ALGORITHM FOR DETECTING ACTIVATION OF A PUSH BUTTON

摘要

The invention relates to an algorithm for detecting activation of a tactile pressure sensor having a mechanic structure, acquisition electronics, and a specific sensor behavior. The algorithm includes (a) measuring an input quantity (f0) corresponding to a force applied on the tactile pressure sensor with determined environmental condition; (b) computing a corrected activation threshold (ΔfCOR) based on a calibrated activation threshold (ΔfCAL) evaluated during calibration of the tactile pressure sensor corrected by an electronic correction factor (CFELEC) for adjusting acquisition electronics variability, a mechanical correction factor (CFMECHA) for adjusting mechanic structure variability and a sensor correction factor (CFFSR) for adjusting sensor variability; the determined environmental condition; and an idle quantity (fidle) based on the quantity measured when the tactile pressure sensor is not pressed under the determined environmental condition; (c) comparing the measured input quantity with the corrected activation threshold to determine whether the sensor has been pressed or not.

主权项

1. An algorithm for detecting activation of a tactile pressure sensor having a mechanic structure, acquisition electronics, and a specific sensor behavior, said algorithm comprising the steps of:
a) measuring an input quantity (f0) corresponding to a force applied on the tactile pressure sensor with a determined environmental condition; b) computing a corrected activation threshold (ΔfCOR) based on a calibrated activation threshold (ΔfCAL) evaluated during calibration of the tactile pressure sensor corrected by an electronic correction factor (CFELEC) for adjusting acquisition electronics variability, a mechanical correction factor (CFMECHA) for adjusting mechanic structure variability, and a sensor correction factor (CFFSR) for adjusting sensor variability, the determined environmental condition, and an idle quantity (fidle) based on the quantity measured when the tactile pressure sensor is not pressed under the determined environmental condition; and c) comparing the measured input quantity with the corrected activation threshold to determine whether the sensor has been pressed or not.