Enterprise information systems store great amount of information, which describes details of the objects in Internet of things. Due to these complex systems lack of uniform interface, users could hardly get the valuable information. We propose the UAI-IOT framework, which provides a method of uniform interfaces to actively acquire information from heterogeneous enterprise systems. To be compatible with these systems, the framework obtains information from log files and transformed the log information into semantic events, which could be acquired by any user through the interfaces of information service. Besides, integrating UAI-IOT framework and RNS would make contribution to share information among organizations. We also introduce a use case and make a comprehensive discussion.