Magnetic localization by means of a triaxial configuration of TMR sensors

In the Industrial, medical and smart city sectors, it is often also very important to know in real time the position of mobile sensors so that the data they produce can be correlated to the motion data or to specific sensor positions in the reference scenario. For these reasons, an issue related to the development of short-range tracking systems arises. Typically, these systems cannot be developed adopting the usual GPS–based localization technologies or radio signals because indoor scenarios, the required accuracy and costs become insurmountable obstacles for these technologies. For these reasons, we are witnessing a rapid development of localization methods and systems explicitly designed for small-scale applications. The localization systems can be divided into two categories. The anchor–free that do not require references in fixed and known positions, and anchor–based ones that use a system of anchors with respect to which to calculate the positions of the sensors in the threedimensional space. This work, propose the development and the first experimental characterization of a new anchor–based short-range magnetic localization system. The performances are compared with a previously developed system based on a different architectures.