WO2014101110A1 - 以太网供电方法、装置、设备和系统 - Google Patents

以太网供电方法、装置、设备和系统 Download PDF

Info

Publication number
WO2014101110A1
WO2014101110A1 PCT/CN2012/087846 CN2012087846W WO2014101110A1 WO 2014101110 A1 WO2014101110 A1 WO 2014101110A1 CN 2012087846 W CN2012087846 W CN 2012087846W WO 2014101110 A1 WO2014101110 A1 WO 2014101110A1
Authority
WO
WIPO (PCT)
Prior art keywords
power
ethernet
power supply
powered
priority
Prior art date
Application number
PCT/CN2012/087846
Other languages
English (en)
French (fr)
Inventor
华睿
顾滢
何章清
杨建光
曹同强
黄安湖
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to ES12884347.1T priority Critical patent/ES2581860T3/es
Priority to CN201280003036.4A priority patent/CN104137473B/zh
Priority to CA2845423A priority patent/CA2845423C/en
Priority to EP12884347.1A priority patent/EP2770664B1/en
Priority to PCT/CN2012/087846 priority patent/WO2014101110A1/zh
Publication of WO2014101110A1 publication Critical patent/WO2014101110A1/zh
Priority to US14/464,514 priority patent/US9268383B2/en

Links

Classifications

    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26Power supply means, e.g. regulation thereof
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/02Details
    • H04L12/10Current supply arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/28Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40Bus networks
    • H04L12/407Bus networks with decentralised control
    • H04L12/413Bus networks with decentralised control with random access, e.g. carrier-sense multiple-access with collision detection [CSMA-CD]

