A New Measuring Method of Cylinder Diameter using Sound Phase Delay

一种利用声相位延迟测量圆柱直径的新方法

• 批准号: 07650136
• 负责人: ICHIMIYA Ryoichi
• 金额: $ 1.54万
• 依托单位: Niigata University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07650136/
• 关键词: measurement; sound; phase delay; cylinder; diameter; non-contact

A new measuring method of the diameter of a cylinder by means of sound signals, particularly by means of changes in phase of sound waves, is studied. This new method is based on the phenomenon that the phases of sound waves scattered by an obstacle are delayd according to the character of the obstacle. Phase delay of sound pressure behind a cylinder, which plane sound waves impinged on, was related to the cylinder diameter up to the 100 mm.Experiments have been made using a loudspeaker, microphone and a FFT-analyzer. The problem of the disturbance of plane waves by a cylinder has been analyzed theoretically and the relationship between the phase delay and the diameter was obtained. The diameter was determined with precision of(]SY.+-。[)0.04 mm from the relationship that the phase delay was linearly proportional to the diameter over a wide diameter range. For the purpose of improving the precision, a pair of rigid walls, which the cylinder of interest was placed midway between, were located parallel to the incident sound waves.It was found that the increase rate of the phase delay with diameter became larger within a certain diameter range which was dependent on the frequency of sound and that the precision was improved up to (]SY.+-。[) 0.01 mm.

研究了一种利用声音信号，特别是利用声波的相位变化来测量圆柱体直径的新方法。该方法是基于障碍物散射声波的相位随障碍物的性质而延迟的现象。平面声波冲击圆柱体后声压的相位延迟与直径达100 mm的圆柱体有关。用扬声器、麦克风和FFT分析仪进行了实验。从理论上分析了圆柱体对平面波的扰动问题，得到了相位延迟与直径的关系。直径测定的精密度为(]sy.+-。在较宽的直径范围内，相位延迟与直径成线性关系的距离为0.04 mm。为了提高测量精度，将一对刚性墙与入射声波平行放置，在一定的直径范围内，相位延迟随直径的增加速率变大，且测量精度可提高到(]sy+-)。[)0.01 mm。

项目成果

一宮亮一・坂本秀一 等: "音響信号を利用した液面レベルと傾斜角度の測定" 日本機械学会論文集(C編). 62巻595号. 949-955 (1996)

Ryoichi Ichinomiya、Shuichi Sakamoto 等人：“使用声学信号测量液位和倾斜角”日本机械工程师学会会刊（编辑 C）第 62 卷，第 595 期。949-955（1996 年）。

Ryoichi Ichimiya Shuichi Sakamoto etc.: "Measurement of Cylinder Configuration using Sound Phase Delay" Transaction of JSME. Vol.62, no.603. 4250-4256

Ryoichi Ichimiya Shuichi Sakamoto 等：“使用声音相位延迟测量气缸配置”JSME 交易。

一宮亮一・坂本秀一等: "音響信号の位相遅れを利用したひずみ円形状の測定" 日本機械学会論文集(C編). 62巻603号. 4250-4256 (1996)

Ryoichi Ichinomiya、Shuichi Sakamoto 等人：“使用声信号相位延迟测量应变圆形状”日本机械工程师学会会刊（编辑 C）第 62 卷，第 603 期。4250-4256（1996 年）。 ）