CN108492531A - A kind of disaster early warning system and installation method based on wireless sensor network - Google Patents

A kind of disaster early warning system and installation method based on wireless sensor network Download PDF

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Publication number
CN108492531A
CN108492531A CN201810236444.3A CN201810236444A CN108492531A CN 108492531 A CN108492531 A CN 108492531A CN 201810236444 A CN201810236444 A CN 201810236444A CN 108492531 A CN108492531 A CN 108492531A
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sensor
monitoring
early warning
container
piston
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CN108492531B (en
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叶晟
苏文莉
成爱民
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Zunyi Normal University
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Zunyi Normal University
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    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02Alarms for ensuring the safety of persons
    • G08B21/10Alarms for ensuring the safety of persons responsive to calamitous events, e.g. tornados or earthquakes

Abstract

This application discloses a kind of disaster early warning systems based on wireless sensor network,Including monitoring base station and remote central station,The monitoring base station includes monitoring outer container,The monitoring outer container surrounding distributing installation has multiple propellers in a center of symmetry,The monitoring outer container is internally provided with observation circuit plate,Accumulator and sensor unit,The sensor unit includes displacement sensor,Sensor erecting bed,Institute's displacement sensors include rotary shaft,The concentric rotation axis is fixed with the measurement motor for measuring rotary shaft amount of spin,A piston ejector ram, ejector piston is fixed below the sensor erecting bed,The sensor erecting bed is provided with the clamping bar for blocking piston ejector ram, ejector piston,The rotary shaft is connected with clamping bar,Pass through the disaster early warning system of the application,The sensor adapted in connection in use,Complicated landform can be monitored and the disaster early warning system has self-rescue function,It ensure that the integrality of equipment.

