CN104634224B - Highway pavement paving thickness plug-in automatic measuring device - Google Patents
Highway pavement paving thickness plug-in automatic measuring device Download PDFInfo
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- CN104634224B CN104634224B CN201410810865.4A CN201410810865A CN104634224B CN 104634224 B CN104634224 B CN 104634224B CN 201410810865 A CN201410810865 A CN 201410810865A CN 104634224 B CN104634224 B CN 104634224B
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Abstract
The invention belongs to the field of road construction quality control, and provides a device capable of realizing the automatic high-precision and real-time measurement on the highway pavement paving thickness. The real-time measurement of the pavement paving thickness can be realized, and measurement information can also be sent to a database in a remote way for subsequent quality assessment application and is used as the basis for relevant departments to realize paving quality management. Therefore, the invention has the technical scheme that a highway pavement paving thickness plug-in automatic measuring device comprises a measurement platform trolley, a paving thickness measuring module, GPS real-time positioning module, an integrated controller module, a DTU (date transfer unit), a database and a server module. The automatic measuring device is mainly applied to road construction quality control.
Description
Technical field
The invention belongs to quality of road construction control field, more particularly, in a kind of high grade highway pavement paving process
The self-operated measuring unit of road surface structare layer paving thickness.
Technical background
In high grade highway pavement work progress, it is the durability for improving highway to efficiently control pavement spread thickness
Can, it is ensured that the key of quality of road construction.In pavement construction, frequently with drawing steel wire collimation method, equalizer bar and sensor phase are set up
With reference to method[1-4]Paving thickness is controlled.For drawing steel wire collimation method, because the control point of fixed wire has certain
Distance interval, often causes that the paving thickness between control point is difficult precise control.For setting up equalizer bar method, then need to assume beam
Front and back end (reflection pave front and back end) point position at structure sheaf bottom (pave basal plane) elevation it is consistent, so can just use beam
The difference of the distance that the sensor of front and back end is measured is surveyed as the current position paving thickness that paves in practice of construction central sill front and back end
Elevation at point might not be identical, thus can bring paving thickness calculation error.
The lossless detection methods such as GPR, ultrasonic wave[5-7]Also it has been widely applied to roll the detection of rear road surface thickness.
These methods can automatically and continuously detect the pavement spread thickness after compacting, but be filled due to not installing the positioning of absolute position
Put, the Cumulative Distance advanced since initial measuring point simply by measuring and testing device is surveyed as the paving thickness surveyed with starting
The relative distance of point.So, the absolute location coordinates corresponding to surveyed paving thickness cannot on the one hand be obtained；On the other hand, exist
Detection means must be kept unidirectionally to move forward in detection process, accumulation row of the numerical value for otherwise being measured since initial measuring point
Entering distance can not reflect the true relative distance of the detection means and initial measuring point, so as to cause these methods can not intuitively,
Corresponding road surface absolute position when indicating survey paving thickness unqualified exactly.Further, since car used by this kind of detection means
Vehicle body is overweight or wheel tyre is not specially treated, it is easy to sunk or soft on the hard pitch concrete road surface for just having paved
Change, it is impossible to be applicable the asphalt concrete pavement that detection just paves, the road surface for causing these methods to be applicable after being compacted cooling
The detection of paving thickness, therefore be difficult to realize the timely control of paving thickness in road pavement paving process and adjustment.
According to《Road Engineering Quality Checking And Evaluation standard》(JTGF80/1-2004) regulation, traditional pavement spread is thick
Degree manual detection is generally using with machine transplanting of rice chi method[8-10], but therefore kind method detection frequency is relatively low, and it is representative poor, it is impossible to objective
The paving thickness on the whole construction road surface of reflection, and the method is affected by human factors larger, and testing result may contain larger
Error.Interference from human factor, high accuracy, automatic, real-time highway pavement can be overcome to pave therefore, it is necessary to develop one kind
Measurer for thickness ensures high grade highway pavement spreading quality.
