METHODS AND APPARATUS FOR AUTOMATIC CLIMATE CONTROL IN A VEHICLE BASED ON CLOTHING INSULATIVE FACTOR

• US 20150025738A1
• Filed: 07/22/2013
• Published: 01/22/2015
• Est. Priority Date: 07/22/2013
• Status: Abandoned Application

• Current Assignee: GM Global Technology Operations LLC (General Motors Company)
• Original Assignee: GM Global Technology Operations LLC (General Motors Company)
• Inventors: TUMAS, TODD M., BOZEMAN, JEFFREY A.
• Application Number:
  US13/947,796
• Publication Number:
  US 20150025738A1
• Time in Patent Office: Days
• US Class Current: 701/36
• CPC Class Codes: B60H 1/00742 by detection of the vehicle occupants' presence; by detection of conditions relating to the body of occupants, e.g. using radiant heat detectors
• CPC Class Codes: B60H 2001/00733 Computational models modifying user-set values

Abstract

An automatic climate control system of a motor vehicle, and related operating methods, are provided. The automatic climate control system determines a clothing insulative factor for an occupant of the motor vehicle; calculates a model temperature condition based on a temperature set-point and the clothing insulative factor; obtains a current existing temperature condition; calculates a difference between the model temperature condition and the current existing temperature condition; and changes at least one of a plurality of parameters to adjust the current existing temperature condition based on the difference.

Claims

1. A method of operating an automatic climate control system of a motor vehicle, comprising:

determining a clothing insulative factor for an occupant of the motor vehicle;

calculating a model temperature condition based on a temperature set-point and the clothing insulative factor;

obtaining a current existing temperature condition;

calculating a difference between the model temperature condition and the current existing temperature condition; and

changing at least one of a plurality of parameters to adjust the current existing temperature condition based on the difference.

2. The method of claim 1, wherein the changing comprises changing at least one of:

a discharge air temperature of the automatic climate control system;

an air flow delivery mode of the automatic climate control system; and

a fan speed of the automatic climate control system.

3. The method of claim 1, wherein the determining further comprises:

obtaining a first infrared (IR) temperature reading of an uncovered region of an occupant of the motor vehicle;

obtaining a second IR temperature reading of a clothing-covered region of the occupant;

calculating a second difference between the first IR temperature reading and the second IR temperature reading; and

correlating the calculated second difference to one of a plurality of pre-defined clothing insulative factors.

4. The method of claim 1, wherein the obtaining a current existing temperature condition, the calculating a difference between the model temperature condition and the current existing temperature condition, and the changing at least one of a plurality of parameters, are performed continuously on a timed loop.

5. The method of claim 1, wherein the obtaining of the current existing temperature condition utilizes data from at least one of:

an ambient temperature inside the motor vehicle, an ambient temperature outside the motor vehicle, a solar load, and a speed of the motor vehicle.

6. The method of claim 1, wherein the changing comprises changing the at least one of a plurality of parameters only within a pre-defined area of the motor vehicle associated with a location of the occupant.

7. The method of claim 1, further comprising:

determining a second clothing insulative factor for a second occupant of the motor vehicle;

calculating a second model temperature condition based on the temperature set-point and the second clothing insulative factor;

calculating a difference between the second model temperature condition and the current existing temperature condition; and

changing at least one of the plurality of parameters, in an area of the motor vehicle in which the second occupant is located, to adjust the current existing temperature condition based on the difference between the second model temperature condition and the current existing temperature condition.

8. A motor vehicle heating, ventilation, and air conditioning (HVAC) apparatus, comprising:

a user interface, configured to receive a user-selected temperature condition;

at least one infrared (IR) sensor, configured to collect temperature data;

a plurality of sensors, configured to collect and transmit environmental data when polled; and

an HVAC control unit, configured to;

determine a clothing insulative factor based on the collected temperature data;

calculate a corrected temperature condition based on the user-selected temperature condition and the clothing insulative factor;

obtain an existing temperature condition;

calculate a difference between the corrected temperature condition and the existing temperature condition; and

adjust the existing temperature condition toward the corrected temperature condition, based on the calculated difference.

9. The HVAC apparatus of claim 8, wherein the HVAC control unit adjusts the existing temperature condition by changing at least one of:

a discharge air temperature of the HVAC apparatus;

an air flow delivery mode of the HVAC apparatus; and

a fan speed of the HVAC apparatus.

10. The HVAC apparatus of claim 9, wherein the air flow delivery mode comprises a configuration of at least one designated HVAC vent through which air flow is discharged.

11. The HVAC apparatus of claim 8, wherein the HVAC control unit is further configured to:

obtain a first infrared (IR) temperature reading of a bare skin area of the occupant;

obtain a second IR temperature reading of a covered skin region of the occupant;

calculate a second difference between the first IR temperature reading and the second IR temperature reading; and

correlate the calculated second difference to one of a plurality of pre-defined clothing insulative factors.

12. The HVAC apparatus of claim 8, wherein the HVAC control unit is further configured to obtain the existing temperature condition, calculate the corrected temperature condition, and adjust the existing temperature condition continuously on a timed loop.

13. The HVAC apparatus of claim 8, wherein the HVAC control unit obtains the existing temperature condition utilizing data from at least one of the plurality of sensors, the data comprising:

an ambient temperature inside the motor vehicle, an ambient temperature outside the motor vehicle, a solar load, and a speed of the motor vehicle.

14. The HVAC apparatus of claim 8, wherein the HVAC control unit adjusts the existing temperature condition only within a specific region of the motor vehicle associated with a location of an occupant.

15. A method of operating a motor vehicle automatic climate control system, comprising:

obtaining one of a plurality of pre-defined levels of clothing insulation for an occupant of a motor vehicle;

determining a modified temperature condition using the level of clothing insulation and a pre-defined temperature condition;

determining a current temperature condition;

calculating a difference between the modified temperature condition and the current temperature condition; and

adjusting fan speed, air flow delivery mode, and air flow output temperature of the automatic climate control system to reduce a difference between the current temperature condition and the modified temperature condition.

16. The method of claim 15, wherein the adjusting of the fan speed, air flow delivery mode, and air flow output temperature comprises adjusting only within a specific region of the motor vehicle corresponding to a location of the occupant.

17. The method of claim 15, wherein the air flow delivery mode comprises a configuration of at least one designated automatic climate control system output vent.

18. The method of claim 15, wherein the determining a current temperature condition comprises acquiring climatically relevant data of the interior and exterior surroundings of a motor vehicle.

19. The method of claim 18, wherein the acquiring climatically relevant data comprises polling a plurality of sensors to obtain data, wherein the data comprises:

an ambient temperature inside the motor vehicle, an ambient temperature outside the motor vehicle, a solar load, and a speed of the motor vehicle.

20. The method of claim 15, wherein the step of obtaining one of a plurality of pre-defined levels of clothing insulation further comprises:

obtaining a first infrared (IR) temperature reading of a first defined region of the at least one occupant of the motor vehicle, wherein the first defined region comprises an uncovered region of the occupant;

obtaining a second IR temperature reading of a second defined region of the at last one occupant of the motor vehicle, wherein the second defined region comprises a region of the occupant that is covered with clothing;

calculating a second difference between the first IR temperature reading and the second IR temperature reading; and

correlating the calculated second difference to one of a plurality of pre-defined levels of clothing insulation.