摘要
针对TMS320VC5509A内部有双乘法器,拥有丰富的外设资源等特点,设计了超声波电子笔系统。介绍了根据超声波测距值计算笔触位置的基本方法,并对整个系统的硬件构架,DSP接口设计和软件功能设计作出说明。该系统的最大特点是对书写材料没有特殊要求,并且可以脱离计算机单独工作,便于携带。
An ultrasonic electronic pen system based on TMS320VC5509A, which has two multipliers and rich peripherals, is designed. First, the basic principles of calculating the location of a pen point according to the calcu- lation of the ultrasonic transmission distance are introduced. Then, the system hardware architecture, DSP interface design and software design are described. This system has the striking feature that it has no special requirements for writing material and can work without a computer and is therefore portable.
出处
《电子科技》
2010年第4期58-60,共3页
Electronic Science and Technology
基金
教育部科学技术基金资助项目(Z2007-1-63005)
关键词
超声波
电子笔
DSP
ultrasonic
electronic pen
DSP
