Electric vehicle low speed warning tone system

Abstract

The invention relates to the technical field of electric vehicle warning tone systems, in particular to an electric vehicle low speed warning tone system based on a vehicle-mounted acoustic navigationsystem. The electric vehicle low speed warning tone system comprises a CAN circuit, an MCU circuit and a DSP circuit; the CAN circuit is used for real-time acquisition of an electric vehicle traveling speed, the MCU circuit is used for determining that when the driving speed is lower than preset speed, a control signal is output, and the DSP circuit performs audio decoding processing on pre-stored warning tone data according to the control signal, and outputs a warning audio signal. According to the electric vehicle low speed warning tone system based on the vehicle-mounted acoustic navigation system, the electric vehicle low speed warning tone system is integrated into a conventional vehicle-mounted acoustic navigation system, compared with an existing independently arranged low speed warning tone system, the integration level is higher, cost is lower, complexity in system design is reduced, and more energy conservation is achieved.

Description

technical field [0001] The invention relates to the technical field of electric vehicle prompt sound system, in particular to a low-speed electric vehicle prompt sound system based on a vehicle audio navigation system. Background technique [0002] In the era of fuel vehicles, the quietness of the engine is one of the important factors affecting the environmental noise and vehicle comfort, while electric vehicles do not have to worry about the problem of loud motor sound. Pedestrians feel it. For example, in residential areas where people and vehicles are not separated, campuses and other environments where people and vehicles are mixed, or on relatively narrow roads, when an electric vehicle driving at a low speed approaches a pedestrian in front, the noise is too small, and the pedestrian may not be able to perceive the presence of the vehicle, especially In the specific situation of road intersections and people with visual impairments or even blind people walking, the p...

AI Technical Summary

Problems solved by technology

[0004] As a separate vehicle electrical equipment, the low-speed notification sound system of electric vehicles has low integration, complicated circuit design and software design, complex structural design, and increased energy consumption of the whole vehicle.

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