Movement alarm with at least one dual sensor for detecting heat radiation

摘要

The alarm detects the heat radiation emanating from a heat-emitting object (14) in a room being monitored, and is supplied to a dual sensor (1) operating in a differential circuit across an optical component. The electrical sensor signal produced is fed to an alarm transmitter across a signal former (2-6). A double dual sensor (1a,1b) with respective vertical and horizontal dual elements serves as a dual sensor. The elements respectively determine radial and tangential movements. The two dual elements are electrically separated and respectively with an own signal former form a vertical channel (A), also an horizontal channel (B), for determining the movement signals. The signals from the two channels are supplied to a judgment unit (8), which also activates an alarm transmitter (10).