Road detection vehicle distance triggering device and method based on information fusion

Abstract

The invention belongs to the technical field of vehicle detection and discloses a road detection vehicle distance triggering device and method based on information fusion. Longitudinal running speed of a vehicle is estimated in real time through fusing output signals of a GPS (global positioning system) module, a longitudinal acceleration sensor, a vertical acceleration sensor, a gyroscope and a vehicle speed sensor, the longitudinal running speed is then integrated to obtain a vehicle running distance, and whether a road pattern sensor on a detection vehicle is triggered or not is judged according to the running distance; therefore, errors due to changes in rolling radius of tires are avoided; in addition, since the GPS module, the vertical acceleration sensor, the gyroscope and the vehicle speed sensor are standard parts to a traditional road detection vehicle, the device related in the technical scheme of the invention is added with only one longitudinal acceleration sensor to measure longitudinal acceleration of a vehicle, and manufacture cost of the detection vehicle can be reduced.

Description

technical field [0001] The invention relates to the technical field of vehicle detection, in particular to a vehicle distance trigger device and trigger method for road detection based on information fusion. Background technique [0002] With the continuous construction of highways in our country, the application of multi-functional road inspection vehicles is becoming more and more common. At present, multi-function inspection vehicles mainly use high-speed area array cameras and various lasers to measure the longitudinal and cross-sectional curves of the road surface, and then fit the three-dimensional model of the road surface in the host computer, and then calculate the IRI and road surface roughness of the road surface coefficient. [0003] In the traditional monitoring vehicle system, the rotary encoder installed on the vehicle drive is required to provide the vehicle with longitudinal travel distance information. After the system judges that the detection vehicle ha...

AI Technical Summary

Problems solved by technology

However, in order to ensure the ranging accuracy of the rotary encoder, it needs to have high installation accuracy to ensure that the rotary encoder is coaxial with the rotation centerline of the driving wheel, which increases the manufacturing cost of the inspection vehicle; on the other hand, the rotary encoder’s The distance measurement accuracy is easily affected by the state of the tires of the detection vehicle, resulting in changes in the rolling radius of the tires. These factors limit the detection accuracy of the detection vehicle

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