CN104183093A - Monitoring and early warning system for landslide disaster - Google Patents
Monitoring and early warning system for landslide disaster Download PDFInfo
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- CN104183093A CN104183093A CN201310200402.1A CN201310200402A CN104183093A CN 104183093 A CN104183093 A CN 104183093A CN 201310200402 A CN201310200402 A CN 201310200402A CN 104183093 A CN104183093 A CN 104183093A
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Abstract
The invention relates to a monitoring and early warning system for a landslide disaster. The system comprises piezoelectric cables, a front-end signal processor, a system host, a field alarm device, a wireless transmission device, and a monitoring center and the like. A plurality of piezoelectric cables are buried inside a side slope soil body and are used as sensors to carry out processing and analyzing on obtained signals; the field alarm device emits early warning prompting information in real time at field; the wireless transmission device sends the information to a monitoring center in real time by a GSM wireless network and processing, analyzing and displaying are carried out. According to the invention, the invention is mainly applied to monitoring of landslide stability; and functions of field real-time early warning, remote wireless disaster information transmission, and remote data displaying and the like can be realized. Moreover, the system having the characteristics of simple arrangement, low cost, and high practicability and the like can be effectively applied to large-area slide slope deformation monitoring and disaster forecasting.
Description
Technical field
The invention belongs to geologic hazard safe and intelligent monitoring technical field, be specifically related to a kind of disaster monitoring system based on piezoelectric cable sensing technology, can reflect in real time sliding mass stable case, and early warning in time.
Background technology
China is one of the most serious country of geologic hazard in the world, and the geologic hazards such as landslide, avalanche, rubble flow happen occasionally.According to rough Statistics, the total relatively large avalanche in the whole nation, landslide, mud-stone flow disaster point more than 7000 are located.Closely during the last ten years, annual death toll nearly 1000 people, cause tremendous economic loss to reach over ten billion Yuan, and its impact should not be underestimated.The geologic hazard that brings huge life and property loss has caused the great attention of relevant government department.On the one hand to actively develop geological hazard control engineering, build on the other hand Geological Hazards Monitoring early warning system also very necessary.
In existing landslide monitoring early warning technology, a kind of is to adopt total powerstation, GPS to locate to measure the relative displacement value of side slope face point.Wherein total station accuracy is the highest, and cost is also the highest simultaneously.GPS is applicable to sliding mass on a large scale and measures, and precision is lower, and system cost is higher.Another kind is the direct or indirect foundation as landslide disaster early warning judgement of related property parameter of laying the sensor collection sliding masses such as rain gage, earth pressure gauge, inclinometer, displacement meter, data accuracy is high, but also there are the distinct disadvantage such as the sensor points of laying is more, expensive, monitoring area is not enough, be difficult to contain vast disaster hidden danger area, and instrument is subject to brokenly ring, stability is difficult to the factors such as guarantee and restricts it and promote the use.
Current more widely used classic method is that GPS and displacement transducer carry out early warning and monitoring to side slope.All there is a problem in these two kinds of methods: no matter be GPS or displacement sensor for pull rope, measuring is all the measurement of point, if need to measure the domatic a lot of such points of laying that need.For the measurement on some landslide, precision less demanding, as long as can roughly measure slope body deformability.Obviously classic method is expensive, is not suitable for the use of large area situation.
Summary of the invention
Object of the present invention is exactly the problem that will solve the early warning of above-mentioned landslide.The invention provides a kind of landslide disaster early warning system based on piezoelectric cable sensing technology, this system not only can realize the surperficial monitoring (, plane surveying) in landslide on a large scale, also can greatly reduce monitoring cost, is conducive to popularization and application.
Technical scheme of the present invention is: adopt piezoelectric cable as a kind of linear piezoelectric thin film sensor, imbedded in the Slope such as highway, the railway body that geologic hazard takes place frequently.In the time that slope deforming slides, piezoelectric cable is compressed or stretch, and can produce piezoelectric effect, produces and is proportional to electric charge or the voltage signal of pressure.Passed through a series of signal Treatment Analysis of front end signal processor and system host, give the alarm by the field alert device scene connecting, and by radio transmitting device, the deformation information monitoring is sent to Surveillance center in real time, after system software analysis is processed, show with figure and forms mode intuitively.