Description

A kind of disaster early warning system and installation method based on wireless sensor network
Technical field
The present invention relates to Geological Hazards Monitoring fields, and in particular to a kind of disaster alarm system based on wireless sensor network System and installation method.
Background technology
Southwestern China area, karst landform blazons, and karst landform is domestic geological disaster its main feature is that earth's surface is broken One of severely afflicated area, disaster type is complete, quantity is more, distribution is wide, influence is big, weight losses.Wherein, landslide and mud-stone flow disaster institute The characteristics of accounting example is up to 75% or more, and, randomness sudden with its and short time interior energy bring about great losses directly is endangered The security of the lives and property of the evil people, influence normal production and living, constrains ecological environment inside the province, social economy holds Supervention exhibition.
Line and wireless two major classes are mainly included for the monitoring mode of landslide and mud-stone flow disaster both at home and abroad at present. The limitation of the more monitored area geographical conditions of wired mode, system deployment is difficult, it is inconvenient to safeguard.In wireless mode, up short Mensuration monitoring accuracy is low, is easily influenced by factors such as weather;And when disposing measuring system, by geographical location, economy The limitations such as factor, technical conditions so that it is extremely difficult to arrange and recycle corresponding measuring device, and measuring device often because To have occurred and that disaster, it is buried or is damaged, can only usually become disposable apparatus, cause very big economic damage It loses, for karst not only needs to study new method early warning is monitored to disaster hotspots, also to there is adaptation to monitor Monitoring hardware system.
Invention content
The present invention provides a kind of disaster early warning system based on wireless sensor network, multiple for landform to solve to adopt now The problem that miscellaneous monitoring data are inaccurate and monitoring cost is high.
To solve the above-mentioned problems, the application provides the following technical solutions:A kind of disaster based on wireless sensor network Early warning system includes monitoring base station and remote central station, and the monitoring base station includes monitoring outer container, the monitoring outer container surrounding point Cloth is equipped with multiple propellers in a center of symmetry, and the monitoring outer container is internally provided with observation circuit plate, accumulator and sensing Device assembly, the sensor unit include displacement sensor, and sensor erecting bed, institute's displacement sensors include rotary shaft, institute It states concentric rotation axis and is fixed with measurement motor for measuring rotary shaft amount of spin, the rotary shaft outer wall is provided with winding slot, Measurement rope is fixedly connected in rotary shaft;A piston ejector ram, ejector piston is fixed below the sensor erecting bed, the sensor erecting bed is set It is equipped with the clamping bar for blocking piston ejector ram, ejector piston, the rotary shaft is connected with clamping bar;It is fixedly installed sensor below the piston ejector ram, ejector piston Mounting blocks, are provided with signal processing module and wireless communication module on the observation circuit plate, the signal processing module with pass Sensor mounting blocks are laid with signal wire, the wireless communication module and remote central station communicating wireless signals.
The operation principle of disaster early warning system is as follows:During use, need first to open up measured hole, purpose in tested area It is the various sensors of fixed measured region, such as measures whether tested region is subjected to displacement, needs that sensor will be located at Measurement head is fixed in measured hole, while in order to measure the water content in tested area, the soil moisture, and is fathomed, and is required for Respective sensor is fixed in measured hole.Various sensors, which are released, to be fixed on piston ejector ram, ejector piston, while by each sensor and being supervised Slowdown monitoring circuit partitioned signal is connected to.Sensor erecting bed is connect with piston ejector ram, ejector piston by being clamped bar, and piston ejector ram, ejector piston is in stretching state at this time, only There is clamping bar to unclamp, piston ejector ram, ejector piston just bounces back, and simultaneously switches off the physical connection between each sensor.
In massif, be easiest to monitoring base station is caused to be ruined mainly, landslide, massif collapses, and mud-rock flow etc. is made At the natural calamity of mountain deformation.The sensor for measuring mountain deformation, in this monitoring base station using displacement sensor, and position Displacement sensor is transformed again, the measurement of displacement sensor, is the measurement rope connected by monitoring base station between adjacent, works as the two Between displacement change, measure rope band move rotary shaft rotation, rotary shaft turn to it is a certain amount of after, indicate disaster may send out Raw, the amount of spin for the measurement motor being connected with rotary shaft is calculated as corresponding displacement, thus by this data transmission in Center station is gone.Monitoring base station makes their own emergency reaction simultaneously, and observation circuit plate control measurement motor continues to rotate, in measurement motor It due to measuring rope is connected by threading off in selection course, when pulling force, which reaches, to fall off, measures rope and disconnect.It measures at this time Rope is withdrawn into monitoring outer container.For measurement motor in rotary course, rotary shaft drives clamping bar movement, clamping bar transporting simultaneously Piston ejector ram, ejector piston of the release with retraction ability, piston ejector ram, ejector piston bounce back at this time during dynamic, disconnect the physical connection between sensor.It is whole A monitoring base station is now in free state, provides energy to propeller by accumulator at this time, observation circuit plate provides navigation Information;Monitoring base station entire in this way, which can be realized, saves oneself, and under the drive that monitoring base station passes through propeller, flies back to safely Side.
