Objective

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An intelligent moxibustion instrument based on electromyography was designed to evaluate the real-time therapeutic effect of moxibustion.

Methods

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Taking Shenshu (BL23) as the subject

surface electromyography (sEMG) at the center and equidistant points of Shenshu (BL23) were collected. The characteristic parameters

integrated electromyography (iEMG) and root mean square (RMS) were calculated before and after moxibustion. After analyzing the effect of moxibustion

a function algorithm for the end-of-moxibustion was obtained. Using this algorithm and combined with STM32 technology

the control system of moxibustion instrument and the upper computer software were designed to achieve the precise control during moxibustion delivery. Finally

the function

stability and safety of the moxibustion instrument were verified through clinical trials to ensure its effectiveness in practical application.

Results

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During one cycle of moxibustion at the center of Shenshu (BL23)

the iEMG of sEMG decreased over time

meaning the decrease in muscle fatigue degree

and after one cycle of moxibustion

it elevated over time

showing the increase in muscle fatigue degree. RMS increased by 1.90% before and after moxibustion at the equidistant points of Shenshu (BL23)

and the system indicated the end of moxibustion when RMS increased by 0.15%

and decreased by 0.13% at the center of Shenshu (BL23). The intelligent moxibustion instrument designed based on this algorithm can realize the function of mild moxibustion

and the effect of moxibustion can be evaluated by the real-time monitoring of RMS changes through the upper computer. During the operation of moxibustion instrument

moxa stick was fixed stably

remained a safe distance of 3 cm to 4 cm away from the skin surface. When the length of moxa stick was less than 5 cm left after ignited and the skin temperature exceeded the preset safety threshold of 48 ℃

the system was alarmed automatically.

Conclusion

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The intelligent moxibustion instrument designed in the research can effectively evaluate the effect of moxibustion

and ensure the safety and stability during moxibustion delivery.