Single board testing system integrating program writing and circuit functional testing

Abstract

The invention provides a single board testing system integrating program writing and circuit functional testing, which comprises a power supply module, a main controller, a CAN communication module, aplurality of offline writing tools and a plurality of offline writing controllers, wherein the offline writing tools are connected with the offline writing controllers in a one-to-one correspondencemanner, the plurality of offline writing controller include a plurality of offline writing controller, the plurality of offline writing controller are sequentially connected through serial ports, theoffline writing controller located at the tail end is connected with the main controller through the CAN communication module, the offline writing controller located at the tail end sends fixation information of all offline writing controllers to the main controller, and the main controller carries out judgment on the fixation information and confirms that the writing is successful if there is noerror. The invention establishes a single board testing tool integrating program writing and PCB testing so as to achieve the purposes of high efficiency, low cost and simple operation.

Description

technical field [0001] The invention relates to the technical field of PCB single-board testing, in particular to a single-board testing system integrating program programming and circuit functional testing. Background technique [0002] Due to the needs of enterprise production, there will be a large number of semi-finished PCB boards coming back from the factory to be assembled every day. These PCB boards are faced with two problems: 1. The main controller or DSP used on the PCB needs to be burned in advance before assembly program. 2. Even when SMT technology is so mature today, we will inevitably encounter PCB boards with bad placement. Before assembly, we must quickly and accurately pick out these bad PCB boards to avoid leaving them in the In the next production. So how to complete the above two steps has become a difficult problem for major enterprises. [0003] First of all, for the programming of each IC program on the PCB, each company has its own method before:...

AI Technical Summary

Problems solved by technology

[0002] Due to the needs of enterprise production, there will be a large number of semi-finished PCB boards coming back from the factory to be assembled every day. These PCB boards are faced with two problems: 1. The main controller or DSP used on the PCB needs to be burned in advance before assembly program

[0003] First of all, for the programming of each IC program on the PCB, each company has its own method before: 1: Manual programming is possible: the programming work is completed by manual operation. This method has high requirements for workers, high error rate, and is difficult. To achieve batching, generally do not use

2: Purchase the corresponding automatic programming machine: Generally, IC manufacturers will provide their own automatic programming devices for ICs, which can complete batch programming work, and the operation is simple, and it is not easy to fail programming, but the disadvantage is that the cost is high

3: Directly let the IC manufacturer do the burning: IC manufacturers can also directly burn the program for the company before leaving the factory, but this method will also increase more costs

Disadvantages: The production and debugging cycle of the test needle bed fixture is long and expensive; some high-density SMT circuit boards cannot be tested due to the problem of test accuracy

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