The present invention can realize real-time large-area plane disaster monitoring, and on-the-spot real-time early warning has the function such as long distance wireless communication, teledata demonstration simultaneously, has reduced monitoring cost.
Brief description of the drawings
Accompanying drawing is system schematic of the present invention.
In figure: 1, piezoelectric cable; 2, front end signal processor; 3, system host; 4, field alert device; 5, radio transmitting device; 6, Surveillance center.
Embodiment
This landslide disaster monitor and early warning system generally comprises the front end signal processor of many piezoelectric cables and respective numbers, and system connects with reference to accompanying drawing.Respectively the each ingredient of the present invention is further illustrated below in conjunction with accompanying drawing.
1, piezoelectric cable
Piezoelectric cable [1] is to manufacture with piezoelectric membrane the cable forming, piezoelectric polymer is processed into concentric cable (piezoelectric is between heart yearn and shielding line), it is that sensing impacts or vibration that piezoelectric cable exceedes one of advantage of other sensor, when cable is under pressure or is stretched, just can produce voltage signal.The output of the high mechanical properties of piezoelectric cable and good linearity, high sensitivity make that the detection of low level vibration signal becomes easily, have dynamic range wide, highly sensitive, without power supply, the easy feature such as installation, for intellectual monitoring field.
Native system is imbedded certain depth in side slope soil by some piezoelectric cables [1] by certain position relation (as parallel array), in the time that distortion occurs to slide slope soil, the piezoelectric cable of diverse location is under pressure or is stretched and will produce voltage signal.The environmental parameter of front end signal processor [2], system host [3] and Surveillance center [6] is set after laying.
2, front end signal processor
Front end signal processor [2] comprises logic gates, voltage transformation module, wave filter etc., be connected with piezoelectric cable [1], by the faint signal of receiving amplify, shaping, filtering, after a series of processing, obtain digital signal.Front end piezoelectric cable changes vibration signal into electric signal, and be sent to signal processor, signal processor amplifies the feeble signal receiving, after a series of processing such as shaping, filtering, then pass through certain algorithm process, judges whether output alarm signal.If exceed the alarm threshold value of setting, the actuating of relay, output alarm signal.Alerting signal is connected to and in alarm host machine, is completed warning by special feeder line.The electric signal that piezoelectric cable is produced is processed, judgement, output dry contact signal.
3, system host
System host [3] is provided with multiple signaling interfaces, is connected with front end signal processor [2], adopts accumulator or solar panel power supply, comprises the parts such as RS232/RS485 communication module, Digital Signal Analysis module, power failure protection module, lightning-protection module.System host receives the signal that each front end signal processor is sent, and carries out certain Algorithm Analysis processing.After storage, slope deforming communication is to radio transmitting device [5], and whether automatic decision exceedes setting threshold simultaneously, if exceeded, triggers field alert device [4].
4, field alert device
Field alert device [4] is made up of warning light and loudspeaker, is connected with system host, is arranged on the remarkable position that people can see.After triggering, send audible and visible alarm, early warning in time.
5, radio transmitting device
Radio transmitting device [5] comprises gsm module, and slope deforming information is sent to Surveillance center with the form of network or note, and data transmission frequency can arrange as required.
6, Surveillance center
Surveillance center [6] is provided with relevant system software, receives and process the information of being sent by radio transmitting device [5], and slope deforming information is shown intuitively on display screen.What system software adopted is the framework of client/server, comprises the functions such as data communication, storage, data reproduction, figure demonstration, can directly show side slope status information.
Innovation
This invention patent is a kind of landslide disaster monitoring and warning technology, and it has adopted more cheap piezoelectric cable as sensor, has made up the deficiency of the little and high cost of traditional GPS and Sensor monitoring method monitoring area, and has fully taken into account terseness and practicality.When sliding mass deforms while reaching early warning value, by on-the-spot warning horn or the gsm wireless transmitting device remote transmission data of setting up, make people obtain rapidly and accurately landslide disaster information, the masses are greatly facilitated, system arranges easily, and performance period is short, and cost is lower, practical, have promotional value.
