With the development of cities, more and more problems have been exposed, and the consumption concept of green travel has become more and more popular. The public Internet of Things electric bicycle system includes perception level, central control level, data processing level, system service level and system management level. Perception level is used to collect public bicycle equipment and citizen bicycle rental IC card information. The central control completes networking, sends and receives perception level information, and processes data conversion information. Data processing is used to create and manage system databases, as well as to classify and process data. All application functions related to users of the public bicycle system: The system management level is used to handle all operating system management and maintenance personnel related to the public bicycle system. Based on the analysis of the narrowband Internet of Things NB-IoT technology, this article combines the advantages of enhanced coverage, large links, low power consumption, and low cost of the technology, and adopts a three-layer architecture to propose an electric bicycle system based on NB-IoT. The current electric bicycle system has disadvantages such as poor real-time performance and high power consumption, and saves resources. Through experiments, the scale of the system can be dynamically configured, which greatly reduces the communication pressure on the system background, and at the same time makes the system's transmission rate of different communication distances reach 99% on average, and the average delay reaches 7s. The real-time performance of the system is still a certain problem.

随着城市的发展，越来越多的问题暴露出来，绿色出行的消费理念也越来越流行。公共物联网电动自行车系统包括感知层、中控层、数据处理层、系统服务层和系统管理层。感知层用于收集公共自行车设备和市民自行车租赁IC卡信息。中控完成组网，收发感知级信息，处理数据转换信息。数据处理用于创建和管理系统数据库，以及对数据进行分类和处理。与公共自行车系统用户相关的所有应用功能：系统管理层用于处理与公共自行车系统相关的所有操作系统管理和维护人员。本文在分析窄带物联网NB-IoT技术的基础上，结合该技术覆盖增强、链路大、功耗低、成本低等优点，采用三层架构提出电动自行车基于NB-IoT的系统。目前的电动自行车系统存在实时性差、功耗大等缺点，节约资源。通过实验，可以动态配置系统的规模，大大降低了系统后台的通信压力，同时使系统在不同通信距离的传输率平均达到99%，平均延迟达到7s。系统的实时性还存在一定的问题。