VisualSense 10.0.1 - Modeling of Wireless Sensor Networks Visual editor and simulator for wireless sensor network systems. Documentation Authors Copyright To start immediately by creating a wireless sensor networks model, select File, New, Graph Editor from the menu bar. Select Help from the Help menu for instructions on creating a model.

Below are simple demonstrations of this modeler (see also the complete list of demos):

• Wireless Sound Detection.
  This example models a sound localization problem. A single sound source moves through a field of sound sensors. The sound sensors detect the sound and communicate via a radio channel to a sensor fusion component that localizes the sound by triangulation.
• Small World.
  This example illustrates a phenomenon where ad hoc networks achieve connectivity with fewer hops on average with a network that is less reliable but where ranges are larger than with a network that is more reliable but ranges are shorter.
• SmartParking
  Sensors placed in a parking lot can be used to collect data (including which parking spot is taken, how long a car has parked on a spot). The parking lot can process the collected data and provide some services to clients to guide their parking. This demo illustrates these ideas. When a sensor detects a car arriving or leaving a spot, it sends an update to the server of the parking lot, which collects and processes sensor updates to provide information to parking clients. The "car model" component models when a car arrives or leaves, and where to park based on the information the server provides. It is a abstraction for all the cars dynamics during a specific time.
• Evader and Pursuer.
  This model shows an "evader" and a "pursuer" moving through a sensor network. The "evader" emits sounds that are detected by the sensor nodes, and the sensor nodes relay information to the pursuer. Running the model shows the evader moving at random and the pursuer seeking to track it based on the information from the sensors.
• Circular Range Channel.
  This simple example illustrates a transmitter with a battery model, where its transmission range decreases (randomly) over time. In this case, a simple channel model with a circular range is used, and the receiver passes in and out of range.
• Power Loss Channel.
  This model shows a transmitter and a receiver where the receiver moves as the model executes and the receive power density is plotted over time. The channel is a PowerLossChannel with a limited range. When the receiver is in range, the power depends on the distance to the transmitter, according to a formula that is a parameter in the model.
• Transmit Antenna Gain.
  This model illustrates the modeling of transmit antenna gain using a property transformer model that is registered with the channel. In this model, the receiver moves in a circular pattern around the transmitter and measures and plots the received power. The transmitter has an 8-element phased-array antenna with steering. See also Antenna Pattern (Receiver) and Antenna Gain Calculation.
• Collisions.
  This model illustrates the modeling of collisions, where multiple transmitters send messages with non-zero duration, and collisions can result in loss of one or both messages, depending on the received power levels.
• Terrain Model.
  This model illustrates simple terrain effects, where a TerrainModel object can block transmission if the transmission path crosses its geometric shape.
• Link Visualizer.
  This model is a version of Terrain Model that shows the capabilities of LinkVisualizer, which displays links between communicating nodes whenever a transmission is made.
• Intersections.
  A simulation of a set of automobile intersections that use wireless to communicate between traffic signals. See also the Synchronous/Reactive (SR) domain Traffic Light and Traffic Light Wireless Deployment.
• Zigbee.
  A simulation of a Zigbee radio.

This wireless sensor network modeler is built using Ptolemy II, which is a software framework developed as part of the Ptolemy project at the University of California at Berkeley. See the Ptolemy Project web page for more information.