79 results about "Earthquake warning system" patented technology

A method or system for detecting a seismic event includes detecting a primary wave of a seismic event using at least one sensor at a measurement location; using at least one parameter of the detected primary wave to determine an estimated peak ground intensity at the measurement location without determining the magnitude of the seismic event; determining an epicenter of the seismic event; and estimating the intensity of the seismic event at a specified location using the determined estimated peak ground intensity and the distance of the specified location from the epicenter. The epicenter can be determined using sensors at a single location. A noise detection system can filter out detected signals that correspond to local vibrations rather than seismic events.

The invention relates to a vehicle-mounted earthquake emergency handling device for a high-speed railway. The vehicle-mounted earthquake emergency handling device for the high-speed railway comprises a GSM-R communication unit, a catenary outage detection unit and a control unit, wherein the GSM-R communication unit is used for receiving earthquake alarm information, and sending the earthquake alarm information to the control unit, the catenary outage detection unit is used for detecting whether a catenary is in the outage state or not, and sending the detection result to the control unit, and the control unit is connected with an emergency braking loop installed on a train braking system in a hardwired mode, and is used for controlling the emergency braking loop to carry out emergency braking when necessary according to the information sent by the GSM-R communication unit and the catenary outage detection unit. According to the vehicle-mounted earthquake emergency handling device for the high-speed railway, early-warning information sent by an earthquake early-warning system is received through a GSM-R wireless communication system, the power supply state of the catenary is detected in real time in an online mode, the corresponding train control mode is adopted according to the received early-warning information and the catenary outage state, and thus reliability and timeliness of earthquake emergency handling are effectively improved.

The invention relates to a seismic warning system comprising of two or more sensors for detecting shock signals and electronic signal processing elements for processing and analyzing said signals. According to the invention, the system has at least two detection units, each comprising a shock sensor and electronic signal processing elements. The signal processing elements of each detection unit are configured in such a way that they detect the primary waves of earthquakes using the signals of the shock sensors. The detection units are interconnected via an electronic data bus.

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.

The invention discloses an earthquake early warning system capable of capturing earthquake vibration energy and being self-powered. The system can capture the vibration energy when the earthquake happens, convert the vibration energy of the earthquake into the electric energy and supply the energy to an electromagnetic emission system of the earthquake early warning system; the electromagnetic emission system emits electromagnetic waves carried with earthquake intensity information; the electromagnetic waves are transported through relays in the existing mobile communication base station group after the earthquake happens, and thenan early warning signal is sent out.

The invention provides an earthquake early warning method, a set top box, and an earthquake early warning system. Data connection is firstly constructed between the set top box and an earthquake earlywarning server, earthquake early warning information sent by the earthquake early warning server is received through the data connection, and multimedia playing equipment connected with the set top box is finally utilized to present the earthquake early warning information, thereby utilizing the principle that the propagation speed of the electric wave is quicker than that of the earthquake wave;a user can know the information of incoming earthquake in advance before the earthquake wave is transmitted to the user location, the effect of earthquake early warning is practically and effectivelyachieved, the timeliness of earthquake early warning is improved, and the society loss caused by earthquake disasters is reduced.

The invention discloses a medium-and-long-term earthquake early warning system based on multi-source remote sensing data and monitoring station data. The medium-and-long-term earthquake early warningsystem comprises a sensor unit, a data acquisition unit, a data storage unit, a positioning unit, a data processing unit, a historical data unit, a data space analysis unit and an early warning resultoutput unit, wherein the sensor unit, the data acquisition unit, the data storage unit and the data processing unit are connected, and the historical data unit is connected with the data space analysis unit. According to the medium-and-long-term earthquake early warning system, potential earthquake occurrence places and earthquake occurrence time periods are provided through collaborative analysis of the remote sensing data, the actual measurement data and the historical data, related workers are facilitated to well do prevention and disaster relief work, national economic losses caused by disasters are reduced, and the life and property safety of people is guaranteed.

The invention relates to a pendulum mass-spring hammer head type urban public automatic impending earthquake warning system, which is mainly mixed by groups of various pendulum masses, and uses the collision generated by the shaking of a long rod and a spring hammer head with surrounding fixed contact terminals as the warning datum, belonging to the shaking trigger circuit closing type impending earthquake warning technology. When in ready, a warning circuit is off, and the warning circuit is closed to send out warnings and spread signals to surrounding towns when in operation. The invention can be independently used as a public automatic impending earthquake warning system of a county town, a town and a county, and can simultaneously send out various warnings. If the automatic warning device is installed on one town, warning can not be sent out when the pendulum mass is still, namely that buildings can never fall down in the state. And the warning device sends out warnings when the pendulum mass starts to shake, which means the surface shaking, as the premonition of an earthquake. Thus the automatic warning device can be installed to evacuate people in advance before people directly feel the earthquake.

A method or system for detecting a seismic event includes detecting a primary wave of a seismic event using at least one sensor at a measurement location; using at least one parameter of the detected primary wave to determine an estimated peak ground intensity at the measurement location without determining the magnitude of the seismic event; determining an epicenter of the seismic event; and estimating the intensity of the seismic event at a specified location using the determined estimated peak ground intensity and the distance of the specified location from the epicenter. The epicenter can be determined using sensors at a single location. A noise detection system can filter out detected signals that correspond to local vibrations rather than seismic events.

The invention discloses a high-speed railway earthquake early warning system single / double-seismometer interference identification method and belongs to the field of railway engineering technologies.The method comprises the following steps that: 1) an event trigger starting point is determined on the basis of the increase rate change of earthquake acceleration in a certain direction; 2) single-seismometer waveform characteristic analysis is carried out on data in a time window with a preset length which come from two seismometers after an event is triggered, so that whether the signals of thetwo seismometers are interference signals is judged, if it is judged that the signals of the two seismometers are effective seismic signals, the method shifts to the next step; and 3) data preprocessing is performed on the signals from the two seismometers through discrete wavelet transformation, and correlation analysis is carried out through a post-preprocessing wavelet coefficient, and whetheran earthquake event occurs is judged according to judgment on whether similarity meets a preset condition. With the method adopted, interference data can be effectively identified with the timelinessof earthquake early warning ensured.

The invention discloses an intelligent autonomous networking earthquake early warning device and method. The device is characterized in that an earthquake monitoring front end consists of a data collection module, an edge calculation module and a cooperative communication module, has the autonomous networking capability, and is used for achieving the intelligent strong earthquake recognition, early warning calculation and robust communication; the acquisition module comprises a GNSS module and an MEMS accelerometer; the calculation module employs an embedded microprocessor and is used for calculating an earthquake trigger confirmation signal and earthquake wave information in real time according to the multi-source monitoring data, and if the earthquake trigger confirmation signal is larger than a set threshold value, all earthquake monitoring front ends recognizing vibration in the ad-hoc network form a temporary monitoring network, and networking type strong earthquake mutual judgment and networking type earthquake early warning information calculation are formed; the communication module adopts a radio frequency chip supporting long-distance wireless transmission to establish anintelligent wireless communication ad hoc network and transmit and receive the seismic wave and early warning information obtained by the calculation module. The intelligent autonomous networking earthquake early warning device and method can be widely applied to earthquake early warning systems, and has the advantages of low cost, low power consumption, autonomy, intelligence, high timeliness, high reliability and the like.