Method for determining an interior temperature of a passenger area of a motor vehicle, arrangement for execution of the method, and a temperature sensor
First Claim
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1. A method for determining a temperature of an interior of a vehicle, the method comprising:
- measuring and storing a control value for a control element having a control element surface, the control value being representative of the temperature of the control element surface that is provided in the interior of the vehicle and measured with a temperature sensor when there is no air movement within the interior of the vehicle;
providing a pulsed signal to a heat element of the control element through an impulse-damping segment of the control element so that the temperature sensor exhibits a temperature change;
measuring a step response of the temperature sensor;
comparing the step response of the temperature sensor with the control value to determine a damping amount of air flow on the heat element, wherein the damping amount comprises a change in temperature of the temperature sensor per a unit of time;
comparing the determined damping amount to a predetermined damping amount value for a no air flow state of the heat element,determining a presence or absence of air flow in the interior of the vehicle on the basis of the comparison of the determined damping amount with the predetermined damping amount value;
determining the temperature of the interior of the vehicle with a correction value based on the determination of the presence or absence of air flow and a temperature value from the temperature sensor; and
providing the temperature of the interior of the vehicle to a vehicle system.
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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.
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Citations
20 Claims
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1. A method for determining a temperature of an interior of a vehicle, the method comprising:
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measuring and storing a control value for a control element having a control element surface, the control value being representative of the temperature of the control element surface that is provided in the interior of the vehicle and measured with a temperature sensor when there is no air movement within the interior of the vehicle; providing a pulsed signal to a heat element of the control element through an impulse-damping segment of the control element so that the temperature sensor exhibits a temperature change; measuring a step response of the temperature sensor; comparing the step response of the temperature sensor with the control value to determine a damping amount of air flow on the heat element, wherein the damping amount comprises a change in temperature of the temperature sensor per a unit of time; comparing the determined damping amount to a predetermined damping amount value for a no air flow state of the heat element, determining a presence or absence of air flow in the interior of the vehicle on the basis of the comparison of the determined damping amount with the predetermined damping amount value; determining the temperature of the interior of the vehicle with a correction value based on the determination of the presence or absence of air flow and a temperature value from the temperature sensor; and providing the temperature of the interior of the vehicle to a vehicle system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification