TW201911810A - Power over Ethernet management method and Power over Ethernet device thereof capable of effectively using DC power and a battery to supply power, thereby improving convenience, applicability and safety - Google Patents

Abstract

The present invention relates to a Power over Ethernet (POE) management method and a Power over Ethernet (POE) device thereof. The Power over Ethernet management method includes: performing a dual power battery detection step on a POE device; performing a first battery power lower limit detection step if it is determined that the external DC power is not higher than a low voltage cutoff (LVC) protection threshold of a rated voltage; turning off the low-priority POE powered device if it is determined that the battery voltage is above Z volts; performing a second battery power lower limit detection step, including determining whether the battery voltage is further lower than a low voltage disconnect (LVD) threshold, if it is determined that the battery voltage is not above Z volts; if the battery voltage is further lower than the LVD threshold, performing a standby step, in which the POE device starts a standby mode and waits for a DC power source to charge the POE device; if the battery voltage is not lower than the LVD threshold, turning off all remaining POE powered devices by the POE device. Through the above method, the POE device can effectively use DC power and the battery to supply power, thereby improving convenience, applicability and safety.

Description

Ethernet power supply management method and its Ethernet power supply device

The invention relates to an Ethernet power supply method, in particular to an Ethernet power supply management method and an Ethernet power supply device, which can use an external DC power supply device and a battery to turn the power supply when there is no AC power supply. It is an Ethernet power supply system with a power management mechanism. Through this method, the Ethernet power supply device can operate in the environment lacking AC power, and can better manage the power supply of the connected Power Over Ethernet (POE) powered devices. The POE powered device with lower priority is selectively turned off.

In the field of renewable energy power supplies such as traditional solar cells, the general commercially available power supply equipment is mainly used by households. In addition to the power supply wattage, the power supply equipment is above the kW, and adopts a large circuit design. With AC output, most of the products in this category are large in size, inconvenient to connect and operate, complicated, costly, and require professional maintenance. For the related technologies of the above-mentioned power supply equipment, reference may be made to the invention patents No. I385890 and No. I437791. In addition, such devices have complex construction difficulties and redundant application designs when connecting to home Ethernet devices or low-key network devices, so the installation and maintenance costs are quite high. In the case of the invention patent No. I385890, the integrated weak current control device integrates the mains and unnecessary loops, so it is impossible to provide a simple installation product for the small wattage information device, and the device does not have external wireless such as 4G/LTE. The expansion of communication equipment to provide the ability to set up anywhere, and does not have the ability to perform on-site alarms via digital input/output (I/O) or control center alarms via IP (Internet Protocol) remote management. .

For an average family of 2 to 6 people, about 3 to 4 cameras are required for the security monitoring system operating through Ethernet devices or related network devices, and the total power consumption is no more than one hundred watts. If a remote monitoring system is established, such as a single point of monitoring in a community or a national park, it does not exceed this category. In the case of the aforementioned safety monitoring system, the use of power supply equipment to the upper roof tile would be too wasteful and complicated. The power supply devices disclosed in the above-mentioned Inventions No. I385890 and No. I437791 are all above the silicon tile, and have low flexibility in application, and the monitoring system for the above low power demand has difficulty in application.

Please refer to FIG. 5, which discloses a conventional solar power supply system designed by an energy company, including an Ethernet switching processor 91, a solar power supply unit 92, an external DC power supply 93, and a 24 volt DC. (24V DC) external battery 94 and a management computer 95, the solar power supply device 92 is electrically connected to the Ethernet exchange processor 91, the external DC power supply 93 and the 24V DC external battery 94 are electrically connected to the solar power supply device 92, The management computer 95 is electrically connected to the Ethernet switching processor 91 and the solar power supply device 92, and controls the entire system power supply to be powered by the solar power device 92, the external DC power source 93, or the 24 volt DC (24V DC). The external battery 94 supplies power to the external POE power receiving device 96 and the non-POE power receiving device 97 connected to the Ethernet switching processor 91. However, the solar power supply system is designed and managed by the power utilization thinking, rather than by the digital device application, so that the Ethernet switching processor 91 and the solar power supply device 92 need to be separately operated and set. Therefore, for general Netcom or digital home users, it is not easy to get started, whether it is in installation and construction, operation, management and application, and it is easy to encounter difficulties. In order to individually set, manage and monitor the Ethernet switching processor 91 and the solar power supply device 92, the administrator needs to use different management platforms, or through the management computer 95 wiring, and the operator must have professional operational knowledge. .

