Design of simple natural gas alarm instrument based on STM32 single chip microcomputer<br>Summary<br>In order to facilitate the frequent use of harmful gas leakage detection including CH4 gas in rural kitchens, a simple natural gas alarm instrument with STM32 as the core is designed. The electrochemical sensor using CH4 gas can accurately and quickly convert the detection results into electrical signals. Using op-77 to improve the accuracy of data. Bt18 Bluetooth module can be used to connect mobile phones and other devices, so as to detect and send alarm signals at any time. In the software part, the firmware library of STM32 is used to modularize the design in C language under the environment of keiluvision 5.<br>
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