Bibliography：
[1] Ha Musiwoke paving thicknesses detecting system and the balance beam system [P] with the system, patent of invention
ZL201310114784.X, 2013
[2] Zhang Guanghai, the analysis of what gram loyalty auto leveling system of paver height sensors with compare [J] road building machines
With mechanization of building operation, 1999 (6):12-13
[3] development [D] the Heilungkiang of skin Yadong auto leveling system of paver：Harbin Institute of Technology, 2007
[4] laser controller [P] China of Zhang Jinchun sub-base graders adjustment elevation, utility model patent,
ZL00237000.X, 2000
[5] on utilization [J] of the flat Ground Penetrating Radars detecting systems of Zou Jin in bituminous pavement paving Thickness sensitivity with control
Extra large highway, 2002 (2):9-10
[6]Dwayne Arthur Harris.Pavement Thickness Evaluation Using Ground
Penetrating Radar [D] .Purdue University, 2006
[7] Yuan Yiyong, woods is tieed up positive concrete roads face thickness ultrasound measuring instrument and develops and apply [J] Non-Destructive Testings, 1995
(7)：181-183
[8] People's Republic of China's professional standard Road Engineering Quality Checking And Evaluation standards, JTG F80/1-2004 [S]
Beijing:People's Transportation Press, 2004
[9] People's Republic of China's professional standard highway technologies status assessment standard, JTG H20-2007 [S] Beijing:
People's Transportation Press, 2007
[10] Tang Song, mutually big asphalt pavings thickness measurement chi [P] China of Tang, utility model patent,
201220017841.X, 2012.
The content of the invention
To overcome the deficiencies in the prior art, there is provided be capable of achieving what highway pavement paving thickness was measured automatically, in high precision, in real time
Device, can both realize the real-time measurement of pavement spread thickness, can remotely send metrical information to database again and be available for follow-up matter
Amount assessment application, the foundation of spreading quality management is carried out as relevant departments.Therefore, the present invention is adopted the technical scheme that, it is public
The plug-in type self-operated measuring unit of road pavement spread thickness, including：Measuring table dolly, paving thickness measurement module, GPS are real-time
Locating module, integrated manipulator module, data wireless sending module (DTU), database and application server module；
Measuring table dolly includes paving thickness measurement module, GPS by steel wheel, high-strength aluminum alloy vehicle frame, for installation
The left and right of real-time locating module, integrated manipulator module and data wireless sending module is to crossbeam and connection retractor device group
Into it is connected with paver using retractor device is connected, and is synchronously moved forward with paver；Connection retractor device is using rigidity
The mode that set beam is combined with stone dead wire, wherein, rigid enclosure beam is used for control platform dolly direct of travel, prevents dolly from offseting；It is soft
Steel wire draws motor to rotate come folding and unfolding by stretching, and stone dead wire is released in paving thickness measurement process, the elongation of rigid enclosure beam, to ensure
Measuring table dolly is as you were；After being measured, the drawing motor of stretching in connection retractor device reclaims stone dead wire, pulls measurement
Platform dolly, rigid enclosure beam elongation position is restored, and platform dolly keeps up with paver movement；
Paving thickness measurement module includes electric pushrod, displacement transducer, pressure sensor and probe；Electric pushrod is installed
On the crossbeam of measuring table dolly, push rod is stretched straight down, crossbeam length is adjusted according to width of roadway, and pacify along crossbeam
Fill the electric pushrod of sufficient tunneling boring measurement request suitable number；Each electric pushrod and displacement transducer, a pressure
The supporting installation of sensor, and probe is installed in push rod front end, electric pushrod motor internal can rotating, the elongation of drive push rod and receipts
Contracting；What displacement transducer can in real time measure electric pushrod stretches out value；Pressure sensor is arranged on electric pushrod leading portion, positioned at push rod
And probe between, the pressure suffered by probe front can be in real time measured；
The real-time locating modules of GPS are made up of GPS and GPS reference station, and GPS is arranged on measuring table dolly
On, it is used to determine plan-position coordinate (x, y) of dolly；GPS reference station is dynamic in real time by RTK (Real-time Kinematic)
State differential signal is wirelessly transmitted to GPS, to improve GPS location precision；The module is flat for obtaining any time measurement
The plan-position coordinate of platform dolly, and current measurement time and corresponding position coordinates are sent to integrated manipulator module.
