2 results about "Grid based" patented technology

The invention discloses a grid based wireless sensor network fuzzy-locating method in the technical field of wireless sensor network application. The grid based wireless sensor network fuzzy-locating method includes: transmitting information to a node to be located by anchor nodes, receiving information and build an neighbor anchor node chain table through the node to be located; dividing an area where the sensor network is located into grids in assigned number; computing membership degree of the node to be located to each grid and arranging the node to be located in descending order according to the membership degree; computing average values of sequence numbers of all the grids comprising auxiliary locating points by setting peaks of the grids as the auxiliary locating points to form a sequence (QY); selecting a former first assigning item from the (QY) and setting the centroid of the auxiliary locating point of the corresponding grid as roughly evaluated coordinates of the node to be located; clustering the auxiliary locating points corresponding to the former second assigning item in the (QY) by setting the roughly evaluated coordinates as the initial clustering center and obtaining the coordinates of the node to be located. The grid based wireless sensor network fuzzy-locating method is capable of computing accurate evaluated coordinates of the node to be located, complete and excellent in locating performance.