Research on ultrasonic-based long-distance and sub-millimeter real-time ranging system

Zhisheng Wang; Jun Cui; Liang Liu; Junning Cui

doi:10.1117/12.2641532

4 August 2022 Research on ultrasonic-based long-distance and sub-millimeter real-time ranging system

Zhisheng Wang, Jun Cui, Liang Liu, Junning Cui

Proceedings Volume 12306, Second International Conference on Digital Signal and Computer Communications (DSCC 2022); 123060A (2022) https://doi.org/10.1117/12.2641532
Event: Second International Conference on Digital Signal and Computer Communications (DSCC 2022), 2022, Changchun, China

Abstract

Towards solving the problem that ultrasonic ranging studied in the past was difficult to reach sub-millimeter accuracy in long-distance ranging. In this paper, after analyzing principles of ranging, a system based on the cross-correlation algorithm and an ultrasonic synchronous transceiver platform had a 192 kHz high sampling rate was designed. First, an ultrasonic transceiver platform was designed as a USB audio system with a sound card as the core. Second, a reverse design idea was introduced into the FPGA software to design the accurate clock system, to achieve 192 kHz high sampling rate and transceiver synchronization. Third, to improve the accuracy and stability of ranging, a valid method was proposed to eliminate the jitter of real-time cross-correlation peaks based on this platform. Finally, we conduct extensive experiments, the results show that the range median error is only 0.95 mm in the range of 4.2 m.

Citation Download Citation

Zhisheng Wang, Jun Cui, Liang Liu, and Junning Cui "Research on ultrasonic-based long-distance and sub-millimeter real-time ranging system", Proc. SPIE 12306, Second International Conference on Digital Signal and Computer Communications (DSCC 2022), 123060A (4 August 2022); https://doi.org/10.1117/12.2641532

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