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[IEEE 2018 2nd International Symposium on Multidisciplinary Studies and Innovative Technologies (ISMSIT) - Ankara, Turkey (2018.10.19-2018.10.21)] 2018 2nd International Symposium on Multidisciplinary Studies and Innovative Technologies (ISMSIT) - The setup cost payback times of 1 kW fixed and dual axis tracking solar energy systems
摘要： In this paper an 80 W optimally tilted fixed solar energy system and an 80 W azimuth-altitude dual solar axis tracking system are designed and analyzed. The systems are mounted on the roof an industrial building in Sakarya, Turkey. The fixed solar energy system is tilted at the yearly optimum tilt angle for the city. The tracking system is designed to follow the Sun’s position by means of solar mathematics. The electrical behavior of the systems are observed for six months and the obtained results are used to evaluate the setup cost payback times of 1 kW applications. In conclusion it is determined that the fixed solar energy system pay back its setup cost in 7.18 years and the tracking solar energy system in 10.73 years.
关键词： solar tracking system,fixed solar energy system,optimally tilted,setup cost payback time
更新于2025-09-23 15:23:52
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[IEEE 2018 IEEE Asia-Pacific Conference on Antennas and Propagation (APCAP) - Auckland (2018.8.5-2018.8.8)] 2018 IEEE Asia-Pacific Conference on Antennas and Propagation (APCAP) - An Automatic Sun Tracking System for Fiber Optic Lighting
摘要： An automatic sun tracking system for fiber optic lighting is proposed. Using STC89C52RC microcontroller as the core controller, together with the steering gear to control the system daylighting, the system is able to trigger the sun tracking system and auxiliary lighting system automatically for overheating protection and brightness adjustment. A practical sun tracking system with hardware and software is implemented and validated by experiments.
关键词： steering gear,sensor,sun tracking system,Fiber optic lighting
更新于2025-09-23 15:23:52
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[ACM Press the 12th International Conference - Eindhoven, Netherlands (2018.09.03-2018.09.04)] Proceedings of the 12th International Conference on Distributed Smart Cameras - ICDSC '18 - Hand-Eye Camera Calibration with an Optical Tracking System
摘要： This paper presents a method for hand-eye camera calibration via an optical tracking system (OTS) faciltating robotic applications. The camera pose cannot be directly tracked via the OTS. Because of this, a transformation matrix between a marker-plate pose, tracked via the OTS, and the camera pose needs to be estimated. To this end, we evaluate two different approaches for hand-eye calibration. In the first approach, the camera is in a fixed position and a 2D calibration plate is displaced. In the second approach, the camera is also fixed, but now a 3D calibration object is moved. The first step of our method consists of collecting N views of the marker-plate pose and the calibration plates, acquired via OTS. This is achieved by keeping the camera fixed and moving the calibration plate, while taking a picture of the calibration plate using the camera. A dataset is constructed that contains marker-plate poses and the relative camera poses. Afterwards, the transformation matrix is then computed, following a least-squares minimization. Accuracy in hand-eye calibration is computed in terms of re-projection error, calculated based on camera homography transformations. For both approaches, we measure the changes in accuracy as a function of the number of poses used for each calibration, while we define the minimum number of poses required to obtain a good camera calibration. Results of the experiments show similar performances for the two evaluated methods, achieving a median value of the re-projection error at N = 25 poses of 0.76 mm for the 2D calibration plate and 0.70 mm for the 3D calibration object. Also, we have found that minimally 15 poses are required to achieve a good camera calibration.
关键词： optical tracking system,neurosurgery,augmented reality,Hand-eye calibration,endoscope,tracking
更新于2025-09-23 15:21:01
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Experimental Assessment of a Smart Sun Tracking System Consumption for the Improvement of a Crystalline Silicon Photovoltaic Module Performance under Variable Weather Conditions
摘要： Sun tracking systems are often used to improve the performance of crystalline silicon photovoltaic plants. However, their power consumption still remains a challenge till date. In this paper, a low power consumption sun tracking system has been implemented for driving a crystalline silicon photovoltaic module under variable weather conditions. The experimental results showed that this sun follower consumes less than 1% of the increased energy. Taking into account the tracker consumption, the energy gain can attain up to 25% under the same weather conditions compared to a fixed photovoltaic system. In addition to that, results gotten from data-based simulations are coherent with experimental results.
关键词： smart sun tracking system,supervision algorithm,data-based simulations,performance of photovoltaic module,microcontroller unit
更新于2025-09-23 15:19:57
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Study on Features of 532nm Laser as Laser Source of Lidar
摘要： The laser source of Lidar usually uses the high power solid laser, the performance of Lidar depends on the laser features, so that to study the laser features is contribute to optimizing the performance of Lidar. Set up and design a pulse solid laser of Nd3+:YAG as the working substance. Through adopting the KTP crystal frequency multiplication technology outside the laser cavity and electro-optic q-switch technique, the maximum dynamic pulse energy of 155mJ and pulse width of 9.6 ns with the 532nm laser is generated. Using the oscilloscope, photoelectric pulse sensor and laser energy meter to measurement the experimental data of the laser source features Through analyze and discuss the experimental data, the relationship between the pulse width, the static and dynamic ratio, the peak power of the pulse Nd3+:YAG laser, the frequency doubling efficiency of the KTP crystal and the input power of laser are given, the solid laser system and the experimental data can provide a basic equipment and reference data to the further study.
