KR102032898B1 - Method for remote power control using power over ethernet line and the apparatus thereof - Google Patents

Abstract

The present invention performs watchdog monitoring between a PSE (Power Sourcing Equipment) device that supplies power through a PoE line and a PD (Powered Device) device that receives power from the PSE device, based on the monitoring result. By using the PoE line to conveniently perform maintenance, including quickly restoring the system by controlling the power of the PSE or PD side device (including reset) that caused a fault such as system down or operation delay. It relates to a remote power control method and apparatus therefor.

Description

Remote power control method using PoE line and its device {METHOD FOR REMOTE POWER CONTROL USING POWER OVER ETHERNET LINE AND THE APPARATUS THEREOF}

The present invention relates to a remote power control method and apparatus using a Power over Ethernet (PoE) line, and more particularly, to a power source from a PSE (Power Sourcing Equipment) device and a power supply from the PSE device Performs watchdog monitoring between PD (Powered Device) devices receiving the power supply, and controls the power supply of the PSE device or PD device that has a defect such as system down or operation delay based on the monitoring result (including reset). The present invention relates to a remote power control method and apparatus for easily performing maintenance, including quickly restoring a corresponding system.

Recently, due to the development of Internet technology, high-speed Internet network is spreading in each house. Especially, in apartment houses such as apartments, large residential complexes, offices, buildings, etc., APs are used for controlling switches such as routers connected to external Internet networks. At least one access point is connected to provide multi-access of various communication devices provided in a home, an office, and the like.

That is, the installation of a network system composed of one router and at least one AP connected to the router is common in each home, office, etc., thereby providing a more convenient internet environment.

In this case, in order to install the AP in a place without a separate power supply means, a PoE technology that can simultaneously provide power with data is commonly applied.

The PoE technology connects a PSE, a device that supplies power, and a PD-side device, a device that receives power, with a UTP cable, and the PSE connects a power (for example, 48V DC power) to the UTP cable along with data and control signals. It is a technology that delivers to the PD side equipment.

As described above, in a network system in which PoE technology is applied, the use of other communication devices may be interrupted in the event of a failure of one of the communication devices interworked with each other. It is very important to ensure that it is possible.

To this end, a technology has been introduced that uses a computer network standard, called Wake-on-Lan (WOL), to send a network message to wake up or wake up from sleep mode.

However, in the conventional wake on LAN technology described above, the system boot (ie, reset) is possible only when the Phy Chip or Mac Chip is normally operated, and the WOL chip is broken because the WOL chip has a limitation that it must be operating normally. I had a problem where it was impossible to reset the communication device remotely.

Therefore, the present invention monitors whether the counterpart device is operating normally by receiving a ping from each of the PSE device and the PD device for stable operation of the PoE, and based on the monitoring result, the PSE device or the PD device is defective. If this occurs, the present invention proposes a method of quickly restoring the power of the PSE side device or PD side device.

Next, the prior art existing in the technical field of the present invention will be briefly described, and then the technical matters to be made differently from the prior art will be described.

First, Korean Patent No. 1431712 (2014.08.20.) Relates to a device and a method for notifying a setting state of a wake on LAN function, and a WOL setting checking unit for checking a setting state of a wake on LAN function of an information processing device. ; And a WOL setting display unit for informing the user of the information processing apparatus of the setting state at the end of the system of the information processing apparatus.

The prior art informs the user of the information processing apparatus in advance of a setting state of a wake on LAN (WOL) function that can be operated by remotely booting the system of the information processing apparatus, and enables the user to modify the setting state. It is easy to know whether the WOL function is enabled in the information processing device of the system and provides an effect that can be easily modified.

However, the present invention performs a watchdog function that monitors whether the counterpart device is operating normally by exchanging pings from the PSE device and the PD device, and if a defect occurs in the PSE device or the PD device. Since the technical configuration for resetting the power supply of the PSE side device or PD side device is presented, the simple WOL function configuration of the prior art or the user checks whether the WOL function is enabled in his or her information processing device and Compared with the technical configuration for modifying the setting state on the basis, it can be seen that the difference in technical characteristics is clear.

In addition, WO2011 / 136591 A2 (2011.11.03.) Relates to an indoor direct current power system and a method for communication of power lines thereof. The indoor wiring is configured as a direct current power system to improve power factor control efficiency for indoor electrical products and to control external control. When a signal is transmitted and received to an indoor electric device by a power line communication method, it is possible to improve the transmission effect of the control signal while preventing power loss.

