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methods to determine the exposure to measure and evaluate in a solid organic material generated by piezo electric potentials, device for implementation of the method as well as application of the process.
methods to determine the exposure to measure and evaluate in a solid organic material generated by piezo electric potentials, device for implementation of the method as well as application of the process.
This process involves detecting piezo-electric potentials which are characteristic of a mechanical strain exerted on a long rigid member made of organic material. For this purpose, the potentials at two points spaced apart on this member are measured by means of two operational amplifiers CI1 and CI2 in order to obtain a signal which is characteristic of the stress rather than of its derivative and these signals are processed by means of analog operators OA1, OA2, OA3 in order to identify the bending DELTA F and torsional T stresses which are then compared with reference values RT, RF in order, for example, to trigger a signal. This process can be used for opening a safety ski binding.
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