Sensing and alarming device for comprehensively detecting earthquakes
An alarm device and all-round technology, applied in the direction of measuring devices, seismology, alarms, etc., can solve the problems of complex structure of mechanical transmission parts, easy resonance of seismic waves, etc., to achieve no time delay and related losses, low energy consumption, Ease of evacuation
Inactive Publication Date: 2015-01-28
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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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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[0034] Overall structure of the present invention is as figure 1 As shown, the small earthquake alarm and the large earthquake alarm are connected in parallel as the load of the regulated power supply. The stabilized power supply is: the two ends of the secondary side of the step-down transformer are respectively connected to the two input ends of the bridge full-wave rectifier. There are two branches connected in parallel between the two output ends of the bridge full-wave rectifier. The voltage diode D7 is connected in series with the resistor R1; the voltage between the two output terminals of the bridge full-wave rectifier is the regulated power supply voltage. Through this connection mode, the alarm device can be directly connected to the 220V, 50Hz AC power supply, and the DC voltage obtained by the small earthquake alarm and the large earthquake alarm is 3.8V.
[0035] Specifically, the structure of the small earthquake alarm is as follows: figure 2 shown in figure...
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The invention discloses a sensing and alarming device for comprehensively detecting earthquakes, and belongs to the field of earthquake alarming technology and equipment. A small earthquake alarm and a large earthquake alarm are connected in parallel to serve as loads of a voltage-stabilized source. Contact switches adopted in the small earthquake alarm and the large earthquake alarm are structurally composed of copper bars, ellipsoidal soldering tin, copper sheet rings and spiral copper wires. Each copper sheet ring is fixed to one end of the corresponding copper bar, the copper bars are fixed, each ellipsoidal soldering tin is fixed to one end of the corresponding spiral copper wire, the other ends of the spiral copper wires are fixed, and the ellipsoidal soldering tin is arranged in the centers of the copper sheet rings. When the earthquakes are sensed, the contact switches are triggered, the alarms work, and then the alarming function is achieved. The sensing and alarming device is simple in structure and convenient to manufacture, and can comprehensively detect earthquake waves of different-magnitude earthquakes and give audio and visual alarms 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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IPC IPC(8): G08B21/10G01V1/18
CPCG01V1/189G08B21/10
Inventor 徐帆云邹麟阳超
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA