Abstract—With the development and extensive application of
Wireless Sensor Networks(WSN) technology, Wise medical
Treatment has entered the ordinary household. A patient
positioning System is designed based on WSN in this paper.
Distance Vector-Hop (DV-Hop) algorithm is used by through
analyzing the system working environment, and some
improvement has made on the basis of it’s error analysis. There
are two improved aspects. The anchor nodes are filtered. A
certain weight value is added in coordinate calculation. Finally,
the influence factors of positioning accuracy are studied by the
simulation.