The prior art proposes a method of hardware reset of a system according to the result after sending and receiving a message using a simple PWM communication modulation technique on a power line using a PLC communication technology.

However, according to the present invention, the PSE side device and the PD side device exchange pings with each other to see whether the counterpart equipment is operating normally, and based on the monitoring results, While the technical configuration for resetting the power is presented, the prior art proposes a technical configuration for resetting the load side in one direction at the power supply side that exchanges messages with the load side using PWM communication modulation technology. The difference is clear.

That is, the prior art suggests a configuration for providing a WOL function for remotely booting and operating an information processing device, and a configuration for resetting the load side in one direction from the power supply side using a PWM communication modulation technology. PSE based on the monitoring result between PSE and PD devices using watchdog function to monitor whether the other device is operating normally by sending and receiving pings from PSE and PD devices If a fault occurs in the side equipment or PD side equipment, the technical difference is obvious because there is no description on the configuration that supports the reset of the PSE side equipment or PD side equipment in the counterpart equipment.

The present invention was created to solve the above problems, and performs a watchdog function for monitoring whether the counterpart equipment is operating normally by receiving a ping between the PSE device and the PD device, and downing the system and delaying the operation. An object of the present invention is to provide a remote power control method using a PoE line and a device for resetting the power of a PSE side device or a PD side device having a defect such as the above to be quickly restored.

In addition, the present invention generates an IV (current, voltage) abnormal signal that is set in advance in the PD side device in the event of a failure in the PSE device and the PSE side device in the mutual monitoring process, Another object of the present invention is to provide a remote power control method and apparatus using a PoE line that detects an abnormal signal from the PSE device so as to perform self power reset.

In addition, the present invention in the process of mutual monitoring of the PSE side device and the PD side device, when a defect occurs in the PD side device by opening and closing the power supplied to the PD side device side from the PSE side device, Another object of the present invention is to provide a method and apparatus for controlling a remote power supply using a PoE line that can perform a reset.

The PSE device according to an embodiment of the present invention includes a PSE supplying power to a remote PD device via a PoE line, and a first watchdog monitoring unit for monitoring an operation of the remote PD device. The first watchdog monitoring unit may monitor the normal operation of the remote PD device via the PoE line and transmit a power reset signal to the remote PD device when an abnormality is detected.

At this time, the PSE device further comprises a power management unit for generating a power reset signal by opening and closing the power based on the signal pattern for the power reset of the remote PD side device.

In addition, the PSE side device according to an embodiment of the present invention, based on the IV abnormality detection unit for detecting the current, voltage abnormal signal generated in the remote PD side device via the PoE line and the reset based on the detected current, voltage abnormal signal And a first reset unit to perform the reset. When the detected current and voltage abnormal signal is a power reset signal forcibly generated by the PD-side device, the first reset unit performs a reset by itself.

At this time, if the detected current and voltage abnormal signal is an abnormal signal caused by an actual abnormal situation caused by disturbance including surge and noise, the PSE side device processes the response to an abnormal occurrence.

In addition, the PD side device according to an embodiment of the present invention, based on the PD received power from the remote PSE device via the PoE line and the power reset signal received from the remote PSE device via the PD And a second reset unit configured to perform the power reset signal, wherein the power reset signal is generated by opening and closing the power according to a signal pattern for power reset in the remote PSE device.

In addition, the PD side device according to an embodiment of the present invention includes a PD that is powered from a PSE side device of the remote via the PoE line and a second watchdog monitoring unit for monitoring the operation of the remote PSE side device; The second watchdog monitoring unit may monitor the normal operation of the remote PSE device through the PoE line and transmit a power reset signal to the remote PSE device when an abnormality is detected.

In this case, the PD side device further includes an IV abnormality generating unit for generating a power reset signal to the remote PSE side device, wherein the power reset signal is configured for power reset of the remote PSE side device. The current and voltage abnormality signals are forcibly generated on the PoE line.

In addition, the remote power control method using a PoE line according to an embodiment of the present invention, the power supply step of supplying power from the PSE side device to the remote PD side device via the PoE line, the remote from the PSE side device A monitoring step of monitoring whether the PD side device is normally operated, and when an abnormality is detected in the remote PD side device, the PSE side device generates a power reset signal and transmits it to the remote PD side device; And generating and transmitting a power reset signal.

The remote power control method may further include performing a reset operation in the remote PD device based on a power reset signal received from the PSE device via the PoE line.

