Passive infrared sensor sensitivity adjustment device

Abstract

A passive infrared sensor sensitivity adjustment device includes a processing module, a sensitivity control module and a sensing function adjustment module. The processing module receives an input signal and generates a sensitivity control signal accordingly. The sensitivity control module is connected to the processing module, receives the sensitivity control signal, and generates a sensitivity adjustment signal accordingly. The sensing function adjustment module is connected to the processing module and the sensitivity control module, and receives the sensitivity adjustment signal and a sensing signal generated by the passive infrared sensor. The sensing function adjustment module adjusts a preset threshold value according to the sensitivity adjustment signal, and compares the sensing signal with the preset threshold value to generate a voltage signal. The processing module generates a start signal according to the voltage signal to activate the target device or not generate the start signal according to the voltage signal.

Dependencies are inferred from the claim text.