170 results about "Earthquake detection" patented technology

The present invention describes the use of a space-based Extremely Low Frequency (ELF) magnetic field detector in conjunction with ground-based network of ELF magnetic field detectors. In particular, a space based ELF detection system can be used to perform a wide area search and find precursor earthquake signals in both known and unknown earthquake zones, and a ground-based network of ELF detectors can be used to verify that the signals are indeed earthquake generated signals. The use of this invention will minimize cost and manpower necessary to effectuate an accurate and reliable earthquake detection system.

A multi-function replaceable modular LED lamp includes a lamp base, a lampshade, a plurality of LED modules, a power supply control circuit board, and a detector. The lampshade is disposed on the lamp base. The plurality of LED modules is detachably disposed in the lamp base and electrically connected to the power supply control circuit board. The detector is detachably disposed on the lamp base and electrically connected to the power supply control circuit board. The detector has a specific function, such as, an earthquake detection, a human body detection, a disaster detection, an alarm detection and the like. The LED modules, the detector and the other parts of the present invention are replaceable with ease, which has the advantages of environmental protection and energy saving.

A system for remotely operating endpoint devices, such as valves for utility services, comprises a server, one or more network access hubs, and one or more endpoint devices. The network access hubs communicate with the server through a network and communicate wirelessly with the endpoint devices. The network access hubs transmit instructions to the endpoint devices to control the operation of the endpoint devices. The network access hubs may also comprise earthquake detection circuits to detect possible earthquakes and transmit instructions to the endpoint devices to close valves accordingly.

An improved area earthquake warning system based on distributed decision making method, which makes such a system affordable in the region where wired and wireless mobile communication infrastructures are too expensive to build. The present invention can provide seconds, even tens of seconds for users to seek shelter to reduce injuries and lives lost. An exemplary embodiment of the invention described herein comprises a network of earthquake detection sites covering a geographic region with four types of earthquake detection sites. Instead of sending all raw ground motion signals to a remote central processing site, these detection sites send processed earthquake parameters to a nearby alarm site to decide if an earthquake alarm broadcasting should be triggered. This method shortens the response time, decreases the false alarm rate, and provides unlimited scalability. Further more, this invention provides self-check mechanism to eliminate system malfunction time.

The invention belongs to the field of exploration geophysics, and particularly relates to a carbonatite oil and gas reservoir crack earthquake detection method. The method comprises the steps of: carrying out amplitude versus offset and azimuth angle analysis, speed versus offset and azimuth angle analysis, frequency versus offset and azimuth angle analysis respectively based on pre-stack seismic azimuth angle dataset, further carrying out ellipse fitting respectively to obtain a crack development azimuth angle, and predicting a crack development azimuth through a seismic attribute comprehensive analysis way; carrying out quality factor parameter extraction, anisotropic parameter inversion and non-hyperbolic moveout velocity analysis respectively based on pre-stack seismic trace dataset and shear wave velocity data, and predicting a reservoir crack development region by comprehensively utilizing the parameters above through a seismic attribute comprehensive analysis way. The carbonatite oil and gas reservoir crack earthquake detection method can give more comprehensive consideration to the geology of the reservoir and the physic characteristics of the globe, and the estimated crack azimuth and the predicted crack development region are more exact.

A multi-function replaceable modular LED lamp includes a lamp base, a lampshade, a plurality of LED modules, a power supply control circuit board, and a detector. The lampshade is disposed on the lamp base. The plurality of LED modules is detachably disposed in the lamp base and electrically connected to the power supply control circuit board. The detector is detachably disposed on the lamp base and electrically connected to the power supply control circuit board. The detector has a specific function, such as, an earthquake detection, a human body detection, a disaster detection, an alarm detection and the like. The LED modules, the detector and the other parts of the present invention are replaceable with ease, which has the advantages of environmental protection and energy saving.

The invention relates to a detection method for the coal mine rock burst. The detection method specifically comprises the steps of coal mine rock burst early warning detection, coal mine rock burst danger area classification and coal mine rock burst division. A mine vibration detector and a micro-earthquake detection system are installed in a mine in advance to carry out early warning detection on the rock burst in the coal mine; then through coal mine rock burst danger area classification, danger areas can be accurately detected; finally coal mine rock burst division is carried out, and therefore energy-gathered rock stratums in mining areas can be cut, energy can be fully released in the explosion process, and the mining safety can be improved. According to the invention, early warning, detection and division and danger treatment are carried out on the coal mine rock burst, and therefore coal mining is more accurate and safer.

