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Power detection circuit

A technology of power detection and voltage detection, which is applied in power supply testing, data processing power supply, measuring current/voltage, etc., can solve the problems of failure to detect the power of electronic products, the inability to know the power consumption of electronic products, changes, etc.

Inactive Publication Date: 2015-03-18
郓城县安迪玻璃有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned power detection circuit only detects the external power supply of the electronic product, but fails to detect the power of the electronic product. change without implementation

Method used

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Embodiment Construction

[0020] see figure 1 , In a preferred embodiment of the present invention, a power detection circuit includes a power module 10, a first voltage detection module 20, a second voltage detection module 30, a display screen 40, an MCU (Micro Control Unit, micro control unit) 50, a current detection module 60. The power module 10 can convert the voltage of the AC power supply 70 into a DC voltage to supply power to an electronic load, and the electronic load can be an electronic device such as a liquid crystal panel, a display, and a television.

[0021] The first voltage detection module 20 is connected to the AC power input terminal of the power module 10, and is used to detect whether the AC voltage connected to the power module 10 has abnormal conditions such as mutation, flashover, and instability. . The second voltage detection module 30 is connected to the voltage output terminal of the power module 10 for detecting the output voltage of the power module 10 . The current ...

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Abstract

A power supply detecting circuit includes a first voltage detecting module configured to detect an input voltage of a power supply module; a micro control unit (MCU) connected to the first voltage detecting module; a display module connected to the MCU; a second voltage detecting module configured to detect an output voltage of the power supply module; and a current detecting module configured to detect an output current of the power supply module. The MCU is capable of comparing the detected input voltage, the detected output voltage, and the detected output current of the power supply module with corresponding predetermined parameters and calculating an output power of the power supply module. The display module is capable of displaying the detected input voltage, the detected output voltage, the detected output current, and the output power of the power supply module.

Description

technical field [0001] The invention relates to a power detection circuit. Background technique [0002] When the user is using the electronic product, if the power grid is in an unstable state, the external power input to the electronic product may have overvoltage, which may easily cause damage to the components in the electronic product. Therefore, it is necessary to use a power detection circuit to detect whether there is a sudden change or flashover in the external power supply of the electronic product. A traditional power detection circuit includes a voltage jump detection module connected with the power module of an electronic product, a micro control unit connected with the voltage jump detection module and a display connected with the micro control unit screen, the voltage jump detection module is used to detect the AC voltage connected to the power supply module and generate a detection signal to output to the micro control unit, and the micro control unit judges...

Claims

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Application Information

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IPC IPC(8): G01R19/00G01R21/06
CPCG01R21/06G06F1/305G01R31/40G05F1/571G05F1/573G06F1/28H02M1/32H02M7/217H02M7/219
Inventor 林静忠
Owner 郓城县安迪玻璃有限公司