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Road gradient measuring method and system

A measurement method and technology of road slope, applied in the directions of measuring device, slope measurement, surveying and navigation, etc., can solve the problem of large measurement error of road slope, achieve the effect of improving accuracy, fast measurement speed, and eliminating measurement error

Active Publication Date: 2020-04-24
ROADMAINT CO LTD +1
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Problems solved by technology

[0003] Embodiments of the present invention provide a method and system for measuring road slopes to solve the problem of relatively large measurement errors in road slopes in the prior art

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  • Road gradient measuring method and system

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Embodiment Construction

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0028] A preferred embodiment of the present invention discloses a method for measuring road slope. The measurement method uses a test vehicle. The inspection vehicle is equipped with an inertial measuring instrument, a first rangefinder group and a second rangefinder group. Wherein, the first range finder group includes at least two first range finders arranged at even intervals along the width direction of the inspection vehicle. The second rangefi...

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Abstract

The invention discloses a road gradient measuring method and a road gradient measuring system. The road gradient measuring method comprises the steps of: acquiring calibration values of a roll angle and a pitch angle of a detection vehicle measured by means of an inertia measurement instrument; acquiring a first roll angle and a first pitch angle of the detection vehicle at each measurement point,acquiring a group of first measurement values of each measurement point measured by means of a first range finder group, and acquiring a group of second measurement values of each measurement point measured by means of a second range finder group; calculating to obtain a transverse included angle between the detection vehicle at each measurement point and the road surface of a road; calculating to obtain a longitudinal included angle between the detection vehicle at each measurement point and the road surface of the road; correcting the first roll angle of each measuring point to obtain a second roll angle of each measuring point; correcting the first pitch angle of each measurement point to obtain a second pitch angle of each measurement point; and calculating a tangent value of the second roll angle and the tangent value of the second pitch angle of each measurement point, so as to obtain a cross slope gradient and a longitudinal slope gradient of the road at each measurement point.The road gradient measuring method and the road gradient measuring system are high in precision.

Description

technical field [0001] The invention relates to the technical field of road measurement, in particular to a method and system for measuring road slope. Background technique [0002] Most of the existing rapid road slope measurement equipment uses the inertial measurement unit (IMU) installed on the bottom surface of the vehicle body to measure the roll angle and pitch angle of the mounting surface during vehicle driving, and directly uses the roll angle to calculate the road slope. The pitch angle is used to calculate the longitudinal slope of the road. This measurement principle ignores the inclination of the IMU installation surface (vehicle floor) due to uneven roads or driving behaviors such as turning and braking when the vehicle is moving, that is, it forms an angle with the road surface, resulting in slope measurement errors. Contents of the invention [0003] Embodiments of the present invention provide a method and system for measuring road slopes, so as to solve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C9/00
CPCG01C9/00
Inventor 常成利杨亚鹏武玉钊车霄宇
Owner ROADMAINT CO LTD
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