Passive infrared sensor startup detecting method, for motion detector, involves detecting inhibition phase of detection signal whose duration is found by control unit from operating voltage and is less than charging phase maximum duration

摘要

The method involves initializing a motion detector, amplifying and filtering a signal at the output of an infrared sensor and carrying out a detection phase after the initialization step. A phase of inhibition of a detection signal is determined during the initialization step. A duration of the detection signal is determined by a lighting device controlling and commanding unit e.g. microcontroller, from an operating voltage and is lower than a maximum duration of a phase of the charging capacitors. An independent claim is also included for a device for implementing a method for detecting start-up for motion detector.