Development of low cost micromirror based laser vibrometer for measuring underwater transducer's vibrator

开发用于测量水下传感器振动器的低成本微镜激光振动计

• 批准号: 490681-2015
• 负责人: He, Siyuan
• 金额: $ 1.82万
• 依托单位: Ryerson University
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=586575
• 关键词: Development; low; cost; micromirror; based

Acoustics wave system is widely used for underwater communication, navigation, ocean mapping and fishery. An underwater acoustic wave system consists of a sound generator (projector) and a sound receiver (hydrophone) or one transducer with both sound generation and receiving functions. An underwater acoustic transducer is composed of the vibrator (core component of a transducer), rubber boot or sealing adhesive and housing. In order to achieve the effective and efficient optimization of the transducer, the vibration (vibration amplitude of each point of the vibrator surface) of the vibrator needs to be experimentally obtained for design verification and optimization iteration. Currently the scanning laser vibrometer can meet the performance requirement (both accuracy and scanning function). But its price ($150,000 ~ $300,000) is too high to be affordable to small and midsize business because it is for the precise vibration measurement of large parts with the performance several orders of magnitude higher than the requirements for measuring the transducer's vibrator. This project will develop a low cost micromiror based laser vibrometer for measuring the transducer's vibrator, in which a micromirror is integrated with a low cost single point laser vibrometer to realize scanning function. The system consists of a single point laser vibrometer with accuracy satisfying the requirement and low cost, a 2D rotation micromirror, a control circuit, and the extraction software. The micromirror's steering and the single point vibrometer's measurement are synchronized to realize scanning function. The micromirror based laser vibrometer can meet both the performance and cost requirements for direct measuring the vibration of an underwater transducer's vibrator, which can be afforded by the industrial partner to optimize its underwater acoustic transducers for better performance to improve their competitiveness.

声波系统广泛应用于水下通信、导航、海洋测绘和渔业。 水下声波系统由声音发生器（投射器）和声音接收器组成 （水听器）或具有发声和接收功能的换能器。水下声学 传感器由振动器（传感器的核心部件）、橡胶套或密封胶和 住房。为了实现换能器的有效、高效的优化，振动（振动 振动器的振动器表面各点的振幅）需要通过实验获得以进行设计 验证和优化迭代。目前扫描激光测振仪可以满足性能要求 要求（精度和扫描功能）。但它的价格（$150,000 ~ $300,000）太高了 中小型企业负担得起，因为它用于大型零件的精确振动测量 性能比测量传感器的要求高几个数量级 振动器。该项目将开发一种基于低成本微镜的激光振动计，用于测量传感器的 振动器，其中微镜与低成本单点激光测振仪集成，实现扫描 功能。该系统由单点激光测振仪组成，精度满足要求， 低成本、二维旋转微镜、控制电路和提取软件。微镜的转向 与单点测振仪的测量同步，实现扫描功能。微镜 基于激光测振仪可以满足直接测量振动的性能和成本要求 水下换能器的振动器，可由工业合作伙伴提供以优化其 水声换能器获得更好的性能以提高其竞争力。