Résumé
Multiple methods of attitude measureinent based on inertial measurement unit (IMU) were summarized.The single sensor's means of attitude measurement and it's relative merits were introduced.What's more,the combined method applied to attitude measurement were highlightedly mentioned.In addition,the ways of attitude measurement with multi-sensors units were listed.It also gave useful recommendations for better selection with regard to specific application.The prospect of IMU applied on human bodies was analysed.
Résumé
Objective To create a model with simple expression of mechanical characteristics of the human chest for the development of a manikin. Methods A simplified Gruben-model was proposed based on the anatomical structure and physical characteristics of the materials, and perfect coefficients were computed. The model feasibility was proved by the coefficient of determination and residual analysis.Results The mathematic form of the model provided had three fewer terms than Gruben′s. The coefficient of determination approximated 1, the residue was small, and the perfect coefficients of "a typical human" were determined.Conclusion The hypothesis of the model makes the coefficients physically meaningful, which provides a new method to study the force-displacement relationship of the thorax. Also the simple form makes it easy to create the model and provide some guidance for the design of a manikin′s chest.