module 10, the oscilloscope 5, and the vector network analyzer 4 perform RS485 communication with the industrial control computer 8.

[0037] In this embodiment, existing upper computer software is installed in the industrial control computer 8, which can control the signal generator 2, read the data on the resistance measurement module 11, the voltage measurement module 10, the oscilloscope 5, and the vector network analyzer 4, determine whether it is qualified, and automatically generate a test report.

[0038] It should be noted that the position settings of the various components in this embodiment are only one case of being placed in the cabinet 1, and the positions of the components are not restricted. Figure 1 The position settings of the various components in this embodiment are only one case of being placed in the cabinet 1, and the positions of the components are not restricted.

[0039] Compared with the test method which is cumbersome and complex to operate, has high requirements for operators, and has the risk that incorrect operations or unstable contact of test probes may cause the test data to be inconsistent with the actual situation; the present invention ensures reliable contact of test probes by making a test fixture to connect test points, and automatically controls instruments and meters by using an industrial control computer, reducing the dependence on operators and improving the accuracy of test results. The existing manual test method takes about 5 hours to test a set of boards, while using the test strip designed by the present invention to test a set of boards takes about 1.5 hours, significantly reducing the test time and improving the test efficiency.

[0040] As described above, the above is only a specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A single-board test platform for a transponder information receiving unit, characterized in that, the test platform includes a test fixture (7) for fixing the board under test (16) and leading out measurement signals, a power supply (9) for powering the board under test (16), a signal generator (2) for applying test signals to the board under test (16), various measuring instruments, and an industrial control computer (8) respectively connected to the signal generator (2) and various measuring instruments; the test fixture (7) includes a probe board (71) and a fixing board (73) for fixing the board under test (16). A number of probes (711) are arranged on the probe board (71). The positions of the probes (711) are set such that after closing the probe board (71) and the fixing board (73), each measurement point on the board under test (16) is connected to the probe (711) in one-to-one correspondence; the measurement signals of each measurement point on the board under test (16) are led out through the probes (711) and input to various measuring instruments for single-board testing.

2. The single-board test platform for a transponder information receiving unit according to claim 1, characterized in that, the probes (711) correspond to the measurement points corresponding to the ICT test holes in the board under test (16) one by one.

3. The single-board test platform for a transponder information receiving unit according to claim 1, characterized in that, a sinking part for placing the board under test (16) is provided inside the fixing board (73), such that after closing the probe board (71) and the fixing board (73), only the probes (711) on the probe board (71) are in contact with the measurement points of the board under test (16).

4. The single-board test platform for a transponder information receiving unit according to claim 1, characterized in that, the probe board (71) and the fixing board (73) are movably connected at a single end through a rotating shaft.

5. The single-board test platform for a transponder information receiving unit according to claim 1, characterized in that, an external interface (72) is provided on the test fixture (7). After the detection signals of the measurement points are led out of the probes (711) through cables, they are aggregated to the external interface (72), and are connected to various measuring instruments through cables by the external interface (72).

6. The single-board test platform for a transponder information receiving unit according to claim 1, characterized in that, the test platform further includes an adapter board (6) for converting measurement signals. A signal switching circuit is provided on the adapter board (6). The measurement signals led out by the probes (711) are connected to the input end of the signal switching circuit, and the output end of the signal switching circuit is respectively connected to various measuring instruments.

7. The single-board test platform for a transponder information receiving unit according to claim 1, characterized in that, the measuring instruments include a voltage measurement module (10), a resistance measurement module (11), an oscilloscope (5), a power meter (3) and a vector network analyzer (4).

8. A single-board test platform for a transponder information receiving unit according to claim 7, characterized in that, the oscilloscope (5) is further connected to a display (13).

9. A single-board test platform for a transponder information receiving unit according to claim 1, characterized in that, the industrial control computer (8) communicates with each measuring instrument through RS485.

10. A single-board test platform for a transponder information receiving unit according to claim 1, characterized in that, the industrial control computer (8) further includes: reading the measurement data of each measuring instrument, performing data comparison, determining whether the current board under test (16) is qualified, and automatically generating a test report.

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