Electric vehicle pedestrian sound prompting device and realization method
A sound reminder and electric vehicle technology, applied in audio signals, bicycle accessories, transportation and packaging, etc., can solve the problem of low noise and cannot remind pedestrians, and achieve the effect of simple structure, efficient reminder and increased possibility
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[0021] Embodiment: A kind of electric vehicle pedestrian voice prompting device, its circuit principle connection diagram is as follows figure 1 As shown, it includes a speaker 2 and a controller 1, the speaker and the controller are connected by an audio transmission line 7, the speaker is arranged at the front of the electric vehicle, and the frequency of the sound emitted by the speaker includes a frequency lower than 1600KHz. The controller is also connected with vehicle speed sensor 3 , gear position sensor 4 , radar sensor 5 and motor 6 . There is a circular baffle on the surface of the speaker, and the circular baffle is also connected to the motor; the structural diagram of the circular baffle is shown in figure 2 As shown, the circular baffle 8 is provided with two arc-shaped openings 9, and the two arc-shaped openings are symmetrical to the center of the circular baffle. The arc of the arc-shaped opening is 90°. The front part of the electric vehicle is provided w...
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