AEKD-STEREOAVAS Integrated Stereo AVAS Solution

STMicroelectronics' AEKD-STEREOAVAS is an AutoDevKit acoustic vehicle alerting system (AVAS) demo. It consists of an AEK-AUD-C1D9031 compact AVAS board, an AEK-MCU-C4MLIT1 domain zone controller, and two AEK-LCD-DT028V1 display expansion boards, plus two loudspeakers and a switching button.

The AEK-AUD-C1D9031 communicates with the AEK-MCU-C4MLIT1 via CAN protocol, exchanging commands like start/stop to simulate the alerting sounds used in e-vehicles.

The AEK-AUD-C1D9031 ECU reproduces the sound through a pair of integrated Class D audio amps connected to the loudspeakers. Two AEK-LCD-DT028V1 boards with resistive touch allow the user to interact with the demo. The first screen shows a graphic simulation of the electric motor RPMs, while the second allows starting/stopping the demo and regulating the sound volume and the engine RPMs.