Abstract:
Disclosed is a sensor node deployment method for a sensor network. According to embodiments of the present invention, the convenience of use and the utilization of a sensor network system are improved by determining the optimum position of a sensor node by automatically analyzing a system feature element, a human element, and an environmental element affecting a sensor node deployment. The present invention is applied in an unmanned monitoring boundary field about a main facility or a weak monitoring area, which is difficult for a human to approach, by improving the technical reliability of a wireless sensor network by arranging a sensor node in a position with the maximum coverage in a cell. [Reference numerals] (140) Additionally arrange a sensor node; (AA) Start; (BB,DD,EE) No; (CC,FF,GG) Yes; (HH) End; (S10) Collect information about the number(Ns) of the sensor nodes and area; (S100) Calculate a maximum value(Cmax) of a sensor coverage; (S110) C_max > Threshold(T_c)?; (S120) Confirm the position of the sensor node at an x-position; (S130) Position control area ends?; (S20) Calculate a sensor detecting distance by applying a weight; (S30) Basic cell quantity(Nc) TKSCNF; (S50) Control the size of cells; (S60) Grid-arrange the sensor node according to the controlled cell; (S70) Grid-arrange the sensor node according to a basic cell gap; (S80) Set a position control area of the sensor node in the cell; (S90) Calculate the sensor coverage while moving the sensor node in the position control area
Abstract:
PURPOSE: An apparatus for estimation the number of targets in a sensor network environment for surveillance and reconnaissance is provided to trace track through a detected target information. CONSTITUTION: An apparatus receives a location identification information of a target from a cluster head(S201). The apparatus classifies the identification information of the target(S203). The apparatus establishes an initial group value for the number estimation of the target(S205). The apparatus calculates the center point, and an inter-center point Euclidean distance(S207). If the Euclidean distance of two groups is smaller than the threshold value, the apparatus annexes two group values(S209,S211).