CN101545240B - Photoelectric deflection fast detector - Google Patents
Photoelectric deflection fast detector Download PDFInfo
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- CN101545240B CN101545240B CN2009100220477A CN200910022047A CN101545240B CN 101545240 B CN101545240 B CN 101545240B CN 2009100220477 A CN2009100220477 A CN 2009100220477A CN 200910022047 A CN200910022047 A CN 200910022047A CN 101545240 B CN101545240 B CN 101545240B
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Abstract
The invention relates to a photoelectric deflection fast detector used for detecting pavement deflection indexes, comprising a plurality of hollow short deflection detection beams which are sequentially combined and connected along the length direction, a linear laser array lighting source device, a backward collimated laser device, a photoelectric receiving sensor installed behind the final short deflection detection beam and a forward collimated laser device installed at the upper part of the photoelectric receiving sensor; and the linear laser array lighting source device and the backward collimated laser device are respectively arranged at the front end and the rear end of the first short deflection detection beam. Light beams emitted by the linear laser array lighting source device are transmitted to the photoelectric receiving sensor; in the practical structure, the short deflection detection beams can form a telescopic type, a segmental combined type or a folding segmental typelong straight deflection detection beams through the mode of sequential sleeved connection, bolting connection or articulated connection of the short deflection detection beams. The product has the advantages of reasonable structure, convenient and labor-saving operation, high measuring accuracy, high safety, high intelligent degree, and the like, and is especially suitable for the deflection survey of large-area pavements.
Description
Technical field
Content of the present invention belongs to road quality pick-up unit technical field, relates to a kind of laser fast detecting instrument that is used to detect the pavement deflection index.
Background technology
Pavement deflection is to estimate a particularly important indicator of express highway pavement intensity of each standard highway.At present, be used for the most frequently used drop hammer type flexure method that mainly contains the graceful beam flexure of the Bake ear detection method that detects the road surface rebound deflection, the continuous pavement flexure detection method that detects the total flexure in road surface and detect the dynamic flexure in road surface of method that pavement deflection detects, the roller type benkelman beams deflectometer detection method of researching and developing in recent years in addition in addition, the detection of laser dopper flowmeter high speed benkelman beams deflectometer etc., but the latter is because still to have some gordian techniquies to need on technical, the theoretical method to be solved, thus its in real work, use seldom.
Just at present relatively commonly used based on regard to the graceful beam flexure of the Bake ear detection method, though also there are many weak points in it in actual detected, still adopt artificial acquisition and recording data as this detection method, usually need close traffic for personal safety during detection, working strength is big, safe coefficient is low, detection efficiency is not high yet, but because this detection method is the basis of all other pavement deflection detection methods, require the testing result of all other detection methods to carry out the relevant correlationship formula of demarcating and set up in actual use with the graceful beam flexure of Bake ear detection method, therefore, no matter in road construction or in road maintenance, the detection of pavement deflection index also be unable to do without the graceful beam flexure of Bake ear detection method at present.
The method of utilizing Bake ear Man Liang to detect pavement deflection is: by means of Bake ear Man Liang, generally need be operated by four-player, wherein two people lift fortune Bake ear Man Liang, and a people carries out meter reading, and a people does hand-kept.Detect the principle of flexure from the Bake ear Man Liang of present employing, not only operation format is wasted time and energy, and each measuring point is long detection time, and reading value also usually is subjected to the influence of extraneous factor as the vibration interference of driving vehicle nearby, extraneous wind-force etc.
Summary of the invention
In view of the special status of the graceful beam flexure of Bake ear detection method and the situation of widespread use, be necessary on existing detecting instrument structure, the deficiency of its existence to be improved, spy of the present invention for this reason provides a kind of photoelectric deflection fast detector based on the graceful beam flexure of Bake ear detection method of novel and reasonable structure, makes it to reach not only to have improved detection efficiency, but also improved precision and detecting operation uses purpose more easily.
