The electrochemical sensors is the sensor type with a liquid proof mass combined with elastic membranes instead of solid proof masses coupled with springs or pendulums was used as the vibration sensing unit. However, commercial Earthquakes alarms will not meet the requirements due to combinations of cost, the high fault alarms rate, lack of mobility, and inherent short alert time period provided by the commercial Earthquakes alarms.Ī number of seismic sensors based on various principles have been disclosed and classified into electrochemical sensors, eddy current sensors, fiber optic sensors, capacitance microsensors, electro-magnetic seismometers, piezoresistive micro sensors, , and piezoelectric accelerometers,. The following facilities or organizations will be proper candidate to use Earthquakes alarms: Power stations, Gas stations or distributors, Railroad system, Military bases, Airports, Schools. Therefore, the measured results cannot benefit the people who are not in the facilities with Earthquakes alarms installed. In addition, the in-house installed commercial Earthquakes alarms lack mobility. However, the commercial Earthquakes alarms are costly and working individually wall result in frequent false alarms. Earthquakes alarms are widely used to determine the Earthquakes for years. Cracks on Earth Plates with displacements.
Earthquakes are inevitable due to the following reasons: a.
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