Resources-limited FPGA based-multi-channel TDC system

Wu Jun; Wang Haiwei; Guo Ying; Hong Guanglie; He Zhiping; Xu Weiming; Shu Rong

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.

1. Laboratory of Space Active Electro-Optical Technology and Systems,Shanghai Institute of Technical Physics,Chinese Academy of Sciences,Shanghai 200083,China

Received Date: 2014-08-05

Rev Recd Date: 2014-09-15

Publish Date: 2015-04-25

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Abstract: 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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Resources-limited FPGA based-multi-channel TDC system

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