CN204680160U - A kind of mountain landslide supervision device based on PNI magnetic sensor array - Google Patents

Abstract

A kind of mountain landslide supervision device based on PNI magnetic sensor array, comprise sensor array, signal transacting and communication device, PC host computer, and being positioned at the permanent magnet of landslide layer, the process of sensor array connection signal and communication device, signal transacting is connected PC host computer with communication device.The duplicate PNI magnetic sensor module of cover more than described sensor array comprises, often each axle of cover PNI magnetic sensor module are completely orthogonal, position is fixed.Described signal transacting and communication device comprise multi-microprocessor module, each microprocessor module connects corresponding a set of PNI magnetic sensor module, the magnetic field data that signal transacting and communication device record for gathering described PNI magnetic sensor module, and be uploaded to PC host computer.A kind of mountain landslide supervision device based on PNI magnetic sensor array of the utility model, not only significantly can monitor the existence of landslide, have convenient installation simultaneously than traditional deformation based sensor.This device possesses good operability, reduces the probability by mistake surveyed.

Description

A kind of mountain landslide supervision device based on PNI magnetic sensor array

Technical field

A kind of mountain landslide supervision device based on PNI magnetic sensor array of the utility model, belongs to magnetic orientation and mountain landslide supervision field.

Background technology

Landslide serious threat the people's lives and property safety, destroys the facility such as building, highway, railway, causes huge economic loss to country, is one of the most serious geologic hazard of China.The complex genesis of landslide, comprises earthquake, earth movement, precipitation, river degradation, groundwater activities, human factor etc., prediction difficulty.Therefore, Real-Time Monitoring carries out to landslide necessary.Conventional mountain landslide supervision method mainly contains: Macroscopic Anomalies observation empirical method (observing according to animal anomaly reaction, the obvious displacement of earth's surface thing, earth subsidence, ground cleave etc.), geophysical prospecting, displacement-measurement procedure, water level abnormality analytic approach, GPS localization method, aerial survey remote sensing method and ground sound method etc., but above-mentioned monitoring method and instrument mostly corresponding have a monitoring and prediction validity and the deficiency such as ageing poor, operating structure and implementation procedure complexity.In addition in the prior art, such as based on number of drawbacks such as mountain landslide supervision device, DTY type ground these monitoring methods such as electric detection instrument utilizing natural electric magnetic wave to develop of fiber-optic grating sensor and device ubiquity cost is high, equipment component erection difficulties, there is very large limitation in actual applications.The Landslide Monitoring device that high precision, low cost, energy robotization are measured in real time still has wide market outlook.Based on above-mentioned shortcoming, develop the mountain landslide supervision device that a set of cost is low, precision is high, energy robotization shows in real time and seem particularly important.

Summary of the invention

A kind of mountain landslide supervision device based on PNI magnetic sensor array of the utility model, this sniffer is adopted to carry out mountain landslide supervision, not only significantly can monitor the existence of landslide, than traditional deformation based sensor, there is convenient installation simultaneously.This device possesses good operability, reduces the probability by mistake surveyed.

The technical scheme that the utility model adopts is:

A kind of mountain landslide supervision device based on PNI magnetic sensor array, comprise sensor array, signal transacting and communication device, PC host computer, and being positioned at the permanent magnet of landslide layer, the process of sensor array connection signal and communication device, signal transacting is connected PC host computer with communication device.The duplicate PNI magnetic sensor module of cover more than described sensor array comprises, often each axle of cover PNI magnetic sensor module are completely orthogonal, position is fixed, and described sensor array is used for the acquisition of signal.Described signal transacting and communication device comprise multi-microprocessor module, each microprocessor module connects corresponding a set of PNI magnetic sensor module, the magnetic field data that signal transacting and communication device record for gathering described PNI magnetic sensor module, and be uploaded to PC host computer.Described PC host computer is used for magnetic field data and receives, processes, preserves, shows in real time.

Described microprocessor module reads corresponding PNI magnetic sensor module data respectively, under multi-computer communication agreement, data are passed to total processor module, after total processor module carries out data processing, by serial ports or wireless transport module, the magnetic field data recorded is uploaded to PC host computer.

Described microprocessor module is ARM single-chip microcomputer or FPGA microprocessor, and described total processor module is ARM single-chip microcomputer or FPGA microprocessor.

The Magnetic Sensor that described PNI magnetic sensor module connects three single shafts by driving IC chip is formed.

A kind of mountain landslide supervision device based on PNI magnetic sensor array of the utility model, technique effect is as follows:

1), utilize magnetic sensitive technology, permanent magnet is positioned.This monitoring device uses the just the same PNI magnetic sensor module of many covers, adopts difference processing to eliminate the impact such as terrestrial magnetic field and common mode interference.In order to improve the degree of accuracy of magnetic orientation, the position between many cover PNI magnetic sensor modules is relatively fixing.

