Earthquake early warning system for buildings

Abstract

The invention belongs to the technical field of physical instruments, and relates to an earthquake early warning system for buildings. A micro-acceleration sensor is fixed in a relevant position on a building; when the building shakes or vibrates, the micro-acceleration sensor also correspondingly shakes or vibrates, and acquired acceleration data of the acceleration sensor is converted into displacement data through a data acquisition terminal; and if the spread of longitudinal waves of earthquakes is monitored, the displacement data is sent to a monitoring master station or an earthquake alarm systems in other place in a text-message transmission way via GSM wireless networks, and then a sound-light alarm system is started. The earthquake early warning system has the advantages of small size, light weight, low cost, low power consumption, long life span, high reliability, wide dynamic range, fast response, convenience for installation and debugging, and the like, and can be established in main regions of China to construct a stereoscopic monitoring system for natural disasters.

Description

technical field [0001] The invention belongs to the technical field of physical instruments and relates to a building earthquake early warning system. Background technique [0002] my country is located between the Pacific Rim and the Eurasian seismic belt, and is one of the countries most severely affected by earthquakes in the world. According to the measurement results released by the State Seismological Bureau, more than 3,000 destructive earthquakes of magnitude 5 or above occurred in my country in the 20th century, with an average of more than 30 earthquakes per year. [0003] Seismic waves cause building damage mainly through the action of seismic force. Seismic waves are divided into three types, namely longitudinal waves (P waves), transverse waves (S waves), and surface waves. The longitudinal wave (P wave) has relatively small energy and the fastest propagation speed; the transverse wave (S wave) is more destructive, and its forward speed is only 60% of the longi...

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Problems solved by technology

[0008] However, the system is very complicated. The electromagnetic wave interference generated by the earthquake is very strong when the remote wireless communication is used, which affects the accurate transmission of the alarm signal. If the earthquake damages the communication equipment, the signal cannot be transmitted at all.

The system uses comprehensive network data calculations to send out alarms, which delays valuable early warning time

In addition, the alarm terminal of the system chooses TV, radio and other means, and the service-oriented crowd is limited. A large number of people work in buildings, and there is no way to see or receive alarm signals.

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