A Remote High Precision Data Acquisition System through Internet Transmission

This paper presents a remote high precision data acquisition system with ARM (S3C2451) as the main-controller and microcontroller (AT89S52) as the co-controller and Internet as the transmission media. The control terminal issues commands to the data acquisition system through Internet transmission. The main-controller is responsible for identifying these commands and commanding the co-controller to realize the data acquisition, restoring and demarcation and the memorizer to receive, package, save and upload the acquired data. The co-controller is responsible for operating the relays to implement device restoring and demarcation and acquiring the input voltage or current signal and returning the A/D conversion result. In conclusion, the experiment proves that remote high-precision data acquisition, display and downloading are realized with 14 bits effective precision.