Adjusting a communications channel between control unit and remote sensor

• US 7,764,171 B2
• Filed: 09/24/2007
• Issued: 07/27/2010
• Est. Priority Date: 09/24/2007
• Status: Active Grant

• Current Assignee: Computime Electronics Company Limited
• Original Assignee: Computime Electronics Company Limited
• Inventors: Cheng, Chung Ming, Chan, Ho Sin Vincent
• Primary Examiner(s): TWEEL JR, JOHN ALEXANDER
• Application Number:
  US11/860,154
• Publication Number:
  US 20090079577A1
• Time in Patent Office: 1,037 Days
• Field of Search: 340/539.26, 340/539.27, 340/539.1, 455/63.4
• US Class Current: 340/539.26
• CPC Class Codes: H04B 17/23 Indication means, e.g. displays, alarms, audible means
• CPC Class Codes: H04B 17/318 Received signal strength

Abstract

The present invention provides apparatuses and systems for adjusting a communication channel between a control unit and a remote sensor. A system may include a control unit that controls an environmental unit and a remote sensor that provides data about an environmental factor as measured at the remote sensor. The remote sensor transmits a radio frequency (RF) signal that conveys the data to control unit through a directional antenna. The RF signal is received by the control unit through an omnidirectional antenna, and a signal strength parameter is determined from the received RF signal. A signal strength indication unit provides an indication from the signal strength parameter as a user adjusts the position of the directional antenna. With embodiments of the invention, a signal strength module generates an audio signal in accordance with an audio characteristic, which is indicative of the signal strength of the received RF signal.

Claims

1. A system comprising:

a control unit configured to control an environmental unit, the environmental unit affecting an environmental factor, the control unit including;

a first antenna;

a receiving module configured to receive a received radio frequency (RF) signal from a first remote sensor through the first antenna;

a signal measurement module configured to determine a signal strength parameter, the signal strength parameter being indicative of a signal strength of the received RF signal; and

a signal strength indication unit configured to provide an indication from the signal strength parameter;

the first remote sensor positioned at a first location, the first remote sensor including;

a second antenna;

a transmitting module configured to convey a first datum in a first transmitted RF signal through the second antenna to the control unit about the environmental factor that is measured at the first location; and

an adjustable component configured to alter a position of the second antenna; and

the signal strength parameter being indicative of an optimum positioning of the second antenna.

2. The system of claim 1, the control unit comprising a thermostat unit and the environmental factor being indicative of temperature.

3. The system of claim 1, wherein the environmental factor is indicative of humidity.

4. The system of claim 1, wherein the environmental factor is indicative of air quality.

5. The system of claim 1 further comprising:

an audio characterization module configured to determine an audio characteristic of an audio signal that is indicative of the signal strength parameter; and

an audio generator configured to generate the audio signal in accordance with the audio characteristic.

6. The system of claim 1 further comprising:

a visual display configured to provide a visual indication of the signal strength indicator.

7. The system of claim 1, further comprising:

a pivoting component configured to alter the position of the second antenna responsive to an external force.

8. The system of claim 7, the pivoting component including a pivoting axis.

9. The system of claim 8, the pivoting component further including:

a retaining protrusion; and

a plurality of retaining receptacles, the retaining protrusion fitting into one of the plurality of retaining receptacles to alter the position of the second antenna.

10. The system of claim 1, the first antenna comprising an omnidirectional antenna and the second antenna comprising a directional antenna.

11. The system of claim 1, further comprising:

a second remote sensor positioned at a second location, the second remote sensor including;

a third antenna; and

a second transmitting module configured to convey a second datum in a second transmitted RF signal through the third antenna to the control unit about the environmental factor that is measured at the second location.

12. The system of claim 11, the first remote sensor further including a first activation module configured to activate or deactivate the first remote sensor and the second remote sensor including a second activation module configured to activate or deactivate the second remote sensor.

13. The system of claim 12, the first activation module and the second activation module further configured to select a test mode or a normal mode of operation.

14. The system of claim 1, the receiving module further configured to select a test mode or a normal mode and to provide the indication only when operating in the test mode.

15. The system of claim 14, the receiving module further configured to select the test mode when a test message is received.

27. The system of claim 1, further comprising:

another remote sensor positioned at another position, the other remote sensor including;

another antenna;

another transmitting module configured to convey another datum in another transmitted RF signal through the other antenna to the control unit about the environmental factor that is measured at the other location; and

another adjustable component configured to position the other antenna; and

the signal strength parameter being indicative of an optimum positioning of the other antenna, wherein the signal strength parameter is determined by the signal measurement module at the control unit.

16. An apparatus comprising:

a control unit configured to control a temperature control system in accordance with a desired temperature and a measured temperature;

a first antenna having a fixed position;

a receiving module configured to receive a received radio frequency (RF) signal from a first remote sensor through the first antenna, the received RF signal conveying information about the measured temperature;

a signal measurement module configured to determine a signal strength parameter, the signal strength parameter being indicative of a signal strength of the received RF signal and indicative of an optimum positioning of a transmitting source of the received RF signal; and

an audio generator configured to provide an audio indication from the signal strength parameter.

17. The apparatus of claim 16, further comprising:

an audio characterization module configured to determine an audio characteristic of an audio signal to provide the audio indication.

18. The apparatus of claim 17, the audio characterization module configured to determine a frequency of the audio signal in accordance with the signal strength parameter.

19. The apparatus of claim 17, the audio characterization module configured to determine a number of audio tones in a sequence.

20. The apparatus of claim 17, the audio characterization module configured to determine a frequency of audio tones.

21. An apparatus comprising:

a measurement module configured to determine a measured temperature at a location;

a directional antenna;

a transmitting module configured to convey information in a radio frequency (RF) signal through the antenna to a thermostat unit about the measured temperature to a control unit; and

a pivoting component configured to alter a position of the antenna in response to an external force to obtain a desired signal performance at the control unit.

22. The apparatus of claim 21, the pivoting component including a pivoting axis.

23. The apparatus of claim 22, the pivoting component further including:

a retaining protrusion; and

a plurality of retaining receptacles, the retaining protrusion fitting into one of the plurality of retaining receptacles to alter the position of the second antenna.

24. The apparatus of claim 22, the directional antenna comprising a patch antenna.

25. The apparatus of claim 22, the directional antenna comprising a microstrip antenna.

26. The apparatus of claim 21 further comprising:

a configuration module being capable of configuring the apparatus in a test mode or normal mode; and

the transmitter module configured to insert a test indicator in a transmitted message only when the apparatus is in the test mode.