Metal pipeline characteristic analysis system

The invention discloses a metal pipeline characteristic analysis system. The metal pipeline characteristic analysis system comprises a power source, a resistance network, a reference plate, a pressuredifference signal monitoring unit, a differential amplification circuit, a chopping technology-based amplification circuit, a phase shift circuit, a phase-locked amplification circuit, a digital-to-analogue conversion circuit, a master control circuit, a calculation module and an analysis module. By the metal pipeline characteristic analysis system, the resistance between each pair of tested electrodes can be directly acquired, characteristic of the pipeline is obtained by analyzing the resistance network, electric energy can be saved, the requirement on an electronic component is reduced, and the safety under a flammable and combustible environment is improved. 本发明公开一种金属管道特性分析系统，包括：电流源，电阻网络，参考板，压差信号监测单元，差分放大电路，基于斩波技术的放大电路，移相电路，锁相放大电路，数模转换电路，主控电路，计算模块，分析模块。可直接获得各被测电极对之间的电阻，通过对电阻网络的分析，分析得到管道特性。能够节约电能，降低了对电子元件的要求，提