CN101793971A - Railway anti-disaster earthquake alarm - Google Patents
Railway anti-disaster earthquake alarm Download PDFInfo
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- CN101793971A CN101793971A CN 201010120222 CN201010120222A CN101793971A CN 101793971 A CN101793971 A CN 101793971A CN 201010120222 CN201010120222 CN 201010120222 CN 201010120222 A CN201010120222 A CN 201010120222A CN 101793971 A CN101793971 A CN 101793971A
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Abstract
The invention discloses railway anti-disaster earthquake alarm, which is used in the field of railway anti-disaster earthquake monitoring. According to an acceleration sensor, a ground acceleration value is filtered; simultaneously earthquake acceleration data is output by operating; and an alarm is given according to an acceleration threshold value of the railway anti-disaster earthquake alarm. The algorithm can utilize the characteristics of local ground noise well to filter the interference thereof out. Simultaneously a trigonometric function is operated by using a look-up table method, so that algorithm operating efficiency is improved, and effective software and hardware implementation schemes are provided for real-time judgment of the ground acceleration threshold value.
Description
Technical field
Present technique is applied to the seismic monitoring field of railway anti-disaster, relates in particular to a kind of railway anti-disaster earthquake alarm technology and system.
Background technology
The reason that causes the earth vibrations mainly contains two kinds: geologic agent and human factor.Geologic agent mainly is that the activity by the earth's crust causes the earth vibrations, all can cause the earth vibrations as earthquake, volcanicity etc.The human factor more complicated, as explosion, vehicle etc. by also causing vibrations.
Along with the development of domestic railway technology, the particularly development of high-speed railway in recent years, the warning of the disastrous consequence that causes to railway security and by geology, weather and human factor requires more and more higher.Earthquake mitigation and alarm technique become high ferro take precautions against natural calamities with disaster reduction system in a requisite ingredient.
Summary of the invention
The Threshold Alerts that this example is primarily aimed at the railway anti-disaster field requires to propose a kind of seismic algorithms and implementation.
The earthquake alarm algorithm is made up of directions X ground acceleration sequence acquisition module, Y direction ground acceleration sequence acquisition module, Z direction ground acceleration sequence acquisition module, time domain-frequency threshold modular converter, frequency spectrum vector synthesis module, frequency spectrum pickup model and alarm analysis module.
Wherein, directions X acceleration sequence acquisition module, Y directional acceleration sequence acquisition module, Z directional acceleration acquisition module are gathered the acceleration information of three directions of earthquake motion acceleration by the time sequence, produce acceleration figure and time relation curve.
Time domain-frequency domain modular converter is converted to above-mentioned acceleration time series the relation curve of acceleration vibration amplitude and frequency by digital fourier transform algorithm.Hardware system has a high capacity CPU, is used to store the number list of trigonometric function, when carrying out digital fourier transform, adopts look-up table on the algorithm.
It is synthetic that frequency spectrum vector synthesis module carries out vector to the amplitude of the respective frequencies of each direction, and the synthetic method of vector is sue for peace the again patterns of evolution of three direction squared magnitude, the amplitude R of the respective frequencies that obtains synthesizing of being shown below
The frequency pickup model carries out integration to earthquake characteristic frequency interval, obtain earthquake motion amplitude (earthquake motion maximal value), can be according to the technical requirement of railway earthquake disaster prevention, determine integrating range, prevention technique requirement as 0～80Hz, can only carry out integration, obtain the vibration amplitude of earthquake 0～80Hz interval;
The alarm analysis module compares according to earthquake alarm threshold value and the earthquake motion amplitude that disaster prevention system provides, when this is worth greater than the earthquake alarm threshold value, output alarm information, when specific implementation, system can be according to this result, drive relay,, also can pass through corresponding communication channel transfer vibration amplitude simultaneously for railway signal system, the center host computer of taking precautions against natural calamities etc. provides the node acquired signal.
The system that realizes above-mentioned earthquake alarm algorithm is made up of three directions ground acceleration transducer, data acquisition and processing unit, warning relay interface, communication interface.Described data acquisition and processing unit comprise central processing unit, program storage, data-carrier store, network interface circuit, relay interface circuit, power circuit, CF card interface circuit, clock circuit, watchdog circuit, configuration serial ports and long-range 485 interfaces, and wherein central processing unit links to each other with other parts of processing unit with data acquisition respectively.
