Key awakening circuit, awakening method and meter reading terminal made from key awakening circuit and awakening method

A wake-up circuit and button technology, which is applied in the direction of adjusting electrical variables, control/regulation systems, instruments, etc., can solve the problems of high power consumption of the button wake-up circuit, inconvenient use of meter reading terminals, high cost, etc., and achieve simple and reliable circuits , the effect of low power consumption

Active Publication Date: 2017-05-31
WILLFAR INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Obviously, the existing button wake-up circuit consumes too much power, which makes the meter rea

Method used

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  • Key awakening circuit, awakening method and meter reading terminal made from key awakening circuit and awakening method
  • Key awakening circuit, awakening method and meter reading terminal made from key awakening circuit and awakening method
  • Key awakening circuit, awakening method and meter reading terminal made from key awakening circuit and awakening method

Examples

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Example Embodiment

[0030] Such as figure 2 Shown is the functional module diagram of the key-on wake-up circuit of the present invention: the key-on wake-up circuit provided by the present invention includes a controller and a key detection circuit, as well as a key drive circuit, a mains power failure drive circuit, a switch drive circuit and a battery Switch; the button detection circuit detects the button status and generates a drive signal to the button drive circuit; the mains power failure drive circuit detects the power failure of the mains, and generates a wake-up drive signal and a button drive signal, and the button drive signal is input to the button Drive circuit, the wake-up drive signal is input to the switch drive circuit; the button drive circuit outputs a control signal to the switch drive circuit according to the button drive signal input by the button detection circuit and the mains power failure drive circuit; the switch drive circuit outputs a control signal according to the b...

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PUM

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Abstract

The invention discloses a key awakening circuit. The key awakening circuit comprises a controller, a key detection circuit, a key driving circuit, a city-power powering-down driving circuit, a switch driving circuit and a battery switching switch. The key detection circuit detects the key state and sends the key state to the key driving circuit; the city-power powering-down driving circuit detects the city-power condition and inputs the city-power condition to the key driving circuit and the switch driving circuit; the key driving circuit outputs control signals to the switch driving circuit; the switch driving circuit drives the battery switching switch to work. The invention also provides an awakening method of the key awakening circuit, the awakening method includes the steps of detecting the city-power powering-down state; detecting the key state; detecting battery-switching-circuit control signals; completing circuit awakening. The invention also discloses a meter reading terminal with the key awakening circuit and the awakening method. The key awakening circuit is simple and reliable and extremely low in power dissipation.

Description

technical field [0001] The invention specifically relates to a button wake-up circuit, a wake-up method and a meter reading terminal made thereof. Background technique [0002] With the development of economy and technology and the improvement of people's living standards, electric energy has become the most important secondary energy in people's daily life. [0003] The meter reading terminal is one of the important components of the power system, and it undertakes the important role of reading the measurement data of the electric energy meter. Therefore, the meter reading terminal is required to be equipped with an uninterruptible power supply device. Existing meter reading terminals are required to be equipped with a backup battery. When there is no mains input, the terminal can be woken up by pressing a button to perform parameter setting, viewing and other operations. The technical requirement is that the backup battery should be on standby for a long time when the ter...

Claims

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Application Information

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IPC IPC(8): G05F1/625
CPCG05F1/625
Inventor 张奇亮肖林松汤可潘念龙
Owner WILLFAR INFORMATION TECH CO LTD
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