KR101872666B1 - Integrated switching power supply system based on Power over Ethernet device monitoring, and method thereof - Google Patents

Abstract

The present invention relates to an integrated switching power providing system based on PoE device monitoring, and a method thereof. According to an integrated switching power providing system based on PoE device monitoring which performs an integrated switching power providing method based on PoE device monitoring, each PoE device (1) performs data transmission and power supply through a PoE port, and a PoE switch (100) comprises: a PoE device test module (110); a PD state checking module (120); and a PoE device reset module (130). The operation monitoring for a PoE device operating on the basis of a PoE technology can be performed.

Description

[0001] The present invention relates to an integrated switching power supply system based on PoE device monitoring,

The present invention relates to a PoE device monitoring based integrated switching power providing system and a method thereof, and more particularly, to a PoE device monitoring and fault detection method using PoE (Power over Ethernet) And more particularly to a PoE device monitoring based integrated switching power providing system and method thereof.

With the development of Internet technology, broadband internet is spreading, and L2 switch is installed in the terminal box through Giga switch or L3 switch connected to the external internet network, so that multi-access is provided to each home network using the L2 switch have.

Here, the L2 switch is a switch operating as a network interface in the Layer 2 data link layer of the OSI layer, and the L3 switch is a router switch performing the switching function in the network layer as the Internet layer. However, PoE technology that can supply power with data at the same time is commonly applied in case that the L2 switch is installed in a place without a separate power supply means. This PoE technology is based on the fact that the Power Sourcing Equipment (PSE) such as a PoE injector and the L2 switch or the Powered Device (PD) are connected via a UTP cable so that the PSE can transmit user data And a power supply (for example, DC 48V) together with a control signal to a PD through a UTP cable to transmit data and power simultaneously.

In addition to the operation monitoring of PoE devices that operate based on this PoE technology, there is a need to develop a technology for recovery in the event of abnormalities in hardware and software through monitoring.

Korean Patent Application No. 10-2016-7015715 entitled " SYSTEM AND METHOD FOR SUPPLYING UNINTERRUPTIBLE POWER TO A POE DEVICE "

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to provide a PoE monitoring apparatus and a PoE device monitoring / monitoring system for monitoring a fault of a PoE device using PoE (Power over Ethernet) A switching power supply system and a method thereof.

In addition, the present invention is not limited to the operation monitoring for PoE devices operating on the basis of PoE technology, but also the PoE device monitoring based integrated switching power for efficiently recovering when abnormality in hardware and software occurs due to power supply / Providing system and method therefor.

However, the objects of the present invention are not limited to the above-mentioned objects, and other objects not mentioned can be clearly understood by those skilled in the art from the following description.

In order to achieve the above object, a PoE device monitoring based integrated switching power providing system according to an embodiment of the present invention includes a plurality of PoE devices A first step of selecting a PoE device 1 for testing among PoE devices 1 and stopping power transmission using a PoE port connected to a PoE device other than the selected PoE device 1; A second step of the PoE switch 100 analyzing a fault state of the selected PoE device 1; And determines whether the PoE switch 100 is in a fault state. If the selected PoE device 1 is not in the fault state, the next test cycle is performed again to analyze the fault state at the time of arrival, The fault condition analysis is again performed through selection for another PoE device 1 when a test cycle for testing for another PoE device 1 arrives before the next test cycle arrives, The power consumption amount of the selected PoE device 1 measured by the power amount measurement module 1d of the PoE device 1 selected in the PoE device 1 is compared with the first PoE power supply measured by the power amount measurement module 1d of the selected PoE device 1 A third step of performing comparative analysis with the self-supplied PoE supply amount received from the module 1a; And a control unit.

At this time, in the third step, the amount of the PoE supplied and supplied from the first PoE power supply module 1a is controlled by the power supplied through the PoE switch 100 and the first PoE Ethernet cable 2a connected to the selected PoE device 1 Of the present invention.

A PoE device monitoring based integrated switching power providing system and method thereof according to an embodiment of the present invention can prevent faults in PoE devices using Power over Ethernet (PoE) Provides a coping effect.

In addition, the PoE device monitoring based integrated switching power providing system and method thereof according to another embodiment of the present invention can be applied not only to the operation monitoring of PoE devices operating based on PoE technology, It is possible to efficiently perform restoration in the event of a power supply disruption.

