A non-contact level measurement system is designed to measure the level of corrosive

adhesive

strong acid

or strong alkali liquid.STM32 is applied to the system as a micro-controller

and capacitive sensor and three-axis gyroscope/acceleration sensor are installed on the outer wall of the container respectively to obtain the liquid level and attitude of the container.Later

such data will be analyzed

processed and converted into the corresponding liquid level and volume.Finally

the measured parameters will be transmitted to the mobile phone through the WiFi module.The system boasting simple circuit structure and reliable performance can measure both the level and volume.The experimental result shows that the system can accurately measure the liquid level ranging of 0～140 mm with relative error of 5 %

it provides a reference for non-contact liquid level measurement.