The advantages of this programme is:In whole process, the early warning and monitoring to disaster, while entire monitoring base station are not only realized Realization is saved oneself, and ensure that the integrality of equipment, and need not manually arrive recycling of jeopardously taking.Reduce the warp of monitoring Ji cost.
Further, in order to enable entire monitoring base station weight saving, the monitoring outer container is interior to be filled with foamed material.In this way It ensure that the better cruising ability of monitoring base station, improve its self-saving ability.
Further, sidesway occurs in measurement direction in order to avoid measuring rope, conductor rope pipe, institute is provided in the monitoring outer container It states measurement rope and is passed through the external world across conductor rope pipe.The precision for measuring displacement can thus be improved.
Further, in order to enable monitoring base station can have lasting energy, the upper surface of the monitoring outer container to fix one piece Photovoltaic panel, photovoltaic panel are connected with accumulator;Continue electric energy supplement to accumulator by photovoltaic panel, also ensures entire monitoring base station The ability continued a journey automatically.
Further, in order to enable monitoring outer container held stationary, the monitoring outer container lower surface is provided with balance base;Pacifying When dress, a horizontal plane will be provided to monitoring base station in advance by measuring position, and balance base can be placed on horizontal plane, improve Monitoring base station is detached from the success rate of disaster point.
Finally, it is provided with multiple signal jacks on the sensor mounting blocks, dropout is provided with outside sensor mounting blocks.This It is exposed outside that sample can ensure that sensor does not need too many signal wire, and can ensure piston ejector ram, ejector piston and sensing by threading off The normal connection of device also can smoothly be disengaged in retraction with sensor.
In order to ensure that entire early warning system normal work and high-precision measurement, the application also provide a kind of early warning system peace Dress method, includes the following steps:
Step 1:Measured hole is bored in the region for needing to measure;
Step 2:The sensor measured will be needed to be mounted on sensor mounting blocks, and sensor is carried out by threading off It is fixed;
Step 3, connects the signal wire between sensor and signal processing module, and sensor, wireless communication are completed in debugging The communication signal of module, signal processing module and remote central station;
Step 4:Connection measures rope, and the two neighboring measurement rope for measuring base station is threaded off by dynamometry and is connected.The dynamometry The shift length that can bear of threading off is 0.5~2 centimetre.
Further, for the local geological environment situation of more complete measurement, the sensor packet of the step 2 installation It includes:Soil moisture sensor, microwave remote sensor, Temperature Humidity Sensor and acceleration transducer.
Entire early warning system installation method is mainly concerned with the normal fortune for how effectively realizing installation and entire monitoring base station Row, its advantage is that:It only needs to drill through a measured hole in each measurement point, so that it may to realize the installation of multiple sensors so that Installation becomes simple.
Description of the drawings
Fig. 1 is the structural schematic diagram of monitoring base station;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is the schematic diagram that sensor erecting bed is connect with sensor;
Fig. 4 is the signal connection diagram of observation circuit plate;
Fig. 5 is that entire disaster early warning system applies the usage state diagram in side slope.
Specific implementation mode
Below by the further details of explanation of specific implementation mode:
Embodiment 1:
Embodiment 1 mainly discloses how before installing entire disaster early warning system and disaster generation that entire monitoring base station is such as What, which is realized, saves oneself:
A kind of disaster early warning system based on wireless sensor network as shown in Figure 1, Figure 2 and Figure 3 includes monitoring base station And remote central station, monitoring base station include monitoring outer container 1, and foamed material is filled in monitoring outer container 1;Monitor 1 surrounding of outer container point Cloth is equipped with multiple propellers 2 in a center of symmetry, and monitoring outer container 1 is internally provided with observation circuit plate 5, accumulator 6 and sensing Device assembly, sensor unit include displacement sensor, and sensor erecting bed 10, displacement sensor includes rotary shaft 7, rotary shaft 7 The coaxial measurement motor 9 being fixed with for measuring 7 amount of spin of rotary shaft, 7 outer wall of rotary shaft are provided with winding slot, in rotary shaft 7 It is fixedly connected with measurement rope 8;It is provided with conductor rope pipe 13 in monitoring outer container 1, rope 8 is measured and is passed through the external world across conductor rope pipe 13.
