title: Fusion of inertial and magnetic sensors for 3D position and orientation estimation.
abstract: This paper presents a new method for 3D position and orientation estimation based on the magnetic field generated by a single coil and the fusion of low power magnetometers and inertial sensors. The fixed spatial relationship between the sensors is exploited to solve the ambiguity problem that occurs when only a single coil is employed. In this context a new positioning algorithm is developed and verified by simulations. Using a single coil instead of three coils as common in conventional magnetic field based systems brings a benefit both regarding power consumption and construction size. Moreover, as the proposed system requires no line of sight between source and sensors, it is ideally suited for portable, location-independent applications such as the mobile assessment of a persons' head to torso posture and movement e.g. for the purpose of examining causes for chronic pain in the cervical spine area under conditions of daily life.
authors.forename: P
authors.initials: P
authors.lastname: Tadayon
authors.forename: T
authors.initials: T
authors.lastname: Felderhoff
authors.forename: A
authors.initials: A
authors.lastname: Knopp
authors.forename: G
authors.initials: G
authors.lastname: Staude
mesh_terms: D000465:Algorithms; D003198:Computer Simulation; D006257:Head; D006801:Humans; D060526:Magnetic Fields; D060306:Magnetometry / Q000295:instrumentation / Q000379:methods*; D008991:Monitoring, Physiologic / Q000295:instrumentation / Q000379:methods; D009068:Movement; D011187:Posture / Q000502:physiology*