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Anti-interference method for laser pavement structure depth detection system

A technology of pavement structure depth and detection system, which is applied in the direction of measuring devices, optical devices, instruments, etc., can solve the problems of inappropriate elimination of invalid values, poor anti-interference ability, and influence on calculation results, so as to improve anti-interference ability and measurement Accuracy, improved anti-interference ability, and the effect of stable measurement accuracy

Inactive Publication Date: 2019-09-17
WUHAN BINHU ELECTRONICS
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Problems solved by technology

Due to the influence of road surface structure characteristics and photometric characteristics, the data collected by the laser displacement measurement sensor will inevitably have invalid values ​​such as deviation values ​​and over-range values. , the anti-interference ability is poor, and the measurement accuracy cannot be guaranteed

Method used

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  • Anti-interference method for laser pavement structure depth detection system
  • Anti-interference method for laser pavement structure depth detection system
  • Anti-interference method for laser pavement structure depth detection system

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Embodiment Construction

[0024] Such as figure 1 As shown, the road surface structure depth detection system used in the method of the present invention includes a laser displacement ranging sensor, an NI acquisition card, an encoder, a control board, a computer and a display, and also includes data acquisition software and data analysis and calculation software. The road surface structure depth detection system used in the method of the present invention is vehicle-mounted, and the laser displacement ranging sensor is installed on the vehicle chassis, and the height from the ground is 300mm. The encoder is fixed on the wheel and rotates coaxially with the wheel. The NI acquisition card is installed on the expansion slot of the computer. The interface, control board, computer and display are installed in the vehicle, and personnel can work in the vehicle. The laser displacement ranging sensor is connected to the NI acquisition card through the connecting cable, the encoder is connected to the control ...

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Abstract

The invention belongs to the field of pavement condition detection, and particularly relates to an anti-interference method for a laser pavement structure depth detection system. According to the method, special filtering is carried out on data with the unit length of 300 mm, invalid data values are measured through filtering optimization, and then data after filtering is substituted into a formula for calculating SMTD to calculate structure depth, so that the anti-interference capacity and measurement accuracy of the pavement structure depth detection system are improved through the invalid data values measured through filtering optimization.

Description

technical field [0001] The invention belongs to the field of road condition detection, and particularly relates to a method for improving the anti-interference ability and measurement accuracy of a vehicle-mounted laser ranging road structure depth detection system. Background technique [0002] Pavement structure depth is an important part of road surface condition evaluation, and an important must-test index for road engineering acceptance and maintenance fixed-point inspection. The measurement method and measurement accuracy of pavement structure depth have attracted more and more attention and research from scholars and experts. [0003] The vehicle-mounted non-contact laser pavement structure depth detection method disclosed in domestic testing regulations and related standards uses a high-precision, high-acquisition frequency (16kHz-64kHz) displacement measurement sensor based on the principle of laser triangulation to scan the elevation of the road profile point by po...

Claims

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Application Information

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IPC IPC(8): G01B11/02
CPCG01B11/02
Inventor 梁辉王仲霖郑洁
Owner WUHAN BINHU ELECTRONICS
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