System to detect and transmit sensor data using power transmission lines.

摘要

A system is designed to detect an event via sensors within a place of our interest and transmit the video data over the power transmission lines to a desired monitoring location. The sensor data is then decoupled from the power signal and used accordingly. The event may be an unauthorized entry to this place, a fire or any other undesirable activity. These events are detected with the help of sensors and monitored by video devices. This data may be accessed by a variety of authorized users including the owner or the manager, a central monitor, local police, fire, or emergency medical personnel, or other entities specified by the owner or the manager. This system allows the authorized users to view the event live or using a recorded tape. A bypass circuit is formed across the power transformer, present in between the electric overhead lines, for the data to circumvent the transformer. This is because the transformer acts as a low pass filter for the high frequency data signals passing through it and attenuates them. Specifications for each component being used in the invention are also provided with the block diagrams for the connections between the components.