Abstract: A system for detecting and identifying signals in real-time. The system includes an antenna for capturing electromagnetic signals, an analog-to-digital converter (ADC) to convert the captured electromagnetic signals into digital signals, a database containing stored signal data, and a processor. The processor performs a Fast Fourier Transform (FFT) on the digital signals to determine energy characteristics of the digital signals and compares the energy characteristics with the stored signal data. The processor buffers the digital signals to produce a buffered digital signal set and channelizes the buffered digital signal set to produce a plurality of buffered digital signal sets. The processor performs a cyclostationary algorithm on the plurality of buffered digital signal sets to detect cyclic characteristics of the digital signals and compares the cyclic characteristics with the stored signal data. The processor identifies digital signals based on the comparisons and displays the identified digital signals.

Abstract: A system for providing monitoring of HVAC systems includes a database comprising a plurality of computing device records, and a plurality of technician records. The system further includes a computing device connected to the HVAC system, the computing device comprising a network interface device, an optical sensor located adjacent to one or more light emitting devices of the HVAC system, and a processor for reading the sensor data from the optical sensor and transmitting the sensor data to a server. The system further includes a server for receiving the sensor data, finding a technician within the vicinity that can service the HVAC system and sending a message to the technician including the sensor data and the contact information for the owner of the HVAC system, so that the technician may service the HVAC system.

Abstract: A heat sink (10) includes a circular base (20), a plurality of fins (30), and a central post (40). The base is adapted to be in thermal contact with an electronic device, to remove heat therefrom. The post extends from a top surface (26) of the base. The post has a first surface connected to the top surface and a second surface (44) dimensioned according to a heat sink fan to be attached thereon. The post also has a concave side surface (42) between the second surface of the post and the top surface of the base, for directing airflow. The fins are identical in height to the post. The fins are curved, aligned and spaced from each other at uniform intervals corresponding to directions of airflow generated from the fan. These minimize resistance to cooling air entering or exiting the heat sink.

Abstract: A heat sink (10) includes a circular base (20), a plurality of fins (30), and a central post (40). The base is adapted to be in thermal contact with an electronic device, to remove heat therefrom. The post extends from a top surface (26) of the base. The post has a first surface connected to the top surface and a second surface (44) dimensioned according to a heat sink fan to be attached thereon. The post also has a concave side surface (42) between the second surface of the post and the top surface of the base, for directing airflow. The fins are identical in height to the post. The fins are curved, aligned and spaced from each other at uniform intervals corresponding to directions of airflow generated from the fan. These minimize resistance to cooling air entering or exiting the heat sink.