Wu Jun, Wang Haiwei, Guo Ying, Hong Guanglie, He Zhiping, Xu Weiming, Shu Rong. Resources-limited FPGA based-multi-channel TDC system[J]. Infrared and Laser Engineering, 2015, 44(4): 1208-1217.
Citation: Wu Jun, Wang Haiwei, Guo Ying, Hong Guanglie, He Zhiping, Xu Weiming, Shu Rong. Resources-limited FPGA based-multi-channel TDC system[J]. Infrared and Laser Engineering, 2015, 44(4): 1208-1217.

Resources-limited FPGA based-multi-channel TDC system

  • Based on Xilinx XC2V3000 chip, a multi-channel irradiation resistance enhanced (Time-to-Digital Converter, TDC) system was designed. 16-channel high-precision time measurement was achieved within 2 FPGAs in a single board. With multi-redundant delay-chain structure, each measuring channel consisting of three physical timing links, and the anti-SEU ability was enhanced by triple modular redundancy. The channel uniformity calibration correction technology was applied to solve the multi-channel uniformity issues. Experimental results prove that the system meets the requirements of a 3D imaging laser radar, with an accuracy of 62.9 ps and a good uniformity. Meanwhile, the technical solution provides has a character of low power consumption, light weight etc.
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