CN109183569A - With vehicle compactness on-line detecting system - Google Patents
With vehicle compactness on-line detecting system Download PDFInfo
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- CN109183569A CN109183569A CN201811026534.6A CN201811026534A CN109183569A CN 109183569 A CN109183569 A CN 109183569A CN 201811026534 A CN201811026534 A CN 201811026534A CN 109183569 A CN109183569 A CN 109183569A
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- compactness
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- vibrated roller
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
- E01C19/22—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for consolidating or finishing laid-down unset materials
- E01C19/23—Rollers therefor; Such rollers usable also for compacting soil
- E01C19/28—Vibrated rollers or rollers subjected to impacts, e.g. hammering blows
- E01C19/288—Vibrated rollers or rollers subjected to impacts, e.g. hammering blows adapted for monitoring characteristics of the material being compacted, e.g. indicating resonant frequency, measuring degree of compaction, by measuring values, detectable on the roller; using detected values to control operation of the roller, e.g. automatic adjustment of vibration responsive to such measurements
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- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
This application discloses one kind with vehicle compactness on-line detecting system, comprising: compactness sensor, Vehicle Controller and the display being sequentially connected.Wherein, compactness sensor is used to detect travel speed signal, direction signal and the vibration acceleration signal of vibrated roller, Vehicle Controller is used to determine the position of vibrated roller and calculates compaction value, display is arranged in the driver's cabin of vibrated roller, for show vibrated roller position and corresponding compaction value.The system can also include the handheld terminal and remote terminal being connected with Vehicle Controller.The system can detect Asphalt Pavement Compaction Degree Index, and not needing destruction bituminous pavement can be achieved with, convenient for instructing operator to carry out repairing and being further compacted, simultaneously, radioactive substance is not used in the detector, therefore to the human body effect of being safe from harm, will not pollute the environment.
Description
Technical field
This application involves Data Detections and process field, more particularly to one kind with vehicle compactness on-line detecting system.
Background technique
Traditional Asphalt Pavement Compaction Degree Index assessment method can be roughly divided into destructive testing assessment method and non-destructive
Evaluation method.Destructive testing refers to before the compactness and water content of measurement soil layer or material layer, needs to tested
It measures layer and carries out a degree of destruction, to take sample.There are mainly two types of common destructive testings: sand replacement method and core cutter method.
Sand replacement method is the volume that displacement examination hole is gone to using the sand of single-size, it is current most general method.Core cutter method is that measurement is existing
The conventional method of field density.With the averag density that the density that core cutter method measures is in cutting ring where soil sample in depth bounds.It is not
The averag density of entire rolling layers can be represented.Although both methods test method is easy to implement, require to destroy pitch
It realizes on road surface.There are mainly two types of common nondestructive tests: Nucleon Method and drop weight method.Nucleon Method is surveyed using radioactive element
The bulk density and water content of amount soil or ground surface material.The characteristics of this quasi-instrument is that measuring speed is fast, needs personnel few, the disadvantage is that, it puts
Penetrating property substance is harmful to the human body, and additionally needs the instrument to burrow, is destroyed the structure near the wall of hole during burrowing, shadow
The accuracy for ringing measurement can make Construction control use for nucleon density hygronom method, but need compared with the conventional method, to test
Demonstrate,prove its reliability.But nondestructive test assessment method price is high, and use environment condition requires height, furthermore exceeded radioactive material
Matter is harmful to the human body, once problem, which occurs, also can cause environmental pollution.
Summary of the invention
Aiming to overcome that the above problem or at least being partially solved or extenuate for the application solves the above problems.
According to the one aspect of the application, one kind is provided with vehicle compactness on-line detecting system, comprising: be sequentially connected
Compactness sensor, Vehicle Controller and display, wherein the compactness sensor is used to detect the traveling of vibrated roller
Speed signal, direction signal and vibration acceleration signal, and by the travel speed signal, the direction signal and the vibration
Acceleration signal is sent to the Vehicle Controller；The Vehicle Controller is used to be based on the travel speed signal and the side
The position of the vibrated roller is determined to signal, and compaction value is calculated according to the vibration acceleration signal；With it is described
Display is arranged in the driver's cabin of the vibrated roller, for show the vibrated roller position and corresponding compacting
Angle value.
It uses this that can be detected with vehicle compactness on-line detecting system with road pavement compactness, does not need to destroy road surface just
It is able to achieve, can be achieved with the calculating of compaction value during vibrated roller traveling, it is easy to operate, improve calculating
With the efficiency of processing, and the corresponding relationship of compaction value Yu road surface coordinate can be obtained, convenient for instructing operator to repair
It mends and is further compacted.Meanwhile radioactive substance is not used in the system, therefore to the human body effect of being safe from harm, it will not be right
Environment pollutes.
Optionally, system further include: handheld terminal is wirelessly connected, for receiving the vibration with the Vehicle Controller
Simultaneously real-time display shows the pressure of selected road on the screen of the handheld terminal for the position of dynamic road roller and corresponding compaction value
The average data and historic compaction angle value data of solidity value.
The system of the application uses handheld terminal, facilitates administrative staff to the working condition of road roller, the compacting work on road surface
Skill carries out real-time oversight and control, without being used in engineering after individually detected, without successively in the case where great distance
It reaches test point to be tested, can be achieved with real-time detection during road roller working, to be conducive to improve work effect
Rate guarantees construction quality.
Optionally, the system also includes ZIGBEE modules, between the Vehicle Controller and the handheld terminal
Realize data communication.