Integrated manipulator module includes 24V power supplies, 12V power supplies, measurement start-stop controller and recording controller
Four parts；24V power supplies are powered to be stretched with stone dead wire to electric pushrod and draw motor to power, and 12V power supplies are to data control
Device and measurement start-stop controller are powered, while recording controller output 5V voltages are powered to displacement transducer and pressure sensor；
According to intervals, measurement start-stop controller sends enabling signal to electric pushrod, and measurement starts, and electric pushrod starts simultaneously
Push rod is stretched out；Meanwhile, measurement start-stop controller stretches drawing motor sending signal to stone dead wire, stretches drawing motor and rotates releasing mild steel
Silk, stone dead wire and rigid enclosure beam synchronously extend, and make measuring table dolly original place slack；Recording controller reads pressure in real time
The numerical value of sensor and displacement sensor, and according to contact set in advance and bottom out pressure, real-time judge probe
Whether initially enter and pave surface and whether reach basal plane；When the pressure value for measuring is more than contact, it is believed that probe has connect
The surface that paves is touched, now recording controller records the measured value L1 of the moment displacement transducer；When the pressure value for measuring is more than tactile
During bottom pressure, it is believed that probe has arrived at basal plane, now recording controller records the measured value L2 of the moment displacement transducer；So
Afterwards, recording controller calculates paving thickness, as H=L2-L1；When probe reaches basal plane, recording controller touches and measures
Only controller sends reverse signal to electric pushrod, and electric pushrod reversion certain hour is electronic to push away after probe extracts the face that paves
Bar is stopped；Then measurement start-stop controller is stretched drawing motor and is sent and shrinks stone dead wire signal to stone dead wire, stretches drawing motor reversal
Stone dead wire is shunk, after rigid enclosure beam retracted for clearance, measuring table dolly keep up with paver, drawing motor is stretched and is stopped；Finally,
Current measurement time and corresponding measuring table dolly position coordinates that recording controller gathers the real-time locating modules of GPS, with
And No. ID and its corresponding paving thickness value H of each electric pushrod is transferred to data wireless communication device (DTU) in the lump；
Present sample time and its corresponding measurement that data wireless sending module (DTU) sends over recording controller
Platform dolly coordinate, each electric pushrod ID and its corresponding paving thickness, through GPRS (General Packet Radio
Service, general packet radio service technology) network wireless is sent in remote data base and application server module.
Database and application server module mainly realize receiving and store that data wireless sending module transmitted is current
Time of measuring, the position coordinates of current time corresponding measuring table dolly, each electric pushrod ID and its corresponding stand
The data such as paving thickness value；Then according to measured by measuring point plan-position coordinate and pre-enter highway arrangement CAD diagram, it is determined that
Go out the highway pile No. of measuring point position, stored in the lump with received data, for subsequent analysis and client application.
Compared with the prior art, technical characterstic of the invention and effect：
(1) the automatic of pavement spread thickness data, high accuracy, Real-time Collection are realized, is effectively reduced due to artificial sample
The one-sidedness of the quality evaluation that limited amount brings；
(2) sampled point sampling time, absolute coordinate and paving thickness are can determine that, helps to indicate to be surveyed intuitively, exactly
Road surface absolute position corresponding when paving thickness is unqualified, is easy to instruct the quality in unqualified region to remedy；
(3) realize gathering the automatic transmission storage of each structure sheaf paving thickness data, can be monitored for follow-up paving thickness
Basic data is provided with alarm.
Brief description of the drawings
Fig. 1 present invention composition structure charts.
Fig. 2 paving thickness measurement module structure charts.
Fig. 3 integration principle figures of the present invention.
Specific embodiment
The present invention is patent " a kind of monitor in real time system of high grade highway pavement paving thickness in seminar's early stage application
Further developed on the basis of system (application number 201410057420.3) ", wherein the data wireless transport module in the present invention
(DTU) it is similar with early stage patent applied for (application number 201410057420.3)；Except that, early stage patent applied for is main
It is after the road surface elevation model before and after being paved from motion tracking total powerstation (robot measurement) measurement road surface structare layer is poor through work
To try to achieve paving thickness, and the present invention is to drive displacement transducer insertion pavement spread material using electric pushrod, by push rod
Forefront pressure sensor measures the face of paving and the displacement overhang corresponding to datum-level pressure value makees difference and draws paving thickness, and measurement
The determination of point position is using GPS (Global Position System, global positioning system) RTK (Real-time
Kinematic, real time dynamic differential) localization method, and non-automatic tracking total powerstation.
Present apparatus composition structure includes：It is measuring table dolly, paving thickness measurement module, the real-time locating modules of GPS, integrated
Controller module, data wireless sending module (DTU), database and application server module totally 6 part, see Fig. 1.
