分布式远程温湿度智能监控系统的设计与研究_大学生毕业设计论文.doc

分布式远程温湿度智能监控系统的设计与研究CAN 总线；STC89C52RC 单片机；DS18B20；SJA1000控制器；MCP2515控制器；DESIGN AND RESERCH OF DISTRIBUTED INTELLIGENT REMOTE TEMPERATURE AND HUMIDITY MONITORING SYSTEM Abstract Nowadays many large companies have multiple warehouses. All of the warehouses are scattered in different locations, which is difficult for us to monitor the temperature and humidity of the warehouses. Due to the traditional wiring of temperature and humidity monitoring system is cumbersome and transmission distance is limited, the practical problems can not be solved .Currently; the main development direction of the distributed control system is a computer-control system. In this paper, the use of CAN bus communication has been widely used in the design of the monitoring system, CAN bus communication system has immunity, control of multi- node communication distance and other characteristics. In the design, the mainly simulated two-node communication, the host connect to the CAN bus through bus controller MCP2515 and driver SJA1050,the sub-host also connect to the CAN bus through controller SJA1000 and driver 82C250. Then the sub-host detects the current temperature and humidity and deliver the data to the STC89C52RC microcontroller. When the host receive the signal from the host, it will give the corresponding temperature display and alarm operation. This paper mainly analyzed the advantages and disadvantages of various monitoring systems in various occasions and reached the most reasonable monitoring system design. Designed a monitoring system based on CAN bus, realized the application in different occasions of a multi-node, harsh environment, communication distance. This paper introduced the hardware and software design of various chip, sketch their design and research ideas, then designed the most simple and economical system. Keywords: CAN bus; STC89C52RC microcontroller; DS18B20; SJA1000 controller; MCP2515 transceiver目 录 第1章 绪论 1 1.1 课题背景及其意义 1 1.2 国内外研究现状 1 1.2.1 基于RS485总线的监控系统 2 1.