Tianze Li

Research of fiber optic lighting system of solar energy

Working principle of the solar fiber optic lighting system is described in this paper, on this basis, automatic tracking concentrator device, transmission device and radiation equipment which are the three main components of solar fiber optic lighting system is designed,the software and hardware in the control systerm is designed. the method when the sunlight is insufficient is presented, at last gaving saveral important conclusions.

Research on high-precision real-time automatic detector

This paper expounds the working principle and the development program of on-line real-time automatic detector with high precision. By a series of techniques, such as combining driving frequency regulation and integration time adjustment, the independent regulations of high-speed synchronous counter, data transmission clock and transfer clock of optical signal are achieved, and the technical problems that the clock synchronization is difficult to control as well as the signal to noise ratio (SNR) varies with the CCD output signals are solved. The dealing circuit of constant current power is designed to ensure the light-emitting stability of light source, and the amount of data is greatly reduced by the narrow pulse center collection. The instrument has several characteristics, such as high precision, on-line and real-time, non-contact measurement, fast measuring speed, and so on.

Research on new technologies of photoelectric conversion efficiency in solar cell

The characteristics of the solar energy and three conversion mode of solar energy including photovoltaic conversion, solar thermal conversion, and photochemical conversion are represented in this paper. On this basis, the materials used in solar cell, as well as the working principle of solar cells, the factors of low convert efficiency of solar cells and the two major bottlenecks encountered in the solar application are analyzed. The idea that spontaneous arrangement of compound organic molecules is achieved by changing the molecular arrangement structure of the organic thin-film solar is put forward. The new structure of liquid crystal layer come into being accordingly so that the electron donor and the receptor molecules of the mixture are separated, and the contacting area between them is enlarged. So the efficiency solar photovoltaic is improved. The research and development of this new technology can solve the technical problem of the low conversion efficiency of solar cell, and open up an effective way to improve the conversion efficiency of solar cells. At last,the prospect of solar photovoltaic technology, solar energy exploit technology and the development of industry is offered in the article.

Application of Image Sensor in the Three-Dimensional Surface Measurement

The paper expatiates the principle of the CCD sensor and its features, and analyses the calculation method of space surface three-dimensional coordinates. On that basis, adopting combining of area correlation and gray correlation, stereo images can be obtained by CCD, the accurate calculations of three-dimensional surface coordinates are achieved. The method provides a new test means.

Study on the Treatment Technology and Application of Charge Coupled Device

The characteristics and the working principle of charge coupled device (CCD) are expatiated, and the light source adapting to CCD and the matching relation between the light source and the illumination are analyzed. On this basis, the optical system with lasers, lenses, filters, apertures and other optical devices is designed to adapt to CCD, and the driving timing and the binarization processing technology of CCD are given. Through the online real-time measurements of filament diameter using CCD, the experimental test results and their errors are analyzed, and finally some conclusions are given. Keywords-CCD; illumination matching; transform of laser beam; measurements of filament diameter

Research on CCD De-Noising Technology

After the charge coupled device (CCD) noise sources is expatiated, the methods of restraining the main CCD noise are analyzed. For the shot noise, the wavelet theory and adaptive theory are combined and the error formula is derived in a sufficient sampling frequency. The working principle of CDS technology and its impact on filtering the CCD reset noise are discussed. The results show that as long as the choice of appropriate sampling time, the reset noise can be restrained furthest.

Design of on-line thickness measurement system based on CCD

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.