Sensor instrument system including method for detecting analytes in fluids

Abstract

A sensor instrument system and a method for detecting and identifying analytes in fluids of a region comprising a local sensor instrument and remote central station are disclosed. The instrument is comprised of a core technology employing a single sensor having two electrodes operated by an electrical frequency sweeping to generate two sets of patterned electrical information from a single measurement, a data transmission module and a GPS receiver module. The central station connects to a network means connected to a plurality of local receiving sites equipped with including the respective transceivers, so that the local analyte electrical information and geographic position information transmitted by the instrument can be wirelessly and remotely received and processed by the central station. The core technology is further comprised of a reference sensor for eliminating background influence, a temperature programming to control adsorption and desorption of analytes, and usage of all kinds of adsorbent materials having chemical selectivity including the hydrogen selectivity to enhance detection and identification of analytes in fluids.

Description

[0001] Patent application documents related to this application [0002] The present application is a continuation of US Application Serial No. 10 / 238,794; now US Patent No. 7,465,425, filed September 9, 2002, with new structures added. field of invention [0003] The invention relates to the field of sensor instruments, in particular to sensor instrument systems and methods for detecting analytes in fluids. Background technique [0004] Sensor instruments are widely used to detect analytes in fluids. The following are references related to the technology of the present invention. [0005] 1. U.S. Patent No. 4,887,455 entitled "Gas Sensor" granted to Payne et al. on December 9, 1989 (hereinafter referred to as Payne's '455 patent); [0006] 2. U.S. Patent No. 5,571,401 granted to Lewis on November 5, 1996, et al., entitled "Sensor Group for Detecting Analytes in Fluids" (hereinafter Lewis' 571 patent); [0007] 3. US Patent No. 6,314,724 was granted to Lewis et al. on No...

AI Technical Summary

Problems solved by technology

Although sensor research along this scheme has made great strides in the past, it still has the disadvantages of using multi-sensor schemes

These disadvantages include: a large number of sensors are required to generate the type-differentiated information map of the analyte; the complex structure of the sensor leads to inconsistency in the production of the sensor; Humidity interference; slow sensitivity; necessary expensive instruments and severely restricted operating conditions

Second, the polymer film material has an aging effect, which affects the long-term stability of the sensor

Third, it is also a difficult problem to obtain the repeatability of the polymer material film placed on the sensor in production

However, the electric resonance phenomenon of Pena's device must be in the frequency range of 100 megacycles to 500 megacycles to be possible

This high frequency limitation brings great difficulties to the production and use of the instrument

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