The generating and transmitting of the power reset signal may include a system down or a predetermined threshold value at the PD device based on a watchdog monitoring result by the PSE device transmitting / receiving a ping signal with the remote PD device. If a delay occurs, generating a power reset signal by opening and closing a power source based on a signal pattern for power reset of the remote PD side device, and generating the power reset signal through the PoE line. It characterized in that it further comprises the step of transmitting.

The performing of the reset may include: checking, by the PD side device, a power reset signal transmitted from the PSE device through the PoE line, and a power reset signal previously set through the PoE line. Determining whether or not the pattern information is matched with the controller; and if the power reset signal received through the PoE line matches the preset pattern information for the power reset, the hardware is reset by the PD device. It characterized in that it further comprises the step of performing a reboot.

In addition, the remote power control method using a PoE line according to an embodiment of the present invention, the PSE side device that supplies power to the remote PD side device via the PoE line is generated in the remote PD side device through the PoE line An abnormal signal detecting step of detecting a current or voltage abnormal signal, and a reset performing step of performing a reset based on the detected current and voltage abnormal signal, wherein the resetting step comprises: In the case of a power reset signal forcibly generated by the PD side device, a reset is performed by itself.

The remote power control method may further include: a monitoring step of monitoring whether the remote PSE device is normally operated by a PD device receiving power from the PSE device via the PoE line and the monitoring result of the PSE device; When the abnormality is detected, the step of generating a power reset signal for generating a current, voltage abnormal signal for the power reset in the PD-side device.

In addition, if the current or voltage abnormal signal is detected on the PoE line in the PSE device, the reset operation step may determine whether the current or voltage abnormal signal is a power reset signal or an actual abnormal condition caused by disturbance including surge and noise. Determining whether the current or voltage abnormality signal detected by the determination result is a power reset signal, rebooting by performing a hardware reset by the PSE device, and detecting the current or voltage abnormality signal by the determination result. If the actual abnormal situation due to disturbance including noise, the PSE side device further comprises the step of processing the response to the occurrence of the occurrence on the PoE line.

In the generating of the power reset signal, when the PD side device generates an operation delay or a system delay from the PSE side device based on a watchdog monitoring result by transmitting and receiving a ping signal with the PSE device. And forcibly generating a current and voltage abnormal signal for power reset on the PoE line.

As described above, according to the remote power control method and apparatus using the PoE line of the present invention, the PSE side device and the PD side device is exchanged with each other to monitor whether the counterpart equipment is operating normally, and based on the monitoring result. By quickly resetting the power of the PSE or PD side device where the system fault has occurred, the remote power control command for the maintenance of the system can be easily transmitted, thereby increasing the convenience of the customer. In addition, the stable operation of the communication equipment has the effect of increasing the quality of the equipment and communication environment.

In addition, since the restoration of defects can be handled on its own based on the monitoring between the PSE side device and the PD side device, preventive service dispatch can be prevented in advance, thereby reducing the maintenance cost.

1 is a view schematically showing the configuration of a remote power control device using a PoE line according to an embodiment of the present invention.
2 is a conceptual diagram illustrating a remote power control process using a PoE line to which the present invention is applied.
3 is a view showing in detail the configuration of the PSE side device of FIG.
4 is a view showing the configuration of the PD side device of FIG. 1 in detail.
5 and 6 are flowcharts showing in detail the operation of the remote power control method using a PoE line according to an embodiment of the present invention.
7 is a flowchart illustrating an operation process of a remote power control method using a PoE line according to another embodiment of the present invention in detail.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the remote power control method and apparatus using the PoE line of the present invention. Like reference numerals in the drawings denote like elements. In addition, specific structural to functional descriptions of the embodiments of the present invention are only illustrated for the purpose of describing the embodiments according to the present invention, and unless otherwise defined, all terms used herein including technical or scientific terms These have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art, and are not construed in ideal or excessively formal meanings unless expressly defined herein. It is preferable not to.

1 is a view schematically showing the configuration of a remote power control apparatus using a PoE line according to an embodiment of the present invention, Figure 2 is a conceptual diagram illustrating a remote power control process using a PoE line to which the present invention is applied.

As shown in Figure 1 and 2, the remote power control device provided in the present invention is composed of a PSE side device 100 and a PD side device 200, the PD side device 200 for transmitting data It operates by receiving power (for example, DC 48V) from the PSE device 100 through a UTP cable. The power and data integrated in the UTP cable can then be transferred up to 100m in Category 5 / 5e specifications.

The PSE side device 100 is a PoE transmission side device for supplying power to the PD side device 200, and is configured of a router, a PoE switch, and the like.

