One of the advantages of electric vehicles is that they have a low sound and almost no noise when starting, but this advantage has also become a concern for car owners. Why is that said? It is precisely because the sound of electric vehicles is too low, especially when driving at low speeds, that pedestrians often cannot perceive the presence of the vehicle, which poses a safety hazard. What are the design requirements for an electric vehicle low-speed warning sound system specifically designed for this purpose?

In order to alert pedestrians or vehicles outside the vehicle, it is necessary to install an electric vehicle low-speed warning sound system on the electric vehicle. At the same time, in order to facilitate the driver's perception of changes in the warning sound, a small horn can be attached to the hidden host. The external prompt speaker is installed outside the cabin and needs to have waterproof performance. Its protection level is designed according to IP67 requirements.
1. The effective working speed of the low-speed warning sound system for electric vehicles is greater than 0km/h and less than or equal to 20km/h; For speeds above 20km/h, if the low-speed warning sound system of an electric vehicle needs to work, the sound pressure level emitted should not exceed its warning sound at a speed of 20km/h.
2. The sound emitted by the low-speed warning sound system of electric vehicles should include at least two 1/3 octave bands within the range of 160-5000Hz, and at least one 1/3 octave band below 1600Hz.
3. When the vehicle is traveling at a certain speed within the range of 5-20km/h, the frequency of at least one sound emitted by the electric vehicle low-speed warning sound system will change with the vehicle speed.
4. The sound emitted by the low-speed warning sound system of electric vehicles should avoid using specific sounds such as ambulance and fire truck alarm sounds. It is recommended to use sound types similar to traditional internal combustion engine vehicles.
5. The low-speed warning sound system of electric vehicles is equipped with a volume adjustment switch and system indicator lights.
6. The sound pressure of the prompt sound should generally not exceed the noise level of traditional cars. Referring to GB1495-2002 "Limits and Measurement Methods for External Noise of Accelerating Vehicles" for the noise limits of external acceleration driving and GB16170-1996 "Limits for Fixed Noise of Vehicles" for constant speed driving, set the sound pressure of Jiaxiang electric vehicle low-speed warning sound system to 70-80dBA (100cm).
7. The protection level refers to the requirements of GBM10485 and should comply with IPX5.
The small knowledge about the design requirements of the low-speed prompt sound system for electric vehicles has been shared with you here. We will continue to update it for you in the future, hoping that the shared content can help you better solve the problem. If you would like to know more exciting information about the system, please feel free to visit our official website at any time to inquire and learn more.