![\"simx\"](\"https:\/\/sensorweb.engr.uga.edu\/wp-content\/uploads\/2016\/06\/simx-300x182.png\")
<\/p>\nIt is well known that designing, testing and debugging sensor networks are extremely hard. It is mainly due to limited resources and distributed natures of sensor networks. In a lab environment, it is difficult and tedious to try various network configurations and simulate various challenging environment factors. Thereafter, the sensor network community has longed for a good sensor network simulation tool allowing the philosophy of WYSIWYG: What You See Is What You Get. We present the design and evaluation of a visualized network manipulation tool, called SimX. The SimX includes the following features: (1) topology manipulation, which allows a simple mouse drag on the virtual network node to actually change the physical network topology and the link qualities; (2) timing control, which allows a user to control a simulation to run faster or slower, even to pause the simulation; (3) variable watch and conditional breakpoints, which allow a user to watch variable value changes of all network nodes concurrently and set conditional breakpoints; (4) sensor input control, which allows a user to simulate different sensor data inputs and sampling rates. Besides supporting those traditional evaluation criteria, such as throughput, energy efficiency and delivery ratio, the SimX also supports a holistic evaluation methodology. The holistic evaluation methodology evaluates how well the holistic high-level spatial and temporal environmental changes have been recorded, not only those low level engineering criteria.<\/p>\n
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SimX is an add-on tool for simulation experiments, but also extensions for Tossim bunched with Tinyos 2.x. This tool changes traditional development style based on Tossim. SimX support critical features: Simulation Speed Control, Topology Manipulation, Variable Watching, Date Reading Input and Holistic Evaluation.<\/p>\n
The features of this research include:<\/p>\n