In addition, in the above solar power supply system, the battery system and the power system are two independent systems. Once the battery is no longer charged, the back end POE power receiving device 97 continues to consume battery power. When the battery is exhausted, all POE power receiving devices are used. 96 Regardless of the priority level, the interruption is unusable and cannot be managed.

The present inventors have inferred the problems of the low power consumption of the conventional power supply equipment for the small Ethernet equipment and the peripheral equipment connected thereto, and improved the shortage and lack thereof, thereby inventing an Ethernet power supply management method and its Ethernet network. Road power supply unit.

The main purpose of the present invention is to provide an Ethernet power supply management method and an Ethernet power supply device, which can use an external DC power supply device and a battery to convert the power supply into an Ethernet power supply system when no AC power is supplied. And it also has a power management mechanism. Through this method, the Ethernet power supply device can operate in the environment lacking AC power, and can better manage the power supply of the connected Power Over Ethernet (POE) powered devices. The POE powered device with lower priority is selectively turned off.

To achieve the above objective, the foregoing Ethernet power supply management method includes the following steps: a booting process, including a POE device booting up and powered by a battery; a dual power detecting step, including determining whether there is a DC input of X volt or more And determining whether the battery voltage is higher than a Low Voltage Cutoff (LVC) protection threshold; if yes, the POE device continues to operate normally, and the dual power detection step is performed again; if the dual power detection If there is no DC input above XV or the battery voltage is not higher than the LVC protection threshold, a first battery lower limit detection step is performed, including determining whether the battery voltage is lower than the LVC protection threshold, and determining whether The battery voltage is above Z volts. If yes, the POE device turns off the low priority POE power receiving device among the connected at least one POE power receiving device, and performs the dual power detecting step again; if the battery When the voltage is lower than Z volts, a second battery lower limit detecting step is performed, including determining whether the battery voltage is further lower than a low voltage full cut ( Low Voltage Disconnect, LVD) threshold; if yes, a standby step is performed, the POE device enters standby mode and waits for the DC power to charge the POE device; if not, the POE device turns off all remaining POE powered devices.

By the above technical means, the Ethernet power supply management method of the present invention integrates charging and power supply into the same system, and has the following advantages: the POE device (including the Ethernet power supply and data exchange function) only needs to be higher than X. Volt (24 V) DC power supply or renewable energy (solar or hydro-generator), supplemented by rechargeable batteries, such as lead-acid batteries, can directly drive POE powered devices (in compliance with POE power-receiving VoIP) , IP sharer, network camera, notebook computer and other equipment). In the case that the battery voltage is lower than the LVC protection threshold but still higher than Z volts and the battery retains a certain proportion of power, the Ethernet power management method can first turn off the POE powered device with lower priority. If the battery voltage is already below the minimum LVD threshold, the POE device can shut down all POE powered devices. In this way, power management can be optimized to enable high-priority POE powered devices to operate normally with low battery power.

The aforementioned X value is 24 or more.

The aforementioned LVC protection threshold is 20 to 40 volts, the Z value is 22 to 21.5, and the LVD threshold is 21 volts or less.

