Development and optimization of a novel grain flow sensor based on PVDF piezoelectric film

Wang He, Hu Jingtao, Gao Lei, Jia Yanfeng

Abstract


A novel grain flow sensor consists of an impact plate and a PVDF (Polyvinylidene Fluoride) piezoelectric film was developed in this research. The kinetic model of the grain flow sensor was built to analyze the steady and transient vibration disturbances which had a significant influence on performance of the sensor, and the results showed that damping ratio of the sensor was the key factor to improve accuracy of the sensor. To maximize damping ratio of the sensor, the thickness of the impact plate and damping material were optimized according to a loss factor model of the free damping structure. The optimized results indicated the most appropriate thickness ratio of damping material and the impact plate was 6. A test rig equipped with the novel grain flow sensor and weight sensors which could simulate field situations was built to investigate the performance of the sensor, on which test experiments under different feed flows were conducted. The results showed that the maximum error of the sensor was 3.02% and the mean error was 2.15%, which revealed that the novel grain flow sensor could be used to measure grain flow. Comparing with conventional grain flow sensors, the novel grain flow sensor has the features of high accuracy, simple structure and flexible signal processing methods.
Keywords: grain flow sensor, vibrations, free damping structure, test rig
DOI: 10.3965/j.ijabe.20160904.1887

Citation: Wang H, Hu J T, Gao L, Jia Y F. Development and optimization of a novel grain flow sensor based on PVDF piezoelectric film. Int J Agric & Biol Eng, 2016; 9(4): 141-150.

Keywords


grain flow sensor, vibrations, free damping structure, test rig

Full Text:

PDF

References


Wei X H, Zhang J M, Dan Z M, Liu C L. Signal processing method of impact-based grain flow sensor for predicted yield. Transactions of the CSAE, 2014; 30(15): 222–228. (in Chinese with English abstract)

Arslan S, Inanc F, Gray J N, Colvin T S. Grain flow measurements with X-ray techniques. Computers and Electronics in Agriculture, 2000; 26(1): 65–80.

Wang Y W. Monitoring the grain flow on combines device and performance study. Transactions of the CSAM, 1993; 24(2): 42–48. (in Chinese with English abstract)

Zhang X C, Hu X A, Zhang A G, Zhang Y Q, Yuan Y W. Method of measuring grain-flow of combine harvester based on weighing. Transactions of the CSAE, 2010; 26(3): 125–129. (in Chinese with English abstract)

Chosa T, Kobayashi K. Studies on yield monitoring combine. Proceedings of the 58th Annual Meeting of the JSAM, 1999; 99–100.

Hu J W, Luo X W, Ruan H, Chen S R, Li Y M. Design of a dual-plate differential impact-based yield Sensor. Transactions of the CSAM, 2009; 40(4): 69–72. (in Chinese with English abstract)

Li X C, Li M Z, Wang X J, Zheng L H, Zhang M, Sun M Z, et al. Development and denoising test of grain combine with remote yield monitoring system. Transactions of the CSAE, 2014; 30(2): 1–8. (in Chinese with English abstract)

Qiu B J, Jiang G W, Yang N, Guan X P, Xie J J, Li Y M. Discrete element method analysis of impact action between rice particles and impact-board. Transactions of the CSAE, 2012; 28(3): 44–49. (in Chinese with English abstract)

Zhou J, Zhou G X, Miao Y B, Liu C L. Damping design of impact-based grain yield sensor. Transactions of the CSAM, 2005; 36(11): 12l–123, 127. (in Chinese with English abstract)

Zhou J, Liu C L. Load cell design for parallel beam impact-based grain mass sensor. Transactions of the CSAE, 2007; 23(4): 110–114. (in Chinese with English abstract)

Zhou J, Liu C L. Signal processing method for impact-based grain mass flow sensor with parallel beam load cell. Transactions of the CSAE, 2008, 24(1): 183–187. (in Chinese with English abstract)

Wang G, Zhang H L, Xin L G. Research for the grain-flow-measurement system on real time based on piezoelectric crystal sensor using the principle of impact in laboratory. Journal of Qingdao Agricultural University: Natural Science, 2013; 30(3): 227–230. (in Chinese with English abstract)

Gao J M, Hao L B, Zhang G, Li Y B, Yu L. Numerical simulation and test of grain impact piezoelectric yield sensor. Transactions of the CSAE, 2009; 40(6): 63–66, 93. (in Chinese with English abstract)

Gao J M, Li Y B, Hao L B, Zhang G, Yu L. Design and test of a novel piezoelectric grain mass flow sensor. Journal of Jiangsu University: Natural Science Edition, 2011; 32(2): 129–133. (in Chinese with English abstract)

Xin Y, Yang Q Y, Zheng H T, Jiang Q. Study of tactile & slip sensor on structure and signal conditioning circuit design based on PVDF piezoelectric film. Optics and Precision Engineering, 2014; 36(1): 76–78, 84. (in Chinese with English abstract)

Wen S, Zhang T M, Yang X L, Lu Y H, Xu Z L. Numerical simulation and experiment of a wind piezoelectric energy harvester based on vortex-induced vibrations. Transactions of the CSAM, 2014; 45(2): 269–275. (in Chinese with English abstract)

Ehlert D. Measuring mass flow by bounce plate for yield mapping of potatoes. Precision Agriculture, 2000; 2(2): 119–130.

Liang C F, Ou J P. Relationship between structural damping and material damping. Earthquake Engineering and Engineering Dynamics, 2006; 26(1): 49–55. (in Chinese with English abstract)

Kormann G, Demmel M, Auernhammer H. Testing stand for yield measurement systems in combine harvesters. ASAE Annual International Meeting, Orlando, Florida, USA, 12-16 July, 1998; 653–654.

Chen S R, Qiu H Z, Li Y M, Lu Q. Design and experiment of test-bed for grain flow sensor. Transactions of the CSAE, 2012, 28(16): 41–46. (in Chinese with English abstract)

Jiang G W, Qiu B J, Xie J J, Lv Z C, Li Y M. Design and test of grain mass flow measurement device. Journal of Agriculture Mechanization, 2012; 3: 155–158.

Chou H Z, Chen S R, Zhang L L. Design and test of cereal production, intelligent yield monitor. Journal of Agriculture Mechanization, 2013; (2): 130–133. (in Chinese with English abstract)

Chen S R, Yang H B, Li Y M, Hu J W, Zhang L L. Experiment of dual-plates differential impact-based grain flow sensor. Transactions of the CSAM, 2010; 41(8): 171–174. (in Chinese with English abstract)

Zhou J, Cong B, Liu C. Elimination of vibration noise from an impact-type grain mass flow sensor. Precision Agriculture, 2014; 15(6): 627–638.

Chen Q W, Han Z D, Cui J W, Wang G X, Qiao X D, Zhang Z R, et al. Development status and trend current situation of self-propelled combine harvester. Journal of Agricultural Science and Technology, 2015; 17(1): 109–114.




Copyright (c)



2023-2026 Copyright IJABE Editing and Publishing Office