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Automatic testing and emendation system and method for finished circuit board

A finished circuit board, automatic testing technology, applied in electronic circuit testing and other directions, can solve problems such as slow testing process, laborious data recording, and a large number of transfer switches, and achieve the effects of convenient debugging, convenient operation and high measurement accuracy

Inactive Publication Date: 2010-05-19
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method, like the multi-point test, requires a large number of transfer switches, which is inconvenient to operate, complicated to work, difficult to maintain, and laborious to record data.
[0008] To sum up, the main problems of the existing finished circuit board testing device are that it can only test a few or even one test point at a time, the data recording is cumbersome, the operation is inconvenient, and the efficiency is low
Due to the limitations of the test device, the test method can only be limited to using a multimeter or an oscilloscope to directly contact the test points on the finished circuit board for measurement. The test process is slow, the data recording is cumbersome, and the labor intensity is high.

Method used

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  • Automatic testing and emendation system and method for finished circuit board
  • Automatic testing and emendation system and method for finished circuit board
  • Automatic testing and emendation system and method for finished circuit board

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] This embodiment takes the PCBA test of the electric welding machine industry as an example. The computer adopts the products of Taiwan Advantech Technology Co., Ltd. The detailed parameters are as follows:

[0036] Computer (industrial computer):

[0037] PCA-6006LV motherboard

[0038] PCA-6113P4 base plate

[0039] Intel Pentium 42.4GHz CPU

[0040] Kingston 256M DDR memory

[0041] Seagate 80G IDE hard drive (7200 rpm)

[0042] Asus DVD drive

[0043] D-Link 100M network card

[0044] 250W industrial power supply

[0045] Data acquisition control card model: PCL-1800, a 330KHz high-speed multi-function data acquisition card. The detailed parameters are as follows:

[0046] 12-bit A / D, 330KS / s sampling rate

[0047] 1K sampling FIFO

[0048]16 single-ended or 8 differential inputs

[0049] 2-way 12-bit D / A (one with DMA)

[0050] 16-way DIO and a 16-bit counter

[0051] Analog trigger function

[0052] 16 analog watchdogs for analog trigger

[0053] Su...

Embodiment 2

[0078] This embodiment takes the most common KR circuit board in the electric welding machine industry as an example.

[0079] Put the KR series PCBA into the needle bed, clamp the tooling, check the connection and power on;

[0080] Start the computer, run the data collection and processing program, input the name of the tester and the PCBA model, and after confirmation, perform a series of initializations and enter the waiting state;

[0081] Click "Start Collection", the system starts to collect the information of each point, and displays it on the screen after proper processing. If no calibration is required, click Save and the test ends.

[0082] This embodiment has been tested and has the following characteristics:

[0083] 1. High test and correction efficiency: give full play to the advantages of the powerful acquisition and control functions of the software and data acquisition control card, collect the signals of each test point through the needle bed, send them to...

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PUM

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Abstract

The invention discloses a system and a method for the automatic testing regulation of the finished goods of circuit wafers, and the system comprises a neilsbed, a signal conditioning board, a data collecting control card and a computer, and the signal conditioning board is respectively connected with the neilsbed and the data collecting control card, and the data collecting control card is connected with the computer. The method comprises the following steps: starting the computer and implementing initialization, inputting operation information such as a PCBA model number, etc., putting the PCBA to be tested into the neilsbed, implementing a test which aims at testing a plurality of testing points on the PCBA, transmitting a testing signal to the data collecting control card, and displaying the testing signal by the computer. The invention achieves the goals of the one-off testing, the automatic saving and the information displaying of all the voltage or waveform testing points, and has convenient operation, low cost, stable and reliable collecting process and high precision; furthermore, the system can receive and send digital signals, reduce manual operation, and improve testingefficiency. The system is applicable to the PCBA testing of various industries.

Description

technical field [0001] The invention relates to the technical field of production inspection and test calibration of printed circuit boards and finished circuit boards, in particular to an automatic test calibration system for finished circuit boards and an automatic test calibration method thereof. Background technique [0002] Printed circuit board (PCB) appears in almost every electronic device. In addition to fixing various electronic components, the main function of PCB is to provide electrical connection of various parts on the board. The finished circuit board (Printed circuit board Assemble, PCBA) is the finished product after the whole process of SMT assembly and DIP plug-in on the basis of the printed circuit board, referred to as PCBA. As electronic equipment becomes more and more complex, there are more and more required parts, adjusted components, required voltage value / voltage waveform test points, and test functions, which directly bring a huge detection burde...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/28
Inventor 薛家祥朱思君姚屏黄文超
Owner SOUTH CHINA UNIV OF TECH
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