CN2546848Y - Road surface micro-deforming measuring device - Google Patents
Road surface micro-deforming measuring device Download PDFInfo
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- CN2546848Y CN2546848Y CN 02224949 CN02224949U CN2546848Y CN 2546848 Y CN2546848 Y CN 2546848Y CN 02224949 CN02224949 CN 02224949 CN 02224949 U CN02224949 U CN 02224949U CN 2546848 Y CN2546848 Y CN 2546848Y
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- photoelectric sensor
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Abstract
The utility model relates to a micro deformable measuring device for road surface, which comprises a laser source, a photoelectric sensor, a data processing circuit and a display device, wherein a parallel laser-spot emitting source which is composed of a concave mirror and a light shielding plate having small holes is arranged at the light path between the laser source and the photoelectric sensor, the photoelectric sensor is connected with a miscellaneous light compensator, the output end of the photoelectric sensor is connected with the data processing circuit and the display device. The utility model can detect horizontal concave-convex depth, deformation curve and vertical flatness on the surface of all roads and vertical deformation and deformation curve of road surface. The utility model has multi-functions. The utility model adopts photoelectric cell as the photoelectric sensor with sensitive reaction. The utility model can ensure precision measurement when any conditional road surfaces are measured. In addition the utility model has the advantages of simple structure, small volume, light weight, and high precision.
Description
Technical field
The utility model relates to the highway pavement micro-deformation measuring device.
Background technology
Highway pavement is owing to construction, design, material cause and operating period loaded vehicle, and the influence of the car that particularly overloads produces and is deformed into unavoidably.From practice, the distortion of highway pavement has following several types mostly: the first, and undaform or concave-convex type distortion.This distortion generally longitudinally changes, and is the most common in all distortion of highway pavement.These distortion seriously descend surface evenness, the comfortableness of driving and deterioration of safety.The second, the rut type.This distortion owing to carry out canalized traffic, rutting deformation occurs along the horizontal change on road surface easily on high-grade highway.It descends horizontal planarization, the difficulty of giving another the right of way, and driving is dangerous to be increased.The 3rd, the depression type.This distortion is caused by the compactness and the undercapacity of subgrade and pavement mostly, and pavement depression forms and jumps car, and road-ability and security are reduced.The alleged little distortion of the utility model is with respect to the hollow place groove, and above-mentioned distortion has the feature than small deformation, so be called little distortion.In order to understand the distortion situation of highway pavement, and control its development, and the plan of repairing is proposed in large deformation, just need regular distortion to detect to highway pavement, undoubtedly, this detection is in time taked the repairing measure for grasping the surface deformation situation, reduce the maintenance cost, guarantee that the operate as normal of highway pavement is significant.Detection method in " standard ", generally comparatively backward, testing the speed of having is slow, and personal safety can not get guaranteeing that the precision that has is not high during the measurement that has, affects the correct evaluation to the highway pavement distortion more or less.Introduce overseas equipment, cost an arm and a leg (being about 300,000 dollars) as a table flatness instrument, and maintenance difficult.For this reason, the domestic highroad surface deformation checkout equipment of developing voluntarily just has important practical sense.
Summary of the invention
The purpose of this utility model provides a kind of simple in structure, the highway pavement micro-deformation measuring device that precision is higher.
Technical solution of the present utility model is: a kind of highway pavement micro-deformation measuring device, comprise lasing light emitter, photoelectric sensor and data processing circuit and display device, described lasing light emitter is provided with the parallel hot spot emissive source of being made up of lens and the shadow shield which is provided with aperture with light path between the photoelectric sensor, photoelectric sensor is connected with the veiling glare compensator, and the photoelectric sensor output terminal connects data processing circuit and display device.Described photoelectric sensor comprises photoelectric cell sheet or CCD sheet or position transducer, fixed head and base, fixed head and base are fixed, fixed head is provided with photoelectric cell sheet or CCD sheet or position transducer, and the fixed head center is provided with the hinged portable plate of vertical rotation axle, and the portable plate bottom is provided with counterbalance weight.
Aperture on the described shadow shield is semicircle or rectangle.
The utility model can detect the horizontal concavo-convex degree of depth, the deformation curve of all highway pavements and vertically flatness and road surface are vertical to distortion and distortion pelvic curvature line thereof etc., has multi-functional effectiveness.The utility model adopts photoelectric cell as sensor, is quick on the draw, and the little deflection in road surface is by the area change reaction of rayed on photoelectric cell, and photoelectric cell is converted into the curtage variable quantity with the illuminating area variation.When the utility model can realize that any pavement behavior is measured, guarantee measuring accuracy.The utility model is simple in structure, and volume is little, and is in light weight, the precision height.
