CN104634224A - 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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- CN104634224A CN104634224A CN201410810865.4A CN201410810865A CN104634224A CN 104634224 A CN104634224 A CN 104634224A CN 201410810865 A CN201410810865 A CN 201410810865A CN 104634224 A CN104634224 A CN 104634224A
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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, especially relate to the self-operated measuring unit of road surface structare layer paving thickness in a kind of high grade highway pavement paving process.
Technical background
In high grade highway pavement work progress, effectively controlling road surface paving thickness is the endurance quality improving highway, ensures the key of quality of road construction.In pavement construction, the method that steel wire collimation method is drawn in normal employing, erection balance beam combines with sensor
[1-4]paving thickness is controlled.For drawing steel wire collimation method, there is certain distance interval at the reference mark due to fixing wire, often makes the paving thickness between reference mark not easily accurately control.For erection balance beam method, bottom front and back end (reflection pave front and back end) the point position place structural sheet then needing to suppose beam, the elevation of (pave basal plane) is consistent, so just the difference of distance that records of the sensor of available beam front and back end is as the current position paving thickness that paves, but might not be identical at the elevation at measuring point place, practice of construction central sill front and back end, the paving thickness error of calculation can be brought thus.
The lossless detection method such as ground penetrating radar, ultrasound wave
[5-7]also the detection rolling rear road surface thickness has been widely applied to.These methods can detect the pavement spread thickness after compacting automatically, continuously, but owing to not installing the locating device of absolute position, the Cumulative Distance of just being advanced from initial measuring point by measuring and testing device is as the relative distance of surveyed paving thickness and initial measuring point.Like this, the absolute location coordinates corresponding to surveyed paving thickness cannot be obtained on the one hand; On the other hand, pick-up unit single-way moving forward must be kept in testing process, otherwise the accumulation travel distance of the numerical value measured from initial measuring point can not reflect the true relative distance of this pick-up unit and initial measuring point, thus absolute position, road surface corresponding when causing these methods that survey paving thickness can not be indicated intuitively, exactly defective.In addition, due to this kind of pick-up unit automobile body used is overweight or wheel tyre without special processing, be easy to sink on the hard pitch concrete road surface just paved or soften, the bituminous concrete pavement that detection has just paved can not be suitable for, cause these methods can only be suitable for the detection of the cooled pavement spread thickness of compacting, therefore not easily realize timely control and the adjustment of paving thickness in road pavement paving process.
According to the regulation of " Of Road Engineering Quality Checking And Evaluation standard " (JTGF80/1-2004), traditional pavement spread thickness manual detection adopts usually with machine transplanting of rice chi method
[8-10], but therefore kind method detection frequency is lower, and representative poor, cannot objectively respond the paving thickness on whole construction road surface, and the method is affected by human factors comparatively large, testing result may contain comparatively big error.Therefore, be necessary to develop and a kind ofly can overcome interference from human factor, high precision, automatic, real-time highway pavement paving thickness measurement mechanism, guarantee high grade highway pavement spreading quality.
List of references:
[1] Ha Musiwoke. paving thickness detection system and the balance beam system with this system [P], patent of invention ZL201310114784.X, 2013
[2] Zhang Guanghai, He Kezhong. the analysis of auto leveling system of paver height sensor with compare [J]. road building machine and mechanization of building operation, 1999 (6): 12-13
[3] skin Yadong. the development [D] of auto leveling system of paver. Heilungkiang: Harbin Institute of Technology, 2007
[4] Zhang Jinchun. the laser controller [P] of sub-base grader adjustment elevation. China, utility model patent, ZL00237000.X, 2000
[5] Zou Jinping. Ground Penetrating Radar detection system is in bituminous pavement paving Thickness sensitivity and the utilization [J] in control. Shanghai highway, 2002 (2): 9-10
[6]Dwayne Arthur Harris.Pavement Thickness Evaluation Using Ground Penetrating Radar[D].Purdue University，2006
[7] Yuan Yiyong, Lin Weizheng. the development of concrete road face thickness ultrasound measuring instrument and application [J]. Non-Destructive Testing, 1995 (7): 181-183
[8] People's Republic of China's industry standard. Of Road Engineering Quality Checking And Evaluation standard, JTG F80/1-2004 [S]. Beijing: People's Transportation Press, 2004
[9] People's Republic of China's industry standard. highway technology status assessment standard, JTG H20-2007 [S]. Beijing: People's Transportation Press, 2007
[10] Tang Song, Tang Xiangwei. asphalt paving thickness measurement chi [P]. China, utility model patent, 201220017841.X, 2012.
