Remote image acquisition and synchronization system based on FPGA and bluetooth

An image acquisition and synchronization control system based on FPGA (Field Programmable Gate Array) and bluetooth is studied in this paper. FPGA as the main controller is responsible for USB (Universal Serial BUS) interface, command analyze, delay control, and trigger signal generation. Trigger signal can be RS485 or TTL. RS485 signals can be used for long-distance transmission without distortion while TTL is suitable for near field. The system's delay accuracy reached to 10 ns. Images can be obtained via GigE Ethernet. Meanwhile, a PC graphical control software is developed by LabVIEW. Based on the Bluetooth BLE 4.0 protocol, an Android mobile phone APP is developed for wireless control. (authors)