jericho传感器与检测技术双语 HUA system office room 【HUA16H-TTMS2A-HUAS8Q8-HUAH1688】
Chapter 1
1.difference between the meaning of nsor and that of transducer.
A transducer is a device that converts a signal from one physical form to a corresponding signal having a different physical form
A nsor is a device that converts a signal to an electric output.
Sensor & transducer ：sometimes are synonymous terms. However, nsor suggests the extension of our capacity to acquire information about physical quantities not perceived by human ns becau of their subliminal nature or minuteness. Transducer implies that input and output quantities are not the same. A nsor may not be a transducer.
2.Static characteristics of nsors: Range, Accuracy, Repeatability, Preci, Sensitivity, Resolution, Threshold, Linearity, Hysteresis.
Accuracy （精确度）:
Accuracy is the quality that characterizes the capacity of a measuring instrument for giving results clo to the true value of the measured quantity Repeatability（重复性）:
The repeatability is the cloness of agreement between successive results obtained with the same method under the same conditions and in a short time
interval. Quantitatively, the repeatability is the minimum value that exceeds, with a specifi ed probability, the absolute value of the di¨erence between two successive readings obtained under the specified conditions.toefl是什么
Preci （精密度）：the pierces
resultinPrecision is the quality that characterizes the capability of a measuring instrument of giving the same reading when repetitively measuring the same quantity under the same prescribed conditions (environmental, operator, etc.),without regard for the coincidence or discrepancy between the result and the true value. Precision implies an agreement between successive readings and a high number of significant figures in the result. Therefore, it is a necessary but not sufficient condition for accuracy.
Sensitivity （灵敏度）:
The slope of the calibration curve, whether it is constant or not along the measurement range.
griy=f(x), the nsitivity S(x
a ) at point x
a
is:
Resolution（分辨率）:
the minimal change of the input necessary to produce a detectable change at the output
Threshold（阈值）:
the minimal input necessary to produce a detectable change at the output. Linearity （线性度）：
Cloness between the calibration curve and a specified straight line. Hysteresis（滞后）：
tit
the difference between two output values of successive input values.
3.Power spectrum density of resistor thermal noi in ca of open circuit and load matched.
4.Power spectrum density of flicker noi.
1/F的噪声
chastitybelt5.mathematical definition of dynamic error?
bread的音标The dynamic error is the difference between the indicated value and the true value for the measured quantity, when the static error is zero.
experienced6. What are the conditions for a signal transmitted through a linear system and remain undistorted And what are the requirements on amplitude and pha frequency respon of nsors in order to avoiding signal distortion
amplitude-frequency=1 pha-frequency is linear the same group velocity and group delay
7.The definition of rising time.
ri from 10% to 90% of the final output value.
8.How to calibrate a nsor.
9.Failure rate, reliability, and mean time between failure.
书上例题
Chapter 2 and 3
1Strain gage
1.1Relation between stress and strain.
专业美容培训1.2Relation between resistance change and strain.
