Semiconductor gas sensors are widespread in application, e.g. for the detection of methane in city gas or carbon monoxide from incomplete combustion [1]. Due to the involved chemistry a sensor element does not react to just one gas component, but with different sensitivities to different gas components. Sensor elements prepared with different additives and different operating temperatures respo...

An in situ measurement of micro-friction torque in MEMS gas bearings, which has been a challenging research topic for years, is realized by a system designed in this paper. In the system, a high accuracy micro-force sensor and an electronically-driven table are designed, fabricated and utilized. With appropriate installation of the sensor and bearings on the table, the engine rotor can be drive...

PIC microcontroller & PC based gas sensing system is presented in this project. The analysis presented here depends on thin film metal oxide gas sensors TGS 822, TGS 813, TGS 2600, MQ6 and MQ7. The differences in the steady state performance among their sensors are used for improving their selectivity and sensitivity, while the combination of gas sensors permits success in gas classification pr...

Gas leakage detection and monitoring through wireless sensor network is considered to be more economical for industries gas leakage. Main purpose of this system model is to avoid damages and safety of gas industry. The entire control system is based on is based on low power MSP430 microcontroller and Xbee techniques. The sensor node helps in collecting data regarding gas leakage and the particu...

Template-free, rapid polymerisation was employed to synthesize polyaniline nanofibers using chemical oxidative polymerisation of aniline, with HCl as a dopant. The doped and dedoped nanofibers were deposited onto conductometric sapphire transducers for gas sensing applications. The sensors were exposed to various concentrations of hydrogen (H2) gas at room temperature. The sensitivity was measu...

In recent years, owing to the significant applications of health monitoring, wearable electronic devices such as smart watches, smart glass and wearable cameras have been growing rapidly. Gas sensor is an important part of wearable electronic devices for detecting pollutant, toxic, and combustible gases. However, in order to apply to wearable electronic devices, the gas sensor needs flexible, t...

This paper presents an integrated CMOS compatible gas identification system for use with any type of metal-oxide gas sensor array. The logarithmic spike generation unit translates the output from any metal oxide gas sensor array into a spike pattern. The spike sequence matching circuit then compares this spike pattern with a reference set of data performing pattern recognition. The simulation r...

The detection of partial discharge through analysis of SF(6) gas components in gas-insulated switchgear, is significant for the diagnosis and assessment of the operating state of power equipment. The present study proposes the use of a TiO(2) nanotube array sensor for detecting the SF(6) decomposition product SO(2), and the application of the anodic oxidation method for the directional growth o...