说明：  介绍了基于USB串口多点温度采集系统总体方案。给出了系统的硬件组成，利用AT9S52作为主控制器实现数据上传到PC机进行处理。
(The general scheme of multi-point temperature acquisition system based on USB serial port is introduced. The hardware structure of the system is given. At9s52 is used as the main controller to upload data to PC for processing.)