基于物联网的电动自行车充电过程监测系统

为了进一步加强对高校电动自行车充电过程的监测，方便电动自行车用户和电池研究者获取充电数据，设计了基于物联网的电动自行车充电过程监测系统。系统主要依靠ZigBee模块局域组网，STM32通过网络向各IM1281B模块下达控制指令，实现对多台电动自行车充电数据的采集与汇总，通过WiFi模块将汇总数据上传到云服务器，微信小程序获取云服务器实时信息实现用户交互，数据公开网站存储长期充电数据为电池研究者提供大量数据。实验结果表明：ZigBee模块组网范围为150 m,满足高校内电动自行车充电点的组网距离要求，采集到的充电数据通过标准的电工数字钳形表VC866A校准，相对误差小于3%。系统成功实现对多台电动自行车充电数据的采集、传输、存储以及显示。

Electric bicycle charging process monitoring system based on IOT

In order to further strengthen the monitoring of university electric bicycle charging process and facilitate electric bicycle users and battery researchers to obtain charging data, an electric bicycle charging process monitoring system based on the IoT was designed. The system mainly relies on Zigbee module for local networking. STM32 issues control commands to each IM1281B module through the network to collect and aggregate charging data of multiple electric bicycles. The summarized data is uploaded to the cloud server through the WiFi module, and the WeChat mini program obtains real-time information of the cloud server to realize user interaction. Open data sites store long-term charging data and provide battery researchers with a wealth of data. The experimental results show that the networking range of ZigBee module is 150 m, which meets the networking distance requirements of electric bicycle charging points in universities. The charging data collected is calibrated by standard electrician digital clamp meter VC866A, and the relative error is less than 3%. The system successfully realizes the collection, transmission, storage and display of charging data of multiple electric bicycles.