Signal power detection method

Abstract

The invention discloses a signal power detection method. At present, most study on low-voltage power line communication technology in China mainly places emphasis on the expansion and development by using the abroad existing curing chip; the study on the channel characteristics and channel models of the low-voltage power distribution network mostly remains in the theoretical level. The study relevant to a low-voltage power line simulation experiment system is relatively rare at present. Most study has smaller entry point, and mainly performs analysis by aiming at a certain characteristic; an overall simulation experiment system design scheme and realization method is not provided. The narrowband receiving machine scheme is used by the signal power detection provided by the invention; the frequency response performance is good; the addition of a local oscillation circuit is needed; the circuit complexity is increased. The up-frequency conversion and high-intermediate-frequency scheme isused on a machine; 10.7M intermediate frequency is selected and used; the influence on the measurement caused by image frequency and signal harmonic wave can be effectively avoided; meanwhile, the design difficulty of a front stage band-pass filter can be reduced through the use of the high-intermediate-frequency scheme.

Description

technical field [0001] The invention relates to the technical field of signal power detection, in particular to a signal power detection method. Background technique [0002] At present, most domestic research on low-voltage power line communication technology mainly focuses on the expansion and development of existing foreign solidified chips, while the research on channel characteristics and channel models of low-voltage distribution networks mostly stays at the theoretical level. The research related to the low-voltage power line communication simulation experiment system is still relatively rare. However, most of the studies have a small entry point, mainly analyzing a certain characteristic, and have not proposed a comprehensive simulation experiment system design scheme and implementation method. At the same time, the enterprise trial-produced some carrier communication test equipment in combination with the actual problems encountered in the production process, appli...

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Problems solved by technology

However, most of the studies have a small entry point, mainly analyzing a certain characteristic, and have not proposed a comprehensive simulation experiment system design scheme and implementation method

At the same time, the enterprise trial-produced some carrier communication test equipment in combination with the actual problems encountered in the production process, applied for relevant patents, and formulated enterprise standards to lay the foundation for the development of low-voltage power carrier test system hardware equipment, but failed to unify various Test Equipment and Test Methods

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