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Power failure processing device and method

A power-off processing and circuit technology, applied in the fields of electronics and communications, can solve problems such as increased cost and tight structure space, and achieve the effects of less energy storage, small size, and structural space saving

Inactive Publication Date: 2014-01-08
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of increased cost and tight structural space caused by the use of capacitive energy storage in the current power-off processing of power receiving equipment, embodiments of the present invention provide a power-off processing device and method

Method used

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  • Power failure processing device and method

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Embodiment 1

[0023] Such as figure 1 As shown, the present embodiment 1 provides a power-off processing device, which includes: a power-off alarm detection circuit 1, a charging circuit 2, a timing power supply circuit 3, a button battery 4 and a combining circuit 5;

[0024] Wherein, one end of the power-off alarm detection circuit 1 is connected in series with the external power supply, and the other end of the power-off alarm detection circuit 1 is connected to the powered equipment for real-time monitoring of the voltage of the external power supply. When the voltage of the external power supply is lower than the preset threshold When the voltage is low, the power receiving equipment will generate a power failure alarm signal;

[0025] One end of the charging circuit 2 is connected to the external power supply, and the other end of the charging circuit 2 is connected to the positive pole of the button battery 4 for charging the button battery 4 by using the external power supply;

[0...

Embodiment 2

[0052] Based on the power-off processing device provided in the above-mentioned embodiment 1, such as Figure 4 As shown, this embodiment provides a power-off processing method, which includes the following steps:

[0053] 201. When the voltage of the external power supply is lower than the preset threshold voltage, the power failure alarm detection circuit 1 causes the powered device to generate a power failure alarm signal;

[0054] Before this step, the method also includes:

[0055] The power failure alarm detection circuit 1 monitors the voltage of the external power supply in real time. When the voltage of the external power supply is not lower than the preset threshold voltage, the combining circuit 5 receives the current input by the external power supply and supplies power to the powered equipment.

[0056] Further, the method further includes: the external power supply provides current input to the charging circuit 2 , and the charging circuit 2 charges the button b...

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Abstract

The invention discloses a power failure processing device and a power failure processing method and belongs to the field of electronics and communication. When an input voltage of powered equipment cannot meet a requirement for normal operation, a combining circuit switches power which is supplied to the powered equipment from an external power supply to a button battery which can store more energy, so that the powered equipment can accomplish necessary information sending operation when the external power supply is under-voltage, and the problem that an electrolytic capacitor stores less energy is solved. The button battery has a small size, so that the structural space of the powered equipment can be saved. Moreover, according to the invention, the power supply time of the button battery is controlled by a timing power supply circuit, and the electric energy of the button battery can be effectively utilized.

Description

technical field [0001] The invention relates to the fields of electronics and communication, in particular to a power-off processing device and method. Background technique [0002] xDSL is the general term for various types of DSL (Digital Subscribe Line, Digital Subscriber Line), including ADSL (Asymmetric Digital Subscriber Line, Asymmetric Digital Subscriber Line), VDSL (Very-high-data-rate Digital Subscriber Line, ultra-high-speed digital subscriber line line) and G.SHDSL (Single-pair High-speed Digital Subscriber Line, single-pair high-speed digital subscriber line), etc. xDSL technology uses existing copper wire resources (such as telephone lines) to provide end customers with high-speed and low-cost network access into the service. xPON is the general term for various types of PON (Passive Optical Network, Passive Optical Network) technologies, including GPON (Gigabit-Capable Passive Optical Network, Gigabit Passive Optical Network), EPON (Ethernet Passive Optical N...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J9/04
Inventor 宋奎超许进刘冠宇
Owner HUAWEI TECH CO LTD
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