1 is a diagram illustrating a PoE device monitoring based integrated switching power providing system according to an embodiment of the present invention.
2 is a flowchart illustrating a sensing and power switching concept performed in a PoE device monitoring based integrated switching power providing system according to an embodiment of the present invention
3 is a diagram illustrating a concept of state transition for the PD status check module 120 in the PoE switch 100 of the integrated switching power providing system based on the PoE device monitoring according to the embodiment of the present invention.
FIG. 4 is a block diagram illustrating a PoE device testing module 110 and a PoE device testing module 120 according to an exemplary embodiment of the present invention. Fig.
5 is a view for explaining a PoE device control process performed by the PoE device reset module 130 in the PoE switch 100 of the integrated switching power providing system based on the PoE device monitoring according to the embodiment of the present invention to be.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a detailed description of preferred embodiments of the present invention will be given with reference to the accompanying drawings. In the following description of the present invention, detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

In the present specification, when any one element 'transmits' data or signals to another element, the element can transmit the data or signal directly to the other element, and through at least one other element Data or signal can be transmitted to another component.

1 is a diagram illustrating a PoE device monitoring based integrated switching power providing system according to an embodiment of the present invention. Referring to FIG. 1, a PoE device monitoring based integrated switching power providing system includes a plurality of PoE device 1 sets, a first PoE Ethernet cable 2a, a second PoE Ethernet cable 2b, and a PoE switch 100 can do.

Here, each PoE device 1 may include a first PoE power supply module 1a, a second PoE power supply module 1b, a general power supply module 1c, and a power consumption measurement module 1d.

The PoE switch 100 may include a PoE device test module 110, a PD status check module 120, a PoE device reset module 130, a power selection and provision module 140, and a switching board 150 .

FIG. 2 is a flowchart illustrating a sensing and power switching concept performed in a PoE device monitoring based integrated switching power providing system according to an embodiment of the present invention. Referring to FIG. Hereinafter, an integrated switching power providing system based on PoE device monitoring will be described with reference to FIG. 2, focusing on the components shown in FIG.

The PoE switch 100 selects the PoE device 1 for testing among the plurality of PoE devices 1 constituting the PoE network through the first PoE Ethernet cable 2a for each PoE device 1, The power transmission using the PoE port connected to the PoE device other than the selected PoE device 1 is interrupted by the board 150 (S11).

After step S11, the PoE switch 100 analyzes the fault state of the PoE device 1 selected in step S11 (S12). Here, the PoE switch 100 can analyze whether the PoE state is in the alarm state of FIGS. 3 and 5 when analyzing the fault state.

After the step S12, the PoE switch 100 determines whether or not the PoE switch 100 is in the fault state (S13). If the PoE switch 100 is not in the fault state, the PoE switch 100 returns to the step S11, When the cycle comes again from the step S11 to the step S12 or when the test cycle for the test for the other PoE device 1 is reached for the selected PoE device 1 before the next test cycle arrives, (S11) to step (S12) again through selection for the first device (1).

On the other hand, conversely, the PoE switch 100 determines whether or not the PoE switch 100 is in the fault state (S13). If the PoE switch 100 is in the fault state, the PoE switch 100 selected by the PoE device 1d 1) with the own PoE supply amount received from the first PoE power supply module 1a measured by the power amount measurement module 1d of the selected PoE device 1 (S14). Here, the amount of the self-PoE supplied from the first PoE power supply module 1a is set to a quantitative value of the power provided using the PoE switch 100 and the first PoE Ethernet cable 2a connected to the selected PoE device 1 Preferably.

After step S14, the PoE switch 100 determines whether the result of the comparison analysis of step S14 is "the amount of power consumption> the amount of self-PoE supplied" (S15) (PoE) device using the self-PoE power supplied through the first PoE power supply module (1a) by analyzing that it is not hardware or software fault due to insufficient power supply when the power consumption and the self-PoE supply amount are equal 1 in step S16a. In step S16a, power source re-powering in the fault state is performed through power re-powering through PoE after PoE down for a PoE port supplying power in the PoE manner .

On the other hand, conversely, if the PoE switch 100 determines in step S14 that the amount of power consumption is greater than the amount of PoE supplied in step S15, The PoE device 1 which is adjacent to the selected PoE device 1 in the same manner as the selected PoE device 1 with respect to the power consumption amount of the PoE device 1 adjacent to the selected PoE device 1 is analyzed by hardware or software fault caused by the power supply shortage, And extracts at least one neighboring PoE device 1 having a residual power amount (S16). Here, the neighboring PoE device 1 corresponds to the PoE device 1 selected by the P2P method and connected to the second PoE Ethernet cable 2b.