Measuring table dolly is by steel wheel, high-strength aluminum alloy vehicle frame, for installing other modules, (paving thickness measures mould
The real-time locating module of block, GPS, integrated manipulator module and data wireless sending module) left and right it is flexible to crossbeam and connection
Device etc. is constituted, and it is connected with paver using retractor device is connected, and is synchronously moved forward with paver.Connection retractor device
By the way of rigid enclosure beam is combined with stone dead wire, wherein, rigid enclosure beam is used for control platform dolly direct of travel, prevents dolly
Skew.Stone dead wire draws motor to rotate come folding and unfolding by stretching, and stone dead wire is released in paving thickness measurement process, and rigid enclosure beam is stretched
It is long, it is as you were to ensure measuring table dolly；After being measured, stretch drawing motor and reclaim stone dead wire, pull measuring table small
Car, rigid enclosure beam elongation position is restored, and platform dolly keeps up with paver movement.
Paving thickness measurement module includes electric pushrod, displacement transducer, pressure sensor and probe.Electric pushrod is installed
On the crossbeam of measuring table dolly, push rod is stretched straight down, crossbeam length is adjusted according to width of roadway, and pacify along crossbeam
Fill the electric pushrod of tunneling boring monitoring requirement suitable number.Each electric pushrod and displacement transducer, a pressure sensing
The supporting installation of device, and probe is installed in push rod front end, see Fig. 2.Electric pushrod motor internal can rotating, drive push rod elongation and
Shrink.What displacement transducer can in real time measure electric pushrod stretches out value；Pressure sensor is arranged on electric pushrod leading portion, positioned at pushing away
Between bar and probe, the pressure (surface resistance i.e. in insertion process) suffered by probe front can be in real time measured.
The real-time locating modules of GPS are made up of GPS and GPS reference station.GPS is arranged on measuring table dolly
On, it is used to determine plan-position coordinate (x, y) of dolly；GPS reference station is dynamic in real time by RTK (Real-time Kinematic)
State differential signal is wirelessly transmitted to GPS, to improve GPS location precision.The module is flat for obtaining any time measurement
The plan-position coordinate of platform dolly, and current measurement time and corresponding position coordinates are sent to integrated manipulator module.
Integrated manipulator module includes 24V power supplies, 12V power supplies, measurement start-stop controller and recording controller
Four parts.24V power supplies are powered to be stretched with stone dead wire to electric pushrod and draw motor to power, and 12V power supplies are to data control
Device and measurement start-stop controller are powered, while recording controller output 5V voltages are powered to displacement transducer and pressure sensor.
(can be determined divided by the paver speed of service according to the interval of measuring points distance for meeting engine request) according to intervals,
Measurement start-stop controller sends enabling signal to electric pushrod, and measurement starts, and electric pushrod starts and stretches out push rod；Meanwhile,
Measurement start-stop controller stretches drawing motor sending signal to stone dead wire, stretches drawing motor and releases stone dead wire (speed with certain rotational speed
Degree sets according to paver translational speed), stone dead wire and rigid enclosure beam synchronously extend, and measuring table dolly original place is stopped not
It is dynamic.Recording controller reads the numerical value of pressure sensor and displacement sensor in real time, and according to contact pressure set in advance
Power (P1) and pressure (P2) is bottomed out, whether whether real-time judge probe initially enters paves surface and reach basal plane.When what is measured
When pressure value is more than P1, it is believed that probe has contacted the surface that paves, and now recording controller records the survey of the moment displacement transducer
Value L1；When the pressure value for measuring is more than P2, it is believed that probe has arrived at basal plane, now recording controller records moment position
The measured value L2 of displacement sensor；Then, recording controller calculates paving thickness, as H=L2-L1.When probe reaches basal plane,
Recording controller touch measurement start-stop controller give electric pushrod send reverse signal, electric pushrod reversion certain hour (according to
Speed reversal and engineering paving thickness set reasonable time), after probe extracts the face that paves, electric pushrod is stopped.