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a power over Ethernet method, apparatus, device, and system.
  • PoE equipment is divided into power supply equipment (English: power sourcing equipment, abbreviation: PSE) and powered devices (English: powered device, abbreviation: PD).
  • PSE power sourcing equipment
  • PD powered device
  • the power supply device supplies power to the powered device through the Ethernet cable.
  • a typical PSE can provide up to 30W of power to a single PD.
  • cloud technology the types of devices supporting remote power supply applications are becoming more and more abundant, such as cloud terminals, high-definition cameras, and notebook computers.
  • the power requirements of these devices may be greater than 30 watts (English: watt, symbol: W), or even 60W or 90W.
  • the PSE may be overloaded or affect the use of multiple low-power PD devices. Summary of the invention
  • the present invention provides a Power over Ethernet method, apparatus, device and system for reducing the impact of high power Ethernet powered devices on low power Ethernet powered devices.
  • the present invention provides a method for powering over a network, including:
  • the power priority of the high-power Ethernet powered device powered by the power-over device of the power-over device is set to the lowest priority, the high-power Ethernet The powered device is an Ethernet powered device with a power demand greater than the set value;
  • the new Ethernet powered device When a new Ethernet powered device is connected to the Power over Ethernet device, the new Ethernet powered device is determined according to a power supply mode of the Power over Ethernet device and a power requirement of the new Ethernet powered device Power priority
  • the power priority of the Ethernet powered device powered by the power over Ethernet device according to the used power of the power over Ethernet device, the power priority of the new Ethernet powered device, and the power over Ethernet device
  • the maximum output power determines whether the Power over Ethernet device is powering the new Ethernet powered device.
  • the determining whether the power-over-powered device supplies power to the new Ethernet powered device includes: Obtaining a current working state of the power-over-powered device according to a maximum output power of the power-over device, a preset first power threshold, and a used power of the power-over device;
  • the current working state is a high load state
  • the power priority of the new Ethernet powered device is greater than the Ethernet priority of the Ethernet powered device powered by the power over Ethernet device
  • Determining a power supply priority of the electrical device determining that the power over Ethernet device supplies power to the new Ethernet powered device, and determining that the power over Ethernet device stops charging the least power of the Ethernet powered device
  • the network is powered by the powered device.
  • the determining whether the power-on-powered device supplies power to the new Ethernet powered device includes:
  • the power-over-powered device stops supplying power to the Ethernet-powered device with the lowest power priority among the Ethernet powered devices that are powered by the power-over device, and prohibits again Powering the Ethernet powered device that is powered off.
  • the present invention provides a power-providing device, including a setting module and a determining module.
  • the setting module is configured to receive, when the power supply mode of the power-on-powered device is the first power supply mode.
  • the power priority of the high-power Ethernet powered device powered by the power-over device is set to the lowest priority, and the high-power Ethernet powered device is an Ethernet powered device with a power requirement greater than a set value;
  • the setting module is further configured to: when a new Ethernet powered device is connected to the Power over Ethernet device, determine according to a power supply mode of the power over Ethernet device and a power requirement of the new Ethernet powered device The power priority of the new Ethernet powered device;
  • the determining module is configured to: according to the used power of the power over Ethernet device, a power priority of the Ethernet powered device powered by the power over Ethernet device, and a power priority of the new Ethernet powered device, And determining, by the maximum output power of the power over Ethernet device, whether the power over Ethernet device supplies power to the new Ethernet powered device.
  • the determining module is specifically configured to: according to a maximum output power of the power-providing device, a preset first power threshold, and used power of the power-over device Obtaining a current working state of the power-over device, if the current working state is a high-load state, if the power priority of the new Ethernet powered device is greater than that of the Ethernet powered device Determining the power supply priority of the Ethernet powered device with the lowest power priority in the network powered device, and determining that the power over Ethernet device is the new one The Ethernet powered device is powered, and it is determined that the Power over Ethernet device stops powering the Ethernet powered device having the lowest power priority among the Ethernet powered devices.
  • the determining module is specifically configured to: according to a maximum output power of the power-providing device, a preset first power threshold, and used power of the power-over device Obtaining a current working state of the power-over device, where the current working state is an overload state, determining that the power-over device stops charging power to an Ethernet powered device that is powered by the power-over device The lowest-level Ethernet powered device is powered, and it is prohibited to supply power to the Ethernet powered device that is powered off again.
  • the present invention provides a power over Ethernet device, including an Ethernet port, a power supply circuit, and a processor;
  • the power supply circuit is connected to the Ethernet port
  • the power supply circuit is connected to the processor
  • the processor sets a power priority of the high power Ethernet powered device powered by the power over Ethernet device to a lowest priority,
  • a high-power Ethernet powered device is an Ethernet powered device with a power demand greater than a set value;
  • the power demand test circuit determines a power requirement of the new Ethernet powered device
  • the processor according to the used power of the power over Ethernet device, the power priority of the Ethernet powered device powered by the power over Ethernet device, the power priority of the new Ethernet powered device, and the The maximum output power of the power over Ethernet device determines whether the power supply circuit supplies power to the new Ethernet powered device.
  • the power-providing device further includes a power mode switching button; the power mode switching button is connected to the processor;
  • the power mode switching button is configured to switch a power mode of the power-over device from a first power mode to a second power mode, and switch a power mode of the power-over device from a second power mode to a first mode Power mode.
  • the processor determines whether the power supply circuit supplies power to the new Ethernet powered device, including:
  • the processor acquires a current working state of the power-over-powered device according to a maximum output power of the power-over device, a preset first power threshold, and a used power of the power-over device; In the case that the current working state is a high load state, if the power priority of the new Ethernet powered device is greater than the Ethernet priority of the Ethernet powered device powered by the power over Ethernet device a power supply priority of the electrical device, the processor determining that the power supply circuit supplies power to the new Ethernet powered device, and determining that the power supply circuit stops the Ethernet with the lowest power priority in the Ethernet powered device The network is powered by the powered device.
  • the processor determines whether the power supply circuit supplies power to the new Ethernet powered device, including:
  • the processor determines that the power supply circuit stops supplying power to an Ethernet powered device having the lowest power priority among the Ethernet powered devices that are powered by the power over Ethernet device, and The power supply circuit is prohibited from supplying power to the Ethernet powered device that is powered off again.
  • the present invention provides a power over Ethernet system, including a power over Ethernet device and a wireless power receiving device, wherein the power over Ethernet device is the Ethernet in any one of the third aspect or the third aspect.
  • a network power supply device wherein the Ethernet power receiving device is connected to the power over Ethernet device through an Ethernet port of the power over Ethernet device.
  • the power supply priority is set to the lowest priority, and the high-power Ethernet power receiving device is reduced to the small power Ethernet.
  • FIG. 1 is a flowchart of a method for powering over a power supply according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of a power over Ethernet device according to an embodiment of the present invention.
  • FIG. 3 is a schematic diagram of a power over Ethernet device according to an embodiment of the present invention.
  • the specific implementation process of the present invention will be exemplified below by way of examples. It will be apparent that the embodiments described below are a part of the embodiments of the invention, rather than all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without departing from the inventive scope are the scope of the present invention.
  • FIG. 1 is a flowchart of a method for powering over a Ethernet according to an embodiment of the present invention. The method includes:
  • the power-on-power device sets the power priority of the high-power Ethernet powered device powered by the power-over device to the lowest priority when the power supply mode of the power-on device is the first power supply mode.
  • High-power Ethernet powered devices are Ethernet powered devices with power requirements greater than the set value.
  • the Power over Ethernet device can be implemented by a separate device, such as a server connected to the Ethernet power supply device, or the Power over Ethernet device can be integrated into the Power over Ethernet device, and the Ethernet power supply device can implement the Ethernet power supply device.
  • the Ethernet power supply device in the embodiment of the present invention is a PSE. Specifically, it may be a network switch or router supporting PoE.
  • the Ethernet powered device in the embodiment of the present invention is a PD.
  • Ethernet powered device that is powered by a Power over Ethernet device is a device that is connected to a Power over Ethernet device through an Ethernet cable and that has been powered by the Power over Ethernet device.
  • the number of Ethernet powered devices powered by Power over Ethernet devices can be one or more.
  • an Ethernet powered device that has a power requirement (English: power requirement) greater than a set value, for example, 30 W, is called a high-power Ethernet powered device, and an Ethernet power receiving device whose power demand is less than or equal to a set value is used.
  • the device is called a low-power Ethernet powered device.
  • the Power over Ethernet device When the power supply mode of the Power over Ethernet device is the first power supply mode, the Power over Ethernet device preferentially supplies power to the low-power Ethernet powered device, and the high-power Ethernet is only required after meeting the power supply requirements of the small-power Ethernet powered device.
  • the network is powered by the powered device.
  • the power supply priority of the high-power Ethernet powered device is set to the lowest priority.
  • the lowest priority is the lowest of all priorities that can be set for an Ethernet powered device, which can be lower than the lowest of all priorities that can be set for a low-power Ethernet powered device. It can also be the same as the lowest one of all priorities that can be set for a low-power Ethernet powered device.
  • a configurable power supply priority of a low-power Ethernet powered device is one of the severe (English: cr it ica l ), high (English: high), low (English: low), and high power.
  • the power priority of the Ethernet powered device is set to very low (English: very low).
  • the order of power priority is from high to low in order of severity, high, low and very low.
  • the configurable power supply priority of the low-power Ethernet powered device is one of severe, high, low (English: low), and the power priority of the high-power Ethernet powered device is set to Low, where the order of power priority is from high to low in order of severity, high and low. Power over Ethernet devices preferentially power Ethernet powered devices with higher power priority.
  • the Power over Ethernet device sets the power priority of the low-power Ethernet powered device according to a preset policy.
  • the preset policy here may be the same as the preset policy used in the case where the power supply mode of the power over-the-counter device is the second power supply mode, or may be different. The following description is based on the preset policy here and the case where the preset policy used in the case where the power supply mode of the power-on-powered device is the second power supply mode is the same.
  • the power supply device sets the power priority of the high-power Ethernet powered device according to a preset policy, where the power supply mode of the power-on device is the second power supply mode, and the preset policy and Power requirements are irrelevant.
  • the Power over Ethernet device does not distinguish between the small power Ethernet powered device and the high power Ethernet powered device, and the Power over Ethernet device is independent of the power demand.
  • the default policy sets the power priority of all Ethernet powered devices.
  • a preset policy that is independent of power requirements may be that the Ethernet powered devices that are connected to the Power over Ethernet device have a higher priority in chronological order, or that the Ethernet connected to the Power over Ethernet device is powered.
  • the device has a high priority.
  • the power priority of the Ethernet powered device is set.
  • the Power over Ethernet device includes 8 Ethernet ports.
  • Ports which are ports 1 to 8, respectively, and the power supply priority of Ethernet powered devices connected to port 1, port 4, and port 5 is severe, and the Ethernet powered devices connected to port 2, port 3, and port 8 are severe.
  • the power supply priority is high, and the power priority of the Ethernet powered device connected to port 6 and port 7 is low.
  • an Ethernet powered device that is connected to an Ethernet port of a Power over Ethernet device has a higher priority.
  • the power mode of the Power over Ethernet device is set by the user of the Power over Ethernet device. For example, if the user of the Power over Ethernet device wants the Power over Ethernet device to preferentially power the small power Ethernet powered device, set the power mode of the Power over Ethernet device to the first power mode;
  • the power supply device is only powered by a policy that is independent of the power demand, and the power supply mode of the power-over device of the power supply is set to the second power supply mode.
  • the power supply mode can be set by software, for example, via the console setting of the Power over Ethernet device, or by hardware, such as by the power mode switch button setting.
  • the power mode switching button is configured to switch the power mode of the power-over device from the first power mode to the second power mode, and switch the power mode of the power-over device from the second power mode to the first power mode .
  • 104 When a new Ethernet powered device is connected to the Power over Ethernet device, determining the new Ethernet according to a power supply mode of the power over Ethernet device and a power requirement of the new Ethernet powered device Power supply priority of electrical equipment.
  • the power priority of the new Ethernet powered device is set to the lowest. priority. If the new Ethernet powered device is a low-power Ethernet powered device, set the power priority of the new Ethernet powered device according to a preset policy. In the case that the power supply mode of the power-over device is the second power supply mode, the power priority of the new Ethernet powered device is set according to a preset policy.
  • the power priority of the Ethernet powered device powered by the power over Ethernet device the power priority of the new Ethernet powered device, and the maximum of the power over Ethernet device Output power, determining whether the power over Ethernet device supplies power to the new Ethernet powered device.
  • the used power of a Power over Ethernet device is the sum of the power actually measured by the Power over Ethernet device and currently powered by all Ethernet powered devices.
  • the Power over Ethernet device can separately measure the power supplied to each Ethernet powered device, and sum the above powers to obtain the used power of the Power over Ethernet device.
  • Power over Ethernet devices can also directly measure the total power supplied to an Ethernet powered device.
  • the Power over Ethernet device can also measure the current supplied to each Ethernet powered device (English: electric current), sum the currents supplied by each of the above Ethernet powered devices, and then multiply the Power over Ethernet device as the Ethernet The voltage supplied by the electrical equipment (English: voltage), the used power of the Ethernet power supply equipment. If the Power over Ethernet device is implemented by a separate device, the Power over Ethernet device obtains the used power measured by the Power over Ethernet device from the Power over Ethernet device. Alternatively, the sum of the power requirements of all Ethernet powered devices powered by Power over Ethernet devices can be used as an approximation of the used power of the Ethernet powered device, without actual measurements.
  • the maximum output power of a Power over Ethernet device is preset to the maximum power that the Power over Ethernet device can supply to the Ethernet powered device.
  • the current working state of the power over Ethernet device is obtained according to the maximum output power of the power-over device, the preset first power threshold, and the used power of the power-over device.
  • the current working state of the Power over Ethernet device can be one of a normal state, a high load state, and an overload state. For example, if the used power of the power-over device is less than or equal to the first power threshold, the current working state of the power-over device is a normal state; the used power of the power-over device is greater than the first power threshold and less than or equal to the power supply of the Ethernet.
  • the maximum output power of the device, the current working state of the power-over device is the high-load state; the used power of the power-over device is greater than the maximum output power of the power-over device, and the current working state of the power-over device is the overload state.
  • the first power gate The value of the limit is less than or equal to the value of the maximum output power of the Power over Ethernet equipment. If the value of the first power threshold is equal to the value of the maximum output power of the power-over device, the current working state of the power-over device may only be one of the normal state and the overload state.
  • the Power over Ethernet device In the case where the current operating state of the Power over Ethernet device is normal, it is determined that the Power over Ethernet device supplies power to the new Ethernet powered device. Alternatively, if the current working state of the power-over device is normal, if the power consumption of the power-over device plus the power demand of the new Ethernet-powered device is less than the maximum output power of the power-over device , Befuding Power over Ethernet equipment supplies power to new Ethernet powered devices.
  • the power priority of the new Ethernet powered device is greater than the Ethernet with the lowest power priority in the Ethernet powered device powered by the Power over Ethernet device Determining the power supply priority of the powered device, determining that the power over Ethernet device supplies power to the new Ethernet powered device, and determining that the power over Ethernet device stops powering the Ethernet with the lowest power priority in the Ethernet powered device The device is powered.
  • the current operating state of the Power over Ethernet device is an overload state
  • determining that the power-on device stops the lowest priority Ethernet in the Ethernet powered device that is powered by the power-over device. Powered by powered devices. Stopping the power supply to the Ethernet powered device with the lowest power priority in the Ethernet powered device powered by the Power over Ethernet device is performed by the Power over Ethernet device. If the current working state of the Power over Ethernet device remains overloaded, Then repeat the above steps to determine that the Power over Ethernet device stops supplying power to the Ethernet powered device with the lowest power priority among the Ethernet powered devices currently powered by the Power over Ethernet device.
  • the method determines whether the power-on Ethernet device supplies power to the new Ethernet powered device.
  • the current working state of the power-over device is an overload state, stopping power supply to the Ethernet powered device with the lowest power priority among the Ethernet powered devices powered by the power-over device It is forbidden to supply power to the Ethernet powered device with the lowest power priority.
  • the use of the ban to power the Ethernet powered device with the lowest power priority can prevent the current working state of the power-over device from oscillating in some specific implementations.
  • the value of the first power threshold is equal to the value of the maximum output power of the power-over device, and the current working state of the power-over device may only be one of the normal state and the overload state.
  • the value of the first power threshold is close to the value of the maximum output power of the power-over device of the power-over device.
  • a single Ethernet powered device may cause the current working state of the power-over device of the Ethernet network to be The pass state changes to an overload state.
  • the Power over Ethernet device is determined to supply power to the new Ethernet powered device without considering the power requirements of the new Ethernet powered device.
  • the current working state may oscillate between the normal state and the overload state. It is forbidden to supply power to the Ethernet powered device with the lowest power priority again, which can prevent this oscillation.
