Local Comfort Zone Control

• US 20090242651A1
• Filed: 03/31/2008
• Published: 10/01/2009
• Est. Priority Date: 03/31/2008
• Status: Abandoned Application

• Current Assignee: Computime Electronics Company Limited
• Original Assignee: Computime Electronics Company Limited
• Inventors: Ha, Wai-leung, Chou, Robert Vincent, Lei, Kairy Kai
• Application Number:
  US12/059,442
• Publication Number:
  US 20090242651A1
• Time in Patent Office: Days
• US Class Current: 236/51
• CPC Class Codes: F24F 11/30 for purposes related to the operation of the system, e.g. for safety or monitoring
• CPC Class Codes: F24F 11/56 Remote control
• CPC Class Codes: F24F 11/62 characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
• CPC Class Codes: F24F 11/74 for controlling air flow rate or air velocity
• CPC Class Codes: F24F 2110/10 Temperature
• CPC Class Codes: F24F 2110/20 Humidity
• CPC Class Codes: F24F 3/14 by humidification; by dehumidification

Abstract

The present invention supports the remote control of an environmental unit based on an effective temperature that is indicative of a comfort index to an occupant of a controlled environmental space. The remote controller obtains a plurality of environmental factors, e.g., temperature, relative humidity, and air speed, in order to determine an effective temperature. When the effective temperature is sufficiently different from a set point temperature, the remote controller activates an environmental unit to change the effective temperature in accordance with the set point temperature. The environmental unit may include an air conditioner, furnace, or heat pump. Also, the remote controller may communicate with at least one remote sensor over a wireless communications channel in order to obtain the environmental factors for determining the effective temperature.

Claims

1. An apparatus comprising:

a memory;

a processor coupled to the memory and configured to perform;

(a) obtain a plurality of environmental factors

(b) determine an effective temperature from the plurality of environmental factors; and

(c) when the effective temperature is sufficiently different from a set point temperature, activate an environmental unit to change the effective temperature in accordance with the set point temperature.

2. The apparatus of claim 1, wherein the environmental unit comprises a heating unit and a humidifier, and wherein the processor is further configured to:

(d) when the effective temperature is sufficiently less than the set point temperature, activate the heating unit and the humidifier.

3. The apparatus of claim 2, wherein the plurality of environmental factors include a temperature measurement and a relative humidity measurement, wherein the processor is further configured to:

(e) determine the effective temperature from the temperature measurement and the humidity measurement;

(f) activate the humidifier until the effective temperature is sufficiently increased with respect to the set point temperature or until a measured relative humidity is sufficiently stable; and

(g) when the effective temperature cannot be sufficiently increased by activating the humidifier, activate the heating unit until the effective temperature is sufficiently increased with respect to the set point temperature.

4. The apparatus of claim 3, wherein the processor is further configured to:

(h) when the measured relative humidity drops below a predetermined tolerance, re-activate the humidifier.

5. The apparatus of claim 1, wherein the environmental unit comprises a cooling unit and a de-humidifier, and wherein the processor is further configured to:

(d) when the effective temperature is sufficiently greater than the set point temperature, activate the cooling unit and the de-humidifier.

6. The apparatus of claim 5, wherein:

the environmental unit further comprises a fan;

the plurality of environmental factors include a temperature measurement, a relative humidity measurement, and an air speed measurement; and

the processor is further configured to;

(e) determine the effective temperature from the temperature measurement, the humidity measurement, and the air speed measurement;

(f) activate the fan until the effective temperature is sufficiently decreased with respect to the set point temperature or until the fan reaches a maximum fan speed;

(g) when the effective temperature cannot be sufficiently decreased by activating the fan, activate the de-humidifier until effective temperature is sufficiently decreased with respect to the set point temperature or until the de-humidifier reaches a maximum de-humidifier speed; and

(h) when the effective temperature cannot be sufficiently decreased by activating the fan and the de-humidifier, activate the cooling unit until the effective temperature is sufficiently decreased with respect to the set point temperature.

7. The apparatus of claim 5, wherein:

the environmental unit further comprises a fan;

the plurality of environmental factors include a temperature measurement, a relative humidity measurement, and an air speed measurement; and

the processor is further configured to;

(e) determine the effective temperature from the temperature measurement, the humidity measurement, and the air speed measurement;

(f) activate the de-humidifier until effective temperature is sufficiently decreased with respect to the set point temperature or until the de-humidifier reaches a maximum de-humidifier speed;

(g) when the effective temperature cannot be sufficiently decreased by activating the de-humidifier, activate the fan until the effective temperature is sufficiently decreased with respect to the set point temperature or until the fan reaches a maximum fan speed; and

(h) when the effective temperature cannot be sufficiently decreased by activating the fan and the de-humidifier, activate the cooling unit until the effective temperature is sufficiently decreased with respect to the set point temperature.

