Shock sensor, earthquake alarming system using same and alarming method

Abstract

The invention belongs to the field of earthquake alarming equipment, and in particular relates to a water optical shock sensor, an earthquake alarming system consisting of a sensor matrix and an alarming method. Light rays emitted from a laser generator of the sensor are reflected by a water surface, the reflected light rays irradiate photoelectric tubes and then optical signals are transmitted to a circuit module by the photoelectric tubes for processing. A plurality of shock sensors, together with an information analysis module, form the earthquake alarming system. The earthquake alarming system has the characteristics of relatively higher sensitivity, relatively lower cost, high reliability, the capacity of timely and accurately giving an alarm for an earthquake, high anti-interference capacity, and simple, light and convenient structure, is particularly applied to the alarming for aftershocks, mainly serves households, buildings, schools, enterprises or a certain town, and is applied to the timely alarming in middle and primary schools in earthquake-prone regions.

Description

technical field

[0001] The invention belongs to the field of earthquake alarm equipment, and in particular relates to a water-optic vibration sensor, an earthquake alarm system composed of the sensor matrix and an alarm method. Background technique

[0002] At present, there are many types of micro-vibration sensors, and there are mainly three principles used. One is to detect vibration by detecting changes in the electromagnetic field caused by vibration, such as a capacitive detection sensor; the other is to use the relative motion between the vibration-sensitive part and the inertial stationary part in the sensor to obtain a vibration signal, such as a mechanical pendulum vibration sensor; The last is to detect vibrations with gratings. The first type of sensor has the disadvantages of complex structure and narrow measurement range; the second type has the disadvantages of low sensitivity and is vulnerable to strong vibration; the grating detection has the disadvantages ...

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