Method, device and system for controlling sound pressure of loudspeaker of automobile

Abstract

The invention discloses a method for controlling the sound pressure of a loudspeaker of an automobile, which comprises the following steps: collecting a sound pressure control signal, wherein the sound pressure control signal comprises an environmental noise signal, a vehicle speed signal and an operation acceleration signal; determining the grade of each signal in the sound pressure control signal according to the magnitude of each signal in the collected sound pressure control signal; determining the grade of a sound pressure passage corresponding to the current sound pressure control signalaccording to a logical control relationship of the grade of each signal in the preset sound pressure control signal and the grade of the sound pressure passage output by the volume of the loudspeakerof the automobile; and selecting the corresponding sound pressure passage to output the volume of the loudspeaker of the automobile according to the grade of the determined sound pressure passage. Correspondingly, the invention also provides a device and a system for controlling the sound pressure of the loudspeaker of the automobile. By executing the invention, the loudspeaker of the automobilecan carry out intellectualized pronunciation according to a running environment and a vehicle speed condition at the precondition that the number of the loudspeaker is not increased.

Description

technical field [0001] The invention relates to the field of automobiles, in particular to a method, device and system for controlling sound pressure of automobile horns. Background technique [0002] With the rapid development of the modern economy, people's lives are more in pursuit of personalization and diversification. As a daily tool for modern people, cars must also adapt to the development of the times. The car horn is an indispensable emergency active safety measure for cars. It can remind pedestrians and vehicles in time in many cases, so as to avoid traffic accidents. [0003] Existing car horns generally use high-intensity audio output, and only one intensity is set, that is, the horn has only one volume, and the volume of the horn cannot be controlled according to different occasions. The defect of this single large volume sometimes frightens Passers-by, etc., bring unexpected serious consequences. In order to overcome this defect, multi-tone speaker technolog...

AI Technical Summary

Problems solved by technology

[0003] Existing car horns generally use high-intensity audio output, and only one intensity is set, that is, the horn has only one volume, and the volume of the horn cannot be controlled according to different occasions. The defect of this single large volume sometimes frightens Passers-by, etc., bring unexpected and serious consequences

In order to overcome this defect, multi-tone speaker technology can be used. There are two main solutions for the existing multi-tone speaker technology. One is to increase the speaker and other sound-generating equipment, which will cause an increase in cost and weight, and each speaker output The sound pressure is still unique; the second is: use piezoelectric sensors to generate signals, and then directly amplify and output the signals; this processing method simply relies on the opening and closing of the horn switch to control the working conditions of the horn, and the horn occurs The audio will fluctuate with the unstable strength of the hand, and it is easy to produce strange sounds, or even no sound at all

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