System and apparatus for integrated wireless location detection

• US 8,265,651 B2
• Filed: 07/17/2007
• Issued: 09/11/2012
• Est. Priority Date: 07/17/2007
• Status: Active Grant

• Current Assignee: Honeywell International Inc.
• Original Assignee: Honeywell International Inc.
• Inventors: Amidi, Soroush
• Primary Examiner(s): Bhattacharya, Sam
• Application Number:
  US11/879,543
• Publication Number:
  US 20090021390A1
• Time in Patent Office: 1,883 Days
• Field of Search: 455/418, 455/456.1, 455/456.4, 340/572.4, 340/825.49
• US Class Current: 455/456.1
• CPC Class Codes: G01S 5/0009 Transmission of position information to remote stations involving assistance data G01S5/0236
• CPC Class Codes: G01S 5/011 Identifying the radio environment

Abstract

An apparatus, system and method are provided for integrated wireless location detection. The system includes a location detection (LD) transmitter that transmits first and second radio frequency signals in first and second formats, respectively. First and second LD receivers, respectively, receive the first and second signals and determine first and second information relating to a location of the LD transmitter. An LD server wirelessly receives the first and second information and calculates the location of the LD transmitter from one of the first and second information. The LD server may receive a signal indicating a preferred one of the first and second information and calculate the location from the preferred one of the first and second information.

Claims

1. A system comprising:

a location detection (LD) transmitter configured to transmit a first radio frequency (RF) signal in a first protocol and a second RF signal in a second protocol;

a first LD receiver configured to;

receive the first RF signal from the LD transmitter; and

determine from the first RF signal first information relating to a location of the LD transmitter;

a second LD receiver configured to;

receive the second RF signal from the LD transmitter; and

determine from the second RF signal second information relating to the location of the LD transmitter; and

an LD server configured to;

receive the first information and the second information wirelessly from the first LD receiver and the second LD receiver, respectively;

receive, from an industrial process control system, an identification of a preferred one of the first information and the second information; and

calculate the location of the LD transmitter from the preferred one of the first information and the second information.

2. The system of claim 1, wherein:

the first protocol is a WiFi protocol; and

the second protocol is selected to improve an accuracy in calculating the location of the LD transmitter.

3. The system of claim 1, wherein the LD server is further configured to calculate the location of the LD transmitter from another one of the first information and the second information in response to a failure to receive the preferred one of the first information and the second information.

4. The system of claim 1, wherein:

the LD transmitter is further configured to transmit an identifier in at least one of the first RF signal and the second RF signal; and

the LD server is further configured to;

receive the identifier from at least one of the first LD receiver and the second LD receiver; and

in response to the identifier, calculate the location of the LD transmitter.

5. The system of claim 4, wherein the LD server is further configured to calculate the location of the LD transmitter from another one of the first information and the second information in response to a failure to receive the preferred one of the first information and the second information.

6. The system of claim 1, wherein the LD server is further configured to receive the first information and the second information wirelessly via a plurality of intermediate nodes.

7. The system of claim 1, wherein:

the first protocol is a WiFi protocol; and

the second protocol is an Ultra Wide Band protocol.

8. An apparatus comprising:

a network interface; and

a location calculator configured to;

receive via the network interface first information from a first location detection (LD) receiver, the first information relating to a location of an LD transmitter and determined from a firs_t radio frequency (RF) signal in a first protocol received from the LD transmitter;

receive via the network interface second information from a second LD receiver, the second information relating to the location of the LD transmitter and determined from a second RF signal in a second protocol received from the LD transmitter;

receive, from an industrial process control system, an identification of a preferred one of the first information and the second information for the LD transmitter; and

calculate the location of the LD transmitter from the preferred one of the first information and the second information.

9. The apparatus of claim 8, wherein:

the first protocol is a WiFi protocol; and

the second protocol is selected to improve an accuracy in calculating the location of the LD transmitter.

10. The apparatus of claim 8, wherein the location calculator is further configured to calculate the location of the LD transmitter from another one of the first information and the second information in response to a failure to receive the preferred one of the first information and the second information.

11. The apparatus of claim 8, wherein the location calculator is further configured to:

receive an identifier of the LD transmitter from at least one of the first LD receiver and the second LD receiver; and

in response to the identifier, calculate the location of the LD transmitter.

12. The apparatus of claim 11, wherein the location calculator is further configured to calculate the location of the LD transmitter from another one of the first information and the second information in response to a failure to receive the preferred one of the first information and the second information.

13. The apparatus of claim 8, wherein:

the first protocol is a WiFi protocol; and

the second protocol is an Ultra Wide Band protocol.

14. A method comprising:

transmitting a first radio frequency (RF) signal in a first protocol from a location detection (LD) transmitter;

transmitting a second RF signal in a second protocol from the LD transmitter;

receiving the first RF signal in a first LD receiver and determining from the first RF signal first information relating to a location of the LD transmitter;

receiving the second RF signal in a second LD receiver and determining from the second RF signal second information relating to the location of the LD transmitter;

receiving the first information and the second information in an LD server;

receiving, from an industrial process control system, an identification of a preferred one of the first information and second information receive; and

calculating the location of the LD transmitter at the LD server from the preferred one of the first information and the second information.

15. The method of claim 14, wherein:

the first protocol is a WiFi protocol; and

the second protocol is selected to improve an accuracy in calculating the location of the LD transmitter.

16. The method of claim 14, further comprising:

calculating the location of the LD transmitter from another one of the first information and the second information in response to a failure to receive the preferred one of the first information and the second information.

17. The method of claim 14, further comprising:

transmitting an identifier in at least one of the first RF signal and the second RF signal;

receiving in the LD server the identifier from at least one of the first LD receiver and second LD receiver; and

in response to the identifier, calculating the location of the LD transmitter.

18. The method of claim 17, further comprising:

calculating the location of the LD transmitter from another one of the first information and the second information in response to a failure to receive the preferred one of the first information and the second information.

19. The method of claim 14, wherein receiving the first information and the second information wirelessly in the LD server further comprises receiving the first information and the second information via a plurality of intermediate nodes.

20. The method of claim 14, wherein:

the first protocol is a WiFi protocol; and

the second protocol is an Ultra Wide Band protocol.