Magnetic field detection in three-dimensional space previously required the use of multiple magnetic sensors in combination, but the new sensor makes 3D magnetic field detection possible using a single device, enabling the design of products that are more compact and lower in cost.
An anisotropic magneto-resistance (AMR) sensor is a type of magnetic sensor that utilises a property such that the magnetic resistance value changes according to the strength of a magnetic field in a specific direction.
These kinds of sensors are mainly used in applications such as mobile phones and notebook PCs, open/close detection in refrigerators and doors, and rotation detection in smart meters.
In response to feedback from customers indicating a need for AMR sensors with 3D sensing capabilities, Murata embarked in 2013 on the development of such devices, using magnetic sensing technology and expertise acquired from NEC Corporation.