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The main components of light fuels such as gasoline, diesel oil and aviation fuel are hydrocarbons, which are almost non-conductive substances with extremely low conductivity. In the process of processing, transportation, storage and filling of light fuel oil, it is easy to accumulate more electrostatic charges, which will lead to major safety accidents such as fire and explosion when electrostatic sparks are generated. Therefore, in order to prevent the occurrence of serious accidents caused by electrostatic accumulation, the conductivity of light fuel oil should be tested regularly during transportation and filling. When the conductivity value is found to be low, an appropriate amount of antistatic agent should be added in time to ensure the safety range of conductivity specified in the Safety Static Conductivity of Oil Products. At the same time, the electrical conductivity of oil products also reflects the number of impurities in oil products. In particular, aviation fuel has stricter requirements on electrical conductivity in order to ensure the sufficiency and safety of its combustion, so it is of great significance to detect the electrical conductivity of light fuel. Aiming at the detection requirements of light fuel conductivity, based on the principle of conductivity detection, a fuel conductivity monitoring system based on STM32 and 4G communication is designed. With STM32 as the master, the oil conductivity value is obtained by detecting the weak current at both ends of the electrode by using the precision electrometer measurement method, and the data is transmitted to the terminal for monitoring through 4G. After testing, the system has high detection sensitivity, low cost and can realize remote monitoring, which provides safety guarantee for oil transportation and provides reference for the design of oil quality monitoring system.
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