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...
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 Compass Module - HMC6352 - SEN-07915 - SparkFun Electronics to make a "driveway alarm" which warns us of visitors.
jremington:
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 Compass Module - HMC6352 - SEN-07915 - SparkFun Electronics 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.
@leandrogs have you managed to complete your project? is it functional? I am looking for something similar