CIRCUIT ARRANGEMENT AND METHOD FOR DETECTING AN ARC IN A MOTOR VEHICLE

摘要

The invention relates to a circuit arrangement for detecting an arc in a motor vehicle, said circuit arrangement comprising a vehicle electrical system with a battery (1) and a load (3), a control device (2) for switching the battery (1) of the vehicle electrical system dependent on a signal, and an ultraviolet radiation detector (5) for providing a light measurement signal which correlates to an intensity of an ultraviolet radiation emitted in the event of an arc (4). Furthermore, an analyzing unit for dynamically analyzing the light measurement signal is designed to signal the presence of the arc (4) by means of the signal to the control device (2) on the basis of a change of the light measurement signal. The invention further relates to a motor vehicle comprising such a circuit arrangement and to a method for operating such a circuit arrangement.