A set of seismic detectors is distributed throughout a defense zone in communication with a set of attack or other controllable devices. A seismic signal source controlled by a zone defense coordinator communicates at scheduled times to the seismic detectors and through them to the associated devices to convey mission critical information. The seismic detectors and the attack devices are controlled singularly and / or collectively by self-contained processors. The seismic source may be at a fixed site and is substantially repeatable as well as controllable. The system may be specially adapted to a wide range of terrains including land and water; and from very shallow to very deep water. Targets may be characterized in terms of their typical seismic signatures and the same hardware system used for seismic communication may be also programmed for target detection and device activation.

The present disclosure relates to approaches for detecting and monitoring for earthquakes using a control unit of a security system. A security system may include a plurality of sensors that detect alarm conditions and send alarm condition messages to a control unit for the security system. The control unit may be communicatively coupled to the sensors and configured to receive the alarm condition messages from the sensors. The security system may also include an earthquake sensor that senses earthquake conditions and sends an earthquake condition message to the control unit if it detects the earthquake condition. The control unit may include an alarm module. The control unit causes the alarm module to generate an alarm in response to receiving the earthquake condition message from the earthquake sensor.

The invention discloses an earthquake detecting method with phase array; it arranges several controllable epicenters collinearly with even interval. The scanning signal sent by each controllable epicenter overlaps in some direction in phase through controlling the delay or the phase difference of the controllable epicenter, the vibration signal is reinforced, thus realizes the orientation of earthquake beam, thus the earthquake detection is possible. Using the phase array method, it provide an effective method for earthquake detection of tilted geologic body, realizes oriented earthquake detection, additional, it also upgrade the detecting depth and the resolution.

The invention relates to a detection method which is mainly used for coal mine underground detection, in particular to a transient electromagnetic simulated earthquake detection method used for coal mine underground. According to the method, measured data are added for each detection grid, influences caused by environmental factors in a roadway are substantially weakened, the density of detection data passing abnormal bodies is enhanced, and transient field data are converted into virtual wave field data, so that the influence caused by the volume effect of the electromagnetic method is weakened; meanwhile, the advanced fine processing technology of earthquakes is adopted for the method, fine explanation of geological anomalies is facilitated, and the detection accuracy for potential mine water disaster hazards can be remarkably improved.

An earthquake early warning method for an earthquake detecting system includes utilizing support vector regression (SVR) method to build an earthquake detecting model according to the a plurality of vectors, wherein each of the vectors is corresponding to an earthquake information and a ground motion intensity; detecting a new earthquake information of a new earthquake and generating a specific vector according to the new earthquake information when the new earthquake occurs; and predicting a new ground motion intensity of the new earthquake according to the specific vector and the earthquake detecting model.

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.

A remote monitoring system includes: an earthquake detection control unit (12) for an object to be monitored, the unit having earthquake sensors (15, 16) for detecting a first and a second signal transmitted with a time difference upon occurrence of an earthquake, a controlled operation start signal generation unit for transmitting a switching signal to start a controlled operation mode of an elevator to an operation control unit (11) upon detection of the first signal, an elevator stop instruction signal generation unit for transmitting an elevator stop instruction signal to the operation control unit (11) upon detection of the second signal, and an earthquake detection signal transmission unit for transmitting the sensor detection signal via a communication line (3) upon detection of the second signal; and a monitoring device (2) connected to the communication line (3) for monitoring the sensor detection signal transmitted from the earthquake detection control unit (12).

The invention provides a signal time-frequency function obtaining method. According to the method, fractional Fourier transformation and WVD transformation are combined together, fractional Fourier transformation can overcome the defects of traditional STFT and has good time-frequency aggregation on linear frequency modulation signals particularly, therefore, the method has special advantages when time-frequency analysis is conducted on unstable signals, and fractional Fourier transformation has no cross-term interference. On the basis of the reasons, the method has the advantages of being high in calculation accuracy, high in anti-noise performance and the like and can be applied to the various fields such as earthquake detection, sonar detection and vibration detection.

