超声波传感器应用系统设计
ur agent
autodoc摘 要
本文介绍了一款基于DSP的超声波测距系统，目的在于测量障碍物的距离。课题初步计划在室内静态测距，显示所测距离，当距离小于设定值时自动报警。
已知超声波在空气中的传播速度，只要测得超声波往返的时间，就可以求出障碍物的距离。本系统以超声波传感器为基础，DSP芯片TMS320VC5402来控制完成数据采集、处理、显示和报警。首先由DSP控制发出超声波并开始计时。超声波遇到障碍物后反射，反射回来的衰减信号被超声波传感器接收。衰减信号被放大和A/ D 转换后输入到DSP l芯片进行处理。这样就得到了超声波的传输时间，从而计算出障碍物的距离。软件部分则是通过CCS软件来完成的。
实验后表明：在障碍物距离较近时，所测距离精确度和重复性更高。该系统主要技术指标达到了设计要求。最后分析了误差原因，并提出了完善措施。
关键词：2014高考语文试卷超声波传感器 DSP TMS320VC5402 测距
sheratonUltrasonic nsor system designproduction是什么意思
对外汉语专业就业前景
Abstract：
This paper introduces an ultrasonic ranging system bad on DSP . The purpo is to measure the distance of the obstacles. Preliminary plan is in indoor location and display the distance.When the distance is less than the t, automatic alarm starts.
deem是什么意思
We know the propagation speed of ultrasonic.As long as the ultrasonic from time, we can work out the distance of the obstacles.The system is bad on ultrasonic nsors and DSP chip TMS320VC5402 control the data acquisition, processing, display and alarm.First of all, DSP control ultrasonic and a timing starts.After Meeting obstacles,Ultrasonic reflects and Ultrasonic ultrasonic nsor is receiving.Attenuation signal is amplifier and A/D conversion, it is input to the DSP for processing. This will give the ultrasonic transmission time, so as to calculate the distance of the obstacles. Software is done with software of CCS.
chant是什么意思
The experiment shows that: When obstacles distance is clo, the precision and repeatability of distance are higher.The system mainly technical indexes reach the requirements. Finally, I analyzes the error caus and puts forward measures to improve.
台风 英文
Key words：Ultrasonic nsor DSP TMS320VC5402 Distance measurement
