A Study &amp; Real Time Monitoring of Metal Oxide Semiconductor (MOS) Gas Sensor

Beniwal, Ajay

doi:10.9790/2834-150100712

Cited by 5 publications

(1 citation statement)

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“…There are various types of materials, organic polymers/ biopolymers and inorganic materials like ionic conductors/ semiconductor that can detect the analytes of interest. Generally, for the detection of gases/vapors, semiconductor metal oxide sensors are widely employed [5,6]. The metal oxide sensor works on the principle of chemoresistance [7].…”

Section: Introductionmentioning

confidence: 99%

Development of instrumentation setup for discrimination of analytes using principal component analysis

Keshari¹,

Rao²,

Murthy³

et al. 2019

Eng. Res. Express

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An indigenous instrumentation set up was designed and developed for the discrimination of analytes. The instrumentation consists of a sensor array, measurement unit, data acquisition software, and a pattern recognition tool. The conductivity changes of three metal oxide sensors (ZnO (S1), In 2 O 3 (S2) and SnO 2 (S3)) with different analytes (hydrogen (A1), formaldehyde (A2) and hydrazine (A3)) were measured using in-house developed instrumentation and is sent to PC to store the sensor data for discrimination of analytes using pattern recognition technique. The data acquisition software collects the data in PC to train the data for discrimination of analytes using pattern recognition tool in real time. The various features of sensor response were derived from the response curve and the Principal Component Analysis (PCA) algorithm was implemented in software to extract the information from sensor response data for discrimination of analytes. The instrument set up is able to distinguish among hydrogen, formaldehyde, and hydrazine in real time.

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Section: Introductionmentioning

confidence: 99%