Electric vehicle pedestrian warning method and system

A pedestrian warning and electric vehicle technology, applied to vehicle components, frequency/direction characteristic devices, sound signal devices, etc., can solve the problems of poor low-frequency control effect, unavailable length, limited space, etc., to reduce costs and have practicability , the effect of reducing the length of the array

Active Publication Date: 2019-07-30
COLSONIC SUZHOU ELECTRONICS CO LTD
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Problems solved by technology

However, the space in the front cabin of the car is limited, and the required length cannot be provided, so the low-frequency control effect is poor. If you want higher sound quality, you cannot control the propagation direction.

Method used

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  • Electric vehicle pedestrian warning method and system
  • Electric vehicle pedestrian warning method and system
  • Electric vehicle pedestrian warning method and system

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Embodiment Construction

[0039] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art. It should be noted here that the descriptions of these embodiments are used to help understand the present invention, but are not intended to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not constitute a conflict with each other.

[0040] This embodiment provides a pedestrian warning method for an electric vehicle, the specific process of which is as follows.

[0041] (1) Receive relevant vehicle body parameters such as vehicle speed, ignition switch, accelerator, etc. through CAN network or hard wire.

[0042] (2) Synthesis processing: according to the parameters of the vehic...

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Abstract

The invention discloses an electric vehicle pedestrian warning method and system. The sound propagation direction of a pedestrian warning device can be better controlled without reducing the sound quality, and damaging of an original sound field in a vehicle is avoided. The electric vehicle pedestrian warning method comprises the following steps that A, vehicle body parameters are provided; B, a sound source is synthesized according to the vehicle body parameters; C, virtual bass processing is carried out on the synthesized sound source to remove the low frequency part, and only the high frequency part is retained; and D, focusing is carried out on the processed sound source, and the sound source is played through a loudspeaker array to limit the sound to be transmitted in a specified direction.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to a pedestrian warning method and system for electric vehicles. Background technique [0002] Because electric cars don't use an internal combustion engine, they're quiet at low speeds, so pedestrians often don't notice the car when it's behind them, increasing the chance of a crash. At present, China has issued a draft that requires electric vehicles to be mandatory to install pedestrian warning devices to remind them of the presence of vehicles. [0003] In practical applications, the sound of the pedestrian alarm is not only transmitted outward, but also transmitted inward. In terms of application requirements, the sound of the pedestrian warning device is used as a warning, and should only be transmitted outward, and can only be heard by pedestrians. If the sound spreads inward and enters the car, it will break the original adjustment of the car. The sound field of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60Q5/00H04R1/20
CPCB60Q5/008H04R1/20
Inventor 蔡野锋叶超马登永沐永生
Owner COLSONIC SUZHOU ELECTRONICS CO LTD
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