Surface electromyogram signal acquiring device

Abstract

The invention discloses a surface electromyogram signal acquiring device, which comprises a central processor as well as a signal conditioning circuit, a voltage detection circuit, a signal conversion circuit and a memory which are connected to the central processor, wherein the signal conditioning circuit is connected to an EMG (electromyogram) acquisition electrode; and the signal conversion circuit is additionally connected to a USB interface. The surface electromyogram signal acquiring device disclosed by the invention can greatly reduce the interface source of an electromyogram signal and improve using convenience thereof, and the acquiring device is convenient and flexible to use and low in interference on the acquired electromyogram signal.

Description

technical field [0001] The invention relates to the field of electronic circuits, in particular to a surface muscle signal collector. Background technique [0002] Electromyography (EMG) is the temporal and spatial superposition of motor unit action potentials (MUAPs) in numerous muscle fibers. Surface electromyography (SEMG) is the combined effect of superficial muscle EMG and electrical activity on the nerve trunk on the skin surface, which can reflect neuromuscular activity to a certain extent; compared with needle electrode EMG, SEMG is non-invasive in measurement , non-invasive, simple operation and other advantages. Therefore, SEMG has important practical value in clinical medicine, ergonomics, rehabilitation medicine and sports science. [0003] With the development of detection technology and signal processing means, using SEMG instead of needle electrode EMG for comprehensive clinical non-destructive diagnosis has become one of the hot issues in biomedicine and me...

AI Technical Summary

Problems solved by technology

The obvious disadvantages of this method are as follows: (1) Special instruments are required to complete the signal acquisition, and the application occasions are limited, such as the SEMG of the limbs of athletes in sprinting cannot be collected; (2) Due to the connection of wires, when the limbs move, it is easy to cause electrodes The relative movement between the skin and the skin affects the acquisition results; (3) The power supply is obtained after processing by the mains, which introduces a large power frequency interference and increases the difficulty of data processing; (4) If the wire is long, it is very easy to introduce Other disturbances in the environment, such as electromagnetic interference, etc.

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