  • the specific scheme for prohibiting the power supply to the Ethernet-powered device with the lowest power priority may be implemented in several different ways, for example, once it is determined that the power supply to an Ethernet powered device is stopped, the power supply to the Ethernet powered device is prohibited from being powered again; If it is detected that the current working state of the power-over device exceeds the preset value within the preset time period, it is prohibited to supply power to the Ethernet powered device with the lowest power priority again; or the same Ethernet is affected. When the number of times the electric device stops supplying power reaches the preset value, it is prohibited to supply power to the Ethernet powered device again.
  • the power-on device sends an alarm.
  • an alarm in the form of sound or light is emitted, or the user of the Power over Ethernet device is alerted by e-mail according to a preset mobile phone number in the form of a short message or according to a preset email address.
  • the value of the second power threshold is greater than or equal to the value of the first power threshold and less than or equal to the maximum output power of the Ethernet power supply device.
  • An Ethernet powered device connected to a Power over Ethernet device may not be an Ethernet powered device powered by a Power over Ethernet device. If the power supply mode of the Power over Ethernet device changes, connect the Ethernet powered device that is not powered by the Power over Ethernet device to the Ethernet powered device connected to the Power over Ethernet device as the new Ethernet powered device. The process determines if these Ethernet powered devices are powered. If the number of Power over Ethernet devices connected to the Power over Ethernet device is not greater than 1 by the number of Power over Ethernet devices, the Ethernet powered device with the highest power priority is used as the new Ethernet powered device. Determine if these Ethernet powered devices are powered. For example, there are five Ethernet powered devices connected to a Power over Ethernet device, and the Power over Ethernet device powers three of the Ethernet powered devices. The power mode of the Power over Ethernet device is the second power mode.
  • One of the three Ethernet powered devices powered by Power over Ethernet devices is a high power Ethernet powered device.
  • the power supply priority of the high-power Ethernet powered device powered by the Ethernet-powered device is severe.
  • the two Ethernet powered devices that are not powered by the Power over Ethernet equipment are low-power Ethernet powered devices.
  • the power supply priorities of the two low-power Ethernet powered devices are high and low, respectively. Since the current working state of the power-over Ethernet device is in a high-load state, it is determined that the power-on device does not supply power to the two low-power Ethernet powered devices. When the power supply mode of the power-over device changes from the second power supply mode to the first power supply mode, the power supply priority of the high-power Ethernet powered device becomes very low.
  • the power priority of two low-power Ethernet powered devices that are not powered by Power over Ethernet devices is either high or low. These two low-power Ethernet powered devices are used as new Ethernet powered devices due to Ethernet power supply settings.
  • the current working state of the standby device is in the high load state, and the power priority of the low-power Ethernet powered device with the high power supply priority is greater than that of the Ethernet powered device with the lowest power supply priority.
  • the power supply priority of the device that is, the above-mentioned high-power Ethernet powered device, determines that the power-over device supplies power to the low-power Ethernet powered device with high power supply priority, and determines that the power-over device stops the above-mentioned high-power Ethernet
  • the network is powered by the powered device.
  • the current working state of the power-over Ethernet device becomes a normal state, and it is determined that the power-over Ethernet device supplies power to the low-power Ethernet powered device with a low power supply priority. If the current working state of the Power over Ethernet device becomes a high load state after powering the low power Ethernet powered device with low power priority, the power supply priority of the high power Ethernet powered device is very low, less than The power supply priority of the Ethernet powered device with the lowest power priority in the Ethernet powered device powered by the Power over Ethernet device determines that the Power over Ethernet device does not supply power to the high power Ethernet powered device. If the power supply of the power-supply device is low, the current working state of the power-over device remains normal. If the power of the power-over device is added to the power-over Ethernet device, The power requirement is less than the maximum output power of the Power over Ethernet device, and it is determined that the Power over Ethernet device supplies power to the high power Ethernet powered device.
  • the Power over Ethernet device includes a setup module 202 and a determination module 204.
  • the Power over Ethernet device can be implemented by a separate device, such as a server connected to the Ethernet power supply device, or the Power over Ethernet device can be integrated into the Power over Ethernet device, and the Power over Ethernet device can be implemented by the Power over Ethernet device.
  • the power-on device in the embodiment of the present invention is a PSE. Specifically, it may be a network switch or router supporting PoE. among them,
  • the setting module 202 is configured to set a power priority of the high-power Ethernet powered device powered by the power-over-powered device to a lowest priority when the power supply mode of the power-over device is the first power supply mode, High-power Ethernet powered devices are Ethernet powered devices with power requirements greater than the set value.
  • the Ethernet powered device in the embodiment of the present invention is a PD. Specifically, it may be a PoE-enabled IP camera, a Vo IP hone, a wireless AP, a NAS, or a thin client.
  • An Ethernet powered device powered by a Power over Ethernet device refers to a device that is connected to a Power over Ethernet device through an Ethernet cable and that has been powered by the Power over Ethernet device.
  • the number of Ethernet powered devices powered by Power over Ethernet devices can be one or more.
  • an Ethernet powered device with a power requirement greater than a set value, for example, 30 W is referred to as a high-power Ethernet powered device, and an Ethernet powered device with a power requirement less than or equal to a set value is referred to as a low-power Ethernet.
  • Network powered devices are referred to as a high-power Ethernet powered device, and an Ethernet powered device with a power requirement less than or equal to a set value.
  • the Power over Ethernet device When the power supply mode of the Power over Ethernet device is the first power supply mode, the Power over Ethernet device preferentially supplies power to the low-power Ethernet powered device, and the high-power Ethernet is only required after meeting the power supply requirements of the small-power Ethernet powered device.
  • the network is powered by the powered device.
  • the setting module 202 sets the power supply priority of the high power Ethernet powered device to the lowest priority.
  • the lowest priority refers to the lowest one of all priorities that the setting module 202 can set for the Ethernet powered device, which can be lower than the lowest among all priorities that can be set for the low power Ethernet powered device.
  • the setting module 202 sets the power priority of the low-power Ethernet powered device to one of serious, high, and low, and the power priority of the high-power Ethernet powered device is set to be very low.
  • the order of power priority is from high to low in order of severity, high, low and very low.
  • the setting module 202 can set the power priority of the low-power Ethernet powered device to one of serious, high, and low, and the power priority of the high-power Ethernet powered device is set to low.
  • the order of power priority is from high to low in order of severity, high and low. Power over Ethernet devices preferentially power Ethernet powered devices with higher power priority.
  • the setting module 202 sets the power priority of the low power Ethernet powered device according to a preset policy.
  • the preset policy here may be the same as or different from the preset policy used by the setting module 202 in the case where the power supply mode of the power over-the-counter device is the second power supply mode. The following description is based on the preset policy here and the case where the preset policy used in the case where the power supply mode of the power-on-powered device is the second power supply mode is the same.
  • the setting module 202 is further configured to set a power priority of the high-power Ethernet powered device according to a preset policy, where the power supply mode of the power-over device is the second power supply mode, the preset The strategy is independent of power requirements.
  • the power-over device does not distinguish between the small-power Ethernet power-receiving device and the high-power Ethernet power-receiving device, and the setting module 202 is not related to the power demand.
  • the policy is set to set the power priority of all Ethernet powered devices.
  • a preset policy that is independent of power requirements may be a chronological order in which the Ethernet powered device that is connected to the Power over Ethernet device has a higher priority, or the Ethernet connected to the Power over Ethernet device is powered.
  • the device has a high priority. For example, according to the preset priority of the Ethernet port of the Ethernet-powered device connected to the Ethernet powered device, the power priority of the Ethernet powered device is set.
  • the Power over Ethernet device includes 8 Ethernet ports. Ports, which are ports 1 to 8, respectively, and the power supply priority of Ethernet powered devices connected to port 1, port 4, and port 5 is severe, and the Ethernet powered devices connected to port 2, port 3, and port 8 are severe.
  • the power supply priority is high, and the power priority of the Ethernet powered device connected to port 6 and port 7 is low.
  • an Ethernet powered device that is connected to an Ethernet port of a Power over Ethernet device has a higher priority.
  • the power mode of the Power over Ethernet device is set by the user of the Power over Ethernet device.
  • Ethernet power supply The backup user wants the Power over Ethernet device to preferentially supply power to the low-power Ethernet powered device, and then sets the power supply mode of the Power over Ethernet device to the first power supply mode; the user of the Power over Ethernet device wants the Power over Ethernet device to If the power demand is irrelevant, the power supply mode of the power-on device is set to the second power supply mode.
  • the power supply mode can be set via software, for example via the console settings of the Power over Ethernet unit, or via hardware, for example via the power mode switch button.
  • the power mode switching button is configured to switch the power mode of the power-over device from the first power mode to the second power mode, and switch the power mode of the power-over device from the second power mode to the first power mode .
  • the setting module 202 is further configured to determine, according to a power supply mode of the power over Ethernet device and a power requirement of the new Ethernet powered device, when a new Ethernet powered device is connected to the power over Ethernet device The power priority of the new Ethernet powered device.
  • the setting module 202 prioritizes the power supply of the new Ethernet powered device. Set to the lowest priority. If the new Ethernet powered device is a low power Ethernet powered device, the setup module 202 sets the power priority of the new Ethernet powered device in accordance with a predetermined policy. In the case where the power supply mode of the power-over device is the second power supply mode, the setting module 202 sets the power priority of the new Ethernet powered device according to a preset policy.
  • the determining module 204 is configured to: according to the used power of the power over Ethernet device, the power priority of the Ethernet powered device powered by the power over Ethernet device, the power priority of the new Ethernet powered device, and the Ethernet The maximum output power of the power supply device determines whether the power over Ethernet device supplies power to the new Ethernet powered device.
  • the used power of the Power over Ethernet device is the sum of the power actually measured by the Power over Ethernet device and currently powered by all Ethernet powered devices.
  • the Power over Ethernet device can measure the power supplied to each Ethernet powered device separately, and sum the above powers to obtain the used power of the Power over Ethernet equipment.
  • Power over Ethernet devices can also directly measure the total power supplied to an Ethernet powered device.
  • the Power over Ethernet device can also measure the current supplied to each Ethernet powered device, summing the currents supplied by each of the Ethernet powered devices, and then multiplying the power supplied by the Power over Ethernet device for the Ethernet powered device. Voltage, the used power of the Power over Ethernet equipment. If the Power over Ethernet device is implemented by a separate device, the determination module 204 obtains the used power measured by the Power over Ethernet device from the Power over Ethernet device.
  • the determination module 204 can use the sum of the power requirements of all Ethernet powered devices powered by the Power over Ethernet device as an approximation of the used power of the Power over Ethernet device, without actually
  • the maximum output power of a Power over Ethernet device is preset to the maximum power that the Power over Ethernet device can supply to the Ethernet powered device.
  • the determining module 204 obtains the current working state of the power over Ethernet device according to the maximum output power of the power over Ethernet device, the preset first power threshold, and the used power of the power over Ethernet device.
  • the current working state of a Power over Ethernet device can be one of a normal state, a high load state, and an overload state. For example, if the used power of the power-over device is less than or equal to the first power threshold, the current working state of the power-over device is a normal state; the used power of the power-over device is greater than the first power threshold and less than or equal to the power supply of the Ethernet.
  • the maximum output power of the device, the current working state of the power-over device is the high-load state; the used power of the power-over device is greater than the maximum output power of the power-over device, and the current working state of the power-over device is the overload state.
  • the value of the first power threshold is less than or equal to the value of the maximum output power of the power over Ethernet device. If the value of the first power threshold is equal to the value of the maximum output power of the power-over device, the current working state of the power-over device may only be one of the normal state and the overload state.
  • the determining module 204 determines that the Ethernet powered device is powering the new Ethernet powered device. Alternatively, if the current working state of the power-over device is normal, if the power consumption of the power-over device plus the power demand of the new Ethernet-powered device is less than the maximum output power of the power-over device The determining module 204 determines that the Power over Ethernet device is powering the new Ethernet powered device.
  • the determining module 204 determines that the power-over device supplies power to the new Ethernet powered device, and determines that the power-over device stops the Ethernet with the lowest power priority in the Ethernet powered device
  • the network is powered by the powered device.
  • the determination module 204 determines that the Power over Ethernet device is not powering the new Ethernet powered device.
  • the determining module 204 determines that the power-on-powered device stops the power supply priority of the Ethernet powered device that is powered by the power-over device. The Ethernet is powered by the powered device. Stopping the power supply to the Ethernet powered device with the lowest power priority in the Ethernet powered device powered by the Power over Ethernet device is performed by the Power over Ethernet device.
  • the determining module 204 repeats the above steps, that is, determining that the power-over device stops supplying power to the Ethernet-powered device having the lowest power priority among the current Ethernet powered devices that are powered by the power-over device. Stop being served by Ethernet After the step of supplying power to the Ethernet powered device having the lowest power supply priority in the Ethernet powered device powered by the electrical device, if the current working state of the power over Ethernet device changes to the normal state or the high load state, the determining module 204 follows the above The current working state of the normal state or the high load state determines whether the Power over Ethernet device is powering the new Ethernet powered device.
  • the determining module 204 determines to stop the Ethernet with the lowest power priority among the Ethernet powered devices that are powered by the power-over device. After the electrical equipment is powered, it is forbidden to supply power to the Ethernet powered device with the lowest priority.
  • the use of the ban to power the Ethernet powered device with the lowest power priority can prevent the current working state of the power-over device from oscillating in some specific implementations.
  • the value of the first power threshold is equal to the value of the maximum output power of the power-over device, and the current working state of the power-over device may only be one of the normal state and the overload state.
  • a single Ethernet powered device may change the current working state of the power-on-network device from the normal state to the overload state. If the current working state of the Power over Ethernet device is normal, the Power over Ethernet device is determined to supply power to the new Ethernet powered device without considering the power requirements of the new Ethernet powered device. The current working state may oscillate between the normal state and the overload state. It is forbidden to supply power to the Ethernet powered device with the lowest power priority again, which can prevent this oscillation.
  • the specific scheme for prohibiting power supply to the Ethernet powered device with the lowest power priority may be implemented in several different ways.
  • the Ethernet powered device is prohibited from being used again.
  • the power module is configured to detect that the current working state of the power-over device exceeds a preset value within a preset time period, it is prohibited to supply power to the Ethernet power-receiving device with the lowest power priority again; or In the case that the number of times the same Ethernet powered device is powered off reaches a preset value, the determining module 204 determines that the power supply to the Ethernet powered device is prohibited from being powered again.
  • the determining module 204 issues an alarm. For example, an alarm in the form of sound or light is emitted, or the user of the Ethernet-powered device is alerted by e-mail according to a preset mobile phone number in the form of a short message or according to a preset email address.
  • the value of the second power threshold is greater than or equal to the value of the first power threshold and less than or equal to the maximum output power of the Ethernet power supply device.
  • An Ethernet powered device connected to a Power over Ethernet device may not be an Ethernet powered device powered by a Power over Ethernet device. If the power supply mode of the power-over device changes, the determination module 204 connects the Ethernet-powered device that is not powered by the power-over device to the Ethernet-powered device connected to the power-over device as the new Ethernet-powered device.
  • the mode is determined. Block 204 uses the Ethernet powered device with the highest power priority as the new Ethernet powered device, and determines whether to power these Ethernet powered devices according to the above procedure.
  • the Power over Ethernet device powers three of the Ethernet powered devices.
  • the power mode of the Power over Ethernet device is the second power mode.
  • One of the three Ethernet powered devices powered by Power over Ethernet devices is a high power Ethernet powered device.
  • the power supply priority of the high-power Ethernet powered device powered by the Ethernet-powered device is severe.
  • the two Ethernet powered devices that are not powered by the Power over Ethernet equipment are low-power Ethernet powered devices.
  • the power supply priorities of the two low-power Ethernet powered devices are high and low, respectively. Since the current working state of the power-over device is a high-load state, it is determined that the power-on device does not supply power to the two low-power Ethernet powered devices.
  • the power supply priority of the high-power Ethernet powered device becomes very low.
  • the power priority of two low-power Ethernet powered devices that are not powered by Power over Ethernet devices is either high or low.
  • the two low-power Ethernet powered devices are used as new Ethernet powered devices. Since the current working state of the Power over Ethernet device is in a high load state, the power supply priority of the low power Ethernet powered device with high priority is given priority.
  • the level is greater than the power receiving priority of the Ethernet powered device with the lowest power priority in the Ethernet powered device powered by the Power over Ethernet device, that is, the power priority of the above-mentioned high power Ethernet powered device, and the determining module 204 determines that the power over Ethernet device is The low-power Ethernet powered device with high power priority is powered, and it is determined that the power-over device stops supplying power to the above-mentioned high-power Ethernet powered device. Since the power supply to the high-power Ethernet powered device is stopped, the current working state of the power-over device becomes a normal state, and the determining module 204 determines that the power-over device supplies power to the low-power Ethernet powered device with a low power priority.
  • the determining module 204 determines that the power over Ethernet device does not supply power to the high power Ethernet powered device. If the power supply of the power-supply device is low, the current working state of the power-over device remains normal. If the power of the power-over device is added to the power-over Ethernet device, The power requirement is less than the maximum output power of the power over Ethernet device, and the determining module 204 determines that the power over Ethernet device supplies power to the high power Ethernet powered device.
  • FIG. 3 is a schematic diagram of a power over Ethernet device according to an embodiment of the present invention.
  • the Power over Ethernet device includes an Ethernet port 302, a power supply circuit 304, and a processor 306.
  • the power-on Ethernet equipment in the embodiment of the present invention is a PSE. Specifically, it may be a network switch or router supporting PoE. among them,
  • the power supply circuit 304 is connected to the Ethernet port 302.
