Device for automatically testing circuit board with microprocessor

Abstract

The invention relates to a device for automatically testing a circuit board with a microprocessor. The device consists of a needle bed box, a wrench, a test module, a display control device, a pressing plate, a supporting upright post, a stroke switch and a code spraying device, wherein the test module is matched with the circuit board needing to be tested, each circuit board is matched with one module, and a plurality of same circuit boards to be tested are tested simultaneously; the display control device is used for displaying test results, inputting operation instructions, detecting the output signals of the circuit boards and simulating the output signals of the circuit boards, and the control part of the display control device can be arranged in the needle bed box and also outside the needle bed box; the needle bed box consists of a spring, a probe, a module object, a circuit board supporting plate and the circuit boards to be tested; and the upright post is arranged on the needle bed box, is provided with the wrench, can control the up and down movement of the pressing plate through the wrench, and is provided with the stroke switch. The device has the advantages of completely integrating functions such as clock calibration, chip burning, factory number burning, function test, code spraying and the like, saving a large number of processes, and avoiding the phenomenon of unstable quality during manual operation by using a machine for testing, wherein single testing equipment can test thousands of circuit boards every day.

Description

technical field [0001] The invention relates to a testing device for a circuit board, in particular to a device for automatically testing a circuit board containing a microprocessor. Background technique [0002] At present, many circuit boards contain microprocessors. Before leaving the factory, the circuit boards need to be programmed and debugged. The conventional practice is to program the microprocessors with a dedicated programmer before welding, and then use a dedicated programmer after welding. Test the bed of needles or manually debug. This method requires a separate programming process before welding, and the efficiency is low; many microprocessors support online programming, and the method of welding first and then debugging can be used. Since the online programming tool is provided by the chip manufacturer Providing, programming and circuit board testing need to be carried out in two steps, which is inefficient; many microprocessors have inaccurate internal clock...

AI Technical Summary

Problems solved by technology

It is not difficult to see that this patent is mainly aimed at the automatic detection of circuit board functions for the same substrate with different forms. The detection function is single and the application area is small.

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