Abstract:Liquefied natural gas (Liquefied Natural Gas, referred to as LNG) is now recognized as a clean energy source, LNG fuel vehicles have been put into use. LNG vehicle-borne gas cylinder is the core part of LNGV vehicle-borne fuel vehicle power system. in order to ensure the safety of the vehicle-borne gas cylinder in the process of use, it is necessary to monitor the LNG gas cylinder liquid level parameters in real time, so a LNG gas cylinder liquid level monitoring system based on wireless communication is designed. By using the capacitance sensor, the liquid level object is measured and the data is transmitted by wireless communication technology, and the STM32 single chip microcomputer is selected as the central processing unit yuan, complete the processing and interpretation of the data to meet the LNG vehicle gas cylinder level monitoring requirements. After repeated verification, the system runs reliably and the measurement error is not more than 1.5%, which fully meets the requirements of LNG gas cylinder liquid level monitoring.