The mathematical algorithm that the employing frequency spectrum picks up effectively as required, the frequency domain characteristic of different acceleration signals is recorded and analyzed to meter, satisfy railway earthquake disaster prevention warning requirement, and can obtain ground acceleration vibration amplitude according to the frequency spectrum condition changing frequency spectrum pick-up method of railway earthquake disaster prevention warning.This algorithm can utilize local ground noisiness, its interference of filtering well.Simultaneously,, improved the algorithm operational efficiency, for acceleration rate threshold judgement in real time provides effective software and hardware implementation owing to adopt look-up table to go trigonometric function to carry out computing.
Description of drawings
Below in conjunction with accompanying drawing the present invention is elaborated:
Fig. 1 is the seismic algorithms theory diagram;
Fig. 2 is an earthquake disaster prevention warning system entity composition frame chart;
Fig. 3 is earthquake data acquisition and processing unit circuit composition frame chart.
Embodiment
The earthquake disaster prevention warning system is made up of three directions ground acceleration transducer, data acquisition and processing unit, warning relay interface, communication interface, as shown in Figure 2.
Three direction acceleration transducers are used for measuring the ground accekeration, and output X, Y, Z directional acceleration and seasonal effect in time series curve.
Earthquake data acquisition and processing unit are used to gather X, Y, and Z directional acceleration time series data, and data are stored, handle and by relay interface output alarm information, by communication interface output acceleration amplitude information.
Warning relay interface provides the relay node for railway signal system, tractive power supply system and the center of taking precautions against natural calamities etc., and this node directly characterizes earthquake alarm information.
Communication interface provides acceleration signal for the center of taking precautions against natural calamities as required.
Data acquisition and processing unit are the cores of earthquake disaster prevention alarm unit, move corresponding program according to the earthquake disaster prevention alarm algorithm, gather and handle the ground acceleration signal.Because operand greatly, often adopts ARM series or DSP series CPU, and configuration high capacity program storage and data-carrier store, provide the corresponding interface for ground acceleration transducer, host computer telecommunication, relay drive, this locality transfers to survey to dispose, write down ground accelerating curve data simultaneously on the spot.
The circuit composition frame chart of data acquisition and processing unit comprises central processing unit, program storage, data-carrier store, network interface circuit, relay interface circuit, power circuit, CF card interface circuit, clock circuit, watchdog circuit, configuration serial ports and long-range 485 interfaces as shown in Figure 3.
The theory diagram of algorithm as shown in Figure 1.Change because the arithmetic core of algorithm is a Fourier, operand is big, and uses trigonometric function in a large number, if adopt Traditional calculating methods, can reduce operation efficiency greatly.In order to improve counting yield, adopt the pattern of tabling look-up to calculate trigonometric function, adopt high capacity program storage storage trigonometric function curve data, so that directly table look-up in the computing, greatly reduce the operand of Fourier computing, reduce requirement the CPU computing velocity; In order to increase the memory space of intermediate data, adopt high capacity SRAM to form data-carrier store simultaneously; Network interface and acceleration transducer provide interface, are used to gather the three-dimensional acceleration data sequence; Relay drive circuit provides interface for warning message output, and when needs were reported to the police, relay drive circuit drove gravitation type relay and picks up, simultaneously during alarm free information, gravitation type relay disconnects, and relay drive circuit adopts the node of gravitation type relay simultaneously, determines the operate as normal of driving circuit; Relay drive circuit adopts the dynamic security drive pattern simultaneously; Power circuit will be imported power source conversion and provide power supply for the required core power of CPU, IO power supply and for peripheral circuit; The CF card interface circuit is mainly used in system's storage and gathers three direction acceleration information sequences in real time; Clock circuit provides work clock for CPU; Watchdog circuit provides initializing signal and prevents system clock for system; The configuration serial ports provides the configuration data input and transfers measurement information output for system; Long-range 485 interfaces are the data communication interface at the earthquake alarm system and the center of taking precautions against natural calamities, and are used to upload the ground acceleration information.
Claims (6)
1. a railway anti-disaster earthquake alarm technology makes the land used acceleration transducer carry out seismic surveying, it is characterized in that,
-gather the time series of X, Y, three direction earthquake motions of Z acceleration respectively;
-described sequence is carried out Fourier transform;
-conversion gained frequency spectrum is carried out vector to be synthesized;
-frequency spectrum to vector after synthetic is in integrating range scope integrates;
-comparison earthquake alarm threshold value and earthquake motion amplitude.
2. technology as claimed in claim 1 is characterized in that, in described Fourier transform, adopts look-up table to carry out trigonometric function and calculates.