Then measurement start-stop controller is stretched drawing motor and is sent and shrinks stone dead wire signal to stone dead wire, stretches drawing motor reversal and shrinks stone dead wire,
Through intervals (according to paver translational speed and stretching motor rotation speed, to keep up with paver amount of movement and be defined
Set the time), after rigid enclosure beam retracted for clearance, measuring table dolly keep up with paver, stretch drawing motor and be stopped.Most
Afterwards, recording controller gathers the real-time locating modules of GPS current measurement time and corresponding measuring table dolly position coordinates,
And No. ID and its corresponding paving thickness value H of each electric pushrod is transferred to data wireless communication device (DTU) in the lump.
Present sample time and its corresponding measurement that data wireless sending module (DTU) sends over recording controller
Platform dolly coordinate, each electric pushrod ID and its corresponding paving thickness, through GPRS (General Packet Radio
Service, general packet radio service technology) network wireless is sent in remote data base and application server module, in case
Subsequent applications.
Database and application server module mainly realize receiving and store that data wireless sending module transmitted is current
Time of measuring, the position coordinates of current time corresponding measuring table dolly, each electric pushrod ID and its corresponding stand
The data such as paving thickness value；Then according to measured by measuring point plan-position coordinate and pre-enter highway arrangement CAD diagram, it is determined that
Go out the highway pile No. of measuring point position, stored in the lump with received data, for subsequent analysis and client application.
Fig. 3 is integration principle figure of the invention.
To realize automatic highway pavement paving thickness, in real time high accuracy, measurement, a kind of public affairs are the embodiment of the invention provides
The plug-in type self-operated measuring unit of road pavement spread thickness, referring to Fig. 1, Fig. 2 and Fig. 3.The device includes：Measuring table dolly,
The real-time locating module of paving thickness measurement module, GPS, integrated manipulator module, data wireless sending module (DTU), database
With application server module totally six part.
(1) measuring table dolly
Measuring table dolly is other module (the real-time locating module of paving thickness measurement module, GPS, integrated manipulator moulds
Block and data wireless sending module) mounting platform, refer to Fig. 1.Measuring table dolly is used and independently ground in the embodiment of the present invention
System exploitation, including：4 steel wheels, light-weight frame, the left and right of 4 high-strength aluminum alloy compositions are to crossbeam and connection retractor device.
Connection retractor device covers beams, stretches and draw the stone dead wire of motor and certain length to constitute by two sections of rigid telescopics of equal length, is used for
Connection paver and platform dolly.Rigid enclosure beam controls measuring table dolly direct of travel, prevents dolly from offseting.Stone dead wire passes through
Stretch drawing motor and rotate and carry out folding and unfolding, motor rotates forward stone dead wire and releases, then stone dead wire is retracted for reversion.In paving thickness measurement process
Stone dead wire lengthens, the elongation of rigid enclosure beam, as you were to ensure measuring table dolly；After being measured, stretch drawing motor and reclaim soft
Steel wire pulls measuring table dolly, and rigid enclosure beam elongation position is restored, to keep up with paver movement.
(2) paving thickness measurement module
Referring to Fig. 2, paving thickness real-time measuring modules include：Electric pushrod, displacement transducer, pressure sensor and spy
Pin, it is supporting on measuring table dolly.
Electric pushrod is used for the telescopic process for driving whole paving thickness measurement apparatus to complete the whole material thickness measure that paves.
Push rod is driven elongation by motor internal rotating and is shunk.The grand vertical scientific and technological limited public affairs of electromechanics of electricity in the preferred Beijing of the embodiment of the present invention
The HLZ40-2-10-200-LT model direct current drive push rods of department, range is 1500kN, and the embodiment of the present invention is without limitation.
Direct current drive push rod is powered using 24V power supplies, is just being connect then motor and is being rotated forward, and push rod stretches out；Reversal connection then motor reversal, push rod contracting
Return, sending start-stop signal by integrated manipulator module in the present invention controls direct current push rod power on/off and commutation.
Displacement transducer is the range unit in paving thickness real-time measuring modules, by with electric pushrod synchronously stretch
Contracting, can in real time measure the shift value that stretches out of electric pushrod, and complete real time data reception, displacement sensing by integrated manipulator module
Device is by integrated manipulator module for power supply (supply voltage is 5V in the present invention).The embodiment of the present invention bright science and technology of preferred Shenzhen's rice has
The KTR-A self-recovering type linear displacement transducers of limit company production, its operation principle is similar with slide rheostat, with relative defeated
Go out voltage displacement actual on measured position is presented, range is 20cm, its output quantity is analog signal, finally through AD conversion
Convert analog signals into data signal.The embodiment of the present invention is without limitation.
