An all-round detection earthquake sensing and alarm device

Abstract

The invention discloses an all-round detection earthquake sensing alarm device, which belongs to the field of earthquake alarm technology and equipment. The small earthquake alarm and the large earthquake alarm are connected in parallel as the load of the stabilized voltage power supply. The contact switch structure adopted by the small earthquake alarm and the large earthquake alarm is: it is composed of copper rod, ellipsoidal solder, copper sheet ring and spiral copper wire. The copper sheet ring is fixed at one end of the copper rod, and the copper rod is fixed. One end of the copper wire is fixed with ellipsoidal solder, the other end is fixed, and the ellipsoidal solder is placed in the center of the copper sheet ring; the earthquake is sensed, the contact switch is triggered, the alarm works, and the alarm is realized. The invention has the advantages of simple structure and convenient manufacture, and can perform comprehensive detection on seismic waves of different magnitudes and issue audio-visual warnings in time.

Description

technical field [0001] The invention relates to the field of earthquake alarm technology and equipment, in particular to an all-round earthquake sensing alarm device. Background technique [0002] The earth's internal activities are very active, and its violent movement may cause changes in the surface structure at any time, resulting in random earthquakes, and it is difficult for humans to predict in advance for a long time. The thickness of the continental crust and the ocean or the crust at different locations is completely different. When an earthquake occurs, the source radiates two kinds of seismic waves, the longitudinal wave P and the transverse wave S. They will each propagate to the surroundings at different speeds and arrive at the ground at different times. s position. It is also difficult to detect at depths of 20km or more underground using deep drilling technology, which greatly increases the difficulty of direct detection of earthquakes. [0003] China is l...

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Problems solved by technology

[0007] In order to solve the problems that the existing earthquake alarms can only issue an alarm for earthquakes in a single direction, the key detection seismic wave part is prone to resonance, and the structure of the mechanical transmission part is complex, etc., the present invention provides an all-round detection earthquake sensor alarm. High sensing sensitivity, low false positives, and low energy consumption for all-round detection of seismic waves

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