For achieving the above object and the development photoelectric deflection fast detector be a kind of employing laser technology, digital imaging technology, computer technology, electronic technology, precision machinery technology is in the detecting instrument of one, it detects beam along long to the hollow short flexure that is connected successively by more piece, be installed in the line laser matrix lamp light supply apparatus that the short flexure of first joint detects the adjustable high and low position of beam front end, be installed in the device of collimation laser backward that the short flexure of first joint detects the beam upper rear end, be installed in the device of collimation laser forward that the short flexure of minor details detects the photoelectric receiving transducer of the band automatic data logging device behind the beam and be installed in this photoelectric receiving transducer top and form, the light beam that is sent by line laser matrix lamp light supply apparatus is incident upon photoelectric receiving transducer by each hollow detection beam transmission.In the practical structures, can detect beam by cover is inserted connection successively, bolt connects or hinge dress ways of connecting makes it to become the long straight flexure detection beam of telescopic, sectionally assembled or folding sectional type by each being saved short flexure.
When the present invention is used for testing, each is saved short flexure detection beam stretching, extension straight back connection tightens up, constitute the long straight flexure of the integral body that is about 3600mm and detect the beam detection system, mention after flexure detects the beam laser detecting apparatus by handgrip integral body, the line laser matrix lamp light supply apparatus (probe part) that flexure is detected the beam front end stretches into the middle gap (the gauge head point is stretched carry before the contact point on wheel and road surface) of two wheels that is placed on load car one rear flank wheel, putting down flexure then, to detect the beam laser detection be instrument, and the control knob by the control panel operation then any flexure testing process of road pavement begins; In the testing process, start the load vehicle to overtake, the detection laser beam of being sent by line laser matrix lamp light supply apparatus is imaged on the photoelectric receiving device through the optical imaging system in the photoelectric receiving transducer during this time, when vehicle surpass to overtake 3600mm rice far away after, close the data acquisition button, then the flexure to this point detects end, can obtain the flexure detected value of this point by data processing.
Compared with prior art, the long Beckman beam of the 5400mm that the present invention will use in the past is reduced to the long straight flexure of 3600mm and detects beam, and can make operating personnel like this is 1 people operation by the 4 people saving in past, so operation format is convenient and strength-saving; Flexure data of the present invention are automatic record, intelligent degree height, but whole flexures of each measuring point of continuous recording change numerical value, and helpful for the flexure numerical value of analyzing each measuring point; The present invention has adopted high-precision photoelectric displacement sensor to detect flexure numerical value, and its resolution reaches micron order, has significantly improved the accuracy of detection of flexure; Detection speed of the present invention is fast, and the precision height is not subjected to the influence of extraneous factor, has improved the flexure detection efficiency, and is little, safe for the traffic interference that detects the scene, is particularly suitable for the flexure investigation to the large tracts of land road surface.
Description of drawings
Fig. 1 is one embodiment of the present of invention---the structural representation of telescopic photoelectric deflection fast detector.
Fig. 2 is bowing to view of Fig. 1.
Fig. 3 is the zoomed-in view of initial and tail sections work structuring embodiment illustrated in fig. 1.
Fig. 4 is an another embodiment of the present invention---bowing of sectionally assembled photoelectric deflection fast detector to view.
Fig. 5 is the 3rd embodiment that the present invention provides---bowing of folding sectional type photoelectric deflection fast detector to view.
Fig. 6 is the structural representation of detector center line laser array illuminating light source device.
Fig. 7 is the structural representation of photoelectric receiving transducer in the detector.
Fig. 8 is bowing to view of Fig. 7.
Each label title is respectively shown in the figure: 1-aims at and checks rotor plate, 2-reflective membrane, 3-rotating shaft; the 4-protective cover, 5; 6-magnet steel group A, 7; 8-magnet steel group B; the 9-hold-down nut, 10-rigidity adjustable diameter and screw adjusting fulcrum, 11-slit plate; the 12-linear laser source, the 13-flexure detects beam, and 14-is the collimation laser device backward; the 15-guard shield, 16-binding bolt, 17-handle; the 18-lens cap, 19-rotating shaft, 20-photoelectric receiving device; 21-photoelectric receiving device driving circuit, 22-shell, 23-data acquisition control box; the 24-maintenance-free battery, the 25-rotating shaft connects base plate before the 26-; connect base plate before and after the 27-and relatively rotate limited block, connect base plate behind the 28-, 29-tightens up nut; 30-adjusting screw(rod), 31-be the collimation laser device forward, the 32-guard shield; the 33-reflective membrane; 34; 35; the 36-optical imaging system, I-line laser matrix lamp light supply apparatus, II-photoelectric receiving transducer.
