Modeling Bus Load on CAN

The existence of high load and latency in the CAN bus network would indeed lead to a situation where a given message crosses its deadline; this situation would disturb the continuity of the required service as well as activating fault codes due to delay of message delivery, which might lead to system failure. The outcome and goal of this research is to research and formulate methods to determine and model busload and latencies, by determining parameters such as alpha and breakdown utilization, which are considered as indications to the start of network breakdown when a given message in a dataset start to introduce latency by crossing its deadline which are totally prohibited in critical real time communications. The final goal of this study is to develop a TOOL for calculating, modeling, determining and visualizing worst case busload, throughput, networks¿ breakdown points and worst case latency in Scania CAN bus networks which is based on the J1939 protocol.