Fault detection and protection device for direct-current high-frequency switching power supply

Abstract

The invention discloses a fault detection and protection device for a direct-current high-frequency switching power supply. The device comprises a casing, a detection device, a wiring board, a mounting board and a liquid crystal display screen, wherein an infrared thermal imager is arranged at the top end inside the casing, the detection device is arranged below the infrared thermal imager, a connection circuit is arranged inside the detection device, a processor is arranged above the connection circuit, a horn is arranged above the processor, and a wireless communication chip is arranged on one side of the horn. The device has the beneficial effects that the infrared thermal imager is arranged, infrared detection can be performed on various regions in the device, and parts with abnormal temperature can be found timely; the mounting board and the wiring board are arranged, and mounting and wiring of the detection device are convenient; the device is simple to operate and convenient touse, can effectively monitor the switching power supply, and reliability of the direct-current high-frequency switching power supply is greatly improved.

Description

technical field [0001] The invention relates to the field of switching power supplies, in particular to a DC high-frequency switching power supply fault detection and protection device. Background technique [0002] With the rapid development of power electronic technology, the requirements for power supply of various equipment are getting higher and higher. It is necessary to ensure the quality and reliability of power supply during the long-term operation of power electronic equipment. In DC high-frequency switching power supply, due to the power grid As well as the external environment, the DC high-frequency switching power supply may fail. Once the DC power supply fails, the entire DC high-frequency switching and rectifying module device may be damaged, causing serious economic losses. Compared with the patent application number 201220666994.7, the publication A DC high-frequency switching power supply fault detection and protection device is proposed, which is composed ...

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of power electronic technology, the requirements for power supply of various equipment are getting higher and higher. It is necessary to ensure the quality and reliability of power supply during the long-term operation of power electronic equipment. In DC high-frequency switching power supply, due to the power grid As well as the external environment, the DC high-frequency switching power supply may fail. Once the DC power supply fails, the entire DC high-frequency switching and rectifying module device may be damaged, causing serious economic losses. Compared with the patent application number 201220666994.7, the publication A DC high-frequency switching power supply fault detection and protection device is proposed, which is composed of an over-temperature detection unit, an over-voltage detection unit, an over-current detection unit, a fan fault detection unit, a DSP controller, and a fault signal transmission and processing unit. Using digital signal processor DSP control, it can collect the hot spot temperature of the power supply in real time, detect whether the power supply is overvoltage and overcurrent, and detect fan failure. Once the above failure occurs, the failure signal can be uploaded to the DSP controller for protection, and the failure The signal is sent to the fault signal sending processing unit

The above-mentioned patent is equipped with multiple detection units, the circuit connection is complicated, and the temperature change inside the equipment can only be roughly detected. Therefore, it is necessary to design a DC high-frequency switching power supply fault detection and protection device. The present invention can monitor various areas inside the equipment. Infrared scanning can detect areas and devices with abnormal temperature inside the equipment in time, and deal with them in time to prevent the devices from being burned out

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