Measuring circuit for phase difference of all-electronic onboard transformer
By designing a fully electronic onboard transformer phase difference measurement circuit, the problem of inaccurate phase measurement of onboard transformers was solved, thereby improving production yield and product stability.
CN224416950UActive Publication Date: 2026-06-26XIAN RAILWAY SIGNAL
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Patent Information
- Application Number
- CN202423137761.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-19
- Publication Date
- 2026-06-26
- Estimated Expiration
- 2034-12-19
AI Technical Summary
Technical Problem
Existing technology cannot accurately measure the phase of onboard transformers, affecting the proper operation of the fully electronic interlocking system.
Method used
Design a circuit for measuring the phase difference of an all-electronic on-board transformer, including an AC power supply, a DC power supply, primary and secondary sampling circuits, a filter circuit, an analog multiplier, and an AC signal amplitude detection circuit. The circuit calculates the phase difference between the primary and secondary voltages and displays it in digital form.
Benefits of technology
It enables precise measurement of the phase difference of onboard transformers, improving the yield rate of board production and ensuring stable product operation.
✦ Generated by Eureka AI based on patent content.
Abstract
The utility model belongs to a measuring circuit for phase difference of a full-electronic onboard transformer. The measuring circuit comprises an alternating current power supply for providing primary voltage for the transformer, a direct current power supply for supplying power to a digital circuit, a primary sampling circuit, a secondary sampling circuit, a filter circuit, an analog multiplier, a processor and a display. An alternating-current power supply provides voltage for the primary side of a transformer, the primary sampling circuit and the secondary sampling circuit filter the primary voltage and the secondary voltage of the transformer through the filter circuit and then send the filtered voltage to the input end of the analog multiplier, an output signal is sent to the processor, an analog signal is converted into a digital signal, and the amplitude of positive and negative half waves of the signal is compared. And the phase difference of the primary and secondary phases is accurately calculated and is displayed in the display in a digital form, so that the phase of the transformer in the full-electronic interlocking circuit board can be accurately measured, and the yield of batch production of products is improved.
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