Signal output method and device for detecting fpca and pcba
A technology for signal output and equipment, which is applied in the field of equipment detection and can solve the problem that the clock waveform signal cannot be generated.
Inactive Publication Date: 2019-11-29
JILIN NORMAL UNIV
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[0004] The embodiment of the present invention provides a signal output method and device for detecting FPCA and PCBA, which is used to solve the technical problem that the clock waveform signal input to FPCA cannot be generated in the prior art
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[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0024] The method of the embodiment of the present invention is applied to the signal output system of detecting FPCA and PCBA, in order to detect the function of FPCA and PCBA, that is, the CLK waveform signal output by FPCA and PCBA, a difficult point that must be overcome is that it is necessary to provide waveform signal input, but due to This...
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The embodiment of the invention provides a signal output method and device for detecting an FPCA and a PCBA. The method comprises: a single-chip microcontroller controls a first output port and a third output port to output a first level signal and a second level signal respectively at a first time interval within each preset cycle of an output period of time; the single-chip microcontroller controls a second output port and a fourth output port to respectively output a first level signal and a second level signal at a second time interval within each preset cycle; the single-chip microcontroller controls the first output port and the third output port to respectively output a second level signal and a first level signal at a third time interval within each preset cycle; and the single-chip microcontroller controls the second output port and the fourth output port to respectively output a second level signal and a first level signal at a fourth time interval within each preset cycle. Therefore, CLK waveform signals are provided for an FPCA and a PCBA to detect functions of the FPCA and the PCBA.
Description
technical field [0001] The embodiment of the present invention relates to the technical field of equipment detection, in particular to a signal output method and equipment for detecting FPCA and PCBA. Background technique [0002] Printed Circuit Board Assembly (PCBA) is an essential power supply module for electronic equipment. Due to the lighter and thinner requirements of electronic devices (such as smart phones and tablet computers), PCBA in liquid crystal modules of many electronic devices has been replaced by Printed Circuit Board Assembly (FPCA for short). Due to the characteristics of FPCA's flexibility, thinness, and easy deformation, it has brought certain difficulties to the Surface Mount Technology (SMT) process, and equipment errors and personnel operations have an impact on the functions of FPCA, so it cannot be guaranteed. All products after SMT are good products. Due to its own manufacturing process limitations, FPCA cannot apply solder resist ink between c...
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IPC IPC(8): G01R31/28
CPCG01R31/2815
Inventor 王立忠丛林王冠然刘洪波许德成孟昭辉
Owner JILIN NORMAL UNIV