无线三维空间鼠标的设计与实现

Design and Realization of a Wireless Three-dimensional Mouse

系统以两片STM32F103C8单片机为控制核心设计一款脱离二维平面,在三维空间可以任意移动并操作方便的空间鼠标。该装置采用加速度传感器MPU6050结合按键模块电路检测使用者的状态并将采集到的模拟角速度经内部自带的AD转换器转换为数字信号,使用IIC通信协议与主控芯片STM32F103进行通信并对其进行处理,按键模块输入三个不同的按键值用来代表鼠标左键、右键、滚轮的操作功能,并将按键输入STM32F103存储。NRF24L01发送端发送数据,NRF24L01接收端接收信号,接收端的STM32F103mini开发板解析数据,通过USB连接至电脑,使三维空间的鼠标指针可以实现移动、翻页以及点击等功能。经过实际测试,三维空间鼠标功能正确,使用方便,可以应用于体感游戏中,满足用户多方面的需求。

A kind of mouse, which quite differs from a common mouse moving in the 2 D plane, is designed successfully which can move, click and roll easily in the 3 D space based on two control chips named STM32 F103 C8. The device adopts an acceleration sensor MPU6050 to detect the user’s status with the help of a key-module circuit. When the angular velocity is collected, it will be converted into digital information by its own AD convertor and transmitted to STM32 F103 control unit by IIC communication protocol. So the corresponding storage and process will be achieved. Meanwhile, three different key values of the key-module in MCU will represent left button, right button or rolling operation function and the key value can be stored in MCU in advance. The wireless transceiver module NRF24 L01 can transfer some collected data by MCU6050 and the receiver can receive it. And the self-analytic data can be done by STM32 F103 mini development board. Then the PC can get it through USB interface. Then the mouse pointer in three-dimensional space can move, flip and click easily. The function of the mouse in 3 D space is correct and its operation is handy. It can also be applied in some motion sensing games and can satisfy user’s many-sided demands.