Autonomous Emergency Braking (AEB) Test

Introduction

Our customer, a new manufacturer of Electric Vehicles, needs to validate the performance of the ADAS (Advanced Driver Assistance Systems) functions of their products. The AEB (Autonomous Emergency Braking) test was performed according to the GB/T 33577-2017 standard. The following tests were done mainly on the test field:

• Record the AEB’s commands via CAN & video and display them live during testing

• Constantly measure the distance between the subject vehicle and the target vehicle

• Stationary POV test. This test evaluates the ability of the FCW function to detect a stopped lead vehicle. In order to pass the test, the FCW alert must be issued when the time-to-collision (TTC) is at least 2.1 seconds.

The data acquisition and measurement setup

DAQ system

• DEWE-43 data acquisition system

• R2DB data acquisition system (works as RTK station)

Sensors and transducers

• DS-IMU2 inertial measurement unit

• DS-VGPS-HSC 100 Hz GPS sensor

• DS-WIFI2 wireless communication package

• Logitec C920 web cameras (3x)

Software

• DewesoftX

• DewesoftX Polygon plugin

AEB test setup

The CAN acquisition, video, DS-IMU2, and DS-VGPS-HSC devices have been configured in the DewesoftX software. We also need to define the Subject vehicle, the Front vehicle, and the route in the Polygon plugin. Clearance and TTC can be calculated by polygon and math functions.

Data measurement and analysis

When the customer did the test, he could see important parameters (velocity, clearance, TTC, and so on) online clearly. When the customer finished the test, he was able to see more details. Everything is recorded synchronously.

Test conclusion

The whole measurement took less than one day. We installed all the devices and sensors in the morning. The real tests were performed in the afternoon.

The customer’s Electric Vehicle could pass the test, but we couldn’t get all AEB data from the CAN port, because the manufacturer doesn’t output all parameters. The customer is satisfied with fast installation, easy setup, and powerful online data processing.