SPECTROMETER MONITOR AND PROTECTION SYSTEM

光谱仪监控和保护系统

• 批准号: 8363988
• 负责人: PETER P BORBAT
• 金额: $ 0.65万
• 依托单位: CORNELL UNIVERSITY
• 依托单位国家: 美国
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-09-01 至 2012-08-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/8363988
• 关键词: Amplifiers; Computer software; Detection; Elements; Funding; Generations; Grant; Health; Length; Monitor; National Center for Research Resources; Noise; Output; Physiologic pulse; Principal Investigator; Qualifying; Research; Research Infrastructure; Resources; Source; System; Technology; United States National Institutes of Health; base; cost; ferrite; microwave electromagnetic radiation; programs; repaired; research study

This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. Primary support for the subproject and the subproject's principal investigator may have been provided by other sources, including other NIH sources. The Total Cost listed for the subproject likely represents the estimated amount of Center infrastructure utilized by the subproject, not direct funding provided by the NCRR grant to the subproject or subproject staff. Our high-pulse TWTA's and mm-wave spectrometers cannot have fully passive receiver protection. A malfunction in pulse sequence generation or in receiver protecting element will be fatal for the expensive low-noise amplifier. We have considered software safeguards, which check input parameters for sanity and replay programmed pulse sequences before the experiment has started. We thus plan to develop spectrometer monitor hardware which will be based on FPGA to provide high duty-cycle safeguards by monitoring TWTA gate pulses. It will also discriminate or repair runt pulses, glitches, pulses in too rapid succession, pulses that are too long, qualify multi-pulse sequences, shut down RF pulses based on output pulse length, duty cycle and average power by means of pulse detection before and after waveguide attenuator. It will monitor status lines from an active receiver protector and from a microwave pulse-forming unit. An active receiver protector health monitoring circuit and BIT for proper ferrite state will also be implemented.

该子项目是利用资源的众多研究子项目之一 由 NIH/NCRR 资助的中心拨款提供。子项目的主要支持 并且子项目的首席研究员可能是由其他来源提供的， 包括其他 NIH 来源。 子项目可能列出的总成本 代表子项目使用的中心基础设施的估计数量， NCRR 赠款不直接向子项目或子项目工作人员提供资金。 我们的高脉冲 TWTA 和毫米波光谱仪无法提供完全无源的接收器保护。 对于昂贵的低噪声放大器来说，脉冲序列生成或接收器保护元件中的故障将是致命的。我们考虑了软件保护措施，在实验开始之前检查输入参数的完整性并重放编程的脉冲序列。因此，我们计划开发基于 FPGA 的光谱仪监控硬件，通过监控 TWTA 门脉冲来提供高占空比保障。它还可以区分或修复矮脉冲、毛刺、连续太快的脉冲、太长的脉冲、限定多脉冲序列、通过之前的脉冲检测根据输出脉冲长度、占空比和平均功率关闭射频脉冲。和波导衰减器之后。它将监视来自有源接收器保护器和微波脉冲形成单元的状态线。还将实施有源接收器保护器健康监测电路和用于正确铁氧体状态的 BIT。