Optionally, system further include: remote terminal is wirelessly connected, for receiving the vibration with the Vehicle Controller
The position of dynamic road roller and corresponding compaction value are simultaneously shown on the screen of the remote terminal, to the position of the vibrated roller
Set and handled with corresponding compaction value, by the average data of list and/or graphical display present road compaction value and
Historic compaction angle value data simultaneously export.
The system uses remote terminal, can be realized the remote operation to road roller, checks and control, user does not use and applies
Work scene can grasp state, working efficiency and the processing quality of road roller working in real time, help to carry out entire engineering whole
Body is comprehensively held and quality control.Road roller quantity is more, construction road remote location in the case where, advantage is particularly evident.
Optionally, the system also includes GPRS modules, for real between the Vehicle Controller and the remote terminal
Existing data communication.
Optionally, the compactness sensor includes: acceleration transducer, is arranged on the steel wheel of the vibrated roller
On, the vibration acceleration signal on steel wheel for detecting the vibrated roller；With velocity sensor for detecting institute
State the travel speed signal and the direction signal of vibrated roller.
Optionally, the acceleration transducer is piezoelectric acceleration sensor.
Optionally, the velocity sensor is hall sensor.
Optionally, the Vehicle Controller includes: signal conditioning circuit, is connect with the compactness sensor, for pair
The travel speed signal, the direction signal and the vibration acceleration signal are improved；Signal acquisition circuit, and it is described
Signal conditioning circuit connection, for carrying out mould to by the travel speed signal, direction signal and vibration acceleration signal of conditioning
Number conversion, and the travel speed signal and the direction signal are counted；And central processing unit, with the signal
Acquisition Circuit connection, for determining that the vibration is pressed according to the travel speed signal, the direction signal and the result of counting
The position of road machine calculates compaction value according to the vibration acceleration signal.
Optionally, the central processing unit is the industrial control computer mainboard of PC104 structure, for believing the travel speed
Number, the direction signal and the vibration acceleration signal be analyzed and processed and provide storage interface, communication interface and display
Operation interface.
According to the accompanying drawings to the detailed description of the specific embodiment of the application, those skilled in the art will be more
Above-mentioned and other purposes, the advantages and features of the application are illustrated.
Detailed description of the invention
Some specific embodiments of the application are described in detail by way of example and not limitation with reference to the accompanying drawings hereinafter.
Identical appended drawing reference denotes same or similar part or part in attached drawing.It should be appreciated by those skilled in the art that these
What attached drawing was not necessarily drawn to scale.In attached drawing:
Fig. 1 is the schematic block circuit diagram with vehicle compactness on-line detecting system according to the application one embodiment；
Fig. 2 is the schematic circuit diagram figure according to the acceleration signal conditioning circuit of the application one embodiment；
Fig. 3 is the constant current source power supply and high-pass filtering circuit schematic diagram according to the application one embodiment；
Fig. 4 is the forward gain circuit diagram according to the application one embodiment；
Fig. 5 is the low-pass filter circuit schematic diagram according to the application one embodiment；
Fig. 6 is the second level gain circuitry schematic diagram according to the application one embodiment；
Fig. 7 is the schematic circuit diagram figure according to the speed signal conditioning circuit of the application one embodiment；
Fig. 8 is the Vehicle Controller software modularity block diagram of the application one embodiment；
Fig. 9 is the display screen interface schematic diagram of the application one embodiment；
Figure 10 is the illustrative circuitry structure with vehicle compactness on-line detecting system according to another embodiment of the application
Figure；
Figure 11 is the schematic block circuit diagram of the remote terminal of the application one embodiment.
Specific embodiment
According to the accompanying drawings to the detailed description of the specific embodiment of the application, those skilled in the art will be more
Above-mentioned and other purposes, the advantages and features of the application are illustrated.
The embodiment of the application provides one kind with vehicle compactness on-line detecting system.Fig. 1 is according to the application one
The schematic block circuit diagram with vehicle compactness on-line detecting system of embodiment.The system may include: be sequentially connected it is closely knit
Spend sensor, Vehicle Controller and display.Compactness sensor, Vehicle Controller and display can form asphalt road face pressure
Solidity detector.
The compactness sensor is used to detect travel speed signal, direction signal and the vibration acceleration of vibrated roller
Signal, and the travel speed signal, the direction signal and the vibration acceleration signal are sent to the vehicle-mounted control
Device.
The Vehicle Controller is used to determine that road is pressed in the vibration based on the travel speed signal and the direction signal
The position of machine, and compaction value is calculated according to the vibration acceleration signal.
The display is arranged in the driver's cabin of the vibrated roller, for showing the position of the vibrated roller
With corresponding compaction value.
It uses this that can be detected with vehicle compactness on-line detecting system with road pavement compactness, does not need to destroy road surface just
It is able to achieve, can be achieved with the calculating of compaction value during vibrated roller traveling, it is easy to operate, improve calculating
With the efficiency of processing, and the corresponding relationship of compaction value Yu road surface coordinate can be obtained, convenient for instructing operator to repair
It mends and is further compacted.Meanwhile radioactive substance is not used in the system, therefore to the human body effect of being safe from harm, it will not be right
Environment pollutes.
Optionally, the compactness sensor may include acceleration transducer and velocity sensor.Optionally, described to add
Velocity sensor is piezoelectric acceleration sensor.The velocity sensor is hall sensor.
Acceleration transducer is arranged on the steel wheel of the vibrated roller, for detecting the vibrated roller
The vibration acceleration signal on steel wheel.
