Circuit and method for automatically identifying output short circuit of electronic ballast

By designing an automatic identification circuit in the electronic ballast, using voltage acquisition and microcontroller control, the working status of the UV sterilization lamp is monitored in real time and short-circuit faults are solved, and the safety and reliability of the equipment are improved.

CN119729928APending Publication Date: 2025-03-28SUZHOU BAIWO PRECISION ELECTRONIC TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202510150446.0
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-02-11
Publication Date
2025-03-28

AI Technical Summary

Technical Problem

When a traditional electronic ballast occurs in a short circuit failure in the UV sterilization lamp, it is difficult to detect it in real time, resulting in the equipment being in an unsafe state for a long time, affecting the life and operation stability.

Method used

A circuit is designed to automatically identify the short circuit of the electronic ballast output, including a driving circuit, an ultraviolet sterilization lamp wiring module, a microcontroller and a voltage acquisition circuit. Through voltage acquisition and microcontroller control, the working status of the ultraviolet sterilization lamp is monitored in real time, and the driving circuit is cut off in time when a short circuit is faulty.

Benefits of technology

Real-time and accurate detection and handling of short-circuit faults of UV sterilization lamps is realized, preventing damage to electronic ballasts, improving safety and reliability, and reducing manual inspection and maintenance costs.

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Abstract

The invention discloses a circuit and a method for automatically identifying an output short circuit of an electronic ballast, and relates to the field of electronic ballasts.The circuit comprises a driving circuit, an ultraviolet germicidal lamp wiring module, a single-chip microcomputer and a voltage acquisition circuit; the ultraviolet germicidal lamp wiring module is used for providing working voltage for the ultraviolet germicidal lamp; the input end of the driving circuit is connected with the output end of the single chip microcomputer, the output end of the driving circuit is connected with the input end of the ultraviolet germicidal lamp wiring module and the input end of the voltage acquisition circuit, and the driving circuit is used for outputting driving voltage of the ultraviolet germicidal lamp wiring module; the voltage acquisition circuit is used for acquiring driving voltage; the single-chip microcomputer determines the working state of the ultraviolet germicidal lamp according to the driving voltage, and immediately controls the driving circuit to stop working when the ultraviolet germicidal lamp has a short-circuit fault. According to the application, the short-circuit fault of the ultraviolet germicidal lamp line can be accurately detected in real time, and the driving circuit of the electronic ballast is timely cut off, so that the electronic ballast is protected.
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