The PD side device 200 is a PoE receiving side device receiving operation power from the PSE side device 100, and is composed of a wireless AP, an IP camera, an IP telephone, and the like.

In addition, the present invention performs a watchdog function for monitoring whether the counterpart equipment is operating normally in each of the PSE device 100 and the PD device 200, so that the PSE device 100 or the PD device ( If a defect occurs in the 200, it is possible to quickly restore the power of the PSE side device 100 or the PD side device 200. That is, the present invention is implemented to perform a watchdog function with a device located at a remote location instead of the existing self-watchdog function.

In this case, the watchdog function is a ping message request and a ping response between the PSE side device 100 and the PD side device 200, based on the measurement of the ping response arrival and processing speed according to the ping message request. The operation of the PSE side device 100 or the PD side device 200 may be checked whether or not an operation delay occurs outside the preset threshold value.

In the present invention, the watchdog monitoring is performed between the PSE side device 100 and the PD side device 200, and based on the remote reboot control of the PD side device 200 according to the watchdog monitoring result. Two embodiments of performing the reset in the PSE side device 100 or performing the reset in the PD side device 200 based on the remote reboot control of the PSE side device 100 are applied.

First, the embodiment of FIG. 2A confirms a defect such as a system down or an operation delay on the PSE side device 100 based on the watchdog function on the PD side device 200, and then moves to the PSE side device 100. This shows the remote power control process for performing a self-reset in the PSE side device (100).

In detail, the PD device 200 on the PoE receiving side requests a ping message every time a certain time arrives from the PSE device 100 on the PoE transmitting side, and receives the message from the PSE side device 100. The ping response may be used to determine whether a system down of the PSE side device 100 or an operation delay outside a preset threshold occurs.

As such, when the PSE side device 100 detects a system down state or an operation delay state that deviates from a preset threshold based on the watchdog monitoring result using the ping response of the PSE side device 100, the PD side device 200 is detected. Determining a remote reboot of the PSE side device 100, and forcibly generates an IV abnormal signal for remote reboot preset on the PoE line (that is, UTP cable) connected to the PSE side device 100 is abnormal Make the current or voltage state.

Then, the PSE side device 100 detects whether an abnormal current or voltage state is detected on the UTP cable connected to the PD side device 200, and if the IV abnormal signal having an abnormal current or voltage state is detected, the IV abnormal signal is detected. Check whether it is a power reset signal or an actual abnormal signal caused by disturbance such as surge or noise.

If the IV abnormal signal is confirmed as an actual abnormal signal due to a surge or noise, the PSE side device 100 responds to the IV abnormal signal.

In addition, when the IV abnormal signal is confirmed as the IV abnormal signal, the power reset signal, the PSE side device 100 performs a hardware reset itself to reboot the CPU.

That is, in the embodiment of FIG. 2A, when the PD side device 200 causes the PoE line to be in an abnormal current or voltage state, the PSE side device 100 detects this and then hardware resets itself to reboot the CPU. By returning to normal operation state.

On the other hand, the embodiment of Figure 2b is based on the watchdog function on the PSE side device 100 side checks the defect such as system down or operation delay of the PD side device 200 side to the corresponding PD side device 200 The remote power control process of performing a reset in the corresponding PD side device 200 by opening and closing the power supply is shown.

In detail, the PSE device 100 requests a ping message every time a certain time arrives from the PD device 200 and uses the ping response received from the PD device 200. The system side of the PD-side device 200 determines whether an operation delay that occurs outside a preset threshold occurs.

As such, when the system down of the PD side device 200 or an operation delay state that deviates from a predetermined threshold value is detected based on the watchdog monitoring result using the ping response of the PD side device 200, the PSE side device 100 is detected. Determining a remote reboot of the PD side device 200, and performs a power switch for the remote reboot of the PD side device 200. That is, the PD side device 200 checks whether a power reset signal is set in advance based on the on / off signal generated by power switching.

Then, the PD side device 200 checks the power reset signal according to the power switch for remote reboot of the PSE side device 100, and performs a hardware reset according to the checked power reset signal to reboot the CPU.

That is, the embodiment of FIG. 2B controls power reset by opening and closing the power supplied to the corresponding PD side device 200 when a system down or an operation delay state of the PD side device 200 is detected by the PSE side device 100. Then, the PD side device 200 confirms this and then performs a hardware reset to reboot the CPU to return to the normal operation state.

In addition, in the present invention, as a method of detecting system down or operation delay between remote systems (i.e., PSE and PD), a simple communication echo message (i.e., ping) is transmitted and received through the Ethernet communication port as described above. Although sensing has been described as an example, it will be appreciated that the PLC can be known using a communication message of the PLC itself.

