초록 ▼

In apparatus for detecting or identifying gas or liquid or for measuring their concentration, an array of sensors arranged for simultaneous exposure to a substance is coupled to electrical circuitry arranged to generate electrical signal values which are linearly related to substance concentration.

In apparatus for detecting or identifying gas or liquid or for measuring their concentration, an array of sensors arranged for simultaneous exposure to a substance is coupled to electrical circuitry arranged to generate electrical signal values which are linearly related to substance concentration. The sensors are selected to respond differently to a known sample substance or substances. By feeding the signal values to a processor programmed to combine the signal value in a series of linear equations, a series of output values are obtained which are characteristic of the sensed substance or substances which, when compared with stored data allow identification of the sensed substance or substances and the measurement of substance concentration.

대표청구항 ▼

Apparatus for identifying, detecting or measuring gas or liquid borne substances, comprising: a plurality of sensors arranged for simultaneous exposure to a sample to be analyzed, and electrical circuit means associated with the sensors and arranged to compensate for non-linear output versus substan

Apparatus for identifying, detecting or measuring gas or liquid borne substances, comprising: a plurality of sensors arranged for simultaneous exposure to a sample to be analyzed, and electrical circuit means associated with the sensors and arranged to compensate for non-linear output versus substance concentration characteristics of the sensors, whereby each sensor, in combination with the circuit means, is operable to generate an electrical signal having a characteristic which is linearly related to the concentrations of a plurality of substances sensed by said each sensor, the circuit means including means for processing said electrical signals from said plurality of sensors to produce an electrical output indicative of an identity of the sample to be analyzed sensed by the sensors or of the presence and/or concentration of a particular substance or substances within said sample to be analyzed.