Abstract
A multi-channel implantable electrical stimulator is described based on wireless microcontroller CC2430. PWM conversion circuits to DAC and the voltage-controlled current source are designed, the latter of which is needed for electrical stimulator circuits. Through the multi-channel analogy switches, positive and negative pulses on the rat brain areas can be achieved. The positive and negative waves are shown to verify the validity of the circuits.
Highlights
In recent years in the field of robots, a variety of robots emerge one after another
In 2002, Nature magazine reported that New York State University Medical Center, Professor Chapin implanted electrodes in different brain regions of rats, and through appropriate stimulation the rats could walk along a certain route assumed by human beings[3].In 2004, Professor Atema in Boston University successfully implanted electrodes in the brain of a shark, and he could control the direction of the shark under the water, using the chip implanted in the body of the shark[4]
The entire implantable multi-channel electrical stimulation of brain circuits consists of power circuit, wireless microcontroller CC2430, and shaping circuit for PWM, RC filter circuit, voltage-controlled current source and multi-channel analog switches
Summary
In recent years in the field of robots, a variety of robots emerge one after another. While they are becoming smarter in intelligence and smaller in size, they cannot walk afar just because of the limited energy the microrobot carries. If the existing small animals can be manipulated, it is possible to solve the problem of inadequate energy carried by micro-robots, a new way is available for rehabilitation of the disabled. This kind of robots is called animal-robot. Comparing with the electrical nerve stimulation based on voltage source, the current stimulator circuits have some advantages of accurate positioning, small stimulated current, stable values and less pains etc
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