Air conditioning system's ambient temperature determining method for motor vehicle, involves determining minimum value from discrete temperature values lying in measurement window, and outputting value as ambient temperature

摘要

The method involves continuously detecting and quantizing a temperature signal by a temperature sensor (1) arranged in a motor vehicle. A minimum value (Tmin) is determined from discrete temperature values lying in a given measurement window. The minimum value is output as ambient temperature to a controller of an air conditioning system of the motor vehicle by an output unit (3). A time duration is provided for the measurement window. The time duration lagging from a current measuring time point for determining a current temperature value (Tx) is provided as the measurement window. An independent claim is also included for a device for determining ambient temperature for a motor vehicle.