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Power detection circuit

A technology for detecting circuits and power, which is applied in the direction of measuring electrical variables, measuring electrical power, and measuring electrical power through current/voltage, etc. It can solve the problems that it is inconvenient for users to check or correct the power supply, and the power supply power of electronic products cannot be detected. , to achieve the effect of power correction

Inactive Publication Date: 2015-03-25
郓城县恒通木业有限公司
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  • 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, making it inconvenient for users to check or correct the power of the electronic product

Method used

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Embodiment Construction

[0022] see figure 1 , in a first preferred embodiment of the present invention, a power detection circuit is used to detect the power consumption of an electronic device, which includes a power meter 20, an MCU (Micro Control Unit, micro control unit) 30, A memory 40 connected to the MCU 30 , a main function load 50 , a current detection module 60 , a power supply module 80 and a calibration circuit 90 connected to the MCU 30 . The power supply module 80 is connected to an AC (alternating current, alternating current) power source 10 , and can convert the AC voltage output by the AC power source 10 into a DC voltage for each load in the circuit. The power supply module 80 includes a bridge rectifier circuit, a PFC (Power Factor Correction, power factor correction) module and an AC-to-DC (AC to DC) conversion module. The memory 40 is used to store the data received by the MCU 30, which is convenient for invoking and querying historical data. In one embodiment, all components ...

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PUM

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Abstract

Disclosed is a power detection circuit, for detecting a power module of an electronic device. The input end of the power module is used for connection with an input power source. The power detection circuit comprises a current detection module connected with the output end of the power module, an MCU connected with the current detection module, and a correction circuit connected with the current detection module and the MCU. The correction circuit is used for correcting the output current of the power module, the current detection module is used for detecting the output current of the power module, and the MCU calculates the output power of the power module according to current signals detected by the current detection module and output voltage of the power module. The electronic device comprises a display module connected with the MCU, and the display module displays the output power of the power module. The power detection circuit can present power detection results in real time, and enables users to conveniently check or correct source power.

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 supply module of an electronic product, a micro control unit connected with the voltage jump detection module, and a micro control unit connected with the micro control unit The display 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, an...

Claims

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Application Information

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IPC IPC(8): G01R22/06G01R31/40
CPCG01R21/06G06F1/26G01R21/00
Inventor 林静忠
Owner 郓城县恒通木业有限公司
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