Summary of the invention
For overcoming the deficiencies in the prior art, there is provided can realize highway pavement paving thickness automatically, high precision, the device measured in real time, both the real-time measurement of pavement spread thickness can have been realized, long-range for the metrical information database that is sent to can be supplied subsequent quality evaluate application again, carry out the foundation of spreading quality management as relevant departments.For this reason, the technical scheme that the present invention takes is, the plug-in type self-operated measuring unit of highway pavement paving thickness, comprising: measuring table dolly, paving thickness measurement module, the real-time locating module of GPS, integrated manipulator module, data wireless sending module (DTU), database and application server module;
Measuring table dolly by steel wheel, high-strength aluminum alloy vehicle frame, for install comprise paving thickness measurement module, the real-time locating module of GPS, integrated manipulator module and data wireless sending module left and right to crossbeam and be connected retractor device and form, itself and paver adopt and are connected retractor device and connect, and synchronously move forward with paver; Connect the mode that retractor device adopts rigid enclosure beam to be combined with stone dead wire, wherein, rigid enclosure beam is used for parametric controller dolly direct of travel, prevents dolly from offseting; Stone dead wire draws electric machine rotation to carry out folding and unfolding by stretching, and in paving thickness measuring process, stone dead wire is released, and rigid enclosure beam extends, as you were to ensure measuring table dolly; After measurement completes, connect stretching in retractor device and draw motor to reclaim stone dead wire, pull measuring table dolly, rigid enclosure beam extends position and restores, and platform dolly is caught up with paver and moved;
Paving thickness measurement module comprises electric pushrod, displacement transducer, pressure transducer and probe; Electric pushrod is arranged on the crossbeam of measuring table dolly, and push rod is stretched straight down, according to width of roadway adjustment crossbeam length, and meets along crossbeam installation the electric pushrod that tunneling boring measurement requires suitable number; Each electric pushrod and a displacement transducer, a supporting installation of pressure transducer, and probe is installed in push rod front end, electric pushrod motor internal can rotating, drives push rod to extend and shrinks; What displacement transducer can record electric pushrod in real time stretches out value; Pressure transducer is arranged on electric pushrod leading portion, between push rod and probe, can record the pressure suffered by probe front in real time;
The real-time locating module of GPS is made up of GPS and GPS base station, and GPS is arranged on measuring table dolly, in order to determine planimetric position coordinate (x, y) of dolly; RTK (Real-time Kinematic) real time dynamic differential signal wireless is sent to GPS, to improve GPS positioning precision by GPS base station; Current measurement time and corresponding position coordinates for obtaining the planimetric position coordinate of any time measuring table dolly, and are sent to integrated manipulator module by this module.
