In the particles' size optical measurements, the distribution of particles' size is often caculated upon the diffraction image, so the quality of the image is very important. But in the real case, information data of the image both in high bright area and consulted area are often lost because of the overflowing of zero grade diffraction stripe and submersing of high grade diffraction stripe, but for the disfigurement of optical element, speckle and system accepting-error. In this paper, a new method of double filter data processing is put out, that is, the image is first divided into some net-section, the integral-average of scattering energy in this section is chosen as a rebuilt data, and second, non-linearity alternated processing is put out to reduce the trouble affecting and with in the probability idea the probability brightest dot data is set as 1, the backdrop probability data as least at the proejcted section. At last, a high qualty image is rebuit in 3D with this two filter processing after processing by a computer.
The study on the shape effect of particles for measuring result is more important in the measurement of particles' size distribution, therefore, appearance of particles' shape distribution must be considered in the advanced measuring method. In the traditional measuring method, the shape varying of particles is not considered. In this paper, it is necessary. The microscope is not suited to review the micrometer particles in a great number, a diffraction image processing method is put forward, that is, a sample board receives the moving particles and made as diffraction sample, which is irradiation by Laser, the diffraction pattern produced by it is processing based on the data computing by PC, some models are used within it. At last, the shape distribution function can be made at one time for greater number particles.
There are a few difference in the characters of the optical sensors of the particle's counter when it is been making because of the technical difference between the sensors. So, the criterion must been used for the sensors. In the traditional method, only one or two kinds of the standard particles is used as criterion because that the continual function of distribution of the particles can not be gotten from an old data processing method. That is to say there is not reflected absolutely for the characters of the sensor itself because of the non-linearity and continuity of the distribution. And than, the effecting of the criterion of the counter is weakening greatly. In this paper, a new infinite channels concept and a probability function are put forward, through which, the continual distribution function of the particles can be gotten by using the technology of the A/D conversion, coding channels, data address and sum. Three kinds of the distribution function of the standard particles are used as criterion, the criterion can be completed through the comparing the standard function and real-measuring function. At last, the debugging is very simple in the Electro-circuit instead of the optics and the effect of it is enhanced greatly.
Many clinical results showed that intravascular low-reaction- lever laser irradiation therapy (ILLLI) could improve the hemorheologic characteristics. The red blood cell (RBC) aggregation index, the blood viscosity and the erythrocyte sedimentation rate (ESR) were reduced significantly by treatment with ILLLI. In this paper, a physical process is proposed that laser makes the H-bond parted, which would give rise to a decrease in the RBC aggregation index. According to the principle of hemorheologic characteristics, the blood viscosity and the ESR reduce with the decrease in the RBC aggregation index.
It is very important to evaluate mechanical parameters of material by testing in mechanical manufacture, especially the tensile strength of material. The results of the testing showed that its accuracy is relevant to many factors, such as the manufacture technology of testing samples, load growing in number with speed in the test processing etc. Then a key to get a high accuracy (sigma) b in testing is to measure the traverse area of the sample precisely since the precision of the traverse area measurement affected seriously on the precision of measuring (sigma) b. Conventionally, the area of the sample is commonly measured by measuring its diameter in two-direction in one plane with a sliding gage used. This measuring method not only causes a high system error in experimental testing, but also measure the area only in 2D. In fact, the tensile distribution of the sample is in 3D and related with the tensile strength (sigma) b clearly in 3D. For this reason, the relationship between the traverse area of the sample and its tensile strength is studied theoretically and experimentally in 3D. In this paper, it is emphasized that the traverse area is in 3D and then a method of measuring the are of one is designed in experiment.
This essay deals with the characteristics of scattered light on metal surface under the irradiation of dynamic speckles in theory. According to the relationship between the second order moment of the integrate intensity of scattered light in far field and the parameters of surface roughness Rq and Sm, a split system capable of generating dynamic speckles is presented which is made up of ground-glass and a BS mirror. This system causes the coherent plane wave coming from a He-Ne Laser to produce dynamic speckles and then irradiate the metal surface through which the scattered optical field was received by 1-D-CCD which is divided into two signal areas and then form two experiment conditions. Finally, based on the two received contrasting signals, the value of Rq and Sm is determined both individually and at the same time.
Based on the principle that after illuminating the rough surface the two coherent plane waves can be coherent and this coherence has something to do with the surface roughness a split system with an adjustable incident angle is proposed in this paper -- it consists of a moving reflector and a double Dove prism which can divide one beam of the plane wave into two coherent plane waves. Through an interferometer the scattered coherent optical field is produced and a correlation speckle pattern which can be received by CCD is produced. The visibility of the pattern together with the other collected signals such as incident angle and so on are put into a computer. After data processing, the result value of the roughness is exported directly by the computer. The experimental results show that because of the adjustable incident angles this new method can improve the measuring sensitivity greatly on the condition that it does not influence the measuring extent and meanwhile, because of the introduction of the CCD and the computer, it can obviously strength the real-time and aging of measuring.