我国大部分坝观测位移需携带光学座标仪人工观测,劳动量大。原研制的接触式垂线座标仪因垂线钢丝偏细、吊重轻,影响测量精度。如引进国外仪器设备价格昂贵,所以国内工程上急需研制非接触式垂线座标仪。水电部南京自动化研究所在原研究的电容传感技术的基础上,选择感应式非接触垂线座 Most dam observation displacements need to carry the manual observation of optical coordinates, a large amount of labor. The original developed contact-type vertical line coordinates due to thin vertical wire, hanging light, affecting the measurement accuracy. Such as the introduction of foreign equipment expensive, so urgent need to develop domestic projects non-contact vertical coordinate. Based on the capacitive sensing technology originally researched by the Nanjing Institute of Automation of the Ministry of Electricity and Water, the inductive non-contact vertical line base