Hierold, MartinMartinHieroldRipperger, SimonSimonRippergerJosic, DarijaDarijaJosicMayer, FriederFriederMayerWeigel, RobertRobertWeigelKölpin, AlexanderAlexanderKölpin2020-07-062020-07-062015-01IEEE Topical Conference on Wireless Sensors and Sensor Networks, WiSNet: 7127416 (2015-01)http://hdl.handle.net/11420/6624In this paper a compact low weight wireless sensor node for proximity detection is presented. The energy-efficient system design enables an operation time of more than 9 days at a total weight of the tag of less than 2 g. Test measurements in a colony of bats proof the applicability of the system for encounter detection of individual bats based on received signal strength measurements.enConference Paper10.1109/WISNET.2015.7127416Other