透射率法实时检测农药浓度的实验研究  

The Experimental Study on Real-time Determination of Pesticide Concentration by Transmission Rate Method

作　　者：潘玉凯[1,2] 邱白晶[1,2] 殷磊[1,2] 

机构地区：[1]江苏大学现代农业装备与技术省部共建教育部重点实验室/江苏省重点实验室,江苏镇江212013 [2]江苏大学生物工程研究院,江苏镇江212013

出　　处：《农机化研究》2013年第3期171-173,179,共4页Journal of Agricultural Mechanization Research

基　　金：江苏省高校自然科学研究重大项目(10KJA470007);教育部博士学科点基金项目(20093227110008);江苏省农机三项工程项目(NJ2010-15;NJ2010-12);江苏高校优势学科建设工程项目(苏财教﹝2011﹞8号);江苏省农业装备与智能化高技术研究重点实验室项目(BM2009703)

摘　　要：为了满足植保机械精确精量喷雾的发展需求,解决现有农药浓度检测方法的取样弊端,采用了一种透射率法来实现农药浓度的实时检测。该方法利用激光二极管作为激发光源,光电池作为光电探测器并通过I/V转换电路将光电池短路电流转化为电压值,由数显电压表终端显示。在对7组标准溶液进行电压—浓度的标准指数衰减曲线拟合实验中,拟合度为0.993 5。通过误差分析试验可以将检测误差控制在±4%以内,表明该农药浓度实时检测的方法可靠,稳定性高。In order to meet development needs of the plant protection machinery with precise spray, and to solve the sam- pling drawbacks in the method of determination of pesticide concentration. This paper use a method with transmission rate to achieve real-time determination of pesticide concentration. This way uses a laser diode as the excitation light source, photovoltaic cells as a photodetector and through the I/V switching circuit conversion short-circuit current into voltage value, the digital voltmeter as terminal display device. Through 7 groups of standard solution voltage-concentration ＇ s standard index attenuation curve fitting, fitting degree is 0. 9935. By the error analysis test shows that the detection error is controlled within ±4%. So the real-time detection method of pesticide concentration is reliable and high stability.

关 键 词：农药浓度 实时检测 透射率法 

分 类 号：S499[农业科学—植物保护]