Abstract: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.