012V / 24V DC Acoustic Vehicle Alert System

1. Product Overview

The acoustic vehicle alert system is designed to improve safety for pedestrians and cyclists in urban and residential areas where electric vehicles often move quietly. At speeds below 20 km/h, this system produces a clear and recognizable sound, making sure that people nearby can easily notice the approaching vehicle. By doing so, it helps prevent potential accidents while ensuring compliance with international safety regulations. For electric vehicle manufacturers, integrating such a system is not just about meeting standards, but about protecting lives.

2. Core Components

The acoustic vehicle alert system is built around a compact yet durable speaker module connected to the vehicle’s CAN network.

• Speaker Unit: Generates sound with a maximum level of 75 dB at a distance of 1 meter, ensuring clarity without being disruptive.
• Electronic Control Unit (ECU): Reads vehicle speed and gear position through the CAN bus, and triggers sound output accordingly.
• Durability Housing: Rated IP67, offering protection against dust, water, and harsh environments.
  This combination ensures reliability under both city and extreme driving conditions.

3. Key Functions

The acoustic vehicle alert system responds intelligently to driving conditions:

• Neutral: The unit stays silent to avoid unnecessary noise.
• Driving: Below 20 km/h, the system generates a distinctive alert tone that increases or decreases with vehicle speed.
• Reversing: The system switches to a “Du Du” alert sound to clearly signal reverse movement.

By mimicking natural driving patterns, it ensures pedestrians and cyclists can intuitively recognize the vehicle’s behavior.

4. Advantages for Vehicle Safety

• Enhanced Pedestrian Protection: Helps vulnerable road users notice approaching electric vehicles early.
• Compliance with Regulations: Supports global EV safety requirements related to pedestrian warning systems.
• Energy Efficient: Operates at <0.8A/12V, minimizing impact on the vehicle’s power system.
• Durable and Reliable: Wide working temperature range from -30°C to 85°C ensures year-round stability.

For manufacturers, these advantages mean not only safer vehicles but also added value in customer trust.

5. Applications

The acoustic vehicle alert system can be installed across different types of electric vehicles:

• Passenger EVs in urban commuting
• Delivery vans operating in residential zones
• Electric buses navigating busy streets
• Industrial EVs in factories and campuses

Its flexibility makes it an essential safety feature in today’s growing electric mobility market.

6. Research and Development

Our engineering team has dedicated extensive effort to refining the acoustic vehicle alert system. Continuous R&D ensures the sound patterns are both noticeable and non-intrusive, while meeting evolving global standards. By working closely with automotive developers, we constantly improve system integration and adapt to new vehicle architectures.

7. Manufacturing and Quality Control

The system is manufactured under strict quality management processes. Every unit is tested for sound consistency, durability, and CAN communication stability. From material sourcing to final assembly, quality control ensures that each acoustic vehicle alert system delivered is reliable and ready for long-term performance.

8. Frequently Asked Questions (FAQ)

Q1: Why is an acoustic vehicle alert system necessary?
A: Electric vehicles are extremely quiet at low speeds, which increases the risk of accidents. The system alerts pedestrians and cyclists, enhancing safety.

Q2: Is the system customizable for different vehicles?
A: Yes, sound profiles and CAN communication settings can be tailored to suit various vehicle models.

Q3: Does the system consume much power?
A: No, it is highly energy-efficient, drawing less than 0.8A at 12V.

Q4: How durable is the system in extreme environments?
A: With an IP67 protection level and wide temperature tolerance, the system works reliably in both hot summers and cold winters.