SmartIPv6Sensor
Smart IPv6 Sensor
Description
The sensor platform integrates environmental sensors such as temperature, relative humidity, motion detection, pressure, sound, light and air quality. The device embeds a rechargeable coin cell battery of 50mAh to ensure several days of operation during poor light condition, and a small photovoltaic cell to harvest solar energy. An USB interface is provided to recharge a depleted battery and configure the device for the first usage. Based on the popular open source Contiki operating system for the Internet of Things, the software has been investigated and customized to allow more control of the system for the reduction of power consumption (Optimized Neighbor Discovery Protocol, RFC6755 - Improved Low Power Listening).
The sensor is configured to communicate to a border-router through which the sensor can join an IPv6 network and start communicating with other devices in the network. The sensor then behaves like a mini-server with its own IPv6 address and provides RESTful web services accessed by the user through the Constrained Application Protocol (CoAP), an HTTP-like protocol for low power and lossy network. Finally the device communicate at the application layer over the OMA LwM2M protocol.
The device can last about 50 days in the dark on a battery of 50mAh and a light condition of 1000 lux in average is require to sustain the mean power consumption of the device while reporting sensors measurement.
