Infrared touch screen pcba test method and test fixture
A test fixture and test method technology, applied in the direction of electronic circuit testing, etc., can solve the problems of reducing the efficiency of testing and production, cumbersome and complicated testing process, accurate positioning of fault points, etc., to achieve improved efficiency, simple operation, and accurate positioning. Effect
Active Publication Date: 2016-08-17
GUANGZHOU HUAXIN ELECTRONICS TECH
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Problems solved by technology
[0005] However, testing the entire outer frame by testing software cannot accurately locate the fault point on a certain PCBA of the outer frame, and if the test finds that the outer frame has a faulty PCBA, the outer frame needs to be disassembled for maintenance. Then assemble the outer frame for testing. The whole testing process is cumbersome and complicated, which reduces the efficiency of testing and production.
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[0053] The embodiment of the present invention provides a test method and a test fixture for an infrared touch screen PCBA, which are used to test a test board separately, to know whether the function of the test board is normal, to accurately locate the fault point of the infrared touch screen PCBA, and to test the process. No assembly and disassembly is required, the operation is simple, and the efficiency of testing and production is improved.
[0054] In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the following The described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordi...
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The embodiment of the present invention discloses a test method for an infrared touch screen PCBA, which is used to test a test board alone, to know whether the function of the test board is normal, and to accurately locate the fault point of the infrared touch screen PCBA, and the test process does not require assembly and disassembly. The operation is simple, and the efficiency of testing and production is improved. The method in the embodiment of the present invention includes: inputting a control signal to board A, so that board A emits an infrared signal; obtaining an analog signal from board B, and outputting the analog signal after receiving the infrared signal by board B; Judging whether the analog signal meets a preset condition, if yes, then the test boards in the A board and B board are functioning normally, if not, then the function of the test board is malfunctioning. The embodiment of the present invention also provides a test fixture for an infrared touch screen PCBA.
Description
technical field [0001] The invention relates to the field of automatic testing, in particular to a testing method and a testing fixture for an infrared touch screen PCBA. Background technique [0002] Infrared Touch Screen Technology (Infrared Touch Screen Technology, referred to as infrared touch screen) is composed of infrared emitting and receiving sensing elements installed on the outer frame of the touch screen. On the surface of the screen, an infrared detection network is formed. Any touching object can change the infrared rays on the contacts. And realize the touch screen operation. The realization principle of the infrared touch screen is similar to that of the surface acoustic wave touch screen, which uses infrared emitting and receiving sensing elements. These elements form an infrared detection network on the surface of the screen, and the touch-operated object (such as a finger) can change the infrared rays of the touch, and then be converted into the coordinat...
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IPC IPC(8): G01R31/28
Inventor 张利财左春生刘辉武
Owner GUANGZHOU HUAXIN ELECTRONICS TECH