水电站大坝内部观测仪器鉴定

Appraisal of Monitoring Instrument Embedded in Dams

大坝施工期埋设在坝体内的现测仪器，无法取出进行状态测试。根据水工比例电桥对差动电阻式仪器进行测量的基本原理和电路图，阐明了测量误差产生的原因，提出了一套较为完整的科学鉴定理论。编制了鉴定软件，使内部现测仪器得到及时鉴定成为可能。

Monitoring instrument embedded in dams during the period of construction can not be taken out for condition inspection. Based on the principle and circuitry of measuring the differential resistance instrument with proportional bridge used in hydrotechnics,this paper clarifies the reasons of occurring measurement errors,and puts forward a complete set of appraisal theory. Applied appraisal software has been programmed,enabling the embedded monitoring instrument can be timely appraised.