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、海洋测绘和渔业等领域。 水下声波系统由声波发生器（发射器）和声波接收器组成 （水听器）或具有声音产生和接收功能的一个换能器。水声 换能器由振子（换能器的核心部件）、橡胶靴子或密封胶组成， 住房为了实现换能器的有效和高效优化，振动（振动 振动器的振动器表面的每个点的振幅）需要通过实验获得用于设计 验证和优化迭代。目前扫描式激光测振仪的性能可以满足 要求（精度和扫描功能）。但它的价格（15万~ 30万美元）太高， 对于中小型企业来说是经济实惠的，因为它适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， 振动器本计画将发展一种低成本之微镜式雷射测振仪， 振动器，其中，微位移器与低成本的单点激光振动计集成以实现扫描 功能该系统由精度满足要求的单点激光测振仪和 低成本、二维旋转光栅、控制电路和提取软件。驾驶员的方向盘 单点测振仪的测量同步实现扫描功能。微镜 的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，这可以由工业合作伙伴提供，以优化其 水声换能器的更好的性能，以提高其竞争力。