Rectifier electrical performance automatic test system and method

Abstract

The invention discloses an automatic test system and method for the electrical performance of a rectifier, and the system comprises a computer which transmits a collection instruction to a switch unit; a switch control signal is sent to the relay control switch; carrying out qualification judgment on the product according to the test data; the signal source is used for generating a waveform input signal; the relay control switch is used for controlling a relay switch according to the switch control signal; when the relay control switch is turned off, the alternating current interface is communicated with a signal source and provides a power signal and an input signal for the rectifier temperature cycle test bench. The rectifier temperature cycle test board forwards the power supply signal and the input signal to the rectifier product; the rectifier product is used for generating test data according to the power supply signal and the input signal; and the switch unit is used for acquiring test data of the rectifier product through the rectifier temperature cycle test board according to the acquisition instruction and sending the test data to the computer. Automatic test and automatic discrimination of data are realized, and a test record document is generated.

Description

Technical Field

[0001] The invention relates to a rectifier electrical performance automatic testing system and method, belonging to the field of testing multi-channel parameters of a single board or a complete machine. Background Art

[0002] At present, the existing testing method for a large number of rectifiers adopts a technical structure of manually recording the rectifier temperature cycle test bench, signal source, and multimeter, and manually testing single-channel products in sequence. In the environmental screening test process of large-scale rectifier products, multiple products are often tested at the same time. During the test, it is necessary to collect voltage and current data of multiple rectifier products to ensure that the performance of the products in the temperature cycle test is normal. It has always been manually measured with a meter, and then another person records the data in a paper table, which is inefficient.

[0003] First, data recording or input errors often occur; second, the process requires manual judgment of the data range, which is time-consuming and prone to omissions. These two aspects will seriously affect the accuracy of the data. In addition, it is difficult to judge whether a large amount of data is normal, which creates a production bottleneck. A large amount of paper test data cannot be quickly checked and verified, and out-of-tolerance data is often generated, resulting in problem products not being discovered. Summary of the invention

[0004] The technical problem solved by the present invention is: to overcome the deficiencies of the prior art and to provide a rectifier electrical performance automatic testing system and method to achieve automatic testing.

[0005] The technical solution of the present invention is:

[0006] The invention discloses a rectifier electrical performance automatic test system, comprising: a computer, a switch unit, a relay control switch, a rectifier temperature cycle test bench, a signal source, a rectifier product and an AC interface; wherein:

[0007] The computer sends a collection instruction to the switch unit; sends a switch control signal to the relay control switch; and makes a qualification judgment on the product based on the test data;

[0008] A signal source, for generating a waveform input signal;

[0009] The relay control switch controls the relay switch according to the switch control signal; when the relay control switch is closed, the AC interface is connected to the signal source to provide power supply signal and input signal for the rectifier temperature cycle test bench;

[0010] Rectifier temperature cycle test bench, forwarding power supply signal and input signal to rectifier products;

[0011] Rectifier products generate test data based on power supply signals and input signals;

[0012] The switch unit, according to the acquisition instruction, collects the test data of the rectifier product through the rectifier temperature cycle test bench and sends it to the computer.

[0013] Furthermore, in the above system, the switch unit includes a plurality of multiplexers, each of which is connected to a switching cable.

[0014] Furthermore, the above system also includes a first adapter cable and a second adapter cable; the computer sends a collection instruction to the switch unit through the first adapter cable; the computer connects the relay control switch through the second adapter cable to control the switch relay.

[0015] Furthermore, the above system also includes: a transfer cable, a cable connector and a transfer collection cable; a switch unit, which is connected to the rectifier temperature cycle test bench through a transfer cable, a cable connector and a transfer collection cable.

[0016] Furthermore, the above system also includes: a rectifier connecting cable; the rectifier temperature cycle test bench is connected to the rectifier product through the rectifier connecting cable.

[0017] The present invention discloses a method for automatically testing the electrical performance of a rectifier, comprising:

[0018] The computer sends a collection instruction to the switch unit;

[0019] The computer sends a switch control signal to the relay control switch;

[0020] The relay control switch controls the relay switch according to the switch control signal;

[0021] When the relay control switch is turned off, the AC interface is connected to the signal source to provide power signal and input signal for the rectifier temperature cycle test bench;

[0022] The rectifier temperature cycle test bench forwards the power supply signal and input signal to the rectifier product;

[0023] The rectifier product generates test data based on the power signal and input signal;

[0024] The switch unit collects the test data of the rectifier product through the rectifier temperature cycle test bench according to the collection instruction and sends it to the computer;

[0025] The computer determines the product's eligibility based on the test data.

