本文介绍了《压敏式储罐液体微机计量系统》的结构原理、引压工艺、主要功能及技术指标。详细探讨了对系统计量结果至关重要的计量算法数学模型。并着重介绍了高分辨率、高精度、价格低廉的A/D转换接口的设计方法。 This paper introduces the structure principle, pressure-relief technology, main functions and technical indexes of the “pressure-sensitive liquid micro-computer measuring system for tank”. The mathematic model of measurement algorithm, which is crucial to the system measurement results, is discussed in detail. The design method of A / D conversion interface with high resolution, high precision and low price is emphatically introduced.