Project: Building Occupancy

This project sought to develop a low-cost, non-intrusive, and highly-scalable building occupancy sensor capable of detecting bi-directional motion at accessways.This data is useful for the efficient utilization of building resources, and allows building operations to operate proactively rather than reactively. More data, from affordable and reliable sensors, is critical for characterizing building efficiency. Counts provided are the summed total of transits within the last 10 minutes.

This project seeks to accomplish these goals by setting the stage for 4G-LTE based door-mounted sensor networks to estimate the occupancy flux of a building. Data from the first prototype, Polaris, is found here.

Selected Sensor:

Sensor Data

This sensor package uses a set of IR Time of Flight sensors to detect directional motion by comparing the falling edge times of sensor readings. This method allows for a relatively simple method of people counting, that still provides the sub-5% error we are looking for. Similar to the IAQ device, Battery and Input Voltage are monitored by the Boron404X.

The input boxes below the charts allow you to set how many days into the past you want to see sensor data from. The default is 10 days.

Counts In

Counts Out