【摘要】 本研究旨在实现利用神经动作电信号控制多自由度假肢。针对植入的神经信号电极,研究了神经信号的放大。为了使植入电极测得的神经信号能无线地传至体外,作者借助E类功率放大器的输出功率受负载电阻影响的特点,通过时分复用技术实现了多路神经信号的经皮传输与识别。文中叙述的植入体内的放大电路、经皮发射电路均是通过体外E类功率放大器发射的射频磁场经感应线圈而获得工作电源。最后用本研究研制的电路模拟神经信号控制多自由度假肢,验证了神经信号的放大、经皮传输、识别控制的过程。更多还原

【Abstract】 The main p urpose of this paper is to achieve the control of upper-limb prosthesis by neu-ral-electricity. Amplification of neural signals based on neural electrodes was investigated and discussed. To send the neural signal detected by the electrode to outer-body wirelessly, we take advantage of the property that the output power of class E power amplifier varies with the change of the load, and make use of the time-sharing technique. Thus Transcutaneous multichannel neural signal transmission and identification were realized. Amplifier and transcutaneous signal emission circuit implanted in the body procured power by the implanted coil, which induced the radio field that was sent by the class E amplifier. Using this circuit, a multi-DOF upper-limb prosthesis is controlled by simulated neural signal and the process of amplification, transmission and identification were verified.更多还原