[Non-contact measuring of small translations and rotations in all degrees of displacement].
The investigation of biomechanical problems often makes it necessary to measure displacements and rotations in space. An easy-to-handle optical measuring system has been developed that permits non-contact simultaneous determination of small translations and rotations in all degrees of freedom. Three two-dimensional light-sensitive sensors (PSD [position sensing detector] elements) were arranged spatially to form a measuring sensor. After processing in a computer, the signals definitively determine relative shift and rotation. Thus it is possible, for example, to measure the relative movement between two adjacent spinal vertebrae under different loads.
Dürselen
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Abteilung für Unfallchirurgische Forschung, Universität Ulm.
Claes
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L
Wilke
H J
HJ
D001696:Biomechanical Phenomena; D001842:Bone and Bones / Q000502:physiology; D006801:Humans; D007834:Lasers; D008027:Light; D012815:Signal Processing, Computer-Assisted / Q000295:instrumentation*; D016474:Weight-Bearing / Q000502:physiology*
Berührungsloses Mesen kleiner Translationen und Rotationen in allen Freiheitsgraden.