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Active noise reduction device for electric vacuum pump of new energy vehicle

An electric vacuum pump and active noise reduction technology, which is applied to pump components, variable displacement pump components, machines/engines, etc., can solve the problems of low pertinence of noise reduction and unsatisfactory noise reduction effect, and achieve strong pertinence Effect

Pending Publication Date: 2019-07-26
ZHEJIANG LEAPMOTOR TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, such traditional passive noise reduction methods are not very targeted, and the noise reduction effect is still unsatisfactory.

Method used

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  • Active noise reduction device for electric vacuum pump of new energy vehicle
  • Active noise reduction device for electric vacuum pump of new energy vehicle

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Experimental program
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Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0017] Such as figure 1 The illustrated embodiment is an active noise reduction device for an electric vacuum pump of a new energy vehicle, which is installed on a certain type of new energy vehicle.

[0018] The device includes a vacuum pump 1 and a noise reducer, wherein the noise reducer includes an acquisition module A, an analysis module B and a playback module C connected by signals. The vacuum pump, analysis module and playback module are all fixed in the engine room, while the acquisition module is fixed in the cockpit. Among them, the acquisition module uses the SIEMENS Test.lab test analysis system, G.R.A.S microphone and accessories; the analysis module is a single-chip microcomputer fixed in the cabin, and the single-chip microcomputer has built-in GOLD WAVE software, which can perform "phase inversion" on the sound collected by th...

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PUM

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Abstract

The invention discloses an active noise reduction device for an electric vacuum pump of a new energy vehicle. The active noise reduction device comprises a vacuum pump and a noise reduction device; the noise reduction device comprises an acquisition module, an analysis module and a playing module which are in signal connection; and the acquisition module is used for collecting noise from the vacuum pump, the analysis module is used for analyzing collected noise waves, the frequency, the amplitude and the waveform are acquired, and the playing module is then driven to play active noise with thesame frequency and amplitude but opposite waveform as the collected noise. The active noise reduction device has the beneficial effects that an active noise reduction means is adopted, so that stronger pertinence is achieved, and an ideal noise reduction effect can be realized.

Description

technical field [0001] The invention belongs to the field of automobile manufacturing, in particular to an active noise reduction device for an electric vacuum pump of a new energy vehicle. Background technique [0002] The brake system is the core guarantee of vehicle safety. Generally, the brake system of automobiles adopts hydraulic transmission. In order to amplify the braking force and improve the transmission effect, a vacuum booster is generally installed on the car, also called a vacuum booster pump, vacuum pump, booster pump, etc. On fuel vehicles, the vacuum of the vacuum booster pump is generated by the engine. As long as the engine is running, it can continuously generate negative pressure for the vacuum booster pump to use. In order to continue to use the mature and reliable hydraulic braking system on new energy vehicles without fuel engines, it is necessary to configure electric vacuum pumps to replace the role of vacuum booster pumps on traditional vehicles...

Claims

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Application Information

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IPC IPC(8): F04B39/00
CPCF04B39/0083
Inventor 宋建勋
Owner ZHEJIANG LEAPMOTOR TECH CO LTD
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