ABSTRACT
In order to meet the need of interactive fault diagnosis of non-contact fee control card meter, this paper designs a device for interactive data acquisition of fee control card meter. The device can monitor and store interactive data and analyze and extract interactive information in the interaction state between smart meters and power purchase cards. In the non-interactive state, one of the smart meters and the power purchase card can be simulated to initiate communication with the other. The equipment includes two parts: hardware and software. The hardware part is composed of portable chassis, embedded controller and self-designed data acquisition and processing hardware. The acquisition and processing hardware includes dedicated analog circuit, ARM, FPGA, etc., which can realize the mutual conversion of interactive magnetic signal and electrical signal, electrical signal pre-processing, analog-to-digital conversion, digital-to-analog conversion, mixing and other functions. The software runs on the controller to realize the functions of information processing, extraction, time-frequency analysis and so on.
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