Patent ID: 9046597
Filing Date: 2015-06-02
Classification: G01D,G01S,G06F,G16Z

Abstract:
1. A monitoring sensor for monitoring a monitoring area, wherein the monitoring sensor is configured to apply an output signal at an output in order to transmit a piece of information, and after the detection of an object, to change the signal applied at the output and trigger a switching process, wherein the monitoring sensor is configured to detect a test signal, comprising a level change, of an external signal generator at an input for receiving signals, and to switch the monitoring sensor from a passive state to an active state when a signal is detected, and to switch the monitoring sensor to a test state after an activation period has expired for activating from the passive to the active state, and to change an output signal of an output of the monitoring sensor after a subsequent test period has expired, this change in the output signal corresponding to a signal which occurs when the monitoring sensor triggers a switching process after an object has been detected, and to convert the output signal back to the initial state after the withdrawal of the test signal has been detected, and to provide this renewed signal change as the signal for the external signal generator, the monitoring sensor changing to the monitoring state after this signal sequence.