@techreport{oai:ipsj.ixsq.nii.ac.jp:00183089, author = {Tin, Petrovic and Kazuya, Echigo and Hiroyuki, Morikawa and Tin, Petrovic and Kazuya, Echigo and Hiroyuki, Morikawa}, issue = {1}, month = {Aug}, note = {Electrical waste from using lights, AC and other plugged in devices while no one is in a room is noted as the biggest potential way to reduce electric consumption without affecting the end user. To achieve this, simple and cheap way to detect presence in a room is desirable. To this end we look into new ways to count the number of people in a space by looking at the power consumption of a WiFi router. We analyse if a router's power consumption can be correlated to the number of people in a room by setting two assumptions. First that an increased number of devices will results in a higher level of electrical consumption in a WiFi router. Second, that the aggregated network traffic from users is a stable and a good feature to use in prediction. We care out experiments in real world scenarios and showcase that it is possible to determine whether or not a room is occupied by looking at a WiFi's power consumption., Electrical waste from using lights, AC and other plugged in devices while no one is in a room is noted as the biggest potential way to reduce electric consumption without affecting the end user. To achieve this, simple and cheap way to detect presence in a room is desirable. To this end we look into new ways to count the number of people in a space by looking at the power consumption of a WiFi router. We analyse if a router's power consumption can be correlated to the number of people in a room by setting two assumptions. First that an increased number of devices will results in a higher level of electrical consumption in a WiFi router. Second, that the aggregated network traffic from users is a stable and a good feature to use in prediction. We care out experiments in real world scenarios and showcase that it is possible to determine whether or not a room is occupied by looking at a WiFi's power consumption.}, title = {Analysis of WiFi Router's Electric Power Consumption towards Determining Presence in an Office Environment}, year = {2017} }