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1、在整堂课的教学中，刘教师总是让学生带着问题来学习，而问题的设置具有一定的梯度，由浅入深，所提出的问题也很明确12电气于守洋 李阳华齐建明在整堂课的教学中，刘教师总是让学生带着问题来学习，而问题的设置具有一定的梯度，由浅入深，所提出的问题也很明确Living in a rapidly developing societyssat，we have the chance to enjoy many things people who has died can not. 生活在一个快速发展的社会,我们有机会享受很多事情已经死亡的人不能。在整堂课的教学中，刘教师总是让学生带着问题来学习，而问题的设置具有
2、一定的梯度，由浅入深，所提出的问题也很明确Some one may like smart cars有些人可能喜欢智能汽车在整堂课的教学中，刘教师总是让学生带着问题来学习，而问题的设置具有一定的梯度，由浅入深，所提出的问题也很明确Some one may be purepj(r) Military enthusiastsnju:zsts有人可能是纯军事爱好者在整堂课的教学中，刘教师总是让学生带着问题来学习，而问题的设置具有一定的梯度，由浅入深，所提出的问题也很明确But every machine can not work without many special devices in it.
3、These special devices are called “transducer”trnzdju:s(r) or“sensor”,which are widely used in everywhere. Sensors to machine is what sense organs to a people .Lots sensors make up the nervous system of the machine ,then the machine can be controlled by people to do what they want .但每台机器没有很多特别的设备不能工作
4、。这些特殊设备被称为“传感器”或“传感器”,广泛用于无处不在。传感器的机器是人的感觉器官。很多传感器组成机器的神经系统,那么这台机器就可以由人们去做他们想要的东西。 在整堂课的教学中，刘教师总是让学生带着问题来学习，而问题的设置具有一定的梯度，由浅入深，所提出的问题也很明确Now ,lets have a realization on the different senses of machine.现在,让我们有一个感官的不同机器上实现。Photosensitive sensor光敏传感器Acoustic sensors声学传感器Gas sensor 气体传感器chemical sensor化
5、学传感器Pressure ,temperature ,fluid sensor压力、温度、流体传感器在整堂课的教学中，刘教师总是让学生带着问题来学习，而问题的设置具有一定的梯度，由浅入深，所提出的问题也很明确Photosensitive sensor(Photosensitive sensor(光敏传感器) )Photosensitive sensor is one of the most common sensor, its sort is various, mainly include: photocell(光电管), photomultiplier tubes（光电倍增管）, photo
6、sensitive resistance（光敏电阻）, light activated triode（光敏三极管）, solar cells （太阳能电池）and infrared sensors（红外线传感器）, ultraviolet ltrvalt sensors（紫外线传感器）, optical ptk()l fiber type photoelectric sensor（光纤式光电传感器）, color sensor, CCD and CMOS image sensor, etc. 在整堂课的教学中，刘教师总是让学生带着问题来学习，而问题的设置具有一定的梯度，由浅入深，所提出的问题也
7、很明确Light sensor is the most current production, one of the most widely used sensors, it plays an important role in automatic control(自动控制) and non-electricity measurement mem()nt technology（非电量电测技术）. The simplest photosensitive sensor is photosensitive resistance(光敏电阻), it will create electric curre
8、nt when photons（光子） hit joint（结合处）. 在整堂课的教学中，刘教师总是让学生带着问题来学习，而问题的设置具有一定的梯度，由浅入深，所提出的问题也很明确Working principleLight sensors can converts light signals into electrical signals with photosensitive element sensor , its sensitive wavelengths is close to the visible light wavelength, including infrared nfrr
9、ed wavelength（红外线波长） and ultraviolet ltrvalt wavelengths（紫外线波长）. Light sensor is not limited to light detection, it also can be used as a detection device of other sensors to test many non-electrical, as long as the non-electric can be converted into optical signal changes（光信号变化）.在整堂课的教学中，刘教师总是让学生带着
10、问题来学习，而问题的设置具有一定的梯度，由浅入深，所提出的问题也很明确Application Photosensitive sensor is mainly used in solar energy lawn lamp(太阳能草坪灯), small optical night lights（光学小夜灯）, camera, monitors mnt, electric toys, electric switches, anti-theft wallet, electric music box, music birthday candle, music cup, the body inductio
11、n（感应） switch, and other light automatic control field.back在整堂课的教学中，刘教师总是让学生带着问题来学习，而问题的设置具有一定的梯度，由浅入深，所提出的问题也很明确Chemical sensor化学传感器Chemical sensor is a testing instrument which is sensitive to all kinds of chemical and can converts their concentration to electrical signals. Compared to human sense
12、organs, chemical sensors generally corresponds to the persons sense of smell and taste organs. But , not the simple simulation of people organs in, it can also feel certain substances human organs can not feel, such as H2, CO.在整堂课的教学中，刘教师总是让学生带着问题来学习，而问题的设置具有一定的梯度，由浅入深，所提出的问题也很明确Aplication of chemic
13、al sensorChemical sensors is used for chemical measurements .It is often used in the production process analysis and environmental pollution monitoring. Chemical sensor has been widely used in mineral resources exploration（矿产资源探索）, weather observation(气象观测) and remote sensing（遥测）, industrial automat
14、ion（工业自动化）, medical diagnosis ,dagnss （医疗诊断） and real-time remote monitoring（实时监测）, agriculture fresh preservation and fish detection, security, security alarm, and energy saving and so on.back在整堂课的教学中，刘教师总是让学生带着问题来学习，而问题的设置具有一定的梯度，由浅入深，所提出的问题也很明确Pressure sensitive, temperature ,fluid sensor,sense o
15、f touchPressure sensor is the most common sensor in industrial practice, it is widely used in various industrial control environment(工业自控环境), involving water conservancy and hydropower hadr()pa （水利水电）, railway transportation, intelligent buildings, production control（生产自控）, aerospace, military mlt()r industry（军工）, petrochemical（石化）, oil, electric power, ships, machine tools（机床）, pipe, and many other industries.在整堂课的教学中，刘教师总是让学生带着问题来学习，而问题的设置具有一定的梯度，由浅入深，所提出的问题也很明确Thanks !