8. The apparatus of claim 5, wherein:

the environmental unit further comprises a fan;

the plurality of environmental factors include a temperature measurement, a relative humidity measurement, and an air speed measurement; and

the processor is further configured to;

(e) determine the effective temperature from the temperature measurement, the humidity measurement, and the air speed measurement;

(f) activate the de-humidifier and the fan until effective temperature is sufficiently decreased with respect to the set point temperature or until the de-humidifier reaches a maximum de-humidifier speed and the fan reaches a maximum fan speed; and

(g) when the effective temperature cannot be sufficiently decreased by activating the fan and the de-humidifier, activate the cooling unit until the effective temperature is sufficiently decreased with respect to the set point temperature.

9. The apparatus of claim 1, wherein the processor is further configured to:

(d) obtain a temperature measurement and a relative humidity measurement; and

(e) determine the effective temperature from the temperature measurement and the relative humidity measurement.

10. The apparatus of claim 9, wherein the environmental unit comprises an air flow actuator and wherein the processor is further configured to:

(f) obtain an air speed measurement; and

(g) modify the effective temperature in accordance with the air speed measurement.

11. The apparatus of claim 1, further comprising:

a communications interface that is configured to communicate with a remote sensor; and

wherein the processor is further configured to;

(d) obtain one of the plurality of environmental factors from a remote sensor through the communications interface.

12. The apparatus of claim 11, wherein the communications interface supports a wireless networking protocol.

20. The apparatus of claim 3, wherein the processor is further configured to:

(h) delay a predetermined time duration before activating the heating unit.

21. The apparatus of claim 6, wherein the processor is further configured to perform:

(i) delay a predetermined time duration before activating the cooling unit.

22. The apparatus of claim 7, wherein the processor is further configured to perform:

(i) delay a predetermined time duration before activating the cooling unit.

23. The apparatus of claim 8, wherein the processor is further configured to perform:

(h) delay a predetermined time duration before activating the cooling unit.

13. A computer-readable medium having computer-executable instructions that when executed perform:

(a) obtain a plurality of environmental factors

(b) determine an effective temperature from the plurality of environmental factors; and

(c) when the effective temperature is sufficiently different from a set point temperature, activate an environmental unit to change the effective temperature in accordance with the set point temperature.

14. The computer-readable medium of claim 13, further including computer-executable instructions that when executed perform:

(d) when the effective temperature is sufficiently less than the set point temperature, activate a heating unit, wherein the environmental unit comprises the heating unit.

15. The computer-readable medium of claim 14, further including computer-executable instructions that when executed perform:

(e) determine the effective temperature from a temperature measurement and a humidity measurement, wherein the plurality of environmental factors include the temperature measurement and the relative humidity measurement;

(f) activate the humidifier until the effective temperature is sufficiently increased with respect to the set point temperature or until a measured relative humidity is sufficiently stable; and

(g) when the effective temperature cannot be sufficiently increased by activating the humidifier, activate the heating unit until the effective temperature is sufficiently increased with respect to the set point temperature.

16. The computer-readable medium of claim 13, further including computer-executable instructions that when executed perform:

(d) when the effective temperature is sufficiently greater than the set point temperature, activate a cooling unit and a de-humidifier, wherein the environmental unit comprises the cooling unit and the de-humidifier.

17. The computer-readable medium of claim 16, further including computer-executable instructions that when executed perform:

(e) determine the effective temperature from a temperature measurement, a humidity measurement, and an air speed measurement, wherein the plurality of environmental factors include the temperature measurement, the relative humidity measurement, and the air speed measurement;

(f) activate a fan until the effective temperature is sufficiently decreased with respect to the set point temperature or until the fan reaches a maximum fan speed, wherein the environmental unit comprises the fan;

(g) when the effective temperature cannot be sufficiently decreased by activating the fan, activate the de-humidifier until effective temperature is sufficiently decreased with respect to the set point temperature or until the de-humidifier reaches a maximum de-humidifier speed; and

(h) when the effective temperature cannot be sufficiently decreased by activating the fan and the de-humidifier, activate the air conditioning unit until the effective temperature is sufficiently decreased with respect to the set point temperature.

