超声测量物位中的一些声学问题  

Some Acoustics Issues in Ultrasonic Level Measurement

作　　者：高克成[1] 

机构地区：[1]上海工业自动化仪表研究所,上海200233

出　　处：《自动化仪表》1998年第11期9-13,共5页Process Automation Instrumentation

摘　　要：分析了超声技术应用于物位测量中的一些声学问题,如声衰减、声反射、声匹配、声的指向性、声波导管等,介绍了利用声在媒质中的声速、衰减、共振、反射等现象可测得物质的成分、比重、厚度等,超声物位计是应用回声测距法检测物位的.Some acoustics issues in level measurement implemented by ultrasonic technology are analyzed, these include acoustic attenuation, acoustics reflection, acoustic match, acoustic orientation, and acoustic wave guide, etc. By using the acoustics henomena of velocity, attenuation, resonance and reflection in media the composition, gravity and thickness of materials can be accomplished. The ultrasonic level meter is implemented by the method of echo distance detection.

关 键 词：超声物位计 声学现象 回声测距法 超声测量 

分 类 号：TH816.2[机械工程—仪器科学与技术] TB551[机械工程—精密仪器及机械]