Data recording and reinjection for ECU validation
The validation of autonomous driving functionalities requires precisely recorded data from vehicle sensors like video or radar based on real driving scenes.
The SLA is a high-precision SerDes video, and LiDar data-logging and replay solution to enable the testing
and validation activities of real scenarios required for autonomous driving of level 4 and 5.
Data recording in a test vehicle
SLA will forward the sensor data to the ECU for normal in-vehicle processing. In parallel the SLA will time-stamp the received data, optionally compress, packetize, and send it via one or multiple 10Gb/s Ethernet ports to the data logger
SLA in a HIL environment
Re-injection of the data in an open-loop HIL environment:
Monitor how the system reacts in any scenario recorded in the past (reproducible validation scenarios). The SLA receives the recorded data pack it via one or multiple 10Gb/s Ethernet ports. Then the data is unpacked and decompressed while the original data stream will be reconstructed packet by packet. The SLA sends the data stream to the ECU with the exact same timing the packets were recorded.
Injection of the data in a closed-loop HIL environment:
Monitor how the system works in any simulated (artificial) scenario.
The SLA receives simulated data, pack it that will be unpacked and used to generate a data stream it the SLA will send to the ECU with minimal latency. The simulation computer usually evaluates the ECU reaction simultaneously and adjusts the rendered data stream accordingly.
The SLA is available in four different versions, which differ in terms of the number of channels, the connector types and the link technologies used.
We have two 4-channel Coax solutions:
A solution supporting Maxim GMSL2 Link technology and TI FPD Link III technology.
We also have a 1-Coax and 1-SFP + solution for the GSML 2 Link.