植物叶片颜色及生态环境参数无线数据采集系统的设计

【目的】设计一套植物叶片颜色及生态环境参数无线数据采集系统，为研究生态环境参数变化对植物生长的影响提供技术支持。【方法】采用C8051F330单片机配合TCS230颜色传感器、温湿度传感器、光照传感器及nRF24L01+无线收发模块，组成无线数据采集节点，与带有无线接收节点的PC计算机结合，构建植物叶片颜色及其生态环境参数的无线数据采集系统。【结果】利用所建立的无线数据采集系统，可将从数据采集节点所采集的数据通过无线通信方式实时传送到PC计算机，在开阔地无干扰条件下通信距离可达100 m，可设置多个数据采集节点，数据也能以脱机的方式保存于节点的存储器中，按每个记录4个参数，一次可保存6 400个数据记录，再集中传送到PC计算机中。【结论】设计的无线数据采集系统能可靠地获得长期的植物叶片颜色数据以及对应时间的温湿度和光照等环境参数，且无线通信方式具有线路铺设简单、灵活、经济及数据通信可靠等优点，同时可进行多点数据采集，能显著提高研究工作效率。

Plant leaf color and ecological environment parameters of a wireless data acquisition system

【Objective】 In this study,we designed a wireless instrument to monitor the color of plant leaves and parameters of environment of plants.By this device,researchers can monitor the change of conditions and environments of plants,furthermore evaluate the effectiveness of this change to plants.【Method】 Based on C8051F330 single chip computer system,we integrated TCS230 color sensor,temperature and humidity sensor,and a light sensor with nRF24L01+wireless transceiver module to make up the wireless data acquisition node.We combined the wireless data receiving node with PC computer to construct the whole system.【Result】 Using the above system,users can not only obtain the real-time data of the color of leaves and the environment of plants,but also transform the data to PC.Under open field conditions,the capability of communication distance of our system is 100 meters.In this range,users can arrange several monitoring points.With good data saving capability(about 6 400 sets data in each point),the data can also be stored at monitoring points.【Conclusion】 Wireless data acquisition system can reliably obtain long term plant leaves color data,and the temperature,humidity and illumination of environment parameters of corresponding time point.Compared with line laying systems,the wireless communication system is simple,flexible,economic and reliable.With this researchers can get multi-point data and improve the work efficiency significantly.