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A low power consumption power monitoring circuit

A technology of power monitoring and low power consumption, which is applied in the direction of measuring electricity, program control, computer control, etc., can solve problems such as damage to instruments and equipment, and achieve the effect of high safety, high reliability and low cost

Active Publication Date: 2018-11-02
HANGZHOU DIANZI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, once the circuit is short-circuited or overloaded, the equipment will be damaged, so it is necessary to develop a power monitoring circuit

Method used

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  • A low power consumption power monitoring circuit
  • A low power consumption power monitoring circuit
  • A low power consumption power monitoring circuit

Examples

Experimental program
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Embodiment Construction

[0019] Such as figure 1 As shown, a low power consumption power monitoring circuit includes a power supply circuit 1 , a main control circuit 2 , an alarm circuit 3 and a battery monitoring circuit 5 .

[0020] Such as figure 2 As shown: the power supply circuit includes a primary power supply chip U1, a secondary power conversion chip U2, a first tantalum capacitor C1, a fourth tantalum capacitor C4, a second ceramic capacitor C2, a third ceramic capacitor C3, and a second ceramic capacitor C3. Four ceramic capacitors C4, the first DC diode D1, the second Zener diode D2, the third LED D3, the first power inductor L1, the first resistor R1, the second resistor R2, the third resistor R3 and the first switch S1;

[0021] Pin 1 of the second interface P1 is directly grounded, pin 2 is connected to the anode of the first DC diode D1, the cathode of the first DC diode D1 is connected to one end of the first switch S1, and the other end of the first switch S1 is connected to a P...

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PUM

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Abstract

Disclosed in the invention is a low-power-consumption power monitoring circuit. Most of existing portable devices employ batteries for power supplying and high power consumption is caused by high-performance operation; and a conflict between the good performance and high power consumption becomes sharp because of the extremely poor battery technology and being lack of environmental awareness. The provided power monitoring circuit is composed of a battery monitoring circuit, a power supply circuit, an alarm circuit and a main control circuit. According to the invention, the provided circuit is mainly applied to a power supply system environment needing a power management system, especially to an environment with an external power supplying way using a battery for power supply. The circuit has advantages of low cost, simple structure, and high reliability and security and is capable of monitoring a power supply state of a battery, so that the system can work stably for long time.

Description

technical field [0001] The invention relates to a power monitoring circuit, in particular to a power monitoring circuit with low power consumption. Background technique [0002] Most of the current portable devices are powered by batteries. We know that high-performance computing is usually accompanied by high power consumption. However, the serious lag of battery technology and the increase of people's awareness of environmental protection make the problem between performance and power consumption more prominent. On the other hand, once the circuit is short-circuited or overloaded, the equipment will be damaged, so it is very necessary to develop a power monitoring circuit. Contents of the invention [0003] Aiming at the deficiencies of the prior art, the present invention proposes a low-power consumption power management system based on STM32F4 single-chip microcomputer, which can collect the voltage and current of the power supply, and has the function of current limit...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/36G05B19/042
CPCG01R31/3842G05B19/0428
Inventor 章雪挺陶维涛夏冰张明
Owner HANGZHOU DIANZI UNIV
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