Low cost zigbee traffic magnetic sensor vehicle detector for car counting system
WVD -130x wirelss vehicle detector is designed to bury in ground,whose installation time is less than 5 minutes,which minimized the lane closure time largely.With magnetic detecting technology,the accuracy goes up to 98%.what's more,sensors embeded in the road detect vehicle flow,speed,existance ,direction and lane occupancy,which makes it flexible to integrate with various systems.
The WAP-348x wireless access point acts as a gate way between the user systems and wireless sensor network, which is formed among the WVD sensors installed in the road surface. WAP-348x is used to gather traffic information collected by WVDs for intelligent transportation system such as intelligent traffic light control, traffic flow, traffic guiding and electronic police. It transmits information to application platform; as well as receives commands from application platform and deliver to WVDs. WAP-348x is also responsible for the wireless sensor network management. It also run some algorithm and output controlling signal to applicable systems, besides data collection and transmission.
By capture the tiny change of magnetism caused by the passing vehicle, Wireless Vehicle Detector (WVD) will send all of information on it to the access point, and then the access point aggregates the data from individual sensors and can report key traffic parameters including the vehicle velocity, length, type and occupy rate to the user systems through RS-232/485, Internet, GPRS, etc.
(1) Adaptive traffic signal controlling
Wireless vehicle detector and transmit real-time data on all directions, and Wireless Access Point get the data via antenna. The traffic controller systems get and analyses the traffic flow data, and calculate the best traffic scheme, controlling traffic lights release time. On improving transportation efficiency and saving drivers' time.(2)Traffic flow detection system
Detector is installed in specified road, detect every vehicle pass by, and transmit the real-time information to traffic management systems via wireless access points. The user systems can calculate the traffic flows by analyzing the data.(3)Red light and speed enforcement
Based on magnetic detection and wireless sensor networks, WVD sensors acquire the dynamic traffic flow information and send the information to Access Point installed nearby. User systems receive and process the information from Access Point, and issue instructions to electronic cameras.
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