摘要
用激光加热基座法生长出端部掺Cr3＋的YAG（Y3Al5O12）光纤荧光温度传感头，采用锁相相关检测技术对呈指数衰减的荧光寿命进行测量。在0～180℃测温范围内，测量误差为0．4℃，主要由信号处理电路引起。与其他的相敏检测技术相比，锁相相关检测提高了系统测量精度和抑制噪声的能力。系统动态响应好，抗电磁干扰，可应用于生物医疗和变电站等场所的温度监控。
The YAG（Y3 Al5 O22 ） fiber-optic thermometer probe with Cr3 ＋ ion doped tip end was grown from the laser heated pedestal growth method, and a thermometer system based on its fluorescent decay was presented. A phase-locked detection method was used to check the fluorescence lifetime. In the range from 0 ℃ to 180℃ ,the measurement resolution achievable due to signal processing scheme is 0.4 ℃. Compared with other phase-sensitive detection techniques, phase-locked detection results in a signifi- cant improvement in the measurement accuracy, a high noise-suppression ability. Because of its good dynamic response and immu- nity to electro-magnetic interference, it may be used in microwave treatment and thermal monitoring of medium voltage substations.
出处
《仪表技术与传感器》
CSCD
北大核心
2009年第3期104-106,131,共4页
Instrument Technique and Sensor
基金
海南省自然科学基金项目(807012)
海南大学科研基金项目(kyjj0607)
海南省教育厅高校科研项目(Hj2008-10)