Claims (3)
1. a landslide disaster monitor and early warning system, is characterized in that, this early warning system comprises piezoelectric cable, front end signal processor, system host, field alert device, radio transmitting device and Surveillance center.
2. landslide disaster monitor and early warning system according to claim 1, is characterized in that, described piezoelectric cable is all embedded in the inner diverse location of slope soil, and is connected with front end signal processor.
3. landslide disaster monitor and early warning system according to claim 1, it is characterized in that, in the time there is a certain amount of slip distortion in sliding mass, pressure signal is converted to electric signal by each piezoelectric cable of diverse location, through front end signal processor processing, further analyze after judgement by system host again, field alert device just can send corresponding alarm according to the difference of the deformation extent of sliding mass, utilize radio transmitting device that slope body deformability information exchange is crossed to gsm wireless network simultaneously and send to Surveillance center, be kept at and in server, carry out Treatment Analysis and demonstration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310200402.1A CN104183093A (en) | 2013-05-27 | 2013-05-27 | Monitoring and early warning system for landslide disaster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310200402.1A CN104183093A (en) | 2013-05-27 | 2013-05-27 | Monitoring and early warning system for landslide disaster |
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| CN104183093A true CN104183093A (en) | 2014-12-03 |
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| CN201310200402.1A Pending CN104183093A (en) | 2013-05-27 | 2013-05-27 | Monitoring and early warning system for landslide disaster |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104821066A (en) * | 2015-04-30 | 2015-08-05 | 广西大学 | Side slope monitoring and early warning system |
| CN106772626A (en) * | 2015-11-25 | 2017-05-31 | 中央大学 | Structure collapse monitoring and early warning system and method |
| CN108564769A (en) * | 2018-06-12 | 2018-09-21 | 中国地质环境监测院 | A kind of distributed landslide monitoring early warning system and method based on narrowband Internet of Things |
| CN110361045A (en) * | 2018-04-09 | 2019-10-22 | 深圳市凤英凤仪科技有限公司 | A kind of monitoring device |
| CN112254908A (en) * | 2020-09-11 | 2021-01-22 | 温州大学 | Piezoelectric sensor and self-powered monitoring method for simulating dam slope collapse by using same through vibrating table |
| CN115198815A (en) * | 2022-07-27 | 2022-10-18 | 东南大学 | Side slope internal deformation distributed monitoring system based on piezoelectric self-sensing geotechnical cable and construction method |
-
2013
- 2013-05-27 CN CN201310200402.1A patent/CN104183093A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104821066A (en) * | 2015-04-30 | 2015-08-05 | 广西大学 | Side slope monitoring and early warning system |
| CN106772626A (en) * | 2015-11-25 | 2017-05-31 | 中央大学 | Structure collapse monitoring and early warning system and method |
| CN110361045A (en) * | 2018-04-09 | 2019-10-22 | 深圳市凤英凤仪科技有限公司 | A kind of monitoring device |
| CN108564769A (en) * | 2018-06-12 | 2018-09-21 | 中国地质环境监测院 | A kind of distributed landslide monitoring early warning system and method based on narrowband Internet of Things |
| CN112254908A (en) * | 2020-09-11 | 2021-01-22 | 温州大学 | Piezoelectric sensor and self-powered monitoring method for simulating dam slope collapse by using same through vibrating table |
| CN115198815A (en) * | 2022-07-27 | 2022-10-18 | 东南大学 | Side slope internal deformation distributed monitoring system based on piezoelectric self-sensing geotechnical cable and construction method |
| CN115198815B (en) * | 2022-07-27 | 2023-08-25 | 东南大学 | Side slope internal deformation distributed monitoring system based on piezoelectric self-sensing geotechnical cable and construction method |
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Application publication date: 20141203 |