Detection method of road-surface evenness

A detection method and flatness technology, which is applied in the field of road surface flatness detection, can solve problems such as inaccurate detection data and inability to measure, and achieve the effect of improving service life and reducing maintenance costs

Active Publication Date: 2010-02-10
ROADMAINT CO LTD
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Problems solved by technology

[0007] In view of this, the present invention is to provide a road surface smoothness detection method to solve the above-mentioned road surface measurement process. During rapid acceleration, rapid de

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  • Detection method of road-surface evenness
  • Detection method of road-surface evenness

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Embodiment Construction

[0022] In order to clearly illustrate the solutions in the present invention, preferred embodiments are given below and detailed descriptions are given in conjunction with the accompanying drawings.

[0023] see figure 1 , an embodiment of the invention such as figure 1 as shown, figure 1 The laser ranging device is installed on the car body, and the laser ranging device measures the distance from the car body to the road surface. Above the laser ranging device, a positioning device is installed, and a three-way gyroscope and a positioning device are installed in the positioning device. The accelerometer and the three-way gyroscope can measure the inclination angle of the laser ranging device relative to the vertical ground when the laser ranging device moves with the vehicle body during acceleration, deceleration, and turning, such as figure 1 In the angle a, the accelerometer can simultaneously measure the displacement of the laser distance measuring device when the car bo...

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Abstract

The invention discloses a detection method of road-surface evenness; in the measurement process, an accelerometer is utilized to detect relative displacement of a laser ranging device owning to road surface bumping, a three-dimensional gyroscope is utilized to detect the inclined angle of the laser ranging device owning to road surface bumping, and a three-dimensional synthesis attitude angle is synthesized under a two-directional coordinate system according to the attitude angles along the three directions; the relative displacement, the three-dimensional synthesis attitude angle and the distance measured by the laser ranging device are obtained, and vertical distance between the laser ranging device and the road surface is calculated; according to the detection density, all vertical distances are obtained, and a difference value with a standard reference distance is obtained, thereby obtaining a profile curve and the road-surface evenness. The method eliminates the problems that thealtitude of the laser ranging device is inclined owning to road surface bumping and data loses efficiency caused by position deviation, and solves the problem that the road-surface evenness can not bedetected under the low-speed (<25km/h) condition, thereby improving the detection efficiency, reducing the life cycle cost of highroads and improving the service life of the highroads.

Description

technical field [0001] The invention relates to the technical field of road maintenance, in particular to a method for detecting road surface roughness. Background technique [0002] In the early stage of highway maintenance, road surface roughness is one of the important indicators for highway technical condition evaluation and road maintenance analysis. Rapid and accurate detection of smoothness is of great significance to road maintenance management, for example, to improve the service life of roads, Reduce road maintenance costs, etc. [0003] Since the 1970s, western countries have carried out a lot of research work on the rapid detection of road surface roughness, and proposed a series of rapid detection methods and related devices and equipment for road surface roughness, including vehicle-mounted bump accumulators. In order to establish the data relationship between various testing equipment, the World Bank also proposed the International Roughness Index (IRI: inter...

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Application Information

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IPC IPC(8): E01C23/01G01B11/30
Inventor 赵怀志
Owner ROADMAINT CO LTD
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