The invention relates to an online automatic monitoring device for hydrogen of earthquake precursor. The device comprises a gas-carrying port, a sampling intake and a vent, wherein the gas-carrying port, a flow controller, a digital flow meter and a purifier are sequentially connected; after being merged with a pipeline on which the sampling intake is arranged, an output end of the purifier is connected with an input end of a separation column; an output end of the separation column is connected with a gas inlet of a hydrogen sensor; a gas outlet of the hydrogen sensor is connected with the vent; a connecting pipeline between the flow controller and the purifier is provided with the digital flow meter; and the hydrogen sensor is electrically connected with a signal amplifier which is connected with an SCM (single chip microcomputer) or an industrial computer connected with a display. The hydrogen detecting limit reaches 1 multiplied by 10<-11>L (10 ppt), which is lower than that of the existing hydrogen sensors at home and abroad by 6 order of magnitude; the sensitivity is high and the online automatic monitoring device can fully meet the requirement of earthquake detection; and the device can realize the automatic, timed and quantitative online monitoring with simple operation, is applicable to all seismograph stations, can realize the unattended operation and also can largely enhance the accuracy of earthquake forecasting.

The invention discloses a comprehensive multifunctional alarming emergency life-saving communication control intelligent service system. The system comprises a host; and the system further comprises a earthquake detection module, a fire detection module, a toxic and harmful gas detection module, a flammable and explosive gas detection module, a theft detection module, a radioactive nuclear radiation detection module, a camera, a sound acquisition module, an emergency module, a communication module, an entertainment psychological comfort module and an alarming prompting module, which are respectively connected with the host. The system integrates functions of earthquake help calling and alarming, fire alarming, toxic and harmful gas alarming, theft alarming, radioactive nuclear radiation alarming and flammable and explosive gas alarming together, moreover, the system can provide entertainment, psychological counseling and the like for the trapped person. Usually, the system can be as a communication device, emergency lighting device, a household appliance control center and the like.

The invention discloses a seabed earthquake detection device and method. The seabed earthquake detection device is buried in seabed sediments, so the device and the seabed are coupled effectively, and seismic signals will not distort due to poor coupling. The noise of the device caused by flushing of ocean currents can be reduced effectively, and a seismic signal to noise ratio is higher. Moreover, loss risks of the device caused by fishery activities can be handled effectively. Through adoption of a releasing mechanism and a pneumatic popup mechanism, the seabed earthquake detection device can be recovered automatically, so time is saved and labor is saved. Meanwhile, a mechanical popup mechanism is adopted to further enable an earthquake detector to be quickly disengaged from a first housing, so the detector floats upwards to a water surface and is recovered.

The invention provides an earthquake control running system of elevator. When longperiod earthquake happens to building, the safety of passenger in the elevator of the building can be assured and the damage of the machine can be reduced to minimum limit. When a longperiod earthquake detection device (201) detects longperiod earthquake, the control running of elevator is performed. And, when the longperiod earthquake detection device detects longperiod earthquake, the first control running of elevator is performed to make the elevator move to the nearest floor to stop and then the passenger can go out from elevator car safely; and then the second control running of elevator is performed to male the elevator car move to preset position which not effected by shocking of longperiod earthquake.

The present invention discloses an earthquake detection control system, comprising: a detection device, having a plurality of vibration sensors and a microprocessor, the detection device uses the ON / OFF states of the vibration sensors to detect the occurrence of earthquake and uses the microprocessor to calculate the number of the ON / OFF states so as to obtain vibration data; a central monitor computer 2 for receiving, analyzing and judging the vibration data and outputting an output signal representing earthquake intensity; and a control device 3 for generating a control signal according to the output signal so as to perform a predetermined control action.