3 is a view showing in more detail the configuration of the PSE side device 100 of FIG.

3A shows a defect such as a system down or an operation delay of the PSE side device 100 in the PD side device 200, and then informs the PSE side device 100 of the defect in the PSE side device 100. As a configuration for an embodiment of performing a self reset, the PSE device 100 may include a PSE (power supply unit) 110, an IV abnormal detection unit 120, a first reset unit 130, a storage unit 140, PSE control unit 150 and the like.

The PSE (power supply unit) 110 supplies operating power (for example, DC 48V power) to the PD side device 200 connected through the UTP cable.

When the IV abnormality detecting unit 120 performs a watchdog monitoring of the PSE side device 100 by the PD side device 200 to control the reset of the PSE side device 100 having a defect, the PD side device At 200, a function of detecting an abnormal current or voltage state (ie, an IV abnormal signal) generated by forcing on the UTP cable is performed.

In addition, the IV abnormal detection unit 120 compares the detected IV abnormal signal with the IV abnormal signal information for rebooting previously set in the storage unit 160 to determine whether the detected IV abnormal signal is a power reset signal or a surge or It is confirmed whether or not the actual IV abnormal situation due to disturbance such as noise, and outputs the confirmation result to the PSE controller 150. At this time, whether the IV abnormal signal is a power reset signal or an actual IV abnormal condition is configured to be directly processed by the PSE controller 150 which has received detection information on the IV abnormal signal from the IV abnormal detection unit 120. can do.

When the IV abnormal signal detected by the IV abnormal detection unit 120 is identified as a power reset signal for rebooting, the first reset unit 130 may control the PSE device 100 based on the control of the PSE controller 150. It resets itself and reboots so that it can be quickly recovered from fault condition such as system down or operation delay.

The storage unit 140 stores various programs for driving and controlling the PSE device 100, and compares the PSE device with the IV abnormal signal generated by the PD device 200 forcibly. IV abnormal signal pattern information for performing a self reset of 100) is stored.

The PSE control unit 150 controls the overall driving of the PSE side device 100 as a whole, and controls the operation power supply to the PD side device 200 through the PSE (power supply unit) 110. And controlling the detection of the IV abnormal signal in the IV abnormal detection unit 120 and the confirmation of the actual abnormal situation due to the power reset signal or the disturbance based on the IV abnormal signal detection, and according to the confirmation of the power reset signal of the IV abnormal detection unit 120. The reset processing of the PSE side device 100 in the first reset unit 130 is controlled.

FIG. 3B shows a defect such as system down or operation delay of the PD side device 200 in the PSE side device 100, and then opens and closes power supplied to the PD side device 200 to open and close the PD side device 200. As a configuration for an embodiment of performing a reset in the), the PSE device 100 is a PSE (power supply unit) 110, the first watchdog monitoring unit 160, power management unit 170, storage unit 140a ), The PSE control unit 150a, and the like.

The PSE (power supply unit) 110 supplies operating power (for example, DC 48V power) to a remote PD side device 200 connected through a UTP cable.

The first watchdog monitoring unit 160 requests a specific ping message for the watchdog monitoring to the PD device 200 remotely connected by a UTP cable, and then whether the ping response arrives from the PD device 200. And the system down or operation delay of the PD device 200 based on the measurement of the processing speed.

In addition, the first watchdog monitoring unit 160 determines a remote reboot of the PD-side device 200 when a system down or operation delay of the PD-side device 200 is confirmed based on the watchdog monitoring result. Information about the reboot decision is output to the PSE controller 150a.

The power management unit 170 based on the remote reboot determination of the specific PD side device 200 of the first watchdog monitoring unit 160 to the corresponding PD side device 200 under the control of the PSE control unit 150a. A power reset signal is generated by opening and closing the power supply.

The storage unit 140a stores various programs for driving and controlling the PSE-side device 100, and a power source performed by the PSE-side device 100 for remote rebooting of the PD-side device 200. It stores pattern information about power reset signal according to opening and closing.

The PSE control unit 150a controls the overall driving of the PSE side device 100 as a whole, and controls the operation power supply to the PD side device 200 through the PSE (power supply unit) 110. In addition, the first watchdog monitoring unit 160 checks for defects such as system down or operation delay of the PD device 200 according to the watchdog monitoring by transmitting and receiving a ping signal with the PD device 200. The power management unit 170 controls the power switch for remote reboot of the PD-side device 200.