Integrated manipulator module comprises 24V power supply, 12V power supply, measures start-stop controller and recording controller four parts; 24V power supply is powered to electric pushrod and stone dead wire is stretched and drawn feeding electric motors, and 12V power supply is to recording controller and measure start-stop controller and power, and recording controller exports 5V voltage and powers to displacement transducer and pressure transducer simultaneously; According to certain hour interval, measure start-stop controller and send enabling signal to electric pushrod, measure and start, electric pushrod starts and is stretched out by push rod; Meanwhile, measurement start-stop controller is stretched to stone dead wire and is drawn motor to send signal, and stretch and draw electric machine rotation to release stone dead wire, stone dead wire and rigid enclosure beam synchronously extend, and make measuring table dolly original place slack; Recording controller reads the numerical value of pressure transducer and displacement sensor in real time, and according to the contact preset and tactile bottom pressure, and whether real-time judge probe starts to enter the surface and whether arrive basal plane of paving; When the force value recorded is greater than contact, think that probe contacts the surface that paves, now the measured value L1 of this moment displacement transducer of recording controller record; When the force value recorded is greater than tactile bottom pressure, think that probe arrives basal plane, now the measured value L2 of this moment displacement transducer of recording controller record; Then, recording controller calculates paving thickness, is H=L2-L1; When probe arrives basal plane, recording controller touches measurement start-stop controller and sends reverse signal to electric pushrod, electric pushrod reversion certain hour, and extract behind the face of paving until probe, electric pushrod quits work; The controller of measurement start-stop is subsequently stretched to stone dead wire and is drawn motor to send contraction stone dead wire signal, stretches and draws motor reversal to shrink stone dead wire, after paver caught up with by rigid enclosure beam retracted for clearance, measuring table dolly, stretch and draw motor to quit work; Finally, the current measurement time that real-time for GPS locating module gathers by recording controller and corresponding measuring table dolly position coordinates, and the paving thickness value H of each electric pushrod No. ID and correspondence is transferred to data wireless communication device (DTU) in the lump;
The measuring table dolly coordinate of the present sample time that recording controller sends over by data wireless sending module (DTU) and correspondence thereof, No. ID, each electric pushrod and corresponding paving thickness thereof, be sent in remote data base and application server module through GPRS (General Packet Radio Service, general packet radio service technology) network wireless.
Database and application server module mainly realize receiving and the data such as storage data wireless sending module current measurement time, the position coordinates of measuring table dolly that current time is corresponding, No. ID, each electric pushrod and the corresponding paving thickness value thereof transmitted; Arrange CAD figure according to measured measuring point planimetric position coordinate and the highway that pre-enters subsequently, determine the highway pile No. of measuring point position, store in the lump with received data, for subsequent analysis and client application.
Compared with the prior art, technical characterstic of the present invention and effect:
(1) realize automatic, high precision, the Real-time Collection of pavement spread thickness data, effectively can reduce the one-sidedness of the quality evaluation brought due to artificial sample limited amount;
(2) sampled point sampling time, absolute coordinates and paving thickness can be determined, contribute to intuitively, exactly instruction survey paving thickness defective time corresponding absolute position, road surface, be convenient to instruct the quality in defective region to remedy;
(3) realize the automatic transmission that institute gathers each structural sheet paving thickness data to put in storage, can be follow-up paving thickness monitoring and alarm and basic data is provided.
Accompanying drawing explanation
Fig. 1 the present invention forms structural drawing.
Fig. 2 paving thickness measurement module structural drawing.
Fig. 3 integration principle figure of the present invention.
Embodiment
The present invention develops further on patent " a kind of real-time monitoring system (application number 201410057420.3) of the high grade highway pavement paving thickness " basis of seminar's application in early stage, and the data wireless transport module (DTU) wherein in the present invention is similar with patent applied in early stage (application number 201410057420.3), difference is, early stage patent applied for mainly by from motion tracking total powerstation (robot measurement) measure road surface structare layer pave before and after road surface elevation model through do difference tried to achieve paving thickness afterwards, and the present invention utilizes electric pushrod to drive displacement transducer to insert pavement spread material, make difference by the push rod forefront pressure sensor displacement overhang recorded corresponding to the face of paving and datum-level pressure value and draw paving thickness, and the determination of measurement point position adopts GPS (Global Position System, GPS) RTK (Real-time Kinematic, real time dynamic differential) localization method, and non-automatic tracking total powerstation.
This device composition structure comprises: measuring table dolly, paving thickness measurement module, the real-time locating module of GPS, integrated manipulator module, data wireless sending module (DTU), database and application server module totally 6 parts, sees Fig. 1.