The invention discloses a down-hole coal seam earthquake CT detection vibroseis and method based on seismal waves excited by a spring. The down-hole coal seam earthquake CT detection vibroseis is characterized by comprising a spring striking mechanism and a power mechanism, wherein the spring striking mechanism is installed inside a sleeve (11), the sleeve (11) is fixedly installed in a hole drilled in a roadway wall through a fixing mechanism, the spring striking mechanism comprises the spring (12), a hammerhead (15) and a base plate (16), one end of the base plate (16) is inserted into the sleeve (11), the other end of the base plate (16) is located outside the sleeve (11) and abuts against the bottom of the drilled hole, the spring (12) drives the hammerhead (15) to strike the base plate (16), and the end, outside the sleeve, of the base plate (16) strikes the bottom of the hole, so that the controllable seismal waves are generated in a coal seam; a guide groove is formed in the hammerhead (15), movement guiding is achieved through a guiding pin (14) installed on the sleeve (11), and the power mechanism is used for driving the hammerhead (15) to compress the spring (12), so that the hammerhead (15) is in the excited state. The down-hole coal seam earthquake CT detection vibroseis is simple in structure and easy to obtain.

The invention discloses an earthquake detection monitoring system for detecting an underground water level. The system comprises a receiving module for receiving data characteristic information of a water level current value or voltage value; a sending module for sending the characteristic information to a monitoring module; the monitoring module for receiving the characteristic information and extracting prestored information corresponding to the characteristic information; a comparison module for comparing the characteristic information with the prestored information, and performing isolation storing by taking the characteristic information which exceeds a prestored information scope as preliminary abnormal property information; and a determination module for determining whether the preliminary abnormal property information is abnormal property information, and deleting the abnormal property information if it is determined that the preliminary abnormal property information is the abnormal property information. According to the earthquake detection monitoring system for detecting the underground water level, the automatic monitoring is realized based on a single-chip microcomputer system, the detection result is accurate, and error information is effectively isolated and deleted.

Described herein are embodiments of an electromagnetic system that can be used to replace the traditional hydraulic oil systems that actuate mass movement. The embodiments described herein provide wide frequency range operation, ground force application with high fidelity, and low environmental impact. Embodiments described herein can be used for seismic exploration and vibroseis applications, among other uses.

The invention relates to a portable geological anomaly seismic detection system and method. The system includes a seismic signal receiving device which uses a linear movable sensor cascade body formed by a plurality of roller type seismic sensors through a multi-connecting-rod shockproof support. Wave-detector core bodies are arranged in rollers of the roller type seismic sensors. A wireless seismic acquisition base and an external triggering device are installed on the multi-connecting-rod shockproof support. A hypocenter device is arranged beside the multi-connecting-rod shockproof support and is connected to the external triggering device. The wireless seismic acquisition base is respectively connected to the wave-detector core bodies and the external triggering device. The portable geology abnormity seismic detection system and method are suitable for abnormity detection and geological diagnosis within 50 meters of urban underground. Because the wave-detector core bodies are fixed at roller shaft parts, the nondestructive detection is realized under the condition of self weight coupling, which is really different from the wave-detector arrangement in the traditional sense, and the work efficiency is improved.

The present invention discloses an optical fiber ground earthquake detection method and system. The method comprises: fixing several optical fiber earthquake detectors on a sensing optical cable at intervals to form a row of sensing units, combining several rows of sensing units to form an optical fiber earthquake detector network; laser emitted by a laser device enters an optical branching deviceand is split into several rows of pulsed light signals, the pulsed light signals separately enter several circulators, and each path of pulsed light is uni-directionally transmitted to a port II by aport I in a circulator, and enters each row of sensing units; the pulsed light signals are transmitted on the detector to generate Rayleigh scattering light, the Rayleigh scattering light and Rayleigh backscattering light are transmitted to the port II of the circulator, are output by a port III of the circulator, are converted into an electrical signal after detection of a photoelectric detector, the electrical signal enters a signal processing module, and the signal process module extracts a vector or three-dimensional earthquake signal according to a demodulated vibration signal. The method and the system can implement reusing and network formation of detectors, and can implement large-range quasi-distributed vector or three-dimensional earthquake signal detection.

The invention discloses a highway pavement settlement monitoring and early warning system, which belongs to the technical field of settlement monitoring and early warning. The highway pavement settlement monitoring and early warning system comprises a settlement detection unit, an auxiliary detection device, a relay device and a monitoring center, wherein the settlement detection unit comprises multiple displacement sensors, and the multiple displacement sensors are located at the lower end of the pavement and located in a roadbed; the auxiliary detection device comprises a video acquisition device, an automobile weighing device, a vehicle counting device and an earthquake detection device; the earthquake detection device is located at the lower end of the pavement and located in the roadbed; and the relay device comprises a data acquisition unit, a wireless transmission unit and an emergency communication device. The settlement of the highway pavement can be monitored in real time; due to acquisition of multiple data, a worker can analyze the causes of pavement settlement in many ways more conveniently, comprehensive understanding of monitored road sections by a monitoring centeris realized, and hidden safety hazards caused by settlement of the highway can be eliminated in time.