[0026] The beneficial effects of the present invention and the prior art are:

[0027] (1) The present invention can automatically test the rectifier temperature cycle function parameters throughout the entire process;

[0028] (2) The system of the present invention can realize the test of the autonomous switching function between rectification and speed measurement;

[0029] (3) The present invention can automatically determine the correctness of data and provide reminders for out-of-tolerance data;

[0030] (4) The present invention develops its own special software, which is suitable for rectifier temperature cycle test;

[0031] (5) The present invention automatically saves electronic data and automatically interprets a large amount of test data. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a connection block diagram of the system of the present invention. DETAILED DESCRIPTION

[0033] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0034] like Figure 1 As shown, the present invention discloses a rectifier electrical performance automatic test system, comprising: a computer 1, a switch unit 2, a relay control switch 5, a rectifier temperature cycle test bench 7, a signal source 8, a rectifier product 10 and an AC interface 11; wherein,

[0035] Computer 1 sends a collection instruction to switch unit 2; sends a switch control signal to relay control switch 5; and makes a qualification judgment on the product according to the test data;

[0036] A signal source 8, for generating a waveform input signal;

[0037] The relay control switch 5 controls the relay switch according to the switch control signal; when the relay control switch 5 is turned off, the AC interface 11 is connected to the signal source 8 to provide a power signal and an input signal to the rectifier temperature cycle test bench 7;

[0038] The rectifier temperature cycle test bench 7 forwards the power supply signal and the input signal to the rectifier product 10;

[0039] The rectifier product 10 generates test data according to the power supply signal and the input signal;

[0040] The switch unit 2 collects the test data of the rectifier product 10 through the rectifier temperature cycle test bench 7 according to the collection instruction, and sends it to the computer 1.

[0041] Preferably, the switch unit 2 includes a plurality of multiplexers, each of which is connected to a switching cable 3 .

[0042] Preferably, it also includes a first adapter cable 6 and a second adapter cable 12; the computer 1 sends a collection instruction to the switch unit 2 through the first adapter cable 6; the computer 1 connects the relay control switch 5 through the second adapter cable 12 to control the switch relay.

[0043] Preferably, it also includes: a transfer cable 3, a cable connector 4 and a transfer collection cable 13; the switch unit 2 is connected to the rectifier temperature cycle test bench 7 through the transfer cable 3, the cable connector 4 and the transfer collection cable 13.

[0044] Preferably, it also includes: a rectifier connecting cable 9; and a rectifier temperature cycle test bench 7 connected to the rectifier product 10 via the rectifier connecting cable 9.

[0045] The present invention discloses a method for automatically testing the electrical performance of a rectifier, comprising:

[0046] Computer 1 sends a collection instruction to switch unit 2;

[0047] The computer 1 sends a switch control signal to the relay control switch 5;

[0048] The relay control switch 5 controls the relay switch according to the switch control signal;

[0049] When the relay control switch 5 is turned off, the AC interface 11 is connected to the signal source 8 to provide a power signal and an input signal to the rectifier temperature cycle test bench 7;

[0050] The rectifier temperature cycle test bench 7 forwards the power supply signal and the input signal to the rectifier product 10;

[0051] The rectifier product 10 generates test data according to the power supply signal and the input signal;

[0052] The switch unit 2 collects the test data of the rectifier product 10 through the rectifier temperature cycle test bench 7 according to the collection instruction, and sends it to the computer 1;

[0053] Computer 1 determines the quality of the product based on the test data.

[0054] Example

[0055] This embodiment can realize a rectifier electrical performance automatic testing system, data display, data interpretation, and automatic data identification to generate data record documents.

[0056] The technical solution of the present invention is:

[0057] The present invention aims at the low test efficiency of rectifier products during temperature cycle test, so the present invention automatically tests the products, automatically reads the data, and automatically saves the rectifier data.

[0058] In view of the above two points, the present invention proposes a rectifier electrical performance automatic testing system, which is characterized by comprising: a computer 1, a 34970A switch unit 2, a 12-way adapter cable 3, a cable connector 4, a 5-way relay control switch 5, an RS232 adapter cable 6, a rectifier temperature cycle test bench 7, a signal source 8, an 18-way rectifier connecting cable 9, a rectifier product 10, a 220V AC interface 11, an RS485 adapter cable 12, and a 12-way acquisition cable 13.

[0059] Through the lower computer algorithm, the 5-way relay control switch 5 is controlled to ensure that when one way is turned on, the other ways are turned off at the same time, ensuring that there is only one way to collect the signal. The input switch algorithm of the AC signal controls the input and output of the AC signal, provides signal input to the rectifier, and ensures the accuracy of the signal.

[0060] Computer 1 sends a collection instruction to 34970A switch unit 2 through RS232 adapter cable 6, so that 12-way multiplexers are closed in sequence, 12-way adapter cable 3 is connected to cable connector 4, and then 12-way collection cable 13 is transferred and finally connected to rectifier temperature cycle test bench 7. Rectifier temperature cycle test bench 7 is connected to rectifier product 10 through 18-way rectifier connecting cable 9 to power or test the product.

[0061] The computer 1 is controlled by a self-developed software program to connect the 5-way relay control switch 5 through the RS485 adapter cable 12 to control the switch relay. The relay control switch 5 controls the 220V AC power interface 11 and the signal of the signal source 8 to supply the rectifier temperature cycle test bench 7, thereby controlling the power-on and signal testing of the rectifier product.

