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Earthquake alarm

A technology of alarms and relays, applied to alarms, instruments, etc., can solve the problems of high price, complicated circuit principle and structure, and inconvenient popularization of urban and rural residents, and achieve good warning effect and fast sensing effect

Inactive Publication Date: 2011-01-05
张春阳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the electronic earthquake alarms used now have very complicated circuit principles and structures, which make their prices very expensive and are not easy to popularize in urban and rural households.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Example 1 ,Such as figure 1 As shown, the schematic circuit diagram of Embodiment 1 is given, which includes a support frame 1 , a cycloid 2 , a magnet 3 , a power supply 4 , a reed switch 5 , and an audible and visual alarm device 7 . The shown support frame 1 is fixed to the bottom plate, the shape of the support frame 1 is not fixed, and can be made into various shapes such as factory shape and C shape; the top of the support frame 1 is connected with the magnet 3 through the cycloid 2, if the bottom plate vibrates , the magnet 3 will swing at a certain angle, that is, the supporting frame 1, the cycloid 2 and the magnet 3 form an induction device for earthquakes. Alarm circuit is made up of power supply 4, dry reed switch 5, sound and light alarm device 7, and dry reed switch 5 is arranged on the just below of magnet 3, and dry reed switch 5 is connected to the two ends of power supply 4 after being connected in series with sound and light alarm device, dry The r...

Embodiment 2

[0015] Example 2 , In this embodiment, a relay J6 is added, so that the circuit has a self-locking function, and continuous alarming can be realized. The induction device in the present embodiment is the same as that in Embodiment 1, and the difference is the alarm circuit. In the alarm circuit of the present embodiment, a relay J6 is added and the power supply 4 adopts 220 volts of alternating current, as figure 2 As shown, the shown reed switch 5 is arranged directly below the magnet 3. After the reed switch 5 is connected in series with the coil of the relay J6, it is connected in parallel with the sound and light alarm device 7. The normally open point of the reed switch 5 and the relay J J1 is connected in parallel, and the sound and light alarm device 7 is connected in series with the normally open point J2 of the relay. The working principle of the earthquake siren of the present embodiment: when an earthquake occurs, at first the magnet 3 swings to make the reed swi...

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Abstract

The invention provides an earthquake alarm which comprises an induction device and an alarm circuit and is capable of giving acousto-optic alarm. The earthquake alarm is characterized in that the induction device comprises a supporting frame fixed on a bottom plate and a magnet suspended on the supporting frame; the alarm circuit comprises a power supply, a reed pipe arranged below the magnet and an acousto-optic alarm device arranged in the circuit, wherein the reed pipe is accessed to the circuit in a form of a normally-closed point. The alarm comprises the induction device and the alarm circuit, and realizes the rapid induction on earthquake and caution function for people in a seismic center. A relay J playing a self-locking function is arranged in the alarm circuit to ensure that an alarm signal is continuous.

Description

technical field [0001] The present invention relates to an earthquake alarm, and more specifically relates to an earthquake alarm which includes a sensing device and an alarm circuit and can perform sound and light alarms. Background technique [0002] When an earthquake occurs, the most basic phenomenon is the continuous vibration of the floor, and the main feature is obvious shaking. People in an earthquake zone sometimes feel smaller tremors first, before larger ones. This is because the seismic wave is transmitted from the ground to the floor, and the longitudinal wave arrives first. The shear wave then produces large-amplitude shaking in the horizontal direction, which is the main cause of geological disasters. However, if there is an alarm device to alert us to the earthquake at the moment the floor first starts to shake, then the damage caused by the earthquake can be reduced. Yet the electronic earthquake siren that uses now, circuit principle and structure are ve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08B21/10
Inventor 张春阳张福祯
Owner 张春阳
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