| Title |
Performance Improvement of CO Sensor Signal Conditioner for Early Fire Detection System |
| Authors |
박종찬(Park, Jong-Chan) ; 손진근(Shon, Jin-Geun) |
| DOI |
https://doi.org/10.5370/KIEEP.2017.66.2.082 |
| Keywords |
Advanced signal conditioning ; Electochemical CO sensor ; Linearity ; Three-electrode ; Sensitivity |
| Abstract |
This paper presents performance improvement of CO gas sensor signal conditioner for early fire warning system. The warning system is based on the CO sensor and its advanced signal conditioning modules network that employ electochemical gas sensor. The electochemical has advantage of having a linear output and operating with a low consumption and fast response. This electrochemical gas sensor contains a gas membrane and three electrodes(working, counter, reference electrode) in contact with an electrolyte. To use a three-electrode sensor, a voltage has to be applied between the working and the reference electrode according to the specification of the sensor. In this paper, we designed these requirements that should be considered in temperature compensation algorithm and electrode measurement of CO sensor modules by using advanced signal conditioning method included 3-electrode. Simulation and experimental results show that signal conditioner of CO sensor module using 3-electrode have a advantage linearity, sensitivity and stability, fast response etc.. |