What sensors are used in hand and arm bioprostheses?

Question

Electronics

What sensors are used in hand and arm bioprostheses? Has anyone worked with them?

Answer 1

If we talk about bionics, then the muscles have biopotentials (the article in the answer above), with the help of electrodes that are installed at certain points (the motor point, which includes the efferent neuron and the reference one), the signal is transmitted. On the receiving device (myographic amplifier) ​​there is an amplifier chip (such as INA333, there are special amplifiers for ECG) and a number of filters (LPF, Chebyshev filter and all that) that remove distortion (they can be software).
But this is if we talk about a non-invasive method, which is not even very accurate, since the skin has its own resistance + interference from other neurons, muscles and tedae. There is an invasive method, when an electrode is attached to the nerve and taken out. + As already mentioned, processing the information received also requires skills. If you google in English there are many interesting articles)
But in general, devices at the intersection of areas require knowledge in these areas. Without an understanding of biology, neurophysiology and technological nuances, it is difficult to make something work.
//I made a model of a bionic prosthesis (myographic amplifier, code, 3D printed part), but I processed the signal from the tibial muscle, not the signal complex.