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Author Topic: Magnetic sensor to car detection  (Read 330 times)
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Brazil
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Hi! I am doing a project in college that involves some kind sensor to detect vehicles, like in a parking lot. I was thinking about a magnetic sensor based on magnetoresistors to detect variations on earth's magnetic field or maybe something using inductive loops. Someone could help me with this indicating me some way to make this sensor or point to somewhere I can buy a few...
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Any magnetometer suitable for an electronic compass (i.e. sensitive enough to easily detect the Earth's magnetic field) will detect vehicles a few meters distant. The vehicle will introduce easily detectable variations in the direction and magnitude of the local field. I used this magnetometer https://www.sparkfun.com/products/7915 to make a "driveway alarm" which warns us of visitors.
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"It seems to run on some form of electricity"

Brazil
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Any magnetometer suitable for an electronic compass (i.e. sensitive enough to easily detect the Earth's magnetic field) will detect vehicles a few meters distant. The vehicle will introduce easily detectable variations in the direction and magnitude of the local field. I used this magnetometer https://www.sparkfun.com/products/7915 to make a "driveway alarm" which warns us of visitors.

So, i can "easily" use this magnetometer to detect if a car is over the sensor? My intention is to use arduino just to build a prototype so I can develop my final product.
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