Patent ID: 7941288

Claim:
A method for mitigating desensitization of a first sensor in a chemical agent detection system comprising a plurality of sensors, including at least one first sensor operative to adjust its baseline to compensate for changes in ambient levels of a chemical agent and at least one second sensor not operative to so compensate, said method comprising: determining a first sensor prior baseline and a second sensor prior baseline; exposing the chemical agent detection system, including the first and second sensors, to an environment that may contain the chemical agent for sensing by the at least one first and second sensors; adjusting the first sensor to a second baseline compensating for changes in ambient levels of the chemical agent; indicating by the second sensor the presence of the chemical agent, wherein the first sensor does not indicate the presence of the chemical agent at the second baseline; upon indication by the second sensor of the presence of the chemical agent, feeding this indication through a feedback mechanism to the at least one first sensor; and adjusting the first sensor back to the first sensor prior baseline to mitigate false desensitization of the at least one first sensor.