Pressure sensor is used to measure the pressure value suffered by electric pushrod front-end probe, and the data for measuring are sent in real time
Integrated manipulator module.Pressure sensor is by integrated manipulator module for power supply (supply voltage is 5V in the present invention).It is of the invention real
The GNS-W08 pressure sensors of the preferred Shenzhen Jin Nuosheng Science and Technology Ltd.s of example are applied, range is 150kg, its output quantity is milli
Vor signal, converts to form data signal by AD.The embodiment of the present invention is without limitation.
Pop one's head in for reduce insertion when resistance, make whole paving thickness measurement apparatus be more easy to insertion pave material in complete survey
Amount process, probe length is 25cm in the embodiment of the present invention, and probe whole body is uiform section cylinder, and head is cone tips,
Afterbody process diameter 8cm internal threads, for pressure sensor Matching installation.The embodiment of the present invention is without limitation.
(3) the real-time locating modules of GPS
The real-time locating modules of GPS are made up of GPS and GPS reference station.GPS is arranged on measuring table dolly
On, it is used to determine plan-position coordinate (x, y) of measuring table dolly, (powered in the present invention by integrated manipulator module for power supply
Voltage is 12V).RTK (Real-time Kinematic) real time dynamic differential signal is wirelessly transmitted to GPS and connect by GPS reference station
Receipts machine, to improve GPS location precision (can reach Centimeter Level).In addition, GPS reference station can roll the monitoring system (heart with road roller
Wall rock-fill dam construction real-time quality monitoring method, patent No. ZL200910069245.9；Rolling process of corewall rock-fill dam information is certainly
Dynamic harvester, patent No. ZL200910069167.2) share, with cost-effective.The module by current time of measuring and its
Corresponding dolly position coordinates presses intervals (such as 1s), is sent to integrated manipulator mould in real time by RS-232 interface
Block.The R5GPS receivers of Tian Bao company of the preferred U.S. in the embodiment of the present invention, the embodiment of the present invention is without limitation.
(4) integrated manipulator module
Integrated manipulator module includes recording controller, measurement start-stop controller, 12V power supplies and 24V power supplies
Four parts.24V power supplies are powered to electric pushrod and are powered with stone dead wire stretching motor, and 12V power supplies are to recording controller
Powered with measurement start-stop controller, while recording controller exports 5V voltages powered to displacement transducer and pressure sensor, this
Inventive embodiments are without limitation.
The embodiment of the present invention using reaching the clouds Series Intelligent terminal control unit, wherein recording controller realize data reception,
Calculating, sending function, measurement start-stop controller send start-stop letter by RS-232 interface and .NET Gadgeeter standard interfaces
Number control soft drawn stretches the flexible of motor folding and unfolding stone dead wire and electric pushrod, by working out control program and the integrated reality of hardware device
Existing following functions：According to intervals, (the interval of measuring points distance according to engine request is met runs speed divided by paver
Degree determines), measurement start-stop controller sends enabling signal to electric pushrod, and measurement starts, and electric pushrod starts and stretches push rod
Go out；Meanwhile, measurement start-stop controller stretches drawing motor and sends enabling signal to stone dead wire, stretches drawing motor and is released with certain rotational speed
Stone dead wire (speed sets according to paver translational speed), stone dead wire elongation synchronous with rigid enclosure beam, makes measuring table dolly
Original place is slack.Recording controller is read in real time by .NET Gadgeeter standard interfaces and 20pin analog quantity daughterboard interfaces
The numerical value of pressure force snesor and displacement sensor, and according to contact (P set in advance1) and bottom out pressure (P2),
Whether whether real-time judge probe initially enters paves surface and reaches basal plane.When the pressure value for measuring is more than P1When, it is believed that visit
Pin has contacted the surface that paves, and now recording controller records the measured value L of the moment displacement transducer1；When the pressure value for measuring
More than P2When, it is believed that probe has arrived at basal plane, and now recording controller records the measured value L of the moment displacement transducer2；So
Afterwards, recording controller calculates paving thickness, as H=L2-L1.When probe reaches basal plane, recording controller touches measurement start-stop
Controller sends reverse signal to electric pushrod, and electric pushrod inverts certain hour (according to speed reversal and engineering paving thickness
To set reasonable time), after probe extracts the face that paves, electric pushrod is stopped.Then measurement start-stop controller is to soft
Steel wire is stretched drawing motor and is sent and shrinks stone dead wire signal, stretches drawing motor reversal and shrinks stone dead wire, through intervals (according to paving
Machine translational speed and stretching motor rotation speed, are defined by keeping up with paver amount of movement and set the time), treat that rigid enclosure beam is received
After contracting reset, measuring table dolly keep up with paver, stretch drawing motor and be stopped.Recording controller is by the real-time locating modules of GPS
The current measurement time of collection and corresponding dolly position coordinates, and each electric pushrod No. ID and corresponding paving thickness
Value H is cached in being put into FLASH memory, and is stored data temporarily using RAM memory and transmitted by RS-232 interface
Give data wireless communication device (DTU).Integrated manipulator embedded software uses Microsoft.NET Framework in the present invention
The C of platform#Language development, with writing, code efficiency is high, software debugging is directly perceived, maintenance upgrade is convenient and code recycling rate of waterused
High the advantages of.
