Abstract: A method, apparatus, and system for detecting a signal of interest. According to some embodiments, a power of a frequency component of a signal is determined. The power is accumulated for a first period and a second period, the second period being shorter than the first period. Power spectrum information may be found, and high and normalized power spectrum information may be determined and compared.

Abstract: A method, apparatus, and system for detecting a signal of interest.

Abstract: A method, apparatus, and system for detecting a signal of interest. According to some embodiments, a power of a frequency component of a signal is determined. The power is accumulated for the long and short term, and a delta integrated power spectrum (e.g., a difference between the accumulated power for the long-term and the accumulated power for the short-term) is found. A high delta integrated power spectrum and a normalized delta integrated power spectrum may also be found. It may then be determined whether the high delta integrated power spectrum represents a signal of interest by comparing the power of the high delta integrated power spectrum to the power of the normalized delta integrated power spectrum.

Abstract: A method, apparatus, and system for detecting a signal of interest.

Abstract: A utility meter is able to receive programs for adding functionality to the meter over a computer network. The meter includes an interpreter for executing an interpretive language program and a computer network access port for receiving an interpretive language program from another computer over a computer network. The interpreter executes the interpretive language program to provide a meter function for the utility meter. In one embodiment, the interpreter is a Java Virtual Machine that interprets Java applets or Java scripts. The ability to write meter functions in a machine independent language such as Java or Active X enables utility customers to write and download additional functionality to meters over the Internet without requiring the meter manufacturer to develop a meter function program.