Android平台下农业无线混药系统的研究与实现

发布时间：2018-01-16 02:07

本文关键词：Android平台下农业无线混药系统的研究与实现　出处：《东北大学》2014年硕士论文　论文类型：学位论文

【摘要】：当前,国内外农用系统正向着高效、精准、电子化的方向发展,但国内大部分农田打药机混药系统为预混式,即混药人员按照比例将农药与水装入打药箱中,均匀搅拌。在人工手动混合的操作方式下,农药直接或间接地接触到人体,这种情况严重影响着身体健康,同时空气室、药箱与农药的接触会产生严重的腐蚀,此类原因导致整机寿命降低,另外,在药液的清洗过程中人体与药液会长时间接触,容易带来致癌风险,环境污染也会因为残存农药的处理而变得更加严重。为了避免先前混药方式给环境和非目标生物带来的污染、施药人员的健康威胁以及喷药机械的寿命缩短,液药与水的在线混合、混药与喷药器械的自动化操作方式是现代农业技术研究的重要方向。本文研究和开发了一款农业混药系统。首先依据系统要求选择相关的硬件,对WiFi模块进行系统刷入和改装,验证流量计的工作方式和稳定性,设计继电器模块,随后根据硬件的控制方式对单片机程序进行设计,使其接收到控制信息后便改变外围硬件的工作状态,处理传感器的反馈指令,此外,对基于Android操作系统的上位机软件进行开发,为用户提供可视化的应用界面和便捷的操作方式。安卓设备与WiFi模块通过Socket通信进行控制信息的传输,WiFi模块与单片机串口连接通信。整个设计完成了药水分离下的实时混合、实时监控和对喷幅的控制。最后对系统WiFi信号进行采集和处理,使信号更加稳定,通过Fluent对混药器运作时流体的参数进行仿真对比,对系统进行优化,选择最优设备,使系统实现无人化和机器人化的发展目标,适应农业发展的新形式。
[Abstract]:At present, agricultural systems at home and abroad are developing in the direction of high efficiency, precision and electronization. However, most of the mixing system of agricultural drug dispenser in China is premixed, that is, the pesticide and water are put into the dispenser in proportion by the mixers. In manual mixing, pesticides directly or indirectly contact the human body, which seriously affects the health of the body. At the same time, the contact of air chamber, medicine box and pesticide will cause serious corrosion. This kind of reason causes the whole machine life to reduce, in addition, in the medicine liquid cleaning process the human body and the medicine liquid will contact for a long time, easy to bring the carcinogenic risk. Environmental pollution is also aggravated by the treatment of residual pesticides. In order to avoid the pollution of the environment and non-target organisms caused by the previous mixing methods, the health threat of the applicator and the life span of the spraying machinery are shortened. On-line mixing of liquid and water. The automatic operation mode of mixing and spraying equipment is an important direction of modern agricultural technology research. This paper studies and develops an agricultural mixing system. Firstly, according to the system requirements, select the related hardware. The WiFi module is brushed in and refitted to verify the working mode and stability of the Flowmeter, and the relay module is designed, and then the single chip microcomputer program is designed according to the control mode of the hardware. After receiving the control information, it changes the working state of the peripheral hardware and processes the feedback instructions of the sensor. In addition, the host computer software based on the Android operating system is developed. Provide users with visual application interface and convenient mode of operation. Android devices and WiFi module through Socket communication control information transmission. WiFi module and MCU serial port communication. The whole design completed the real-time mixing, real-time monitoring and spraying control under the separation of potions. Finally, the system WiFi signal acquisition and processing. To make the signal more stable, the fluid parameters of the mixer are simulated and compared by Fluent, the system is optimized and the optimal equipment is selected, so that the system can realize the goal of dehumanization and robotization. To adapt to the new forms of agricultural development.
【学位授予单位】：东北大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：S49;TN92

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