In this paper we have proposed face recognition door lock system using raspberry pi for security purpose. Implementation of the system is for monitoring whether any unknown person is entering in to the door. We have established communication with electronic devices through face detection with the help of Pi camera Raspberry Pi platform. For software coding Python and Open CV libraries are used. In order to get accurate and clear picture of an intruder we have proposed Haar classifier method for face detection. As soon as the person enters near the door, pi camera captures the image and face detection process is done then if it matches with database images then the door is unlocked otherwise a message with the picture of a person will be sent to the registered mobile through GSM and LAN network.
In power system transmission and distribution transformers plays crucial role. As per the consumer requirement the transformers either step up or step down voltages and deliver the power. Sometimes they are operating under overload conditions. In this paper, Microcontroller and different types of sensors can be used to protect the transformer against over load and various internal faults. Real time monitoring of the transformer is also an important part in the transformers protection. A prototype hardware module has designed to sense the temperature raise and pressure in the transformer tank using micro controller based sensors. The monitoring and protection can avoid various faults in the transformer and it can give better performance.
Solar Energy (SE) is the primary energy source and that is freely available in all the regions in the world. The isolated and remote areas can electrify using SE and it is pollution-free for electric power generation. This paper presents the generation of electrical energy from the solar photo voltaic system (SPVS). The SPVS output can increase with the help of synchronised maximum power point solar tracking system (SMPPSTS), hence the system efficiency can be increased. The load on the system is regulated with the effective operation of controller, relays, driver circuit, and sensors.
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