Other characteristics and advantages of a sensor placed in óoeuvre of a device for the verification of the operation of this system of detection.

摘要

Detection system with a sensor (1) controlled by a transmitter (2) and comprising an electronic control unit (4), certain pins are adapted to control a control circuit, and at least one pin called pi is connected to the sensor which may take either a conducting state when it is influenced by the transmitter and for which the node p.sub.i is brought to an active state, or an off state when it is incorrectly influenced by the transmitter and for which the node p.sub.i is brought to an inactive state. & br / according to the invention, the detection system comprises a device for checking the correct operation of the sensor which comprises an additional control circuit (12) connected to the sensor (1), and another pin called the pc of the central unit (4), as well as in said central a generator - programmer, which operates at intervals of time, the mail item on the said spindle pc of an activation signal of the circuit (12), and which analyses the instantaneous state of the node p 1 so as to prevent the central control unit, the control of the control circuit if this instantaneous state is different from the inactive state.