A Web Services Description Language-Based Description Model of Internet of Things Services

摘要

The characteristics of heterogeneity and dynamic changes in the environment of internet of things (IOT) put forward higher requirements for the description of IOT services, and the traditional description model for Web services of WSDL cannot meet the description requirements of IOT services better. To solve these problems above, the physical objects and service contents of IOT services are extended and a description meta-model of IOT services is put forward based on the traditional WSDL model. The physical objects of IOT services have been extended through the description of the roles and their attributes involved in IOT services, and the description contents of IOT services have also been extended through the description of service acquisition methods, service running prerequisites, service inputs and outputs, sub processes contained in IOT services and their workflow, service support and so on. Finally, through the formal description language named OWLDL, the implementation of our model is discussed and the inpatient service in the IOT environment of hospital is taken as an example to verify the feasibility and effectiveness of our model.