18. The computer-readable medium of claim 16, further including computer-executable instructions that when executed perform:

(e) determine the effective temperature from a temperature measurement, a humidity measurement, and an air speed measurement, wherein the plurality of environmental factors include the temperature measurement, the relative humidity measurement, and the air speed measurement;

(f) activate the de-humidifier until effective temperature is sufficiently decreased with respect to the set point temperature or until the de-humidifier reaches a maximum de-humidifier speed;

(g) when the effective temperature cannot be sufficiently decreased by activating the de-humidifier, activate a fan until the effective temperature is sufficiently decreased with respect to the set point temperature or until the fan reaches a maximum fan speed, wherein the environmental unit further comprises the fan; and

(h) when the effective temperature cannot be sufficiently decreased by activating the fan and the de-humidifier, activate the cooling until the effective temperature is sufficiently decreased with respect to the set point temperature.

19. The computer-readable medium of claim 16, further including computer-executable instructions that when executed perform:

(e) determine the effective temperature from a temperature measurement, a humidity measurement, and an air speed measurement, wherein the plurality of environmental factors include the temperature measurement, the relative humidity measurement, and the air speed measurement;

(f) activate the de-humidifier and a fan until effective temperature is sufficiently decreased with respect to the set point temperature or until the de-humidifier reaches a maximum de-humidifier speed and the fan reaches a maximum fan speed, wherein the environmental unit further comprises the fan; and

(g) when the effective temperature cannot be sufficiently decreased by activating the fan and the de-humidifier, activate the cooling unit until the effective temperature is sufficiently decreased with respect to the set point temperature.

24. An apparatus comprising:

a wireless communications interface that is configured to communicate with a remote sensor;

a memory;

a processor coupled to the memory and configured to perform;

(a) obtain a temperature measurement and a relative humidity measurement from at least one remote sensor through the wireless communications interface;

(b) determine an effective temperature from the temperature measurement and the relative humidity measurement;

(c) activate a humidifier until the effective temperature is sufficiently increased with respect to a set point temperature or until a measured relative humidity is sufficiently stable; and

(d) when the effective temperature cannot be sufficiently increased by activating the humidifier, activate a heating unit until the effective temperature is sufficiently increased with respect to the set point temperature.

25. An apparatus comprising:

a wireless communications interface that is configured to communicate with a remote sensor;

a memory;

a processor coupled to the memory and configured to perform;

(a) obtain a temperature measurement, a relative humidity measurement, and an air speed measurement from at least one remote sensor through the wireless communications interface;

(b) determine the effective temperature from the temperature measurement, the humidity measurement, and the air speed measurement;

(c) activate a fan until the effective temperature is sufficiently decreased with respect to a set point temperature or until the fan reaches a maximum fan speed;

(d) when the effective temperature cannot be sufficiently decreased by activating the fan, activate a de-humidifier until effective temperature is sufficiently decreased with respect to the set point temperature or until the de-humidifier reaches a maximum de-humidifier speed; and

(e) when the effective temperature cannot be sufficiently decreased by activating the fan and the de-humidifier, activate a cooling unit until the effective temperature is sufficiently decreased with respect to the set point temperature.

26. An apparatus comprising:

a wireless communications interface that is configured to communicate with a remote sensor;

a memory;

a processor coupled to the memory and configured to perform;

(a) obtain a temperature measurement, a relative humidity measurement, and an air speed measurement from at least one remote sensor through the wireless communications interface;

(b) determine the effective temperature from the temperature measurement, the humidity measurement, and the air speed measurement;

(c) activate the de-humidifier until effective temperature is sufficiently decreased with respect to a set point temperature or until the de-humidifier reaches a maximum de-humidifier speed;

(d) when the effective temperature cannot be sufficiently decreased by activating the de-humidifier, activate a fan until the effective temperature is sufficiently decreased with respect to the set point temperature or until the fan reaches a maximum fan speed; and

(e) when the effective temperature cannot be sufficiently decreased by activating the fan and the de-humidifier, activate a cooling unit until the effective temperature is sufficiently decreased with respect to the set point temperature.

27. An apparatus comprising:

a wireless communications interface that is configured to communicate with a remote sensor;

a memory;

a processor coupled to the memory and configured to perform;

(a) obtain a temperature measurement, a relative humidity measurement, and an air speed measurement from at least one remote sensor through the wireless communications interface;

(b) determine the effective temperature from the temperature measurement, the humidity measurement, and the air speed measurement;

(c) activate a de-humidifier and a fan until effective temperature is sufficiently decreased with respect to a set point temperature or until the de-humidifier reaches a maximum de-humidifier speed and the fan reaches a maximum fan speed; and

(e) when the effective temperature cannot be sufficiently decreased by activating the fan and the de-humidifier, activate a cooling unit until the effective temperature is sufficiently decreased with respect to the set point temperature.