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Implementation device and method for multi-voltage monitoring and protection

A technology for protecting circuits and implementation methods, applied in emergency protection circuit devices, circuit devices, and overvoltage-responsive protection, etc., can solve problems such as damage to electronic devices, and achieve the effects of saving resources and improving monitoring capabilities

Inactive Publication Date: 2008-05-28
STATE GRID TIANJIN ELECTRIC POWER
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the defects and deficiencies existing in the prior art, the present invention provides a device and method for implementing a multi-voltage monitoring and protection circuit, which solves the problems existing in the existing circuit due to the power-on / off of the power supply that may cause damage to the electronic devices on the circuit board. damage problem

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  • Implementation device and method for multi-voltage monitoring and protection
  • Implementation device and method for multi-voltage monitoring and protection
  • Implementation device and method for multi-voltage monitoring and protection

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Embodiment Construction

[0031] Below in conjunction with accompanying drawing, the present invention will be described in further detail:

[0032] The implementation device of single-board multi-voltage monitoring and protection circuit of the present invention is composed of the following parts: a primary power supply module, a secondary power supply module with power output enable, a reference voltage generation circuit, a voltage comparison module, power supply monitoring and protection control logic module.

[0033] Devices on the circuit board generally use multiple power supply methods. First, the primary power supply module is used to convert the 48V power supply of civil electricity or the computer room into a lower DC power supply that can be used by the board, and then the low-voltage power conversion device (secondary power supply module) is used to generate A variety of high-precision power supplies required by integrated circuits.

[0034] The power-on and power-off sequence of the devi...

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Abstract

The invention discloses a realization device and a method for monitoring voltage and protecting circuits. The prior circuit has damage problems that the circuit can bring in damage to electronic devices on a circuit board because power is switched on or off. For solving the problems, the realization method for monitoring the voltage and protecting the circuits of invention comprises two steps: firstly, reference voltage is generated for carrying out comparison with every electric device on the circuit board; secondly, when every electronic device on the circuit board is operated normally and one or more voltage of the power supply is lower than the reference voltage, the invention alarms, simultaneously and orderly switches off the power supply of every electronic device on the circuit board, and then orderly switches on for every electronic device on the circuit board. If order power on or off is defaulted, the invention alarms. Compared with the prior art, the invention adopts less circuits to realize the functions of voltage monitoring, circuit controlling and protecting with the requirements of power on or off. The invention saves resources and enhances the monitoring ability for a veneer power supply.

Description

technical field [0001] The invention relates to a device and method for realizing multi-voltage monitoring and protection on a circuit, and mainly relates to a device and method for realizing multi-voltage detection, control and protection on a circuit board with power-on sequence requirements on electronic equipment. Background technique [0002] With the development of current electronic technology, the function and structure of proprietary electronic devices and integrated circuits are becoming more and more complex, and higher requirements are put forward for the monitoring and protection of power supply. Otherwise, the internal configuration of the device will be affected and the device will not perform normally. Inherent functions and circuits do not work properly. In addition, due to physical characteristics and circuit design reasons on the circuit board, the startup and shutdown of each device is often sequential. If the order is disordered, it will affect the use o...

Claims

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Application Information

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IPC IPC(8): H02H3/20H02H3/00
Inventor 杨祖发徐宏毅
Owner STATE GRID TIANJIN ELECTRIC POWER
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