摘要
介绍一种采用双阈值法消除由于信号衰减引起幅度变化所产生的测距误差，从而实现精确超声测距。结合机械扫描，完成了辊型的在线检测。
To eliminate the error of distance measurement caused by amplitude change from signal attenuation, the method based on dual thresholds is introduced. Thus the precise ultrasonic measurement is accomplished. Combining wiht the mechanical scanning the on-line detection of roller shape is implemented.
出处
《自动化仪表》
CAS
北大核心
2000年第1期15-16,共2页
Process Automation Instrumentation
关键词
超声测距
辊型检测
阈值法
轧辊
超声检测
Ultrasonic distance measurement Detection of roller shape Threshold method
