HiveProtocol: A Communication Protocol Used to Centralize Sensor Data

Sammanfattning: The area of Internet of Things (IoT) is a rapidly growing field within computer science and the ability to effortlessly gather data using sensor networks is increasing in demand. Collection of sensor data can be cumbersome since the sensors by themselves often are unable to communicate with the outside world through the Internet. To facilitate the need to interact with sensor nodes a transport protocol was developed to enable data, collected by sensors, to be propagated to a computer with network capabilities. Our protocol has the ability to send messages over an RS-485 network, with tests showing that all transmitted packets were received at the intended destination, however, a much lower bandwidth usage than desired was observed. Comparing the results of different testing scenarios indicates that, in order to mitigate collisions, a lot of the transmission time is wasted ensuring that the physical cable is not being used by someone else. The developed protocol is considered good enough for demonstrating proof of concept and to be used as a solid foundation for future development.