Another object of the present invention is to provide an Ethernet power supply device suitable for the foregoing management method, comprising: a central processing unit; an Ethernet switching processing unit electrically connected to the central processing unit and exchangeable network packets a memory unit electrically connected to the central processing unit; a plurality of POE ports, electrically connected to the Ethernet switching processing unit, wherein a part of the POE ports are high priority POE ports, and the rest are low priority POE ports. a power supply and charging module electrically connecting the central processing unit, the Ethernet switching processing unit, the memory unit, and the plurality of POE ports; an external DC power source detachably connecting the power supply and charging mode And the external battery is detachably connected to the power supply and charging module; wherein the power supply and charging module transmits the central processing unit to the central processing unit and the Ethernet switching processing unit through external direct current power or external battery power The memory unit and the plurality of POE ports are powered, and when the external battery is powered, the central processing unit Continue to detect the voltage of the external battery. If the voltage of the external battery is lower than an LVC protection threshold and higher than Z volts, cut off the power supply of all low priority POE ports, if the voltage of the external battery further drops to a When the LVD threshold is Z volts, the power supply to the high priority POE port is further cut off.

When the voltage of the external battery further drops below the LVD threshold, the Ethernet power supply enters a standby mode and charges the external battery with an external DC power source.

The aforementioned LVC protection threshold is 20 to 40 volts, the Z value is 22 to 21.5, and the LVD threshold is 21 volts or less.

The aforementioned external DC power source has a voltage of 24V or more.

The aforementioned external battery has a voltage of 24 V or more.

The power supply and charging module includes a charging management processing unit, a DC-DC conversion module, and a POE power supply unit. The charging management processing unit is electrically connected to the central processing unit and the memory unit, and The external DC power supply and the external battery are electrically connected to the central processing unit and the Ethernet switching processing unit, and the POE power supply unit is electrically connected to the plurality of POE ports.

The aforementioned DC-DC conversion module, the POE power supply unit, and the plurality of POE ports are compliant with IEEE 802.3af/at or above.

The foregoing Ethernet power supply device further includes at least one universal serial bus (USB) port connected to the central processing unit and the power supply and charging module.

The aforementioned Ethernet power supply device further includes at least one digital output input unit electrically connected to the central processing unit and the power supply and charging module.

The foregoing Ethernet power supply device further includes a webpage management interface program stored in the memory unit, which includes a remote login and operation function and a setting function of a first battery power lower limit and a second battery power lower limit for respectively The Z value and the LVD threshold are set.

The webpage management interface program includes an external DC voltage supply voltage monitoring function, an external battery voltage and power monitoring function, a POE power supply wattage monitoring function, and a power supply and charging history record function.

Referring to FIG. 1 and FIG. 2, another power over Ethernet (POE) device 1 of the present invention includes: a central processing unit 10, an Ethernet switching processing unit 12, and a memory unit. 14. A plurality of POE ports 20, a power supply and charging module 30, an external DC power source 38, an external battery 39, at least one universal serial bus (USB) port 40, and at least one digital output input unit 42 and a web page management interface program 16.

The central processing unit 10 can be a central processor of an Advanced RISC Machine (ARM) architecture or a central processor of an x86 instruction set architecture.

The Ethernet switching processing unit 12 can be a processor of an ARM architecture or an x86 instruction set architecture, or can be a processor of other specifications. The Ethernet switching processing unit 12 is electrically coupled to the central processing unit 10 and can exchange network packets. The Ethernet switching processing unit 12 can be managed through the central processing unit 10, such as idle speed adjustment, virtual network setting, or packet traffic monitoring.

The memory unit 14 is electrically connected to the central processing unit 10, and may be a random dynamic access memory, or a combination of random dynamic access memory and flash memory.

The plurality of POE ports 20 can conform to the IEEE 802.3af/at or higher standard and are electrically connected to the Ethernet switching processing unit 12, wherein a part of the POE ports 20 are high priority POE ports 20, and the rest are low priority POEs. Connect 埠20. The plurality of POE ports 20 can be electrically connected to the POE powered device 70, for example, to a network phone, IP sharer, network camera, or notebook computer that conforms to the POE power receiving protocol. In addition, the plurality of POE ports 20 can be RJ45 ports, RJ-11 ports, or coaxial ports. The plurality of POE ports 20 can also be connected to non-POE powered devices 80, such as a general IP sharer, a network camera, or a notebook computer that is not powered by Ethernet.