Acceleration transducer can use LC01 series acceleration transducer, which is built-in miniature IC integrated circuit
The piezoelectric acceleration sensor of amplifier, traditional piezoelectric acceleration sensor is integrated in one by it with charge amplifier, can be straight
It connects and is connect with recording and displaying instrument, simplify test macro, improve measuring accuracy and reliability.Its outstanding feature is as follows:
1) Low ESR exports, and anti-interference, noise is small；2) ratio of performance to price is high, easy for installation, is particularly suited for multimetering；3) stabilization can
It leans on, moisture resistant, anti-dust, anti-harmful gas.The acceleration transducer is using advanced isolation shearing and tri-shear in the world
Structure.Miniature IC amplifier key element is also U.S.'s imported with original packaging, basic composition is metal-oxide-semiconductor field effect transistor, and by signal tune
The high resistance measurement and capacitor for managing device input terminal constitute a single order high-pass filter, thereby determine that the low frequency in sensor measurement
Cutoff frequency.There are the output of built-in IC sensor signal two lines to couple feature, i.e., signal output line and supplies miniature IC amplifier work
The Constant current input line of effect is same root line, and another single line is ground wire, the low noise that signal output line can be good with shield effectiveness
Sound coaxial cable.Country's vibrated roller working frequency for using of construction site is most of generally 20 between 50Hz at present
Situation is that the acceleration amplitude in 30Hz or so, and when vibrating wheels work is all not above 15g, according to this standard and comprehensive sexual valence
Than the acceleration transducer that the design selects LC0154T model.
Velocity sensor is used to detect the travel speed signal and the direction signal of road roller.The application is using suddenly
Your formula sensor exports speed, the direction pulse signal of wheel: the fluted disc for posting two circle magnet steel is installed i.e. on wheel, whenever
When one pitch of fluted disc positive rotation, two sensors export positive alternately pulse signal, a fluted disc dextrorotation and circle, the arteries and veins of output
It is identical as magnet steel number to rush number, i.e. one wheel circumference of forward travel；Reverse driving.Pass through determining for PC/104 expansion board
When/counter counts the speed of wheel, direction pulse signal, the travel speed, inner of vibrated roller can be calculated
Journey and driving direction.
Travel speed:
Mileage:
Wherein, Δ t indicates the time of Timer/Counter timing；The count value (subtraction count) of k expression Timer/Counter；
The radius of R expression wheel；The magnet steel number of z expression Hall sensor.
Optionally, the Vehicle Controller may include:
Signal conditioning circuit is connect with the compactness sensor, for believing the travel speed signal, the direction
Number and the vibration acceleration signal improved；
Signal acquisition circuit is connect with the signal conditioning circuit, for the travel speed signal by conditioning, direction
Signal and vibration acceleration signal carry out analog-to-digital conversion, and count to the travel speed signal and the direction signal
Number；
Central processing unit is connect with the signal acquisition circuit, for according to the travel speed signal, the direction
Signal and the result of counting determine the position of the vibrated roller, calculate compaction value according to the vibration acceleration signal.
Optionally, the signal conditioning circuit is the expansion board of PC/104 structure.The signal conditioning module mainly includes adding
Speed signal conditioning circuit and speed signal conditioning circuit.
Fig. 2 is the schematic circuit diagram figure according to the acceleration signal conditioning circuit of the application one embodiment.Accelerate
Degree signal conditioning circuit may include the high-pass filter being sequentially connected, forward gain circuit, low-pass filter, two stage gains electricity
Road, wherein high-pass filter is connect with acceleration transducer, and second level gain circuitry is connect with signal acquisition circuit；Acceleration passes
Sensor sends vibration acceleration signal to high-pass filter for measuring vibration acceleration signal；High-pass filter is used for
By vibration acceleration signal blocking, the low-resistance voltage signal directly proportional to mechanical quantity is exported, and low-resistance voltage signal is sent to
Forward gain circuit；Forward gain circuit transmits amplified signal for amplifying processing to low-resistance voltage signal
To low-pass filter；After low-pass filter carries out low-pass filtering to signal, second level gain circuitry is sent a signal to；Two stage gains
Circuit sends the signal after correction to signal acquisition circuit for correcting the phase shift that forward gain circuit generates signal.
Fig. 3 is the constant current source power supply and high-pass filtering circuit schematic diagram according to the application one embodiment.Wherein, constant current
Source U6 is realized using LM317/LZ linear voltage regulator, for providing constant-current source to vibration acceleration signal.High-pass filter U7A benefit
It is realized with tetra- operational differential amplifier of LM324.Optionally, the high-pass filter is single order active high-pass filter.Voltage source
VCC is connect by diode D5 with the input terminal of constant-current source U6, and constant-current source U6 output end passes through resistance R52 and acceleration transducer
The first output port of P1 connects.The first output port of acceleration transducer P1 passes through capacitor C58's and high-pass filter U7A
Positive input terminal connection, the positive input terminal of high-pass filter U7A are grounded by resistance R58, and the negative input end of high-pass filter U7A connects
Output end is connect, output end is the output of high-pass filter.
The forward gain circuit passes amplified signal for amplifying processing to the low-resistance voltage signal
Give the low-pass filter.Forward gain is made of level-one reverse phase scale operation amplifying circuit and voltage order one follower.Electricity
Pressure follower has the characteristics that input impedance is high, output impedance is low, generally does buffer stage or isolation level.The output of voltage amplifier
Impedance is generally relatively high, and usually at several kilo-ohms to tens kilo-ohms, if the input impedance of rear class is smaller, signal is just had
Comparable partition losses are in the output resistance of prime.Applied voltage follower can make to be independent of each other between forward and backward grade circuit.