On the other hand, the detailed configuration of the PSE side device 100 has been described as an example that is configured separately as in each of the embodiments of Figures 3a and 3b, but it will be understood that it can be integrated in accordance with the use environment.

4 is a view showing in detail the configuration of the PD side device 200 of FIG.

4A is a configuration of the remote PD side device 200 corresponding to the configuration of the PSE side device 100 in the embodiment of FIG. 3A, wherein the PD (power receiver) 210 and the second watchdog monitoring unit ( 220), IV abnormality generation unit 230, storage unit 240, PD control unit 250 and the like.

The PD (power receiver) 210 receives power from the PSE side device 100 connected through a UTP cable and supplies operating power to each internal component.

The second watchdog monitoring unit 220 requests a specific ping message for the watchdog monitoring from the PSE device 100, and then measures whether the ping response arrives from the PSE device 100 and measures the processing speed. On the basis of this, the system down or operation delay of the PSE side device 100 is checked.

In addition, the second watchdog monitoring unit 220 determines a remote reboot of the PSE device 100 when the system down or operation delay of the PSE device 100 is confirmed based on the watchdog monitoring result. Information about the reboot decision is output to the PD controller 250.

The IV abnormality generation unit 230 is set in advance on the UTP cable connected to the PSE side device 100 based on the remote reboot determination of the PSE side device 100 of the second watchdog monitoring unit 220. Generate specific IV abnormal signal.

That is, the IV abnormality generation unit 230 performs the watchdog monitoring of the PSE side device 100 in the PD side device 200 to control the reset of the PSE side device 100 in which the defect occurs. Based on the IV abnormal signal pattern information for remote reboot stored in the 240 is to generate an IV abnormal signal, which is an abnormal current, voltage on the UTP cable.

At this time, the IV abnormal signal for forced abnormal current and voltage should be distinguished from the normal IV abnormal signal actually generated by surge and noise. Use different methods or adjust the range of values.

The storage unit 240 stores various programs for driving and controlling the PD side device 200 and reboots the PSE side device 100 forcibly generated by the IV abnormality generation unit 230. IV abnormal signal pattern information is stored.

The PD control unit 250 is a part for overall control of the overall operation of the PD side device 200, and receives power from the PSE side device 100 through the PD (power receiving unit) 210 and each component thereof. The system down or delay the operation of the PSE side apparatus 100 according to the watchdog monitoring by transmitting and receiving a ping signal from the second watchdog monitoring unit 220 to the PSE side apparatus 100. It controls the defect check for the etc., and controls the forced generation on the UTP cable of the IV abnormal signal which is abnormal current, voltage for the remote reboot of the PSE side device 100 in the IV abnormal generator 230.

FIG. 4B is a configuration of the remote PD side device 200 corresponding to the configuration of the PSE side device 100 in the embodiment of FIG. 3B, and includes a PD (power receiver) 210 and a second reset unit 260. , A storage 240a, a PD controller 250a, and the like.

The PD (power receiver) 210 receives power from the PSE side device 100 connected through a UTP cable and supplies operating power to each internal component.

The second reset unit 260 is a power supply for rebooting the power reset signal received from the PSE side device 100 received through the power receiver 210 according to the power switch in advance in the storage unit 240a Compared with the pattern information of the reset signal, and if the power reset signal is correct as a result of the comparison, the PD side device 200 is reset to perform a reboot, so that it can quickly recover from a defect state such as system down or operation delay.

The storage unit 240a stores various programs for driving and controlling the PD-side device 200, and stores pattern information on a power reset signal according to power switching from the PSE-side device 100. Doing.

The PD controller 250a collectively controls the overall driving of the PD-side device 200, and receives power from the PSE-side device 100 through the power receiver 210 and supplies it to each component. The control unit 260 checks the power reset signal according to the power switch received from the PSE side device 100 through the power receiver 210 in the second reset unit 260 and the PD side device 200 based thereon. Control reset process.

On the other hand, the detailed configuration of the PD-side device 200 has been described by way of example separately configured as in each of the embodiments of Figures 4a and 4b, but it will be understood that it can be integrated in accordance with the use environment.

Next, each embodiment of the remote power control method using the PoE line according to the present invention configured as described above will be described in detail with reference to FIGS. At this time, each step according to the method of the present invention can be changed in order by the environment or those skilled in the art.

5 and 6 are flowcharts showing in detail the operation of the remote power control method using a PoE line according to an embodiment of the present invention, Figure 7 is a remote power control using a PoE line according to another embodiment of the present invention A flowchart detailing the operation of the method.

