79 results about "Earthquake warning system" patented technology

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.

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 an earthquake warning system based on communication optical cables. The system can perform real-time monitoring on geological conditions in the area where optical cables are laid, and judge whether an earthquake occurs according to the vibration information from the optical cable, and uses the difference between the seismic wave transmission speed and the light transmission speed to realize early warning function; and the earthquake warning system can transmit threatening strong earthquake information to various towns which can be threatened a few seconds or even more in advance so as to reduce the loss caused by a strong earthquake as possible. The system can also be used for monitoring vicious incidents such as local geologic hazards like landslides and mudflows, and man-made destruction, and has the advantages of wide monitoring range, high sensitivity, good reliability, low cost and high utilization rate.

A mobile phone and tablet based earthquake early warning system that utilizes the on board accelerometer, gyroscope, GPS and other location and movement sensing technologies built into today's mobile smart phones and tablet devices to quickly detect an earthquake event and immediately send an alarm to those in nearby locations that could be adversely affected by the event.

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 discloses railway slope landslide information collection and early warning systems based on distributed fiber sensing. The collection system comprises a linear continuous monitoring sequence and a control cabinet; the linear continuous monitoring sequence is composed of fiber sensor buried in the slope structure at one side of a railway in an M shape, and the slope condition can be comprehensively and effectively monitored without omission; and the control cabinet comprises an optical path module which can generate pumping laser pulses, a circuit module which controls the optical path, and a communication module which transmits data to a monitoring room. The system monitors deformation of the railway slope via the fiber sensors which are buried in the distributed manner, and transmits collected information to the control cabinet in real time via the wireless communication module; the system can effectively forecast slope landslide, and predict possible slope landslide according to trends of data; and the systems are characterized by high stability, high anti-interference capability and long signal transmission distance.

The invention relates to an early earthquake warning system (EEWS) used for detecting the earthquake in an early period and mass-sending an earthquake warning to ordinary residents. The earthquake warning system comprises earthquake detection units, a ruling unit, a mobile communication server and a warning sending unit, wherein the earthquake detection units are distributed everywhere; the ruling unit is used for analyzing, processing and judging a detected original earthquake signal; and the mobile communication server is used for mass-sending a dangerous earthquake signal. The earthquake warning system can detect the earthquake signal in the early period and send a warning signal to ordinary residents in a seismic region at the first time and on a large scale, thereby gaining more escaping time for ordinary residents and maximally reducing the loss caused by the earthquake.

The invention discloses a real-time earthquake magnitude estimation method for an earthquake early warning system. The moment magnitude is solved via earthquake moments, namely, a corresponding moment magnitude is calculated every second after that a signal is detected, and an estimated magnitude very approximate to the practical magnitude is obtained about 20s. The moment magnitude is obtained from the earthquake moments to overcome the problem of magnitude saturation in great earthquake (M>6), the earthquake moments have clear connection with the amplitude omega0 in zero frequency, and the physical meaning is clear. The method of the invention is in real-time, the corresponding moment magnitude is calculated every second after that the signal is detected, the estimated magnitude very approximate to the practical magnitude is obtained about 20s, and the method can be effectively applied to the earthquake early-warning system.

The invention relates to the technical field of earthquake, in particular to a switch, an intelligent host and an earthquake pre-warning system. The switch comprises a sensor module and an acceleration value judging module which are used for collecting multiple acceleration signals generated by shaking and recording shaking duration. Resultant acceleration values are acquired by calculating multiple acceleration values, a peak value in the multiple resultant acceleration values is acquired and compared with a preset resultant acceleration threshold value, the shaking duration is compared with a preset duration threshold value, and when the peak value is greater than or equal to the preset resultant acceleration threshold value and the shaking duration is greater than or equal to the preset duration, first earthquake reminding information is generated and sent out. The acceleration values generated by shaking are subjected to numerical value analysis, the resultant acceleration values are acquired by calculating the acceleration values, and when the peak value is greater than or equal to a preset resultant acceleration value generated by equivalent earthquake, the earthquake reminding information is generated and sent to the outside to enable users to get an earthquake message at the very beginning.