The forward gain circuit includes the first reverse phase scale operation amplifying circuit and first voltage follower, wherein institute
State the negative input end of the first reverse phase scale operation amplifying circuit respectively with the high-pass filter and the first voltage follower
Positive input terminal connection, positive input terminal ground connection, output terminates the positive input terminal of the voltage follower；The first voltage follows
The negative input end of device is connect with output end, and the output terminates the low-pass filter.
Fig. 4 is the forward gain circuit diagram according to the application one embodiment.Wherein, high-pass filter U7A's is defeated
Outlet connects the negative input end of the first reverse phase scale operation amplifying circuit U7B, the first reverse phase scale operation by resistance R55
The negative input end of amplifying circuit U7B passes through the positive input terminal of variable resistance R53 connection first voltage follower U7C, the first reverse phase
The positive input terminal of scale operation amplifying circuit U7B is grounded by variable resistance R51.First reverse phase scale operation amplifying circuit U7B
Output end connection first voltage follower U7C positive input terminal.The negative input of first voltage follower U7C terminates output end,
Output end is the output of forward gain circuit.Optionally, the first reverse phase scale operation amplifying circuit U7B and first voltage follower
U7C can be realized using LM324.
The output of forward gain circuit connects the low-pass filter, after low-pass filter carries out low-pass filtering to signal,
Send a signal to the second level gain circuitry.Optionally, the low-pass filter is quadravalence Butterworth LPF.
Need component number few since voltage controlled voltage source type filter circuit has, potentiometer adjustment filter can be used in postiive gain
The advantages that gain of wave device, output impedance is low, and characteristic is easily adjusted, the design design voltage controlled voltage source type using cascade method
Butterworth LPF.At present country's vibrated roller working frequency for using of construction site generally 20 to 50Hz it
Between, the design is according to the cut-off frequecy of passband that live actual vibration road roller acceleration signal feature drafts low-pass filter
200Hz, passband maximum attenuation -1dB, stopband cutoff frequency 430Hz, minimum attenuation in stop band -20dB.According to these parameters
Calculate order N and the 3dB cutoff frequency of Butterworth LPF.The application uses two second order Butterworth low pass
Wave device constitutes quadravalence Butterworth LPF.
Fig. 5 is the low-pass filter circuit schematic diagram according to the application one embodiment.Wherein, forward gain circuit is defeated
Outlet connect the positive input terminal of difference amplifier U7D with variable resistance R56 by variable resistance R54, variable resistance R54 and can be changed
By the output end of capacitor C57 connection difference amplifier U7D between resistance R56, variable resistance R56 and difference amplifier U7D's
It is grounded between positive input terminal by capacitor C60, the negative input end of difference amplifier U7D is grounded by resistance R64, difference amplifier
Pass through the output end of variable resistance R62 connection difference amplifier U7D between the negative input end and resistance R64 of U7D.Difference amplifier
The output end of U7D connects the positive input terminal of difference amplifier U8A, variable resistance by variable resistance R57 with variable resistance R59
Pass through the output end of capacitor C59 connection difference amplifier U8A between R57 and variable resistance R59, variable resistance R59 and difference are put
It is grounded between the positive input terminal of big device U8A by capacitor C61.The negative input end of difference amplifier U8A is grounded by resistance R67.
Pass through the output of variable resistance R65 connection difference amplifier U8A between the negative input end and resistance R67 of difference amplifier U8A
End, the output end are the output of low-pass filter.The input of the output connection second level gain circuitry of low-pass filter.
The second level gain circuitry is used to correct the phase shift that the forward gain circuit generates signal, and will be after correction
Signal sends the signal acquisition circuit to.Optionally, the second level gain circuitry includes sequentially connected second reverse phase ratio
Operational amplification circuit, second voltage follower and tertiary voltage follower, wherein the second reverse phase scale operation amplifying circuit
Positive input terminate the low-pass filter, negative input end is connect with output end；The positive input terminal of the second voltage follower
Ground connection, negative input terminate the output end of the second reverse phase scale operation amplifying circuit；The tertiary voltage follower it is just defeated
Enter the output end for terminating the second voltage follower, negative input terminates output end, and output terminates the signal acquisition circuit
Input terminal.Entire conditioning circuit overall gain is 1, two stage gains its mainly for reverse phase scale operation amplification in correction forward gain
Circuit generates the phase shift of 180 degree to signal.
Fig. 6 is the second level gain circuitry schematic diagram according to the application one embodiment.Wherein, the output of low-pass filter connects
The positive input terminal of the reverse phase scale operation amplifying circuit U8C of second level gain circuitry is connect, reverse phase scale operation amplifying circuit U8C's is negative
Input termination output end, output end pass through the negative input end of resistance R61 connection voltage follower U8B, and voltage follower U8B's is negative
Input terminal is grounded by resistance R63 connection output end, the positive input terminal of voltage follower U8B by resistance R60, voltage follower
The positive input terminal of the output end connection voltage follower U8D of U8B.The negative input of voltage follower U8D terminates output end, output end
Connect the input terminal of signal acquisition circuit.Optionally, signal acquisition circuit is PC/104 collection plate.
After the signal of acceleration transducer is handled by the acceleration signal conditioning circuit of the application, conditioning is improved
Precision, can detect in time acceleration transducer work it is whether stable so that the input signal quality of signal acquisition circuit improves, just
It is handled in subsequent analysis.Small in size compared with existing acceleration transducer signals conditioner, route relationship is simple, cost
It is low, it is matched convenient for failure diagnostic apparatus.