First, referring to FIGS. 5 and 6, a system down or operation delay of the PSE side device 100 is checked based on the watchdog function on the PD side device 200, and an abnormal current or voltage state is forcibly applied to the line. An embodiment of making the self-reset by detecting the PSE side device 100 is as follows.

The PSE-side device 100 supplies power to the PD-side device 200 through a UTP cable transmitting data, and receives power from the PSE-side device 100 at the PD-side device 200. Perform the operation (S110).

In the process of performing a normal operation between the PSE device 100 and the PD device 200 based on the power supply of step S110, the PD device 200 performs a watchdog monitoring of the other device. In order to request a ping message to the PSE device 100 every time a predetermined time arrives (S120), and receives a ping response from the PSE device 100 (S130).

On the basis of the watchdog monitoring according to the transmission and reception of the ping signal, the PD side device 200 confirms the occurrence of a defect such as a system down, an operation delay, etc. of the PSE side device 100 (S140). That is, the PD side device 200 generates a system delay of the PSE side device 100 or an operation delay that deviates from a preset threshold based on the measurement of the ping response arrival and processing speed from the PSE side device 100. To check.

As a result of the check in step S140, if a defect such as a system down or an operation delay occurs in the PSE device 100, the PD device 200 determines a remote reboot of the PSE device 100 (S150). On the UTP cable connected to the PSE side device 100, an IV abnormal signal which is a preset abnormal current and voltage is forcibly generated (S160).

Then, the PSE side device 100 detects the IV abnormal signal generated on the UTP cable and performs a corresponding process according to the detection (S170).

6, the PSE side device 100 detects an IV abnormal signal generated on the UTP cable in a state of normal operation (S171).

In operation S173, it is determined whether the IV abnormal signal detected in step S172 is a power reset signal for rebooting that is forcibly generated by the PD device 200 (S173).

If the IV abnormal signal detected as a result of the determination of step S173 is a power reset signal for rebooting generated by the PD side device 200, the PSE side device 100 performs a hardware reset (S174). By rebooting the CPU (S175), it is possible to quickly recover from a defect state such as system down or operation delay.

However, if the IV abnormal signal detected as a result of the determination in step S173 is not a power reset signal for rebooting generated by the PD side device 200, the PSE side device 100 detects the IV abnormality detected in step S172. It is determined whether the signal is an abnormality of the actual current or voltage on the line due to disturbance including surge and noise (S176).

If it is determined in step S176 that the actual current and voltage abnormalities on the line are determined, the PSE-side device 100 responds to the IV abnormal signal (S177).

Meanwhile, referring to FIG. 7, after checking the system down or the operation delay of the PD device 200 based on the watchdog function, the PSE device 100 supplies power to the PD device 200. An embodiment of opening and closing and resetting by checking the power reset signal according to power opening and closing of the PSE side device 100 in the PD side device 200 will be described below.

The PSE-side device 100 supplies power to the PD-side device 200 through a UTP cable transmitting data, and receives power from the PSE-side device 100 at the PD-side device 200. Perform the operation (S210).

In the process of performing a normal operation between the PSE device 100 and the PD device 200 based on the power supply of step S110, the PSE device 100 performs the watchdog monitoring of the other device. Whenever a predetermined time arrives, a request for a ping message is sent to the PD device 200 (S220), and a ping response is received from the PD device 200 (S230).

Based on the watchdog monitoring according to the transmission and reception of the ping signal, the PSE side device 100 confirms that a defect such as a system down or an operation delay of the PD side device 200 is generated (S240).

As a result of checking in step S240, if a defect such as a system down or an operation delay occurs in the PD device 200, the PSE device 100 determines a remote reboot of the PD device 200 (S250). According to the pattern information of the power reset signal for rebooting, which is set in advance, the power switch for remote rebooting of the corresponding PD side device 200 is performed (S260), and the power reset signal according to power opening and closing is applied to the PD side device. Transfer to step 200 (S270).

When the PSE side device 100 transmits a power reset signal according to power switching through the step S270, the PD side device 200 receives a power reset signal according to power switching received from the PSE side device 100. It is checked whether the power reset signal is correct by comparing with the pattern information of the power reset signal for rebooting previously stored (S280).

And if the power reset signal is correct based on the check result of step S280, the PD side device 200 performs a reset to reboot the system, it is possible to quickly recover from a fault state such as system down or operation delay ( S290).

