数字电位器MCP41010在止鼾器中的应用  

Application of Digital Potentiometer MCP41010 in Snore-ceasing Equipments

作　　者：金贵[1] 马显光[1] 邓玲[1] 

机构地区：[1]第三军医大学生物医学工程学院,重庆400030

出　　处：《现代电子技术》2010年第4期187-189,共3页Modern Electronics Technique

摘　　要：在设计的止鼾器恒流源电路中采用MCP41010数字电位器来改变恒流源对人体的刺激电流,从而可以根据人体对止鼾器刺激电流的适应程度适时改变电流的大小。在此介绍Microchip公司生产的MCP41010数字电位器的工作原理和主要特点,描述MCP41010的指令字格式。采用MCP41010作为恒流源电路的射极电阻,AVR单片机AT90S8535的I/O口与MCP41010相连接,单片机程序模拟MCP41010的SPI总线时序,从而达到改变阻值的目的。实验结果表明,使用MCP41010达到了很好的效果。Applying MCP41010 digital potentiometer of designed snore- ceasing equipments＇s constant current power supply circuit to change the stimulate current of constant current source on human body, so as to change the current according to adaptation of stimulate current. The principle and features of MCP41010 digital potentiometers produced by Microehip Company,and the instruction format are also introduced. Connecting MCP41010 with I/O interface of AT90S8535 and simulating SPI of MCP4010 to change the resistance. Results prove that it gains good effects.

关 键 词：数字电位器 MCP41010 止鼾器 SPI总线 AT90S8535 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]