What is a magnetic sensor？Where to buy a magnetic parking sensor?

Magnetic sensors are sensors used to measure the magnitude and direction of magnetic fields.

1. Hall sensor
A sensor that uses the Hall effect to measure the magnetic flux density and outputs a voltage proportional to the magnetic flux density. Easy to use, it is mainly used for non-contact switching applications such as opening and closing detection of objects such as doors and laptop computers.

2. MR sensor
Magneto Resistance sensor is also called magnetoresistive effect sensor, which uses the change of object resistance due to magnetic field to measure the size of geomagnetic field.

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It is Higher and consumes less power than Hall sensors, so it is a widely used magnetic sensor. In addition to it being used for geomagnetic detection, such as an electronic compass, it can also be used for motor rotation and positioning.

3. MI sensor
MI (Magneto Impedance) sensor is a next-generation magnetic sensor, which uses a special amorphous wire and has a magneto resistive effect.

Its sensitivity is more than 10,000 times higher than that of Hall sensors, and it can measure small changes in geomagnetism with high precision.

It is suitable for azimuth detection (electronic compass) with ultra-low power consumption, as well as high-sensitivity features such as indoor positioning and metal foreign object detection.

4. Geomagnetic sensor
There is a magnetic field around the earth called geomagnetism.

A geomagnetic field sensor is a sensor that detects the geomagnetic field, also it called an electronic compass.

Geomagnetic field sensors detect the direction of the earth’s magnetic field.

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The geomagnetic field sensor adopts the form of two axes of X and Y, and adds three axes of Z to measure the magnetic force value in each direction.

If it is not considering tilt, such as a simple compass, only the values for the X and Y axes are used. When it is considering tilt, the 3-axis value of the geomagnetic sensor should be combined with the acceleration sensor to achieve the correct correction.

When the earth’s magnetic induction element rotates horizontally, the center of the circle in the output distribution diagram will not be affected by the surrounding magnetic field.

However, in fact, the center will move due to the influence of the ambient magnetic field, so adjustment is required to move the center of the circle to zero.

The North Pole output by the Earth’s magnetic field sensor is called Magnetic North (the North Pole is slightly off). Using the above formula to calculate the angle of magnetic north, the direction can be easily determined.

 

What is a magnetic parking sensor?

Magnetometers can be wired or wireless. A geomagnetic vehicle detector is a sensor based on the magnetic flux density to detect the changes in the geomagnetic field and the surrounding magnetic environment. With this feature, it can detect the surrounding magnetic body. The movement of the magnet located at the height of the furthest vehicle from the ground can be detected as the change from the sensor installed on the road.

Working principle of magnetic parking sensor

Wireless magnetic sensors are designed for on-street and off-street parking devices. When the vehicle is parked on top of the magnetic parking sensor, the sensor responds to changes in the Earth’s magnetic field and transmits the parking availability information to the parking management system in real-time. The smart parking system displays the number of available parking spaces on an LED screen.

Working principle of magnetic parking sensor

Structure of magnetic parking sensor
The sensors are installed on the road surface of the parking space. In order to resist the impact of the vehicle, our magnetic parking sensors are made of an impact-resistant shell with thickness and an external structure to ensure that the vehicle will not break even if it is run over. The bearing weight is up to 10 tons. The sensor is equipped with geomagnetic detection components, a radar detector, a processing CPU, a radio substrate, and a built-in battery to achieve complete wireless connection and miniaturization. Eliminates the need to route power for data acquisition and makes sensor installation easier.

Real-Time Data Collection & Management

The wireless LoRaWAN parking space sensors installed in each parking spot generate data on space occupancy in real time. This data is available both to operators and parkers, via digital signage or mobile applications, providing opportunities for easy way-finding, mobile-enabled payments and also enhanced policies, thanks to robust data analytics. Contact us about the best smart parking sensor kit.

If you’re interested in developing or integrating with a smart parking system, speak to our development expert today. Our smart parking lot detection sensor will give reliable data to your system.

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