The power supply and charging module 30 is electrically connected to the central processing unit 10, the Ethernet switching processing unit 12, the memory unit 14, and the plurality of POE ports 20. In addition, the power supply and charging module 30 includes a charge management processing unit 32, a DC-DC conversion module 34, and a POE power supply unit 36.

The charge management processing unit 32 is electrically connected to the central processing unit 10 and the memory unit 14.

The DC-DC conversion module 34 can be electrically connected to the central processing unit 10 and the Ethernet switching processing unit 12 in accordance with IEEE 802.3af/at or above.

The POE power supply unit 36 can conform to the IEEE 802.3af/at or higher standard and electrically connect the plurality of POE ports 20. In the preferred embodiment, the POE power supply unit 36 can provide 30 watts or more of power supply capability to each POE port 20, and can manage settings of the POE power supply unit 36 through the central processing unit 10, such as power supply opening and closing settings. , power consumption upper limit management, power monitoring.

The external DC power source 38 is detachably connected to the charge management processing unit 32 of the power supply and charging module 30, and may have a voltage of 24 V or more. In addition, the external DC power source 38 can be a solar power source, a hydraulic regenerative power source, a wind regenerative power source, or the like.

The external battery 39 is detachably connected to the charge management processing unit 32 of the power supply and charging module 30, and may have a voltage of 24V or more. Further, the external battery 39 may be a lead acid battery, a lithium battery, a lithium polymer battery, or a lithium iron battery.

The USB port 40 is electrically connected to the central processing unit 10 and the power supply and charging module 30, and can conform to the USB 2.0 to 3.1 protocol standard, or can conform to the USB Type C protocol, thereby electrically connecting the external USB device 50. For example, a USB network card with a wireless communication protocol such as Wifi or 4G/LTE is connected to enable the POE device 1 to expand the wireless communication function, and a USB flash memory storage disk can also be connected for data backup.

The digital output input unit 42 is electrically connected to the central processing unit 10 and the power supply and charging module 30, thereby electrically connecting the external digital output input device 60, for example, connecting an IR infrared detector, a smoke detector, a ring or a sound. Light alarms, etc.

The webpage management interface program 16 is stored in the memory unit 14, and includes a remote login and operation function and a setting function of a first battery power lower limit and a second battery power lower limit for separately performing the Y value and the Z value. set up. In addition, the webpage management interface program 16 may further include an external DC voltage supply voltage monitoring function, an external battery 39 voltage and power monitoring function, a POE power supply wattage monitoring function, and a power supply and charging history recording function.

The power supply and charging module 30 transmits the power to the central processing unit 10, the Ethernet switching processing unit 12, the memory unit 14, and the plurality of POE ports 20 through the external DC power source 38 or the power of the external battery 39. The central processing unit 10 continuously detects the voltage of the external battery 39 when the external battery 39 is powered, if the voltage of the external battery 39 is lower than a Low Voltage Cutoff (LVC) protection threshold and high. When the voltage is above Z volts, the power supply of all low-priority POE ports 20 is cut off, and if the voltage of the external battery 39 is further lowered to a low voltage (LVD) threshold to Z volts, further Turning off the power supply of the high priority POE port 20, when the voltage of the external battery 39 further drops below the LVD threshold, the Ethernet power supply enters the standby mode and charges the external battery 39 with the external DC power source 38. . In addition, the LVC protection threshold is 20 to 40 volts, the Z value is 22 to 21.5, and the LVD threshold is 21 volts or less.

With further reference to FIG. 3, the present invention also provides an Ethernet power supply management method using the above Ethernet power supply device, which includes the following steps:

A booting step S01, including the startup of the POE device 1, is powered by a battery. The battery here is the external battery 39.

