Measurement precision evaluation method for liquid level sensor failure reconfiguration system

The invention relates to the technical field of liquid level measurement, and particularly provides a measurement precision evaluation method for a liquid level sensor failure reconfiguration system. When a system reconfiguration model is built or a system health management rule is constructed in a measurement system composed of a plurality of liquid level sensor arrays, the precision grade of the measurement system under the fault mode of the liquid level sensors needs to be analyzed quantitatively, and quantitative analysis is very tedious because the number of combined fault modes and change parameters is large; in order to improve the work efficiency, an engineering problem is abstracted into a mathematical model, mathematical relationships among the geometric positions of the sensors, dip angle pitching of an oil surface, rolling direction components and other parameters are deduced, the maximum inclination angle of the critical oil surface is solved, measurable and non-measurable volumes in a storage bo