CN103792498A - Automatic power supply testing method - Google Patents

Abstract

The present invention provides a kind of automatic test method of power supply, and its realization process is: first install automatic test system, and this automatic test system comprises digital power supply, oscilloscope, electronic load, multimeter, spectrum analyzer, microprocessor processing module, storage module, MiniUSB modules, keyboard input modules, and display modules, in which the digital power supply is connected to the power supply under test and the oscilloscope in one direction, and the microprocessor processing module is connected to the digital power supply, oscilloscope, electronic load, multimeter, spectrum analyzer, storage module, MiniUSB module, The keyboard input module, display module, and the power supply under test are one-way connected to the oscilloscope, electronic load, multimeter, and spectrum analyzer, and the electronic load is one-way connected to the oscilloscope. Through the automatic test system, the keying test process is automatically completed. Compared with the prior art, the automatic power supply test method has the advantages of fast test speed, high precision, greatly reduced workload, improved work efficiency, etc.; it has strong practicability and is easy to popularize.

Description

A kind of automatic test method of power supply

technical field

The invention relates to the technical field of power supplies, in particular to a power supply automatic testing method.

Background technique

With the development of a large number of electronic products, the power supply is an indispensable part of many electronic products. The stability test of the power supply is also the work that the power supply engineer must implement. A large number of tests need to be tested with discrete instruments, and the power supply engineer is constantly setting up Parameters, recording parameters and processing data, the work is cumbersome and the test workload is heavy, especially the test efficiency of a very complicated power supply system like a server is particularly low, so it is very important to use a practical, efficient and practical power supply automatic test system Necessary.

At present, there are many power supply automatic test systems in the industry, and they all adopt a very integrated solution, that is, power supply, oscilloscope, electronic load and processing unit are all integrated into one piece, but there is a disadvantage that the test conditions do not meet the traditional test conditions. Since there is no very authoritative official approval for the integration solution, many test conditions require the use of the most high-end and most authoritative instruments in the industry, such as Tektronix, agilent, chroma and other top brands. Each brand has its own unique and proficient place. And these have become the standard of the industry, so those highly integrated power supply test systems have become a limitation of their non-professionals.

Based on this, an automatic power supply test method is now provided, which uses a microprocessor to set and detect test parameters through communication interfaces such as GPIB. The test accuracy and other parameters fully meet the requirements of various power supply tests, especially for such a complicated server. The work of power system testing has solved the problems of automatic testing, testing accuracy and efficiency, reduced the workload of power supply engineers, and greatly improved the testing efficiency. the

Contents of the invention

The technical task of the present invention is to solve the deficiencies of the prior art and provide an automatic power supply testing method with high testing precision and high testing efficiency.

The technical solution of the present invention is realized in the following manner, the automatic testing method of this kind of power supply, its realization process is:

First install the automatic test system, the automatic test system includes digital power supply, oscilloscope, electronic load, multimeter, spectrum analyzer, microprocessor processing module, storage module, Mini USB module, keyboard input module, display module, in which the digital power supply is unidirectional Connect the power supply under test and the oscilloscope, and the microprocessor processing module connects the digital power supply, oscilloscope, electronic load, multimeter, spectrum analyzer, storage module, Mini USB module, keyboard input module, and display module in two-way communication, and the power supply under test One-way connection to oscilloscope, electronic load, multimeter, spectrum analyzer, electronic load one-way connection to oscilloscope;

According to the test requirements of the power supply, connect the GPIB interface of the digital power supply, oscilloscope, electronic load, multimeter, and spectrum analyzer to the test system line correctly, input the items to be tested, parameters and test conditions through the keyboard, and start the automatic test;

The test system automatically initializes each instrument through the GPIB interface of each instrument, and checks whether it can be used for testing after preheating;

Check the impedance input and output requirements of the power supply and prepare for testing;

Set the output voltage, current and OCP value of the digital power supply. After checking that there is no error, conduct the test according to the original set test items, set the parameters of the electronic load according to the test requirements, and record the corresponding parameters with the relevant instruments. After the record is completed, proceed to the next item. Test until the test is complete;

Record each parameter, and fill the results into the EXCEL format report stored in the storage module in advance, and use the display module to display the test progress and items in each test step;

Finally, complete the test and read the complete test report in the storage module through mimi USB and export it.

Described microprocessor processing module is connected and communicated with above-mentioned multimeter, oscilloscope, spectrum analyzer by GPIB, RS232 or RJ45 communication interface, it realizes by CPU or ARM high-speed chip, self, storage module, display module, mimi USB interface module carry out The initialization configuration of the registers is to initialize the above-mentioned test instruments through GPIB, then enter the test items and parameters through the keyboard, and then perform the test, and then record the test results and automatically fill them in the report of the storage module.

The beneficial effect that the present invention produces compared with prior art is:

A power automatic test method of the present invention uses a microprocessor and the GPIO interface of a distributed professional test instrument to integrate various test parameters and record various parameters of the power supply. The system is programmable and more convenient for testing. Compared with the traditional manual Instrument testing, the invention has the advantages of fast testing speed, high precision, can greatly reduce workload and improve work efficiency; it has strong practicability and is easy to popularize.

Description of drawings

Accompanying drawing 1 is the schematic structural diagram of the automatic test system of the present invention.

Detailed ways

A power automatic test method of the present invention will be described in detail below in conjunction with the accompanying drawings.

