Method for measuring vehicle wheelbase and front/rear overhang

Abstract

The invention provides a method for measuring vehicle wheelbase and front / rear overhang. The method comprises the following steps: a pair of photoelectric measurement light curtains, vertical to the ground, are arranged ahead of the vehicle driving direction; laser scanners are arranged under light curtain receiving ends or transmitting ends respectively, and the scanning surface of the laser scanners is parallel to the horizontal plane; a vehicle drives to the photoelectric measurement light curtains along the direction vertical to the photoelectric measurement light curtains; and when the vehicle head triggers the photoelectric measurement light curtains, the laser scanners scan vehicle wheels near two axles closest to the photoelectric measurement light curtains to collect data and calculate wheel base and front overhang value. The method can calculate the front overhang and rear overhang of the vehicle and pin wheel base of a semitrailer; the structure is simple; and measurement result is accurate.

Description

technical field [0001] The invention relates to the field of motor vehicle measurement, in particular to a method for measuring vehicle wheelbase and front and rear suspension. Background technique [0002] The vehicle's wheelbase, front and rear suspension, and pin-wheelbase are the basic parameters for the design of a semi-trailer, and are also parameters required by other control systems. The vehicle's wheelbase and wheelbase dimensions directly affect the vehicle's overall dimensions, total mass, passability, Driving stability and other performance. If the wheelbase is increased, the driving stability of the car will be improved, but if the wheelbase is excessively lengthened, the minimum turning diameter of the car will increase, the maneuverability will decrease, and the stress on the frame will deteriorate. The wheelbase is short, the overall length of the vehicle is short, and the minimum turning diameter and longitudinal passing radius are also small. However, if ...

AI Technical Summary

Problems solved by technology

[0004] Wheelbase and front and rear suspension are important parameters of a semi-trailer, and the means of measurement are relatively complicated now. For example, in CN201417141Y "Automobile, Train Outline, Height Difference, and Front and Rear Suspension Dynamic Detection System", a number of 10-100cm intervals are used. To detect the light signal emission and receiver to measure the wheelbase, because the wheelbase of the trailer has a large span, relatively many transmitters and receivers are required, and the structure and installation are more complicated

At the same time, the current method of measuring the wheelbase cannot measure the pin-wheelbase of the semi-trailer, and there are restrictions on the pin-wheelbase of the semi-trailer in the new GB1589 "Road Vehicle Outline Dimensions, Axle Load and Quality Limits" , it is required that when the vehicle outline is detected, the measured wheelbase should also include the pin-wheelbase of the semi-trailer

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