Volume 7 Number 4 (Apri. 2012)
Home > Archive > 2012 > Volume 7 Number 4 (Apri. 2012) >
JCP 2012 Vol.7(4): 941-946 ISSN: 1796-203X
doi: 10.4304/jcp.7.4.941-946

Experimental Study of Sound Travel-Time Estimation Method in Stored Grain

Hua Yan, Guannan Chen, Yinggang Zhou, Lijun Liu
School of Information Science and Engineering, Shenyang University of Technology, Shenyang 110870, China
Abstract—One common and traditional method for detecting stored grain deterioration is to measure grain temperature by contact sensors. Many sensors are installed throughout the bin for this. Temperature maps can also be obtained using acoustic travel-time tomography, which would be more suitable for store grain due to its non-contact measurement. The measurement of sound travel-time in grain bulk was researched. A time-delay estimation method using triple correlation with wavelet transform is proposed for solving the problem of sound attenuation in grain bulk. A measurement system of sound travel-time based on virtual instrument was built. Sound travel-time in soybeans was measured by the proposed method, cross-correlation method, and cross-correlation with wavelet transform method. The results show that the proposed method is best in measurement stability and accuracy. Thus it is expected to be used in an actual acoustic temperature monitoring system for stored grain.

Index Terms—acoustic tomography, temperature measurement, stored grain, sound travel-time estimation, correlation, wavelet transform.

[PDF]

Cite: Hua Yan, Guannan Chen, Yinggang Zhou, Lijun Liu, "Experimental Study of Sound Travel-Time Estimation Method in Stored Grain," Journal of Computers vol. 7, no. 4, pp. 941-946, 2012.

General Information

ISSN: 1796-203X
Abbreviated Title: J.Comput.
Frequency: Monthly
Editor-in-Chief: Prof. Liansheng Tan
Executive Editor: Ms. Nina Lee
Abstracting/ Indexing: DBLP, EBSCO,  ProQuest, INSPEC, ULRICH's Periodicals Directory, WorldCat, CNKI,etc
E-mail: jcp@iap.org
  • Nov 14, 2019 News!

    Vol 14, No 11 has been published with online version   [Click]

  • Sep 16, 2019 News!

    Vol 14, No 9 has been published with online version   [Click]

  • Aug 16, 2019 News!

    Vol 14, No 8 has been published with online version   [Click]

  • Jul 19, 2019 News!

    Vol 14, No 7 has been published with online version   [Click]

  • Jun 21, 2019 News!

    Vol 14, No 6 has been published with online version   [Click]

  • Read more>>