  • the power supply circuit 304 is connected to the processor 306.
  • the thick line in Figure 3 is the bus (English: bus).
  • the Ethernet powered device is connected to the Power over Ethernet device through the Ethernet port 302.
  • the Ethernet powered device and the Power over Ethernet device form a Power over Ethernet system.
  • the processor 306 can be an application specific integrated circuit (English: appl ication-specific integrated circuit, ASIC), field-programmable gate array (English: field-programmable gate array, abbreviation: FPGA), complex programmable logic device (English) : complex programmable logic device , abbreviation: CPLD) , central processing unit (English: central processing unit, abbreviation: CPU) or network processor (English: network processor, abbreviation: NP).
  • ASIC application specific integrated circuit
  • FPGA field-programmable gate array
  • FPGA field-programmable gate array
  • CPLD complex programmable logic device
  • CPU central processing unit
  • NP network processor
  • the Power over Ethernet device also includes a memory.
  • the memory can be a volatile memory (English: vo la ti le memory), such as random access memory (English: random-acces s memory, abbreviation: RAM), or non-volatile memory (English: non-vo la ti Le memory), such as read-only memory (English: read-only memory, abbreviation: ROM), flash memory (English: f ray memory), hard disk (English: hard di sk dr ive, abbreviation: HDD) or solid state drive ( English: so l id-s ta te dr ive, abbreviation: SSD).
  • the processor is coupled to memory 308.
  • the processor 306 performs the following operations in accordance with program instructions stored in the memory.
  • the Power over Ethernet device obtains the power requirement of the Ethernet powered device connected to the Power over Ethernet device through the Ethernet port 302 through the PoE classification (English: classification). Specifically, if the power requirement of the Ethernet powered device is determined by the Data Link Layer classification, the classification may be performed by the processor 306.
  • the power over Ethernet device can also include a power demand test circuit.
  • the power demand test circuit is coupled to the Ethernet port 302.
  • the power demand test circuit is coupled to the processor 306.
  • the power demand test circuit determines, by the grading of the PoE, for example, a Physical Layer classification or a data link layer grading, determining an Ethernet power connection connected to the Power over Ethernet device through the Ethernet port 302. The power requirements of the device.
  • the power demand test circuit notifies the processor of the power requirements of the Ethernet powered device.
  • the physical layer grading is that the power demand test circuit adds a grading voltage to the Ethernet port 302 to measure the grading current to determine the power demand of the Ethernet powered device.
  • the data link layer hierarchy is that after the data link (English: data l ink) is established, the Ethernet power supply device communicates with the Ethernet power receiving device by using a Data Link Layer Protocol (English: Data Link Layer Protocol) to determine the Ethernet. The power requirements of the network powered device.
  • the processor 306 sets the power priority of the high-power Ethernet power receiving device powered by the power-over device to the lowest priority, the large Power Ethernet powered devices are Ethernet powered devices with power requirements greater than the set value.
  • the Ethernet powered device in the embodiment of the present invention is a PD. Specifically, it may be a PoE-enabled IP camera, a VoIP hone, a wireless AP, a NAS, or a thin client.
  • An Ethernet powered device powered by a Power over Ethernet device means that the Ethernet powered device is connected to the Power over Ethernet device through the Ethernet port 302 through an Ethernet cable, and the Power over Ethernet device has powered the Ethernet powered device. device.
  • the number of Ethernet powered devices powered by Power over Ethernet devices can be one or more.
  • an Ethernet powered device with a power requirement greater than a set value, for example, 30 W is referred to as a high-power Ethernet powered device, and an Ethernet powered device with a power requirement less than or equal to a set value is referred to as a low-power Ethernet.
  • Network powered devices are not limited to any particular configuration.
  • the Power over Ethernet device When the power supply mode of the Power over Ethernet device is the first power supply mode, the Power over Ethernet device preferentially supplies power to the low-power Ethernet powered device, and the high-power Ethernet is only required after meeting the power supply requirements of the small-power Ethernet powered device.
  • the network is powered by the powered device.
  • the processor 306 sets the power priority of the high power Ethernet powered device to the lowest priority.
  • the lowest priority is the lowest of all priorities that can be set for an Ethernet powered device, which can be lower than the lowest of all priorities that can be set for a low-power Ethernet powered device. It can also be the same as the lowest one of all priorities that can be set for a low-power Ethernet powered device.
  • the configurable power supply priority of a low-power Ethernet powered device is one of severe, high, and low, while the power priority of a high-power Ethernet powered device is set to very low, where power is prioritized.
  • the order of the levels from high to low is severe, high, low and very low.
  • the configurable power supply priority of the low-power Ethernet powered device is one of severe, high, and low, while the power priority of the high-power Ethernet powered device is set to low, where the power is prioritized.
  • the order of the levels from high to low is severe, high and low.
  • Power over Ethernet devices preferentially power Ethernet powered devices with higher power priority.
  • the processor 306 sets the power priority of the low power Ethernet powered device according to a preset policy.
  • the preset policy here may be the same or different from the following preset policies used in the case where the power supply mode of the power-on-powered device is the second power supply mode.
  • the following description is based on the preset policy here and the case where the preset policy used in the case where the power supply mode of the power-on-powered device is the second power supply mode is the same.
  • the processor 306 sets a power priority of the high-power Ethernet powered device according to a preset policy, where the power supply mode of the power-over device is the second power supply mode, the preset policy. Not related to power requirements.
  • the power-over device does not distinguish between the small-power Ethernet powered device and the high-power Ethernet powered device, and the processor 306 is not related to the power demand.
  • the policy is set to set the power priority of all Ethernet powered devices. For example, a preset policy that is independent of power requirements may be that the Ethernet powered devices that are connected to the Power over Ethernet device have a higher priority in chronological order. Or the Ethernet powered device connected to the Power over Ethernet device has a higher priority.
  • the processor 306 sets the power priority of the Ethernet powered device according to the preset priority of the Ethernet port 302 of the Power over Ethernet device connected to the Ethernet powered device.
  • a Power over Ethernet device consists of eight Ethernet ports 302, which are port 1 to port 8, respectively.
  • the power priority of Ethernet powered devices connected to port 1, port 4, and port 5 is severe, and port 2
  • the power priority of the Ethernet powered device connected to port 3 and port 8 is high, and the power priority of the Ethernet powered device connected to port 6 and port 7 is low.
  • an Ethernet powered device that is connected to the Ethernet port 302 of a Power over Ethernet device has a higher priority.
  • the power mode of the Power over Ethernet device is set by the user of the Power over Ethernet device. For example, if the user of the Power over Ethernet device wants the Power over Ethernet device to preferentially power the small power Ethernet powered device, set the power mode of the Power over Ethernet device to the first power mode;
  • the power supply device is only powered by a policy that is independent of the power demand, and the power supply mode of the power-over device of the power supply is set to the second power supply mode.
  • the power mode can be set by software.
  • the user of the power-over device can set the power mode through the software interface, so that the processor 306 can obtain the power mode of the power-over device.
  • the power mode can also be set by hardware, for example via the power mode switch button.
  • the power-over-powered device further includes a power supply mode switching key.
  • the power mode switching key is coupled to the processor.
  • the power mode switch button can be set on the panel of the Power over Ethernet device.
  • the specific physical form can be a button or a switch.
  • the power mode switching button is configured to switch a power mode of the power-over device from a first power mode to a second power mode, and switch a power mode of the power-over device from a second power mode to a first mode Power mode.
  • the power mode switching button can be connected to the first pin of the processor, and the power mode switching button outputs different levels when the power supply mode of the power over Ethernet device is different, for example, the power mode switching key output when the power mode is the first power mode High level, the power mode switching key outputs a low level when the power supply mode is the second power supply mode.
  • the processor 306 determines the current power mode of the Power over Ethernet device based on the level of the first pin.
  • Figure 3 is set in the power mode by the power mode switching key, and the power mode switching key is connected to the first pin of the processor, as an example.
  • the power mode switch button can also be coupled to the processor 306 via a bus.
  • the power mode switching key When the power supply mode of the power-over device changes, the power mode switching key outputs a preset code, and the processor 306 determines the current mode of the power-over device based on the received code.
  • the power demand test circuit determines the power requirements of the new Ethernet powered device.
  • the processor 306 determines a power priority of the new Ethernet powered device according to a power supply mode of the power over Ethernet device and a power requirement of the new Ethernet powered device. In the case where the power supply mode of the power over Ethernet device is the first power supply mode, if the new Ethernet powered device is a high power Ethernet powered device, the processor 306 prioritizes the power supply of the new Ethernet powered device. Set to the lowest priority. If the new Ethernet powered device is a low power Ethernet powered device, the processor 306 sets the power priority of the new Ethernet powered device according to a preset policy. In the case that the power supply mode of the power-over device is the second power supply mode, the processor 306 sets the power priority of the new Ethernet powered device according to a preset policy.
  • the processor 306 is based on the used power of the power over Ethernet device, the power priority of the Ethernet powered device powered by the power over Ethernet device, the power priority of the new Ethernet powered device, and the power supply of the Ethernet powered device.
  • the maximum output power determines whether the power supply circuit 304 supplies power to the new Ethernet powered device.
  • the Power over Ethernet device also includes a power measuring device that is coupled to the processor 306.
  • the power measuring device can be respectively connected to each of the Ethernet ports 302, and the power measuring device respectively measures the power supplied by each of the Ethernet ports 302.
  • the power measuring device measures the current passing through the Ethernet port 302, and The voltage provided by the Ethernet port 302 derives the power supplied by the Ethernet port 302 based on the current and voltage described above. The power supplied to each Ethernet port 302 is summed to obtain the used power of the power-over device.
  • the power measuring device can also measure the power supplied by the power supply circuit 304. Specifically, the power measuring device measures the current output by the power supply circuit 304 and the voltage output by the power supply circuit 304, and obtains the power supplied by the power supply circuit 304 according to the current and the voltage, as the used power of the power-over device of the power supply.
  • the power measuring device can also measure the current passed by each Ethernet port 302 and measure the voltage output by the power supply circuit 304.
  • the currents passed by the respective Ethernet ports 302 are summed, and then multiplied by the voltage output from the power supply circuit 304 to obtain the used power of the power over Ethernet equipment.
  • Fig. 3 only the last implementation is taken as an example.
  • the "+” and “-” in the figure indicate the positive and negative poles respectively, “V” indicates the voltage measuring terminal, and “I” indicates the current measuring terminal.
  • the maximum output power of a Power over Ethernet device is preset to the maximum power that the Power over Ethernet device can supply to the Ethernet powered device.
  • the processor 306 obtains the current working state of the power over Ethernet device according to the maximum output power of the power-over device, the preset first power threshold, and the used power of the power-over device.
  • the current working state of the Power over Ethernet device can be one of a normal state, a high load state, and an overload state.
  • the current working state of the power-over device is a normal state; If the used power of the Ethernet power supply device is greater than the first power threshold and less than or equal to the maximum output power of the Ethernet power supply device, the current working state of the power over Ethernet device is a high load state; the used power of the power over Ethernet device is greater than the Ethernet The maximum output power of the network power supply device, the current working state of the power over Ethernet device is an overload state.
  • the value of the first power threshold is less than or equal to the value of the maximum output power of the power-over device. If the value of the first power threshold is equal to the value of the maximum output power of the power-over device, the current working state of the power-over device may only be one of the normal state and the overload state.
  • processor 306 determines that power supply circuit 304 is powering the new Ethernet powered device. Specifically, the power supply circuit 304 supplies power to the new Ethernet powered device through the Ethernet port 302. Alternatively, if the current working state of the power-over device is normal, if the power consumption of the power-over device plus the power demand of the new Ethernet-powered device is less than the maximum output power of the power-over device Then, the processor 306 determines that the power supply circuit 304 supplies power to the new Ethernet powered device.
  • the power supply circuit 510 determines that the power supply circuit 304 supplies power to the new Ethernet powered device through the Ethernet port 302, and the processor 306 determines that the power supply circuit 304 stops giving priority to the power supply in the Ethernet powered device. The lowest level Ethernet powered device.
  • processor 306 determines that power supply circuit 304 is not supplying power to the new Ethernet powered device.
  • the processor 306 determines that the power supply circuit 304 stops the lowest power supply priority of the Ethernet powered device that is powered by the power-over device. Ethernet powered devices.
  • Stopping the step of supplying power to the Ethernet powered device having the lowest power priority among the Ethernet powered devices powered by the Power over Ethernet device is performed by the power supply circuit 304, if the current operating state of the power over Ethernet device remains overloaded, The processor 306 repeats the above steps to determine that the power-over device stops supplying power to the Ethernet-powered device having the lowest power priority among the Ethernet powered devices currently powered by the power-over device.
  • the processor 306 determines whether the power-over device supplies power to the new Ethernet powered device according to the method that the current working state is the normal state or the high-load state.
  • the power supply circuit 304 stops the Ethernet power receiving with the lowest power priority among the Ethernet powered devices that are powered by the power-over device. After the device is powered, the processor 306 prohibits the power supply circuit 304 from again having the lowest power priority.
  • the power grid is powered by the power grid.
  • the use of the ban to power the Ethernet powered device with the lowest power priority can prevent the current working state of the power-over device from oscillating in some specific implementations.
  • the value of the first power threshold is equal to the value of the maximum output power of the power-over device, and the current working state of the power-over device may only be one of the normal state and the overload state. Or the value of the first power threshold is closer to the value of the maximum output power of the power-over device of the power-over device.
  • a single Ethernet powered device may change the current working state of the power-on-network device from the normal state to the overload state. If the current working state of the Power over Ethernet device is normal, the Power over Ethernet device is determined to supply power to the new Ethernet powered device without considering the power requirements of the new Ethernet powered device.
  • the current working state may oscillate between the normal state and the overload state. It is forbidden to supply power to the Ethernet powered device with the lowest power priority again, which can prevent this oscillation.
  • the specific scheme for prohibiting power supply to the Ethernet powered device with the lowest power priority may be implemented in several different ways. For example, if the processor 306 determines to stop supplying power to an Ethernet powered device, the power supply circuit 304 prohibits the Ethernet from being used again.
  • the network power receiving device supplies power; or the processor 306 detects that the current working state of the power-over device exceeds a preset value within a preset time period, and prohibits the power supply circuit 304 from being the Ethernet with the lowest power priority again.
  • the processor 306 prohibits the power supply circuit 304 from supplying power to the Ethernet powered device again.
  • the power supply circuit 304 is configured to supply power to the Ethernet powered device again.
  • the processor 306 may no longer send an instruction to the power supply circuit 304 to supply power to the prohibited Ethernet powered device, or may specifically provide power to the processor 306.
  • Circuit 304 issues an indication that power to the Ethernet powered device is disabled.
  • the processor 306 issues an alarm.
  • the processor 306 instructs the speaker of the Power over Ethernet device to issue an alert in the form of a sound, or the processor 306 instructs the indicator light of the Power over Ethernet device or the display to emit an alert in the form of light, or the processor 306 according to the preset mobile phone number
  • the value of the second power threshold is greater than or equal to the value of the first power threshold and less than the value of the maximum output power of the Ethernet power supply device.
  • An Ethernet powered device connected to a Power over Ethernet device may not be an Ethernet powered device powered by a Power over Ethernet device. If the power supply mode of the Power over Ethernet device changes, connect the Ethernet powered device that is not powered by the Power over Ethernet device to the Ethernet powered device connected to the Power over Ethernet device as the new Ethernet powered device. The process determines if these Ethernet powered devices are powered. If the number of Power over Ethernet devices connected to the Power over Ethernet device is not greater than 1 by the number of Power over Ethernet devices, the Ethernet powered device with the highest power priority is used as the new Ethernet powered device. Determine if these are Ethernet Electrical equipment is powered. For example, there are five Ethernet powered devices connected to a Power over Ethernet device, and the Power over Ethernet device powers three of the Ethernet powered devices.
  • the power mode of the Power over Ethernet device is the second power mode.
  • One of the three Ethernet powered devices powered by Power over Ethernet devices is a high power Ethernet powered device.
  • the power supply priority of the high-power Ethernet powered device powered by the Ethernet-powered device is severe.
  • the two Ethernet powered devices that are not powered by the Power over Ethernet equipment are low-power Ethernet powered devices.
  • the power supply priorities of the two low-power Ethernet powered devices are high and low, respectively. Since the current working state of the power-over Ethernet device is in a high-load state, it is determined that the power-on device does not supply power to the two low-power Ethernet powered devices.
  • the power supply mode of the power-over device changes from the second power supply mode to the first power supply mode, the power supply priority of the high-power Ethernet powered device becomes very low.
  • the power priority of two low-power Ethernet powered devices that are not powered by Power over Ethernet devices is either high or low. These two low-power Ethernet powered devices are used as new Ethernet powered devices. Since the current working state of the Ethernet-powered devices is in a high-load state, the power supply priority of the low-power Ethernet powered devices is given priority.
  • the current working state of the power-over Ethernet device becomes a normal state, and it is determined that the power-over Ethernet device supplies power to the low-power Ethernet powered device with a low power supply priority. If the current working state of the Power over Ethernet device becomes a high load state after powering the low power Ethernet powered device with low power priority, the power supply priority of the high power Ethernet powered device is very low, less than The power supply priority of the Ethernet powered device with the lowest power priority in the Ethernet powered device powered by the Power over Ethernet device determines that the Power over Ethernet device does not supply power to the high power Ethernet powered device. If the power supply of the power-supply device is low, the current working state of the power-over device remains normal. If the power of the power-over device is added to the power-over Ethernet device, The power requirement is less than the maximum output power of the Power over Ethernet device, and it is determined that the Power over Ethernet device supplies power to the high power Ethernet powered device.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Power Sources (AREA)
  • Small-Scale Networks (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

