Automatic Friction Coefficient Measurement System Based on Parallel Four-bar Mechanism

doi:10.14088/j.cnki.issn0439-8114.2019.02.027

Abstract

Abstract: ： For rapid, accurate and easily measure static sliding friction coefficient of different agricultural materials, combined with the Arduino UNO MCU and bluetooth remote control technology, developed a kind of mobile phone bluetooth wireless remote control based on parallel four-bar linkage grain friction coefficient measurement device automatically. The results showed that compared with conventional measuring equipment verify that the device can quickly, easily and accurately measure the different agricultural material relative to the material plane of static sliding friction Angle and coefficient of friction, can be chosen for the seed selection, litter eye, power to choose, and various cleaning components, as well as the kind of guide plate Angle type, type of hole and slot Angle on the location and transportation, shipping parts design provides the necessary basic parameters. For rapid, accurate and easily measure static sliding friction coefficient of different agricultural materials, combined with the Arduino UNO MCU and bluetooth remote control technology, developed a kind of mobile phone bluetooth wireless remote control based on parallel four-bar linkage grain friction coefficient measurement device automatically. The measuring principle, theoretical analysis, design of motion mechanism and integrated design of control module of the device are described. Beans, coriander, green vegetables and spinach seeds were selected for the experiment. Compared with conventional measuring equipment verify that the device can quickly, easily and accurately measure the different agricultural material relative to the material plane of static sliding friction Angle and coefficient of friction, can be chosen for the seed selection, litter eye, power to choose, and various cleaning components, as well as the kind of guide plate Angle type, type of hole and slot Angle on the location and transportation, shipping parts design provides the necessary basic parameters.

Key words: parallel four-bar mechanism, bluetooth remote control, static sliding friction coefficient, measurement device

CLC Number:

S237

LI Zhao-dong, ZHANG Xu, ZHANG Miao-miao, WANG Rong, HAN Jian-feng, LIU Jia-bai. Automatic Friction Coefficient Measurement System Based on Parallel Four-bar Mechanism[J]. HUBEI AGRICULTURAL SCIENCES, 2019, 58(2): 120-124.

References 17

[1]	张民,姚珺,李明.种子休止角与静滑动摩擦系数测量仪[J].农业装备与车辆工程,2012,50(11):43-45.
[2]	程红胜,李长友,麦智炜.一种农业物料滑动摩擦系数测量装置的设计[J].延边大学学报,2011,33(1):55-59.
[3]	KOOCHEKT A,RAZAVI S M A,MILANIE,et al.Physical properties of watermelon seed as a function of moisture content and variety[J].Int Agrophysics,2007,21:349-459.
[4]	MAKANJUOIA G A.A study of some of the physical properties of melonseeds[J]. Journal of Agricultural Engineering Research,1972,17(1):128-137.
[5]	武少文. 摩擦系数测定仪的研制[J].实验技术与管理,2000, 17(4):62-64.
[6]	许启铿,王录民,王丽坤.粮食专用直剪仪的研制[J].实验技术与管理,2009(12):62-64.
[7]	冯家畅,程绪铎,严晓婕.大豆与仓壁材料摩擦系数的研究[J].大豆科学,2014(5):790-793.
[8]	蒋蘋,胡文武,谢方平,等.高精度散粒物料摩擦角和休止角测量仪设计[A].纪念中国农业工程学会成立30周年暨中国农业工程学会2009年学术年会(CSAE2009)论文集[C].北京:中国农业工程学会,2009.
[9]	彭飞,杨杰,王红英.小麦粉摩擦特性的试验研究[J].中国粮油学报,2015,30(8):8-9.
[10]	涂文敏,唐跃,戴永平.变温条件下木塑原材料与金属滑动摩擦系数的测定与分析[J].工程塑料应用,2011,39(4):64-67.
[11]	张桂花,汤楚宙,熊远福,等.包衣稻种物理特性的测定及其应用[J].湖南农业大学学报,2004,30(1):68-70.
[12]	程晨. Arduino开发实战指南[M].北京:机械工业出版社,2012.33-47.
[13]	杨昆云. Arduino权威指南[M].北京:人民邮电出版社,2015.207-212.
[14]	陈红,贺俊林,江家伍,等.机械原理[M].北京:中国农业出版社,2015.
[15]	哈尔滨工业大学理论力学教研室.理论力学(1)[M].北京:高等教育出版社,2009.
[16]	石慧. Arduino程序设计指南[M].北京:电子工业出版社,2015.
[17]	杨作梅,郭玉明,崔清亮,等.谷子摩擦特性试验及其影响因素分析[J].农业工程学报,2016,32(16):258-260.