Title :
A Tube Length Measurement Device Based on Acoustic Method
Author :
Chen, Yimin ; Qi, Jian ; Zhang, Xuming ; Ding, Mingyue
Author_Institution :
Key Lab. of Image Process. & Intell. Control of Educ. Minist. of China, Huazhong Univ. of Sci. & Technol., Wuhan, China
Abstract :
A low-cost device using acoustic method for measuring open-end tube length is developed. The proposed device is aimed to get the length of the tubes which are piled up together, and only one end of which is available in the warehouse or dumping areas. The device contains the emitting and receiving probes to echo the sound pulse and receive the reflection sound wave, and has been developed with discrete component circuits whose key part is the logical control circuit based on ARM. Experiments are performed in the open tubes with the lengths between 0.85 m to 6 m. The measurement error is below 0.5 cm. For the tubes blocked by the cement or earth, the device can detect the location of obstruction automatically. Based on the acoustic method, experiments are also conducted in the blocked tubes based on Matlab software, and the analysis of the reflection wave is given.
Keywords :
acoustic variables measurement; length measurement; logic circuits; measurement errors; pipes; ARM; Matlab software; acoustic method; cement; discrete component circuits; dumping areas; emitting probes; logical control circuit; low-cost device; measurement error; receiving probes; reflection sound wave; size 0.85 m to 6 m; tube length measurement device; warehouse areas; Acoustic measurements; Acoustics; Calibration; Earth; Electron tubes; Length measurement; Measurement uncertainty;
Conference_Titel :
Intelligent Computation and Bio-Medical Instrumentation (ICBMI), 2011 International Conference on
Conference_Location :
Wuhan, Hubei
Print_ISBN :
978-1-4577-1152-7
DOI :
10.1109/ICBMI.2011.43