A power supply automatic testing method, the realization process of which is as follows:

As shown in Figure 1, first install the automatic test system, the automatic test system includes digital power supply, oscilloscope, electronic load, multimeter, spectrum analyzer, microprocessor processing module, storage module, Mini USB module, keyboard input module, display Module, in which the digital power supply is connected to the power supply under test and the oscilloscope in one direction, and the microprocessor processing module is connected to the digital power supply, oscilloscope, electronic load, multimeter, spectrum analyzer, storage module, Mini USB module, keyboard input module, and display module in two-way communication , the power supply under test is unidirectionally connected to the oscilloscope, electronic load, multimeter, and spectrum analyzer, and the electronic load is unidirectionally connected to the oscilloscope.

Among the above technical solutions, the high-precision digital power supply, oscilloscope, electronic load, multimeter, and spectrum analyzer are professional and top-notch instruments in the industry, all of which are equipped with GPIB communication interface and two-way communication, and the initial setting and testing of the instrument can be performed through instructions You can also read the value detected by the instrument through the register.

The power supply under test is a designed power supply to be tested, and the most basic one has input and output pins for testing.

Microprocessor processing module: realized by high-speed chips such as CPU or ARM, initial configuration of registers for itself, storage module, display module, and mimi US interface module, initial settings for each test instrument through GPIB, and then keyboard input test Items and parameters, and then tested, and then the test results are recorded and automatically filled in the report of the storage module.

Storage module: It is composed of large-capacity TF card or storage particles, and stores the programming, initialization information and test report information of the microprocessor. The programming and initialization information is burned by the chip programmer, and the test report information is read and stored by the PC. accomplish.

Mini USB module: It is used to realize the programming of the microprocessor by the PC and the reading of the test report.

Keyboard input module: This keyboard can input test items, parameters and test conditions.

Display module: It is composed of a liquid crystal screen, which is controlled by a microprocessor to display information such as the current test items, register return results, and system status.

According to the test requirements of the power supply, connect the digital power supply, oscilloscope, electronic load, multimeter, and spectrum analyzer to the GPIB interface of the test system correctly, input the items to be tested, parameters and test conditions through the keyboard, and start the automatic test.

The test system automatically initializes each instrument through the GPIB interface of each instrument, and checks whether it can be used for testing after warming up.

Check the impedance input and output requirements of the power supply and prepare for testing.

Set the output voltage, current and OCP value of the digital power supply. After checking that there is no error, conduct the test according to the original set test items, set the parameters of the electronic load according to the test requirements, and record the corresponding parameters with the relevant instruments. After the record is completed, proceed to the next item. Test until the test is complete.

Record each parameter, and fill the result into the EXCEL format report stored in the storage module in advance, and use the display module to display the test progress and items in each test step.

Finally, complete the test and read the complete test report in the storage module through mimi USB and export it.

Described microprocessor processing module is connected and communicated with above-mentioned multimeter, oscilloscope, spectrum analyzer by GPIB, RS232 or RJ45 communication interface, it realizes by CPU or ARM high-speed chip, self, storage module, display module, mimi USB interface module carry out The initialization configuration of the registers is to initialize the above-mentioned test instruments through GPIB, then enter the test items and parameters through the keyboard, and then perform the test, and then record the test results and automatically fill them in the report of the storage module.

The test system is mainly composed of a microprocessor and various discrete test instruments. The microprocessor is used to directly set and read the parameter values measured by the instrument through the GPIB, RS232 or RJ45 communication interface, and the test items and parameters can be input manually or automatically. , the microprocessor automatically tests and outputs test parameters and reports.

The above description is only an embodiment of the present invention, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims (2)

1. a power supply automatic detecting method, is characterized in that its implementation procedure is:

First Auto-Test System is installed, this Auto-Test System comprises digital power, oscillograph, electronic load, multimeter, spectrum analyzer, microprocessor processes module, memory module, Mini USB module, keyboard load module, display module, the wherein tested power supply of the unidirectional connection of digital power and oscillograph, microprocessor processes module two-way communication connects digital power, oscillograph, electronic load, multimeter, spectrum analyzer, memory module, Mini USB module, keyboard load module, display module, tested power supply is unidirectional connection oscillograph, electronic load, multimeter, spectrum analyzer, the unidirectional connection oscillograph of electronic load,

Gpib interface exact connect ion test macro circuit digital power, oscillograph, electronic load, multimeter, spectrum analyzer being carried by the test request of power supply, project, parameter and test condition that keyboard input will be tested, start test automatically;

Test macro carries out initialization setting by the gpib interface of each instrument by each instrument automatically, and whether after preheating, check can be for test;

Check the impedance input and output requirement of power supply, setup test;

Output voltage electric current and the OCP value of digital power are set, check errorless after, test according to the test event of original setting, the parameters of electronic load is set according to test request, and by the parameter of correlate meter recording responses, record and carried out the next item down test, until tested;

Record each parameter, and result is inserted to the report that is stored in advance memory module the inside EXCEL form, show testing progress and project at each testing procedure with display module;

Finally complete test and read complete test report and the derivation in memory module by mimi USB.

2. a kind of power supply automatic detecting method according to claim 1, it is characterized in that described microprocessor processes module passes through GPIB, RS232 or RJ45 communication interface and above-mentioned multimeter, oscillograph, spectrum analyzer connects communication, it is realized by CPU or ARM high-speed chip, to self, memory module, display module, mimi usb interface module carries out the initial configuration of register, by GPIB, above-mentioned testing tool is carried out to initialization setting, carry out afterwards keyboard input test project and parameter, then test, then the outcome record of test is also inserted in the report of memory module automatically.