AEB Rear Stationary Testing

Automatic Emergency Braking (AEB) Rear Stationary Testing evaluates a vehicle’s ability to detect and avoid collisions with stationary objects behind it when the vehicle is in reverse. This is a crucial safety feature in preventing backover accidents. Here is a comprehensive framework for conducting AEB Rear Stationary Testing:

1. Test Objectives

    • Detection Accuracy: Ensure the system can accurately detect stationary objects behind the vehicle.
    • Braking Effectiveness: Validate that the system applies the brakes effectively to avoid or mitigate a collision.
    • Alerting Mechanisms: Verify if the system provides appropriate warnings before braking is applied.

    2. Testing Environment

      • Controlled Environment: Conduct testing in a closed, controlled space such as a test track or parking lot to minimize safety risks and ensure repeatability.
      • Clearances and Markings: Mark a defined area around the vehicle to simulate real-world scenarios.

      3. Test Scenarios

        Stationary Object Detection

        • Short Distance: Place the object at a close distance from the rear bumper (e.g., 0.5 meters).
        • Medium Distance: Position the object at varying distances (e.g., 1-2 meters).
        • Long Distance: Place the object at the maximum detection range of the AEB system.
        • Central and Offset Positions: Place objects directly behind the vehicle and slightly offset to test the system’s angular coverage.

        Test Vehicle Reversing Speeds

        • Perform tests at various reversing speeds:
          • Low Speed: Around 2-5 km/h (slow maneuver).
          • Moderate Speed: Around 10-15 km/h (common in parking lots).
          • High Speed: Test at the maximum reverse speed the vehicle is capable of (e.g., 20-25 km/h), though this is less common for AEB rear systems.

        Varying Object Types

        • Test with different objects:
          • Large Objects: Vehicles, dumpsters, or large barriers.
          • Small Objects: Cones, poles, or bicycles.
        • Assess how the system responds to varying levels of object contrast (e.g., dark-colored objects against a dark background).

        4. Performance Evaluation

          • Detection Accuracy:
            • Verify the system detects the object at the specified distances (e.g., 0.5 meters, 1 meter).
            • Ensure the system does not falsely detect objects that are too far or irrelevant.
          • Braking Activation:
            • Measure the time taken to activate the brakes once the object is detected.
            • Evaluate if the vehicle comes to a complete stop without impact (full braking) or applies partial braking (collision mitigation).
          • Braking Force:
            • Ensure the brake force applied is sufficient to prevent a collision or significantly reduce the impact speed.
          • Warning Alerts:
            • Verify the system provides auditory or visual warnings (e.g., sound, flashing lights) well before initiating braking.
            • Test if these alerts escalate based on the proximity of the object.