This week, we presented our design review and are currently awaiting feedback. We did not make any changes to the system, only more detailed analyses of the frontend and hardware.
Through our preparation for the design review and report, we did not discover any new significant risks yet. Overall, we are just trying to properly manage costs and size for the hardware in order to support the 55 hour battery life as well as making sure software structure can hold up to the number of tables it has to support. Currently, our biggest power consumption device is the PIR sensor, which will, after 55 hrs, consume 85% of the available power consumption. As a contingency plan in case the battery does not last, we are planning to lower the active time of the PIR sensor, such that the thermal sensor does the initial occupancy sensing and the PIR sensor is then used to confirm occupancy.