"Toshihiro Osaragi,Natsumi Yoshiyuki,Maki Kishimoto,Takuya Oki,Jun Iyama,Yoshihiro Fukushima","Estimation of the Nnmber of Walking People in Staircases Using Infrared Human Detection Sensors",,"Journal of Architecture and Planning (Transactions of AIJ)","Architectural Institute of Japan","Vol. 87","No. 799","pp. 1699-1707",2022,Sept.