关键词： 532nm laser,High power,Laser tracking system,Nd3+:YAG laser
更新于2025-09-16 10:30:52
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[IEEE 2019 18th International Conference on Optical Communications and Networks (ICOCN) - Huangshan, China (2019.8.5-2019.8.8)] 2019 18th International Conference on Optical Communications and Networks (ICOCN) - Efficient and Range-Variable Laser Wireless Charging Technology
摘要： The conversion efficiency of photovoltaic cells, charging distance and tracking technology are three important indicators of laser wireless charging technology. This paper demonstrates an efficient laser wireless charging scheme with variable charging distance and a simple tracking system. The laser wireless charging system proposed in this paper is mainly composed of 808nm laser, zoom beam expander, GaAs photovoltaic cell and the energy management module. By increasing the uniformity of laser spot energy distribution, the conversion efficiency of GaAs photovoltaic cells reaches 35.3%. Reduce system cost by simplifying the tracking system. Using zoom beam expander, the charging distance ranges from 10 to 50 meters.
关键词： GaAs photovoltaic cell,Zoom beam expander,Tracking system,Laser wireless charging
更新于2025-09-16 10:30:52
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AIP Conference Proceedings [AIP Publishing LLC 11TH INTERNATIONAL CONFERENCE ON CONCENTRATOR PHOTOVOLTAIC SYSTEMS: CPV-11 - Aix-les-Bains, France (13–15 April 2015)] - MISPS solar position sensor development and field tests
摘要： A solar position sensor integrated within concentrated photovoltaics (CPV) module enclosure has been developed and manufactured using several different techniques and substrates. The sensor is made from standard monocrystalline Si cells which have been laser cut in eight pieces divided in two sectors, providing very large acceptance and high accuracy to an hybrid tracking system, simplifying CPV systems commissioning activities.
关键词： monocrystalline Si cells,hybrid tracking system,concentrated photovoltaics,solar position sensor
更新于2025-09-12 10:27:22
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[IEEE 2018 International Ural Conference on Green Energy (UralCon) - Chelyabinsk, Russia (2018.10.4-2018.10.6)] 2018 International Ural Conference on Green Energy (UralCon) - Simulation Model of Autonomous Solar Power Plant with Dual-Axis Solar Tracker
摘要： The article provides a description of a simulation model of a solar power station with an automated dual-axis solar tracker, which was developed using MATLAB/Simulink. The presented development includes a random weather generator (intensity of solar radiation), automated load redundancy, and also simultaneous use of two types of solar cells such as monocrystalline and polycrystalline. This paper presents the results of modeling, which prove the effectiveness of the application of solar modules with a dual-axis solar tracker in comparison with statically located modules. In addition, on the basis of the conducted analysis of the modeling solar power station work in MATLAB/Simulink optimum operating conditions of a photovoltaic plant have been identified. The developed model will allow for researching the characteristics of a solar power plant and predicting the amount of energy generated by solar panels in a specific place.
关键词： designing a solar tracking-system,modeling dual-axis solar tracker,simulation model of solar power plant,simulation of solar PV model in MATLAB
更新于2025-09-11 14:15:04
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Centroid tracking and velocity measurement of white blood cell in video
摘要： Automated blood cells tracking system has a vital role as the tracking process reflects the blood cell characteristics and indicates several diseases. Blood cells tracking is challenging due to the non-rigid shapes of the blood cells, and the variability in their videos along with the existence of different moving objects in the blood. To tackle such challenges, we proposed a green star based centroid (GSBC) moving white blood cell (WBC) tracking algorithm to measure its velocity and draw its trajectory. The proposed cell tracking system consists of two stages, namely WBC detection and blob analysis, and fine tuning the tracking process by determine the centroid of the WBC, and mark the centroid for further fine tracking and to exclude the bacteria from the bounding box. Furthermore, the speed and the trajectory of the WBC motion are recorded and plotted. In the experiments, an optical flow technique is compared with the proposed tracking system showing the superiority of the proposed system as the optical flow method failed to track the WBC. The proposed system identified the WBC accurately, while the optical flow identified all other objects lead to its disability to track the WBC.
关键词： Trajectory analysis,Video processing,Cell detection,Velocity measurements,Blob analysis,White blood cell,Tracking system
更新于2025-09-10 09:29:36
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[IEEE 2018 International Conference on Applied and Theoretical Electricity (ICATE) - Craiova, Romania (2018.10.4-2018.10.6)] 2018 International Conference on Applied and Theoretical Electricity (ICATE) - Software Control Method for a Solar Tracking System
摘要： Solar collector technologies operate with better performance when the Sun beam direction is normal to the capturing surface, and for that to happen despite the relative movement of the Sun, solar tracking systems are used. Therefore, there are rules and standards that need minimum accuracy for these tracking systems to be used in solar collectors’ evaluation. Obtaining accuracy is one of the key tasks in such a system. This paper presents the software method of a solar tracker system that uses a webcam as the sensing device combined with image processing technique that is developed in the computer to locate the location of the Sun’s position.
关键词： solar tracking system,C++ programming,webcam,image processing,OpenCV
更新于2025-09-09 09:28:46