This paper expatiates the theory of mathematical morphology, analyzes the characteristics of CCD (Charge Coupled
Device) noise, and introduces the traditional CCD de-noising methods. Based on this, the hological alternating hybrid
filter is designed, including the filter arithmetic design and the structural elements selection. Finally Matlab simulation
results show that this method can restrain the CCD signal shot noise, reset noise and high frequency noise better.
In the paper, the main properties of Moire fringe, such as average effect, amplification effect, corresponding relation are
elaborated, and the principle of Moire Ct technique is represented. On the basis of main features of Moire fringe,
multidirectional Moire Ct deflection system is designed using high accuracy Ccd, grating, filter, lens, planar mirror and
optical splitter. The system has simple light path, and can be easily made into the one that has large caliber.It can analyze
multidirectional records of the probe at the same time, and can obtain clear interference patterns.The iterative technique
combined with computer chromatography algorithms is used to achieve inversion of multidirectional clear interference
patterns so that the required parameters can be acquired. Moire Ct technique is applied to laser flexible manufacture.
Produced parts are delaminated on the paper, and are stratified manufactured until they are connected to forming.
Cad/Cam system is adopted to construct Spatial three-dimensional geometric model, and the data files are formed. Then
by using the Small triangle plane, the inner and outer surfaces of the data files are discretized. Discretized parts model is
made chromatography with mathematical methods using Cam software. A series of parallel horizontal intersecting planes
are generated. The problems of filtering arrangement tangent points are solved by recombining the shape and structure
relationship among the triangular mesh. Several conclusions are presented.
This paper expounds the operation principle of laser scanning imagery system,after analyzing the light source,
transmitter,receivewere and the continuous analogue electric signal which are in the laser scanning imagery system,a
laser scanning imagery system is designed, the composition and main parts of the system were expounded. The
performance referance date were reviewed.The characteristics of this systerm is that it not only can scanned but also can
collect reflecting coefficient information and can do laser ranging.This paper analyze and disguess the scanning imagery
system and the key technology of laser weapon, finally the applicating prospects of the system are described.
This paper first describes the characteristics and the transmission characteristics of laser, and analyzes the theory that
charge-coupled device (CCD) takes out the information charge from the charge packet by the scanning order to make the
received images reproduce as the electrical signal form. On this basis, an on-line thickness measurement system is
designed with a laser, a diaphragm, a filter, lenses, a charge coupling device (CCD), a splitting prism and other
components. The system has several functions, such as dust-proof, shock-proof, anti-high and anti-low temperature,
anti-electromagnetic interference, and so on; the measurement range is wide, the measurement accuracy is high and the
dynamic tracking speed is fast, etc. With this system, the length, the width and the thickness of the steel plate can be
measured real-time. At last this paper analyzes and discusses the system error with the real examples, and gives a few
important conclusions.
First of all, the article represents the character of photovoltaic effect and solar energy of semiconductor devices and the
current situation of solar panel. It analyzes two difficuitys of the appplication of solar energy, the ways of enhancing
solar cell performance and the barriers of producing high-efficiency PV modules. Solar photovoltaic technology, the
technology use of solar energy and industry development trend are preticted.
KEYWORDS: Photovoltaics, Solar cells, Solar energy, Control systems, Diodes, Solar energy systems, Solar radiation, Telecommunications, Manufacturing, Power supplies
First of all, the paper represents three main components, structure and working principle of solar energy photovoltaic
system. It analyzes the principles and design elements of photovoltaic power generation system design, represents Steps
and ideas of the design of the photovoltaic system, illustrates the acquiring informationand the method of software,
hardware design at the same time. Finally, it discusss the applications of the photovoltaic technology.
Firstly theory and characteristics of light passing film are analyzed. Then, a new type of photoelectric film detection
system with some components, such as lens, a splitting prism, a filter, a new photoelectric detector, and so on are also
analyzed.The system uses a high-precision bridge comparative method to send optical signals shoot by lamp-house to the
beamsplitter through an optical system composed with lens. The beamsplitter divides signals into two symmetrical ways
respectively passing symmetrical optical systems composed with filters, diaphragms and so on, in which one enters the
test film and the other enters referenced film. The test film and the referenced one make different decays for two signals,
and then optical signals are transformed into electric signals which are amplified by a low temperature drift amplifier
after being compared in high-precision electric bridge. At last the thickness values of film are displayed by displaying
circuit. The system has a symmetrical structure and high test precision. We use this system to measure films practically
and obtain experiment data results. Then we analyze the error and the results and present several important conclusions.
Expound the transverse photoelectrical effect, operating principle of the Position Sensitive Detector (PSD). Analyze the
main aspects that cause the non-linearity: the heterogeneity of the materials used to make the PSD's N region, the
electrodes' size and shape, the uneven resistance of the P region surface, the asymmetrical distribution of the junction
capacitance, the temperature excursion and so on. When a beam irradiates the PSD, whose surface resistance is even, two
photocurrents I1 and I2 will be obtained on both load resistors of the signal electrodes. Their magnitudes are determined
by the incident beam position and the values of the equivalent resistances R1 and R2 between the two electrodes. The
values of the load resistance can be ignored compared with the values of R1 and R2. After the processing of PSD's output
signals, conclusion is drawn that the PSD's output signals only have relationship with the position, rather than the light
intensity. The prominent merits of non-requirement of sample conversion and the ability to set up the position of
ionization greatly shorten the period of image capture, which enables its utilization in Faultage X-ray photography.
