目 录
摘 要 .......................................................................I
Abstract ...................................................................II
1 绪论 ......................................................................1
1.1 课题背景及意义 ...............................................................................................................1
1.2 电动轮椅控制器的研究与发展现状 ...............................................................................1
1.3 电动轮椅操纵杆控制器的介绍 .......................................................................................2
2 电动轮椅操纵杆控制器整体方案设计 ..........................................3
2.1 操纵杆控制器功能介绍 ...................................................................................................3
2.2 操纵杆控制器应用的基本原理 .......................................................................................3
2.2.1 操纵界面原理 .........................................................................................................3
2.2.2 电动轮椅运动分析 .................................................................................................8
2.2.3 差速转向方程的构建 ...........................................................................................11
2.3 操纵杆控制器整体设计方案 .........................................................................................12
2.3.1 整体方案的确定 ...................................................................................................12
2.3.2 微控制器选型 .......................................................................................................13
3 操纵信号采集设计 .........................................................15
3.1 霍尔效应传感器分类及特性 .........................................................................................15
3.2 霍尔效应传感器选择 .....................................................................................................16
4 硬件电路设计 .............................................................18
4.1 正 5V 电压源...................................................................................................................18
4.2 +1V 电压源 ...................................................................................................................19
4.3 操纵信号采集电路 .........................................................................................................19
4.4 蜂鸣器电路 .....................................................................................................................21
4.5 显示电路 .........................................................................................................................21
4.6 按键电路设计 .................................................................................................................23
4.7 通信电路设计 .................................................................................................................24
4.8 驱动电路 .........................................................................................................................26