论文信息 - FPGA based time-of-flight 3D camera characterization system

FPGA based time-of-flight 3D camera characterization system

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.

Horst Zimmermann | Michael Hofbauer | Milos Davidovic | Johannes Seiter

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