本发明提供了一种以太网供电方法、装置、设备和系统,以减小大功率以太网受电设备对小功率以太网受电设备的影响。本发明中,在以太网供电设备的供电模式是第一供电模式的情况下,将受到所述以太网供电设备供电的大功率以太网受电设备的供电优先级设置为最低优先级,所述大功率以太网受电设备是功率需求大于设置值的以太网受电设备;新的以太网受电设备连接到所述以太网供电设备时,根据所述以太网供电设备的供电模式和所述新的以太网受电设备的功率需求确定所述新的以太网受电设备的供电优先级;根据所述以太网供电设备的已用功率,受到以太网供电设备供电的以太网受电设备的供电优先级,所述新的以太网受电设备的供电优先级,以及所述以太网供电设备的最大输出功率,确定所述以太网供电设备是否为所述新的以太网受电设备供电。

Description

以太网供电方法、 装置、 设备和系统 技术领域 本发明涉及通信技术领域, 尤其涉及一种以太网供电方法、 装置、 设备和系统。 背景技术 以太网供电(英文: Power over Ethernet, 缩写: PoE), PoE设备分为供电设备(英 文: power sourcing equipment , 缩写: PSE) 禾口受电设备 (英文: powered device , 缩写: PD)。 供电设备通过以太网线给受电设备供电。 通常的 PSE可给单个 PD提供最大 30W的功率。 近几年随着云技术的发展, 支持远程供电应用的设备种类越来越丰富, 例 如云终端、 高清摄像头以及笔记本电脑等。 这些设备的功率需求可能大于 30瓦特 (英 文: watt,符号: W), 甚至可以达到 60W或 90W。大功率 PD设备接入以太网供电系统后, 可能导致 PSE过载, 或者影响多个小功率 PD设备的使用。 发明内容
本发明提供了一种以太网供电方法、 装置、 设备和系统, 以减小大功率以太网受电 设备对小功率以太网受电设备的影响。
第一方面, 本发明提供了一种以太网供电方法, 包括:
在以太网供电设备的供电模式是第一供电模式的情况下,将受到所述以太网供电设 备供电的大功率以太网受电设备的供电优先级设置为最低优先级,所述大功率以太网受 电设备是功率需求大于设置值的以太网受电设备;
新的以太网受电设备连接到所述以太网供电设备时,根据所述以太网供电设备的供 电模式和所述新的以太网受电设备的功率需求确定所述新的以太网受电设备的供电优 先级;
根据所述以太网供电设备的已用功率, 受到以太网供电设备供电的以太网受电设备 的供电优先级, 所述新的以太网受电设备的供电优先级, 以及所述以太网供电设备的最 大输出功率, 确定所述以太网供电设备是否为所述新的以太网受电设备供电。
在第一方面的第一种实现方式中,所述确定所述以太网供电设备是否为所述新的以 太网受电设备供电, 包括: 根据所述以太网供电设备的最大输出功率, 预设的第一功率门限和所述以太网供电 设备的已用功率, 获取所述以太网供电设备的当前工作状态;
在所述当前工作状态为高载状态的情况下, 如果所述新的以太网受电设备的供电优 先级大于受到以太网供电设备供电的以太网受电设备中供电优先级最低的以太网受电 设备的供电优先级, 确定所述以太网供电设备为所述新的以太网受电设备供电, 并且确 定所述以太网供电设备停止对所述以太网受电设备中供电优先级最低的以太网受电设 备供电。
在第一方面的第二种实现方式中, 其特征在于, 所述确定所述以太网供电设备是否 为所述新的以太网受电设备供电, 包括:
根据所述以太网供电设备的最大输出功率, 预设的第一功率门限和所述以太网供电 设备的已用功率, 获取所述以太网供电设备的当前工作状态;
在所述当前工作状态为过载状态的情况下,确定所述以太网供电设备停止对受到以 太网供电设备供电的以太网受电设备中供电优先级最低的以太网受电设备供电, 并禁止 再次为所述被停止供电的以太网受电设备供电。
第二方面, 本发明提供了一种以太网供电装置, 包括设置模块和确定模块; 其中, 所述设置模块, 用于在以太网供电设备的供电模式是第一供电模式的情况下, 将受 到所述以太网供电设备供电的大功率以太网受电设备的供电优先级设置为最低优先级, 所述大功率以太网受电设备是功率需求大于设置值的以太网受电设备;
所述设置模块, 还用于在新的以太网受电设备连接到所述以太网供电设备时, 根据 所述以太网供电设备的供电模式和所述新的以太网受电设备的功率需求确定所述新的 以太网受电设备的供电优先级;
所述确定模块, 用于根据所述以太网供电设备的已用功率, 受到以太网供电设备供 电的以太网受电设备的供电优先级, 所述新的以太网受电设备的供电优先级, 以及所述 以太网供电设备的最大输出功率,确定所述以太网供电设备是否为所述新的以太网受电 设备供电。
在第二方面的第一种实现方式中, 所述确定模块, 具体用于根据所述以太网供电设 备的最大输出功率, 预设的第一功率门限和所述以太网供电设备的已用功率, 获取所述 以太网供电设备的当前工作状态, 在所述当前工作状态为高载状态的情况下, 如果所述 新的以太网受电设备的供电优先级大于受到以太网供电设备供电的以太网受电设备中 供电优先级最低的以太网受电设备的供电优先级,确定所述以太网供电设备为所述新的 以太网受电设备供电, 并且确定所述以太网供电设备停止对所述以太网受电设备中供电 优先级最低的以太网受电设备供电。
在第二方面的第二种实现方式中, 所述确定模块, 具体用于根据所述以太网供电设 备的最大输出功率, 预设的第一功率门限和所述以太网供电设备的已用功率, 获取所述 以太网供电设备的当前工作状态, 在所述当前工作状态为过载状态的情况下, 确定所述 以太网供电设备停止对受到以太网供电设备供电的以太网受电设备中供电优先级最低 的以太网受电设备供电, 并禁止再次为所述被停止供电的以太网受电设备供电。
第三方面, 本发明提供了一种以太网供电设备, 包括以太网端口, 供电电路, 处理 器; 其中,
所述供电电路与所述以太网端口相连;
所述供电电路与所述处理器相连;
在以太网供电设备的供电模式是第一供电模式的情况下,所述处理器将受到所述以 太网供电设备供电的大功率以太网受电设备的供电优先级设置为最低优先级,所述大功 率以太网受电设备是功率需求大于设置值的以太网受电设备;
新的以太网受电设备连接到所述以太网供电设备时,所述功率需求测试电路确定所 述新的以太网受电设备的功率需求;
所述处理器根据所述以太网供电设备的供电模式和所述新的以太网受电设备的功 率需求确定所述新的以太网受电设备的供电优先级;
所述处理器根据所述以太网供电设备的已用功率, 受到以太网供电设备供电的以太 网受电设备的供电优先级, 所述新的以太网受电设备的供电优先级, 以及所述以太网供 电设备的最大输出功率, 确定所述供电电路是否为所述新的以太网受电设备供电。
在第三方面的第一种实现方式中, 所述以太网供电设备还包括供电模式切换键; 所述供电模式切换键与所述处理器相连;
所述供电模式切换键用于将所述以太网供电设备的供电模式从第一供电模式切换 到第二供电模式, 以及将所述以太网供电设备的供电模式从第二供电模式切换到第一供 电模式。
在第三方面的第二种实现方式中,所述处理器确定所述供电电路是否为所述新的以 太网受电设备供电, 包括:
所述处理器根据所述以太网供电设备的最大输出功率, 预设的第一功率门限和所述 以太网供电设备的已用功率, 获取所述以太网供电设备的当前工作状态; 在所述当前工作状态为高载状态的情况下, 如果所述新的以太网受电设备的供电优 先级大于受到以太网供电设备供电的以太网受电设备中供电优先级最低的以太网受电 设备的供电优先级, 所述处理器确定所述供电电路为所述新的以太网受电设备供电, 并 且确定所述供电电路停止对所述以太网受电设备中供电优先级最低的以太网受电设备 供电。
在第三方面的第三种实现方式中,所述处理器确定所述供电电路是否为所述新的以 太网受电设备供电, 包括:
所述处理器根据所述以太网供电设备的最大输出功率, 预设的第一功率门限和所述 以太网供电设备的已用功率, 获取所述以太网供电设备的当前工作状态;
在所述当前工作状态为过载状态的情况下,所述处理器确定所述供电电路停止对受 到以太网供电设备供电的以太网受电设备中供电优先级最低的以太网受电设备供电, 并 禁止供电电路再次为所述被停止供电的以太网受电设备供电。
第四方面, 本发明提供了一种以太网供电系统, 包括以太网供电设备和太网受电设 备,所述以太网供电设备为第三方面或第三方面的任意一种实现方式中的以太网供电设 备,所述以太网受电设备通过所述以太网供电设备的以太网端口与所述以太网供电设备 相连。
由上述技术方案可知, 本发明中的大功率以太网受电设备在第一供电模式下, 供电 优先级被设置为最低优先级,减小了大功率以太网受电设备对小功率以太网受电设备的 影响。 附图说明 为了更清楚地说明本发明实施例或现有技术中的技术方案, 下面将对实施例或现有 技术描述中所需要使用的附图作简单地介绍, 显而易见地, 下面描述中的附图仅仅是本 发明的一些实施例, 对于本领域普通技术人员来讲, 在不付出创造性劳动性的前提下, 还可以根据这些附图获得其他的附图。
图 1为本发明实施例的以太网供电方法流程图;
图 2为本发明实施例的以太网供电装置示意图;
图 3为本发明实施例的以太网供电设备示意图。 具体实施方式 下面通过实施例对本发明的具体实现过程进行举例说明。 显然, 下面所描述的实施 例是本发明一部分实施例, 而不是全部的实施例。 基于本发明中的实施例, 本领域普通 技术人员在没有做出创造性劳动前提下所获得的所有其他实施例, 都属于本发明保护的 范围。
图 1为本发明实施例的以太网供电方法流程图。 该方法包括:
102、 以太网供电装置在以太网供电设备的供电模式是第一供电模式的情况下, 将 受到以太网供电设备供电的大功率以太网受电设备的供电优先级设置为最低优先级,所 述大功率以太网受电设备是功率需求大于设置值的以太网受电设备。
以太网供电装置可以由独立的装置, 例如一台与太网供电设备相连的服务器实现, 或者以太网供电装置可以整合在以太网供电设备中, 由以太网供电设备实现该以太网供 电装置。 本发明实施例中的以太网供电设备是 PSE, 具体的, 可以是支持 PoE的网络交换 机或者路由器。 本发明实施例中的以太网受电设备是 PD, 具体的, 可以是支持 PoE的网 际协议摄像头 (英文: Internet protocol camera , 简称为 IP camera ) , 网际协议上 的语音电话 (英文: voice over Internet Protocol phone, 简称为 VoIP phone) , 无 线接入点(英文: acces s point ,缩写: AP), 网络附加存储器(英文: network-at tached s torage, 缩写: NAS ) 或者瘦客户端 (英文: thin cl ient ) 。 受到以太网供电设备供 电的以太网受电设备是指该以太网受电设备通过以太网线与以太网供电设备相连, 并且 以太网供电设备已经为该以太网受电设备供电的设备。受到以太网供电设备供电的以太 网受电设备的数量可以是一个或多个。 本发明实施例中, 将功率需求 (英文: power requirement ) 大于设置值, 例如 30W, 的以太网受电设备称为大功率以太网受电设备, 将功率需求小于等于设置值的以太网受电设备称为小功率以太网受电设备。
在以太网供电设备的供电模式是第一供电模式的情况下, 以太网供电设备优先为小 功率以太网受电设备供电,在满足小功率以太网受电设备的供电需求后才对大功率以太 网受电设备供电。 为此, 在以太网供电设备的供电模式是第一供电模式的情况下, 将大 功率以太网受电设备的供电优先级设置为最低优先级。最低优先级是指可以为以太网受 电设备设置的所有优先级中最低的一个优先级, 该最低优先级可以低于可以为小功率以 太网受电设备设置的所有优先级中最低的一个, 也可以和可以为小功率以太网受电设备 设置的所有优先级中最低的一个优先级相同。 举例来说, 小功率以太网受电设备的可设 置的供电优先级为严重 (英文: cr i t ica l ) , 高 (英文: high) , 低 (英文: low) 中 的一种, 而大功率以太网受电设备的供电优先级被设置为非常低 (英文: very low) , 其中供电优先级的顺序由高到低依次为严重, 高, 低和非常低。 另一个例子中, 小功率 以太网受电设备的可设置的供电优先级为严重, 高, 低 (英文: low) 中的一种, 而大 功率以太网受电设备的供电优先级被设置为低,其中供电优先级的顺序由高到低依次为 严重, 高和低。 以太网供电设备优先为供电优先级较高的以太网受电设备供电。 以太网 供电装置按照预设的策略设置小功率以太网受电设备的供电优先级。这里的预设的策略 与下述在以太网供电设备的供电模式是第二供电模式的情况下用的预设的策略,可以是 相同的, 也可以是不同的。 以下按照这里的预设的策略与下述在以太网供电设备的供电 模式是第二供电模式的情况下用的预设的策略是相同的情况来描述。
在所述以太网供电设备的供电模式是第二供电模式的情况下, 以太网供电装置按照 预设的策略设置所述大功率以太网受电设备的供电优先级,所述预设的策略与功率需求 无关。
在以太网供电设备的供电模式是第二供电模式的情况下, 以太网供电设备不区分小 功率以太网受电设备和大功率以太网受电设备供电, 以太网供电装置按照与功率需求无 关的预设的策略设置所有以太网受电设备的供电优先级。 举例来说, 与功率需求无关的 预设的策略可以是按照时间顺序,先连接到以太网供电设备的以太网受电设备的优先级 高, 或者后连接到以太网供电设备的以太网受电设备的优先级高。 又如, 根据以太网受 电设备连接的以太网供电设备的以太网端口被预先设置的优先级, 设置以太网受电设备 的供电优先级, 举例来说, 以太网供电设备包括 8个以太网端口, 分别为端口 1至端口 8, 与端口 1, 端口 4, 端口 5连接的以太网受电设备的供电优先级为严重, 与端口 2, 端口 3, 端口 8连接的以太网受电设备的供电优先级为高, 与端口 6, 端口 7连接的以太网受电设 备的供电优先级为低。 又如, 连接到以太网供电设备的以太网端口的编号较小的以太网 受电设备的优先级高。
以太网供电设备的供电模式由以太网供电设备的使用者设置。 例如, 以太网供电设 备的使用者希望以太网供电设备优先对小功率以太网受电设备供电, 则设置以太网供电 设备的供电模式为第一供电模式; 以太网供电设备的使用者希望以太网供电设备仅以与 功率需求无关的策略供电, 则设置以太网供电设备的供电模式为第二供电模式。
供电模式可以通过软件方式设置, 例如通过以太网供电装置的控制台设置, 或通过 硬件方式设置, 例如通过供电模式切换键设置。 供电模式切换键用于将所述以太网供电 设备的供电模式从第一供电模式切换到第二供电模式, 以及将所述以太网供电设备的供 电模式从第二供电模式切换到第一供电模式。 104、 新的以太网受电设备连接到所述以太网供电设备时, 根据所述以太网供电设 备的供电模式和所述新的以太网受电设备的功率需求确定所述新的以太网受电设备的 供电优先级。
在以太网供电设备的供电模式是第一供电模式的情况下, 如果新的以太网受电设备 是大功率以太网受电设备, 将该新的以太网受电设备的供电优先级设置为最低优先级。 如果新的以太网受电设备是小功率以太网受电设备, 按照预设的策略设置该新的以太网 受电设备的供电优先级。 在以太网供电设备的供电模式是第二供电模式的情况下, 按照 预设的策略设置该新的以太网受电设备的供电优先级。
106、 根据以太网供电设备的已用功率, 受到以太网供电设备供电的以太网受电设 备的供电优先级, 所述新的以太网受电设备的供电优先级, 以及以太网供电设备的最大 输出功率, 确定所述以太网供电设备是否为所述新的以太网受电设备供电。
以太网供电设备的已用功率为以太网供电设备测量得到的, 当前为所有以太网受电 设备实际供电的功率之和。 以太网供电设备可以分别测量为各个以太网受电设备供电的 功率, 并对上述各个功率求和得到以太网供电设备的已用功率。 以太网供电设备也可以 直接测量为以太网受电设备供电的总功率。 以太网供电设备也可以测量为各个以太网受 电设备供电的电流 (英文: electric current ) , 对上述各个以太网受电设备供电的电 流求和后, 再乘以以太网供电设备为以太网受电设备供电所提供的电压 (英文: voltage ) , 得到以太网供电设备的已用功率。 如果以太网供电装置由独立的装置实现, 以太网供电装置从以太网供电设备获取该以太网供电设备测量得到的的已用功率。可选 的,可以用所有受到以太网供电设备供电的以太网受电设备的功率需求之和作为以太网 供电设备的已用功率的近似值, 而不做实际测量。
以太网供电设备的最大输出功率是预先设置的, 以太网供电设备能够为以太网受电 设备供电的功率的最大值。
具体的, 根据以太网供电设备的最大输出功率, 预设的第一功率门限和以太网供电 设备的已用功率, 获取以太网供电设备的当前工作状态。 以太网供电设备的当前工作状 态可以为普通状态, 高载状态和过载状态中的一种。 例如, 以太网供电设备的已用功率 小于等于第一功率门限, 则以太网供电设备的当前工作状态为普通状态; 以太网供电设 备的已用功率大于于第一功率门限并小于等于以太网供电设备的最大输出功率, 则以太 网供电设备的当前工作状态为高载状态; 以太网供电设备的已用功率大于以太网供电设 备的最大输出功率, 则以太网供电设备的当前工作状态为过载状态。 其中, 第一功率门 限的值小于等于以太网供电设备的最大输出功率的值。 其中, 如果第一功率门限的值等 于以太网供电设备的最大输出功率的值, 则以太网供电设备的当前工作状态只可能为普 通状态和过载状态中的一种。
在以太网供电设备的当前工作状态为普通状态的情况下, 则确定以太网供电设备为 新的以太网受电设备供电。 可替换的, 在以太网供电设备的当前工作状态为普通状态的 情况下, 如果以太网供电设备的已用功率加上新的以太网受电设备的功率需求小于以太 网供电设备的最大输出功率, 贝輔定以太网供电设备为新的以太网受电设备供电。
在以太网供电设备的当前工作状态为高载状态的情况下, 如果新的以太网受电设备 的供电优先级大于受到以太网供电设备供电的以太网受电设备中供电优先级最低的以 太网受电设备的供电优先级, 确定以太网供电设备为所述新的以太网受电设备供电, 并 且确定所述以太网供电设备停止对以太网受电设备中供电优先级最低的以太网受电设 备供电。
