preview

Nt1310 Unit 1

Better Essays

The high level requirements for the network are to: measure and record sensor data and process data to actuate the environment. Given these requirements, this section will discuss how these requirements were met as well as provide some system metrics. In order to implement the data measurement, storage, and actuation, communication paths must be set up between the sensors, actuators, processor, and storage. The communication paths use communication standards such at HTTP and Zigbee and custom protocols such as the protocol between the Gateway and Sensor Modules. The primary goal of these protocols is reliable communication. Each protocol uses acknowledgements to ensure the validity of the data. Using these protocols approximately 3.3KBytes are sent from the Sensor nodes to the Gateway per hour and approximately 1.3KBytes are sent from the Gateway and the Sensor nodes. This is a low date rate system designed to save power. Although the system network usually functions well there are noise levels with …show more content…

The Gateway will provide the interface between the Sensor Network and the Internet. Each Gateway will then communicate with a central router that is connected to the Internet. To ensure that the Gateway’s WiFi signal is able to reach the central router a directional antenna and amplifier can be used to increase the gain of the transmitted signal. Both the Sensor Modules and Gateway should be solar powered with a battery back up. The diagram below outlines the flow of data in the network. In this diagram the circles represent the Sensor Modules, the squares represent the Gateways, the triangle represents an Internet WiFi Hotspot, and each color represents a separate network. Separate Zigbee networks are created around each Gateway. Each Zigbee network will use different mesh network id and channel number. Each of the Gateways will then communicate with the Internet WiFi

Get Access