Title :
Research of high precision time interval measurement base on carry chain
Author :
Jia Yunfei ; Xu Mengqiang ; Kang Jin
Author_Institution :
Sch. of Mech. Eng., Nanjing Univ. of Sci. & Technol., Nanjing, China
Abstract :
The time interval measurement system with an average resolution of 65ps has been designed in an FPGA chip. The system combines direct pulse counting with digital interpolation using dedicated carry chain inside FPGA. In order to calibrate the time-to-digital converter (TDC), a statistics code density method is adopted. The paper particularly introduces the architecture of the system and the calibration of TDC. Experimental results show that the whole system can be operated simply and functions well.
Keywords :
field programmable gate arrays; interpolation; time measurement; time-digital conversion; FPGA chip; TDC; carry chain; digital interpolation; direct pulse counting; field programmable gate array; statistics code density method; time interval measurement system; time-to-digital converter; Calibration; Clocks; Delays; Educational institutions; Field programmable gate arrays; Random access memory; FPGA; calibration; carry chain; time interval; time-to-digital converter;
Conference_Titel :
Mechatronic Sciences, Electric Engineering and Computer (MEC), Proceedings 2013 International Conference on
Conference_Location :
Shengyang
Print_ISBN :
978-1-4799-2564-3
DOI :
10.1109/MEC.2013.6885160
