SOUND EMISSION DEVICE FOR ELECTRIC VEHICLES

Abstract

The sound emission device for electric vehicles makes it possible to give sound to the motion of these vehicles, so that no sound reference is lost for pedestrians while they are in motion and their characteristic sound is a beneficial frequency for the vegetable world.

Claims

1. A sound emission device for electric vehicles, wherein the device is configured to: take the following four signals from an accelerator of the electric vehicle: GND: Ground of the electrical circuit of the car; VDC: Power circuit of the car (5V); SW: Switch that goes from 0V to 5V when the pedal is operated; and A: Output that varies between 0V and 3.06±0.02V*; and process the four signals, resulting in an output, where the output determines a sound emitted in for from the electric vehicle.

2. The device of claim 1, characterized in that the output A varies between 0V and 3.06V which is the response of a hall effect sensor that detects the distance or proximity of two magnets that move when the throttle.

3. The device of claim 2, characterized in that the output passes through a 10-bit digital analog converter with VCC reference voltage that provides a binary value between 0x000 and 0x3FF (hexadecimal notation).

4. The device of claim 1, characterized in that the frequency range favors development for plants.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0007] For the purpose of illustration, there are shown in the drawings certain embodiments of the present invention. It should be understood that the invention is not limited to the precise arrangements, dimensions, and instruments shown. In the drawings:

[0008] FIG. 1 illustrates a sound diagram associated with one embodiment of the sound emission device of the present invention.

DETAILED DESCRIPTION OF THE ILLUSTRATED EMBODIMENTS

[0009] The device takes four signals from the accelerator.

1. GND: Auto electrical circuit ground
2. VDC: Auto electrical circuit power (5V)
3. SW: Switch that goes from 0V to 5V when the pedal is operated
4. A: Output that varies between 0V and 3.06±0.02V*

[0010] Output A varies between 0V and 3.06V which is the response of a hall effect sensor that detects the distance or proximity of two magnets that move when the accelerator is pressed.

[0011] This output of the accelerator circuit is taken as input of the embedded system. It goes through a 10-bit digital analog converter with VCC reference voltage that provides a binary value between 0x000 and 0x3FF (hexadecimal notation). Then, this binary value is correlatively located at a minimum value and another maximum previously determined. These values are the maximum frequency and minimum frequency to reproduce that correspond to the range of frequencies that favor the development for the plants. From here the process can continue in two ways: [0012] 1. These frequencies are translated into a period of a digital PWM signal (pulse width modulation) that activates an active buzzer that is in the embedded system [0013] 2. This value determines which previously recorded sound will be played. It would be obtained from an integrated or similar SD memory.

[0014] This process is performed cyclically and at a high speed which allows the accelerator to be detected “in real time” since the speed with which the accelerator is checked again is less than the speed of the human action in pressing it.

[0015] The implementation of sound in the car will be through speakers strategically located in the car infrastructure.