Abstract
Catalytic gas sensors are among of the most old and widespread gas sensors for combustible gas concentration measurements. However, power consumption these sensors provide is relativity high for modern electronic applications. In this paper research results of combination a silicon MEMS fabrication with operating modes for extended life service, increasing sensitivity to target gases and power consumption reduction are presented. The described solutions allow achieving long-term stability of the sensor in difficult operating conditions - the main requirement for industrial applications, where the continuity of the process is of high value expressed in tangible assets and human lives.
Highlights
Nowadays, the industrial safety standards are tougher with respect to monitoring of working environmental conditions
The described solutions allow achieving long-term stability of the sensor in difficult operating conditions - the main requirement for industrial applications, where the continuity of the process is of high value expressed in tangible assets and human lives
One can cite here, an attempt to unite a wireless network of all combustible gas sensors into one network and an attempt to build on their basis a joint map of mine combustible gases emission
Summary
The industrial safety standards are tougher with respect to monitoring of working environmental conditions. For successful implementation of IoT concept requires long-term stable sensors and actuators for different physical values. The same type of catalytic sensors can be found in portable devices on the body of miners which experiencing constant vibration and gas flow changes and stationary devices in the ventilation system, where the vibrations are minimal and the gas flow is stable [1]. It can be seen from these proposals that factors affect a sensor signal localized in one single environment may affect dramatically on sensitivity to target gases.
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