在以太网供电设备的当前工作状态为过载状态的情况下,确定以太网供电设备不为 新的以太网受电设备供电。 可选的, 进一步的, 在以太网供电设备的当前工作状态为过 载状态的情况下,确定以太网供电设备停止对受到以太网供电设备供电的以太网受电设 备中供电优先级最低的以太网受电设备供电。停止对受到以太网供电设备供电的以太网 受电设备中供电优先级最低的以太网受电设备供电的步骤被以太网供电设备执行之后, 如果以太网供电设备的当前工作状态保持为过载状态, 则重复上述步骤, 即确定以太网 供电设备停止对当前的受到以太网供电设备供电的以太网受电设备中供电优先级最低 的以太网受电设备供电。停止对受到以太网供电设备供电的以太网受电设备中供电优先 级最低的以太网受电设备供电的步骤执行之后, 如果以太网供电设备的当前工作状态变 为普通状态或者高载状态, 则按照上述当前工作状态为普通状态或者高载状态的方法确 定以太网供电设备是否为新的以太网受电设备供电。 可选的, 进一步的, 在以太网供电 设备的当前工作状态为过载状态的情况下,停止对受到以太网供电设备供电的以太网受 电设备中供电优先级最低的以太网受电设备供电后, 禁止再次为该供电优先级最低的以 太网受电设备供电。采用该禁止再次为该供电优先级最低的以太网受电设备供电的方案 可以在某些具体的实现中防止以太网供电设备的当前工作状态的震荡。 例如, 第一功率 门限的值等于以太网供电设备的最大输出功率的值, 以太网供电设备的当前工作状态只 可能为普通状态和过载状态中的一种。或者第一功率门限的值与以太网供电设备的最大 输出功率的值较为接近, 单个以太网受电设备可能使太网供电设备的当前工作状态从普 通状态变为过载状态。 如果在以太网供电设备的当前工作状态为普通状态的情况下, 不 考虑新的以太网受电设备的功率需求就确定以太网供电设备为新的以太网受电设备供 电, 则以太网供电设备的当前工作状态可能在普通状态和过载状态间震荡。 禁止再次为 供电优先级最低的以太网受电设备供电, 可以阻止该震荡。 具体的禁止再次为供电优先 级最低的以太网受电设备供电的方案可以有若干不同实现, 如一旦确定停止对一个以太 网受电设备供电, 则禁止再次为该以太网受电设备供电; 或者检测到以太网供电设备的 当前工作状态在预设时间段内变化的次数超过预设值的情况下, 禁止再次为供电优先级 最低的以太网受电设备供电; 又或者对同一个以太网受电设备停止供电的次数达到预设 值的情况下, 禁止再次为该以太网受电设备供电。
可选的, 如果以太网供电设备的已用功率大于预设的第二功率门限, 则以太网供电 装置发出告警。 例如, 发出声音或光线形式的告警, 或者根据预设的移动电话号码以短 信的形式, 或根据预设的电子邮件地址以电子邮件的形式, 向以太网供电设备的使用者 告警。该第二功率门限的值大于等于第一功率门限的值并小于等于太网供电设备的最大 输出功率的值。
连接到以太网供电设备的以太网受电设备可以不全是受到以太网供电设备供电的 以太网受电设备。 如果以太网供电设备的供电模式发生变化, 则将连接到以太网供电设 备的以太网受电设备中未受到以太网供电设备供电的以太网受电设备作为新的以太网 受电设备, 按照上述流程确定是否为这些以太网受电设备供电。 如果连接到以太网供电 设备的以太网受电设备中未受到以太网供电设备的数量大于 1, 则将其中供电优先级最 高的以太网受电设备作为新的以太网受电设备, 按照上述流程确定是否为这些以太网受 电设备供电。 举例来说, 连接到以太网供电设备的以太网受电设备共有 5个, 以太网供 电设备为其中 3个以太网受电设备供电。 以太网供电设备的供电模式为第二供电模式。 受到以太网供电设备供电的 3个以太网受电设备中的一个为大功率以太网受电设备。 该 受到以太网供电设备供电的大功率以太网受电设备的供电优先级为严重。未受到以太网 供电设备供电的 2个以太网受电设备都是小功率以太网受电设备,这 2个小功率以太网受 电设备的供电优先级分别为高和低。 由于以太网供电设备的当前工作状态为高载状态, 确定以太网供电设备不为这 2个小功率以太网受电设备供电。 以太网供电设备的供电模 式从第二供电模式变为第一供电模式, 则大功率以太网受电设备的供电优先级变为非常 低。 2个未受到以太网供电设备供电的小功率以太网受电设备的供电优先级还是分别为 高和低。 这 2个小功率以太网受电设备被作为新的以太网受电设备, 由于以太网供电设 备的当前工作状态为高载状态,供电优先级为高的小功率以太网受电设备的供电优先级 大于受到以太网供电设备供电的以太网受电设备中供电优先级最低的以太网受电设备, 即上述大功率以太网受电设备, 的供电优先级, 确定以太网供电设备为供电优先级为高 的小功率以太网受电设备供电, 并且确定以太网供电设备停止对上述大功率以太网受电 设备供电。 由于停止对上述大功率以太网受电设备供电, 以太网供电设备的当前工作状 态变为普通状态, 确定以太网供电设备为供电优先级为低的小功率以太网受电设备供 电。 如果在为供电优先级为低的小功率以太网受电设备供电后, 以太网供电设备的当前 工作状态变为高载状态, 由于大功率以太网受电设备的供电优先级为非常低, 小于受到 以太网供电设备供电的以太网受电设备中供电优先级最低的以太网受电设备的供电优 先级, 确定以太网供电设备不为大功率以太网受电设备供电。 如果在为供电优先级为低 的小功率以太网受电设备供电后, 以太网供电设备的当前工作状态保持普通状态, 如果 以太网供电设备的已用功率加上该大功率以太网受电设备的功率需求小于以太网供电 设备的最大输出功率, 则确定以太网供电设备为该大功率以太网受电设备供电。
图 2为本发明实施例的以太网供电装置示意图。该以太网供电装置包括设置模块 202 和确定模块 204。 以太网供电装置可以由独立的装置, 例如一台与太网供电设备相连的 服务器实现, 或者以太网供电装置可以整合在以太网供电设备中, 由以太网供电设备实 现该以太网供电装置。 本发明实施例中的以太网供电设备是 PSE, 具体的, 可以是支持 PoE的网络交换机或者路由器。 其中,
设置模块 202, 用于在以太网供电设备的供电模式是第一供电模式的情况下, 将受 到以太网供电设备供电的大功率以太网受电设备的供电优先级设置为最低优先级,所述 大功率以太网受电设备是功率需求大于设置值的以太网受电设备。
本发明实施例中的以太网受电设备是 PD,具体的,可以是支持 PoE的 IP camera , Vo IP hone , 无线 AP, NAS或者瘦客户端。 受到以太网供电设备供电的以太网受电设备是指该 以太网受电设备通过以太网线与以太网供电设备相连, 并且以太网供电设备已经为该以 太网受电设备供电的设备。受到以太网供电设备供电的以太网受电设备的数量可以是一 个或多个。 本发明实施例中, 将功率需求大于设置值, 例如 30W, 的以太网受电设备称 为大功率以太网受电设备,将功率需求小于等于设置值的以太网受电设备称为小功率以 太网受电设备。
在以太网供电设备的供电模式是第一供电模式的情况下, 以太网供电设备优先为小 功率以太网受电设备供电,在满足小功率以太网受电设备的供电需求后才对大功率以太 网受电设备供电。 为此, 在以太网供电设备的供电模式是第一供电模式的情况下, 设置 模块 202将大功率以太网受电设备的供电优先级设置为最低优先级。 最低优先级是指设 置模块 202可以为以太网受电设备设置的所有优先级中最低的一个优先级, 该最低优先 级可以低于可以为小功率以太网受电设备设置的所有优先级中最低的一个, 也可以和可 以为小功率以太网受电设备设置的所有优先级中最低的一个优先级相同。 举例来说, 设 置模块 202为可小功率以太网受电设备设置的供电优先级为严重, 高, 低中的一种, 而 大功率以太网受电设备的供电优先级被设置为非常低,其中供电优先级的顺序由高到低 依次为严重, 高, 低和非常低。 另一个例子中, 设置模块 202可为小功率以太网受电设 备设置的供电优先级为严重, 高, 低中的一种, 而大功率以太网受电设备的供电优先级 被设置为低, 其中供电优先级的顺序由高到低依次为严重, 高和低。 以太网供电设备优 先为供电优先级较高的以太网受电设备供电。 设置模块 202按照预设的策略设置小功率 以太网受电设备的供电优先级。这里的预设的策略与下述在以太网供电设备的供电模式 是第二供电模式的情况下设置模块 202用的预设的策略, 可以是相同的, 也可以是不同 的。 以下按照这里的预设的策略与下述在以太网供电设备的供电模式是第二供电模式的 情况下用的预设的策略是相同的情况来描述。
设置模块 202,还用于在所述以太网供电设备的供电模式是第二供电模式的情况下, 按照预设的策略设置所述大功率以太网受电设备的供电优先级,所述预设的策略与功率 需求无关。
在以太网供电设备的供电模式是第二供电模式的情况下, 以太网供电设备不区分小 功率以太网受电设备和大功率以太网受电设备供电, 设置模块 202按照与功率需求无关 的预设的策略设置所有以太网受电设备的供电优先级。 举例来说, 与功率需求无关的预 设的策略可以是按照时间顺序, 先连接到以太网供电设备的以太网受电设备的优先级 高, 或者后连接到以太网供电设备的以太网受电设备的优先级高。 又如, 根据以太网受 电设备连接的以太网供电设备的以太网端口被预先设置的优先级, 设置以太网受电设备 的供电优先级, 举例来说, 以太网供电设备包括 8个以太网端口, 分别为端口 1至端口 8, 与端口 1, 端口 4, 端口 5连接的以太网受电设备的供电优先级为严重, 与端口 2, 端口 3, 端口 8连接的以太网受电设备的供电优先级为高, 与端口 6, 端口 7连接的以太网受电设 备的供电优先级为低。 又如, 连接到以太网供电设备的以太网端口的编号较小的以太网 受电设备的优先级高。
以太网供电设备的供电模式由以太网供电设备的使用者设置。 例如, 以太网供电设 备的使用者希望以太网供电设备优先对小功率以太网受电设备供电, 则设置以太网供电 设备的供电模式为第一供电模式; 以太网供电设备的使用者希望以太网供电设备仅以与 功率需求无关的策略供电, 则设置以太网供电设备的供电模式为第二供电模式。
供电模式可以通过软件方式设置, 例如通过以太网供电装置的控制台设置, 或通过 硬件方式设置, 例如通过供电模式切换键设置。 供电模式切换键用于将所述以太网供电 设备的供电模式从第一供电模式切换到第二供电模式, 以及将所述以太网供电设备的供 电模式从第二供电模式切换到第一供电模式。
设置模块 202, 还用于在新的以太网受电设备连接到所述以太网供电设备时, 根据 所述以太网供电设备的供电模式和所述新的以太网受电设备的功率需求确定所述新的 以太网受电设备的供电优先级。
在以太网供电设备的供电模式是第一供电模式的情况下, 如果新的以太网受电设备 是大功率以太网受电设备, 设置模块 202将该新的以太网受电设备的供电优先级设置为 最低优先级。 如果新的以太网受电设备是小功率以太网受电设备, 设置模块 202按照预 设的策略设置该新的以太网受电设备的供电优先级。在以太网供电设备的供电模式是第 二供电模式的情况下, 设置模块 202按照预设的策略设置该新的以太网受电设备的供电 优先级。
确定模块 204, 用于根据以太网供电设备的已用功率, 受到以太网供电设备供电的 以太网受电设备的供电优先级, 所述新的以太网受电设备的供电优先级, 以及以太网供 电设备的最大输出功率, 确定所述以太网供电设备是否为所述新的以太网受电设备供 电。
以太网供电设备的已用功率为以太网供电设备测量得到的, 当前为所有以太网受电 设备实际供电的功率之和。 以太网供电设备可以分别测量为各个以太网受电设备供电的 功率, 并对上述各个功率求和得到以太网供电设备的已用功率。 以太网供电设备也可以 直接测量为以太网受电设备供电的总功率。 以太网供电设备也可以测量为各个以太网受 电设备供电的电流, 对上述各个以太网受电设备供电的电流求和后, 再乘以以太网供电 设备为以太网受电设备供电所提供的电压, 得到以太网供电设备的已用功率。 如果以太 网供电装置由独立的装置实现, 确定模块 204从以太网供电设备获取该以太网供电设备 测量得到的的已用功率。 可选的, 确定模块 204可以用所有受到以太网供电设备供电的 以太网受电设备的功率需求之和作为以太网供电设备的已用功率的近似值, 而不做实际 以太网供电设备的最大输出功率是预先设置的, 以太网供电设备能够为以太网受电 设备供电的功率的最大值。
具体的, 确定模块 204根据以太网供电设备的最大输出功率, 预设的第一功率门限 和以太网供电设备的已用功率, 获取以太网供电设备的当前工作状态。 以太网供电设备 的当前工作状态可以为普通状态, 高载状态和过载状态中的一种。 例如, 以太网供电设 备的已用功率小于等于第一功率门限, 则以太网供电设备的当前工作状态为普通状态; 以太网供电设备的已用功率大于于第一功率门限并小于等于以太网供电设备的最大输 出功率, 则以太网供电设备的当前工作状态为高载状态; 以太网供电设备的已用功率大 于以太网供电设备的最大输出功率, 则以太网供电设备的当前工作状态为过载状态。 其 中, 第一功率门限的值小于等于以太网供电设备的最大输出功率的值。 其中, 如果第一 功率门限的值等于以太网供电设备的最大输出功率的值, 则以太网供电设备的当前工作 状态只可能为普通状态和过载状态中的一种。
在以太网供电设备的当前工作状态为普通状态的情况下, 确定模块 204确定以太网 供电设备为新的以太网受电设备供电。 可替换的, 在以太网供电设备的当前工作状态为 普通状态的情况下, 如果以太网供电设备的已用功率加上新的以太网受电设备的功率需 求小于以太网供电设备的最大输出功率, 确定模块 204确定以太网供电设备为新的以太 网受电设备供电。
在以太网供电设备的当前工作状态为高载状态的情况下, 如果新的以太网受电设备 的供电优先级大于受到以太网供电设备供电的以太网受电设备中供电优先级最低的以 太网受电设备的供电优先级, 确定模块 204确定以太网供电设备为所述新的以太网受电 设备供电, 并且确定所述以太网供电设备停止对以太网受电设备中供电优先级最低的以 太网受电设备供电。
在以太网供电设备的当前工作状态为过载状态的情况下, 确定模块 204确定以太网 供电设备不为新的以太网受电设备供电。 可选的, 进一步的, 在以太网供电设备的当前 工作状态为过载状态的情况下, 确定模块 204确定以太网供电设备停止对受到以太网供 电设备供电的以太网受电设备中供电优先级最低的以太网受电设备供电。停止对受到以 太网供电设备供电的以太网受电设备中供电优先级最低的以太网受电设备供电的步骤 被以太网供电设备执行之后, 如果以太网供电设备的当前工作状态保持为过载状态, 则 确定模块 204重复上述步骤, 即确定以太网供电设备停止对当前的受到以太网供电设备 供电的以太网受电设备中供电优先级最低的以太网受电设备供电。停止对受到以太网供 电设备供电的以太网受电设备中供电优先级最低的以太网受电设备供电的步骤执行之 后, 如果以太网供电设备的当前工作状态变为普通状态或者高载状态, 则确定模块 204 按照上述当前工作状态为普通状态或者高载状态的方法确定以太网供电设备是否为新 的以太网受电设备供电。 可选的, 进一步的, 在以太网供电设备的当前工作状态为过载 状态的情况下, 确定模块 204确定停止对受到以太网供电设备供电的以太网受电设备中 供电优先级最低的以太网受电设备供电后, 禁止再次为该供电优先级最低的以太网受电 设备供电。采用该禁止再次为该供电优先级最低的以太网受电设备供电的方案可以在某 些具体的实现中防止以太网供电设备的当前工作状态的震荡。 例如, 第一功率门限的值 等于以太网供电设备的最大输出功率的值, 以太网供电设备的当前工作状态只可能为普 通状态和过载状态中的一种。或者第一功率门限的值与以太网供电设备的最大输出功率 的值较为接近, 单个以太网受电设备可能使太网供电设备的当前工作状态从普通状态变 为过载状态。 如果在以太网供电设备的当前工作状态为普通状态的情况下, 不考虑新的 以太网受电设备的功率需求就确定以太网供电设备为新的以太网受电设备供电, 则以太 网供电设备的当前工作状态可能在普通状态和过载状态间震荡。禁止再次为供电优先级 最低的以太网受电设备供电, 可以阻止该震荡。 具体的禁止再次为供电优先级最低的以 太网受电设备供电的方案可以有若干不同实现, 如一旦确定模块 204确定停止对一个以 太网受电设备供电, 则禁止再次为该以太网受电设备供电; 或者确定模块 204检测到以 太网供电设备的当前工作状态在预设时间段内变化的次数超过预设值的情况下, 禁止再 次为供电优先级最低的以太网受电设备供电; 又或者对同一个以太网受电设备停止供电 的次数达到预设值的情况下, 确定模块 204确定禁止再次为该以太网受电设备供电。
可选的,如果以太网供电设备的已用功率大于预设的第二功率门限,则确定模块 204 发出告警。 例如, 发出声音或光线形式的告警, 或者根据预设的移动电话号码以短信的 形式,或根据预设的电子邮件地址以电子邮件的形式,向以太网供电设备的使用者告警。 该第二功率门限的值大于等于第一功率门限的值并小于等于太网供电设备的最大输出 功率的值。
连接到以太网供电设备的以太网受电设备可以不全是受到以太网供电设备供电的 以太网受电设备。 如果以太网供电设备的供电模式发生变化, 则确定模块 204将连接到 以太网供电设备的以太网受电设备中未受到以太网供电设备供电的以太网受电设备作 为新的以太网受电设备, 按照上述流程确定是否为这些以太网受电设备供电。 如果连接 到以太网供电设备的以太网受电设备中未受到以太网供电设备的数量大于 1, 则确定模 块 204将其中供电优先级最高的以太网受电设备作为新的以太网受电设备, 按照上述流 程确定是否为这些以太网受电设备供电。 举例来说, 连接到以太网供电设备的以太网受 电设备共有 5个, 以太网供电设备为其中 3个以太网受电设备供电。 以太网供电设备的供 电模式为第二供电模式。 受到以太网供电设备供电的 3个以太网受电设备中的一个为大 功率以太网受电设备。该受到以太网供电设备供电的大功率以太网受电设备的供电优先 级为严重。 未受到以太网供电设备供电的 2个以太网受电设备都是小功率以太网受电设 备, 这 2个小功率以太网受电设备的供电优先级分别为高和低。 由于以太网供电设备的 当前工作状态为高载状态,确定以太网供电设备不为这 2个小功率以太网受电设备供电。 以太网供电设备的供电模式从第二供电模式变为第一供电模式, 则大功率以太网受电设 备的供电优先级变为非常低。 2个未受到以太网供电设备供电的小功率以太网受电设备 的供电优先级还是分别为高和低。 这 2个小功率以太网受电设备被作为新的以太网受电 设备, 由于以太网供电设备的当前工作状态为高载状态, 供电优先级为高的小功率以太 网受电设备的供电优先级大于受到以太网供电设备供电的以太网受电设备中供电优先 级最低的以太网受电设备, 即上述大功率以太网受电设备, 的供电优先级,确定模块 204 确定以太网供电设备为供电优先级为高的小功率以太网受电设备供电, 并且确定以太网 供电设备停止对上述大功率以太网受电设备供电。 由于停止对上述大功率以太网受电设 备供电, 以太网供电设备的当前工作状态变为普通状态, 确定模块 204确定以太网供电 设备为供电优先级为低的小功率以太网受电设备供电。如果在为供电优先级为低的小功 率以太网受电设备供电后, 以太网供电设备的当前工作状态变为高载状态, 由于大功率 以太网受电设备的供电优先级为非常低, 小于受到以太网供电设备供电的以太网受电设 备中供电优先级最低的以太网受电设备的供电优先级, 确定模块 204确定以太网供电设 备不为大功率以太网受电设备供电。如果在为供电优先级为低的小功率以太网受电设备 供电后, 以太网供电设备的当前工作状态保持普通状态, 如果以太网供电设备的已用功 率加上该大功率以太网受电设备的功率需求小于以太网供电设备的最大输出功率, 则确 定模块 204确定以太网供电设备为该大功率以太网受电设备供电。
图 3为本发明实施例的以太网供电设备示意图。 该以太网供电设备包括以太网端口 302, 供电电路 304, 处理器 306。 本发明实施例中的以太网供电设备是 PSE, 具体的, 可 以是支持 PoE的网络交换机或者路由器。 其中,
所述供电电路 304与所述以太网端口 302相连。所述供电电路 304与所述处理器 306相 连。 图 3中粗线为总线 (英文: bus ) 。 以太网受电设备通过以太网端口 302与该以太网供电设备相连, 该以太网受电设备 和该以太网供电设备组成了以太网供电系统。