3. technology as claimed in claim 1 is characterized in that, described vector synthetic method adopts sue for peace the again pattern of evolution of the squared magnitude of three directions.
4. technology as claimed in claim 1 is characterized in that described integrating range is variable.
5. a railway anti-disaster earthquake alarm system is characterized in that, comprises three directions ground acceleration transducer, data acquisition and processing unit, warning relay interface and communication interface.
6. system as claimed in claim 5, it is characterized in that, described data acquisition and processing unit comprise central processing unit, program storage, data-carrier store, network interface circuit, relay interface circuit, power circuit, CF card interface circuit, clock circuit, watchdog circuit, configuration serial ports and long-range 485 interfaces, wherein, described central processing unit links to each other with other parts of processing unit with this data acquisition respectively.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201010120222 CN101793971A (en) | 2010-03-05 | 2010-03-05 | Railway anti-disaster earthquake alarm |
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| CN 201010120222 CN101793971A (en) | 2010-03-05 | 2010-03-05 | Railway anti-disaster earthquake alarm |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102540248A (en) * | 2011-12-31 | 2012-07-04 | 北京佳讯飞鸿电气股份有限公司 | Earthquake acceleration sensor for railway disaster prevention |
| CN102693608A (en) * | 2012-05-29 | 2012-09-26 | 北京佳讯飞鸿电气股份有限公司 | Earthquake monitoring system for railway disaster preparedness |
| CN105424164A (en) * | 2015-12-22 | 2016-03-23 | 广西瀚特信息产业股份有限公司 | Vibration detection device, system and method |
| CN106052837A (en) * | 2016-05-25 | 2016-10-26 | 西南交通大学 | Train vibration noise identifying method used in high-speed railway earthquake warning |
| CN107664767A (en) * | 2016-07-29 | 2018-02-06 | 三美电机株式会社 | Detection means and ligthing paraphernalia |
| CN113808369A (en) * | 2021-08-12 | 2021-12-17 | 杭州博雅鸿图视频技术有限公司 | Monitoring method, device and system with earthquake detection and alarm functions and camera |
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| CN1657974A (en) * | 2005-01-19 | 2005-08-24 | 天津大学 | Accelerat induction earthquake forcasting device |
| JP2007217082A (en) * | 2006-02-14 | 2007-08-30 | Mori Bill Kk | Long-period earthquake motion sensing system for large-sized building |
| CN101251603A (en) * | 2008-04-12 | 2008-08-27 | 中国石油集团西北地质研究所 | Method for synthesizing X and Z component wave field vector |
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| CN1657974A (en) * | 2005-01-19 | 2005-08-24 | 天津大学 | Accelerat induction earthquake forcasting device |
| JP2007217082A (en) * | 2006-02-14 | 2007-08-30 | Mori Bill Kk | Long-period earthquake motion sensing system for large-sized building |
| CN101251603A (en) * | 2008-04-12 | 2008-08-27 | 中国石油集团西北地质研究所 | Method for synthesizing X and Z component wave field vector |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102540248A (en) * | 2011-12-31 | 2012-07-04 | 北京佳讯飞鸿电气股份有限公司 | Earthquake acceleration sensor for railway disaster prevention |
| CN102693608A (en) * | 2012-05-29 | 2012-09-26 | 北京佳讯飞鸿电气股份有限公司 | Earthquake monitoring system for railway disaster preparedness |
| CN105424164A (en) * | 2015-12-22 | 2016-03-23 | 广西瀚特信息产业股份有限公司 | Vibration detection device, system and method |
| CN105424164B (en) * | 2015-12-22 | 2019-06-18 | 广西瀚特信息产业股份有限公司 | A kind of vibration detecting device, system and method |
| CN106052837A (en) * | 2016-05-25 | 2016-10-26 | 西南交通大学 | Train vibration noise identifying method used in high-speed railway earthquake warning |
| CN106052837B (en) * | 2016-05-25 | 2018-12-25 | 西南交通大学 | One kind is for train vibration noise recognizing method in high speed rail earthquake pre-warning |
| CN107664767A (en) * | 2016-07-29 | 2018-02-06 | 三美电机株式会社 | Detection means and ligthing paraphernalia |
| CN113808369A (en) * | 2021-08-12 | 2021-12-17 | 杭州博雅鸿图视频技术有限公司 | Monitoring method, device and system with earthquake detection and alarm functions and camera |
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Application publication date: 20100804 |