探討人體經絡之頻率響應

Frequency Response of Human Body Meridian

范綱榮(Kang-Jung Fan)

指導教授 ： 胡威志

中原大學/工學院/醫學工程研究所/碩士(2007年)

https://doi.org/10.6840/CYCU.2007.00673

摘要

摘要
本研究討論穴位電阻抗量測，具體評估發展定電流且頻率可調之電阻抗量測系統，其主要目的是要能夠辨別出穴位點與非穴位點的阻抗型態之不同。先前的學者研究推測人體皮膚阻抗的電路模型如同一低通濾波器，截止頻率約在1kHz以下，且許多研究證明穴位點的阻抗低於非穴位點。以電壓12V的弦波0.1mA與0.5mA電流，10Hz到10kHz等不同頻率、電流的條件來測量，以探討穴位點的頻率響應。以20位年齡20~26的男女受測者為實驗對象，實驗首先測量同一經絡上不同位置的穴位點，探討同一經絡上長度是否會影響穴位點阻抗的大小。接下來測量不同經絡上長度相同的穴位點，探討在等長的情況下在同一條經絡上的穴位是否會與在不同經絡上的穴位有所差異。實驗結果發現在同一經絡上的三個穴位點，不論在高頻或是低頻其阻抗都沒有差異，而在不同經絡相同長度的穴位點會在小電流低頻(0.06mA、10Hz)的情況下表現出明顯的差異。在電壓、相位與頻率的關係上可以發現經絡穴位的阻抗也可用一階低通濾波器的來模擬，截止頻率約在接近1kHz以下。

關鍵字

經絡 ； 穴位點

並列摘要

Abstract
The objective is to develop of an acupuncture point electrical impedance measurement system to identify the impedance patterns and frequency response of acupuncture points and meridians. Previous reports suggested that the skin impedance in human could be a low-pass electrical filters. Furthermore, previous researchers suggested that the cut-off frequency for skin impedance was below 1000 Hz. This reported system was using a microprocessor to control output signal for stimulation systematically. The system will be varying the frequency and the current for the output stimulation for electrical impedance measurement. The range of frequency was from 10 Hz to 10,000 Hz. The voltage was set at 12 volt. The current was ranging from 0.1 milli ampere (mA) to 0.5 milli ampere (mA). The data acquired by the device will be analyzed with a self-developed data analysis system. The program first analyzed the frequency response of skin impedance. The Bode plot of electrical impedance frequency response will be showing the phase and magnitude of output/input relationship. In the result, we have found that the impedance in the same meridian was no difference at higher stimulate current. The acupuncture points which had the same length in difference meridian were shown difference impedance in low current and low frequency(0.06mA, 10Hz).

並列關鍵字

meridian ； acupuncture point

參考文獻

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