关键词: 物联网, 感知层, 混合逻辑动态（MLD）, 机动车运行安全监测

Abstract: According to the diversity and complexity of the Internet of Things（IOT） perception terminal, the Mixed Logical Dynamic（MLD） modeling method is adopted in this paper, the unified expression for IOT perception layer measurement and control process behavior is derived. The perception layer measurement and control process behavior is described by the state variables, input variables and auxiliary variables. The operation constraint, logical rules and continuous dynamic characteristic can be integrated as a mixed integer inequality constraint state equation form. Through this model, it can be in the macro grasped the system process behavior. The system operation constraints, qualitative knowledge factors can be considered. So it lays an important foundation for the optimization of coordination of the measurement and control system. IOT perception layer behavior modeling method based on MLD is used to construct the vehicle operating safe state monitoring system model, and the result shows that the modeling method is feasible, rationality and effective.

Key words: Internet of Things（IOT）, perception layer, Mixed Logical Dynamic（MLD）, vehicle operating safe state monitoring