Intelligent dead point recognition and self-adaptation compensation method for infrared touch screen
An infrared touch screen and self-adaptive compensation technology, applied in the direction of instrumentation, electrical digital data processing, data processing input/output process, etc., can solve the problems of undetectable, unmentioned, cost increase, etc., to eliminate resolution reduction, The effect of increasing the working stability and prolonging the service life
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[0032] The following combination figure 1 with figure 2 , An embodiment of the present invention will be described in detail.
[0033] A1. The infrared touch screen works normally, the scanning period is T, the dead-point detection period is BadCheckTime=CountNum*COVERTIME*T, and the blocking information array is BlindNUM[LED_NUM], where CountNum is the number of intervals for recording touch blocking positions. =10ms as an example, the value range is 200-1000; COVERTIME is the threshold of the number of occlusions for dead-point determination, when implemented, the value range is 10-150; LED_NUM is the total number of infrared pairs of infrared touch screens.
[0034] A11. Record the infrared tube serial number of the current touch shielding position into the shielding information array BlindNUM[LED_NUM] every CountNum scan cycles, add 1 to the corresponding number of shielding times, and check whether there is BlindNUM[LED_NUM]> in the array The conditions of COVERTIME are estab...
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