佘晓涛毕设论文.docxVIP

居室环境监测系统设计摘要 生存环境的舒适与安全是人类永恒追求的物质目标。随着计算机技术、 通信技术、控制技术的飞速发展，人们对居住环境捉出了更高的要求。而环 境监测系统作为智能家居系统的一个重要组成部分，帮助人们实现家庭设备 与住宅环境的监控与管理，从I佃满足人类对居住环境的需求。通过居室环境 监测系统，用户可以实时获得居住环境的信息，如家庭的温度、湿度，室内 异常气体的监测等。 此居室环境实时监测系统，单片机80C51作为系统的核心，控制温度值、 湿度值的釆集、显示和报警。单线式温度传感器DS18B20.电容式湿度传感 器对温度湿度分别测量并通过数码管显示出来，当异常气体传感器MQ-5采 集到的值超过设置的异常气体浓度参数范围时，报警电路就会发出报警捉示。 温度传感器DS18B20是单线式、体积超小、硕件开销超低、抗干扰能力强、 精度高，可实时根据指令给岀温度数据，可读性高。所设计的系统具有可读 性高，稳定性高，反应速度快，测量值准确的特点。 关键词：单片机，数据采集，显示，传感器 The Room Environmental Monitoring System ABSTRACT The living environment of comfort and safety is the eternal pursuit of human material goals. With the rapid development of computer technology, communication technology, control technology, people put forward higher requirements of the living environment. Environmental monitoring system as an important part of the intelligent home furnishing system, to help people to realize the monitoring and management of household equipment and residential environment, so as to meet the demand of human living environment. Through the indoor environment monitoring system, the users can get the living environment of real-time information, such as temperature, humidity, family, indoor abnormal gas monitoring? Real-time monitoring system of the living environment, 80C51 single-chip microcomputer as the core of the system, control temperature, humidity value acquisition, display and alarm? Single temperature sensor DS18B20, capacitive humidity sensor to temperature and humidity were measured and displayed by the digital tube, when the abnormal gas sensors to collect the value of MQ-5 abnormal gas concentration parameters over a range of settings, alarm circuit will give an alarm. Temperature sensor DS18B20 is single, ultra small size, low hardware cost, strong anti-intcrfcrcncc ability, high precision, real time, real time according to the instructions given temperature data, readable. With the designed system readable, high stability, fast reaction speed, accurate measurement? KEY WORDS： MCU,