Safety Measures in Constructing EMG Amplifiers

The project involves constructing two similar EMG circuits with different gain settings to measure electromyography (EMG) signals from two forearm muscles: the Flexor Digitorum Superficialis (FDS) and the Extensor Carpi Radialis Longus (ECRL). The outputs from these circuits will be connected directly to a National Instruments SCC-68 connector block, interfacing with a PCI-6221 data acquisition (DAQ) system and a computer running LabVIEW 8.6 software. The objective is to correlate the EMG signals from the forearm muscles with hand grip strength, measured while gripping a hand dynamometer. Included are the EMG waveform from the constructed circuit for the FDS muscle, the circuit schematic, and a brief experiment to analyze the relationship between EMG frequency and hand grip strength.

The project focuses on the design and implementation of two electromyography (EMG) circuits, tailored to capture and analyze the electrical activity of the Flexor Digitorum Superficialis (FDS) and Extensor Carpi Radialis Longus (ECRL) muscles. The circuits are designed with varying gain levels to optimize the signal output for each muscle, ensuring accurate readings of the EMG signals.

The EMG signals are routed to a National Instruments SCC-68 connector block, which serves as a bridge to the PCI-6221 data acquisition system. This DAQ system is integrated with a computer that operates LabVIEW 8.6, a platform for data visualization and analysis. The LabVIEW environment facilitates real-time monitoring and processing of the EMG signals, allowing for immediate feedback during experimental trials.

The primary goal of this project is to establish a correlation between the EMG signals recorded from the forearm muscles and the hand grip strength, which is quantified using a hand dynamometer. The experimental setup involves participants gripping the dynamometer while EMG data is collected, providing insights into muscle activation patterns related to grip strength.

Included in the project documentation are the EMG waveform data collected from the FDS muscle, along with the specific circuit schematic used for its measurement. Additionally, a concise experimental analysis is presented to examine the relationship between the frequency of the EMG signals and the corresponding grip strength, contributing to a better understanding of muscle function and performance.

Overall, this project aims to enhance the understanding of muscular activity in relation to physical strength, providing valuable data for applications in rehabilitation, sports science, and ergonomics.My project is about constructing two similar EMG circuits (differing in gain) to measure EMG from two forearm muscles called the Flexor Digitorum Superficialis (FDS) and Extensor Carpi Radialis Longus (ECRL). The outputs from the EMG circuits will be connected directly to a National Instrum ents SCC-68 Connector block with a PCI-6221 DAQ and computer running Labview 8. 6 software. The purpose of this project is to related the EMG signals from the forearm muscles to hand grip strength. Experimental measurements from the EMG are to be taken while im gripping a hand dynamometer. I have included the EMG waveform from the circuit I have constructed to measure EMG from the Flexor Digitorum Superficialis muscle.

I have also included the circuit schematic I have used together with a short experiment I conducted to find the relationship between EMG frequency and hand grip strength. 6180. EMG_circuit. pdf All content and materials on this site are provided "as is". TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with regard to these materials, including but not limited to all implied warranties and conditions of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property right.

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