Planar miniature capacitors are the best powered devices for flexible wearable electronic devices, but the single capacitor has a small voltage window and low energy density, making it difficult to power the wearable device continuously and without interruption. There are many different types of integrated capacitor array driven detection systems have been developed, but with the light detection, pressure sensor phase Compared with gas sensors, the response time of target gas is long, the corresponding energy consumption is larger, the requirements of energy devices are higher, and the difficulty of integration is increased.Therefore, it is important to study the self-driven gas sensor integrated system significance.
The integrated system consists of a circular capacitor array based on electrodeposited polypyrrole electrode material, a room temperature ethanol gas sensor based on carbon nanotube / polyaniline material and an in-situ gas analysis and display system. The capacitance of the assembled capacitor is 47.42 mF / cm2, the response time of the gas sensor to ethanol gas at normal temperature is 13s and 4.5s, respectively. When gas enters the sensor, the current on both sides of the gas sensor will change. The components in the circuit board will collect this change and proceed Calculated and compared with the pre-stored standard curve to obtain the gas concentration value, and then transmit the signal to the phone via Bluetooth, then the phone APP will show the corresponding gas concentration and draw a real-time It curve, personalized wine drunk Testing and other fields have a wide range of applications.