2), simultaneously often three axles of cover PNI magnetic sensor module also must be completely orthogonal, forms an axially symmetric structure.Total processor module, under communication protocol, in order controls multi-microprocessor module acquires and receives the magnetic field data of Magnetic Sensor, passing to PC after processing accordingly by serial ports (or wireless communication module).The data processing utilizing PC powerful and graphics display capability are to process data, non-volatile recording data, to show image in real time.

3), this sniffer is highly sensitive, and operability is good, and error rate is low, and does not disturb by terrestrial magnetic field, and probe should not be damaged by high-intensity magnetic field, and instrument reliability is good, is easy to safeguard.

Accompanying drawing explanation

Fig. 1 is the utility model device connection diagram;

Fig. 2 is the monitoring principle schematic diagram of the utility model device;

Fig. 3 is the structured flowchart of the utility model device.

Embodiment

As shown in Figure 1, a kind of mountain landslide supervision device based on PNI magnetic sensor array, comprise sensor array 1, signal transacting and communication device 2, PC host computer 3, and be positioned at the permanent magnet 6 of landslide layer B, sensor array 1 connection signal process and communication device 2, signal transacting is connected PC host computer 3 with communication device 2.The duplicate PNI magnetic sensor module of cover more than described sensor array 1 comprises, often each axle of cover PNI magnetic sensor module are completely orthogonal, position is fixed, and described sensor array 1 is for the acquisition of signal;

Described signal transacting and communication device 2 comprise multi-microprocessor module 4, each microprocessor module 4 connects corresponding a set of PNI magnetic sensor module, the magnetic field data that signal transacting and communication device 2 record for gathering described PNI magnetic sensor module, and be uploaded to PC host computer 3.Described PC host computer 3 for magnetic field data receive, process, preserve, show in real time.

Described microprocessor module 4 reads corresponding PNI magnetic sensor module data respectively, under multi-computer communication agreement, data are passed to total processor module 5, after total processor module 5 carries out data processing, by serial ports or wireless transport module, the magnetic field data recorded is uploaded to PC host computer 3.Described microprocessor module 4 is ARM single-chip microcomputer or FPGA microprocessor.Described total processor module 5 is ARM single-chip microcomputer or FPGA microprocessor.

Principle analysis:

General, magnetic bodies to the distance of sensor be 3 times of the distance of magnetic bodies itself and above time then this magnetic bodies can regard magnetic dipole as.The Distribution of Magnetic Field of magnetic dipole can simply be expressed as

$H=\frac{{\mathrm{\μ}}_{0}m}{4{\mathrm{\πr}}^3}\sqrt{3{\mathrm{cos\θ}}^3+1}$

μ in formula ₀for magnetic field magnetic permeability in a vacuum, size is 4 π * 10 ^-7h/m, generally adopt this value to be approximately magnetic permeability in atmosphere, m is the magnetic moment of magnetic bodies, and r is the distance of check point to magnetic source barycenter, and H is the magnetic field intensity of magnetic dipole, and θ is the angle between r and magnetic dipole magnetic moment m.

More than 3 times of the diameter of permanent magnet 6 itself due to the distance between permanent magnet 6 and sniffer, therefore permanent magnet 6 can be regarded as a dipole model of magnetic, be simultaneously three dimensional space coordinate initial point with permanent magnet 6, the spatial magnetic field of permanent magnet 6 is different along with position difference, and the magnetic field size and Orientation that therefore in PNI magnetic sensor array, the identical magnetic sensor of each cover records is all different.Delivered on PC host computer 3 by serial ports (or wireless transport module) after total processor module 5 gathers magnetic field data.PC host computer 3 calculates the position of permanent magnet 6 from magnetic field size, shows the movement locus of permanent magnet 6 in real time simultaneously.

Sensor array 1 uses the SEN-R65 Magnetic Sensor of PNI company of the U.S., its maximum measurement range is ± 200 μ T, maximum sensitivity is 15nT, uses a special drive IC PNI 12927 and three Magnetic Sensor SEN-R65 namely to form a PNI magnetic sensor module.Nominal increase measure-point amount can improve precision and the antijamming capability of location, but also can increase system complexity simultaneously, the time of hardware spending and positions calculations, consider the range of movement selection of precision and cost and measured target as the arrangement mode of 9 measuring points of Fig. 1, in figure, black round dot represents the position of PNI magnetic sensor module, and 9 groups of PNI magnetic sensor modules are positioned in same plane.Position wherein between 9 groups of PNI magnetic sensor modules is relatively fixing.

