Analysis on the advantages and disadvantages to sense vehicle detector

in the intelligent parking industry, vehicle detector believes everyone not unfamiliar, on the basis of different application technology, can be divided into the annular coil vehicle detector, ultrasonic sensing vehicle detector, radar detector, video vehicle detection vehicle detector, etc.

this, when the annular coil vehicle detector is used most.It through the driveway buried under the ground sense coil, vehicles will cause the change of the coil magnetic field, a vehicle detector based on magnetic field changes can calculate the parameters such as vehicle flow, speed, vehicle length.

in the intelligent parking lot system, the vehicle detector mainly or trigger effect, if there is a vehicle to checkout automobile road.For vehicle detector technology mature, easy to install, low cost, so widely used in the parking lot in the industry.

but the sense of vehicle detector also has the insufficient place, mainly displays in: 1. The ground sense coil need to be buried under the driveway, install the vehicle detector, so need to cut the road surface, this will cause the traffic block.2. Because it is a need to cut the road surface, kerf width will damage the pavement structure, road surface damage.3. Ground sense coil easily affected by environment, such as frozen, roadbed subsidence, salinity, etc;4. When the traffic is more, the car distance less than 3 meters, precision will decline, cannot guarantee the accuracy.(by: http://www.nthuanli.cn.