System and method for providing self-locating wireless sensors

• US 9,500,736 B2
• Filed: 07/31/2008
• Issued: 11/22/2016
• Est. Priority Date: 07/31/2008
• Status: Active Grant

• Current Assignee: Honeywell International Inc.
• Original Assignee: Honeywell International Inc.
• Inventors: Becker, Jeffrey M.
• Primary Examiner(s): ALAM, MIRZA F
• Application Number:
  US12/183,263
• Publication Number:
  US 20100026514A1
• Time in Patent Office: 3,036 Days
• Field of Search: 340/539.15, 340/572.1, 340/539.32, 340/539.13, 340/539.18, 340/10.2, 340/539.1, 340/531, 340/573.1, 340/573.3, 340/573.4, 340/10.3, 340/10.32, 340/10.1, 340/870.01, 455/456.5, 455/456.1, 455/456.2, 455/456.3, 455/456.4, 455/404.2, 455/11.1, 455/12.1, 455/13.1, 455/13.4, 370/314, 370/442, 370/310, 370/310.2, 370/395.52, 370/428, 370/521, 370317-319, 370/324, 370/328, 370351-356, 370/389
• US Class Current: 1/1
• CPC Class Codes: G01D 21/00 Measuring or testing not otherwise provided for
• CPC Class Codes: G01S 19/38 Determining a navigation solution using signals transmitted by a satellite radio beacon positioning system
• CPC Class Codes: G01S 5/0027 of actual mobile position, i.e. position determined on mobile
• CPC Class Codes: G01S 5/017 Detecting state or type of motion
• CPC Class Codes: H04W 24/00 Supervisory, monitoring or testing arrangements

Abstract

A wireless sensor network is disclosed that comprises a plurality of wireless sensors and a wireless sensor base station. The wireless sensor base station sends a request to one of the wireless sensors requesting the location information for the selected wireless sensor. The wireless sensor determines its location using a location information determination method, associates its identity information with the location information, and sends the identity information and the location information to the wireless sensor base station. The wireless sensor continuously sends updated location information to the wireless sensor base station as the wireless sensor moves within the wireless sensor network. The wireless sensor base station displays the identity information and the location information of the wireless sensor on a display unit.

Claims

1. A wireless sensor comprising:

a wireless sensor location controller configured to;

determine a location of the wireless sensor,

detect a geographic boundary,

detect movement of the wireless sensor, and

control a wireless transceiver to wirelessly transmit a signal comprising location information of the wireless sensor in response to (i) detecting the movement of the wireless sensor and (ii) determining that the wireless sensor has passed the geographic boundary,

wherein the wireless sensor location controller is further configured to determine a velocity of the wireless sensor in response to detecting the movement of the wireless sensor and control the wireless transceiver to wirelessly transmit the signal in response to determining that the velocity of the wireless sensor is greater than a threshold velocity.

2. The wireless sensor as set forth in claim 1, wherein the wireless sensor location controller is configured to determine the location of the wireless sensor in response to a request from a wireless sensor base station.

3. The wireless sensor as set forth in claim 1, wherein the wireless sensor location controller is further configured to include identity information of the wireless sensor in association with the location information of the wireless sensor in the signal.

4. The wireless sensor as set forth in claim 1, wherein:

the wireless sensor location controller is configured to determine the location of the wireless sensor in response to a request from a wireless sensor base station; and

the wireless sensor location controller is further configured to include identity information of the wireless sensor in association with the location information of the wireless sensor in the signal.

5. The wireless sensor as set forth in claim 1, wherein the wireless sensor location controller is further configured to provide the location information of the wireless sensor to an external wireless device.

6. The wireless sensor as set forth in claim 1, wherein the wireless sensor location controller is configured to determine the location of the wireless sensor using one of:

global positioning system (GPS) technology, time difference of arrival (TDOA) signal measurement technology, angle of arrival (AOA) signal measurement technology, and signal strength measurements of one of;

a signal that is transmitted by the wireless sensor and a signal that is received by the wireless sensor.

7. The wireless sensor as set forth in claim 1, wherein the wireless sensor location controller is configured to generate the signal as a beacon signal that uniquely identifies the wireless sensor.

8. The wireless sensor as set forth in claim 1, wherein the wireless sensor location controller is configured to generate the signal as an alert signal that signifies an event of interest has occurred with respect to the wireless sensor.

9. A wireless sensor network comprising:

at least one wireless sensor comprising a wireless sensor location controller and a wireless transceiver, the wireless sensor location controller configured to;

determine a location of the at least one wireless sensor,

detect a geographic boundary,

detect movement of the at least one wireless sensor, and

control the wireless transceiver to wirelessly transmit a signal comprising location information of the at least one wireless sensor in response to (i) detecting the movement of the at least one wireless sensor and (ii) determining that the at least one wireless sensor has passed the geographic boundary,

wherein the wireless sensor location controller is further configured to determine a velocity of the at least one wireless sensor in response to detecting the movement of the at least one wireless sensor and control the wireless transceiver to wirelessly transmit the signal in response to determining that the velocity of the at least one wireless sensor is greater than a threshold velocity; and

a wireless sensor base station configured to communicate with the at least one wireless sensor.

