According to the diversity and difference of the role played by nodes in WSN, the role mapping framework model in WSN was proposed. A role-based middleware for wireless sensor networks(RobMSN) was designed based on that model. From the view of the formal semantics and specifications of the middleware, the role mapping specifications solve the problem of semantic conflicts in role mapping abstract, making the role mapping context fully reflected in the role specifications of middleware. Applications will be mapped as the specific roles of node which played in the wireless sensor networks using RobMSN, it can be cross-platform and implement dynamic application services. Finally, an application development example was used to illustrate the design and development process of RobMSN middleware.%根据无线传感网络中节点扮演角色的多样性及角色职责的差异,提出无线传感网络角色映射框架模型.在此角色映射框架基础上,设计并实现基于角色的无线传感网络中间件RobMSN.从语义和规约的形式化角度定义了角色映射的规则约束,系统地解决了角色映射抽象的语义冲突问题,使得角色映射的上下文充分地体现在中间件的角色规约中.利用RobMSN把应用程序映射为节点在网络中具体所承担的角色,解决了无线传感网络中间件的跨平台要求和应用服务的动态性问题.最后,以一个应用开发实例来说明RobMSN中间件的设计和开发流程.
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