A novel surface plasmon resonance (SPR) sensing scheme was devised to develop a palm-sized SPR biosensor device. In this system, the beam from a diode laser (as the incident light source) is ...modulated using a rotating mirror. The reflected light from the gold chip is then captured using a CMOS image sensor, controlled by a notebook PC via a USB interface. This provides a portable POCT SPR sensor device which enables label-free and real-time analyses. This method can also eliminate the deterioration in image quality of the reflected laser light, originating from the coherency of the laser source. The sensing response of the system to the bulk refractive index was calibrated using various concentrations of glycerol solution. As a result, the SPR sensor was able to detect a ∼2.5
×
10
−6
RIU change in the refractive index of the solution without implementing any of data processing techniques. The performance of the sensor was tested by monitoring the binding of PSA to its antibody in real-time to verify its potential applicability in analyzing biomolecular interactions. The results obtained from a series of tests confirmed the practicality of the sensor for the on-site detection of a variety of substances in biology, diagnosis, the environment, and defense.
This study aims to identify numerical analysis methods for the reliability prediction of rotating mirror(RM) strength at the early-stage design. A mathematical model for the strength reliability ...analysis of RM is established based on the Monte Carlo method, small-sample theory, and reliability principle. Numerical analysis on the strength reliability of RM is conducted, and the results are experimentally verified according to small-sample theory. The spearman rank order correlation coefficients between structure parameters and the maximum stress is the circumradius of mirror body, and that of the material variable is the elastic modulus of high-strength aluminum alloy(Al). The skewness and kurtosis values of maximum stress and strain are all positive. Calculated statistical results obey normal distribution and are right skewed. At 95% confidence level, the strength reliability of the RM with a design speed of 70,000 rpm is 0.999. This finding shows that the strength reliability of the RM meets the required design in ideal state. No failure of RMs occurs among strength reliability experiment, proving the validity of the numerical model. This model provides an economic, feasible, and effective method for estimating the strength reliability of RM.
Target track is an important research dot in weapon performance testingfiled, to stable track the flying target in optical detection system and testing instrument, horizontal trajectory tracking ...system based on rotating mirror was researchedin this paper.A horizontal trajectory tracking method was proposed for the tracking problem in the process of the projectile flight, the design of rotating mirror was analyzed and designed;the calculation method of the rotating mirror tracking system were derived, and the influence factors were studied and analyzed, the rotating mirror rotation control algorithm without considering effect of gravity flight targetwasanalyzed and the angular displacement and angular velocity of the rotating mirror were given in the effective tracking range. Through experiment and calculation, the results show that the tracking system can achieve stable tracking of flying target
A TKPF269 rotating mirror digital streak camera with a photosensitive element based on a CMOS array was developed for the purpose of replacing film in high-speed streak cameras (SFR-2M, USF-2, etc.). ...A brief description of the TKPF269 streak camera design is given. The space-time picture of the emergence of light from the ends of optical fibers upon firing of an explosive in a model assembly was simultaneously recorded by a TKPF269 streak camera and an USF-2 streak camera to compare the metrological characteristics of these devices. The results of experimental data processing are presented.
This paper describes 3D scanning by a 2D laser range sensor and rotating curved mirrors for taking 3D laser reflecting points of objects in real space. I developed a 3D laser range sensor system, in ...which the 2D laser range sensor and the curved mirrors rotated about the sensor. The 2D laser range sensor takes reflecting points in 2D plane and widefield area around the sensor. The rotating curved mirrors reflect the laser from the 2D laser range sensor, and change direction of the laser radially from 2D plane to 3D wide-field space around the 3D laser range sensor system. I designed the curved mirror by reflected and changed radiate direction of the laser from 2D plane to 3D space. I made up hardware and software of the sensor system to control the sensor system. I checked scanning accuracy of the curved mirror in the sensor system. I took actual reflecting points in real space experimentally by using the developed sensor system. The results have shown the usefulness on the real environmental measurements.
Compared with normal reflecting scanning transform Spectrometry, cube-based Spectrometr is a key component in the time-based modulation interference spectrometer, it have more compact structure ...,using less accessory , easy to fix up , more steadily and more practicality . Calculations on optical path difference (OPD) of spectrometry play an important role in analyzing and improving of the structure. Following the law of Malus and the geometrical relationship of model, get the formula of OPD and the affective factors .The calculation results demonstrate that OPD is closely related to the tilted angel of rotating reflector , the size of cube reflector and the refractive index of reflector. And this kind of spectrometry has the character of high resolution, especial in some spectrum.
With the development of space technology and aerospace industry, space distance measurement has become an important research content in space field. The traditional radar ranging is easily interfered ...by space high-energy particles and electromagnetic waves in space, and the measurement accuracy is low, which cannot meet the requirements of high-precision measurement. The air in the space is thin and the temperature changes violently, so it is impossible to carry out acoustic ranging with super measurement accuracy. Laser ranging technology is an automatic non-contact measurement method, which is not sensitive to electromagnetic interference, has strong anti-interference ability and high measurement accuracy. Compared with the general optical ranging technology, it has the advantages of convenient operation, simple system and allday working. Compared with radar ranging, laser ranging has strong anti-interference ability and high precision. In this paper, a high-speed synchronous rotating mirror system is developed to meet the requirements of the splitting of the transmitting and receiving optical paths in laser ranging. It is installed in the optical path of the large-scale laser ranging system, driving the mirror body to rotate stably and at high speed, realizing the splitting of the optical path and generating the pulse signal synchronous with the mirror body position to send to the laser, which is used for the timing of launching the synchronous laser machine. Finally, through the experimental test, when the speed reaches 3000 rpm, the peak speed error is less than 1rmp（PP）, the mirror shake amount is 15.56 ", and the equipment vibration is 8.9 μ m, which meets the needs of the scheme10.
Spraying robots are particularly expected in viticulture and arboriculture to safely target and adapt the quantities of phytosanitary products on canopy. However, to maintain a financial ...profitability for the farmer wishing to adopt a robotized solution, the cost must be reduced. Therefore, instead of adding expensive and redundant sensors to measure the shape of the vegetation close to the robot, this paper investigates the possibility to deflect by a rotating mirror a part of the laser beams of the horizontal 2D LiDAR positionned in front of most of the current mobile robots for security and navigation purposes. This use of the 2D LiDAR aims to obtain at low cost the required 3D information on the canopy. Experimental results on a real spraying robot enable to highlight the interest of this approach: the presence and height of the canopy can be accurately measured, and the nozzles of the spraying boom can be controlled independantly and accordingly. To focus the measurements on a certain area, the angular variations of the mirror can be reduced or on the contrary increased to have a global overview of the environment. This original approach opens new opportunities with a 2D LiDAR for other configurations and field applications.
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