Research Of SimpliciTI-Based Wireless Microcurrent Neural Stimulator

Neural interface technology has made enormous progress in recent years. Electrical stimulation has been widely applied to medical healing and physiological theory research. When put an electric current with special shape and frequency on tissues of the organism, various physiological reactions will produce, which can be applied to medical and physiological research and contribute to body's functional restore.This paper presents the development of the nerve stimulator. The traditional stimulating instrument used to be connected by wire, which restricts animal's activity impacting on the correct physiological results; whose configuration is very large and complex causing poor movability; and which exists individual differences resulting in poor system adaptability.Specific to the above-mentioned disadvantages mentioned above, this essay, after comparing with a variety of the short distance wireless communication technologies, presents the design of SimpliciTI-based wireless microcurrent nerve stimulating system, which has two parts. One is the console, mainly for controlling the microcurrent stimulator, including the input and transmit of stimulating parameters; The other is wireless microcurrent stimulator, which produces stimulating pulse in accordance with stimulating parameters accepted from console.This paper discussed the design of console and microcurrent stimulator in detail. Main contents include three parts: firstly, to analyze and compare the present wireless communication technology, and realize the wireless communication between console and wireless micro current stimulator by adopting a low power and short distance wireless solution applicably for data communication in neural interface and selecting MSP430 MCU and RF transceiver chip CC2500 as the core components; secondly, aiming to ensure the miniaturization and low power consumption, microcurrent stimulator is used the ASIC chip technology and MSP430 USB connectivity using TUSB3410; thirdly, to program the software for the remote control of stimulating current. In this paper, the system Performance is testified. The result shows that wireless micro current neural stimulating system, comparing to the traditional neural stimulator, can stimulate the nerves by producing the pulse signal with different frenquency and amplitude, which achieves the miniaturization and low power consumption, movability and reliable performance.