处理器 306可以为专用集成电路 (英文: appl ication-specific integrated circuit,缩写: ASIC) ,现场可编程逻辑门阵列(英文: field-programmable gate array, 缩写: FPGA) , 复杂可编程逻辑器件 (英文: complex programmable logic device , 缩写: CPLD) , 中央处理器 (英文: central processing unit, 缩写: CPU) 或网络处 理器 (英文: network processor, 缩写: NP) 。 处理器执行以下操作。
在处理器 306是 CPU或 NP的情况下, 该以太网供电设备还包括存储器。 存储器可以是 易失性存储器(英文: vo la t i le memory), 例如随机存取存储器(英文: random-acces s memory, 缩写: RAM) , 或者非易失性存储器 (英文: non-vo la t i le memory) , 例如只 读存储器(英文: read-only memory, 缩写: ROM) , 快闪存储器(英文: f lash memory), 硬盘 (英文: hard di sk dr ive, 缩写: HDD) 或固态硬盘 (英文: so l id-s ta te dr ive, 缩写: SSD) 。 处理器与存储器 308相连。 处理器 306根据存储器存储的程序指令, 执行 以下操作。
以太网供电设备通过 PoE的分级 (英文: classification ) 获取通过所述以太网端 口 302与所述以太网供电设备连接的以太网受电设备的功率需求。 具体的, 如果以数据 链路层分级 (英文: Data Link Layer classification) 确定以太网受电设备的功率需 求, 分级可以由处理器 306完成。 可选的, 以太网供电设备还可以包括功率需求测试电 路。 所述功率需求测试电路与所述以太网端口 302相连。 所述功率需求测试电路与所述 处理器 306相连。 该功率需求测试电路, 通过 PoE的分级, 例如物理层 (英文: Physical Layer classification ) 分级或数据链路层分级, 确定通过所述以太网端口 302与所述 以太网供电设备连接的以太网受电设备的功率需求。功率需求测试电路将以太网受电设 备的功率需求通知处理器。 其中, 物理层分级是, 功率需求测试电路在以太网端口 302 加一个分级电压, 测量分级电流, 以确定以太网受电设备的功率需求。 数据链路层分级 是, 在数据链路 (英文: data l ink) 被建立后, 以太网供电设备与以太网受电设备用 数据链路层协议 (英文: Data Link Layer Protocol ) 通信以确定以太网受电设备的功 率需求。
在以太网供电设备的供电模式是第一供电模式的情况下, 所述处理器 306将受到以 太网供电设备供电的大功率以太网受电设备的供电优先级设置为最低优先级,所述大功 率以太网受电设备是功率需求大于设置值的以太网受电设备。 本发明实施例中的以太网受电设备是 PD,具体的,可以是支持 PoE的 IP camera , VoIP hone, 无线 AP, NAS或者瘦客户端。 受到以太网供电设备供电的以太网受电设备是指该 以太网受电设备通过以太网线与以太网供电设备通过以太网端口 302相连, 并且以太网 供电设备已经为该以太网受电设备供电的设备。受到以太网供电设备供电的以太网受电 设备的数量可以是一个或多个。 本发明实施例中, 将功率需求大于设置值, 例如 30W, 的以太网受电设备称为大功率以太网受电设备,将功率需求小于等于设置值的以太网受 电设备称为小功率以太网受电设备。
在以太网供电设备的供电模式是第一供电模式的情况下, 以太网供电设备优先为小 功率以太网受电设备供电,在满足小功率以太网受电设备的供电需求后才对大功率以太 网受电设备供电。 为此, 在以太网供电设备的供电模式是第一供电模式的情况下, 处理 器 306将大功率以太网受电设备的供电优先级设置为最低优先级。 最低优先级是指可以 为以太网受电设备设置的所有优先级中最低的一个优先级, 该最低优先级可以低于可以 为小功率以太网受电设备设置的所有优先级中最低的一个, 也可以和可以为小功率以太 网受电设备设置的所有优先级中最低的一个优先级相同。 举例来说, 小功率以太网受电 设备的可设置的供电优先级为严重, 高, 低中的一种, 而大功率以太网受电设备的供电 优先级被设置为非常低,其中供电优先级的顺序由高到低依次为严重,高,低和非常低。 另一个例子中,小功率以太网受电设备的可设置的供电优先级为严重,高,低中的一种, 而大功率以太网受电设备的供电优先级被设置为低,其中供电优先级的顺序由高到低依 次为严重, 高和低。 以太网供电设备优先为供电优先级较高的以太网受电设备供电。 处 理器 306按照预设的策略设置小功率以太网受电设备的供电优先级。 这里的预设的策略 与下述在以太网供电设备的供电模式是第二供电模式的情况下用的预设的策略,可以是 相同的, 也可以是不同的。 以下按照这里的预设的策略与下述在以太网供电设备的供电 模式是第二供电模式的情况下用的预设的策略是相同的情况来描述。
在所述以太网供电设备的供电模式是第二供电模式的情况下, 所述处理器 306按照 预设的策略设置所述大功率以太网受电设备的供电优先级,所述预设的策略与功率需求 无关。
在以太网供电设备的供电模式是第二供电模式的情况下, 以太网供电设备不区分小 功率以太网受电设备和大功率以太网受电设备供电, 处理器 306按照与功率需求无关的 预设的策略设置所有以太网受电设备的供电优先级。 举例来说, 与功率需求无关的预设 的策略可以是按照时间顺序, 先连接到以太网供电设备的以太网受电设备的优先级高, 或者后连接到以太网供电设备的以太网受电设备的优先级高。 又如, 处理器 306根据以 太网受电设备连接的以太网供电设备的以太网端口 302被预先设置的优先级, 设置以太 网受电设备的供电优先级。 举例来说, 以太网供电设备包括 8个以太网端口 302, 分别为 端口 1至端口 8, 与端口 1, 端口 4, 端口 5连接的以太网受电设备的供电优先级为严重, 与端口 2, 端口 3, 端口 8连接的以太网受电设备的供电优先级为高, 与端口 6, 端口 7连 接的以太网受电设备的供电优先级为低。又如,连接到以太网供电设备的以太网端口 302 的编号较小的以太网受电设备的优先级高。
以太网供电设备的供电模式由以太网供电设备的使用者设置。 例如, 以太网供电设 备的使用者希望以太网供电设备优先对小功率以太网受电设备供电, 则设置以太网供电 设备的供电模式为第一供电模式; 以太网供电设备的使用者希望以太网供电设备仅以与 功率需求无关的策略供电, 则设置以太网供电设备的供电模式为第二供电模式。
供电模式可以通过软件方式设置,例如以太网供电设备的使用者通过软件接口设置 供电模式, 使处理器 306可以获取以太网供电设备的供电模式。 供电模式也可以通过硬 件方式设置, 例如通过供电模式切换键设置。 在供电模式通过供电模式切换键设置的情 况下, 该以太网供电设备还包括供电模式切换键。 所述供电模式切换键与所述处理器相 连。 供电模式切换键可以被设置在以太网供电设备的面板上, 具体的物理形式可以是按 钮或开关。所述供电模式切换键用于将所述以太网供电设备的供电模式从第一供电模式 切换到第二供电模式, 以及将所述以太网供电设备的供电模式从第二供电模式切换到第 一供电模式。 供电模式切换键可以与处理器的第一引脚相连, 供电模式切换键在以太网 供电设备的供电模式不同时输出不同的电平,例如在供电模式为第一供电模式时供电模 式切换键输出高电平, 在供电模式为第二供电模式时供电模式切换键输出低电平。 处理 器 306根据第一引脚的电平确定以太网供电设备当前的供电模式。 图 3以供电模式通过供 电模式切换键设置, 并且供电模式切换键与处理器的第一引脚相连, 为例进行描述。 供 电模式切换键也可以通过总线与处理器 306相连。在以太网供电设备的供电模式变化时, 供电模式切换键输出预设的编码, 处理器 306根据接收到的编码确定以太网供电设备当 前的模式。
新的以太网受电设备通过以太网端口 302连接到所述以太网供电设备时, 所述功率 需求测试电路确定所述新的以太网受电设备的功率需求。
所述处理器 306根据所述以太网供电设备的供电模式和所述新的以太网受电设备的 功率需求确定所述新的以太网受电设备的供电优先级。 在以太网供电设备的供电模式是第一供电模式的情况下, 如果新的以太网受电设备 是大功率以太网受电设备, 处理器 306将该新的以太网受电设备的供电优先级设置为最 低优先级。 如果新的以太网受电设备是小功率以太网受电设备, 处理器 306按照预设的 策略设置该新的以太网受电设备的供电优先级。在以太网供电设备的供电模式是第二供 电模式的情况下, 处理器 306按照预设的策略设置该新的以太网受电设备的供电优先级。
处理器 306根据以太网供电设备的已用功率, 受到以太网供电设备供电的以太网受 电设备的供电优先级, 所述新的以太网受电设备的供电优先级, 以及以太网供电设备的 最大输出功率, 确定供电电路 304是否为所述新的以太网受电设备供电。
可以用所有受到以太网供电设备供电的以太网受电设备的功率需求之和作为以太 网供电设备的已用功率的近似值, 而不做实际测量。 可选的, 以太网供电设备的已用功 率为以太网供电设备测量得到的, 当前为所有以太网受电设备实际供电的功率之和。 在 以太网供电设备的已用功率为测量得到的情况下, 以太网供电设备还包括功率测量器 件, 该功率测量器件与处理器 306相连。 可选的, 该功率测量器件可以分别与各个以太 网端口 302相连, 该功率测量器件分别测量各个以太网端口 302供电的功率, 具体的, 该 功率测量器件测量以太网端口 302通过的电流, 以及该以太网端口 302提供的电压, 根据 上述电流和电压得到该以太网端口 302供电的功率。对各个以太网端口 302供电的功率求 和得到以太网供电设备的已用功率。 该功率测量器件也可以测量供电电路 304供电的功 率。 具体的, 该功率测量器件测量供电电路 304输出的电流, 以及该供电电路 304输出的 电压, 根据上述电流和电压得到供电电路 304供电的功率, 作为以太网供电设备的已用 功率。 该功率测量器件也可以测量为各个以太网端口 302通过的电流, 并且测量供电电 路 304输出的电压。 对上述各个以太网端口 302通过的电流求和后, 再乘以供电电路 304 输出的电压, 得到以太网供电设备的已用功率。 图 3中仅以最后一种实现方式为例划出 示意图, 图中的 "+ "和 "-"分别表示正极和负极, "V"表示电压测量端, " I "表示 电流测量端。
以太网供电设备的最大输出功率是预先设置的, 以太网供电设备能够为以太网受电 设备供电的功率的最大值。
具体的, 处理器 306根据以太网供电设备的最大输出功率, 预设的第一功率门限和 以太网供电设备的已用功率, 获取以太网供电设备的当前工作状态。 以太网供电设备的 当前工作状态可以为普通状态, 高载状态和过载状态中的一种。 例如, 以太网供电设备 的已用功率小于等于第一功率门限, 则以太网供电设备的当前工作状态为普通状态; 以 太网供电设备的已用功率大于于第一功率门限并小于等于以太网供电设备的最大输出 功率, 则以太网供电设备的当前工作状态为高载状态; 以太网供电设备的已用功率大于 以太网供电设备的最大输出功率,则以太网供电设备的当前工作状态为过载状态。其中, 第一功率门限的值小于等于以太网供电设备的最大输出功率的值。 其中, 如果第一功率 门限的值等于以太网供电设备的最大输出功率的值, 则以太网供电设备的当前工作状态 只可能为普通状态和过载状态中的一种。
在以太网供电设备的当前工作状态为普通状态的情况下, 处理器 306确定供电电路 304为新的以太网受电设备供电。 具体的, 供电电路 304通过以太网端口 302为新的以太 网受电设备供电。 可替换的, 在以太网供电设备的当前工作状态为普通状态的情况下, 如果以太网供电设备的已用功率加上新的以太网受电设备的功率需求小于以太网供电 设备的最大输出功率, 则处理器 306确定供电电路 304为新的以太网受电设备供电。
在以太网供电设备的当前工作状态为高载状态的情况下, 如果新的以太网受电设备 的供电优先级大于受到以太网供电设备供电的以太网受电设备中供电优先级最低的以 太网受电设备的供电优先级, 处理器 306确定供电电路 304通过以太网端口 302为所述新 的以太网受电设备供电, 并且处理器 306确定供电电路 304停止对以太网受电设备中供电 优先级最低的以太网受电设备供电。
在以太网供电设备的当前工作状态为过载状态的情况下, 处理器 306确定供电电路 304不为新的以太网受电设备供电。 可选的, 进一步的, 在以太网供电设备的当前工作 状态为过载状态的情况下, 处理器 306确定供电电路 304停止对受到以太网供电设备供电 的以太网受电设备中供电优先级最低的以太网受电设备供电。停止对受到以太网供电设 备供电的以太网受电设备中供电优先级最低的以太网受电设备供电的步骤被供电电路 304执行之后, 如果以太网供电设备的当前工作状态保持为过载状态, 则处理器 306重复 上述步骤, 即确定以太网供电设备停止对当前的受到以太网供电设备供电的以太网受电 设备中供电优先级最低的以太网受电设备供电。 供电电路 304停止对受到以太网供电设 备供电的以太网受电设备中供电优先级最低的以太网受电设备供电的步骤执行之后, 如 果以太网供电设备的当前工作状态变为普通状态或者高载状态, 则处理器 306按照上述 当前工作状态为普通状态或者高载状态的方法确定以太网供电设备是否为新的以太网 受电设备供电。 可选的, 进一步的, 在以太网供电设备的当前工作状态为过载状态的情 况下, 供电电路 304停止对受到以太网供电设备供电的以太网受电设备中供电优先级最 低的以太网受电设备供电后, 处理器 306禁止供电电路 304再次为该供电优先级最低的以 太网受电设备供电。采用该禁止再次为该供电优先级最低的以太网受电设备供电的方案 可以在某些具体的实现中防止以太网供电设备的当前工作状态的震荡。 例如, 第一功率 门限的值等于以太网供电设备的最大输出功率的值, 以太网供电设备的当前工作状态只 可能为普通状态和过载状态中的一种。或者第一功率门限的值与以太网供电设备的最大 输出功率的值较为接近, 单个以太网受电设备可能使太网供电设备的当前工作状态从普 通状态变为过载状态。 如果在以太网供电设备的当前工作状态为普通状态的情况下, 不 考虑新的以太网受电设备的功率需求就确定以太网供电设备为新的以太网受电设备供 电, 则以太网供电设备的当前工作状态可能在普通状态和过载状态间震荡。 禁止再次为 供电优先级最低的以太网受电设备供电, 可以阻止该震荡。 具体的禁止再次为供电优先 级最低的以太网受电设备供电的方案可以有若干不同实现, 如处理器 306—旦确定停止 对一个以太网受电设备供电, 则供电电路 304禁止再次为该以太网受电设备供电; 或者 处理器 306检测到以太网供电设备的当前工作状态在预设时间段内变化的次数超过预设 值的情况下, 禁止供电电路 304再次为供电优先级最低的以太网受电设备供电; 又或者 供电电路 304对同一个以太网受电设备停止供电的次数达到预设值的情况下, 处理器 306 禁止供电电路 304再次为该以太网受电设备供电。上述禁止供电电路 304再次为以太网受 电设备供电,可以具体为处理器 306不再向供电电路 304发出为该受禁止的以太网受电设 备供电的指示, 也可以具体为处理器 306向供电电路 304发出禁止为以太网受电设备供电 的指示。
可选的, 如果以太网供电设备的已用功率大于预设的第二功率门限, 则处理器 306 发出告警。 例如, 处理器 306指示以太网供电设备的扬声器发出声音形式的告警, 或处 理器 306指示以太网供电设备的指示灯或显示器发出光线形式的告警, 或者处理器 306根 据预设的移动电话号码以短信的形式, 或根据预设的电子邮件地址以电子邮件的形式, 向以太网供电设备的使用者告警。该第二功率门限的值大于等于第一功率门限的值并小 于等于太网供电设备的最大输出功率的值。
连接到以太网供电设备的以太网受电设备可以不全是受到以太网供电设备供电的 以太网受电设备。 如果以太网供电设备的供电模式发生变化, 则将连接到以太网供电设 备的以太网受电设备中未受到以太网供电设备供电的以太网受电设备作为新的以太网 受电设备, 按照上述流程确定是否为这些以太网受电设备供电。 如果连接到以太网供电 设备的以太网受电设备中未受到以太网供电设备的数量大于 1, 则将其中供电优先级最 高的以太网受电设备作为新的以太网受电设备, 按照上述流程确定是否为这些以太网受 电设备供电。 举例来说, 连接到以太网供电设备的以太网受电设备共有 5个, 以太网供 电设备为其中 3个以太网受电设备供电。 以太网供电设备的供电模式为第二供电模式。 受到以太网供电设备供电的 3个以太网受电设备中的一个为大功率以太网受电设备。 该 受到以太网供电设备供电的大功率以太网受电设备的供电优先级为严重。未受到以太网 供电设备供电的 2个以太网受电设备都是小功率以太网受电设备,这 2个小功率以太网受 电设备的供电优先级分别为高和低。 由于以太网供电设备的当前工作状态为高载状态, 确定以太网供电设备不为这 2个小功率以太网受电设备供电。 以太网供电设备的供电模 式从第二供电模式变为第一供电模式, 则大功率以太网受电设备的供电优先级变为非常 低。 2个未受到以太网供电设备供电的小功率以太网受电设备的供电优先级还是分别为 高和低。 这 2个小功率以太网受电设备被作为新的以太网受电设备, 由于以太网供电设 备的当前工作状态为高载状态,供电优先级为高的小功率以太网受电设备的供电优先级 大于受到以太网供电设备供电的以太网受电设备中供电优先级最低的以太网受电设备, 即上述大功率以太网受电设备, 的供电优先级, 确定以太网供电设备为供电优先级为高 的小功率以太网受电设备供电, 并且确定以太网供电设备停止对上述大功率以太网受电 设备供电。 由于停止对上述大功率以太网受电设备供电, 以太网供电设备的当前工作状 态变为普通状态, 确定以太网供电设备为供电优先级为低的小功率以太网受电设备供 电。 如果在为供电优先级为低的小功率以太网受电设备供电后, 以太网供电设备的当前 工作状态变为高载状态, 由于大功率以太网受电设备的供电优先级为非常低, 小于受到 以太网供电设备供电的以太网受电设备中供电优先级最低的以太网受电设备的供电优 先级, 确定以太网供电设备不为大功率以太网受电设备供电。 如果在为供电优先级为低 的小功率以太网受电设备供电后, 以太网供电设备的当前工作状态保持普通状态, 如果 以太网供电设备的已用功率加上该大功率以太网受电设备的功率需求小于以太网供电 设备的最大输出功率, 则确定以太网供电设备为该大功率以太网受电设备供电。
本领域普通技术人员可以理解, 实现上述各方法实施例中的全部或部分步骤是可以 通过程序来指令相关的硬件完成, 相应的程序可以存储于计算机可读存储介质中, 上述 存储介质可以是随机存取存储器, 只读存储器, 快闪存储器, 硬盘, 固态硬盘或光盘等。
以上所述, 仅为本发明较佳的具体实施方式, 但本发明的保护范围并不局限于此, 任何熟悉本技术领域的技术人员在本发明揭露的技术范围内, 可轻易想到的变化或替 换, 都应涵盖在本发明的保护范围之内。 因此, 本发明的保护范围应该以权利要求的保 护范围为准。

