Carriage performance detection method and detection system based on laser measuring displacement

Abstract

The invention relates to a carriage performance detection method and a carriage performance detection system based on laser measuring displacement. According to the method, the distances among a laserdisplacement sensor and carriage walls are automatically detected by the aid of the laser displacement sensor, detection accuracy is ensured, the laser displacement sensor is placed on a supporting component outside a carriage, so that the laser displacement sensor is supported and fixed, the position of the laser displacement sensor cannot be affected by deformation of the carriage walls, the reference position of a reference substance is not changed in the whole test process, errors caused by change of the reference position are removed, a plurality of detection points are selected from thecarriage walls, remaining deformation of the carriage is measured by the laser displacement sensor, a difference value between two measurement data before and after carriage deformation of the same laser displacement sensor is remaining deformation of a corresponding position measured by the laser displacement sensor, a maximum value measured by the laser displacement sensor is the remaining deformation of the carriage, and the data acquisition requirements for surface deformation of various van type truck carriages are met.

Description

technical field [0001] The invention relates to a vehicle compartment performance detection method and a detection system, belonging to the technical field of vehicle detection. Background technique [0002] At present, according to the requirements of GB17953-2013, JT / T389-2010 and other standards, the air bag test method is generally used for the strength and mechanical performance tests of hard compartments, insulated compartments, refrigerated compartments, and side curtain compartments. On the surface to be measured inside the body, the wall surface of the car body is deformed by inflating and pressurizing the air bag, and the residual deformation of the outer surface of the car body is evaluated. However, due to the large-scale and irregular deformation of the outer surface of the compressed car body, the measurement of the residual deformation of the outer surface of the car body has always been a difficult problem in the detection process. The traditional measuremen...

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art, and propose a car performance detection method and detection system based on laser displacement measurement, using a laser displacement sensor to measure the residual deformation of the car, solving the traditional measurement method when measuring the strength of the car body There are many disadvantages, which greatly improve the test measurement accuracy

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