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Automotive blower assembly noise test system and method thereof

A technology for noise testing and blower, which is used in measuring devices, measuring ultrasonic/sonic/infrasonic waves, instruments, etc., and can solve the problems of lack of scientificity, single evaluation parameters, inability to guarantee repeatability, objectivity and accuracy, etc.

Inactive Publication Date: 2015-12-09
CHERY AUTOMOBILE CO LTD
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  • Abstract
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Problems solved by technology

[0002] At present, automobile manufacturers and blower manufacturers in the industry do not have special test methods to measure the noise of automotive blowers / blower motors. Most of them simply test the total noise value or use the subjective evaluation method of the human ear to test the Roughly check the noise, the evaluation parameter is single, lacks scientificity, and cannot guarantee repeatability, objectivity and accuracy

Method used

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  • Automotive blower assembly noise test system and method thereof
  • Automotive blower assembly noise test system and method thereof
  • Automotive blower assembly noise test system and method thereof

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Embodiment Construction

[0030] The present invention is a method for testing the noise of the blower / blower motor assembly 5 used in automobiles, in which the boundary conditions for sample installation, the location and quantity of measuring points, the test working conditions and the realization of the test working conditions, and the test hardware configuration are stipulated. , Collection, processing and analysis of test data.

[0031] System structure such as figure 1 As shown, above the position to be tested, there is an elastic rope for suspending the object to be tested, and a bracket for fixing the elastic rope. The elastic rope is suspended to ensure that the object under test will not shake due to its own rotation excitation after being restrained.

[0032] A free-field microphone 2 is arranged near the position to be measured, and the free-field microphone 2 is used to collect sound information. The information is sent to the data acquisition and analyzer 1, which is the equipment for pr...

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Abstract

The invention discloses an automotive blower assembly noise test system. An elastic rope which is used for suspending an object to be tested and a bracket which is used for fixing the elastic rope are arranged above a position to be tested. A free-field microphone is arranged near the position to be tested. The free-field microphone outputs an acquired signal to a data acquisition and analyzing device. The data acquisition and analyzing device is connected with the object to be tested through a photoelectric tachometer. The object to be tested and the data acquisition and analyzing device are powered by a direct current voltage stabilizing power supply. The object to be tested is a blower assembly and / or blower motor assembly. According to the test system and a method, which are provided by the invention, under actual work conditions, sound pressure characteristics, time domain, frequency domain and auto-power spectrum characteristics of a specified test point of a blower / blower motor can be acquired; and the noise performance of the blower / blower motor assembly can be scientifically, repeatedly, objectively and comprehensively evaluated.

Description

technical field [0001] The invention relates to the field of auto parts detection, and mainly relates to a system and a method for the noise of an automotive blower / blower motor. Background technique [0002] At present, automobile manufacturers and blower manufacturers in the industry do not have special test methods to measure the noise of automotive blowers / blower motors. Most of them simply test the total noise value or use the subjective evaluation method of the human ear to test the Roughly check the noise, the evaluation parameter is single, lacks scientificity, and cannot guarantee repeatability, objectivity and accuracy. Contents of the invention [0003] The technical problem to be solved by the present invention is to realize a system and method for comprehensively evaluating the noise performance of the blower / blower motor assembly that can guarantee scientificity, repeatability and objectivity. [0004] In order to achieve the above object, the technical solu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01H17/00
Inventor 姜娟丁润江张徐飞万心东杨晋
Owner CHERY AUTOMOBILE CO LTD
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