仓库温湿度监测系统设计.doc

PAGE II 密级：公开 密级：公开 仓库温湿度监测系统设计 The Design of Storage Temperature and Humidity monitoring system 摘 要 仓库是用于存放物品的场所，其内部的温湿度能够直接影响储备物资的使用寿命和工作可靠性。传统的温、湿度测量方法采用测试器材，通过人工进行检测，这种人工测试方法费时费力。随着计算机的发展，单片机已经广泛的应用于各种仪器仪表，使之智能化，不仅可以提高测量的自动化程度和精度，还可以简化系统的的硬件结构，提高性价比。因而有必要研制仓库的自动温、湿度控制系统，以便实时检测仓库的温、湿度，并根据所测的数据控制加湿器、空调器等设备的运行，确保仓库有合适的温、湿度环境。 本设计仓库温湿度监测系统是以单片机为核心，配合温度和湿度传感器，以及相关的电路组成，可以接收仓库内的温度和湿度信号，检测人员通过仪器的液晶显示数据，实时监测环境的温度和湿度情况。所有的测量操作都可以通过主机控制软件来实现。该系统中采用新型的可编程温度传感器DS18B20，它是模拟温度传感器和信号处理电路的结合体，可以直接于单片机沟通，完成温度采集。湿度传感器选择性价比较高的HS1101，有高可靠性、线性度非常好、响应速度快等优点。由湿度传感器得到的非电量信号，经电路转换为电信号，然后送到单片机进行数据处理，经软件分析处理后送显示装置，完成时度采集。 该系统充分利用了单片机对数字信号的可控性和温湿度传感器准确性，并使用液晶显示，功能齐全且应用方便。不仅能提高了传统温湿度监测系统的性能，而且系统结构电路简单，可以广泛使用于距离远，节点分布多的场合。 关键词：温度；湿度；单片机； Abstract Temperature and humidity are important conditions for the warehouse where is a place to storage goods. And warehouse directly affects the life and the reliability of stockpile. The traditional method of temperature and humidity measurement is an artificial testing through test equipment. This is a time-consuming method. With the development of computer, SCM has been widely using in various instruments, the system not only improve measurement automation and accuracy and also simplify the hardware structure and improve the cost-effective. It is necessary to develop automated warehouse temperature and humidity control system for real-time detection of storage temperature and humidity. Then with the measured data controlling air conditioners or other equipment to ensure the proper temperature and humidity of storage environment. The design of storage temperature and humidity monitoring system is based on microcontroller , with the temperature and humidity sensors, and related circuit to receive the warehouse temperature and humidity signals, then testing personnel monitor the environment temperature and humidity through the instruments LCD display. All of the measurement operation can be host control by the software. The system uses DS18