Application of microsystems for comfort control

• US 7,854,389 B2
• Filed: 08/30/2006
• Issued: 12/21/2010
• Est. Priority Date: 08/30/2005
• Status: Active Grant

• Current Assignee: Siemens Industry Incorporated (Siemens AG)
• Original Assignee: Siemens Industry Incorporated (Siemens AG)
• Inventors: Ahmed, Osman
• Primary Examiner(s): JIANG, CHEN WEN
• Application Number:
  US11/512,751
• Publication Number:
  US 20070084937A1
• Time in Patent Office: 1,574 Days
• Field of Search: 236/44.C, 236/51, 236/94, 621/766, 700/276, 700/277, 700/278
• US Class Current: 236/44.00C
• CPC Class Codes: F24F 11/0008 for air-humidification F24F11/30 takes precedence
• 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 11/46 Improving electric energy efficiency or saving
• 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 11/63 Electronic processing
• CPC Class Codes: F24F 11/76 by means responsive to temperature, e.g. bimetal springs
• CPC Class Codes: F24F 2110/10 Temperature
• CPC Class Codes: F24F 2110/20 Humidity
• CPC Class Codes: F24F 2120/20 Feedback from users
• CPC Class Codes: G05B 15/02 electric

Abstract

An arrangement includes a plurality of wireless microsystems. Each microsystem is operable to measure at least relative humidity and temperature, and to communicate temperature and relative humidity information wirelessly to a network device. The network device is operable to communicate the temperature and relative humidity information to at least a first processor configured to cause a change in a building control condition based on the information.

Claims

1. An arrangement comprising:

a plurality of wireless microsystems, each microsystem operable to measure at least relative humidity and temperature, and to communicate temperature and relative humidity information indicative of the measured relative humidity and temperature wirelessly to a network device, the network device operable to communicate the temperature and relative humidity information to at least a first processor configured to;

a) obtain a comfort level value based on the measurements of relative humidity and temperature,

b) determine if the comfort level value is within a first predefined range,

c) cause a first change in at least one building control parameter if the comfort level is outside the first predefined range,

d) determine if the comfort level value is within a second range, and

e) cause a second change in the at least one building control parameter if the comfort level is within the second range and within the first predefined range.

2. The arrangement of claim 1, wherein the processor is further operable to cause the change based upon the information, the information represented as a two-dimensional vector quantity.

3. The arrangement of claim 1, wherein the processor is further operable to cause the change based upon the information, the information represented as a value representative of a combined relative humidity and temperature index.

4. The arrangement of claim 1, wherein the processor is further operable to cause the change by causing a building control device to adjust the air flow within a space of a building.

5. The arrangement of claim 1, wherein the network device is configured to communicate the temperature and relative humidity information using a communication network.

6. The arrangement of claim 1, wherein the network device and the one or more controllers are part of a field controller panel.

7. The arrangement of claim 1, wherein the microsystem includes a plurality of MEMs sensors.

8. An arrangement comprising:

a plurality of wireless microsystems, each microsystem operable to measure at least relative humidity and temperature, to generate a combined temperature and relative humidity index, and to transmit the index wirelessly;

a wireless device operably configured to receive the transmitted index from at least one microsystem and to provide as an output information corresponding to the received index;

a controller operably coupled to receive the information corresponding to the index from the wireless device, the controller operable to;

(a) determine if the information corresponding to the index is within a first predefined range,

(b) cause a first change in at least one building control parameter if the information corresponding to the index is outside the first predefined range,

(c) determine if the information corresponding to the index is within a second range, and

(d) cause a second change in the at least one building control parameter if the information corresponding to the index is within the second range and within the first predefined range.

9. The arrangement of claim 8, wherein the index includes a vector including relative humidity and temperature information.

10. The arrangement of claim 8, wherein the index includes a single value representative of a combined relative humidity and temperature index.

11. The arrangement of claim 8, wherein the information corresponding to the received index is the received index.

12. The arrangement of claim 8, wherein the wireless device is coupled to the controller via a wired communication network.

13. The arrangement of claim 8, wherein the wireless network device is co-located with the controller.

14. The arrangement of claim 8, wherein the building control condition constitutes an air flow into at least a first space.

15. The arrangement of claim 8, wherein the building control condition constitutes a supply air parameter, the supply air provided to a plurality of spaces in a building.

16. The arrangement of claim 8, wherein the microsystem includes a plurality of MEMs sensors.

17. A method, comprising:

a) measuring a relative humidity and temperature of a space using at least one wireless microsystem;

b) obtaining a comfort level value based on the measurements of humidity and temperature in the space;

c) transmitting the comfort level value wirelessly to a controller;

d) determining if the comfort level value is within a first predefined range;

e) causing a first change in at least one building control parameter if the comfort level is outside the predefined range;

f) determining if the comfort level value is within a second range; and

g) causing a second change in the at least one building control parameter if the comfort level is within the second range and within the first predefined range.

18. The method of claim 17, wherein step b) further comprises obtaining the comfort level value in the form of a multidimensional vector.

19. The method of claim 18, wherein step d) further comprises determining if the comfort level value is within the first predefined range by determining if the multidimensional vector falls within a comfort zone, the comfort zone forming a multidimensional space.

20. The method of claim 19, wherein the multidimensional vector is a vector (t, rh), where t is representative of temperature and rh is representative of relative humidity, and wherein the multidimensional space is a two-dimensional shaped space.

21. The method of claim 20, wherein the two-dimensional space of the comfort zone is defined by a perimeter, and wherein step f) further comprises determining if the vector (t, rh) is more than a predetermined distance from the perimeter.

22. The method of claim 17, wherein step b) further comprises obtaining the comfort level value in the form of a scalar value.

23. The method of claim 22, wherein step d) further comprises comparing the comfort level value to a first threshold.

24. The method of claim 23, wherein step f) further comprises comparing the comfort level value to a second threshold.