"ACTIVE EDGE" TYPE CONTACT SENSOR STATE MONITORING DEVICE Russian patent published in 2025 - IPC G08B13/00 

FIELD: electrical engineering.

SUBSTANCE: invention relates to the field of electrical equipment, in particular to alarm systems that operate under a certain condition, and can be used in various alarm systems to monitor the state of contact sensors, in particular, to monitor the “active edge” type contact sensor state located in the end rubber sealing profile of sliding plug doors. Device comprises two optocouplers and two resistors connected at common point “A”. Anode of the light-emitting diode of the first optocoupler is connected directly to the point A, the anode of the light-emitting diode of the second optocoupler is connected to the point A through a second resistor. First resistor together with the active edge sensor forms a voltage divider. Cathode of the light-emitting diode of the first optocoupler is connected to the output of the contact sensor. Cathode of the light-emitting diode of the second optocoupler is connected to the GND circuit for the periphery.

EFFECT: improving functional reliability of the device under action of powerful magnetic fields.

1 cl, 1 dwg