New energy vehicle capable of simulating sound of fuel vehicle

Abstract

The invention discloses a new energy vehicle capable of simulating fuel vehicle sound, and relates to the technical field of new energy vehicles, the new energy vehicle comprises a vehicle speed sensing unit and a controller, the controller comprises a threshold comparator, the threshold comparator comprises two input ends, the first input end is connected with a reference voltage, the reference voltage is a vehicle speed alarm threshold voltage, and the second input end is connected with a second input end; the second input end is connected with the output end of the vehicle speed sensing unit, the vehicle speed sensing unit and the controller are arranged, the controller is provided with a threshold comparator, when the threshold comparator outputs low level to the relay, the relay is communicated with the sound source storage unit, the driving output end and the loudspeaker, the loudspeaker is driven to be started, and sounds similar to driving work of a fuel vehicle are made. Therefore, when the electric vehicle runs at a low speed, loud sound can be made, the sound warning effect on surrounding people is achieved, and the safety of the electric vehicle in the running process is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicles, in particular to a new energy vehicle capable of simulating the sound of a fuel vehicle. Background Art

[0002] Compared with fuel vehicles, electric vehicles have the advantages of green energy, quiet driving, and reduced noise pollution. As energy and environmental issues receive increasing attention, electric vehicles are gradually being developed and used widely.

[0003] It is worth noting that electric vehicles are very quiet when driving. When they are driving in areas with dense pedestrians, the speed is slow and the noise is also low, so pedestrians may not notice the moving car; or when a parked electric vehicle needs to be driven again, because the electric vehicle starts at a slow speed and the noise is low, it is easy for pedestrians not to notice it, which poses a certain safety hazard. Therefore, electric vehicles also have certain dangers when driving, mainly because their working process is relatively quiet, and it is not easy to distinguish whether they are driving, thus reducing the sound warning effect on people around. Summary of the invention

[0004] In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a new energy vehicle that can simulate the sound of a fuel vehicle, thereby improving the safety of the electric vehicle during driving.

[0005] To achieve the above object, the present invention provides the following technical solution: A new energy vehicle capable of simulating the sound of a fuel vehicle, comprising a vehicle speed sensing unit and a controller, wherein the controller comprises a threshold comparator, the threshold comparator comprises two input terminals, the first input terminal is connected to a reference voltage, the reference voltage is a vehicle speed alarm threshold voltage, and the second input terminal is connected to the output terminal of the vehicle speed sensing unit;

[0006] The comparator is composed of a differential circuit, including an output terminal, and the output terminal outputs a high level or a low level according to the magnitude relationship between the input voltages of the first input terminal and the second input terminal;

[0007] The controller also includes a speaker control component, which includes a sound source storage unit, a relay, a drive output terminal and a speaker. The sound source storage unit, the relay, the drive output terminal and the speaker are connected in sequence, and the relay is connected to the output terminal of the threshold comparator.

[0008] Preferably, the sound stored in the sound source storage unit is the sound emitted by the engine of the corresponding fuel vehicle when the speed of the electric vehicle is less than the alarm speed.

[0009] Preferably, the warning vehicle speed is 20km / h.

[0010] Preferably, the vehicle speed alarm threshold voltage is set to a voltage value corresponding to when the vehicle speed sensing unit detects that the speed of the electric vehicle is 20 km / h.

[0011] Preferably, the vehicle speed sensing unit is a vehicle speed sensor.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The present invention is provided with a vehicle speed sensing unit and a controller, and the controller is provided with a threshold comparator. When the threshold comparator outputs a low level (that is, the voltage value output by the vehicle speed sensing unit after detecting the speed of the electric vehicle is lower than the vehicle speed alarm threshold voltage) to the relay, the relay will connect the sound source storage unit, the drive output end and the speaker, drive the speaker to start, and emit a sound similar to that of a fuel vehicle running, so that the electric vehicle can emit a loud sound when running at a lower speed, play a sound warning role to the surrounding people, and improve the safety of the electric vehicle during driving. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The present invention is a schematic diagram of the composition structure of a new energy vehicle that can simulate the sound of a fuel vehicle. DETAILED DESCRIPTION

[0015] See also Figure 1 , the present invention provides a technical solution: a new energy vehicle capable of simulating the sound of a fuel vehicle, comprising a vehicle speed sensing unit and a controller, the controller comprising a threshold comparator, the threshold comparator comprising two input terminals, the first input terminal being connected to a reference voltage, the reference voltage being a vehicle speed alarm threshold voltage, and the second input terminal being connected to an output terminal of the vehicle speed sensing unit;

[0016] The comparator is composed of a differential circuit, including an output terminal, and the output terminal outputs a high level or a low level according to the magnitude relationship between the input voltages of the first input terminal and the second input terminal;

[0017] The controller also includes a speaker control component, which includes a sound source storage unit, a relay, a drive output terminal and a speaker. The sound source storage unit, the relay, the drive output terminal and the speaker are connected in sequence, and the relay is connected to the output terminal of the threshold comparator.