As described above, the present invention performs a ping request / response between the PSE side device and the PD side device to monitor whether the other side device is operating normally, and based on the monitoring result, the PSE side device or the PD side device. Since the power is reset to allow rapid restoration, remote power control commands for system maintenance can be easily transmitted, and the communication equipment can be stably operated to improve the quality of equipment and communication environment.

It also prevents outages of disability services in advance, thereby reducing maintenance costs.

Although the present invention has been described with reference to the embodiments illustrated in the drawings, this is merely exemplary, and various modifications and equivalent other embodiments are possible for those skilled in the art to which the art pertains. I will understand the point. Therefore, the technical protection scope of the present invention will be determined by the claims below.

100: PSE device 110: PSE (power supply)
120: IV abnormal detection unit 130: first reset unit
140, 140a: storage unit 150, 150a: PSE control unit
160: first watchdog monitoring unit 170: power management unit
200: PD side device 210: PD (power receiver)
220: second watchdog monitoring unit 230: IV abnormality generation unit
240, 240a: storage unit 250, 250a: PD control unit
260: second reset unit

Claims (15)

In the PSE side equipment,
A PSE for supplying power to a remote PD side device through a PoE line;
The PSE side device monitors the down or operation delay of the PD side device based on a ping request and response through Ethernet communication with the PD side device, and decides to reboot the PD side device when an abnormality of the monitoring result is detected. A first watchdog monitoring unit configured to output a power reset signal to the PD device;
An IV abnormality detecting unit for detecting an abnormal signal from the PD side device in the PSE side device through the PoE line; And
A first reset unit configured to perform a reset on the PSE side device based on the detected IV abnormal signal;
And the IV abnormal signal is a power reset signal forcibly generated in the PoE line by the PD side device. The method according to claim 1,
The PSE side device,
And a power management unit configured to generate a power reset signal by opening and closing the power according to a signal pattern for power reset of the PD side device based on the rebooting of the PD side device of the first watchdog monitoring unit. PSE side equipment. delete The method according to claim 1,
The PSE side device,
And if the detected IV abnormal signal is an abnormal signal caused by an actual abnormal condition caused by disturbance including surge and noise, processing the response to the actual abnormal condition generated on the PoE line. In PD side equipment,
PD powered from PSE side device via PoE line;
A second reset unit configured to perform a reset on the PD side device based on a power reset signal received from the PSE side device through the PoE line;
The PD side device monitors down or operation delay of the PSE device based on a ping request and response through Ethernet communication with the PSE device, and reboots the PSE device if an abnormality is detected. A second watchdog monitoring unit determining; And
And an IV abnormality generating unit generating a predetermined IV abnormal signal to reset the PSE side device in the PD side device based on a reboot decision on the PSE side device.
The power reset signal is generated by opening and closing the power according to a signal pattern for power reset in the PSE device.
And the IV abnormal signal is a power reset signal of the PSE side device forcibly generated in the PoE line. delete delete delete delete delete delete A monitoring step of monitoring down or operation delay of the PSE device based on a ping request and response through the Ethernet communication with the PSE device in a PD device that is powered from a remote PSE device through a PoE line. ;
An IV abnormal signal generating step of generating, when the abnormality is detected in the PSE device, the IV error signal for power reset in the PD device;
An abnormal signal detecting step of detecting, at the PSE side device, an IV abnormal signal generated at the PD side device via the PoE line; And
And performing a reset in the PSE-side device based on the detected IV abnormal signal.
The IV abnormal signal is a power reset signal of the PSE side device which is forcibly generated in the PoE line by the PD side device,
In the performing of the reset, when the detected IV abnormal signal is confirmed as a power reset signal of the PSE device, the PSE device performs a reset by itself. delete The method according to claim 12,
The reset operation step,
Determining, at the PSE side device, if an IV abnormal signal is detected on the PoE line, whether the IV abnormal signal is a power reset signal or an actual abnormal condition due to disturbance including surge and noise;
If the IV abnormal signal detected as a result of the determination is a power reset signal, rebooting by performing a hardware reset by the PSE device; And
If the detected IV abnormal signal is an actual abnormal condition caused by disturbance including surge and noise, processing the response to the actual abnormal condition occurring on the PoE line at the PSE device; Remote power control method. The method according to claim 12,
The IV abnormal signal generation step,
In the PD side device, if an operation delay that deviates from a preset threshold value occurs in the PSE device based on a watchdog monitoring result by transmitting and receiving a ping signal with the PSE device, the power source of the PSE device is supplied to the PoE line. Forcibly generating an IV abnormal signal for a reset; Remote power control method comprising a.

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