"基于AT89S52的多路数据采集系统设计与实现——远距离传输稳定性研究"

is main monolithic integrated circuit is responsible for data processing and display. In the communication between the main and subordinate monolithic integrated circuits, the international standard RS485 differential interface is used due to the transmission distance being greater than RS232 standard. This system realizes a practical multi-channel data acquisition system with strong stability for long-distance data collection and transmission. Keywords: AT89S52, ADC0809, RS485 differential interface In conclusion, the multi-channel data acquisition system designed in this paper utilizes dual monolithic integrated circuits for control, with both the main and subordinate units using the AT89S52 monolithic integrated circuit. The system is capable of gathering data from up to eight channels and responding to commands from the main unit. Data processing and display are carried out by the main unit, with communication between the main and subordinate units facilitated by the RS485 differential interface. This system represents a practical and stable solution for long-distance data collection and transmission.