Measuring table dolly by steel wheel, high-strength aluminum alloy vehicle frame, for the left and right of installing other modules (the real-time locating module of paving thickness measurement module, GPS, integrated manipulator module and data wireless sending module) to crossbeam and be connected retractor device etc. and form, itself and paver adopt and are connected retractor device and connect, and synchronously move forward with paver.Connect the mode that retractor device adopts rigid enclosure beam to be combined with stone dead wire, wherein, rigid enclosure beam is used for parametric controller dolly direct of travel, prevents dolly from offseting.Stone dead wire draws electric machine rotation to carry out folding and unfolding by stretching, and in paving thickness measuring process, stone dead wire is released, and rigid enclosure beam extends, as you were to ensure measuring table dolly; After measurement completes, stretch and draw motor to reclaim stone dead wire, pull measuring table dolly, rigid enclosure beam extends position and restores, and platform dolly is caught up with paver and moved.
Paving thickness measurement module comprises electric pushrod, displacement transducer, pressure transducer and probe.Electric pushrod is arranged on the crossbeam of measuring table dolly, and push rod is stretched straight down, according to width of roadway adjustment crossbeam length, and installs the electric pushrod of tunneling boring monitoring requirement suitable number along crossbeam.Each electric pushrod and a displacement transducer, a supporting installation of pressure transducer, and in push rod front end, probe is installed, see Fig. 2.Electric pushrod motor internal can rotating, drives push rod to extend and shrinks.What displacement transducer can record electric pushrod in real time stretches out value; Pressure transducer is arranged on electric pushrod leading portion, between push rod and probe, can record the pressure (surface resistance namely in insertion process) suffered by probe front in real time.
The real-time locating module of GPS is made up of GPS and GPS base station.GPS is arranged on measuring table dolly, in order to determine planimetric position coordinate (x, y) of dolly; RTK (Real-time Kinematic) real time dynamic differential signal wireless is sent to GPS, to improve GPS positioning precision by GPS base station.Current measurement time and corresponding position coordinates for obtaining the planimetric position coordinate of any time measuring table dolly, and are sent to integrated manipulator module by this module.
Integrated manipulator module comprises 24V power supply, 12V power supply, measures start-stop controller and recording controller four parts.24V power supply is powered to electric pushrod and stone dead wire is stretched and drawn feeding electric motors, and 12V power supply is to recording controller and measure start-stop controller and power, and recording controller exports 5V voltage and powers to displacement transducer and pressure transducer simultaneously.According to certain hour interval (can determining divided by paver travelling speed according to the measurement point spacing distance meeting engine request), measure start-stop controller and send enabling signal to electric pushrod, measure and start, electric pushrod starts and is stretched out by push rod; Simultaneously, measurement start-stop controller is stretched to stone dead wire and is drawn motor to send signal, stretch and draw motor to release stone dead wire (this speed is according to the setting of paver translational speed) with certain rotational speed, stone dead wire and rigid enclosure beam synchronously extend, and make measuring table dolly original place slack.Recording controller reads the numerical value of pressure transducer and displacement sensor in real time, and according to the contact preset (P1) and tactile bottom pressure (P2), whether real-time judge probe starts to enter the surface and whether arrive basal plane of paving.When the force value recorded is greater than P1, think that probe contacts the surface that paves, now the measured value L1 of this moment displacement transducer of recording controller record; When the force value recorded is greater than P2, think that probe arrives basal plane, now the measured value L2 of this moment displacement transducer of recording controller record; Then, recording controller calculates paving thickness, is H=L2-L1.When probe arrives basal plane, recording controller touches measurement start-stop controller and sends reverse signal to electric pushrod, electric pushrod reversion certain hour (setting reasonable time according to speed reversal and engineering paving thickness), extract behind the face of paving until probe, electric pushrod quits work.The controller of measurement start-stop is subsequently stretched to stone dead wire and is drawn motor to send contraction stone dead wire signal, stretch and draw motor reversal to shrink stone dead wire, through certain hour interval (according to paver translational speed and stretching motor rotation speed, with catch up with paver amount of movement be as the criterion set this time), after paver caught up with by rigid enclosure beam retracted for clearance, measuring table dolly, stretch and draw motor to quit work.Finally, the current measurement time that real-time for GPS locating module gathers by recording controller and corresponding measuring table dolly position coordinates, and the paving thickness value H of each electric pushrod No. ID and correspondence is transferred to data wireless communication device (DTU) in the lump.