Since field compaction operation interference is very strong.The application selects 6N137 optical coupling isolator as speed signal tune
Circuit is managed, so that transmission line isolation and complete " floating " are got up, further increases the reliability of speed signal transmission.It is so-called
" floating " refers to the common ground removed between transmission line both ends, not altogether due to transmission line both ends, has also just blocked ground loop,
To eliminate earth potential difference bring common mode interference.
Fig. 7 is the schematic circuit diagram figure according to the speed signal conditioning circuit of the application one embodiment.Speed passes
Sensor P5 transmits a signal to optical coupling isolator U9, then passes through amplifier U11A, outputs a signal to signal acquisition circuit.Speed
Degree sensor P6 transmits a signal to optical coupling isolator U10, then passes through amplifier U11B, outputs a signal to signal acquisition electricity
Road.
Optionally, signal acquisition circuit is the expansion board of PC/104 structure, is mainly responsible for acceleration, speed/direction letter
Number acquisition.The application uses signal acquisition module of the ART2932 as hardware system.ART2932 is a based on PC/104
The intelligent high-speed simulation of bus, digital quantity input-output card, fully comply with PC/104 bus specification.The module is mainly by AD mould
Analog quantity input, the input of DA analog output, DI digital quantity, DO digital output and five partial circuit of timer counter composition.
The central processing unit is the industrial control computer mainboard of PC/104 structure, for the travel speed signal, described
Direction signal and the vibration acceleration signal are analyzed and processed and provide storage interface, communication interface and display operation and connect
Mouthful.The application can use CPU module of the EPC-8000 as system.EPC-8000 is based on PXA270 processor (XScale
Framework) PC/104 built-in industrial control machine mainboard, product architecture design meets PC/104 specification V2.5.The mainboard has resource rich
Rich, the features such as interface is complete, low-power consumption, high reliablity, it is embedded that legal Microsoft Windows CE 5.0 can be installed
Operating system, and all onboard device Drivers libraries are provided.Optionally, the central processing unit is also connect with USB flash disk, is convenient for
Carry out outputting and inputting for data.
The principle for calculating compaction value using acceleration transducer is as follows.If indicating soil packing angle value with E, E with
The vibration parameters and running parameter of vibrated roller have following functional relation:
Wherein, PLIndicate the linear load of vibrated roller vibrating wheels, unit: N/cm；A indicates vibrated roller work vibration
Width, unit: mm；ω indicates vibrated roller working frequency, unit: rad/s；V indicates the operating rate of vibrated roller, single
Position: m/s.
In order to make the mathematical model of vibrated roller match as far as possible with actual condition, mathematical model should strive for simplification,
Keep mathematic calculation simple and easy.Before analyzing mathematical model, assumed in relation to parameter and condition in model:
1) assume to be compacted the elastomer that soil has certain rigidity, rigidity k2, damp as c2, it is linear damping；
2) rack of vibrated roller, the quality of vibrating wheels are reduced to the lumped mass block with certain mass, and rack is
m1, vibrating wheels m2；
3) vibrated roller work it is any in a flash, vibrating wheels are all kept and the close contact on ground.
Because of acceleration a2=ω2x2, compactness can be fitted out according to measured data to k2And c2Variation tendency.First
It is given to remove k2The value of outer other parameters, and give k2A series of ascending values can be obtained by acceleration amplitude with k in this way2Increase
Variation tendency.Acceleration amplitude can be calculated with c with same method2Variation tendency.During actually compacting, with
The progress of compacting, the rigidity of soil increase, deattenuation.With the increase of soil stiffness, compact wheel acceleration amplitude increases,
With the reduction of soil damping, vibrating wheels acceleration amplitude increases, that is to say, that with the progress of compacting operation, vibrating wheels accelerate
Degree amplitude is increasing.
By the mathematical model for analyzing vibrated roller, it is known that vibrated roller vibrating wheels are to ground directed force FsSize
It is not only related with the vibration parameters of vibrated roller itself, and with the rigidity k that is compacted soil2With damping c2It is related, FsIt can
It indicates are as follows:
As can be seen from the above formula that vibrated roller is to ground directed force FsIt is the amount of elastic deformation k of soil2x2And dampingVector sum.So vibrated roller has close relationship to the amount of force on ground and the physical characteristic of soil.Together
A kind of soil is under identical water content, and when being rolled using same model vibrated roller and debulking methods, the rigidity of soil is by small
To being gradually increased greatly, soil layer becomes larger the counter-force of vibrating wheels, and the sine wave of vibration acceleration signal gradually distorts, and counter-force is got over
Greatly.Soil stiffness is bigger, and acceleration becomes more serious.
By vibrated roller to ground directed force FsDynamic stiffness R can be found out.Dynamic stiffness R refers in certain frequency
The lower ability for bearing resistance to deformation.The ability of resistance to deformation is known as dynamic stiffness under dynamic loading, that is, causes required for unit amplitude
Dynamic force.Using the dynamic stiffness of plural form, plural dynamic stiffness is equal to the displacement (frequency of plural power (function of frequency) and plural number
Function) ratio.Real part, that is, Static stiffness (dynamic stiffness when frequency is 0) of the plural number dynamic stiffness, imaginary part embody damping effect
It answers.Imaginary part is known as loss angle divided by the arc tangent of the quotient of real part.
The dynamic rate R and dynamic deformation module E of soilvdThere is direct relationship.Dynamic deformation modulus EvdRefer to that the soil body exists
A certain size vertical impact force FsWith attack time tsAct on the parameter of lower resistance capacity to deformation.It is by plate pressure formula meter
It obtains:
Evd=1.5 × r × σ/s
Wherein, EvdIndicate dynamic deformation module (MN/m2)；R indicates the radius (mm) of standard circular rigid load plate,
150mm；σ indicates the maximum impact dynamic stress under Loading Plate, it is by rigid foundation, by maximum impact；Fs=
7.07KN and attack time tsIt is obtained by calibrating when=18ms, i.e. σ=0.1MPa；S indicates measured load plate sinking amplitude, i.e. lotus
The depression value (mm) of support plate；1.5 indicate that load plate shape influences coefficient.
EvdThe compactingproperties for being compacted material are reflected, have good correlation with compactness.At 4d detection method
E after reasonvdWith the logistic regression models of compactness: y=51.787lnEvd-105.64.Wherein: y is compactness (%)；EvdFor
Dynamic deformation modulus (MPa)；Related coefficient 0.968.
It facts have proved and use EvdControlling compaction quality has feasibility.As compacting counting increases, EvdIt is ascending gradually
Increase.Furthermore it can show that rigidity is also increasing by the proportional relation of rigidity and modulus.The application is in fixed test using dynamic
Rigidity value (R value) measures the compaction for being compacted material.E is calculated by R valuevd, and EvdThere is direct pass with compactness again
System, i.e., only needing to obtain R value can be obtained by the relative value E of compactnessvd, can be obtained by compaction value by calibration.
Fig. 8 is the Vehicle Controller software modularity block diagram of the application one embodiment.In the figure, central processing unit
Middle operation main program, main program call signal capturing card driver and compacting algorithm in a manner of DLL.Wherein, data acquisition card drives
The api function of ARTT2932 is called to call ADC sampling driving and timing/counting driving by PC104 bottom layer driving packet.Compacting is calculated
Method is by the frequency-domain analysis such as time-domain analyses and FFT and digital filtering such as digital integration and least square method fitting to compaction value
It is calculated.Man-machine interface and communication software are also controlled by main program.
Optionally, the display is to touch LCD display.7 cun of TFT touch screen displays can be selected, are mainly responsible for
To the real-time display of compacting result and road roller operating status, and operation panel is provided for roller man.The touch screen display
Show that there is device fine definition, wide viewing angle, widescreen shows, support 1024 × 768 resolution ratio, standard VGA interface, support USB or
The touching device of the port RS232 driving, the power supply of direct current 12V or 12V automobile power source.Cooperation powerful electromagnetic chuck can be fixed on driver's cabin
Side window on.The display is also used to the operation panel of the driver of the vibrated roller.
Fig. 9 is the display screen interface schematic diagram of the application one embodiment, and driver can lead to as can be seen from the figure
It crosses touch screen and the operation such as is uploaded, is arranged, closed, number of segment and road number to road select, so as to see the section
The real-time waveform figure of compactness, frequency, increment and pass and compactness under the road Shuo He said conditions and average waveform diagram.?
Before road roller starting of oscillation, click START button, vehicle compaction meter detect automatically road roller whether be in starting of oscillation state or
Person's failure of oscillation state；After completing a starting of oscillation and the operating process of failure of oscillation, it is equivalent to road roller pressing and goes over road surface, entrance is next
A starting of oscillation and failure of oscillation operating process, " pass " pane data add 1 automatically；It completes together or after one section of compacting, and in failure of oscillation shape
" upper track ", " lower road " or " upper section ", " lower section " button under state, are pressed, Taoist monastic name, segment number are switched；If road roller working parameter makes tune
It is whole, detector can be configured by " set " button.
The embodiment of the application also discloses one kind with vehicle compactness on-line detecting system.The system may include
The above-mentioned compactness sensor, Vehicle Controller and the display that are sequentially connected, further includes handheld terminal.The handheld terminal and institute
Vehicle Controller wireless connection is stated, simultaneously real-time display exists the position and corresponding compaction value for receiving the vibrated roller
On the screen of the handheld terminal, the average data and historic compaction angle value data of the compaction value of selected road are shown.Hand-held
In the state that terminal is connect with Vehicle Controller, acquisition and the data calculated can be for transmission in handheld terminals, and user can also be with
The setting of parameter is carried out to detector by handheld terminal.
The handheld terminal can be any one can pass through keyboard, mouse, touch screen, voice-operated device or hand-written with user
The modes such as equipment carry out the electronic product of human-computer interaction, such as mobile phone, smart phone, PDA, wearable device, palm PC PPC
Or tablet computer etc..
Optionally, the system also includes ZIGBEE modules, between the Vehicle Controller and the handheld terminal
Realize data communication.ZIGBEE is the synonym of IEEE 802.15.4 agreement.Its main feature is that short distance, low complex degree, from group
It knits, low-power consumption, low data rate, low cost.It is mainly suitable for that various set can be embedded in for automatic control and remote control field
It is standby.
The system of the application uses handheld terminal, facilitates administrative staff to the working condition of road roller, the compacting work on road surface
Skill carries out real-time oversight and control, without being used in engineering after individually detected, without successively in the case where great distance
It reaches test point to be tested, can be achieved with real-time detection during road roller working, to be conducive to improve work effect
Rate guarantees construction quality.
The embodiment of the application also discloses one kind with vehicle compactness on-line detecting system.The system includes above-mentioned
The compactness sensor, Vehicle Controller and the display that are sequentially connected, further include remote terminal.The remote terminal and the vehicle
Set controller is wirelessly connected, for receiving the position of the vibrated roller and corresponding compaction value and being shown in the long-range end
On the screen at end, position and corresponding compaction value to the vibrated roller are handled, aobvious by list and/or figure
Show the average data of present road compaction value and historic compaction angle value data and exports.