A piston ejector ram, ejector piston 11 is fixed in 10 lower section of sensor erecting bed, and sensor erecting bed 10 is provided with the clamping for blocking piston ejector ram, ejector piston Bar 14, rotary shaft 7 are connected with clamping bar 14;11 lower section of piston ejector ram, ejector piston is fixedly installed sensor mounting blocks 110, observation circuit plate 5 On be provided with signal processing module 4 and wireless communication module, signal processing module 4 is laid with signal with sensor mounting blocks 110 Line, wireless communication module and remote central station communicating wireless signals.Multiple signal jacks are provided on sensor mounting blocks 110, It is provided with dropout 15 outside sensor mounting blocks 110.In this way can be exposed outside to avoid the too many signal wire of sensor 16, and It can ensure the normal connection of piston ejector ram, ejector piston 11 and sensor 16 by dropout 15, it also can be smoothly de- with sensor 16 in retraction It opens.
One piece of photovoltaic panel 3 is fixed in the upper surface of monitoring outer container 1, and photovoltaic panel 3 is connected with accumulator 6;By photovoltaic panel 3 to storage Battery 6 continues electric energy supplement, also ensures the ability of entire monitoring base station continued a journey automatically.In order to enable monitoring outer container 1 is kept Steadily, 1 lower surface of monitoring outer container is provided with balance base 12;It waits when mounted, measuring position will provide to monitoring base station 1 in advance One horizontal plane, balance base 12 can be placed on horizontal plane, improve the success rate that monitoring base station is detached from disaster point.
As shown in Figure 4 and Figure 5:The application also provides a kind of early warning system installation method, includes the following steps:
Step 1:Measured hole is bored in the region for needing to measure;
Step 2:The sensor that measures will be needed to be mounted on sensor mounting blocks, and by thread off 15 pairs of sensors into Row is fixed;Sensor includes:Soil moisture sensor, microwave remote sensor, Temperature Humidity Sensor and acceleration transducer;
Step 3, connects the signal wire between sensor and signal processing module, and sensor, wireless communication are completed in debugging The communication signal of module, signal processing module and remote central station;
Step 4:Connection measures rope, and the two neighboring measurement rope for measuring base station is threaded off by dynamometry and is connected.Dynamometry is threaded off The shift length that can bear is 0.5~2 centimetre.
It is made of, acquires acquisition module, signal processing module, wireless communication module, power module at entire monitoring base station Module:Using ADXL345 3-axis acceleration sensors, SMS-II-485 soil moisture sensors, HW-M10-2 microwave remote sensors And SHT20 Temperature Humidity Sensors respectively to the environmental parameters such as disaster bodie 3-axis acceleration, soil moisture content and humiture into Row acquisition, I is followed successively by with the connecting interface of CC25302C, RS485, TTL and I2C。
Monitoring base station core uses the CC2530 chips of Ti companies production, incorporates microcontroller and RF radio frequency cores Piece is had 256KB Flash and 8KB RAM, data can be kept under various modes using enhanced 8051 kernel, is supported Hardware is debugged;It with plurality of operating modes, can be converted rapidly between different operational modes, power consumption is low, function admirable, and function is strong Greatly.
Accumulator 6 uses rechargeable battery, and voltage-stablizer AMS1117-3.3 and filter capacitor are integrated in rechargeable battery, exports Voltage is 3.3V.Rechargeable battery is connect with photovoltaic panel simultaneously.
Embodiment 2:
The possibility of disaster generation is predicted for heavy showers, the sensor frequency acquisition of monitoring base station is according to gateway node The monitored rainfall of rain sensor is adjusted, and gateway node rain sensor continues to monitor real-time rainfall, not only dynamic Monitoring base station frequency acquisition is adjusted, and rainfall is reached by remote central station by GPRS gateways.Under normal mode, monitoring base station Frequency work of each sensor set by remote central station, is generally distinguished with wet and dry season.
Rainy season, 6h~12h was primary, and monitoring base station to gateway node due to being synchronized clock information, if setting 6h is acquired herein The frequency collection relevant information of primary and dry season 12h~primary for 24 hours.Data are forwarded via multihop routing again, it is final logical It crosses GPRS gateway nodes and is sent to remote central station.Once gateway node finds that the rainfall of rain sensor record is more than threshold Value, at this time no matter wet and dry season, notice monitoring base station accelerates frequency acquisition, into abnormal patterns.
Acceleration frequency acquisition under abnormal patterns is presented staged according to rainfall size and increases, and gateway node can be according to rainfall Amount judges rainfall warning grade, and monitoring base station frequency acquisition is improved according to rainfall grade.
For example it is in III level, monitoring base station acquisition in 1 hour is primary;In IV grades, acquisition in 10 minutes is primary;In V grades 10 Second acquisition is primary.Working method in this way can extend the working time of node, reduce acquisition and the hair of invalid data It send.In order to be further reduced node energy consumption, may also set up dependent thresholds, Cai gathered data require more than each sensor parameters threshold value by The wireless communication module of monitoring base station is forwarded.System monitoring base station main program flow is as shown in the table.
Certainly by the disaster early warning system of this programme, as long as the sensor that installation accordingly monitors, so that it may expand to more The monitoring of complicated geographical environment.
For those skilled in the art, without departing from the structure of the invention, several changes can also be made Shape and improvement, these should also be considered as protection scope of the present invention, these all do not interfere with the effect and patent that the present invention is implemented Practicability.

