发明名称 |
Method of determining windshield fogging based on inference from presence of rain |
摘要 |
A method is provided of determining windshield fog secondary for automatically controlling a heating, ventilation and air conditioning (HVAC) system of a vehicle. The method includes the steps of determining whether rain is occurring on a windshield of a vehicle, determining a windshield parameter as a function of the rain occurring and determining a temperature difference based on temperature within a cabin of the vehicle and ambient temperature. The method also includes the steps of determining a fog boundary based on the windshield parameter and temperature difference, determining a relative humidity based on the windshield parameter and the temperature difference and fog boundary and determining a fog probability based on the fog boundary relative humidity and a nominal base relative humidity for rain conditions. The method further includes the steps of determining anti-fog actions to be taken based on the fog probability and taking the anti-fog actions determined to control the HVAC system.
|
申请公布号 |
US6155061(A) |
申请公布日期 |
2000.12.05 |
申请号 |
US19990472085 |
申请日期 |
1999.12.23 |
申请人 |
FORD MOTOR COMPANY |
发明人 |
DAVIS, JR., LEIGHTON IRA;HOESCHELE, JOHN DAVID;DAGE, GERHARD ALLEN |
分类号 |
B60H1/00;(IPC1-7):F29B49/02 |
主分类号 |
B60H1/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|