The measuring table dolly coordinate of the present sample time that recording controller sends over by data wireless sending module (DTU) and correspondence thereof, No. ID, each electric pushrod and corresponding paving thickness thereof, through GPRS (General Packet Radio Service, general packet radio service technology) network wireless is sent in remote data base and application server module, in order to subsequent applications.
Database and application server module mainly realize receiving and the data such as storage data wireless sending module current measurement time, the position coordinates of measuring table dolly that current time is corresponding, No. ID, each electric pushrod and the corresponding paving thickness value thereof transmitted; Arrange CAD figure according to measured measuring point planimetric position coordinate and the highway that pre-enters subsequently, determine the highway pile No. of measuring point position, store in the lump with received data, for subsequent analysis and client application.
Fig. 3 is integration principle figure of the present invention.
For realize highway pavement paving thickness automatically, high precision, real-time measurement, embodiments provide a kind of plug-in type self-operated measuring unit of highway pavement paving thickness, see Fig. 1, Fig. 2 and Fig. 3.This device comprises: measuring table dolly, paving thickness measurement module, the real-time locating module of GPS, integrated manipulator module, data wireless sending module (DTU), database and application server module totally six parts.
(1) measuring table dolly
Measuring table dolly is the mounting platform of other modules (the real-time locating module of paving thickness measurement module, GPS, integrated manipulator module and data wireless sending module), refers to Fig. 1.In the embodiment of the present invention, measuring table dolly adopts independent research and development, comprising: the light-weight frame of 4 steel wheels, 4 high-strength aluminum alloy compositions, left and right is to crossbeam and connect retractor device.Connect retractor device to be overlapped beam by the rigid telescopic of two sections of equal lengths, stretched and draw the stone dead wire of motor and certain length to form, for connecting paver and platform dolly.Rigid enclosure beam control survey platform dolly direct of travel, prevents dolly from offseting.Stone dead wire draws electric machine rotation to carry out folding and unfolding by stretching, and motor rotates forward stone dead wire and releases, and reverse, stone dead wire is retracted.In paving thickness measuring process, stone dead wire lengthens, and rigid enclosure beam extends, as you were to ensure measuring table dolly; After measurement completes, stretch and draw motor recovery stone dead wire to pull measuring table dolly, rigid enclosure beam extends position and restores, and moves to catch up with paver.
(2) paving thickness measurement module
See Fig. 2, paving thickness real-time measuring modules comprises: electric pushrod, displacement transducer, pressure transducer and probe, is all supportingly arranged on measuring table dolly.
The telescopic process of electric pushrod for driving whole paving thickness measurement mechanism to complete the whole material thickness measure that paves.Push rod is driven by motor internal rotating and extends and shrink.The HLZ40-2-10-200-LT model direct current drive push rod of the preferred Beijing Zhong electricity Hong Li Electromechanical Technology Co., Ltd of the embodiment of the present invention, range is 1500kN, and the embodiment of the present invention does not limit this.Direct current drive push rod adopts 24V power supply to power, and just connecing then motor and rotating forward, push rod stretches out; Reversal connection is motor reversal then, pusher retracted, sends start-stop signal control direct current push rod power on/off and commutation in the present invention by integrated manipulator module.
Displacement transducer is the distance measuring equipment in paving thickness real-time measuring modules, by the synchronization telescope with electric pushrod, what can record electric pushrod in real time stretches out shift value, and completing real time data reception by integrated manipulator module, displacement transducer is by integrated manipulator module for power supply (in the present invention, supply voltage is 5V).The KTR-A self-recovering type linear displacement transducer that the preferred Shenzhen Miran Technology Co., Ltd. of the embodiment of the present invention produces, its principle of work and slide rheostat similar, displacement actual on measured position is presented with relative output voltage, range is 20cm, its output quantity is simulating signal, finally through AD conversion, simulating signal is converted to digital signal.The embodiment of the present invention does not limit this.
