B code clock synchronization device for field calibration of electronic mutual inductors

Abstract

The invention provides a B code clock synchronization device which is used for the clock synchronization and punctuality of electronic mutual inductor calibration systems. By using an FPGA (Field Programmable Gate Array)-based SOPC (System on Programmable Chip) system and a peripheral interface conversion circuit, the B code clock synchronization device is capable of receiving and decoding B code signals, generating B codes and synchronous second pulse signals, receiving optic input signals or electric input signals and outputting the optic signals and the electric signals of synchronous signals at the same time, and has forward and reverse functions; and the synchronization precision of the signals can be within 100ns, therefore, the B code clock synchronization device is adapted to the field calibration and laboratory calibration of the electronic mutual inductors of different factories and capable of providing guarantee for the reliable field calibration of the electronic mutual inductors.

Description

Technical field [0001] The invention relates to a B code clock synchronization device used for on-site and laboratory verification of electronic transformers, in particular to a B code clock synchronization device used for electronic transformer verification systems, and belongs to the technical fields of photoelectric technology and electrical instrumentation . Background technique [0002] Instruments and equipment such as electronic transformers and digital electric energy meters are important equipment for the construction of digital substations. Since digital measurement products such as electronic transformers and digital electric energy meters output digital signals, when it is necessary to calibrate it, the merging unit and the electronic transformer calibrator must simultaneously sample the same signal, and then The output digital quantity is compared and the error is obtained. Therefore, the synchronous clock device is an important part of digital measurement equipment...

AI Technical Summary

Problems solved by technology

[0003] Existing B-code clock synchronization devices are mainly B-code decoding devices designed with frameworks such as FPGA and single-chip microcomputers. The disadvantage of this type of method is: this type of device can only receive B-code signals, and cannot send B-code and second pulse synchronization signals. The synchronization accuracy of the signal is generally on the order of microseconds, and it is not compatible with optical and electrical interface inputs, so it cannot be applied to field verification and laboratory verification of electronic transformers

This device cannot be applied to field verification and laboratory verification of electronic transformers

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