Signal transacting and communication device 2 by: single-chip microcomputer 1., single-chip microcomputer 2., single-chip microcomputer 3. (microprocessor such as ARM or FPGA) read corresponding PNI magnetic sensor module data respectively, after under multi-computer communication agreement, data are passed to total single-chip microcomputer (microprocessor such as ARM or FPGA).By serial ports (or wireless transport module), the magnetic field data recorded is passed to PC host computer 3 after total single-chip microcomputer process.

Implementation step is as follows:

Permanent magnet 6 is fixed on landslide layer B, sensor array 1 is fixed on a stabilized zone separated by a distance with permanent magnet 6.Select permanent magnet 6 to be true origin, therefore accurately can calculate the position of each PNI magnetic sensor module of sensor array 1, permanent magnet 6 as dipole model of magnetic process, therefore can write out its Distribution of Magnetic Field accurately.After system electrification, sensor array 1 initialization.Single-chip microcomputer reads corresponding Magnetic Sensor magnetic field data, PC host computer 3 is passed to reliably by serial ports, magnetic field data is read based on the serial ports subfunction of Labview in PC host computer 3, each axle magnetic field size difference elimination between two terrestrial magnetic field interference of each Magnetic Sensor, magnetic field size data after process releases the position of permanent magnet 6 by inversion algorithm, and real-time shows.

Fig. 2 is the principle schematic of mountain landslide supervision device of the present utility model.A is the resistant strata of massif, and B is landslide layer, and permanent magnet 6 is placed on landslide layer, and when there is landslide, permanent magnet 6 slides into D from C, and E is 9 cover duplicate PNI magnetic sensor array.Wherein, 9 cover PNI Magnetic Sensors distance is between any two the same, and the maintenance of trying one's best is vertical, orthogonal.When landslide occurs massif, permanent magnet 6 slides into D from C, and PNI magnetic sensor array is respectively overlapped the magnetic field size that Magnetic Sensor records and will be changed, and magnetic sensor array changes this real-time gives single-chip microcomputer.

Fig. 3 is the circuit structure block diagram of mountain landslide supervision device of the present utility model.Wherein PNI1, PNI2...PNI9 represent the duplicate PNI Magnetic Sensor of nine covers respectively, often overlap the Magnetic Sensor that Magnetic Sensor connects three single shafts by a special driving chip and form.The precision of the Magnetic Sensor of each single shaft up to 15nT, simultaneously three single shafts also try one's best orthogonal, vertical, and driving chip forms a kind of axisymmetric relation.Each STC12LE2052AD single-chip microcomputer controls three cover PNI Magnetic Sensor image data by chip selection signal, receives the data that Magnetic Sensor collects by spi bus simultaneously.Link on the serial ports 1 of STC15L2K61S2 single-chip microcomputer by serial ports under multi-computer communication mechanism, STC15L2K61S2 single-chip microcomputer by RS485 bus remote, jumbo is sent to PC host computer 32 times the data received at serial ports.

Claims (5)

1. the mountain landslide supervision device based on PNI magnetic sensor array, comprise sensor array (1), signal transacting and communication device (2), PC host computer (3), and be positioned at the permanent magnet (6) of landslide layer (B), it is characterized in that

Sensor array (1) connection signal process and communication device (2), signal transacting is connected PC host computer (3) with communication device (2);

The duplicate PNI magnetic sensor module of cover more than described sensor array (1) comprises, often each axle of cover PNI magnetic sensor module are completely orthogonal, position is fixed, and described sensor array (1) is for the acquisition of signal;

Described signal transacting and communication device (2) comprise multi-microprocessor module (4), each microprocessor module (4) connects corresponding a set of PNI magnetic sensor module, the magnetic field data that signal transacting and communication device (2) record for gathering described PNI magnetic sensor module, and be uploaded to PC host computer (3);

Described PC host computer (3) for magnetic field data receive, process, preserve, show in real time.

2. a kind of mountain landslide supervision device based on PNI magnetic sensor array according to claim 1, is characterized in that,

Described microprocessor module (4) reads corresponding PNI magnetic sensor module data respectively, under multi-computer communication agreement, data are passed to total processor module (5), after total processor module (5) carries out data processing, by serial ports or wireless transport module, the magnetic field data recorded is uploaded to PC host computer (3).

3. a kind of mountain landslide supervision device based on PNI magnetic sensor array according to claim 2, is characterized in that,

Described microprocessor module (4) is ARM single-chip microcomputer or FPGA microprocessor.

4. a kind of mountain landslide supervision device based on PNI magnetic sensor array according to claim 2, is characterized in that,

Described total processor module (5) is ARM single-chip microcomputer or FPGA microprocessor.

5. a kind of mountain landslide supervision device based on PNI magnetic sensor array according to claim 1, is characterized in that,

The Magnetic Sensor that described PNI magnetic sensor module connects three single shafts by driving IC chip is formed.