Myoelectricity and pressure combined hybrid sensor

Abstract

The invention discloses a myoelectricity and pressure combined hybrid sensor. The sensor comprises eight identical sensing modules, a data acquisition module, a wireless adapter and an upper computer.Floating electrodes of myoelectric electrodes of the sensing modules 1-8 are cavities customized based on PDMS; the cavity is adhered to the periphery of a barometer on a circuit board to form a closed space; and electrodes in the middle are integrally fixed on the PDMS through a gasket, and the myoelectric electrodes are elastic in the axial direction, limited to only move in the axial directionand used as pressure probes applied to the electrodes. According to the invention, the structural complexity of an electromyography and mechanical topographic map measurement system is reduced; the number of sensing modules in EMG-MMG measurement is reduced, the problem that different sensor probes are needed for measuring EMG and MMG signals through a hybrid electrode is solved, the synchronismof the EMG and MMG signals in time and space is ensured, and modularization and integration of the EMG-MMG measurement system are achieved.

Description

technical field [0001] The invention relates to the technical field of biomedical sensors, in particular to a hybrid sensor combining myoelectricity and pressure. Background technique [0002] There are currently millions of amputees in the world. For these amputees, the only way to recover is to install artificial limbs. In recent decades, thanks to the development of engineering technology, intelligent prosthetics based on human-machine interface have brought good news to amputees. The concept of intelligent prosthetics includes at least two connotations, one is the intelligence of the mechatronics and autonomous control of the prosthesis itself, and the other is that the control of the prosthesis reflects intelligence, that is, the wearer of the prosthesis can use the movement intention of the brain or healthy parts of the body To control the prosthesis, this is mainly achieved through the so-called human-machine interface. [0003] The generalized human-computer interf...

AI Technical Summary

Problems solved by technology

There are certain deficiencies in this separate method, especially in actual prosthetic control. First, the number of sensing modules is relatively large and the structure is complex. Even if FSR is used, matching mechanical fixtures and force probes are required. Second, separate There is a problem of signal synchronization in the system, and additional devices may be required for synchronization

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