In another embodiment of the present invention, in step S16a, the PoE switch 100 can set the PoE switch 100 corresponding to the PoE switch 100 as a neighboring device to the selected PoE device 1, It is possible to extract the remaining power amount itself by analyzing the relationship with the remaining power amount in the same manner as the selected PoE device 1 described above.

After step S16, the PoE switch 100 determines whether the amount of power consumed by the selected PoE device 1 is equal to the sum of the PoE supply amount of the selected PoE device 1 and the remaining amount of power of the at least one neighbor PoE device 1 (S17).

As a result of the analysis in step S17, the PoE switch 100 determines that the amount of power consumption of the selected PoE device 1 is larger than the amount of power consumption of the selected PoE device 1 and at least one neighboring PoE device 1, Of the selected PoE device 1 is larger than the quantitative value corresponding to the sum of the remaining power amount of the PoE device 1 and the sum of the remaining power amount of the PoE device 1 ' Power is supplied to the selected PoE device 1 through the general power supply module 1c by transmitting the power supply control command, and the power supply is re-applied using the supplied power (S16b).

The power consumption amount of the selected PoE device 1 is calculated as the sum of the power supply amount of the selected PoE device 1 and the sum of the remaining power amount of the at least one neighboring PoE device 1 The PoE switch 100 transmits the remaining amount of power of the at least one neighboring PoE device 1 to at least one neighboring PoE device 1 on the selected PoE device 1 through a different PoE port 1 Through the second PoE Ethernet cable (2b), and controls the selected PoE device (1) to reapply power using the received power (S18).

1, in the PoE device monitoring based integrated switching power providing system, the PoE device 1 is a CPU-based device and receives and responds to an Internet Control Message Protocol Message (hereinafter, referred to as ICMP message) If the device is an ICMP request, it processes the ICMP response. For example, a general IP camera in the PoE device 1 is all based on a CPU, and can process an ICMP message normally.

The ICMP is an Internet Control Message Protocol (ICMP), which is a combination of the Internet Protocol (IP) in the TCP / IP-based Internet communication service and control messages for processing errors and changing the transmission path Protocol for connectionless transmission, which is defined in the network layer of the OSI basic reference model.

Accordingly, when the PoE device 1 is in a fault state on the hardware (H / W) or the software (S / W), the PoE device 1 is reset H / W reset), and it is necessary to detect the fault status.

At this time, in the present invention, whether or not the PoE device 1 is in a fault state is confirmed in response to an ICMP message, and power re-powering in a fault state is performed by PoE Down And then re-power through the PoE Up.

The PD status checking module 120 of the PoE switch 100 controls the transmission and reception of ICMP messages to and from the PoE device 1 using the PoE device testing module 110, By providing the PoE device reset module 130 with the status transition information related to the transmission and reception of ICMP messages between the test modules 110 and the PoE device reset module 130, I want to perform power re-power through PoE Up after PoE Down.

Here, in one embodiment of the present invention, each PoE device 1 has a relationship with the PoE switch 200 and a separate PoE port between different PoE devices, thereby enabling data transmission and power supply through the PoE port have.

PD status checking module 120 may periodically monitor a PoE device 1 (e.g., a PoE camera) connected to a PoE port by using a ping command, and an embodiment of the ping command may include an ICMP message And the PoE device 1 may not respond to the ICMP message for a predetermined time according to the transmission of the ICMP message to the PoE device 1 using the PoE device test module 110, It is possible to control the PoE of the PoE port set in the PoE device 1 to go up and down.

At this time, the PoE device reset module 130 transmits a reset control command to the PoE device 1 using the data line of the first PoE Ethernet cable 2a shown in FIG. 2, And supplies the reset control command to the PoE device reset module 130 together with the received power supply information.

In this case, since the PD status checking module 120 can not respond to booting according to the hardware reset (H / W reset) of the PoE device 1, an initial waiting time is required, A delay may occur irregularly in the response time, so that the process is re-confirmed by a preset number of times.

