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Vol. 168, Issue 4, April 2014, pp. 37-44

 

Bullet

 

Application of Adaptive Noise Cancellation for Anti-Vibration in Yield Monitor
 

1 Yan LI, 1 Zhiyong ZHANG, 2 Xiaohua SUN and 1 Fushun WANG

1 College of Information Science and Technology, Agricultural University of Hebei, Lingyusi Street No.289, Baoding City, Hebei Province, 071001, China
2 Department of Digital Media, Hebei Software Institute, Zhida Road No.1, Baoding City, Hebei Province, 071001, China
1Tel.: 1-367-328-3882

E-mail: fshw99@163.com

 

Received: 20 December 2013 /Accepted: 28 February 2014 /Published: 30 April 2014

Digital Sensors and Sensor Sysstems

 

Abstract: In the process of grain harvest, yield monitor system acquires real-time spatial distribution information of crop yield to provide important basis of decision-making for subsequent assignments of precision agriculture. The measurement accuracy has been seriously affected by Combine working vibration. Based on an innovative test platform of wheat combine harvester for yield monitor, well simulate the working vibration at the field situation; impact-based grain flow sensor with the structure of dual-parallel-beams as test terminals and using the NI (National Instrument) data acquisition card to acquire signals; grain impacted frequency as fundamental frequency to process harmonic extraction, and for extracted signals, applied the improved LMS adaptive algorithm to interference cancellation, aim to eliminate interference cased by working vibration. The comparative experiment show that the maximum relative error less than 2 % under the proposed method and proved that the proposed algorithm in this paper is effective.

 

Keywords: Precision agriculture, Yield monitor system, Vibration noise, Harmonic extraction LMS.

 

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