Pressure transducer is for measuring the force value suffered by electric pushrod front-end probe, and the data recorded are sent to integrated manipulator module in real time.Pressure transducer is by integrated manipulator module for power supply (in the present invention, supply voltage is 5V).The GNS-W08 pressure transducer of Jin Nuosheng Science and Technology Ltd. of the embodiment of the present invention preferred Shenzhen, range is 150kg, and its output quantity is millivolt signal, transforms form digital signal through AD.The embodiment of the present invention does not limit this.
Pop one's head in for reducing resistance when inserting, whole paving thickness measurement mechanism is more easily inserted pave to complete measuring process in material, in the embodiment of the present invention, probe length is 25cm, probe whole body is uniform cross section right cylinder, head is cone tips, afterbody processing diameter 8cm internal thread, for pressure transducer Matching installation.The embodiment of the present invention does not limit this.
(3) the real-time locating module of GPS
The real-time locating module of GPS is made up of GPS and GPS base station.GPS is arranged on measuring table dolly, in order to determine planimetric position coordinate (x, y) of measuring table dolly, by integrated manipulator module for power supply (in the present invention, supply voltage is 12V).RTK (Real-time Kinematic) real time dynamic differential signal wireless is sent to GPS by GPS base station, to improve GPS positioning precision (can reach centimetre-sized).In addition, GPS base station can roll supervisory system (real-time monitoring method for construction quality of core rockfill dam, patent No. ZL200910069245.9 with street roller; Automatic information collecting device during rolling process of corewall rock-fill dam, patent No. ZL200910069167.2) share, to save cost.The dolly position coordinates of current Measuring Time and correspondence thereof is pressed certain hour interval (as 1s) by this module, is sent to integrated manipulator module in real time by RS-232 interface.The R5GPS receiver of Tian Bao company of the preferred U.S. in the embodiment of the present invention, the embodiment of the present invention does not limit this.
(4) integrated manipulator module
Integrated manipulator module comprises recording controller, measures start-stop controller, 12V power supply and 24V power supply four part.24V power supply is powered and stone dead wire stretching feeding electric motors to electric pushrod, 12V power supply is powered to recording controller and measurement start-stop controller, the 5V of recording controller output simultaneously voltage is powered to displacement transducer and pressure transducer, and the embodiment of the present invention does not limit this.
The embodiment of the present invention adopts Series Intelligent terminal control unit of reaching the clouds, wherein recording controller realizes the reception of data, calculate, sending function, measure start-stop controller by RS-232 interface and .NET Gadgeeter standard interface, send start-stop signal to control soft drawn and stretch the flexible of motor folding and unfolding stone dead wire and electric pushrod, by establishment control program and hardware device integration realization following functions: according to certain hour interval (the measurement point spacing distance according to meeting engine request is determined divided by paver travelling speed), measure start-stop controller and send enabling signal to electric pushrod, measure and start, electric pushrod starts and push rod is stretched out, simultaneously, measurement start-stop controller is stretched to stone dead wire and is drawn motor to send enabling signal, stretch and draw motor to release stone dead wire (this speed is according to the setting of paver translational speed) with certain rotational speed, stone dead wire and rigid enclosure beam synchronously extend, and make measuring table dolly original place slack.Recording controller reads the numerical value of pressure transducer and displacement sensor in real time by .NET Gadgeeter standard interface and 20pin analog quantity daughterboard interface, and according to the contact (P preset
1) and tactile bottom pressure (P
2), whether real-time judge probe starts to enter the surface and whether arrive basal plane of paving.When the force value recorded is greater than P
1time, think that probe contacts the surface that paves, now the measured value L of this moment displacement transducer of recording controller record
1; When the force value recorded is greater than P
2time, think that probe arrives basal plane, now the measured value L of this moment displacement transducer of recording controller record
2; Then, recording controller calculates paving thickness, is H=L
2-L
1.When probe arrives basal plane, recording controller touches measurement start-stop controller and sends reverse signal to electric pushrod, electric pushrod reversion certain hour (setting reasonable time according to speed reversal and engineering paving thickness), extract behind the face of paving until probe, electric pushrod quits work.The controller of measurement start-stop is subsequently stretched to stone dead wire and is drawn motor to send contraction stone dead wire signal, stretch and draw motor reversal to shrink stone dead wire, through certain hour interval (according to paver translational speed and stretching motor rotation speed, with catch up with paver amount of movement be as the criterion set this time), after paver caught up with by rigid enclosure beam retracted for clearance, measuring table dolly, stretch and draw motor to quit work.The current measurement time that real-time for GPS locating module gathers by recording controller and corresponding dolly position coordinates, and the paving thickness value H of each electric pushrod No. ID and correspondence puts into FLASH memory and carries out buffer memory, and utilize RAM storer temporary storage data and be transferred to data wireless communication device (DTU) by RS-232 interface.In the present invention, integrated manipulator embedded software adopts the C of Microsoft.NET Framework platform
#language development, has and writes that code efficiency is high, software debugging is directly perceived, maintenance upgrade is convenient and code recycling rate of waterused advantages of higher.
