A capacitive detection system for detecting occupancy of a vehicle seat includes a signal generating unit and a signal evaluation unit. The vehicle seat has a seat heater member configured for receiving pulse-width modulated electrical heater power of a pulse-width modulation frequency and time-varying output signals of the signal generating unit. The signal evaluation unit is configured to monitor a voltage difference between the electrical connection ends of the seat heater member, and is further configured to generate an output signal that is indicative of the seat heater member to be defective, on the basis of a fulfillment of at least one predetermined condition concerning the monitored voltage difference and a phase of the pulse-width modulated electrical heater power.
CAPACITIVE VEHICLE SEAT OCCUPANCY DETECTION SYSTEM WITH DETECTION OF VEHICLE SEAT HEATER MEMBER INTERRUPTION
2018-12-06
Patent
Electronic Resource
English
European Patent Office | 2016
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