10. The wireless sensor network as set forth in claim 9, wherein the wireless sensor location controller is configured to determine the location of the at least one wireless sensor in response to receiving a request from the wireless sensor base station.

11. The wireless sensor network as set forth in claim 9, wherein:

the wireless sensor location controller is configured to determine the location of the at least one wireless sensor in response to a request from the wireless sensor base station; and

the wireless sensor location controller is further configured to include identity information of the at least one wireless sensor in association with the location information of the at least one wireless sensor in the signal.

12. The wireless sensor network as set forth in claim 9, wherein the wireless sensor location controller is configured to determine the location of the at least one wireless sensor using one of:

global positioning system (GPS) technology, time difference of arrival (TDOA) signal measurement technology, angle of arrival (AOA) signal measurement technology, and signal strength measurements of one of;

a signal that is transmitted by the at least one wireless sensor and a signal that is received by the at least one wireless sensor.

13. The wireless sensor network as set forth in claim 9, wherein the wireless sensor base station comprises a second wireless sensor location controller and a database including location information for each wireless sensor in the wireless sensor network.

14. The wireless sensor network as set forth in claim 9, wherein the wireless sensor base station comprises a second wireless sensor location controller configured to display, on a display unit of the wireless sensor base station, location information for each wireless sensor in the wireless sensor network and to verify an installation location for each wireless sensor in the wireless sensor network based on the location information.

15. A wireless sensor network that comprises:

at least one wireless sensor;

a wireless transceiver; and

a wireless sensor location controller configured to;

determine a location of the at least one wireless sensor,

detect a geographic boundary,

detect movement of the at least one wireless sensor, and

control the wireless transceiver to wirelessly transmit a signal comprising location information of the at least one wireless sensor in response to (i) detecting the movement of the at least one wireless sensor and (ii) determining that the at least one wireless sensor has passed the geographic boundary,

wherein the wireless sensor location controller is further configured to determine a velocity of the at least one wireless sensor in response to detecting the movement of the at least one wireless sensor and control the wireless transceiver to wirelessly transmit the signal in response to determining that the velocity of the at least one wireless sensor is greater than a threshold velocity.

16. The wireless sensor network as set forth in claim 15, wherein the wireless sensor location controller is configured to determine the location of the at least one wireless sensor using one of:

global positioning system (GPS) technology, time difference of arrival (TDOA) signal measurement technology, angle of arrival (AOA) signal measurement technology, and signal strength measurements of one of;

a signal that is transmitted by the at least one wireless sensor and a signal that is received by the at least one wireless sensor.

17. The wireless sensor network as set forth in claim 16, wherein the wireless sensor network is a multi-tier wireless sensor network that comprises a plurality of multi-tier wireless network elements.

24. The wireless sensor network as set forth in claim 15, wherein:

the wireless sensor location controller is configured to determine the location of the at least one wireless sensor in response to a request from a wireless sensor base station; and

the wireless sensor location controller is further configured to include identity information of the at least one wireless sensor in association with the location information of the at least one wireless sensor in the signal.

18. A method for operating a wireless sensor network, the method comprising:

providing at least one wireless sensor comprising a wireless sensor location controller;

determining a location of the at least one wireless sensor;

detecting a geographic boundary;

detecting movement of the at least one wireless sensor;

determining a velocity of the at least one wireless sensor in response to detecting the movement of the at least one wireless sensor;

in response to (i) detecting the movement of the at least one wireless sensor and (ii) determining that the at least one wireless sensor has passed the geographic boundary, transmitting a signal comprising location information of the at least one wireless sensor for delivery to a wireless sensor base station; and

in response to determining that the velocity of the at least one wireless sensor is greater than a threshold velocity, wirelessly transmitting the signal.

19. The method as set forth in claim 18, further comprising:

receiving a request from the wireless sensor base station at the at least one wireless sensor to obtain the location information of the at least one wireless sensor;

in response to the request from the wireless sensor base station, determining the location of the at least one wireless sensor; and

transmitting the location information of the at least one wireless sensor for delivery to the wireless sensor base station.

20. The method as set forth in claim 18, wherein determining the location of the at least one wireless sensor comprises:

determining the location of the at least one wireless sensor using one of;

global positioning system (GPS) technology, time difference of arrival (TDOA) signal measurement technology, angle of arrival (AOA) signal measurement technology, and signal strength measurements of one of;

a signal that is transmitted by the at least one wireless sensor and a signal that is received by the at least one wireless sensor.

21. The method as set forth in claim 18, further comprising:

in response to determining that the velocity of the at least one wireless sensor is greater than the threshold velocity, determining new location information of the at least one wireless sensor; and

transmitting the new location information of the at least one wireless sensor for delivery to the wireless sensor base station.

22. The method as set forth in claim 18, further comprising:

in response to an occurrence of an event of interest with respect to the at least one wireless sensor, generating an alert signal in the wireless sensor location controller of the at least one wireless sensor; and

transmitting the alert signal for delivery to the wireless sensor base station.

23. The method as set forth in claim 18, further comprising:

sending the location information for the at least one wireless sensor to the wireless sensor base station;

recording the location information of the at least one wireless sensor in a database in the wireless sensor base station; and

displaying the location information of the at least one wireless sensor on a display unit of the wireless sensor base station.