Device and method for measuring urban rail wheel parameters based on laser displacement sensor

Abstract

The invention discloses a device and a method for measuring urban rail wheel parameters based on a laser displacement sensor. The device comprises a wheel flange and tread measurement module, an ARM embedded main control module, an interaction module, a data storage module, a USB communication module and a power supply module. The wheel flange and tread measurement module detects the coordinate of a wheel tread by means of a laser displacement sensor. The ARM embedded main control module conducts the curve-fitting treatment on the detected coordinate of the wheel tread so as to obtain the profile curve of a wheel. After that, the ARM embedded main control module figures out the height of a wheel flange, the thickness of the wheel flange, the diameter of the wheel and other wheel parameters based on the geometrical relationship thereof. The interaction module displays the profile curve of the wheel and wheel parameters. The data storage module stores measurement data and wheel parameters. A host computer acquires wheel parameters to further analyze the wheel parameters through the USB communication module. The power supply module powers up the entire device. According to the technical scheme of the invention, the device can measuring urban rail wheel parameters in the wheel non-dropping condition, thus having the advantages of convenience, high speed, high accuracy, simplicity and practicability.

Description

technical field [0001] The invention relates to the technical field of railway vehicle detection, in particular to an urban rail wheel parameter measurement device based on a laser displacement sensor. Background technique [0002] As an extremely important part of the running part of the vehicle, the wheel set not only bears the entire weight of the vehicle body, but also is responsible for transmitting the force between the wheel set and the rail. The wheel set needs to withstand large static load and dynamic load, assembly stress, thermal stress generated by brake shoes and brake pads during braking, and centrifugal force when passing through the curve, etc. Therefore, whether the wheelset maintains a good technical condition is related to the absolute safety of driving. In view of the importance of the wheel set to the safe operation of the train, accurately measure the parameters such as the thickness of the wheel rim, the height of the rim, the vertical wear, the wear...

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Problems solved by technology

Chinese patent CN103738358 (portable railway wheel tread parameter detector, application number 201310731824.1, application date: 2013-12-26) discloses a wheel tread parameter detection device, which can measure the wheel rim height, rim thickness and other tread parameters detection, but the device cannot detect the diameter of the wheel, and cannot realize the integration of wheel parameter measurement

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