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POE power supply system and power supply method

A technology of power supply system and power supply terminal, applied in the direction of data switching current source, data exchange details, etc., can solve the problem of high cost, achieve the effect of low energy consumption, easy design and arrangement, and rapid response

Active Publication Date: 2016-04-06
ZHEJIANG GUNGX COMM EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, if the above POE power supply structure is applied to the home field, it will cost a lot of money (the reason is that the PSE chip and PD chip need to be licensed before they can be used)

Method used

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  • POE power supply system and power supply method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Refer to attached figure 1 As shown, the POE power supply system of the present invention includes a power supply terminal Vcc1 and at least one power receiving terminal, each power receiving terminal is connected to a power supply terminal with a control switch, and also includes a single-chip microcomputer U3, and each control switch is connected in parallel with a detection resistor , the detection resistor is led to the detection terminal corresponding to the single-chip microcomputer U3 through a voltage divider circuit, and the control terminal of each control switch is led to the control output terminal corresponding to the single-chip microcomputer U3. Whether the voltage fluctuates judges whether there is an electrical appliance connected, and then drives the control switch on / off. There is a capacitive element at the input end of the electrical power supply, which will charge and discharge the detection resistor when the voltage is applied, which will cause th...

Embodiment 2

[0029] refer to figure 2 As shown, this embodiment includes two power receiving terminals, that is, the power receiving terminal also includes a second power receiving terminal X2, the positive pole of the first power receiving terminal X2 is connected to the positive pole of the power supply terminal Vcc1 and connected to the working power supply VC12; the second power receiving terminal The negative pole of terminal X2 is divided into two paths, one path is connected to the negative pole of the power supply terminal Vcc1 and the working ground GND through the current limiting resistor and the second control switch U2, and the other path is connected to the working ground GND through the ninth resistor R9 as a detection resistor, and the ninth resistor R9 The end leading to the negative pole of the second power receiving terminal X2 is also connected in series with the first resistor R1 and then connected to the positive pole of the power supply terminal Vcc1. The first resis...

Embodiment 3

[0032] The present invention also provides a POE power supply method. The method is based on the following POE power supply system: including a power supply terminal Vcc1 and at least one power receiving terminal, each power receiving terminal and a power supply terminal are connected with a control switch, and a single chip microcomputer U3 is also included. A control switch is connected in parallel with a detection resistor, and the detection resistor is led to the detection terminal corresponding to the single-chip microcomputer U3 through a voltage divider circuit, and the control terminal of each control switch is led to the control output terminal corresponding to the single-chip microcomputer U3;

[0033] The method includes the following steps: (1) Power-on detection, confirming that the control switch is in the off state and the control output terminal of the single-chip microcomputer U1 is in the allowed output state; (2) The single-chip microcomputer U1 collects wheth...

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PUM

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Abstract

The invention provides a POE power supply system, comprising a power supply end and at least one path of receiving ends, a control switch is connected between each path of receiving ends and the power supply end, the POE power supply system further comprises a singlechip, each control switch is connected with a detection resistor in parallel, the detection resistor is introduced to a corresponding detection end of the singlechip by a voltage division circuit, a control end of each control switch is introduced to a corresponding control output end of the singlechip, each detection end of the singlechip collects whether the voltage on the detection resistor fluctuates in real time to judge whether an electric appliance is accessed, so as to drive the on / off of the control switch. The POE power supply system provided by the invention has the beneficially effects that, POE power supply can be realized by the singlechip, the control switch and few passive elements, after the power supply end is energized, the power supply end detects whether the receiving end generates voltage fluctuation to judge whether the electric appliance is accessed, the circuit structure is simple, the response is fast, and the on-off of the power supply of multiple paths of receiving ends can be realized quickly and accurately.

Description

technical field [0001] The present invention relates to the field of power supply, in particular to a POE power supply system. Background technique [0002] POE power supply refers to the use of Ethernet for power supply. It is usually used in the industrial field and is basically not used in the household field. The industrial field referred to here refers to relatively large places such as airports and railway stations. Due to the high wiring costs and Wiring is inconvenient, so POE is often used for power supply. The existing POE power supply structure includes a power supply device (also called the power supply end), a power receiving device (also called the power receiving end), the power supply device and the powered device are connected by several network cables, and the network cable A is the power supply voltage 48V, a handshake voltage is transmitted through the network cable B, and whether the network cable A is connected is determined by the switch. The existin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/10
CPCH04L12/10
Inventor 陈碎勇王正达
Owner ZHEJIANG GUNGX COMM EQUIP
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