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Acupuncture is a treasure of the Chinese nation , it has a unique effect and rich connotation, characteristics and advantages of our country has one of the disciplines . Acupuncture has entered the field of modern science has aroused great concern national physician and interest . However, the current mechanism of efficacy of acupuncture mostly statistically significant comparative study , the lack of regular and systematic induction and quantified. At present, although EEG , ECG, EMG , etc. can to a certain extent reflect the role and efficacy of acupuncture , but its sampling frequencies below 200Hz , can not meet the use of multi-point , synchronous Electrode surface signal transduction and the role of acupuncture requirements of the law . Firstly, from the application surface shielded cable to an electrical signal into the primary amplifier begins , proposes a multi-point synchronization signal detection device surface , and then amplifying times and at all levels of resistance, capacitance and noise ratio of the correct size detailed theoretical analysis, simulation and experimental ; sampling theorem to calculate the reasonable use of the sampling frequency , and make use of complex programmable logic device (CPLD) controls analog digital converter (AD), the analog signals into digital signals. On this basis , this paper through the CPLD of first in first out memory (FIFO) for control, data buffering ; then use the data to a high-speed DSP large number of synchronous dynamic memory device immediately (SDRAM) , and finally , through a universal serial bus (USB) interface chip upload the data to the PC. This basically implements a high-speed, multi-channel , simultaneous acquisition of surface electrical detection device , the studied device has a high-precision, high anti-interference characteristics, and to quantify the efficacy of different acupuncture techniques , revealing acupuncture electrical information conducted with the law provides an important role in the foundation .
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