基于S3C2410A的高温测量系统的研究.pdf基于S3C2410A的高温测量系统的研究pdf,基于

文件名称: 基于S3C2410A的高温测量系统的研究.pdf

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详细说明：基于S3C2410A的高温测量系统的研究pdf,基于S3C2410A的高温测量系统的研究第3期姜春华等:基于S3C2410A的高温测量系统的研究 327 程控差分放大 4结论信号输入模拟信号 D9238 调整 FPGA S3C2410A LCD显 298698K 电压 T=-328/ln(0.5612R), 比较器 698K 比较电压输入 0.00219K1 [57] 图2温度测量系统结构框图 448K0.004K 1[81 523K0.0052K19 S3C2410A 698K [1] SILVAC J, ARAU IO M TT hermal effect on u pconversion flu ores cence em ission in Er3+doped ch al cogenide glasses under anti Stok es, Stokes and resonant excit ation[ J.Optical M aterials, 2003, 22(3 275 282 I 2] SINGH A K, RAI S B, RAID K. Optical propert ies and upcon version in Erdoped Li: Teo2 glass[ J]. Solid State Commun ica tions,2005,136(3):346350 J ,2009(1):46 2004 [5 AIZAWA H, TAKEI K, KATSUMATA T, et al. T emperatu re m casurement u sing Er doped Sio 2 glass[ J]. SICE 4th Ann ual C onference,2004,346):2442497 [6 SINGH A K, RAI S B, RAI DK, et al. U pcon version and thermometric applications of Er+-doped Li: TeO 2 glass[ J]. A pplied Phys ics E.2006,82(2):28294 [7 TRIPATHI G, RAIV K, RAID K, et al. Upconversion in Er3+-doped Bi2O3-Li2 O Ba0-PbO tertiary gl as s[ J]. Sepctrochimiva a cta part A,2007,66(5):130713l1. I 8] BERTHOU H, JOR GENSEN C K. Optical fiber temperature sen sor based on upcon versio excited flu orescence J]. Opties Letter 1990,15(6):11001104 9] SANTOS P V, ARAUJO MT, GOUVEIAN AS, et al. Optical temperature s ensin g usin g upc on version fluores cen ce emis sion in Er/Yb+- codoped chalc og enide glass[ J]. A pplied Phy sics Leller, 1998, 73(5): 578580 Research based on S3C2410A of high temperature measurement system JIANG Chunhua, ZHANG Shuang, LIU Yao, CAO Tuo (School of Physics and Elect ronic T echnology, Liaoning Normal University, Dal ian 116029, China) Abstract: The preparation process of Er-doped silicate glass was presented. In the tem perature range of 298-698K, the relatio ns hip bet w een the absolute temperature T and the fluores cence intensity ra tio R of two green upr co nv ers ion phot luminescence s pectra emitting from the trivalence erbium ions loped in the silicate subs trate w as dis cussed and fitted to the analytic function of R=1.782 x exp( -328/T). The sensitivity of the sample descends monotonously from 0. 002 19 to 0. 000 75K w hen the tem perature rises from 298K to 698 K. The results show that the Er-doped ilicate glass could be used as a high sensitivity sensor and play a major role in temperature measure m ent below 698 K KeywordsErocrepedsilicateglassaafluoressenceintensityratio:eorticaltemperaturesensorwww.cnki.net

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