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- 摘要
- 关键词
- 实验方案
- 产品
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[IEEE 2018 IEEE PES/IAS PowerAfrica - Cape Town, South Africa (2018.6.28-2018.6.29)] 2018 IEEE PES/IAS PowerAfrica - Efficient Energy Management System Using Pir Sensor
摘要： In most developing countries like Nigeria, the demand for electrical energy outweighs the supply. Negative economic and environmental impacts are also associated with its generation, transmission, and consumption. As a result there is need for the available energy to be efficiently managed. This project designed and implemented a microcontroller based energy saver and management system. The design of the energy saver and management system was aimed at coordinating the manner of use of electrical appliances, thereby reducing energy consumption in electrical appliances (such as fan and light) and devising a means of reducing the need for human intervention in the control of electrical appliances in a residential building. The project consists of a PIC microcontroller that utilizes a PIR sensor to detect occupants’ presence in the building; it also has a light intensity detection unit used to determine the level of ambient lighting as well as a temperature sensor to determine ambient temperature. The control signal from the microcontroller was used to operate the load driver circuit to switch the appliances on or off. The results show that the designed system can reduce the level of energy consumption effectively and efficiently.
关键词： load driver circuit,appliances,temperature sensor,light intensity detection,PIC microcontroller,Energy saver and Management system
更新于2025-09-23 15:21:21
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Use of a?laser fluorescence device for the in vitro activity assessment of incipient caries lesions; Einsatz eines Laserfluoreszenzverfahrens zur Erfassung der Aktivit?t von initialen kari?sen L?sionen in vitro;
摘要： Purpose To evaluate the progression of demineralization during orthodontic treatment, the assessment of lesion activity is important in addition to the detection of lesion extent. This study aimed to evaluate the ability of laser ?uorescence measurements to differentiate between active and inactive initial lesions in vitro. Methods In all, 63 extracted, permanent human teeth were available for the study. On each occlusal investigation site, surface extent and activity of caries lesions were classi?ed visually using ICDAS/ICCMS (International Caries Detection and Assessment System/International Caries Classi?cation and Management System) criteria, following laser ?uorescence measurements. Teeth were hemisected and assessed for lesion depth. Methyl red dye was applied to validate lesion activity on the sections. A Mann–Whitney U-test was performed to evaluate differences between laser ?uorescence measurements for active and inactive lesions. For visual and laser ?uorescence ?ndings, diagnostic accuracy (Az, sensitivity and speci?city) were calculated. Results A total of 19 sound surfaces and 44 surfaces with ICDAS codes 1/2 were classi?ed visually. The differences in laser ?uorescence measurements between active and inactive lesions were not signi?cant for the initial lesions (p > 0.05). Sensitivity/speci?city for lesion depth was 90.5/92.3% (Az = 0.894), respectively, for visual assessment and 69.1/76.9% (Az = 0.745), respectively, for laser ?uorescence. Sensitivity/speci?city for activity assessment was 68.6/85.0% (Az = 0.768) for the visual method. For laser ?uorescence measurements, no diagnostic accuracy values could be calculated for caries activity assessment. Conclusion The visual detection and activity assessment of initial lesions was more suitable than the laser ?uorescence method. Based on the results of this in vitro study, use of laser ?uorescence cannot be recommended for distinguishing between active and inactive initial caries lesions on occlusal surfaces.
关键词： International Caries Detection and Assessment System,Caries activity,Enamel caries,International Caries Classi?cation and Management System
更新于2025-09-16 10:30:52
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[IEEE 2019 IEEE PES Innovative Smart Grid Technologies Conference - Latin America (ISGT Latin America) - Gramado, Brazil (2019.9.15-2019.9.18)] 2019 IEEE PES Innovative Smart Grid Technologies Conference - Latin America (ISGT Latin America) - A Monitoring and Management System for Medium-Scale Photovoltaic Plants
摘要： Photovoltaic (PV) energy use is growing fast all over the world, due to new policies to reduce the application of fossil fuels. However, for achieving higher ef?ciency in the Renewable Power Plants (RPP), some Monitoring and Management System (MMS) are required, aiming to ?nd the optimal operating conditions for the system. The main goal of a monitoring system is to evaluate the RPP’s performance, throughout its operating time. In the same way, a management system aims to administrate and act over the system, in order to maximize its performance. In this scenario, the main objective of this paper is the proposition of one MMS, which focuses speci?cally on micro-generation (medium-scale), creating the possibility for ?nal users and for Electric Utility Companies monitoring and operating plant parameters. In order to achieve that, electrical and environmental variables are monitored and computationally analyzed, producing instantaneous and historical data, allowing to estimate the plant ef?ciency and some actions over the plant’s parameters, such as the power factor through the power inverter. We present the initial results of this MMS including a detailed description of each stage of the system, calibration procedures and a short-period monitoring, showing the feasibility of the proposal in a reduced PV plant of 5kW.
关键词： Monitoring and Management Systems,Renewable Energy,Photovoltaic Systems
更新于2025-09-12 10:27:22
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[IEEE 2019 24th OptoElectronics and Communications Conference (OECC) and 2019 International Conference on Photonics in Switching and Computing (PSC) - Fukuoka, Japan (2019.7.7-2019.7.11)] 2019 24th OptoElectronics and Communications Conference (OECC) and 2019 International Conference on Photonics in Switching and Computing (PSC) - Fragmentation-Based Quantum Key Distribution (QKD) in WDM Networks
摘要： To integrate QKD with WDM networks without affecting the provisioning of classical service requests, we propose a wavelength fragmentation assignment scheme for QKD devices, which uses Tabu search to get satisfied secure key rate.
关键词： wavelength fragmentation,quantum key distribution,optical network,control and management
更新于2025-09-12 10:27:22
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[IEEE 2019 24th OptoElectronics and Communications Conference (OECC) and 2019 International Conference on Photonics in Switching and Computing (PSC) - Fukuoka, Japan (2019.7.7-2019.7.11)] 2019 24th OptoElectronics and Communications Conference (OECC) and 2019 International Conference on Photonics in Switching and Computing (PSC) - Flexible Management of WDM-PON Using AMCC for 5G Radio Access Networks
摘要： This paper overviews flexible management functions of WDM-PON using an auxiliary management and control channel and introduces wavelength allocation, adjustment as use-cases.
关键词： Optical access networks for post 5G mobile service,Future high capacity and long-reach access networks including WDM-PON, OFDM-PON, TWDM-PON,Access Network and Subsystem,Optical access network architecture, design, protection, and management
更新于2025-09-11 14:15:04