(5) data wireless sending module (DTU)
The present sample time that data wireless base station apparatus (DTU) send over integrated manipulator by RS-232 interface
And its information such as corresponding measuring table dolly coordinate, each electric pushrod ID and its corresponding paving thickness value passes through
GSM (global system for mobile communications) communication module is sent to database and application server module.GSM communication modules can be using west
The sub- MC39i or Huawei GTM900b of door.The module routine is specific as follows：First, data wireless base station apparatus (DTU) will collect
It is put into FLASH memory by the data that RS-232 interface is transmitted into controller, then by caching, data with " stack "
Mode be sent to CPU (central processing unit), wherein, RAM memory is used for interim storage data.Then, CPU is carried out to data
IP (Internet Protocol, the agreement interconnected between network) changes, and gives GSM communication modules IP packets.Then,
GSM communication modules according to customization ICP/IP protocol, by certain time interval (such as 1s), by present sample time and its correspondence
The data such as measuring table dolly coordinate, each electric pushrod ID and its corresponding paving thickness value pass through GPRS
(General Packet Radio Service, general packet radio service technology) network wireless be sent to remote data base and
In application server module.In order to ensure the stability of data is activation, control program of the GSM communication modules to general gsm module
Carry out following improvement：(1) increase device data caching function, data are stored in the case where GPRS breaks, wait GPRS
When network connection is normal, then sent in the lump with follow-up data；(2) be ensure data transfer continuity, increase broken string redial work(
Energy.
(6) database and application server module
Database and application server module are mainly realized receiving and storing being transmitted by data wireless sending module (DTU)
Current measurement time, the position coordinates of current time measuring table dolly, each electric pushrod ID and corresponding pave
The data such as thickness value；Then according to measured by measuring point plan-position coordinate and pre-enter highway arrangement CAD diagram, determine
The highway pile No. of measuring point position, stores in the lump with received data, for subsequent analysis and client application.This
Using the Database Systems of enterprise-level version, such as SQL Server 2008 in invention.Server is connected by optical fiber
Internet, according to the server ip address of setting, DTU module sends data, and the data that will be received to the specified IP address
Storage provides basic data so that follow-up paving thickness is monitored in database with analysis.
