基于SOPC的远程多通道数据采集系统设计

Design of the remote multi-channel data acquisition system based on SOPC

讨论一个低成本、便携式、远程多通道数据采集系统的设计,分别介绍了系统结构、软硬件设计、NiosII系统模块结构等。数据采集系统主要由信号采集模块、数据处理模块和数据传输模块构成。信号采集模块包含温度、湿度、气压、雨量、风向、风速6个气象数据采集模块、全球定位系统(GPS)模块和电荷耦合器件(CCD)模块;数据处理模块中采用ALTERA公司的EP3C25F324现场可编程门阵列(FPGA)芯片,具有片上可编程系统(SOPC)集成度高、灵活性强的特点;数据传输模块采用通用无线分组业务(GPRS)和有线RS232两种方式传输数据。设计验证仿真表明,完全满足预期要求。

This study discussed a low cost, portable, remote multi-channel data acquisition system design, and introduced the system structure, software and hardware design and Nios II system module structure, etc. The data acquisition system contained signal acquisition module, data processing module and data transmission module. The signal acquisition module contained a data acquisition module that measured six meteorological parameters—temperature, humidity, air pressure, rainfall, wind direction and wind velocity, a Global Position System（GPS） module and a Charge Coupled Device（CCD） module. FPGA（Field Programmable Gate Array） chip EP3C25F324 of ALTERA was adopted in the data processing module, characterized by high integration and flexibility of the System On Programmable Chip（SOPC）. The data transmission module transmitted data by using two ways of General Packet Radio Service（GPRS） wireless and RS232 cable. Verifying simulation results completely met expected design requirements.