Claims (8)

1. a kind of disaster early warning system based on wireless sensor network, including monitoring base station and remote central station, the monitoring Base station includes monitoring outer container, it is characterised in that:The monitoring outer container surrounding distributing installation has multiple propellers in a center of symmetry,
The monitoring outer container is internally provided with observation circuit plate, accumulator and sensor unit, and the sensor unit includes position Displacement sensor, sensor erecting bed, institute's displacement sensors include rotary shaft, and the concentric rotation axis is fixed with for measuring rotation The measurement motor of shaft amount of spin, the rotary shaft outer wall are provided with winding slot, and measurement rope is fixedly connected in rotary shaft;
A piston ejector ram, ejector piston is fixed below the sensor erecting bed, the sensor erecting bed is provided with the clamping for blocking piston ejector ram, ejector piston Bar,
The rotary shaft is connected with clamping bar;It is fixedly installed sensor mounting blocks, the observation circuit below the piston ejector ram, ejector piston Signal processing module and wireless communication module are provided on plate, the signal processing module is laid with signal with sensor mounting blocks Line, the wireless communication module and remote central station communicating wireless signals.
2. the disaster early warning system according to claim 1 based on wireless sensor network, it is characterised in that:The monitoring Foamed material is filled in outer container.
3. the disaster early warning system according to claim 1 or 2 based on wireless sensor network, it is characterised in that:It is described Conductor rope pipe is provided in monitoring outer container, the measurement rope is passed through the external world across conductor rope pipe.
4. the disaster early warning system according to claim 3 based on wireless sensor network, it is characterised in that:The monitoring One piece of photovoltaic panel is fixed in the upper surface of outer container, and photovoltaic panel is connected with accumulator.
5. the disaster early warning system according to claim 4 based on wireless sensor network, it is characterised in that:The monitoring Outer container lower surface is provided with balance base.
6. the disaster early warning system according to claim 5 based on wireless sensor network, it is characterised in that:The sensing It is provided with multiple signal jacks on device mounting blocks, dropout is provided with outside sensor mounting blocks.
7. the installation method of disaster early warning system according to claim 6, it is characterised in that:Include the following steps:
Step 1:Measured hole is bored in the region for needing to measure;
Step 2:The sensor measured will be needed to be mounted on sensor mounting blocks, and sensor is fixed by threading off;
Step 3, connects the signal wire between sensor and signal processing module, and sensor, radio communication mold are completed in debugging The communication signal of block, signal processing module and remote central station;
Step 4:Connection measures rope, and the two neighboring measurement rope for measuring base station is threaded off by dynamometry and is connected, the dynamometry is threaded off The shift length that can bear is 0.5~2 centimetre.
8. early warning system installation method according to claim 7, it is characterised in that:The sensor packet of the step 2 installation It includes:Soil moisture sensor, microwave remote sensor, Temperature Humidity Sensor and acceleration transducer.
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CN109686057A (en) * 2019-02-19 2019-04-26 重庆三峡学院 A kind of Geological Hazards Monitoring device based on side slope radar
CN110164092A (en) * 2019-06-28 2019-08-23 丽水莲都晶格智能科技有限公司 A kind of anti-landslide warning system of plug-in type
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CN111311895A (en) * 2020-02-10 2020-06-19 河海大学 Microwave attenuation signal joint variable frequency acquisition system for road-level environment perception

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