Title :
FPGA based time-of-flight 3D camera characterization system
Author :
Seiter, J. ; Hofbauer, Michael ; Davidovic, M. ; Zimmermann, Horst
Author_Institution :
Inst. of Electrodynamics, Microwave & Circuit Eng., Vienna Univ. of Technol., Vienna, Austria
Abstract :
In this paper we present an FPGA based characterization system for our 3D TOF distance sensors supporting up to 128 × 128 pixels. The system is capable of flexibly generating all control signals required for a typical TOF measurement. Their properties can be changed within a very broad range. The cycle-to-cycle jitter of those signals was reduced to 1 ps by ECL circuitry. This is equivalent to a standard deviation of the measured distance of 0.15 mm. Furthermore, the system is able to preprocess the distance information before transferring the data to a terminal PC, which reduces the data load on the USB interface. The system includes an averaging function with a maximum of 256 elements to reduce the standard deviation of precision distance measurement sensors. A novel fiber based setup is introduced to systemize the characterization process. By means of averaging a standard deviation of 2 mm could be achieved with one of our 3D TOF distance sensors.
Keywords :
cameras; distance measurement; field programmable gate arrays; jitter; 3D TOF distance sensors; ECL circuitry; FPGA; USB interface; cycle-to-cycle jitter; distance 0.15 mm; distance measurement sensors; time-of-flight 3D camera; Cameras; Clocks; Correlation; Field programmable gate arrays; Optical fibers; Sensors; 3D camera; FPGA; TOF sensor; characterization system; optical distance sensor; time-of-flight;
Conference_Titel :
Design and Diagnostics of Electronic Circuits & Systems (DDECS), 2013 IEEE 16th International Symposium on
Conference_Location :
Karlovy Vary
Print_ISBN :
978-1-4673-6135-4
Electronic_ISBN :
978-1-4673-6134-7
DOI :
10.1109/DDECS.2013.6549825
