Vehicle approach prompt tone acquiring device and vehicle approach prompt tone acquisition method

Abstract

The invention provides a vehicle approach prompt tone acquiring device and a vehicle approach prompt tone acquisition method. The vehicle approach prompt tone acquiring device is used for acquiring a prompt tone prompting that a vehicle approaches to a observer and comprises an exciter, a trigger, a microphone, a vehicle position detecting device and an acquiring front end, wherein the exciter is excited when the vehicle passes through to produce an acquisition starting signal, the trigger is triggered by the observer and produces a trigger signal when the observer judges that the vehicle approaches to, the microphone is used for acquiring an acoustic parameter at the position of the observer, the vehicle position detecting device is used for detecting vehicle position information, and the acquiring front end receives and acquires the acquisition starting signal from the exciter, the trigger signal from the trigger, the acoustic parameter from the microphone and the vehicle position information from the vehicle position detecting device. Therefore, by means of the vehicle approach prompt tone acquiring device and the vehicle approach prompt tone acquisition method, the vehicle approach prompt tone can be accurately developed and designed by combining subjective response of the observer and objective parameter synchronous acquisition.

Description

Technical field [0001] The present invention relates to a method and a device for collecting a vehicle approaching prompt sound, in particular to a collecting device and a collection method for analyzing the approaching prompt sound of a new energy vehicle when driving. Background technique [0002] For traditional internal combustion engine-driven vehicles, the main sources of noise radiated by the vehicle during driving include: intake system, exhaust system, combustion of the engine body, mechanical noise, tire noise, and wind noise generated by friction between the vehicle and the air. [0003] For new energy vehicles, a hybrid type that uses an electric motor as a driving source and an electric motor and an internal combustion engine as a driving source are mostly used. These vehicles are usually equipped with a power battery that can be repeatedly charged and discharged. The electric motor is driven by the electric energy stored in the power battery. In addition to the power...

AI Technical Summary

Problems solved by technology

[0005] For new energy vehicles, especially when the motor drives the vehicle alone, since there is no intake and exhaust system, there is no intake and exhaust noise, and the radiation noise of the motor is much smaller than that of the internal combustion engine, so the external radiation noise of the new energy vehicle is relatively low when driving. Vehicles driven by internal combustion engines should be small, and pedestrians cannot judge whether there is an approaching vehicle based on the radiation noise of new energy vehicles. Only when the vehicle is very close to pedestrians can it be judged that there is a vehicle approaching. When the vehicle is driven by an electric motor, it is necessary to analyze the impact of the prompt sound on pedestrian safety when the vehicle is approaching

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