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1、Chapter 7 Applications 7.1 TIP-CCT(Thermal Image Processing Circuit-Card Tester)Tester(2)Thermal Image（3）Flying Probe光电学院研制TIP电路故障检测仪效果图(1)原理 By capturing a series of images as an electronic circuit card is stimulated,one can compare the heating rate of a known good circuit card to those of the Unit
2、 Under Test(UUT).Given a stimulation pattern with sufficient energy to be viewable via infrared,malfunctioning areas of the board are made manifest by inappropriate heating rates.(2)Enhances Support CapabilityEnhances system availability by providing component level replacement capability without sc
3、hematicsDoes not depend upon out of business contractors or contractors that dont support older systems.Improves reliability by detecting components prior to failure.Does not use probes,scans the CCA from a distance,the problem of RF loading in which CCA characteristics change when loaded down by pr
4、obes in other conventional equipment is eliminated.7.2 NDTE Non-Destructive Test EquipmentProvide highly sensitive and accurate three-dimensional nondestructive inspection and evaluation of manmade structures in a variety of applications.Non-Destructive Test Equipment(1)原理Locates defects in material
5、s by sensing time-dependent temperature difference.Temperature map showing subsurface defects only(2)Inspection and Evaluation Process The material or structure is heated artificially using pulse laser or flash lamps.The material or structure is scanned by the NDTE.The resulting time sequence temper
6、ature maps show heat-flow anomalies that could be caused by defects or corrosion .show the flaws-their location,size,shape,depth,and severity.(3)Disadvantage of Other NDT TechniquesUltrasound In order to determine the extent of corrosion damage,the fuselage must be taken apart.Eddy-current Can not b
7、e used in non destructive inspection of hidden defects or corrosion inside material or structure.(4)Application of IR/TIP NDTE Highway-bridge inspectionAircraft maintenance inspection A recent investigation of NDTE used to detecthidden corrosion on U.S.Air Force aircraft indicated that false detecti
8、on of corrosion results incostly,unnecessary,and destructive exploratory maintenance,said Del Grande.“We expect our technology to cut the cost of destructive exploratory maintenance in half by eliminating clutter,”she said.7.3 辐射测温7.3.1 装置 原理 红外测温仪结构原理红外测温仪结构原理7.3.2 红外测温的优势(1)不接触测量remote sensing(2)快
9、速 响应速度不难达到 甚至 级 一般测温速度 S(3)测温范围宽 7.3.3 应用（1）微小区域 （激光微细加工 中曝光焦斑 ）温度测量测温区域直径红外探测器光敏 光学系统放大倍率：测量区域（即光敏面在激光曝光面的共轭区域）直径：调整 或是 ，可进一步减小 ，但需考虑温度分辨能力（2）化工化学反应的速度一般与温度呈指数关系.微电子、光电子器件制做中的“腐蚀”工艺就需严格控制“温度”和“时间”强酸、强碱的温度测温（3）交通-火车轮轴温度测量高温 润滑油碳化 升温 加速碳化 恶性循环运动中的温度测量 要求不接触测量，快速响应 （4）轻工、纺织纸板、布疋的温度测量运动平面（5）钢材、建材玻璃板、钢板
10、温度测量不接触测量高温运动平面不接触测量（6）电力、电气 -高空、高压、实时检测Faulty Fuse Connectionremote sensingLoose ConnectionOxidation of High Voltage Switchremote sensingIncorrectly Secured ConnectionThe thermaCAM PM 695 is the first camera in the world to produce an infrared and a visual image at the same time（7）Adidas Improve th
11、e comfort athletes word（8）资源探测矿藏地下水温泉remote sensing(9)农林农作物旱况森林火警remote sensing7.4 红外气体分析7.4.1 装置、原理 一种气体分析仪的工作示意图一种气体分析仪的工作示意图*稀薄气体选择吸收 不同气体有不同的 选择吸收波长 4.35 4.7 7.3 6.2*滤光片波长正好是样品带测气体的吸收波长 参考室缺待测气体，其余成分与样品室同调制方式：参考室通，样品室断 参考室断，样品室通输出信号 待测气体浓度为零参考室输出样品室输出待测样品的浓度7.4.2 特点(1)灵敏度高1 ppm(2)反应速度快0.1 S 量级(3
12、)连续分析，利于自动控制7.4.3 应用(1)农业 施肥、农产品储存、运输(2)工业、冶金、化工(3)环境污染监控大气遥测.强激光 Raman 散射(4)战争环境毒气监测7.5 Military Applications7.5.1 红外侦察 抗伪装的能力特强 对伪装的树枝、草坪都能识别 可以侦察几个小时前驻过的营地 能识别 12 小时前停过的飞机7.5.2 红外夜视7.5.3 红外制导（1）优势 任何军事装备、飞机、火箭、坦克、军舰等只 要运动，就会有强烈的红外辐射，利用敌方目 标的红外辐射引导导弹，成本会很低，命中率 会很高（2）云团与目标的区分小目标 输出方波 大云团 输出脉动直流 调制盘
13、置于光学系统的象平面调制盘置于光学系统的象平面（3）方位信号的产生 方位 相位产生目标方位信息的简单双扇面调制盘产生目标方位信息的简单双扇面调制盘四象限探测器四个象限信号电压的 相对关系 方位7.6 Building Diagnostic Finding leaks in flat roof Heat Losses Outwards 7.7 Medical Applications7.7.1 Medical DiagnosesThe presence of trace amount(at parts-per-billion ppb)of ammonia,nitric oxidein the e
14、xpired breath has been linked to kidney/liver malfunction,asthma,cancer.ultrasensitive,laser-based,trace-gas detection technology is able to detect and measure ppb concentration of trace gases.Response time is less than 60 seconds.7.8 Security Application -Seeking ExplosivesIt is very difficult to a
15、void leaving microscopic traces of explosive on the outside of luggage if those handling the luggage have themselves packed the explosives.Laser based techniques could scan all items of luggage.The method looks for light produced when tiny amounts of explosive are detonated by a 10.6 um laser pulse.
16、The pulse of light from the detonation of explosives can be detected considerably earlier than that from sugar.The spectra generated by the explosive detonation were also easy to identify and distinguish from sugar.The explosives all had a broadband peak with sharp lines,the sugar had only a few sharp lines.7.9 红外加热及干燥优势:1.(2)红外调节辐射通量的空间分布易于调节1.(3)红外辐射器件作为主动部件引入自动线,2.易于与其它技术相配合,实现自动化(1)红外对很多有机物的穿透能力强成 -缩短工时,降低能耗应用 气車面漆 木材 .注意事项 辐射峰与吸收峰的匹配