(5) data wireless sending module (DTU)
Measuring table dolly coordinate, the information such as No. ID, each electric pushrod and corresponding paving thickness value thereof of the present sample time that integrated manipulator is sended over by RS-232 interface by data wireless dispensing device (DTU) and correspondence thereof are sent to database and application server module by GSM (global system for mobile communications) communication module.GSM communication module can adopt Siemens MC 39i or Huawei GTM900b.This module routine is specific as follows: first, the data that integrated manipulator is transmitted by RS-232 interface are put into FLASH memory by data wireless dispensing device (DTU), pass through buffer memory again, data are sent to CPU (central processing unit) in the mode of " stack ", wherein, RAM storer is used for temporary storage data.Then, CPU carries out IP (Internet Protocol, the agreement interconnected between network) to data and changes, and gives GSM communication module IP packet.Then, GSM communication module is according to the ICP/IP protocol of customization, by certain time interval (as 1s), the data such as the measuring table dolly coordinate of present sample time and correspondence thereof, No. ID, each electric pushrod and corresponding paving thickness value thereof are sent in remote data base and application server module by GPRS (General Packet Radio Service, general packet radio service technology) network wireless.In order to ensure the stability that data send, GSM communication module carries out following improvement to the control program of general gsm module: (1) increases device data caching function, when GPRS breaks, data are stored, when connecting normal etc. GPRS network, then send in the lump with follow-up data; (2) for ensureing the continuity of data transmission, broken string redialing function is increased.
(6) database and application server module
Database and application server module mainly realize receiving and store current measurement time, the position coordinates of current time measuring table dolly, the data such as No. ID, each electric pushrod and corresponding paving thickness value transmitted by data wireless sending module (DTU); Arrange CAD figure according to measured measuring point planimetric position coordinate and the highway that pre-enters subsequently, determine the highway pile No. of measuring point position, store in the lump with received data, for subsequent analysis and client application.The Database Systems of enterprise-level version are adopted, as SQL Server 2008 in the present invention.Server is by Fiber connection Internet, and according to the server ip address of setting, the data received to this assigned ip address transmission data, and store in a database by DTU module, provide basic data for follow-up paving thickness monitoring with analysis.
