Method for monitoring an air-conditioned passenger compartment of a vehicle, and air-conditioning arrangement for carrying out such a method
AssigneeSiemens Mobility GmbH
InventorsGerhard Reiss, Alexander Hildebrandt
Life of this patent
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Abstract
A method monitors a passenger compartment of a vehicle for transporting passengers with respect to heat stress that occurs to passengers. The method includes the steps of: a) calculating an estimated value for the WBGT index in the passenger compartment on the basis of measured values which are signaled to an evaluation unit by a sensor arrangement, and b) signaling a dangerous heat stress level for the passengers on the basis of calculations and monitoring of the WBGT index.
Claims13
A method for monitoring a passenger compartment of a passenger transport vehicle, being air-conditioned by means of an air-conditioning unit, with respect to heat stress occurring to passengers, the method comprises the steps of:
- a) calculating an estimated value for a wet bulb globe temperature (WBGT) index in the passenger compartment on a basis of measured values, being signaled to an evaluation unit by a sensor configuration, the calculating of the estimated value for the WBGT index being performed:
- according to the formula:
- WBGT=0.7 Tnw+0.2 Tg+0.1 Ta;
- or
- according to the formula WBGT=0.7 Tnw+0.3 Tg;
- where Tnw is a natural wet bulb temperature, Tg is a dry bulb temperature and Ta is an air temperature in the passenger compartment;
- and
- b) signaling a dangerous heat stress level for the passengers on a basis of a calculation and monitoring of the WBGT index.
Dependencies are inferred from the claim text.