User's Manual

Rev S-00001-20051010-1 Page 13 of 15
5 Configuration and Integration
This section does not supplement the VDS240 Wireless Vehicle Detection System Users Guide
in anyway. It should be used as a brief introduction the VDS240 detection system, and provide
the simplest mean of integrating the sensor with an Access Point.
Overview
The only way to communicate, and therefore configure the sensor, is via an Access Point
(AP240-E/S). Sensor configuration commands can be issued through the access point using the
VDS240 API (application programming interface), or the Sensys Traffic Dot application.
An Example
Three sensors where just installed, accompanied with an access point. The site has determined
that the best channel for operation is 7, and the sensors will support a lane and speed count
application. From the packing slip, the channel and sensor ID are known. Two of the sensors are
already operating on channel 7, and one is configured for channel 0. Follow the steps below to
configure the system.
i. Take not of distances between sensors, and the order along the axis of traffic flow.
ii. Set the AP240’s channel to 7, and verify that the two sensors begin communication.
iii. Change the channel of the access point to channel 0 and verify that the third sensor
appears.
iv. Issue a “Change RF Channel” to the sensor, and set the new channel to seven.
v. Verify that the dot is no longer communication on channel 0.
vi. Change the access points channel back to 7.
vii. When the three dots appear, enter the distances and orientations of the sensors into
the count and speed applications.
viii. Run the applications and enjoy.