Design and implementation of signal acquisition system based on wireless transmission

This paper designs and develops a signal acquisition system based on wireless transmission, analyzes the system´s principle and structure, and gives the design of hardware in detail. The system includes wireless data acquisition units and a wireless data receiver unit. The data acquisition unit realizes signal acquisition, tem-storage and communication with the receiver unit, which uses STR-30 as wireless transmission module, ADS774 as acquisition chip, MAX813L chip to realize power-on reset and watchdog reset, and realize monitoring supply voltage. The receiver unit uses dual serial port MCU W77E58 to achieve communication with PC and acquisition units. Finally it designs the system software, and gives the wireless transmission protocol and system workflow.