接收所测环境的温度和湿度信号检测人员可以通过LCD显示的数据，实时监控环境的温度和湿度情况，如果检测到的数据超过所设定的温湿度上下限，则系统会自动产生相应的声光报警。所有的测量操作都可以通过主机控制软件来实现，温度和湿度传感器得到的测量信号，经电路转换为电信号，然后通过转换送到单片机进行数据处理，经软件分析处理后送显示装置。
本系统包括系统硬件和软件设计，可靠性高，结构简单，系统还应用RS232与上位机相连接，可以设置自动记录温度、湿度的相关的参数，也可以设置每隔一定的时间自动记录，操作简便，应用广泛
关键词STC89C52单片机，温湿度传感器，LCD显示
Abstract
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