[0018] Since electric vehicles are very quiet during driving, when they are driving in a pedestrian-dense area, the speed is slow and the sound is also very small, and pedestrians may not notice the moving car; or when a parked electric vehicle needs to be driven again, since the electric vehicle starts at a slow speed and the sound is small, it is easy for pedestrians to not notice it, which poses a certain safety hazard. Therefore, this embodiment provides an electric vehicle engine sound simulation system, including a vehicle speed sensor unit, a controller, and a speaker control component. Among them, the controller includes a threshold comparator, whose function is that the output end of the threshold comparator can output a high level (that is, the voltage value output by the speed sensing unit is higher than the speed alarm threshold voltage) or a low level (that is, the voltage value output by the speed sensing unit is lower than the speed alarm threshold voltage) according to the different size relationship between the first input end (that is, the connected vehicle speed alarm threshold voltage) and the second input end (that is, the voltage value output by the connected vehicle speed sensing unit after detecting the speed of the electric vehicle). Since the output end of the threshold comparator is connected to the relay of the speaker control component, when the threshold comparator outputs a low level (that is, the voltage value output by the speed sensing unit is lower than the speed alarm threshold voltage), the relay will connect the sound source storage unit, the drive output end and the speaker, drive the speaker to start, and emit a sound similar to that of a fuel vehicle running, so that the electric vehicle can emit a loud sound when running at a lower speed, which serves as a sound warning to the surrounding people and improves the safety of the electric vehicle during driving.

[0019] The sound stored in the sound source storage unit is the sound of the engine of the corresponding fuel vehicle when the speed of the electric vehicle is less than the alarm speed; in order to make the electric vehicle still emit a sound similar to the running sound of the fuel vehicle to warn pedestrians when the speed of the electric vehicle is less than the alarm speed. Therefore, the sound stored in the sound source storage unit is the sound of the engine of the corresponding fuel vehicle when the speed of the electric vehicle is less than the alarm speed.

[0020] The alarm speed is 20km / h; based on the experience of actual driving of electric vehicles, when the speed of an electric vehicle is less than 20km / h, the sound made by the electric vehicle is already very small. Therefore, in order to ensure the safety of the electric vehicle during driving, the alarm speed is set to 20km / h.

[0021] The speed alarm threshold voltage is set to the voltage value corresponding to when the speed sensor unit detects that the speed of the electric vehicle is 20km / h; the speed alarm threshold voltage is set to the voltage value corresponding to when the speed sensor unit detects that the speed of the electric vehicle is 20km / h. The working principle and working process of this embodiment are as follows: when the output end of the threshold comparator outputs a low level (that is, the speed sensor unit detects that the speed of the electric vehicle is lower than 20km / h and the voltage value converted into an electrical signal output is lower than the speed alarm threshold voltage), since the output end of the threshold comparator is connected to the relay of the speaker control component, when the relay receives the low level output from the output end of the threshold comparator, it will connect the sound source storage unit, the drive output end and the speaker, control the drive speaker to start, and emit a sound similar to that of a fuel vehicle, so that the electric vehicle can emit a loud sound when traveling at a speed lower than 20km / h, which serves as a sound warning to the surrounding people and improves the safety of the electric vehicle during driving.

[0022] The vehicle speed sensing unit is a vehicle speed sensor.

Claims

1. A new energy vehicle that can simulate the sound of a fuel vehicle, characterized in that: It includes a vehicle speed sensing unit and a controller, wherein the controller includes a threshold comparator, wherein the threshold comparator includes two input terminals, a first input terminal is connected to a reference voltage, the reference voltage is a vehicle speed alarm threshold voltage, and a second input terminal is connected to an output terminal of the vehicle speed sensing unit; The comparator is composed of a differential circuit, including an output terminal, and the output terminal outputs a high level or a low level according to the magnitude relationship between the input voltages of the first input terminal and the second input terminal; The controller also includes a speaker control component, which includes a sound source storage unit, a relay, a drive output terminal and a speaker. The sound source storage unit, the relay, the drive output terminal and the speaker are connected in sequence, and the relay is connected to the output terminal of the threshold comparator.

2. A new energy vehicle capable of simulating the sound of a fuel vehicle according to claim 1, characterized in that: The sound stored in the sound source storage unit is the sound produced by the operation of the engine of the fuel vehicle when the speed of the electric vehicle is less than the alarm speed.

3. A new energy vehicle capable of simulating the sound of a fuel vehicle according to claim 1, characterized in that: The warning vehicle speed is 20km / h.

4. A new energy vehicle capable of simulating the sound of a fuel vehicle according to claim 1, characterized in that: The vehicle speed alarm threshold voltage is set to the voltage value corresponding to when the vehicle speed sensing unit detects that the vehicle speed of the electric vehicle is 20 km / h.

5. The new energy vehicle capable of simulating the sound of a fuel vehicle according to claim 1, characterized in that: The vehicle speed sensing unit is a vehicle speed sensor.

Images