Description of drawings
Fig. 1 is the utility model structural principle synoptic diagram.
Fig. 2 is the photosensor structure synoptic diagram.
Fig. 3 changes synoptic diagram for angular deformation measuring principle angle.
Fig. 4 is an angular deformation measuring principle synoptic diagram.
Fig. 5 is a vertical deformation measuring principle synoptic diagram.
Embodiment
A kind of highway pavement micro-deformation measuring device comprises lasing light emitter 1, photoelectric sensor 4 and data processing circuit and display device 5, and described lasing light emitter 1 adopts the plane generating laser, and generating laser emission diameter is a 1mm left and right sides luminous point.Lasing light emitter 1 is connected with mu balanced circuit 6.Described lasing light emitter 1 is provided with the parallel hot spot emissive source of being made up of concavees lens 2 and the shadow shield 3 which is provided with aperture with light path between the photoelectric sensor 4, and concavees lens 2 diffusion multiples are 1～50 times, and diffusion length is 1cm～600cm.With low multiple, use high multiple during distance measuring when low coverage is measured, its effect makes a light complanation light.Aperture has two kinds of semicircle or rectangles on the shadow shield 3.Diameter 2cm when semicircle, 2cm * 1.5cm during rectangle.Shadow shield 3 can move in concavees lens 2 back, and displacement is 1cm～5cm.The photoelectric sensor 4 general photoelectric cell sheets 41 that adopt, also available CCD sheet or position transducer, this photoelectric cell sheet 41 is subjected to producing curtage after the illumination.Described photoelectric sensor 4 structures comprise photoelectric cell sheet or CCD sheet or position transducer 41, base 46 and fixed head 43 as shown in Figure 2, and photoelectric cell sheet 41 is semicircle or square, and about short-circuit current 100mA, open-circuit voltage is about 600mV.Fixed head 43 fixed light batteries 41 usefulness, it is connected with the mensuration car by base 46, and fixed head 43 areas are 2.5cm * 3cm, about thick 1.5cm.Fixed head 43 is provided with vertical rotation axle 42,1 millimeter of rotation axis 42 diameter of axle, long 1 centimetre of jag.Portable plate 44 is hinged by rotation axis 42 with fixed head 43, and portable plate 44 moving axis 42 that can rotate rotates, and fixed head 43 is done relative motion with portable plate 44, can produce angle.Portable plate 44 areas are 2.5cm * 2.5cm, and portable plate 44 bottoms are provided with counterbalance weight 45.Counterbalance weight 45 is mainly damping usefulness, can move up and down, and up-down adjustment can reach best anti seismic efficiency, and counterbalance weight 45 is a square, and there is screw hole at the center, and diameter is φ 3.Base 46 is a packaged type, is fixed on during close-in measurement and does certainly on dolly or the automobile, places on the road surface during telemeasurement.Photoelectric sensor 4 is connected with veiling glare compensator 7, and described veiling glare compensator 7 adopts light filters or two identical photoelectric cell sheet reversal connections or Wheatstone bridge to adjust circuit.Photoelectric sensor 4 output terminals connect data processing circuit and display device 5.
The utility model measuring principle is as follows:
1, the concavo-convex degree of depth (in length and breadth to) is measured
Concavo-convex depth survey realizes by the measured angular distortion.Referring to Fig. 1 and Fig. 2, lasing light emitter 1 sends directional light through concavees lens 2 and shadow shield 3, and the aperture on the shadow shield 3 is semicircle, it is semicircle that illumination this moment becomes, this light is mapped on the photoelectric sensor 4, and after disturbing by veiling glare compensator 7 eliminating veiling glares, remaining promptly is that using light shines.Because the utility model is installed onboard, when garage is walked, run into distortion such as the concavo-convex or recessing of highway pavement, portable plate 44 is under gravity and counterbalance weight 45 effects immediately, the moving axis 42 that rotates rotates, portable plate 44 keeps horizontal level, and photoelectric cell sheet 41 is along with dolly tilts along the road surface, and photoelectric cell sheet 41 produces angle θ with portable plate 44
i, cause that the quantity of illumination changes, situation of change as shown in Figure 3: in Fig. 3, (a) be original position, (b) angle makes progress, and (c) angle is downward.Find out by Fig. 3, originally
The quantity of illumination of face becomes
The quantity of illumination of face is few
The face quantity of illumination, and this quantity of illumination is out of shape θ just because of cone of coverage
iThe result.This angle θ
iCorresponding is the photoelectric cell area that reduces, and according to the photoelectric cell characteristic, area is directly proportional with electric weight (curtage), and therefore, this angle also is directly proportional with electric weight, shown in the expression formula (1):
∴
In the formula:
Be illuminating area or the optical quantum area that reduces.
