US 7,509,008 B2
Method and apparatus for locating a localized temperature change in a workspace
Kenneth Perales, Rosenberg, Tex. (US); and Daniel J. Mullins, Charleston, W. Va. (US)
Assigned to Halliburton Energy Services, Inc., Houston, Tex. (US)
Filed on Oct. 06, 2006, as Appl. No. 11/539,245.
Prior Publication US 2008/0084913 A1, Apr. 10, 2008
Int. Cl. G02B 6/00 (2006.01); G01J 5/08 (2006.01); G01K 11/00 (2006.01)
U.S. Cl. 385—100  [385/12; 385/13; 374/131; 374/137; 374/161] 22 Claims
OG exemplary drawing
 
1. A method for monitoring a workspace configured to comprise at least one worker, the method comprising deploying a fiber optic distributed temperature sensor cable in the workspace,
wherein the sensor is configured to detect a change in temperature associated with the worker at any point along its length, and
wherein the sensor is configured to detect a temperature differential of ±10° F. from baseline, thereby locating the worker within the workspace without action from the worker.