The system uses remote terminal, can be realized the remote operation to road roller, checks and control, user does not use and applies
Work scene can grasp state, working efficiency and the processing quality of road roller working in real time, help to carry out entire engineering whole
Body is comprehensively held and quality control.Road roller quantity is more, construction road remote location in the case where, advantage is particularly evident.
The wireless connection includes but is not limited to by internet, wide area network, Metropolitan Area Network (MAN), local area network, VPN network, wireless
The modes such as self-organizing network (Ad Hoc network) connect.The mode of output includes being exported by printing device, passes through readable storage
Medium exports or by software or application program (APP) output to other devices or software etc..
Figure 10 is the illustrative circuitry structure with vehicle compactness on-line detecting system according to another embodiment of the application
Figure.Optionally, which can also include above-mentioned remote terminal and handheld terminal simultaneously.
Optionally, the system also includes GPRS modules, for real between the Vehicle Controller and the remote terminal
Existing data communication.
ZIGBEE communication module and GPRS module used by the application and Vehicle Controller interface are RS232 serial interface
Mouthful.ZIGBEE communication module and GPRS module can be configured and upgraded by remote terminal serial ports.
Figure 11 is the schematic block circuit diagram of the remote terminal of the application one embodiment.Remote terminal 10 may include one
A or multiple processors (use 102a, 102b ... ..., 102n is shown, and processor can include but is not limited to micro process in figure
The processing unit of device MCU or programmable logic device FPGA etc.), memory 104 for storing data and for communicating function
The transmission module of energy.It in addition to this, can also include: display, input/output interface (I/O interface), universal serial bus
(USB) port (a port that can be used as in the port of I/O interface is included), network interface, power supply.The common skill in this field
Art personnel are appreciated that structure shown in the figure is only to illustrate, and do not cause to limit to the structure of above-mentioned electronic device.Example
Such as, remote terminal 10 may also include than more perhaps less component shown in this Fig or match with different from shown in Fig. 1
It sets.
It is to be noted that said one or multiple processors and/or other data processing circuits usually may be used herein
To be referred to as " data processing circuit ".The data processing circuit all or part of can be presented as software, hardware, firmware or its
His any combination.In addition, data processing circuit for single independent processing module or all or part of can be integrated to long-range end
In any one in other elements in end 10.As involved in the embodiment of the present application, the data processing circuit conduct
A kind of processor control (such as the selection for the variable resistance end path being connect with interface).
Memory 104 can be used for storing the software program and module of application software, as soft in commanded in the embodiment of the present application
Corresponding program instruction/the data storage device of part, the software program and mould that processor is stored in memory 104 by operation
Block realizes the method for above-mentioned application program thereby executing various function application and data processing.Memory 104 can wrap
Include high speed random access memory, may also include nonvolatile memory, as one or more magnetic storage device, flash memory or
Other non-volatile solid state memories.In some instances, memory 104 can further comprise remotely located relative to processor
Memory, these remote memories can pass through network connection to computer installation 10.The example of above-mentioned network includes but not
It is limited to internet, intranet, local area network, mobile radio communication and combinations thereof.
Transmitting device is used to that data to be received or sent via a network.Above-mentioned network specific example may include calculating
The wireless network that the communication providers of machine device 10 provide.In an example, transmitting device includes a network adapter
(Network Interface Controller, NIC), can be connected by base station with other network equipments so as to interconnection
Net is communicated.In an example, transmitting device can be radio frequency (Radio Frequency, RF) module, be used to pass through
Wireless mode is communicated with internet.
Display can such as touch-screen type liquid crystal display (LCD), the liquid crystal display aloow user with
The user interface of computer installation 10 (or mobile device) interacts.
In the above-described embodiments, can come wholly or partly by software, hardware, firmware or any combination thereof real
It is existing.When implemented in software, it can entirely or partly realize in the form of a computer program product.The computer program
Product includes one or more computer instructions.When computer loads and executes the computer program instructions, whole or portion
Ground is divided to generate according to process or function described in the embodiment of the present application.The computer can be general purpose computer, dedicated computing
Machine, computer network obtain other programmable devices.The computer instruction can store in computer readable storage medium
In, or from a computer readable storage medium to the transmission of another computer readable storage medium, for example, the computer
Instruction can pass through wired (such as coaxial cable, optical fiber, number from a web-site, computer, server or data center
User's line (DSL)) or wireless (such as infrared, wireless, microwave etc.) mode to another web-site, computer, server or
Data center is transmitted.The computer readable storage medium can be any usable medium that computer can access or
It is comprising data storage devices such as one or more usable mediums integrated server, data centers.The usable medium can be with
It is magnetic medium, (for example, floppy disk, hard disk, tape), optical medium (for example, DVD) or semiconductor medium (such as solid state hard disk
Solid State Disk (SSD)) etc..
Professional should further appreciate that, described in conjunction with the examples disclosed in the embodiments of the present disclosure
Unit and algorithm steps, can be realized with electronic hardware, computer software, or a combination of the two, hard in order to clearly demonstrate
The interchangeability of part and software generally describes each exemplary composition and step according to function in the above description.
These functions are implemented in hardware or software actually, the specific application and design constraint depending on technical solution.
Professional technician can use different methods to achieve the described function each specific application, but this realization
It is not considered that exceeding scope of the present application.