Claims

权利要求
1、 一种以太网供电方法, 其特征在于, 包括:
在以太网供电设备的供电模式是第一供电模式的情况下,将受到所述以太网供电设 备供电的大功率以太网受电设备的供电优先级设置为最低优先级,所述大功率以太网受 电设备是功率需求大于设置值的以太网受电设备;
新的以太网受电设备连接到所述以太网供电设备时,根据所述以太网供电设备的供 电模式和所述新的以太网受电设备的功率需求确定所述新的以太网受电设备的供电优 先级;
根据所述以太网供电设备的已用功率, 受到以太网供电设备供电的以太网受电设备 的供电优先级, 所述新的以太网受电设备的供电优先级, 以及所述以太网供电设备的最 大输出功率, 确定所述以太网供电设备是否为所述新的以太网受电设备供电。
2、 根据权利要求 1所述的方法, 其特征在于, 所述确定所述以太网供电设备是否为 所述新的以太网受电设备供电, 包括:
根据所述以太网供电设备的最大输出功率, 预设的第一功率门限和所述以太网供电 设备的已用功率, 获取所述以太网供电设备的当前工作状态;
在所述当前工作状态为高载状态的情况下, 如果所述新的以太网受电设备的供电优 先级大于受到以太网供电设备供电的以太网受电设备中供电优先级最低的以太网受电 设备的供电优先级, 确定所述以太网供电设备为所述新的以太网受电设备供电, 并且确 定所述以太网供电设备停止对所述以太网受电设备中供电优先级最低的以太网受电设 备供电。
3、 根据权利要求 1所述的方法, 其特征在于, 所述确定所述以太网供电设备是否为 所述新的以太网受电设备供电, 包括:
根据所述以太网供电设备的最大输出功率, 预设的第一功率门限和所述以太网供电 设备的已用功率, 获取所述以太网供电设备的当前工作状态;
在所述当前工作状态为过载状态的情况下,确定所述以太网供电设备停止对受到以 太网供电设备供电的以太网受电设备中供电优先级最低的以太网受电设备供电, 并禁止 再次为所述被停止供电的以太网受电设备供电。
4、 一种以太网供电装置, 其特征在于, 包括设置模块和确定模块; 其中, 所述设置模块, 用于在以太网供电设备的供电模式是第一供电模式的情况下, 将受 到所述以太网供电设备供电的大功率以太网受电设备的供电优先级设置为最低优先级, 所述大功率以太网受电设备是功率需求大于设置值的以太网受电设备;
所述设置模块, 还用于在新的以太网受电设备连接到所述以太网供电设备时, 根据 所述以太网供电设备的供电模式和所述新的以太网受电设备的功率需求确定所述新的 以太网受电设备的供电优先级;
所述确定模块, 用于根据所述以太网供电设备的已用功率, 受到以太网供电设备供 电的以太网受电设备的供电优先级, 所述新的以太网受电设备的供电优先级, 以及所述 以太网供电设备的最大输出功率,确定所述以太网供电设备是否为所述新的以太网受电 设备供电。
5、 根据权利要求 4所述的以太网供电装置, 其特征在于,
所述确定模块, 具体用于根据所述以太网供电设备的最大输出功率, 预设的第一功 率门限和所述以太网供电设备的已用功率, 获取所述以太网供电设备的当前工作状态, 在所述当前工作状态为高载状态的情况下, 如果所述新的以太网受电设备的供电优先级 大于受到以太网供电设备供电的以太网受电设备中供电优先级最低的以太网受电设备 的供电优先级, 确定所述以太网供电设备为所述新的以太网受电设备供电, 并且确定所 述以太网供电设备停止对所述以太网受电设备中供电优先级最低的以太网受电设备供 电。
6、 根据权利要求 4所述的以太网供电装置, 其特征在于,
所述确定模块, 具体用于根据所述以太网供电设备的最大输出功率, 预设的第一功 率门限和所述以太网供电设备的已用功率, 获取所述以太网供电设备的当前工作状态, 在所述当前工作状态为过载状态的情况下,确定所述以太网供电设备停止对受到以太网 供电设备供电的以太网受电设备中供电优先级最低的以太网受电设备供电, 并禁止再次 为所述被停止供电的以太网受电设备供电。
7、 一种以太网供电设备, 其特征在于, 包括以太网端口, 供电电路, 处理器; 其 中,
所述供电电路与所述以太网端口相连;
所述供电电路与所述处理器相连;
在以太网供电设备的供电模式是第一供电模式的情况下,所述处理器将受到所述以 太网供电设备供电的大功率以太网受电设备的供电优先级设置为最低优先级,所述大功 率以太网受电设备是功率需求大于设置值的以太网受电设备;
新的以太网受电设备连接到所述以太网供电设备时,所述功率需求测试电路确定所 述新的以太网受电设备的功率需求;
所述处理器根据所述以太网供电设备的供电模式和所述新的以太网受电设备的功 率需求确定所述新的以太网受电设备的供电优先级;
所述处理器根据所述以太网供电设备的已用功率, 受到以太网供电设备供电的以太 网受电设备的供电优先级, 所述新的以太网受电设备的供电优先级, 以及所述以太网供 电设备的最大输出功率, 确定所述供电电路是否为所述新的以太网受电设备供电。
8、 根据权利要求 7所述的以太网供电设备, 其特征在于, 所述以太网供电设备还包 括供电模式切换键;
所述供电模式切换键与所述处理器相连;
所述供电模式切换键用于将所述以太网供电设备的供电模式从第一供电模式切换 到第二供电模式, 以及将所述以太网供电设备的供电模式从第二供电模式切换到第一供 电模式。
9、 根据权利要求 7或 8所述的以太网供电设备, 其特征在于, 所述处理器确定所述 供电电路是否为所述新的以太网受电设备供电, 包括:
所述处理器根据所述以太网供电设备的最大输出功率, 预设的第一功率门限和所述 以太网供电设备的已用功率, 获取所述以太网供电设备的当前工作状态;
在所述当前工作状态为高载状态的情况下, 如果所述新的以太网受电设备的供电优 先级大于受到以太网供电设备供电的以太网受电设备中供电优先级最低的以太网受电 设备的供电优先级, 所述处理器确定所述供电电路为所述新的以太网受电设备供电, 并 且确定所述供电电路停止对所述以太网受电设备中供电优先级最低的以太网受电设备 供电。
10、 根据权利要求 7或 8所述的以太网供电设备, 其特征在于, 所述处理器确定所述 供电电路是否为所述新的以太网受电设备供电, 包括:
所述处理器根据所述以太网供电设备的最大输出功率, 预设的第一功率门限和所述 以太网供电设备的已用功率, 获取所述以太网供电设备的当前工作状态;
在所述当前工作状态为过载状态的情况下,所述处理器确定所述供电电路停止对受 到以太网供电设备供电的以太网受电设备中供电优先级最低的以太网受电设备供电, 并 禁止供电电路再次为所述被停止供电的以太网受电设备供电。
11、 一种以太网供电系统, 包括如权利要求 7至 10中任意一个所述的以太网供电设 备和以太网受电设备,所述以太网受电设备通过所述以太网供电设备的以太网端口与所 述以太网供电设备相连。
PCT/CN2012/087846 2012-12-28 2012-12-28 以太网供电方法、装置、设备和系统 WO2014101110A1 (zh)

Priority Applications (6)

Application Number Priority Date Filing Date Title
ES12884347.1T ES2581860T3 (es) 2012-12-28 2012-12-28 Método, aparato y sistema de alimentación en energía Ethernet
CN201280003036.4A CN104137473B (zh) 2012-12-28 2012-12-28 以太网供电方法、装置、设备和系统
CA2845423A CA2845423C (en) 2012-12-28 2012-12-28 Power over ethernet method, apparatus, device, and system
EP12884347.1A EP2770664B1 (en) 2012-12-28 2012-12-28 Ethernet power supply method, apparatus and system.
PCT/CN2012/087846 WO2014101110A1 (zh) 2012-12-28 2012-12-28 以太网供电方法、装置、设备和系统
US14/464,514 US9268383B2 (en) 2012-12-28 2014-08-20 Power over ethernet method, apparatus, device, and system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2012/087846 WO2014101110A1 (zh) 2012-12-28 2012-12-28 以太网供电方法、装置、设备和系统

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US14/464,514 Continuation US9268383B2 (en) 2012-12-28 2014-08-20 Power over ethernet method, apparatus, device, and system

Publications (1)

Publication Number Publication Date
WO2014101110A1 true WO2014101110A1 (zh) 2014-07-03

Family

ID=51019740

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2012/087846 WO2014101110A1 (zh) 2012-12-28 2012-12-28 以太网供电方法、装置、设备和系统

Country Status (6)

Country Link
US (1) US9268383B2 (zh)
EP (1) EP2770664B1 (zh)
CN (1) CN104137473B (zh)
CA (1) CA2845423C (zh)
ES (1) ES2581860T3 (zh)
WO (1) WO2014101110A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107994999A (zh) * 2017-11-29 2018-05-04 新华三技术有限公司 一种PoE功率管理方法和装置
CN113030556A (zh) * 2021-02-08 2021-06-25 山东捷讯通信技术有限公司 一种以太网电流测量电路及一种以太网终端系统

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9860071B2 (en) * 2013-03-01 2018-01-02 Computer Performance, Inc. Power over ethernet injector
US10281968B2 (en) 2016-05-09 2019-05-07 Arris Enterprises Llc Detection of non-powered device (non-PD) on a power-over-ethernet port based on the data link state information
CN107979474B (zh) * 2016-10-21 2020-06-26 华为技术有限公司 网络设备及供电方法
CN108933671B (zh) * 2017-05-26 2021-06-01 华为技术有限公司 供电管理方法、设备和系统
US11307778B2 (en) 2018-03-09 2022-04-19 Kioxia Corporation Power management for solid state drives in a network
CN108509010B (zh) * 2018-03-21 2024-04-23 联想(北京)有限公司 供电方法和供电系统
US11237618B2 (en) * 2018-07-19 2022-02-01 Dell Products L.P. System and method to maintain optimal system performance within user defined system level power cap in a changing workload environment
CN110658408B (zh) * 2019-10-14 2021-12-07 深圳供电局有限公司 一种变电站安全自动装置的测试终端平台及测试系统
US11522727B2 (en) * 2020-10-14 2022-12-06 Juniper Networks, Inc. Cooperative power management
CN112422298B (zh) * 2020-10-21 2022-10-18 武汉虹信科技发展有限责任公司 Poe供电装置、方法及系统
CN112615724B (zh) * 2020-11-03 2022-08-02 深圳凌特华盛科技有限公司 一种poe负载优先供电管理系统

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100106985A1 (en) * 2008-01-03 2010-04-29 Broadcom Corporation System and method for global power management in a power over ethernet chassis
CN101707380A (zh) * 2008-07-21 2010-05-12 北京星网锐捷网络技术有限公司 供电系统配置方法、装置及系统
CN101820348A (zh) * 2010-03-09 2010-09-01 武汉烽火网络有限责任公司 一种poe系统中对设备进行过载保护的方法和装置
CN101826970A (zh) * 2009-01-05 2010-09-08 3柯姆公司 中间网络设备交换机电路和PoE输送的智能功率管理

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7373528B2 (en) * 2004-11-24 2008-05-13 Cisco Technology, Inc. Increased power for power over Ethernet applications
US7814340B2 (en) * 2005-12-12 2010-10-12 Linear Technology Corporation Power management mechanism in system for supplying power over communication link
CN101060412B (zh) * 2007-03-29 2011-05-11 杭州华三通信技术有限公司 以太网电源系统、主控模块及以太网电源供电方法
US7945797B2 (en) * 2007-07-12 2011-05-17 Research In Motion Limited System and method for portable power source management
JP5157649B2 (ja) * 2008-06-02 2013-03-06 日本電気株式会社 電力制御システム
CN102025509B (zh) * 2010-11-10 2014-07-16 中兴通讯股份有限公司 一种断电控制方法及装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100106985A1 (en) * 2008-01-03 2010-04-29 Broadcom Corporation System and method for global power management in a power over ethernet chassis
CN101707380A (zh) * 2008-07-21 2010-05-12 北京星网锐捷网络技术有限公司 供电系统配置方法、装置及系统
CN101826970A (zh) * 2009-01-05 2010-09-08 3柯姆公司 中间网络设备交换机电路和PoE输送的智能功率管理
CN101820348A (zh) * 2010-03-09 2010-09-01 武汉烽火网络有限责任公司 一种poe系统中对设备进行过载保护的方法和装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP2770664A4 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107994999A (zh) * 2017-11-29 2018-05-04 新华三技术有限公司 一种PoE功率管理方法和装置
CN107994999B (zh) * 2017-11-29 2021-05-28 新华三技术有限公司 一种PoE功率管理方法和装置
CN113030556A (zh) * 2021-02-08 2021-06-25 山东捷讯通信技术有限公司 一种以太网电流测量电路及一种以太网终端系统
CN113030556B (zh) * 2021-02-08 2022-11-11 山东捷讯通信技术有限公司 一种以太网电流测量电路及一种以太网终端系统

Also Published As

Publication number Publication date
US9268383B2 (en) 2016-02-23
US20140359320A1 (en) 2014-12-04
EP2770664A4 (en) 2015-01-07
CA2845423A1 (en) 2014-06-28
EP2770664B1 (en) 2016-04-13
EP2770664A1 (en) 2014-08-27
CA2845423C (en) 2016-08-02
CN104137473B (zh) 2017-07-14
ES2581860T3 (es) 2016-09-07
CN104137473A (zh) 2014-11-05

Similar Documents

Publication Publication Date Title
WO2014101110A1 (zh) 以太网供电方法、装置、设备和系统
US11265179B2 (en) Power supply management method, device, and system
US7941677B2 (en) Apparatus and methods for managing power distribution over Ethernet
CA2949613C (en) Poe-based power supply method and pse
TWI453566B (zh) 功率控制管理器及方法
RU2437231C2 (ru) Система подачи мощности, сервер, способ подачи мощности, программа и носитель хранения информации
US20160036596A1 (en) Communication apparatus and control method therefor
US20180278488A1 (en) Sdn controlled poe management system
TW201737586A (zh) 電子系統與充電方法
WO2018072460A1 (zh) 网络设备及供电方法
JP2016189179A (ja) 電源管理装置
JP2013162745A (ja) 電子装置及びその駆動制御方法
WO2015090077A1 (zh) 移动终端充电的控制方法、装置、系统和移动终端
US8046602B2 (en) Controlling connection status of network adapters
US11775039B2 (en) Power providing device and method
JP6537085B2 (ja) 充電デバイスのための自己ループ検出方法及び装置
TW201224727A (en) Network device and method thereof for controlling power consumption
TWI469053B (zh) 電子裝置及其啟動方法
CN115004640A (zh) 一种设备功耗管理系统、方法、设备和存储介质
JP2017060300A (ja) 給電制御プログラム、給電制御装置、及び給電制御方法
CN109698755B (zh) 供电控制方法、供电设备及受电设备
JP5077663B2 (ja) 受電装置、給電システム、および電源管理方法
WO2022105262A1 (zh) 供电管理方法、装置和系统
US20240003985A1 (en) Systems and methods for determining electrical characteristics of power supply cable/s and taking one or more actions based on same
TWI479842B (zh) 可指示狀態的乙太網裝置及指示方法

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 2845423

Country of ref document: CA

WWE Wipo information: entry into national phase

Ref document number: 2012884347

Country of ref document: EP

121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12884347

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE