A Local Bus Network with Autonomous Test Ability

This paper introduced a flexible bus concept and established a local test network based on this bus. The test network can be divided into three layers: single device layer, subsystem layer and system layer. The self-diagnosis and self-repair mechanism for the local net was established afterwards. Lastly a nonstop layer-analyzing test strategy was discussed deeply to improve test efficiency. The experiment of a simplified network model for a huge bridge monitoring system showed the efficiency of the method.