Piezoelectrics & Acoustooptics, Volume. 46, Issue 5, 722(2024)

Bi-Directional Distance Detection Method Based on Dynamic pMUT

TAO Jinyan1...2,3, LI Jiadong2,3,4, DAI Ye1, SHANG Wenling2,3,5, WANG Danrui2,3,5, FENG Changkun2,3, HU Yimin2,3, YAO Shutao2,3,4, and TA Guifeng2,34 |Show fewer author(s)
Author Affiliations
  • 1The College of Science, Shanghai University, Shanghai 200072, China
  • 2Suzhou Institute of Nano-Tech and Nano-Bionics(SINANO), Chinese Academy of Sciences, Suzhou 215123, China
  • 3Key Laboratory of Multifunctional Nanomaterials and Smart Systems, Chinese Academy of Sciences, Suzhou 215123, China
  • 4School of Mechanical and Electrical Engineering, Changchun University of Science and Technology, Changchun 130012, China
  • 5School of Nano-Tech and Nano-Bionics, University of Science and Technology of China, Hefei 230026, China
  • show less

    Ultrasonic sensors are widely used inmobile robots for spatial perception. To extend the spatial perception range, current mobile robots often adopt a multi-sensor approach, resulting in a sensing system that is large in volume, high in power consumption, and complex in design. In this paper, wepropose a detection method based on a dynamic piezoelectric micromachined ultrasonic transducer (pMUT) that realizes bi-directional detection with a single device, effectively doubling the measurement range while maintaining a compact size and low power consumption. This method leverages the two-way vibration characteristics of the piezoelectric film to capture ultrasonic echoes in both directions, enabling distance measurements in two directions. Results indicate that the one-way measurement range remains unchanged with this method, while distances to obstacles in both directions can be accurately measured, reflecting their corresponding directions under dynamic conditions. This method simplifies the sensing system and is expected to play an important role in obstacle avoidance for measurement.

    Tools

    Get Citation

    Copy Citation Text

    TAO Jinyan, LI Jiadong, DAI Ye, SHANG Wenling, WANG Danrui, FENG Changkun, HU Yimin, YAO Shutao, TA Guifeng. Bi-Directional Distance Detection Method Based on Dynamic pMUT[J]. Piezoelectrics & Acoustooptics, 2024, 46(5): 722

    Download Citation

    EndNote(RIS)BibTexPlain Text
    Save article for my favorites
    Paper Information

    Category:

    Received: Jun. 8, 2024

    Accepted: Jan. 17, 2025

    Published Online: Jan. 17, 2025

    The Author Email:

    DOI:10.11977/j.issn.1004-2474.2024.05.019

    Topics