期刊名称：International Journal of Mechatronics, Electrical and Computer Technology
印刷版ISSN：2305-0543
出版年度：2017
卷号：7
期号：26
页码：3582-3594
出版社：Austrian E-Journals of Universal Scientific Organization
摘要：The proposed study involves design and development for the earthquake alarm detection circuit based on electronic devices only which will be highly helpful for the determination of high frequency vibrations which will trigger an impulse when the S wave is detected by the earthquake sensor which in this case is a shaft with load that represents a steel or building structure that shakes vibrations when the corresponding surface wave reaches the ground. In this analysis we have identified the need for an electronically monitored high frequency detector circuit which triggers a pulse when the vibration occurs for earthquake occurrence for p wave followed by surface wave. The circuit is activated to read for 10 seconds with the use of an Arduino microcontroller that latches the output as high for 10 seconds and reads the shaft output vibration data for further diagnosis. If the p wave arrives, the s wave arrival is estimated to occur for the next 9 seconds for an intermediate depth based earthquake. This alarm detector circuit can be used in conjunction with steel based structures with a drill made to house the electronic instruments shown below and a microcontroller hereby to start an alarm for earthquake and also detect aftershock occurrences in steel based shafts and joint for better operation. One major limitation of geophones is the electrical damping. We applied a shunt resistor using back electromotive force which acts as damping. The maximum electrical damping is limited by the value of the passive resistor. We present the general architecture of the circuit with description and operation, design flow chart and implementation of the sensor. We create boolean sensing range for earthquake alarm detector and analyze how an inner and outer circle can identify the ‘Earthquake Preparation Zone’ or the seismogenic zone corresponding to an earthquake occurrence in the city to identify disaster region.
关键词：Sensor; Electronic Control Module; Earthquake Warning; Earthquake Monitoring Unit
