工业无线传感云中面向移动机器人的自适应信任演化机制

摘要

在智能制造系统中,工业无线传感器网络和生产设备以分散的、无人值守的方式运行.传感云作为一种潜在的技术能有效地集成分散的设备为云服务并提供给移动机器人使用.当移动机器人通过传感云平台访问远程云设备时,由于潜藏的攻击者容易通过无线信道截获密钥并窃听设备操作内容,这使得密钥管理和设备操作权限的控制成为其安全、可靠运行的关键.形式化了博弈参与者的效用函数,对自适应信任度更新过程进行了分析,提出了基于演化博弈的自适应信任管理机制.仿真结果显示,提出的方法能有效提高传感云网络系统和设备的安全性.%Industrial wireless sensor networks and production equipments are deployed in unattended and distributed intelligent manufacturing system (IMS).Sensor-cloud as a potential technology can effectively integrate distributed equipments as a service and provide it to mobile robots.However,when the mobile robots access the remote devices via sensor-cloud platform,because potential attackers easily intercept keys and eavesdrop equipment operation contents through wireless channels,which makes the key management and the control of equipment operation permission become crucial to the safe and reliable operation of 1MS.Therefore,the utility function of game players were formalized,the adaptive trust update process was analyzed,and an adaptive trust management mechanism based on evolutionary game was proposed.Simulation results show that the proposed method can effectively improve the security of sensor-cloud network systems and equipments.