| 主权项 |
1. A system to adaptively control the release of a ski bindings comprising:
a MEMS accelerometers attached to the skier body and embedded into the ski bindings providing measurements of the skier and equipment acceleration vectors; a smart-phone based safety analysis system designed to estimate forces applied to the ski binding and the skier knees and to provide control signal to the MEMS actuators embedded in the ski bindings; a MEMS actuator embedded in the ski bindings and intended for transferring control signals generated by the smart-phone based safety analysis system into bindings release motion; and a radio interface for transferring measurements and control signals between the sensor, a smart-phone based safety analyzer and bindings actuators, andwherein such safety analysis comprises of:
at the specified intervals, retrieving an instantaneous acceleration vectors of each of the xyz coordinates from the accelerometers embedded in the ski bindings; applying an IIR filtering to the instantaneous acceleration vectors then performing piece-wise estimation of the acceleration, velocity and rotational moments; based on such piece wise estimation, and the equipment parameters contained within the second information, calculate forces applied to the ski-binding system for each of the xyz coordinates; based on acceleration vectors received from the accelerometers and the skier and ski equipment parameters contained in the first and the second information; based on the skier parameters contained within the first information, and the forces applied to the ski bindings, calculate forces and moments applied to the skier knees; andwherein, the instantaneous forces applied to the ski bindings and the skier knees are compared of with the safety thresholds obtained during the calibration, and if any of such force exceeds the safety thresholds for the time longer then the predefined during the calibration, proved an instantaneously release both bindings by sending control signal to the actuators. |
