Neyolight
Full Member level 5
Hello Everyone
I am currently studying the inductive loop detectors used in the traffic control department. I believe the data from the detectors is highly unreliable and noisy. A lot of research has been going on on the 'Fault detecting algorithm' and other means to improve the accuracy of an ILD(Inductive Loop Detector).
My question is, How do these ILD detect a fast moving vehicle. Lets say a vehicle going at 100 km/hr on a motorway. It would go over a normal (4m x 4m or even smaller) inductive loop within FRACTION of seconds.
IDL works in the following way : ILD have a magnetic field around them---> incoming vehicle disturbers the magnetic field --> the ILD induces eddy currents into the conductor part of the vehicle --> thereby reducing its own inductance -->if this decrease in inductance crosses a threshold value, a call is made to the electronic unit and the vehicle presence is identified.
This is quite a LONG process. I fail to understand how all this can be done within FRACTION of seconds. Surely the conductor(vehicle) needs to be in the magnetic field (over loop) for 'some' time to be able to disturb the magnetic field PROPERLY. :roll:
PLEASE PLEASE PLEASEEEEEEEE Can someone give me some tips on how ILD works in high speed environment ! Thanks !
Neyolight
I am currently studying the inductive loop detectors used in the traffic control department. I believe the data from the detectors is highly unreliable and noisy. A lot of research has been going on on the 'Fault detecting algorithm' and other means to improve the accuracy of an ILD(Inductive Loop Detector).
My question is, How do these ILD detect a fast moving vehicle. Lets say a vehicle going at 100 km/hr on a motorway. It would go over a normal (4m x 4m or even smaller) inductive loop within FRACTION of seconds.
IDL works in the following way : ILD have a magnetic field around them---> incoming vehicle disturbers the magnetic field --> the ILD induces eddy currents into the conductor part of the vehicle --> thereby reducing its own inductance -->if this decrease in inductance crosses a threshold value, a call is made to the electronic unit and the vehicle presence is identified.
This is quite a LONG process. I fail to understand how all this can be done within FRACTION of seconds. Surely the conductor(vehicle) needs to be in the magnetic field (over loop) for 'some' time to be able to disturb the magnetic field PROPERLY. :roll:
PLEASE PLEASE PLEASEEEEEEEE Can someone give me some tips on how ILD works in high speed environment ! Thanks !
Neyolight