A pair of power detecting step S02 includes determining whether there is a direct current input of X volts (Volt, V) or more, and determining whether the voltage of the external battery 39 is higher than an LVC protection threshold; if yes, the POE device 1 continues to operate normally. And performing the dual power detecting step S02 again.

If there is no DC input of X volts or more or the voltage of the external battery 39 is not higher than the LVC protection threshold in the dual power detecting step S02, a first battery lower limit detecting step S03 is performed, including determining whether the external battery 39 The voltage is lower than the LVC protection threshold, and it is determined whether the external battery 39 voltage is above Z volts. If yes, the POE device 1 turns off the POE with low priority among the connected at least one POE power receiving device 70. The device 70 executes the dual power detection step S02 again. The first battery lower limit detecting step S03 is for detecting the voltage of the external battery 39, mainly because the battery power is proportional to the battery voltage.

If the voltage of the external battery 39 is lower than Z volt, performing a second battery lower limit detecting step S04, including determining whether the external battery 39 voltage is further lower than an LVD threshold; if yes, performing a standby step S05, the POE The device 1 enters a standby mode and waits for a DC power source to charge the POE device 1, wherein the DC power source is the external DC power source 38 described above; if not, the POE device 1 turns off all remaining POE power receiving devices 70. The second battery lower limit detecting step S04 is to detect the voltage of the external battery 39, mainly because the battery power is proportional to the battery voltage.

In a preferred embodiment of the invention, the external DC power supply has a LVC protection threshold of 20 to 40 volts, a Z value of 22 to 21.5, and an LVD threshold of 21 volts or less.

Please refer to Figure 4 again, which is a graph of battery power percentage (vertical axis) and voltage (horizontal axis). It can be seen that the LVC protection threshold (Y volts) is at 22.3V, and the corresponding battery power percentage is 30%, Z volts at 21.4V, the corresponding battery power percentage is 20%, the LVD threshold is 21V, and the corresponding battery power percentage is 10%. The graph is in the re-power state after the system is turned off and enters the standby mode and is charged by the external DC charging source, that is, the voltage is turned on after the charging reaches the voltage of the external battery 39 to return to the W volt, and the voltage of the external battery 39 is turned on. When further restored to P volts, the high priority POE powered device 70 (also referred to as a POE device) is further turned on, and when the voltage of the external battery 39 is further charged and restored to Q volts, all POEs with low priority are further turned on. Power receiving device 70.

By the above technical means, the present invention includes the following advantages:

1. The Ethernet power supply management method of the present invention integrates charging and power supply into the same system, and the POE device 1 (including the Ethernet power supply and data exchange function) only needs to have a DC power supply higher than X volts or regenerate. Energy (solar panels or hydroelectric generators), supplemented by rechargeable batteries, such as lead-acid batteries, can directly drive POE powered devices 70. In the case that the battery voltage is lower than the LVC protection threshold but still higher than Z volt and the battery retains a certain proportion of the power, the Ethernet power supply management method can first turn off the POE powered device 70 with lower priority. When the battery voltage has fallen below the lower limit LVD threshold, the POE device 1 can be caused to turn off all of the POE powered devices 70. Thereby, the power management can be optimized, so that the POE powered device 70 with high priority can still operate normally under low battery power.

2. The present invention further has a management function such as remote login and operation. The user can connect to the Ethernet through the browser to perform energy storage device management and Ethernet power supply device management directly through the central processing unit 10.

3. Through the USB port 埠40, you can further externally connect the USB network card with Wifi, 4G/LTE and other wireless communication protocols, provide wireless network management capabilities, or external USB flash memory storage disk for long-term data backup, thereby enhancing Management convenience and security.

4. Through the digital output input unit, the IR infrared detector, smoke detector, ringer or sound and light alarm device can be further connected, so that the POE device 1 has more applications.

