A Laser-Based Device for Work Site Stability Assessment

用于工作现场稳定性评估的激光设备

• 批准号: 7109905
• 负责人: XIAOQING SUN
• 金额: $ 38.65万
• 依托单位: AAC INTERNATIONAL
• 依托单位国家: 美国
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-07-01 至 2008-07-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7109905
• 关键词: artificial intelligence; bioengineering /biomedical engineering; data collection methodology /evaluation; human mortality; injury prevention; interferometry; lasers; mechanical stress; minings; monitoring device; occupational hazard; occupational health /safety; sound perception; technology /technique development; ultrasonography; work site

DESCRIPTION (provided by applicant): Summary: A laser-based acoustic emission (AE) detection device is proposed for work site structural stability assessment. This new device will take advantage of innovations in laser ultrasonics, artificial intelligence (Al) and advanced acoustic emission technology to provide mine workers with a unique instant, real time stability assessment of immediate rock structures in the working environment, which was not attainable in the past. Nonlinear optical interferometry based on two-wave mixing / photo-induced electromotive force techniques will be used for AE signal detection from rock structures in mine sites. Al criteria will be established by wave pattern recognition to identify unstable areas in mine sites. This research will also result in a unique non-contact monitoring device for acoustic emission/microseismic studies, which will be very useful in many areas of application. The primary objective of the Phase II research is to develop the prototype of the AE detector and test it in real-world mining facilities. The primary objective consists of six specific aims: 1. instrumentation development, 2. pre-field experiment preparation, 3. in-situ data collection, 4. Al criteria development, 5. system integration and in-situ trial, and 6. documentation and reporting. Relevance to Public Health: The innovation will contribute to a reduction the occupational injuries and fatalities caused by roof falls, sidewall crumples, stope collapses, and slope slides, etc., in the mining industry. The research and development addresses the miner's safety and contributes to ensuring the mineworker's right to "safe and healthful working conditions" (Occupational Safety and Health Act of 1970).

概述：提出了一种基于激光的声发射（AE）检测装置，用于工地结构稳定性评估。这种新设备将利用激光超声、人工智能（Al）和先进声发射技术的创新，为矿工提供独特的即时、实时的工作环境中岩石结构稳定性评估，这在过去是无法实现的。基于双波混频/光致电动势技术的非线性光学干涉测量将用于矿井岩体结构声发射信号的探测。利用波型识别技术建立矿井不稳定区识别准则。该研究还将产生一种独特的用于声发射/微地震研究的非接触式监测装置，这将在许多领域的应用中非常有用。第二阶段研究的主要目标是开发声发射探测器的原型，并在实际采矿设施中进行测试。主要目标包括六个具体目标：2.仪器仪表开发；2 .田间试验前准备；3 .现场数据采集；标准开发，5。5 .系统集成及现场试验；文档和报告。与公共卫生的相关性：这项创新将有助于减少采矿业中因顶板倒塌、侧壁塌陷、采场坍塌和边坡滑坡等造成的职业伤害和死亡。研究和发展涉及矿工的安全问题，有助于确保矿工享有“安全和健康的工作条件”的权利（1970年《职业安全和健康法》）。