Wheel Speed Sensors / Vehicle Speed Sensors

[chitu]

Hi EveryBody,

I am Looking For a Wheel Speed Sesnors / Vehicle Speed Sensors that may help in calculating Speed and Distance for my application in absence of GPS Data. Any suggestions on what kind of Sensors I should go with . Any body having prior experience in Anit-Lock Brake System who could guide or share technical Knoweledge/Docs in the same. I am New to the field of Automobiles , Sensors ... Some of the questions I have are .


1. If I go for Magnetic Sensors , they do not give the Vehicle Slip So how to accomadate.
2.Radar Sensors Do give the True Ground Speed but they are pretty Costly .
(Any suggestion on RADAR Sensors that are costeffective )
3. If I have to choose among Magnetic Sensors , which would be better .
1. MagnetoResistive
2. Halls / Differential Halls
3. Inductive



Thanks & Regards
Chitu