The invention provides an earthquake early warning system comprising a seismic network base station system, an earthquake information processing system, an earthquake information release system, an earthquake early warning gateway system, an earthquake information correction system, an earthquake information service system, a mobile terminal earthquake early warning system and a multimedia terminal earthquake early warning system, wherein the seismic network base station system comprises a plurality of base stations used for collecting earthquake starting information and sending the collected earthquake starting information to the earthquake information processing system; the earthquake information processing system processes the earthquake starting information to generate earthquake information and sends the earthquake information to the earthquake information release system; the earthquake information release system sends the earthquake information to the earthquake early warning gateway system; and the earthquake early warning gateway system comprises a plurality of early warning gateways, the early warning gateways receive the earthquake information from the earthquake information release system and send the earthquake information to the earthquake information service system, and the earthquake information service system sends the earthquake information to the mobile terminal earthquake early warning system and the multimedia terminal earthquake early warning system.

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.

The present invention relates to an earthquake early-warning system and a method based on an earthquake early-warning receiving and monitoring integrated device. The earthquake early-warning system comprises an earthquake early-warning data processing center and an earthquake early-warning receiving and monitoring integrated device. The earthquake early-warning receiving and monitoring integrated device comprises an earthquake early-warning receiving module and an earthquake monitoring module. The earthquake monitoring module and the earthquake early-warning receiving module are connected and share a communication unit and a power supply unit. The earthquake monitoring module monitors, acquires and forms the earthquake monitoring information. The formed earthquake monitoring information is transmitted to the earthquake early-warning data processing center through the shared communication unit. The earthquake early-warning receiving module receives the earthquake early-warning information sent from the earthquake early-warning data processing center, and analyzes the information to obtain the local earthquake early-warning information. On the condition that the triggering condition is met, the earthquake early-warning receiving module sends out an alarm. The earthquake early-warning data processing center also receives the earthquake monitoring information sent from other earthquake early-warning monitoring stations, and sends the earthquake early-warning information to other earthquake early-warning receiving terminals.

The invention relates to a seismic signal detection and seismic phase extraction method which is used for a seismic detection system based on edge equipment. The edge device is realized by adopting a Jetson Nano chip, and a lightweight deep learning model LCANet is constructed and arranged on the edge device; seismic waveform data collected by the equipment end are inputted into the edge equipment, and a seismic signal time sequence, a longitudinal wave seismic phase and a transverse wave seismic phase are outputted in real time. Through the LCANet model, a feature vector sequence describing the intrinsic physical meaning of seismic data is extracted from input seismic waveform data through an encoder based on a reverse bottleneck residual block, and then a feature vector sequence of attention time sequence context information under three tasks is obtained through a context perception attention module; and finally, the feature vector is mapped to a feature space of a corresponding task through a multi-scale heterogeneous decoder. The model is very suitable for being deployed on edge equipment, and meets requirements of an earthquake early warning system for low delay and high performance of data processing.

The invention relates to the field of earthquake early warnings, in particular to an earthquake early warning monitor location change identification method based on an acceleration sensor. The problems of misinformation of an early warning system, the large earthquake early warning parameter deviation and the like caused by the fact that an earthquake early warning monitor is moved are solved. The acceleration sensor for detecting the gravitational acceleration of the position where the earthquake early warning monitor is located is allocated in the earthquake early warning monitor. The earthquake early warning monitor location change identification method includes the start judging step, the parameter setting step, the gravitational acceleration monitoring step, the judging step and the executing step. A system comprises a start judging module, a parameter setting module, a gravitational acceleration monitoring module, a judging module and an executing module. The judging module and the executing module can be arranged on the earthquake early warning monitor or an early warning center. The earthquake early warning monitor location change identification method is concise, convenient to implement, suitable for earthquake early warning monitors without GPS location devices, and favorable for improving the reliability of the earthquake early warning system.

The invention discloses an earthquake early warning system and method for a high-speed railway. The earthquake early warning system comprises an earthquake detection table along a high-speed railway for collecting earthquake information, a traction power supply system for controlling train operation, a storage device and a control device. The control device is used for controlling the operation ofall the parts and is connected with external equipment such as an external computer device to realize communication and control. The technical key points of the system comprise the following steps: 1, an earthquake monitoring station along a high-speed railway monitors earthquake waves and judges that the earthquake waves are destructive; 2, the control device sends a power-off instruction to a traction substation in the section; 3, when a train-mounted ATP finds that a pantograph catenary is powered off, a braking instruction is automatically sent out, and the train is stopped emergently; and 4, the earthquake intensity information of the early warning is stored into a historical database. According to the earthquake early warning method, the earthquake early warning time is greatly advanced, and a train can respond to the emergency situation of an earthquake earlier and faster.