Embodiment
Below with reference to accompanying drawing content of the present invention is described further, but actual fabrication structure of the present invention is not limited in following embodiment.
Referring to accompanying drawing, photoelectric deflection fast detector of the present invention comprises that mainly the straight flexure of combined long detects beam and is separately positioned on line laser matrix lamp light supply apparatus I and photoelectric receiving transducer II three parts that long straight flexure detects beam head and the tail two ends.Flexure detects beam and is connected to form successively by the hollow short flexure detection beam 13 of more piece, its connect to form mode can be as depicted in figs. 1 and 2 by the short flexure of each joint detect 13 on beam successively suit constitute the straight flexure of telescopic long and detect beam, or detecting 13 on beam by the short flexure of each joint and connect and compose the straight flexure of sectionally assembled length successively by binding bolt 16 and detect beam as shown in Figure 4, also can be as shown in Figure 5 detect 13 on beam by the short flexure of each joint and connect and compose the long straight flexure of folding sectional type successively by rotating shaft 19 and binding bolt 16 and detect beam (this folding sectional type beam folds by rotating shaft about 10, stretching the back during work tightens up with bolt 16), on the minor details beam section of long straight flexure detection beam, the handle 17 that is used to mention detection system is housed.Line laser matrix lamp light supply apparatus is installed in the front end that the short flexure of first joint detects beam 13, its structure as shown in Figure 6, it has one and is contained in the short flexure of first joint by rotating shaft 3 hinge and detects before the beam 13 aligning of upper end and check rotor plate 1, being located at the short flexure of first joint for one detects the luminescent source array that is made of linear laser source 12 and slit plate 11 of beam 13 front ends and one and is located at the rigidity adjustable diameter and screw adjusting fulcrum 10 that the short flexure of first joint detects beam 13 preceding lower ends, check rotor plate 1 top at aligning and be pasted with reflective membrane 2, corresponding being provided with is used to make aligning to check the A that rotor plate 1 is fixed at working position on aligning check rotor plate 1 and head joint weak point flexure detection beam facing surfaces, two groups of adhesive magnet steel 5 of B, 6 and 7,8.Luminescent source array adopts the slit of high brightness laser diode irradiator correspondence, produces many slits and is imaged on the photoelectric receiving device 20 of photoelectric receiving transducer II through optical imaging system.The high and low position of linear laser source 12 is adjustable, and it is that the pavement deflection value can be obtained by its picture point amount of movement on photoelectric receiving device 20 with the amount of moving up and down of fulcrum 10.Photoelectric receiving transducer II is installed in the short flexure of minor details and detects in the shell 22 of beam 13 rear ends, its structure such as Fig. 7, shown in Figure 8, it contains many group enlargement factors and satisfies the optical imaging system that accuracy of detection requires and adopt the photoelectric receiving device (CCD or CMOS chip) 20 of driving circuit 21 Control work to form for 34,35,36 and one groups, and the light beam that is sent by line laser matrix lamp light supply apparatus I directly detects beam by hollow length earlier and transmits behind each optical imaging system 34,35,36 successively and be incident upon on the photoelectric receiving device 20.Driving circuit, treatment circuit and the non-maintaining power supply of direct current etc. also are housed in the photoelectric receiving transducer shell.The structure that forward and backward connection base plate 26,28 that is provided with between short flexure detection beam of minor details and photoelectric receiving transducer II and front and back connection base plate relatively rotate limited block 27 can be used for protecting flexure to detect beam, limits the amount of spin up and down that flexure detects beam.Be equipped with on photoelectric receiving transducer shell 22 tops and be used to check that flexure detects the forward direction collimation laser device 31 whether beam is out of shape, when distortion is excessive, laser line generator can't be imaged onto on the photoelectric receiving device 20, at this moment just must carry out alignment.Save short flexure detection beam upper rear end at head the device of collimation laser backward 20 that is used to check flexure detection beam front end fulcrum height situation is installed, the line laser power supply also all can't be imaged onto on the photoelectric receiving device 20 when fulcrum is too high or too low, also should regulate the position of mobile fulcrum this moment.
