摘要
传输皮带线速度的在线测量对皮带运输系统的安全运行意义重大。以光电式传感器为基础,介绍了一种新颖的皮带线速度测量方法。该方法采用差分信号来传输高频脉冲,使用单片机来捕获脉冲并实时计算线速度。最后通过RS-485总线与上位机进行数据传送,实现皮带线速度的远程高精度测量。运行结果表明,该系统测量精度高、稳定性好,具有一定的实用价值。
On-line measurement of Linear velocity of conveyor belt is very important to run conveyor safely. On the basis of photoelectric sen- sor, a new measuring method for Linear velocity of the belt is introduced. With this method, the high frequency pulses are transferred by adop- ting differential signal; and the pulses are captured in single chip computer, thus the Linear velocity is calculated in real time. The measured data are transmitted to host computer through RS-485 bus to realize remote high precise measurement for Linear velocity. The operating results indicate that the system features high accuracy, good stability and offers practical applicable value.
出处
《自动化仪表》
CAS
2008年第9期50-51,55,共3页
Process Automation Instrumentation
关键词
线速度
光电式传感器
差分信号传输
高精度测量
RS-485总线
高频脉冲
Linear velocity Photoelectric sensor Differential signal transmission High precise measurement RS-485 bus High frequency pulse