Claims (2)
1. a kind of plug-in type self-operated measuring unit of highway pavement paving thickness, it is characterized in that, including：Measuring table dolly, stand
Spread thickness measure module, the real-time locating modules of GPS, integrated manipulator module, data wireless sending module DTU, database and answer
Use server module；
Measuring table dolly includes that paving thickness measurement module, GPS are real-time by steel wheel, high-strength aluminum alloy vehicle frame, for installation
The left and right of locating module, integrated manipulator module and data wireless sending module constitutes to crossbeam and connection retractor device, its
Connected using retractor device is connected with paver, and synchronously moved forward with paver；Connection retractor device uses rigid enclosure beam
The mode combined with stone dead wire, wherein, rigid enclosure beam is used for control platform dolly direct of travel, prevents dolly from offseting；Stone dead wire
Motor is drawn to rotate come folding and unfolding by stretching, stone dead wire is released in paving thickness measurement process, rigid enclosure beam elongation, to ensure measurement
Platform dolly is as you were；After being measured, the drawing motor of stretching in connection retractor device reclaims stone dead wire, pulls measuring table
Dolly, rigid enclosure beam elongation position is restored, and platform dolly keeps up with paver movement；
Paving thickness measurement module includes electric pushrod, displacement transducer, pressure sensor and probe；Electric pushrod is arranged on to be surveyed
Measure on the crossbeam of platform dolly, push rod is stretched straight down, crossbeam length is adjusted according to width of roadway, and install full along crossbeam
The electric pushrod of sufficient tunneling boring measurement request suitable number；Each electric pushrod and displacement transducer, a pressure sensing
The supporting installation of device, and probe is installed in push rod front end, electric pushrod motor internal can rotating, the elongation of drive push rod and contraction；
What displacement transducer can in real time measure electric pushrod stretches out value；Pressure sensor is arranged on electric pushrod leading portion, positioned at push rod and
Between probe, the pressure suffered by probe front can be in real time measured；
The real-time locating modules of GPS are made up of GPS and GPS reference station, and GPS is arranged on measuring table dolly,
It is used to determine plan-position coordinate (x, y) of dolly；Dynamic is poor in real time by RTK (Real-time Kinematic) for GPS reference station
Sub-signal is wirelessly transmitted to GPS, to improve GPS location precision；The module is small for obtaining any time measuring table
The plan-position coordinate of car, and current measurement time and corresponding position coordinates are sent to integrated manipulator module；
Integrated manipulator module includes 24V power supplies, 12V power supplies, measurement start-stop controller and recording controller four
Part；24V power supplies are powered to electric pushrod and stretch drawing motor with stone dead wire and power, 12V power supplies to recording controller and
Measurement start-stop controller is powered, while recording controller output 5V voltages are powered to displacement transducer and pressure sensor；According to
Intervals, measurement start-stop controller sends enabling signal to electric pushrod, and measurement starts, and electric pushrod starts and will push away
Bar stretches out；Meanwhile, measurement start-stop controller stretches drawing motor sending signal to stone dead wire, stretches drawing motor and rotates releasing stone dead wire, soft
Steel wire and rigid enclosure beam synchronously extend, and make measuring table dolly original place slack；Recording controller reads pressure sensing in real time
The numerical value of device and displacement sensor, and according to contact set in advance and pressure is bottomed out, whether real-time judge probe
Initially enter and pave surface and whether reach basal plane；When the pressure value for measuring is more than contact, it is believed that probe has contacted stand
Surface is spread, now recording controller records the measured value L1 of the moment displacement transducer；Pressure is bottomed out when the pressure value for measuring is more than
During power, it is believed that probe has arrived at basal plane, now recording controller records the measured value L2 of the moment displacement transducer；Then,
Recording controller calculates paving thickness, as H=L2-L1；When probe reaches basal plane, recording controller touches measurement start-stop control
Device processed sends reverse signal to electric pushrod, and electric pushrod inverts certain hour, and after probe extracts the face that paves, electric pushrod stops
Only work；Then measurement start-stop controller is stretched drawing motor and is sent and shrinks stone dead wire signal to stone dead wire, stretches drawing motor reversal and shrinks
Stone dead wire, after rigid enclosure beam retracted for clearance, measuring table dolly keep up with paver, stretches drawing motor and is stopped；Finally, data
Current measurement time and corresponding measuring table dolly position coordinates that controller gathers the real-time locating modules of GPS, and often
No. ID and its corresponding paving thickness value H of individual electric pushrod is transferred to data wireless communication device DTU in the lump；
The present sample time and its corresponding measuring table that data wireless sending module DTU sends over recording controller are small
Car coordinate, each electric pushrod ID and its corresponding paving thickness, through general packet radio service technology GPRS
(General Packet Radio Service) network wireless is sent in remote data base and application server module.
2. the plug-in type self-operated measuring unit of highway pavement paving thickness as claimed in claim 1, it is characterized in that, database and
Application server module is realized receiving and storing current measurement time, the current time correspondence that data wireless sending module is transmitted
The position coordinates of measuring table dolly, each electric pushrod ID and its corresponding paving thickness Value Data；Subsequent basis
Measured measuring point plan-position coordinate and the highway arrangement CAD diagram for pre-entering, determine the highway stake of measuring point position
Number, stored in the lump with received data, for subsequent analysis and client application.
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| CN201410810865.4A CN104634224B (en) | 2014-12-22 | 2014-12-22 | Highway pavement paving thickness plug-in automatic measuring device |
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