In-vehicle engine multi-sound-effect active control system

An active control system and engine technology, applied in the direction of control devices, vehicle components, circuits or fluid pipelines, etc., can solve the problem of increasing vehicle weight, weakening the correlation of interior sound, and unable to meet the diverse needs of car users for car sound, etc. problems, to achieve the effect of broadening the degree of freedom of design

CN110126840AActive Publication Date: 2019-08-16JIANGSU UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2019-08-16

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Abstract

The invention discloses an in-vehicle engine multi-sound-effect active control system, and relates to an active control technology of vehicle interior sound. The system comprises an engine speed sensor, an accelerator pedal position sensor, a microphone, a microphone preamplifier, a speaker, a power amplifier, an engine multi-sound-effect controller and a human-computer interaction module; the engine multi-sound-effect controller includes an A / D conversion module, a multi-sound-effect processing module, a D / A conversion module and a communication interface; a software architecture of the multi-sound-effect processing module includes an order signal generator, an ignition self-adaptive control module, a dynamic gain adjuster and a control signal selection module; the system obtains three in-vehicle sound effects of "comfortable", "powered" and "sporty" by actively weakening or actively adding engine sound of appropriate order components, the sound preferences and needs of different groups of people can be met, driving interaction and experience are enhanced, and the brand competitiveness and attractiveness of vehicle products are enhanced.
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Description

technical field

[0001] The invention relates to the active control technology of the interior sound of the automobile, in particular to an active control system for the interior sound of the engine which can realize various sound effects of the engine. Background technique

[0002] Under the background of stricter noise regulations and increasingly fierce market competition, interior noise control is a matter of great concern to automakers. For a long time, the evaluation of noise control effect has been based on the sound level, but the sound level only shows the strength of the sound in the physical sense, which is not completely consistent with the actual auditory experience. In the 1990s, the concept of sound quality was introduced internationally to study vehicle acoustics. Sound quality expresses people's feelings about sound from both subjective and objective aspects, and the description of sound is more comprehensive and real.

[0003] Recently, it has been recogni...

Examples

Embodiment Construction

[0040] as attached figure 1 As shown, the engine multi-sound effect active control system in the car comprises an engine speed sensor 1, an accelerator pedal position sensor 2, a microphone 3, a microphone preamplifier 4, J loudspeakers 5, J power amplifiers 6, and an engine multi-sound effect A controller 7 and a human-computer interaction module 8 .

[0041] The engine speed sensor 1 is installed at the front end of the crankshaft or the camshaft of the engine, and its output terminal is electrically connected with an input terminal of the engine multi-sound effect controller 7; The number of 3 is comprehensively selected according to the required sound field control range and system cost, each microphone 3 is electrically connected to the input end of a microphone preamplifier 4, and the output of the microphone preamplifier 4 is used as an input of the engine multi-sound effect controller, There are 1 roads in total.

[0042] The accelerator pedal position sensor 2 is in...