The invention discloses a seismic detection system of detecting an underground water level. The seismic detection system comprises a sensor, an A / D conversion module and a microprocessor module, wherein the sensor is used for collecting analog signals of gage pressure or absolute pressure of the detected water level; the A / D conversion module is used for converting the analog signals collected by the sensor into corresponding digital signals, and transmitting the digital signals to the microprocessor module; the received digital signals are sent to a storage module through the microprocessor module and are stored, whether the received digital signals exceed a pre-storage measurement range is judged according to the received digital signals, and a sound-light alarm is given in a driven mode after the received digital signals exceed the pre-storage measurement range. The seismic detection system of detecting the underground water level conducts automatic detection based on a single chip microcomputer system, and detection results are accurate.

The invention discloses a distributed mine earthquake detection method and device and relates to the field of underground coal mine safety monitoring. The distributed mine earthquake detection method comprises the steps that multiple channels of quake detection devices are arranged on a device or area to be detected in a distributed mode; after a server provides a starting signal, high-accuracy synchronous quake detection begins to be performed, and the acquired signal is received and processed by devices and transmitted to the cloud server through the Ethernet; the server performs data fusion analysis processing on mass information and then provides the processed information for users. Hardware of the distributed mine earthquake detection device comprises a quake detection and conversion unit, a microcontroller unit, a human-computer interaction unit, a storage unit, a communication unit, a time synchronous unit and the server. The distributed mine earthquake detection method and device has the advantages that quake signals with high sensitivity and a large dynamic range can be detected, frequency response characteristics are wide, data can be transmitted quickly in a nondestructive mode, networked synchronization and focus positioning accuracy under a distributed environment is high, and the system is high in capacity, strong in expansion capability and low in expansion cost.

Provided is a method and equipment for evaluating the imaging effect of a three-dimensional earthquake observing system. The method comprises the steps of leading in data of the earthquake observing system, carrying out reranking on earthquake detection pairs in the data of the earthquake observing system according to surface element positions, setting a target region and selecting a plurality of target point positions in the target region, carrying out the following procedures on each target point position of the selected target point positions: calculating the earthquake wave migration imaging coefficient of each earthquake detection pair in the data of the earthquake observing system in the target point positions, adding all the earthquake wave migration imaging coefficients of all the earthquake detection pairs in the data of the earthquake observing system in the target point positions to obtain the final earthquake wave migration imaging coefficients of the target point positions, and drawing the earthquake wave migration imaging distribution diagram of the target area according to the final earthquake wave migration imaging coefficients of the target point positions in the target area. The method and equipment achieve the quantitative evaluation of earthquake wave migration imaging quality, and improve the fidelity of earthquake collected data.

The invention discloses an earthquake detection system consisting of a vibration detection module, a magnetic field detection module, a processing module and an alarm module. The vibration detection module includes an X shaft vibration detection unit, a Y shaft vibration detection unit, and a Z shaft vibration detection unit, wherein the three units are used for respectively detecting vibration signals at an X shaft direction, a Y shaft direction, and a Z shaft direction; the magnetic field detection module is composed of an X shaft magnetic field detection unit, a Y shaft magnetic field detection unit, and a Z shaft magnetic field detection unit, wherein the three units are used respectively for detecting magnetic variation signals at the X shaft direction, the Y shaft direction, and the Z shaft direction; the processing module caries out processing on the vibration signals and the magnetic variation signals and generates an alarm signal based on the vibration signals and the magnetic variation signals; and the alarm module carries out alarming according to the alarm signal. Compared with the prior art, the provided detection system has the following beneficial effects: earthquake detection can be carried out dynamically in real time in terms of terrestrial magnetism variation and vibration variation; detection can be carried out easily; and the detection precision is high. In addition, the invention also discloses an earthquake detection method.