Back to results
US 7,198,402 B2Granted
Method for determining an interior temperature of a passenger area of a motor vehicle, arrangement for execution of the method, and a temperature sensor
AssigneePreh GmbH
InventorAnton Ruettiger
Life of this patent
Estimating the term…
Abstract
A signal (Snormal) is provided to a heat element of a temperature sensor, which is recorded as a step response (Lruh, Lbew). From the difference of the step response compared with the reaction adaptively determined with the temperature sensor at zero air circulation, air flow or no air flow is determined.
Claims16
A method for determining an interior temperature based on a value for incident sun radiation recorded with a photo sensor and/or a surface temperature at a measuring area recorded with a temperature sensor,
- wherein air circulation in front of the measuring area is determined, which, is weighted as a variable heat-transmission resistance, and is entered as a correction value into the recorded incident sun radiation,
- wherein in a first measurement with the temperature sensor, a step response of the temperature sensor at zero air circulation is taken and recorded in response to a heat element being provided with a signal, and
- wherein from the difference of the step response as compared to a second response the presence or absence of air circulation is determined, which determination is utilized for determining the interior temperature based on the correction value.
Dependencies are inferred from the claim text.