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Motorcycle noise measurement system and measurement method based on working condition automatic control

A noise measurement and motorcycle technology, which is applied in the direction of measuring devices, vehicle testing, machine/structural component testing, etc., can solve problems that affect the accuracy of noise test results, advance working condition control operations, and inability to accurately judge vehicles, etc. Achieve the effects of avoiding invalid tests, good repeatability, and shortening the noise test time

Pending Publication Date: 2022-01-11
天津内燃机研究所(天津摩托车技术中心)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, manual visual inspection will produce errors. Affected by the visual angle of the driving position, the driver cannot accurately judge the moment when the front end of the vehicle reaches the AA' line, and the moment when the rear end of the vehicle leaves the BB' line. The situation where the working condition control operation is advanced or delayed, thus affecting the accuracy of the noise test results

Method used

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  • Motorcycle noise measurement system and measurement method based on working condition automatic control
  • Motorcycle noise measurement system and measurement method based on working condition automatic control
  • Motorcycle noise measurement system and measurement method based on working condition automatic control

Examples

Experimental program
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Effect test

Embodiment 1

[0056] Motorcycle noise measurement system based on automatic control of working conditions, such as Figure 1-Figure 3 As shown, it includes a vehicle-mounted measurement and control system 1 and a fixed measurement and control system 2 communicatively connected with it. The vehicle-mounted measurement and control system 1 is used for automatic control of motorcycle working conditions, and the fixed measurement and control system 2 is used for motorcycle noise measurement.

[0057] The vehicle measurement and control system 1 includes a vehicle controller 11 , a measurement subsystem 12 , a servo subsystem 13 , an operation display panel 14 , an automatic control switch 15 , a wireless communication module 16 and a vehicle power supply 17 . Among them, the on-board controller 11 is connected to the measurement subsystem 12, the servo subsystem 13, the operation display panel 14, the automatic control switch 15, the wireless communication module 16, and the on-board power suppl...

Embodiment 2

[0075] refer to figure 1 , the difference between this embodiment and Embodiment 1 is that the trigger device also includes a trigger device three 124, and the trigger device three 124 is arranged at the center position (PP' line) of the measurement area, so that the motorcycle arrives at the middle of the noise measurement area Position trigger signal.

[0076] European motorcycle noise regulations include: UN Regulation No.9 "Unified Regulations on the Approval of L2, L4 and L5 Vehicles in Noise", UN Regulation No.41 "Unified Regulations on the Noise Approval of Two-wheeled Motorcycles" and UNRegulation No. 63 "Unified Regulations on the Approval of Two-Wheeled Mopeds Concerning Noise".

[0077] refer to Figure 7 , is a schematic diagram of the European standard noise standard about the driving noise measurement site, measurement area and microphone layout, and the PP' line is the measurement center line passing through O and perpendicular to CC'. Compared with the nati...

Embodiment 3

[0079] refer to Figure 4 and Figure 5 , is the accelerator opening adjustment device disclosed in the present invention, which includes a servo motor 3, and the servo motor 3 is detachably installed on the test vehicle through a connecting mechanism 4. The outer peripheral side of the motorcycle handle pipe 602 is provided with an accelerator handle 601, a handle pipe plug 603 is fixed inside the handle pipe 602, and balance terminals are fixed on the outer sides of both ends of the handle pipe 602, and the balance terminals are fixed on the On the handle pipe plug 603 of internal thread. During the test, remove the balance terminal on the handle, and fix the servo motor 3 on the handle pipe plug 603.

[0080] The servo motor includes a casing 31, a front end cover 32, a rear end cover 33, and a motor cover 34. The two ends of the casing 31 are fixedly connected to the front end cover 32 and the rear end cover 33 respectively, and the motor cover 34 is fixed to the rear en...

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Abstract

The invention discloses a motorcycle noise measurement system and measurement method based on working condition automatic control. The noise measurement system comprises a vehicle-mounted measurement and control system and a fixed measurement and control system in communication connection with the vehicle-mounted measurement and control system, and the vehicle-mounted measurement and control system comprises a vehicle-mounted controller, a measurement subsystem, a servo subsystem, an operation display panel, an automatic control switch and a vehicle-mounted power supply. And the vehicle-mounted controller realizes real-time data acquisition of the rotating speed and the speed of the engine through the measurement subsystem, obtains a trigger signal of a motorcycle reaching a specified position of a noise measurement area, and completes control of the rotating speed and the speed of the engine in different test stages according to the specification of a measurement test method by a motorcycle noise related standard. Compared with the prior art, the influence of manual operation errors of a driver on a test result is avoided, the test result is objective and fair, and the repeatability is good; and the motorcycle test working condition control precision is high, invalid tests are avoided, the noise test time can be effectively shortened, and the test efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of motorcycle noise measurement, in particular to a motorcycle noise measurement system and a measurement method based on automatic control of working conditions. Background technique [0002] Referring to the national standard GB 16169-2005 "Motorcycles and Mopeds Acceleration Noise Limits and Measurement Methods", in the acceleration noise measurement method of motorcycles and mopeds, the driving noise measurement site, measurement area and microphone layout are as follows: Instructions attached Image 6 As shown, point O is the center of the measurement area, line AA' is the line-entry position (acceleration start line), line BB' is the line-out position (acceleration end line), and line CC' is the driving center line. [0003] The standard stipulates that during the measurement process, the test vehicle should drive the vehicle’s longitudinal center plane along the CC’ line to the AA’ line as far as poss...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01H17/00G01M17/007
CPCG01H17/00G01M17/007
Inventor 苏梅胡瑞曹洋尹涛李钢袁克忠李晶
Owner 天津内燃机研究所(天津摩托车技术中心)