基于单片机的空气湿度检测系统设计.doc

摘 要 人体对生存环境的湿度有很高的要求，相对湿度以50%-70%为好，冬季最好不低于40%，夏季不大于80%。如果湿度过大，极易导致衣服皮革受潮发霉；电器及精密仪器受潮受损；春季细菌滋生，易诱发呼吸道疾病，风湿病；夏季人体散热困难，增加中暑机会；冬季会加速热的传导，使人倍觉寒冷。在科研单位或实验室，生产车间，如果环境湿度控制不好，也将对试验结果和产品质量造成极大的影响。因此，精确的湿度控制尤为重要。 本设计通过使用湿度传感器HIH3610完成湿度信号的采集，通过A/D转换电路将模拟信号转为数字信号后，送给单片机AT89C51,再由单片机，时钟电路、地址锁存芯片等对信号进行处理，最后由显示电路显示结果，报警电路实施报警，从而完成湿度检测系统的全部功能。软件设计部分采用汇编语言完成了系统的软件编写。 本设计的完成使一定空间内的环境湿度得到有效的控制与调节，满足了人体对环境湿度的要求，具有很高的价值。 关键词：湿度；单片机；传感器；报警 Abstract The human have a strict requirement of living environment with humidity, relative humidity of 50% to 70% for good, in winter the humidity not less than 40 percent is best, in summer not more than 80 percent. If the humidity level is too high, leather clothing exposed to moisture easily get to mould and the electrical and precision instruments exposed to moisture easily get to be damaged; in spring, breeding of bacteria and easy-induced respiratory diseases, rheumatism is common; in summer it’s difficult for human to radiate heat, increasing the chance of heat stroke; in winter, it will speed up the conduction of heat, making people feel chilling. In scientific research units, laboratories, or production plants, if humidity environment is not in control, it will also caused great impact to the test results and product quality. Therefore, the precise humidity control is particularly important. The design collect humidity signal through humidity sensor HIH3610, and the A/D converter circuit will translate analog signals into digital signals, later the digital signals will be sent to SCM AT89C51, The signals will be processed by the microcontroller, the clock-circuit chips, address latches, In the end the final result will be displayed by the show circuit, alarmed by the alarm circuits in order to complete all function of Humidity Detection System. Software design of the design is used to complete the compilation of the systems software capabilities. The completion of this system will be effective for humidity control and regulation to meet the