Abstract
A high-speed serial data transmission method based on the RS-485 bus was developed using FPGA technology to implement the high-speed remote long wire transmission for industrial systems. The effects of the RS-485 bus on the data transmission are analyzed with the peripheral interface circuits then determined by pulse transmission experiments. The rising/falling edges of the serial signals are used as the start symbols for the high-speed clock sampling to enable bit synchronization. The 8 B/10 B encoded data streams make time-clock recovery and data frame synchronizations feasible. Data transmission experiments using a twisted-pair cable show that the system provides high-speed remote data transmission along a 220 m twisted-pair cable at transmission rates of up to 20 Mb/s with an error rate of 10-11, which offers an effective transmission method for monitoring data collected in the field.
| Original language | English |
|---|---|
| Pages (from-to) | 684-687 |
| Number of pages | 4 |
| Journal | Qinghua Daxue Xuebao/Journal of Tsinghua University |
| Volume | 49 |
| Issue number | 5 |
| State | Published - May 2009 |
| Externally published | Yes |
Keywords
- High speed
- RS-485 bus
- Remote data transmission
- Serial communication