In addition, the PD status checking module 120 needs to have different monitoring periods and number of reconfirmations for each PoE device 1, and it is also possible to set different waiting times from PoE down to Up.

3 is a diagram illustrating a concept of state transition for the PD status check module 120 in the PoE switch 100 of the integrated switching power providing system based on the PoE device monitoring according to the embodiment of the present invention. Referring to FIG. 3, the PD status checking module 120 may be an IDLE state, a standby state, a wait response state, a timeout state, and an alarm state according to transmission / reception of an ICMP message on the PoE device 1.

Here, the transition from the IDLE state to the standby state may be performed in the case where the initial wait time elapses after the PD Alive mode is enabled for the first PoE port connected to the PoE switch 100 for the PoE device 1.

The initial waiting time is preferably set individually according to the type of each PoE device 1.

On the other hand, the transition from the standby state to the wait response state can be performed in the case of the ICMP request message transmission after the ICMP message transmission period for the PoE device 1, and the transition from the Wait Response state to the Standby state is performed by the ICMP And may be performed in the case of receiving a response message.

In addition, the transition from the Wait Response state to the Timeout state can be performed in the case of an ICMP response message not being received for a predetermined time for the PoE device 1. [

The transition from the timeout state to the alarm state can be performed when the PoE device 1 does not continuously receive a response for a predetermined number of times.

Also, the transition from the timeout state to the standby state can be performed even when the response is not received within a range not exceeding the preset number of times from the PoE device 1. [

The transition from one of the Standby state, the Wait Response state, and the Timeout state to the IDLE state can be performed when the PD Alive mode for the first PoE port set for the PoE device 1 is Disable.

FIG. 4 is a block diagram illustrating a PoE device testing module 110 and a PoE device testing module 120 according to an exemplary embodiment of the present invention. Fig. 5 is a view for explaining a PoE device control process performed by the PoE device reset module 130 in the PoE switch 100 of the integrated switching power providing system based on the PoE device monitoring according to the embodiment of the present invention to be.

First, components of the PoE device test module 110, the PD status check module 120, and the PoE device reset module 130 will be described with reference to FIGS. 4 and 5. FIG.

The PoE device test module 110 may include a message callback processor 111 and a message transmission / reception means 112. The message transmission / reception means 112 includes a message generation / transmission means 112a and a message And receiving means 112b.

The PD status confirmation module 120 may include a callback function registration unit 121, a callback function provision unit 122, an ICMP message transmission request / reception check unit 123 and a PD Alive status provision unit 124.

The PoE device reset module 130 includes a PoE sub module 131. The PoE sub module 131 can be divided into the PoE control unit 131a and the PoE scheduling unit 131b.

The process of interlocking with the PoE device test module 110 by the PD state checking module 120 of FIG. 4 will be described with reference to FIG. 4. The callback function registering unit 121 of the PD state checking module 120, Registers an "ICMP message callback function" on the PD status check module 120 to be received when the ICMP message is received by the message callback processor 111 of the PoE device test module 110. [

Here, the "ICMP message callback function" is a function to be called on the PD status checking module 120 upon receipt of an ICMP message, and is registered in the PoE device testing module 110 in the PD status checking module 120, ) Is registered to perform a call request upon receiving an ICMP message.

The ICMP message transmission request / reception checking unit 123 of the PD status checking module 120 requests the message generating / transmitting unit 112a of the PoE device testing module 110 to transmit the ICMP message to the PoE device 1. Accordingly, the message generating / transmitting means 112a transmits the ICMP message to the PoE device 1. [

The PoE device 1 receives the ICMP message from the message receiving means 112b by transmitting the ICMP response message to the message receiving means 112b of the PoE device test module 110. [

The message receiving unit 112b of the PoE device test module 110 requests the message callback processing unit 110 to perform callback processing by receiving an ICMP message. Accordingly, the message callback processing unit 110 requests the callback function providing unit 122 of the PD status checking module 120 to call the "ICMP message callback function" by receiving the ICMP message.

5, a PoE control process by the PoE device reset module 130 will be described with reference to FIG. 4, in which the PoE device 1 and the PoE device testing module 110 Receiving unit 112 of the PoE device testing module 110 transmits and receives ICMP messages to and from the ICMP message transmission request / reception checking unit 123 of the PD status checking module 120, Provides the response processing history.

