Re: What Microcontroller can be used with inductive loop sensors
- From: Thad Smith <ThadSmith@xxxxxxx>
- Date: Tue, 29 Apr 2008 22:42:13 -0600
simon86 wrote:
Hi,
I am currently working on a university project that concerns the
functionality of an inductive loop sensor. While I understand its basic
functionality I am unsure how to use it with microcontroller.
We will be using the sensor to detect vehicles that are parked in a
parking spot.
There are standard detectors that put out a logic signal, usually grounding an output line when a vehicle is detected. They are used as input for traffic light controllers. My understanding of them, though, is that the standard design is dynamic: they average the inductance over time to set a threshold. Typically they will "tune out" cars that set over them for many minutes. That might make the standard units unworkable if you want to detect when a vehicle leaves its spot.
--
Thad
.
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