STTR Phase II: Active Fiber Optic Sensor Array for Cryogenic Fuel Monitoring and Management

STTR 第二阶段：用于低温燃料监测和管理的有源光纤传感器阵列

• 批准号: 0956816
• 负责人: Philip Swinehart
• 金额: $ 49.94万
• 依托单位: Lake Shore Cryotronics, Inc
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2010
• 资助国家: 美国
• 起止时间: 2010-03-01 至 2012-06-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0956816&HistoricalAwards=false
• 关键词: STTR; Phase; II; Active; Fiber

This Small Business Technology Transfer (STTR) Phase II project will develop a multi-functional active fiber Bragg grating sensor technology for the monitoring and management of cryogenic fuel such as liquid hydrogen and liquefied natural gas. The proposed technology uses in-fiber light to actively adjust sensor temperature, which will drastically improve responsivity and sensitivity of fiber sensors in the cryogenic environment. By coating fiber Bragg grating sensors with functional films, liquid fuel levels, spatial distribution, hydrogen concentration, and temperature can be simultaneously measured at cryogenic temperatures. Active sensors to be developed in this program are immune to electromagnetic interference and can be multiplexed in a single fiber, which allows a one-fiber and one-fiber-feedthrough solution for the cryogenic fuel management on the ground and in space. The broader impact/commercial potential of this project will be the development of a prudent sensing technology and system to improve the safety and reliability of the use of both liquid hydrogen and liquefied natural gas fuels. As major alternative fuels to power the U.S. economy for decades to come, they share a high economic value that requires accurate and reliable metering and management. Having a flexible, multi-use system available that can be installed with absolute confidence to monitor and manage these fuels, as well as the health of installed systems, will have a major impact on the acceptance of these volatile fuels as safe alternative energy sources. The ability to multiplex many sensors on a single fiber will enable safer and more economical penetrations in cryogenic walls and the low corrosion potential of the fibers will enable sensors to be placed along piping underground. The same basic active fiber sensor technology has the potential to be extended to fuel flow and other economically useful functions.

这个小型企业技术转移(STTR)二期项目将开发一种多功能有源光纤布拉格光栅传感器技术，用于监测和管理液氢和液化天然气等低温燃料。该技术利用光纤中的光来主动调节传感器温度，这将极大地提高光纤传感器在低温环境下的响应度和灵敏度。通过在光纤Bragg光栅传感器上涂覆功能膜，可以同时测量低温下的液体燃料液位、空间分布、氢浓度和温度。该计划将开发的有源传感器不受电磁干扰，可以在一根光纤中进行多路复用，从而为地面和空间的低温燃料管理提供了一种单光纤和单光纤馈通解决方案。该项目更广泛的影响/商业潜力将是开发一种谨慎的传感技术和系统，以提高使用液氢燃料和液化天然气燃料的安全性和可靠性。作为未来几十年为美国经济提供动力的主要替代燃料，它们具有很高的经济价值，需要准确可靠的计量和管理。拥有一个灵活的多用途系统，可以绝对自信地安装，以监测和管理这些燃料以及已安装系统的健康状况，将对这些挥发性燃料作为安全替代能源的接受程度产生重大影响。在一根光纤上复接多个传感器的能力将使低温壁上的穿透更安全、更经济，而光纤的低腐蚀电位将使传感器能够沿管道放置在地下。同样基本的有源光纤传感器技术有可能扩展到燃油流量和其他经济有用的功能。