The invention discloses an earthquake detection system, and an earthquake judgment method used for the earthquake detection system. The method comprises: extracting at least one primary wave characteristic relevant to each piece of earthquake data from a plurality of pieces of earthquake data; utilizing a support vector classification (SVC) method to establish an earthquake judgment model according to the at least one primary wave characteristic; and determining whether a new piece of earthquake data belongs to an earthquake event or a non earthquake event according to the earthquake judgment model when receiving the new piece of earthquake data. The method can improve the accuracy of an on-site earthquake warning system, and furthermore improve earthquake warning effects.

The invention discloses a high-speed rail earthquake early warning system based on the big data idea, and belongs to the technical field of high-speed rail earthquake early warning. The high-speed rail earthquake early warning system comprises a high-speed rail data mining system (1), a high-speed rail big data storage system (2), a high-speed rail big data analysis system (3) and a high-speed rail big data earthquake early warning system (4). The high-speed rail earthquake early warning system is characterized in that a high-speed rail earthquake early warning big data stream is established by taking multiple means, the big data stream collected by the system is processed by using a cloud storage technique, a cloud computing distributed processing technique and a virtualization technique, and thus data requested by the high-speed rail earthquake early warning system can be rapidly provided. The high-speed rail earthquake early warning system is large in data amount, rich in data type, high in data processing speed, reasonable in design, high in applicability, good in reliability and convenient to popularize and apply, and in-time and accurate high-speed rail earthquake early warning can be achieved.

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 method for quickly estimating earthquake magnitude based on fusion of multiple types of data sources. The method disclosed by the invention has the benefits that the method for quickly determining the earthquake magnitude by the combined use of high-frequency GPS, strong vibration and multiple types of seismic data is proposed aiming at different applicable scope of various early warning earthquake magnitude calculation methods; the problem that when only a single method is used for determining the earthquake magnitude, the misreport is easy to occur as well as the problem that when initial P wave records are used for determining the earthquake magnitude, the earthquake magnitude saturation is easy to occur is solved, the dynamic and continuous determination on the earthquake magnitude is realized, and the magnitude estimate accuracy is improved to a greatest extent; the method can be applied to an earthquake early warning system, thereby effectively reducingthe misreport rate of the system.

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 a dynamic testing simulated analysis platform of a high-speed railway earthquake early warning system. As a high-speed railway model is designed and manufactured by utilizing asimilarity principle, and a high-definition binocular imaging device is used for monitoring bridges ballastless track roadbeds and ballast track roadbeds, derail threshold values of a running train on different structural materials can be obtained. The dynamic testing simulated analysis platform of the high-speed railway earthquake early warning system has advanced devices and instruments, has exact measured data, is convenient and easy to operate, can obtain derail threshold values efficiently through train derail phenomena.

A high speed railway earthquake early warning system traction power supply system overhead line system power off interface device relates to the overhead line system technology, and comprises a disposal signal reception module, a relay group module and an isolation module; the disposal signal reception module is used for receiving external signals, and outputting same to the relay group module; the relay group module comprises a normally open contact combined circuit and a normally closed contact combined circuit; the output end of the disposal signal reception module is connected with a controlled end of the normally open contact combined circuit and a control end of the normally closed contact combined circuit. The automatic power off emergency disposal purpose of the high speed railwayearthquake early warning monitoring system can be realized with a high reliability.

The invention discloses an earthquake early warning system and earthquake parameter acquisition method based on an accelerated velocity sensor, and belongs to the technical field of earthquake early warning. The system includes a control device and a plurality of detection devices, and each detection device includes three detection units and data processing units disposed near the three detectionunits. The control device receives earthquake information sent by each data processing unit, adaptively selects several target detection devices according to preset rules, and ultimately determines earthquake parameters based on the earthquake information sent by the selected target detection devices, the detection units do not need to transmit a large amount of original earthquake data to the control device in real time, the delay problem caused by package and network transmission of long-distance real-time earthquake data is alleviated, the method is beneficial to improving the accuracy of early warning information in consideration of the limitation of early warning time, and meanwhile the distances arranged between the adjacent detection devices and adjacent detection units are relatively close to each other, which is beneficial for quickly gathering earthquake events, thereby increasing the early warning time.

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.

The present invention provides an earthquake early warning system for schools, through the broadcast provided, the router connected with the broadcast, and the server connected with the router; the server is connected to the earthquake early warning information network through the Internet, and the server is connected to the earthquake warning system through the Internet The early warning information network automatically converts the early warning information of the early warning information network into early warning voice in a timely manner, transmits it to the broadcast through the router, and broadcasts the earthquake early warning information to students through the broadcast, so that students can quickly identify the early warning information and seize the golden escape time. Greatly reduce the loss caused by the earthquake.