Modern technologies have reached our garage to secure the cars and entrance to the residences for the demand o f h igh security and automated infrastructure. The concept of intelligent secure garage systems in modern transport management system is a remarkable example of the co mputer interfaced controlling devices. License Plate Recognition (LPR) process is one of the key elements of modern intelligent garage security setups. This paper presents a design of an automated secure garage system featuring LPR process. A study of templates matching approach by using Optical Character Recognition (OCR) is implemented to carry out the LPR method. We also developed a prototype design of the secured garage system to verify the application for local use. The system allo ws only a predefined enlisted cars or vehicles to enter the garage while blocking the others along with a central-alarm feature. Moreover, the system maintains an update database of the cars that has left and entered into the garage within a part icular duration. The vehicle is d istinguished by the system mainly based on their registration number in the license plates. The tactics are tried on several samples of license plate's image in both indoor and outdoor setting.
Active power filter (APFs) has been used to mitigate the harmonic pollution in an electrical network. Reference current estimation is an important part for control of an active power filter. In any inaccuracy in generation of reference current, it yields to poor compensation in load current harmonics. This paper deals with five types of time domain control techniques for real time compensating current for shunt hybrid active power filter. This work also reveals the advantages and disadvantages of the practiced control strategies. The five strategies are analyzed and compared in terms of their performance under balance source and balance load conditions. The comparison and effectiveness of all the methods are based on the theoretical analysis and simulation results obtained with MATLAB/SIMULINK power system block set employing in a three phase three wire network. Here, a three phase six pulse rectifier with R-Load is considered as a nonlinear load.
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