A MEMS-based magnetic field sensor is a small-scale microelectromechanical (MEMS) device for detecting and measuring magnetic fields. Many of these operate by detecting effects of the Lorentz force: a change in voltage or resonant frequency may be measured electronically, or a mechanical displacement may be measured optically. Compensation for temperature effects is necessary. Such instruments have medical and biomedical applications.
The Hall effect sensor can be used to measure fuel level in a fuel tank
The magnetic sensor is based on Hall effect. The effect is based on the interaction between moving electric carriers and an external magnetic field. In metal, these carriers are electrons. When an electron moves through a magnetic field, upon it acts a sideways force
Magnetic sensors have a detection speed of up to 20,000 measurements per second. Since they work on a contactless principle and do not contain any moving parts like ball bearings, for example, they are maintenance- and wear-free, easy to handle and install, and are completely unaffected by soiling. This makes them absolutely indispensable in many applications, guarantees long service times and allows them to be used reliably in rail applications or in commercial vehicles.
Depending on the application, magnetic sensors offer a practical alternative to encoders or inductive sensors.
A MEMS-based magnetic field sensor is a small-scale microelectromechanical (MEMS) device for detecting and measuring magnetic fields.
A MEMS-based magnetic field sensor is small in size, and so it can be placed close to the measurement location and thereby achieves higher spatial resolution. Additionally, constructing a MEMS magnetic field sensor does not involve the microfabrication of magnetic material. Therefore, the cost of the sensor can be greatly reduced. Integration of MEMS sensor and microelectronics can further reduce the size of the entire magnetic field sensing system.
Detection of speed and direction of rotation of rapidly rotating gear wheels
Very little maintenance needed because they are wear-free
Special robust versions available
Magnetic proximity switches
Reliable and wear-free object detection
Large sensing distances of up to 60 mm
Their functionality is not affected by soiling or humidity
Magnetic cylinder sensors
Detection of final positions in all conventional cylinders
Different versions and versatile fitting accessories for maximum flexibility
Contactless and completely wear-free
Magnetic angle sensors
Absolute position detection up to 360° rotary angle
High resolution up to 0.09°
Linearized analog output signal
Wear-free and dirt tolerant
Monitoring of rotational speed
Detection of final cylinder positions
Indirect fill level detection
Measuring and switching magnetic sensors, optionally in full-metal or plastic configurations, and sensor platforms individually designed for demanding industries such as railway vehicles and materials handling.
Magnetic sensor components for high performance OEM applications, as well as rugged magnetic modules for applications where a turnkey solution is required
Magnetometers are used in millions of cell phones and tablets, due to their exceptional noise, wide dynamic range, and low power consumption.