摘要
【目的】为满足土壤环境信息的自动监测,适时了解土壤环境情况,及时分析土壤温湿度、光照等对农作物生长发育的影响,实现土壤环境信息的快速检测,设计一种基于蓝牙技术的土壤环境信息传感器。【方法】以STM8L051F3P6单片机为控制芯片,利用平行板电容探针、温度传感器、空气温湿度传感器、光敏电阻作为主要检测部件设计检测电路,分别检测土壤湿度、土壤温度、土壤周围的空气温湿度和光照强度,采用单节锂离子电池作为供电电源,同时将单片机与蓝牙通讯技术相结合,实现对被测区域土壤环境信息的实时监测。根据农业标准土壤水分测定法,配备不同土壤湿度样品,标定土壤湿度。【结果】完成土壤环境信息传感器的软硬件整体设计与土壤湿度标定试验:(1)信息采集,即土壤环境信息传感器通过各个模块的硬件检测电路实现土壤环境信息包括土壤温湿度、土壤周围空气温湿度、光照情况的实时采集;(2)数据处理,即该传感器将采集的原始信息数据经过单片机处理后实现土壤环境信息检测;(3)数据发送,即通过蓝牙技术将检测结果发送至用户端显示;(4)土壤含水率的标定,即采用设计的土壤环境信息传感器进行了土壤湿度标定试验,在土壤湿度0%~25%内建立输出电压值与土壤湿度之间的关系模型,模型的决定系数为0.9352。【结论】设计的土壤环境信息传感器系统运行良好,能准确顺利地发送检测数据。土壤湿度标定试验结果表明,土壤环境信息传感器检测电压值对土壤湿度之间有良好的线性关系。整个传感器系统成本较低,易于制作,能保持长时间的使用。该传感器的测量范围也能满足大部分农业生产的需求,具有一定的实用价值。
[Objective]In order to meet the automatic monitoring of soil environment information,understand the soil environment conditions in a timely manner,analyze the effect of soil temperature,humidity,light and on crop growth and development and realize the rapid detection of soil environment information,a soil environment information sensor based on bluetooth technology was designed.[Method]Using STM8L051F3P6 microcontroller as the control chip,and parallel plate capacitor probe,temperature sensor,air temperature and humidity sensor,and photoresistor were used as the main detection components to the detection circuit,which respectively detected soil moisture,soil temperature,air temperature and humidity and light intensity around the soil,A single lithium-ion battery was used as the power supply.The single chip microcomputer and bluetooth communication technology were combined to realize the real-time monitoring of soil environmental information in the measured area.According to the agricultural standard soil moisture determination method,different soil moisture samples were prepared to calibrate soil moisture.[Result]The overall design of the hardware and software of the soil environment information sensor and the calibration test of soil moisture were completed:(1)Information collection.The soil environment information sensor realized real-time collection of soil environment information,including soil temperature and humidity,soil ambient air temperature and humidity,light conditions through the hardware detection circuit of each module;(2)Data processing.The sensor collected the original data after single-chip microcomputer processing to realize soil environment information detection;(3)Data transmission.Detection results were sent to the client for display through bluetooth technology;(4)Calibration of soil moisture content.The calibration test of soil moisture was conducted by using the designed soil environmental information sensor,and the relationship model between the output voltage value and soil moisture was established in the range of 0-25%of soil moisture.The coefficient of determination of the model was 0.9352[.Conclusion]The soil environment information sensor system designed in this study works well,and it can send detection data accurately and smoothly.The results of soil moisture calibration test showed that the voltage value of soil environmental information sensor designed in this study has a good linear relationship with soil moisture.The cost of the entire sensor system is low.It is easy to manufacture,and it can be used for a long time.The measuring range of the sensor can also meet the needs of most agricultural production,and it has a certain practical value.
作者
杨梅
刘木华
朱霏雨
黄双根
袁海超
赵进辉
YANG Mei;LIU Muhua;ZHU Feiyu;HUANG Shuanggen;YUAN Haichao;ZHAO Jinhui(College of Engineering,Jiangxi Agricultural University,Nanchang 330045,China;Jiangxi Key Laboratory of Modern Agricultural Equipment,Nanchang 330045,China)
出处
《江西农业大学学报》
CAS
CSCD
北大核心
2023年第4期963-971,共9页
Acta Agriculturae Universitatis Jiangxiensis
基金
江西省重点研发计划项目(20212BBF61014)。
关键词
传感器
土壤
环境信息
蓝牙技术
sensor
soil
environment information
bluetooth technology