3, the ICMP message transmission request / reception check unit 123 of the PD status checking module 120 receives the ICMP message from the PoE device test module 110 and the PoE device 1, To the PD Alive state providing means 124, a transition state according to the "ICMP message callback function" from the state? Wait response state? Timeout state? To the alarm state.

The PoE scheduling means 131b of the PoE device reset module 130 checks the PD Alive Alarm state corresponding to the state transition to the alarm state through the access according to the preset scheduling to the PD Alive state providing means 124. [

The PoE control unit 131a of the PoE device reset module 130 receives the power selection providing module 140 through the request for the PoE device reset module 130 and the power selection providing module 140 140 and the power supply and power supply, and a request to include analysis information in the reset control command by the PoE device reset module 130, whether external or self The PoE device 1 can be hardware reset (H / W reset) through power supply re-powering, and it is preferable that power is re-applied to the port supplied in the PoE mode through PoE after power down .

The present invention can also be embodied as computer-readable codes on a computer-readable recording medium. A computer-readable recording medium includes all kinds of recording apparatuses in which data that can be read by a computer system is stored.

Examples of the computer-readable recording medium include a ROM, a RAM, a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device and the like, and also implemented in the form of a carrier wave (for example, transmission over the Internet) .

The computer readable recording medium may also be distributed over a networked computer system so that computer readable code can be stored and executed in a distributed manner. And functional programs, codes, and code segments for implementing the present invention can be easily inferred by programmers skilled in the art to which the present invention pertains.

As described above, preferred embodiments of the present invention have been disclosed in the present specification and drawings, and although specific terms have been used, they have been used only in a general sense to easily describe the technical contents of the present invention and to facilitate understanding of the invention , And are not intended to limit the scope of the present invention. It is to be understood by those skilled in the art that other modifications based on the technical idea of the present invention are possible in addition to the embodiments disclosed herein.

1: PoE device
1a: first PoE power supply module
1b: Second PoE power supply module
1c: General power supply module
1d: Power consumption measurement module
2a: First PoE Ethernet cable
2b: 2nd Ethernet cable
100: PoE switch
110: PoE Device Test Module
111: Message Callback Processor
112: message transmission / reception means
112a: message generation / transmission means
112b: message receiving means
120: PD status check module
121: Callback function registration means
122: means of providing a callback function
123: ICMP message transmission request / reception check means
124: PD Alive state providing means
130: Ext device module
131: PoE sub-module
131a: PoE control means
131b: PoE scheduling means
140: power selection providing module
150: Switching board

Claims (2)

