Low-voltage power line carrier channel detector

Abstract

The invention discloses a low-voltage power line carrier channel detector, which is characterized by comprising a power frequency isolation high-frequency sampling circuit, an A / D (Analog to Digital) sampling circuit, an FPGA+DSP (Field Programmable Gate Array + Digital Signal Processor), a core unit, a carrier module, a carrier attenuation and power frequency isolation circuit, a long data storage system, a human-computer interface and an interface unit. The invention has the advantages that: high-band noise of a low-voltage power line is sampled, analyzed and displayed in matching with a carrier communication testing function, thus users can analyze and judge a carrier communication problem generated in a process of debugging or overhauling a field of centralized meter-reading with low voltage. The low-voltage power line carrier channel detector mainly comprises the power frequency isolation high-frequency sampling circuit, the A / D (Analog to Digital) sampling circuit, the FPGA+DSP (Field Programmable Gate Array + Digital Signal Processor), the core unit, the carrier module, the carrier attenuation and power frequency isolation circuit, the long data storage system, the human-computer interface, the interface unit and the like.

Description

Technical field [0001] The invention relates to a low-voltage power line carrier channel detector, which is used for low-voltage power line carrier channel detection and carrier communication function judgment. Background technique [0002] Low-voltage power line carrier communication is a communication method that uses low-voltage power lines as the transmission carrier. There are a lot of researches in this area at home and abroad. There are already a considerable number of products on the market that are used in meter reading, information collection and other fields. Power frequency electric energy is not specially laid for carrier communication. These low-voltage lines have high-frequency noise and attenuation characteristics, which cause various communication problems in the debugging and field application of carrier products, and users lack the necessary detection The equipment is unable to analyze and judge, which affects the promotion speed of carrier products. Summary o...

AI Technical Summary

Problems solved by technology

[0002] Low-voltage power line carrier communication is a communication method using low-voltage power lines as a transmission carrier. There are many researches in this area at home and abroad. There are already a considerable number of products on the market that are used in meter reading, information collection and other fields. Industrial frequency power is not designed for carrier communication. These low-voltage lines have high-frequency noise and attenuation characteristics, which cause various communication problems in the process of debugging and field application of carrier products, and users lack the necessary detection. The equipment cannot be analyzed and judged, which affects the promotion speed of carrier products

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