SenseIt has been designed to be a Dynamic Wireless Network of Sensors to monitor potentially unsafe and hazardous environmental conditions.
The most important aspect of a Dynamic Sensing Network is the Sensors. This section introduces and discusses the Design,Implementation and Testing of the Sensors used in our SenseIt Devices, and my contribution to the Project as a whole.
For this project I participated by providing an "Operating System" to give a strong base for the embedded device and provide the connections bringing the teams together. Our project contained three key components; the sensing circuits, the digitisation and transmission and finally storage and processing. With each of the three components there was a need for efficient communication.
The GUI is the only thing that stands between the human and the machine. It better be pleasant. From the collected data received by the server to the pretty display, there is a careful study awaiting you!
To have a Dynamic Wireless Network, we need to have a network ! In this section my work on our embedded network is presented and analysed, from the first attempts carried out to what was included in the final version of SenseIt, and why.
As shown in recent events, such as the BP oil spill of the coast of the USA and the nuclear contamination around Fukushima, Japan, there is a need for fast response sensing of pollution to assist in the control and clean up effort.
However, due to the nature of these events it is not always safe for Humans to be in contact with certain pollutants or to be within close proximity to the disaster struck zone. Furthermore these events are unpredictable and therefor a Sensor Network cannot always be in place beforehand.
What is required in these situations is a rapid response,adaptable network of sensors that are dynamic enough for any situation to be monitored accurately.
The System will be set up as a wireless network of Hubs and Nodes. Each Node is connected up to a variety of different sensors depending on the environment that they are to be used.
For example, Nodes could be set up to take measurements for the Weather, Gas Leaks, Radioactive Explosions,etc. Each node will periodically send the data to a Hub which can then collect the data and transmit it to a PC to monitor the Data in real time.
GPS chips on each Hub could be used to determine the exact location of the area being monitored and through triangulation the precise location for each node can be calculated as well.
These collections of Hubs and Nodes could be dropped onto the target area via a UAV to minimize the risk of exposure.