Claims (2)
1. the plug-in type self-operated measuring unit of a highway pavement paving thickness, it is characterized in that, comprising: measuring table dolly, paving thickness measurement module, the real-time locating module of GPS, integrated manipulator module, data wireless sending module (DTU), database and application server module;
Measuring table dolly by steel wheel, high-strength aluminum alloy vehicle frame, for install comprise paving thickness measurement module, the real-time locating module of GPS, integrated manipulator module and data wireless sending module left and right to crossbeam and be connected retractor device and form, itself and paver adopt and are connected retractor device and connect, and synchronously move forward with paver; Connect the mode that retractor device adopts rigid enclosure beam to be combined with stone dead wire, wherein, rigid enclosure beam is used for parametric controller dolly direct of travel, prevents dolly from offseting; Stone dead wire draws electric machine rotation to carry out folding and unfolding by stretching, and in paving thickness measuring process, stone dead wire is released, and rigid enclosure beam extends, as you were to ensure measuring table dolly; After measurement completes, connect stretching in retractor device and draw motor to reclaim stone dead wire, pull measuring table dolly, rigid enclosure beam extends position and restores, and platform dolly is caught up with paver and moved;
Paving thickness measurement module comprises electric pushrod, displacement transducer, pressure transducer and probe; Electric pushrod is arranged on the crossbeam of measuring table dolly, and push rod is stretched straight down, according to width of roadway adjustment crossbeam length, and meets along crossbeam installation the electric pushrod that tunneling boring measurement requires suitable number; Each electric pushrod and a displacement transducer, a supporting installation of pressure transducer, and probe is installed in push rod front end, electric pushrod motor internal can rotating, drives push rod to extend and shrinks; What displacement transducer can record electric pushrod in real time stretches out value; Pressure transducer is arranged on electric pushrod leading portion, between push rod and probe, can record the pressure suffered by probe front in real time;
The real-time locating module of GPS is made up of GPS and GPS base station, and GPS is arranged on measuring table dolly, in order to determine planimetric position coordinate (x, y) of dolly; RTK (Real-time Kinematic) real time dynamic differential signal wireless is sent to GPS, to improve GPS positioning precision by GPS base station; Current measurement time and corresponding position coordinates for obtaining the planimetric position coordinate of any time measuring table dolly, and are sent to integrated manipulator module by this module.
Integrated manipulator module comprises 24V power supply, 12V power supply, measures start-stop controller and recording controller four parts; 24V power supply is powered to electric pushrod and stone dead wire is stretched and drawn feeding electric motors, and 12V power supply is to recording controller and measure start-stop controller and power, and recording controller exports 5V voltage and powers to displacement transducer and pressure transducer simultaneously; According to certain hour interval, measure start-stop controller and send enabling signal to electric pushrod, measure and start, electric pushrod starts and is stretched out by push rod; Meanwhile, measurement start-stop controller is stretched to stone dead wire and is drawn motor to send signal, and stretch and draw electric machine rotation to release stone dead wire, stone dead wire and rigid enclosure beam synchronously extend, and make measuring table dolly original place slack; Recording controller reads the numerical value of pressure transducer and displacement sensor in real time, and according to the contact preset and tactile bottom pressure, and whether real-time judge probe starts to enter the surface and whether arrive basal plane of paving; When the force value recorded is greater than contact, think that probe contacts the surface that paves, now the measured value L1 of this moment displacement transducer of recording controller record; When the force value recorded is greater than tactile bottom pressure, think that probe arrives basal plane, now the measured value L2 of this moment displacement transducer of recording controller record; Then, recording controller calculates paving thickness, is H=L2-L1; When probe arrives basal plane, recording controller touches measurement start-stop controller and sends reverse signal to electric pushrod, electric pushrod reversion certain hour, and extract behind the face of paving until probe, electric pushrod quits work; The controller of measurement start-stop is subsequently stretched to stone dead wire and is drawn motor to send contraction stone dead wire signal, stretches and draws motor reversal to shrink stone dead wire, after paver caught up with by rigid enclosure beam retracted for clearance, measuring table dolly, stretch and draw motor to quit work; Finally, the current measurement time that real-time for GPS locating module gathers by recording controller and corresponding measuring table dolly position coordinates, and the paving thickness value H of each electric pushrod No. ID and correspondence is transferred to data wireless communication device (DTU) in the lump;
The measuring table dolly coordinate of the present sample time that recording controller sends over by data wireless sending module (DTU) and correspondence thereof, No. ID, each electric pushrod and corresponding paving thickness thereof, be sent in remote data base and application server module through GPRS (General Packet Radio Service, general packet radio service technology) network wireless.
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 mainly realize receiving and the data such as storage data wireless sending module current measurement time, the position coordinates of measuring table dolly that current time is corresponding, No. ID, each electric pushrod and the corresponding paving thickness value thereof transmitted; Arrange CAD figure according to measured measuring point planimetric position coordinate and the highway that pre-enters subsequently, determine the highway pile No. of measuring point position, store in the lump with received data, for subsequent analysis and client application.
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