Electric car driving system sound acquisition sounding method and device

Abstract

An electric car driving system sound acquisition sounding method and device relates to electrical system and acoustics caution systems of electric cars. The method includes the following steps: acquiring a sound signal, a car speed signal and a motor rotation speed signal in a motor cabin in real time; filtering out harsh frequency bands in the signals according to the car speed signal and the motor rotation speed signal so as to reduce annoyance of sounds, transmitting the signals to loudspeakers inside and outside the car, and driving the loudspeakers to give real-time sounds of the electric car. The electric car driving system sound acquisition sounding device includes an MCU, loudspeakers inside and outside the car, a car speed signal acquisition unit, a motor rotation speed signal acquisition unit, a sound acquisition device and a filtering processing device. The electric car driving system sound acquisition sounding device is simple in structure, and can truly give respective sounds of the car; the sounds are full in personality, comfortable, melodious, are excellent in subjective perceptibility, can allow passengers to easily distinguish the type of the car, and are excellent in intuitional feeling; the quality, performance, failures and the use time of the car can be estimated according to the sounds of the motor.

Description

technical field [0001] The present invention relates to the electrical system and acoustic warning system of electric vehicles, more specifically, a kind of pleasant sound that can emit the unique individuality of electric vehicles, pedestrians and drivers can distinguish the model and brand of the vehicle according to the sound Features such as strong intuition, strong sense of power of electric vehicles, good subjective sensibility, so that the driver's attention is more concentrated, and the driver and passengers can distinguish the performance and failure of the car according to the sound. device. Background technique [0002] We know that due to outstanding energy and environmental issues, the research and development of some new energy vehicles has become the general trend. Among them, with the development and improvement of motor technology, electric vehicles have gradually entered people's field of vision. In addition to the different power sources, electric vehicl...

AI Technical Summary

Problems solved by technology

The smaller noise will bring two prominent problems: first, the quieter environment in the car will make the occupants feel less powerful about the power of the electric car, and the subjective experience will be poor. At the same time, it may cause attention when driving. Second, due to the low noise, compared with traditional cars, it is difficult for pedestrians to perceive the existence of electric vehicles, thus causing traffic accidents

The common point of these five patents is that the sound of the traditional car engine is used to simulate the sound of the electric car to solve the problems of poor driving experience and poor acoustic warning. These patents have the following defects in common: 1. Electric cars It has its own unique sound of the electric drive system. It uses the sound of traditional cars to simulate sound, which loses the unique sound characteristics of electric vehicles. It is impossible to distinguish the model, brand and other characteristics of electric vehicles from the sound. Poor quality, unable to distinguish and evaluate the performance of the car from the sound

2. Using the traditional car engine to simulate the sound, the occupants cannot perceive the real sound of the motor, and cannot judge the operation of the motor and the transmission box from the sound. When the motor or transmission mechanism fails, protective measures cannot be taken in time, which is easy to cause failure Expansion of China, and even lead to dangerous situations

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