θ
iBe the light-receiving area angle that changes, expenditure is represented.This angle is the lighting angle that the caused corresponding angles of surface deformation change.
k
iBe proportionality constant, need to determine by demarcating.
θ
iThe relation of angle variation and road surface deformation of unevenness amount is by shown in Figure 4.
Make the AO extended line and meet at former road surface in the H point, obviously, ∠ AOC=∠ AHG, and ∠ AHG=∠ GEF, therefore, ∠ GEF=∠ AOC=θ
i,, equal ∠ GEF=θ again by (1) formula
i=k
iQ
i, for this reason, can be by θ
iObtain the deformation of unevenness degree of depth, represent with following formula (2):
Among the ∵ rt △ EFG, FG/EF=sin ∠ GEF=sin θ
i
∴ distortion FG=EFsin θ
i=EFsin k
iQ
i(2) or in: FG is surface deformation amount (perpendicular to the road surface, claiming the absolute altitude deflection again);
EF is car wheel base (10cm～300cm);
Q
iDetect k by photoelectric cell
iTry to achieve by demarcation.
If car in advancing, is selected suitable sampled point, then can obtain numerous angular deformation θ
iValue also can obtain numerous concavo-convex absolute altitude FG, and the input Computer Processing obtains concavo-convex depth value in road surface and flatness meansquaredeviation at last, and can get international indicator IRI and jolt accumulated value by converting.
2, vertical deformation is measured
Aperture adopts rectangle on the shadow shield 3, illumination this moment rectangularity.Entire measuring device is moved down from car, and photoelectric sensor 4 is placed the stress point apart from lasing light emitter 6m place, at this moment, photoelectric sensor moves up and down, angular deformation θ
iBe zero, as shown in Figure 5:
By Fig. 5 (a), the initial quantity of illumination is the AC face, and after external force was removed, road surface resilience immediately returned to Fig. 5 (b) state, and at this moment, plane of illumination has become AC ', thereby the vertical deformation amount should be tried to achieve by following formula (3):
a＝AC′-AC (3)
In the formula: a is the illumination recruitment, the corresponding actual resilience amount that is after the unloading of road surface.
AC ' is road surface, unloading back resilience amount.
AC is the initial quantity of illumination.
Become the actual resilience geometric sense in road surface by illumination recruitment a and try to achieve, and represent by formula (4) by demarcation:
L＝κ
2·a (4)
In the formula: the actual resilience amount when L is the highway pavement unloading, mm
A is the photoelectricity recruitment, mV or mA
κ
2Be conversion coefficient, try to achieve, mm/mV or mm/mA by demarcation.
Claims (2)
1, a kind of highway pavement micro-deformation measuring device, comprise lasing light emitter (1), photoelectric sensor (4), data processing circuit and display device (5), lasing light emitter (1) is provided with the parallel hot spot emissive source of being made up of lens (2) and the shadow shield which is provided with aperture (3) with light path between the photoelectric sensor (4), photoelectric sensor (4) is connected with veiling glare compensator (7), photoelectric sensor (4) output terminal connects data processing circuit and display device (5), it is characterized in that: described photoelectric sensor (4) comprises photoelectric cell sheet or CCD sheet or position transducer (41), fixed head (43) and base (46), fixed head (43) is fixing with base (46), fixed head (43) is provided with photoelectric cell sheet or CCD sheet or position transducer (41), fixed head (43) center is provided with the hinged portable plate of vertical rotation axle (42) (44), and portable plate (44) bottom is provided with counterbalance weight (45).
2, highway pavement micro-deformation measuring device as claimed in claim 1 is characterized in that: the aperture on the described shadow shield (3) is semicircle or rectangle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02224949 CN2546848Y (en) | 2002-05-24 | 2002-05-24 | Road surface micro-deforming measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02224949 CN2546848Y (en) | 2002-05-24 | 2002-05-24 | Road surface micro-deforming measuring device |
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| Publication Number | Publication Date |
|---|---|
| CN2546848Y true CN2546848Y (en) | 2003-04-23 |
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ID=33702263
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02224949 Expired - Fee Related CN2546848Y (en) | 2002-05-24 | 2002-05-24 | Road surface micro-deforming measuring device |
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| CN (1) | CN2546848Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111364334A (en) * | 2019-12-19 | 2020-07-03 | 长沙理工大学 | Pavement neatness detection device for paving construction |
-
2002
- 2002-05-24 CN CN 02224949 patent/CN2546848Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111364334A (en) * | 2019-12-19 | 2020-07-03 | 长沙理工大学 | Pavement neatness detection device for paving construction |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20030423 Termination date: 20100524 |