Infrared sensor module for detecting infrared rays radiated by human body and in e.g. automatic water supplying system, has control unit actuating actuator by controlling oscillation unit in response to signal read from infrared sensor

摘要

The module has a displaceable element (105) coupled to a vibrating rod (103) in a manner to be displaced in an axial direction, and a protective plate fixed on the displaceable element in front of an infrared sensor. The plate passes and blocks incident infrared radiation in an alternate manner, and an oscillation unit delivers output of square waves and applies the square wave output to a piezoelectric actuator (100). A control unit actuates the actuator by controlling the oscillation unit in response to a signal read from the infrared sensor.