In this paper, we calculated out chronoxy value for the purpose of determining the optimal condition of stimulus pulses. We experimented on measuring estimated variations of resistance on various materials and variations areas of contact part for a vi...
In this paper, we calculated out chronoxy value for the purpose of determining the optimal condition of stimulus pulses. We experimented on measuring estimated variations of resistance on various materials and variations areas of contact part for a vision substitution system using stimulus pulse. We experimented on the materials of gold, silver, copper and aluminum, then we have concluded that the resistance variation for any material is almost same. But the resistance variation versus contact area for the same material is shown great. Also we have concluded that the minimum sensitive voltage is determined an optimal stimulus pulse of 60 Hz~ 300Hz, 10% of duty ratio. As the result of calculation of chronoxy value, it is shown about 0.1 mS.