[0062] The test data of the rectifier product 10 is collected through the 34970A switch unit 2, 6 speed measurement signals, 6 rectification signals, and the signals are transmitted back to the computer 1. The computer 1 interprets the test data to determine whether the data is qualified and whether the product is normal.

[0063] The functions and beneficial effects of the present invention are as follows:

[0064] 1. By using the RS232 adapter cable 6 and the RS485 adapter cable 125-way relay control switch 5, the input signal of the rectifier temperature cycle test bench is controlled to change the previous manual control switch into an automatic control switch.

[0065] 2. Write the upper computer control program through the computer and configure the serial port. The RS232 adapter cable 6 and the RS485 adapter cable 12 are responsible for sending the acquisition command to the 34970A switch unit 2. First, turn on the 8-channel waveform signal of the signal source to perform a speed test. Test and collect the speed of channels 1 to 6 to determine whether the values ​​meet the technical requirements. Then display them. After the 6-channel speed test is completed, group storage is performed, and a large amount of data is automatically sorted to ensure data validity.

[0066] 3. The temperature cycle test bench 7 of all rectifiers automatically collects rectification test data, automatically switches the signal source 8 waveform signal and the 220V AC interface 11, automatically completes the speed measurement and rectification tests, and reads back the measured data for display, interpretation, and storage. If the data is out of tolerance, a pop-up window will be displayed to remind and stop the test.

[0067] 4. The system automatically saves data, generates an electronic data table, saves the product number, test cycle, tester, and detailed test time, and automatically determines the validity of the data to ensure that the test data is true, reliable, and effective.

[0068] Parts of the present invention that are not described in detail belong to common knowledge among those skilled in the art.

[0069] Although the content of the present invention has been described in detail through the above preferred embodiments, it should be appreciated that the above description should not be considered as a limitation of the present invention. After reading the above content, it will be apparent to those skilled in the art that various modifications and substitutions of the present invention will occur. Therefore, the protection scope of the present invention should be limited by the appended claims.

[0070] The contents not described in detail in the specification of the present invention belong to the common knowledge of the professionals in this field.

Claims

1. A rectifier electrical performance automatic testing system, characterized in that: include: A computer (1), a switch unit (2), a relay control switch (5), a rectifier temperature cycle test bench (7), a signal source (8), a rectifier product (10) and an AC power interface (11); wherein: The computer (1) sends a collection instruction to the switch unit (2); sends a switch control signal to the relay control switch (5); and makes a qualification judgment on the product according to the test data; A signal source (8) for generating a waveform input signal; The relay control switch (5) controls the relay switch according to the switch control signal; when the relay control switch (5) is turned off, the AC interface (11) is connected to the signal source (8) to provide a power signal and an input signal to the rectifier temperature cycle test bench (7); A rectifier temperature cycle test bench (7) forwards the power supply signal and the input signal to the rectifier product (10); The rectifier product (10) generates test data according to the power supply signal and the input signal; The switch unit (2) collects test data of the rectifier product (10) according to the collection instruction through the rectifier temperature cycle test bench (7) and sends the data to the computer (1).

2. A rectifier electrical performance automatic testing system according to claim 1, characterized in that: The switch unit (2) comprises a plurality of multiplexers, each of which is connected to a switching cable (3).

3. A rectifier electrical performance automatic testing system according to claim 1, characterized in that: It also includes a first adapter cable (6) and a second adapter cable (12); the computer (1) sends a collection instruction to the switch unit (2) via the first adapter cable (6); and the computer (1) connects to the relay control switch (5) via the second adapter cable (12) to perform switch relay control.

4. A rectifier electrical performance automatic testing system according to claim 1, characterized in that: Also includes: A switching cable (3), a cable connector (4) and a switching acquisition cable (13); The switch unit (2) is connected to the rectifier temperature cycle test bench (7) via a switching cable (3), a cable connector (4) and a switching collection cable (13).

5. The rectifier electrical performance automatic testing system according to claim 1, characterized in that: It also includes: a rectifier connecting cable (9); a rectifier temperature cycle test bench (7) connected to the rectifier product (10) via the rectifier connecting cable (9).

6. A method for automatically testing the electrical performance of a rectifier, characterized in that: include: The computer (1) sends a collection instruction to the switch unit (2); The computer (1) sends a switch control signal to the relay control switch (5); The relay control switch (5) controls the relay switch according to the switch control signal; When the relay control switch (5) is turned off, the AC interface (11) is connected to the signal source (8) to provide a power signal and an input signal to the rectifier temperature cycle test bench (7); The rectifier temperature cycle test bench (7) forwards the power supply signal and the input signal to the rectifier product (10); The rectifier product (10) generates test data according to the power supply signal and the input signal; The switch unit (2) collects test data of the rectifier product (10) according to the collection instruction through the rectifier temperature cycle test bench (7) and sends the data to the computer (1); The computer (1) determines the quality of the product based on the test data.

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