Expound the aspects which improve the filled air pressure as well as the detector's efficiency and resolution. At last, we
analyze the PSD's dynamic response error, and draw some important conclusions. We also forecast the application of the
combination of the PSD and the faultage X-ray photograph system in medical engineering.
In this paper, we expounded the composing, specialty, parameter, its working process, key techniques and methods for
charge coupled devices (CCD) twice value treatment. Disposal process for CCD video signal quantification was
expatiated; X-ray image intensifier's constitutes, function of constitutes, coupling technique of X-ray image intensifier
and CCD were analyzed. We analyzed two effective methods to reduce the harm to human beings when X-ray was used
in the medical image. One was to reduce X-ray's radiation and adopt to intensify the image penetrated by X-ray to gain
the same effect. The other was to use the image sensor to transfer the images to the safe area for observation. On this
base, a new method was presented that CCD image sensor and X-ray image intensifier were combined organically. A
practical medical X-ray photo electricity system was designed which can be used in the records and time of the human's
penetrating images. The system was mainly made up with the medical X-ray, X-ray image intensifier, CCD vidicon with
high resolution, image processor, display and so on. Its characteristics are: change the invisible X-ray into the visible
light image; output the vivid images; short image recording time etc. At the same time we analyzed the main aspects
which affect the system's resolution. Medical photo electricity system using X-ray image sensor can reduce the X-ray
harm to human sharply when it is used in the medical diagnoses. At last we analyzed and looked forward the system's
application in medical engineering and the related fields.
In this paper, the peculiarity of He-Ne was presented. The structure, working principle, non-linear factors, non-linear processing technology on the position output signal of PSD were analyzed, based on which according to characteristics of position output signal of PSD, the double light pathways optical system and signal processing circuit fit for PSD were designed. The commutation rule of the Gauss laser beam passing thin lens and the best collimation area were analyzed, and then the high-precision laser collimator was developed. Also the constitutes, working principle and characteristics of instrument were generalized and the main technique parameters were presented. Combining the developed straightness error evaluation software and high-precision laser collimator to achieve dynamic and static measurements of straightness error. The experiment results showed the consistency between the theoretic analyses and experiment after the repetitious testing. At last the application foreground of the instrument was prospected.
In this paper, based on quantum mechanics and photons theory, the characteristics, the light-wave mode, the excitated
radiation and the theory of light amplifying and producing are expatiated. The interactional process of laser and material
and their influences which are complex, fast, and multidimensional and with many parameters in the process are studied
using the model of mathematics-physics-mechanics. First, the calculate cell and calculate area are selected in reason, and
then the calculate areas are dispersed. Using combining steps function with linearity approximation, non-linear equations
are answered with the iterative method, the changing connections of temperature parameters are obtained, and the
surface intensify technique and processes are given which tradition technics cannot solve. It provides theory basic for
laser intelligent machining engineering.
Expound the lateral photoeffect, the operating principle, architecture and characters of improved two dimensional position sensitive detector. A new bridge theory is put forward to analyze the reason of nonlinearity errors produced by the center and edge of 2D-PSD. A signal processing circuit of improved 2D-PSD including high-precision, low temperature excursion and high input impedance preamplifier, summator, subtracter and divider is used in high-precision laser collimation system. The signal processing circuit converts the optical signals processed by optical system including optical lenses, diaphragm, light filter etc into electrical signals, then the electrical signals will be sent into data acquisition system. The straightness measure results of work-piece will be showed on computer by the linearity evaluation software. The characters of this system: fast response, high-resolution position, real-time detection etc. In the end, measuring results and some important conclusions are presented.
Based on the lateral photo effect of the semiconductor photoelectric position sensitive device, Developing a new kind
of photo-electro position sensitive detector as the receiver of the laser beam, taking the laser as the launcher, and using
optical lens, light filter .etc, we have designed a new kind of 3D non-contact optical measurement system with high
accuracy and high resolution. The characteristics of this system are demonstrated as: very high response speed; very
high position resolution; the position output has nothing to do with the intensity of the light spot as well as the size of
it, only if the center of gravity of it is related; And it can detect the intensity and the position of the incident light spot at
the same time, etc. On the basis of the ruled lines of the Cartesian axes located on the object that is measured, it can
produce the contour of the object, which provides a optical detecting method that can measure the marginal date
accurately for detecting irregular shape and early surgical analysis and diagnosis. This measurement system has very
high application value for the clinical diagnosis. Finally, it has analyzed the factors affecting system precision and
causes of the system errors, and has provided the experimental result and several important conclusions.
In the paper generally elaborates the principles of the modern interferometry, the characteristics of the converging shock wave and the digital simulated formula of converging cylindrical shock wave.On these basis, laser, lens, beam splitter and the modern interferometric technology are used to design an interferometer used to observe cylindrical shock wave and the whole process of the converging cylindrical shock wave's unstability, and to get the distinct interferogram. After the detailed analysis, discussions are given to the experimental interferogram and cylindrical shock wave's aberration which gains from the measure system and also to Mach disk induced in the test process. Finally several important conclusions about converging shock wave's triple point, random Mach number and so on, are given.
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