The PoE switch 100 selects the PoE device 1 for testing among the plurality of PoE devices 1 constituting the PoE network through the first PoE Ethernet cable 2a for each PoE device 1 step;
The PoE switch 100 interrupts power transmission using the PoE port connected to the PoE device 1 other than the selected PoE device 1 and analyzes the fault status of the selected PoE device 1 Step 2;
If the PoE switch 100 is not in the faulted state, the next test cycle for the selected PoE device 1 may again perform the fault state analysis on arrival, or the selected PoE device 1 may be analyzed again by another PoE device 1 When the test cycle for the test of the PoE device 1 is completed, the fault state analysis is again performed by selecting the other PoE device 1, The amount of power consumption of the selected PoE device 1 measured by the module 1d is the same as the amount of power supplied from the first PoE power supply module 1a measured by the power amount measurement module 1d of the selected PoE device 1 (Its own PoE supply amount received from the first PoE power supply module 1a is the power supplied using the first PoE Ethernet cable 2a connected to the PoE switch 100 and the selected PoE device 1 A third step of performing a comparative analysis with the quantitative value of the second step;
The PoE switch 100 analyzes that the PoE switch 100 is not a hardware or software fault due to a shortage of power supply when the amount of power supplied to the PoE switch 100 is larger than the amount of power consumed by the PoE switch 100, When the power consumption is larger than the self-PoE power supplied to the selected PoE device 1, the PoE device 1 controls power to be supplied to the selected PoE device 1 through the self- The power consumption of the PoE device 1 (the device connected to the PoE device 1 and the second PoE Ethernet cable 2b selected by the P2P method) adjacent to the selected PoE device 1 by analyzing by hardware or software fault due to shortage And the residual power amount of the PoE device 1 adjacent to the selected PoE device 1 as the selected PoE device 1, Extracts at least one neighboring PoE device 1 having a power amount and calculates the amount of power consumption of the selected PoE device 1 based on the amount of power supplied to the selected PoE device 1 and the remaining power amount of at least one neighboring PoE device 1 Quot; total " And
The PoE switch 100 determines that the amount of power consumption of the selected PoE device 1 is less than the sum of the amount of power supplied to the selected PoE device 1 and the sum of the remaining power amount of the at least one neighboring PoE device 1, , The PoE device 1 is connected to the general power supply module 1c to supply a general power supply control command through a power cable supplying general power corresponding to the external power The power of the selected PoE device 1 is transmitted to the selected PoE device 1 through the general power supply module 1c and the power is reused by using the supplied power. Consumed power amount is not greater than the sum of the 'amount of supplied PoE of the selected PoE device 1' and the sum of the 'remaining amount of power of the at least one neighboring PoE device 1' Through the second PoE Ethernet cable 2b connected to the at least one neighbor PoE device 1 and the different PoE ports on the selected PoE device 1, the remaining power amount of the one or more neighbor PoE devices 1 is received and supplied A fifth step of controlling the power source to be re-applied to the selected PoE device 1 using the power source; / RTI >
In the fourth step, the PoE switch 100 sets itself as a neighboring device to the selected PoE device 1 and analyzes the relationship between the PoE device 1 and the remaining power amount in the same manner as the PoE device 1 selected for its own power consumption amount Wherein the PoE device is a PoE device.
The PoE device monitoring based integrated switching power providing system performing the PoE device monitoring based integrated switching power providing method of claim 1,
Each PoE device (1)
It is based on a CPU and is an equipment that receives / responds to Internet Control Message Protocol (ICMP) messages. It processes ICMP responses to ICMP requests. It also processes faults on hardware (H / W) or software (S / W) (H / W Reset) of the PoE device 1 through an external power source re-supply, and the relationship with the PoE switch 200 and between the PoE devices connected to each other, And performs data transmission and power supply through the PoE port,
The PoE switch 100,
A PoE device test module 110;
When a fault is detected, it is acknowledged in response to an ICMP message. Power re-powering in the Fault state is performed by power re-powering through PoE after PoE Down for a PoE port that supplies power by PoE method. The PoE device testing module 110 transmits the status transition information according to the ICMP message sending / receiving control to the PoE device 1 and the PoE device testing module 110 from the PoE device testing module 110 to the PoE device reset module 110. [ To the PoE device reset module 130. The PoE device reset module 130 performs PoE power-down through PoE power-down to PoE device 1, A PoE device 1 is periodically monitored using a ping command, an ICMP message is utilized as a ping command, and a PoE device using the PoE device testing module 110 When the PoE device 1 does not perform an ICMP message response for a preset time and the number of times that the PoE device 1 does not respond exceeds a predetermined number of times according to the transmission of the ICMP message to the PoE device 1, The PoE device 1 sets the initial wait time so as to prevent the PoE device from responding to booting according to the hardware reset (H / W reset) of the PoE device 1, The monitoring period and the number of times of reconfirmation can be set differently, and the waiting time until PoE Down and Up can be set differently. The IDLE state, Standby state, Wait Response state, Timeout state , The transition from the IDLE state to the Standby state is performed by checking the alarm state of the PoE switch 100 for the PoE switch 100 in the PD Alive mode Enabl The transition from the Standby state to the Wait Response state is performed when the ICMP message transmission period for the PoE device (1) has elapsed. The transition from the Wait Response state to the Standby state is performed in the case of receiving the ICMP response message and the transition from the Wait Response state to the Timeout state is performed in the case of the ICMP request message transmission for the PoE device 1 The transition from the timeout state to the alarm state is performed when a response is not continuously received from the PoE device 1 for a predetermined number of times, and the transition from the timeout state to the standby state Is performed when a response is not received within a range not exceeding a predetermined number of times from the PoE device 1, and the transition of the Standby state, Wait The PD state checking module 120 performing the transition from one of the Response state and the Timeout state to the IDLE state when the PD Alive mode is disabled for the first PoE port set for the PoE device 1; And
Transmits a reset control command to the PoE device 1 using the data line of the first PoE Ethernet cable 2a and analyzes the power supply information of the power selection providing module 140 and then transmits the PoE device reset module 130 A PoE device reset module 130 serving to provide a reset control command by the PoE device reset module 130; And a PoE device monitoring based integrated switching power providing system.

Images