System and method for power-efficient transmission of EMG data
First Claim
1. A method for displaying muscle force data to a user, said method comprising:
- placing a patch on the user'"'"'s skin over a muscle group to be monitored, wherein electrodes on the patch engage the skin, wherein the electrodes sense electromyographic (EMG) activity and produce an analog electrical signal;
filtering and amplifying the analog electrical signal with a limited bandwidth amplifier on the patch, wherein the analog signal is rectified and filtered to produce a digital signal and the resulting digital signal sampled at a rate in range from 3000 sec-1 to 4000 sec-1 to produce an output having an averaged amplitude on a microprocessor;
converting and rectifying the filtered and amplified analog signal to produce a digital signal;
processing the distal signal in a microprocessor on the patch to produce a smoothed output, wherein the microprocessor sub-samples the output having an averaged amplitude to produce a sub-sampled output;
transmitting the smoothed output;
receiving and displaying the smoothed output on a remote display unit.
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Abstract
The system for displaying muscle force data includes a wearable patch and a remote visual display. The wearable patch carries electrodes suitable for sensing electromyographic signals on the skin of the patient. The patch carries circuitry which converts the detected electromyographic signal to a digital output which can be transmitted to the remote visual display. The circuitry relies on filtering to produce a usable digital signal at very low power consumption. The transmitted signal can be used to drive a variety of visual displays, including a conventional hand-held personal communicators and entertainment devices which had been programmed to suitably process the visual display.
40 Citations
15 Claims
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1. A method for displaying muscle force data to a user, said method comprising:
- placing a patch on the user'"'"'s skin over a muscle group to be monitored, wherein electrodes on the patch engage the skin, wherein the electrodes sense electromyographic (EMG) activity and produce an analog electrical signal;
filtering and amplifying the analog electrical signal with a limited bandwidth amplifier on the patch, wherein the analog signal is rectified and filtered to produce a digital signal and the resulting digital signal sampled at a rate in range from 3000 sec-1 to 4000 sec-1 to produce an output having an averaged amplitude on a microprocessor;
converting and rectifying the filtered and amplified analog signal to produce a digital signal;
processing the distal signal in a microprocessor on the patch to produce a smoothed output, wherein the microprocessor sub-samples the output having an averaged amplitude to produce a sub-sampled output;
transmitting the smoothed output;
receiving and displaying the smoothed output on a remote display unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
- placing a patch on the user'"'"'s skin over a muscle group to be monitored, wherein electrodes on the patch engage the skin, wherein the electrodes sense electromyographic (EMG) activity and produce an analog electrical signal;
Specification