Claims (7)
1. photoelectric deflection fast detector, it is characterized in that detecting beam (13) along long to the hollow short flexure that is connected successively by more piece, be installed in the line laser matrix lamp light supply apparatus (I) that the short flexure of first joint detects the adjustable high and low position of beam front end, be installed in the device of collimation laser backward (14) that the short flexure of first joint detects the beam upper rear end, be installed in the device of collimation laser forward (31) that the short flexure of minor details detects the photoelectric receiving transducer (II) of the band automatic data logging device behind the beam and be installed in photoelectric receiving transducer (II) top and form, the light beam that is sent by line laser matrix lamp light supply apparatus (I) is incident upon photoelectric receiving transducer (II) by each hollow detection beam transmission.
2. photoelectric deflection fast detector according to claim 1, it is characterized in that line laser matrix lamp light supply apparatus (I) has one and is contained in the short flexure of first joint by rotating shaft (3) hinge and detects the aligning of upper end before the beam and check rotor plate (1), one and be located at the short flexure of first joint and detect the luminescent source array that is made of linear laser source (12) and slit plate (11) of beam front end and one and be located at the rigidity adjustable diameter and screw adjusting fulcrum (10) that the short flexure of first joint detects the preceding lower end of beam, be pasted with reflective membrane (2) aiming at check rotor plate (1) top.
3. photoelectric deflection fast detector according to claim 2 is characterized in that correspondence is provided with two groups of adhesive magnet steel (5～6,7～8) on aligning check rotor plate (1) and the short flexure detection of first joint beam facing surfaces.
4. photoelectric deflection fast detector according to claim 1, it is characterized in that photoelectric receiving transducer (II) adopts the photoelectric receiving device (20) of driving circuit (21) Control work to form by many groups optical imaging system (34,35,36) and one group, the light beam that is sent by line laser matrix lamp light supply apparatus (I) transmits through each optical imaging system (34,35,36) successively and is incident upon on the photoelectric receiving device (20).
5. photoelectric deflection fast detector according to claim 1 is characterized in that the short flexure of each joint detects between beam (13) successively suit and constitutes the straight flexure of telescopic long and detect beam.
6. photoelectric deflection fast detector according to claim 1 is characterized in that connecting and composing the straight flexure of sectionally assembled length successively by binding bolt (16) between each short flexure detection beam of joint (13) detects beam.
7. photoelectric deflection fast detector according to claim 1 is characterized in that connecting and composing the long straight flexure of folding sectional type successively by rotating shaft (16) and binding bolt (19) between each short flexure detection beam of joint (13) detects beam.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100220477A CN101545240B (en) | 2009-04-16 | 2009-04-16 | Photoelectric deflection fast detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100220477A CN101545240B (en) | 2009-04-16 | 2009-04-16 | Photoelectric deflection fast detector |
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| Publication Number | Publication Date |
|---|---|
| CN101545240A CN101545240A (en) | 2009-09-30 |
| CN101545240B true CN101545240B (en) | 2010-10-27 |
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| CN2009100220477A Expired - Fee Related CN101545240B (en) | 2009-04-16 | 2009-04-16 | Photoelectric deflection fast detector |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105133471B (en) * | 2015-05-15 | 2017-04-26 | 南京航空航天大学 | Linear structured light pavement surface detection system-based pavement depth image production method |
| CN105648883A (en) * | 2016-02-04 | 2016-06-08 | 江苏恒达工程检测有限公司 | Automatic deflection detecting device based on pavement |
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Granted publication date: 20101027 Termination date: 20120416 |