摘要
地震传感器在地震学研究与防震减灾领域应用广泛,数量众多,将其测量量值溯源到国际单位,能够保证测量结果准确和统一。文中对地震传感器测量量值进行量值溯源的必要性进行了叙述,说明了地震传感器的量值单位与国际标准单位的关系。对地震传感器量值溯源的途径以及与校准之间的联系进行了阐述。以力平衡加速度计为例对地震传感器的工作原理进行了说明。参照有关的国际标准,研究了基于正弦逼近法的地震传感器绝对法校准的技术要求,并给出了量值溯源框图,为建立地震传感器的量值溯源体系提供了技术依据。最后对低频振动校准的技术发展方向也作了阐述。
Large number of seismic sensors are applied and used widely in seismology research and earthquake disaster prevention. In order to ensure the precieness and unity of measurement results, the measuring value shall be traced to international system of units（SI）. The necessity of traceability for measurement result of seismic meters is described in this paper. The relationships between value units of seismic meters and international system of units are explained. The connections of traceability approach for seismic meters and calibrations are elaborated. Working principle of seismic meters was described in example of force balance accelerometer. Refering to the concerning in- ernation standards, technical requirements for absolute calibration of seismic meters based on sine-approximation method are researched. A traceability block diagram is given in this paper. All the research provides a technology basis for seismic sensors value traceability system. In the final, the direction for technical development of low frequency vibration calibration is elaborated also.
出处
《世界地震工程》
CSCD
北大核心
2011年第3期157-162,共6页
World Earthquake Engineering
基金
地震行业科研专项项目(200708040)
关键词
地震传感器
国际标准单位
量值溯源
绝对校准
seismic meters
international system of units （SI）
value traceability
absolute calibration
