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基于微型传感器的地震加速度监测系统技术研究
The Engineering System for Detecting Earthquake Acceleration Based on Micromachined Accelerometer
【作者】 许建华;
【导师】 滕云田;
【作者基本信息】 中国地震局地球物理研究所 , 地球探测与信息技术, 2006, 硕士
【摘要】 我国是世界上遭受地震灾害最严重的国家之一。为了减轻工程结构造成的地震灾害,必须科学地了解强烈地震动的特征,强震观测是科学了解上述问题的最重要的手段。随着电子技术和计算机应用技术的迅猛发展,地震监测仪器的技术性能也在不断的提高。 目前,测震技术发展的速度很快,传统的电子式测振仪需配上磁电式传感器(亦称拾振器),才能测量加速度及位移,这种仪器的价格高,体积大。在高新技术推动和强势市场需求牵引下,以集成电路工艺和微机械加工工艺为基础制造的各种微传感器和微机电系统(MEMS)脱颖而出。MEMS是英文Micro Electro Mechanical Systems的缩写,即微电子机械系统。微电子机械系统(MEMS)技术是建立在微米/纳米技术(micro/nanotechnology)基础上的21世纪前沿技术,是指对微米/纳米材料进行设计、加工、制造、测量和控制的技术。它可将机械构件、光学系统、驱动部件、电控系统集成为一个整体单元的微型系统。这种微电子机械系统不仅能够采集、处理与发送信息或指令,还能够按照所获取的信息自主地或根据外部的指令采取行动。 本设计就是根据目前微型加速度传感器的发展状况,采用ADI公司于2003年4月23日推出的一款高精度Iow-g传感器系列新型微机电加速度传感器,设计一套既具有先进性又具有实用性的地震加速度监测系统,完成对地震事件的检测、采集、触发与监控,为地震工程研究和防震减灾工作提供重要的基础资料。 通过实验数据分析了在不同环境下各种噪声对监测仪器的影响,以及对模数转换装置采集地震信号的灵敏度和稳定性进行了分析,并且通过控制中心对接收到的地震数据波形进行了分析和处理。实验结果表明,基于微型加速度传感器的地震加速度监测系统可以稳定工作,例如可以准确的检测、采集到地震信号,通过电力线网络传输方式可以将数据传输到控制中心,控制中心也可以对数据进行存储,对波形进行分析。 研究结果表明,基于微型加速度传感器研制地震加速度监测系统在技术上是可
【Abstract】 China is one of the countries suffered the most severe earthquake disaster. To relieve the earthquake disaster of engineering structure, we must understand the characteristics of strong earthquake motion and strong motion observation is the most important method to solve the problem mentioned above. With the rapid development of electronic and computer application technology, the technical characteristics of seismic surveillance instruments are improving increasingly.At present, the vibrometer technique is developing quickly, the vibration can measure acceleration and displacement. But this instrument has many disadvantages such as low accuracy, narrow frequency range, bad overload capacity, high price and large volume. Advanced by the new-high technology and draught by the strong market demand, various micro sensors and MEMS made on the basis of integrated circuit technology and micro machining processing technology come to the force in the competition. MEMS is the abbreviation of the Micro Electro Mechanical Systems. MEMS is the frontier technology in the 21st century, it is based on the micro technology and nanotechnology being designed, processed, measured and controlled. MEMS can make mechanical component, optical system, driving member and electric control system to be an integral microsystem. It can not only collect, disposal, and send information or command, but also autonomically take action by the obtained information and external command. We adopt the new pattern micro-electromechanical accelerometer with high accuracy made in ADI Company on April 23,2003 to complete checking the earthquake event.Mainly based on the development situation of micro-accelerometer, in this paper we design an earthquake monitoring system with technicality and
【Key words】 strong motion observation; micro; acceleration sensor; Accelerometer; power line transmission;
- 【网络出版投稿人】 中国地震局地球物理研究所 【网络出版年期】2006年 12期
- 【分类号】P315.61
- 【被引频次】18
- 【下载频次】699