A DEVICE FOR MONITORING THE CLOSED STATE OF A SEAT BELT BUCKLE IN A MOTOR VEHICLE

摘要

A seat belt buckle monitor switch has a cooperative circuit for indicating the closed state of a seat belt buckle in a motor vehicle. Due to high-grade monitorability, it has a high sensory reliability. The device is structurally designed such that it allows an operation of additionally provided circuit elements in at least one monitoring current loop. If a contact element is at an erroneous potential due to interruption of a current path outside or inside the switching component, this is detected in the test circuit.