Patent ID: 7471185
Filing Date: 2008-12-30
Classification: G01N,H01B,H01C

Abstract:
1. A system for detecting an analyte in a fluid, said system comprising: a sensor array comprising first and second sensors wherein said first sensor comprises a region of aligned conductive material which provides a response in the presence of said analyte; an electrical measuring device electrically connected to the sensor array; and a computer comprising a resident algorithm; the electrical measuring device detecting the response and the computer assembling the response into a sensor array response profile, wherein said first and said second sensors are first and second chemically sensitive resistors, each chemically sensitive resistor comprising a plurality of alternating regions comprising a nonconductive region and an aligned conductive region that is compositionally different than said nonconductive region wherein, each resistor provides an electrical path through said nonconductive region and said aligned conductive region, a first electrical resistance when contacted with a first fluid comprising an analyte at a first concentration and a second different electrical resistance when contacted with a second fluid comprising said analyte at a second different concentration wherein, the difference between said first electrical resistance and said second electrical resistance of said first chemically sensitive resistor being different from the difference between said first electrical resistance and said second electrical resistance of said second chemically sensitive resistor under the same conditions; and the electrical measuring device detecting the first and said second electrical resistances in each of said chemically sensitive resistors and the computer assembling the resistances into a sensor array response profile.