Portable vehicle-mounted site test device for road and tyre noise

Abstract

The invention discloses a portable vehicle-mounted site test device for road and tyre noise. The device is used to measure noise between tyres of running vehicles and a road. The device comprises a sound sensor receiving noise, and also comprises a measuring support and a vehicle body connecting device. The measuring support and the vehicle body connecting device are connected integrally. The sound sensor is installed on the measuring support. The vehicle body connecting device is detachably connected with the vehicle body of a vehicle, so that the sound sensor is fixed relative to a preset position of the vehicle in noise measurement. The measuring support is simple in structure, such as an independent stand rod with a simple auxiliary structure, or the in a slightly complex type, for example, a truss type, however, the measuring support is essentially in a simple structure, and volume thereof can be reduced as needed. Finally, the measuring support is realized to be attached on a vehicle and run together with the vehicle, so as to complete measurement in a normal running process of the vehicle. The device is not interfered by road conditions, operation range values and other external factors, and realizes portable measurement.

Description

technical field [0001] The invention relates to the technical field of tire noise testing, in particular to a portable vehicle-mounted road tire noise on-site testing device, which can be used for on-site testing of noise near road surfaces and tires. Background technique [0002] In recent years, with the rapid development of public transportation, the environmental pollution of traffic noise has become increasingly serious, especially when the speed of the car exceeds 50km / h, the noise of tires and tires has become the main noise source, seriously endangering drivers and passengers and the road. Healthy life of surrounding residents. At this stage, those skilled in the art are studying how to scientifically measure and evaluate road-tire noise, in order to finally achieve the goal of effectively controlling the noise. An existing common measurement method is called "on-site close-range test method". [0003] The so-called on-site close-range test method is to install a m...

AI Technical Summary

Problems solved by technology

[0004] Although this method can accurately reflect the real situation of the noise of the road surface and tire parts, this method of using trailer assistance has the following disadvantages: First, the operation of the connection between the trailer and the vehicle under test and the arrangement of the trailer itself makes The whole process becomes cumbersome; second, the above-mentioned operations also require a lot of manpower, which increases the cost of noise testing; third, during the above-mentioned operations, especially the arrangement of various devices on the trailer is more easily affected by human factors , and have an inestimable impact on the measurement results

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