Those of ordinary skill in the art will appreciate that implement the method for the above embodiments be can be with
By program come instruction processing unit completion, the program be can store in computer readable storage medium, and the storage is situated between
Matter is non-transitory (English: non-transitory) medium, such as random access memory, read-only memory, flash
Device, hard disk, solid state hard disk, tape (English: magnetic tape), floppy disk (English: floppy disk), CD (English:
Optical disc) and any combination thereof.
The preferable specific embodiment of the above, only the application, but the protection scope of the application is not limited thereto,
Within the technical scope of the present application, any changes or substitutions that can be easily thought of by anyone skilled in the art,
Should all it cover within the scope of protection of this application.Therefore, the protection scope of the application should be with scope of protection of the claims
Subject to.
Claims (10)
1. one kind is with vehicle compactness on-line detecting system characterized by comprising the compactness sensor that is sequentially connected, vehicle-mounted
Controller and display, wherein
The compactness sensor is used to detect travel speed signal, direction signal and the vibration acceleration letter of vibrated roller
Number, and the travel speed signal, the direction signal and the vibration acceleration signal are sent to the Vehicle Controller；
The Vehicle Controller is used to determine the vibrated roller based on the travel speed signal and the direction signal
Position, and compaction value is calculated according to the vibration acceleration signal；With
The display is arranged in the driver's cabin of the vibrated roller, for showing the position of the vibrated roller and right
The compaction value answered.
2. according to claim 1 with vehicle compactness on-line detecting system, which is characterized in that the system further include:
Handheld terminal, with the Vehicle Controller be wirelessly connected, for receive the vibrated roller position and corresponding pressure
Simultaneously real-time display shows the average data and history pressure of the compaction value of selected road on the screen of the handheld terminal to solidity value
Solidity Value Data.
3. according to claim 2 with vehicle compactness on-line detecting system, which is characterized in that the system also includes
ZIGBEE module, for realizing data communication between the Vehicle Controller and the handheld terminal.
4. according to claim 1 with vehicle compactness on-line detecting system, which is characterized in that the system further include:
Remote terminal, with the Vehicle Controller be wirelessly connected, for receive the vibrated roller position and corresponding pressure
Solidity value is simultaneously shown on the screen of the remote terminal, at the position and corresponding compaction value to the vibrated roller
Reason passes through the average data and historic compaction angle value data of list and/or graphical display present road compaction value and exports.
5. according to claim 4 with vehicle compactness on-line detecting system, which is characterized in that the system also includes GPRS
Module, for realizing data communication between the Vehicle Controller and the remote terminal.
6. according to claim 1 with vehicle compactness on-line detecting system, which is characterized in that the compactness sensor packet
It includes:
Acceleration transducer is arranged on the steel wheel of the vibrated roller, for detecting the steel wheel of the vibrated roller
On the vibration acceleration signal；With
Velocity sensor is used to detect the travel speed signal and the direction signal of the vibrated roller.
7. according to claim 6 with vehicle compactness on-line detecting system, which is characterized in that the acceleration transducer is
Piezoelectric acceleration sensor.
8. according to claim 6 with vehicle compactness on-line detecting system, which is characterized in that the velocity sensor is suddenly
That formula sensor.
9. according to claim 1 to 8 it is described in any item with vehicle compactness on-line detecting system, which is characterized in that the vehicle
Set controller includes:
Signal conditioning circuit is connect with the compactness sensor, for the travel speed signal, the direction signal and
The vibration acceleration signal is improved；
Signal acquisition circuit is connect with the signal conditioning circuit, for travel speed signal, the direction signal by conditioning
Analog-to-digital conversion is carried out with vibration acceleration signal, and the travel speed signal and the direction signal are counted；With
Central processing unit is connect with the signal acquisition circuit, for according to the travel speed signal, the direction signal
The position that the vibrated roller is determined with the result of counting calculates compaction value according to the vibration acceleration signal.
10. according to claim 9 with vehicle compactness on-line detecting system, which is characterized in that the central processing unit
For the industrial control computer mainboard of PC104 structure, it is used to believe the travel speed signal, the direction signal and the vibration acceleration
Number it is analyzed and processed and provides storage interface, communication interface and display operation interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811026534.6A CN109183569A (en) | 2018-09-04 | 2018-09-04 | With vehicle compactness on-line detecting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811026534.6A CN109183569A (en) | 2018-09-04 | 2018-09-04 | With vehicle compactness on-line detecting system |
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| Publication Number | Publication Date |
|---|---|
| CN109183569A true CN109183569A (en) | 2019-01-11 |
Family
ID=64914284
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811026534.6A Pending CN109183569A (en) | 2018-09-04 | 2018-09-04 | With vehicle compactness on-line detecting system |
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| CN111236011A (en) * | 2020-01-23 | 2020-06-05 | 同济大学 | Road surface compaction quality monitoring system based on intelligent aggregate |
| CN112327684A (en) * | 2020-10-24 | 2021-02-05 | 中铁十六局集团路桥工程有限公司 | Asphalt mixing construction control system and method based on Internet of things |
| CN113250042A (en) * | 2021-05-06 | 2021-08-13 | 黑龙江工程学院 | Detection method for rolling quality of high-speed railway roadbed |
| CN114034236A (en) * | 2021-10-14 | 2022-02-11 | 东南大学 | High-precision modulus type intelligent compaction measurement index measurement and calculation method |
| CN114673051A (en) * | 2022-03-17 | 2022-06-28 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Roadbed compaction quality continuous detection system and method suitable for compaction and application |
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| CN114673051B (en) * | 2022-03-17 | 2023-11-17 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Roadbed compaction quality continuous detection system, roadbed compaction quality continuous detection method and roadbed compaction quality continuous detection application |
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Application publication date: 20190111 |