Abstract
Antenna and base-station diversity have been applied to a wireless sensor network for the monitoring of live-stock. A field trial has been described and the advantage to be gained in a practical environment has been assessed.
Highlights
Antenna and base-station diversity have been applied to a wireless sensor network for the monitoring of livestock
A wireless sensor network (WSN) is a collection of spatially dispersed sensors that communicate via a set of wireless transceivers [1]
The time-series of signal power received from base-station 1 (BS1) and base-station 2 (BS2) are shown in Figures 7(a), (b), (c) and (d) and Figures 8(a), (b), (c) and (d), respectively. (a) and (b) represent data originating from antenna 1 (A1) and antenna 2 (A2) mounted on collar 1 (C1). (c) and (d) represent data originating from A1 and A2 mounted on C2
Summary
A wireless sensor network (WSN) is a collection of spatially dispersed sensors that communicate via a set of wireless transceivers [1]. Recent advances in micro-electromechanical systems, transceiver miniaturisation and transducer technology have made WSNs flexible, scalable and commercially viable. They have found wide and diverse application in many areas including military [2], industrial [3], commercial [4] and domestic [5]. We apply antenna and base-station diversity to star-configured WSNs for animal husbandry in the dairy and beef industries [16]. Line-of-sight (LOS) paths between the sensor node and base-station might become obscured by other animals This fading mechanism is likely to be especially important in the context of animals with a herding instinct on open grassland. The principal objective of the work reported here is the experimental assessment of the practical diversity improvement that can be expected in this little considered, but commercially important, application
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