1‧‧‧Ethernet power supply unit

10‧‧‧Central Processing Unit

12‧‧‧Ethernet exchange processing unit

14‧‧‧ memory unit

16‧‧‧Web Management Interface Program

20‧‧‧POE port

30‧‧‧Power supply and charging module

32‧‧‧Charging Management Processing Unit

34‧‧‧DC-DC converter module

36‧‧‧POE power supply unit

38‧‧‧External DC power supply

39‧‧‧External battery

40‧‧‧USB connection埠

50‧‧‧External USB device

60‧‧‧External digital output input device

42‧‧‧Digital output input unit

70‧‧‧POE powered devices

80‧‧‧Non-POE powered devices

91‧‧‧Ethernet exchange processor

92‧‧‧Solar power supply

93‧‧‧External DC power supply

94‧‧‧External battery

95‧‧‧Management computer

96‧‧‧POE powered devices

97‧‧‧Non-POE powered devices

Figure 1 is a block diagram of the system of the present invention.

FIG. 2 is a system block diagram of a webpage management interface program and related components of the present invention.

Figure 3 is a flow chart of the steps of the present invention.

Figure 4 is a graph showing the voltage and charge percentage of the external battery of the present invention.

Figure 5 is a block diagram of the system of a conventional power supply unit.

Claims (14)

An Ethernet power supply management method includes: a booting step, including a POE device booting up and powered by a battery; a pair of power detecting steps, including determining whether there is a DC input of more than X volts, and determining whether the battery voltage is Higher than a Low Voltage Cutoff (LVC) protection threshold; if both are, the POE device continues to operate normally, and the dual power detection step is performed again; if there is no X volt or more in the dual power detection step If the DC input or the battery voltage is not higher than the LVC protection threshold, performing a first battery low limit detection step, including determining whether the battery voltage is lower than the LVC protection threshold, and determining whether the battery voltage is above Z volts If yes, the POE device turns off the low priority POE powered device among the connected at least one POE powered device, and performs the dual power detecting step again; and if the battery voltage is lower than Z volt, Performing a second battery low-level detection step, including determining whether the battery voltage is further lower than a low voltage (Low Voltage Disconnect, LVD) a threshold; if so, a standby step is performed, the POE device enters a standby mode and waits for the streaming power to charge the POE device; if not, the POE device turns off all remaining POE powered devices. The Ethernet power supply management method according to claim 1, wherein the X value is 24 or more. The Ethernet power management method according to claim 1 or 2, wherein the LVC protection threshold is 20 to 40 volts, the Z value is 22 to 21.5, and the LVD threshold is 21 volts or less. An Ethernet power supply device comprising: a central processing unit; an Ethernet switching processing unit electrically connected to the central processing unit and exchanging network packets; a memory unit electrically connected to the central processing unit; A plurality of POE ports are electrically connected to the Ethernet switching processing unit, wherein a part of the POE ports are high priority POE ports, and the rest are low priority POE ports; a power supply and charging module is electrically connected to the central processing a unit, the Ethernet switching processing unit, the memory unit, and the plurality of POE ports; an external DC power source detachably connecting the power supply and charging module; and an external battery detachably connecting the The power supply and charging module; wherein the power supply and charging module supplies power to the central processing unit, the Ethernet switching processing unit, the memory unit, and the plurality of POE ports via external DC power or external battery power When the external battery is powered, the central processing unit continuously detects the voltage of the external battery, if the voltage of the external battery When the LVC protection threshold is higher than Z volts, the power supply of all low priority POE ports is cut off, and if the voltage of the external battery further drops to an LVD threshold to Z volts, the high priority POE connection is further cut off. Power supply. The Ethernet power supply device of claim 4, wherein when the voltage of the external battery further drops below the LVD threshold, the Ethernet power supply enters a standby mode and charges the external battery with an external DC power source. . The Ethernet power supply device of claim 5, wherein the LVC protection threshold is 20 to 40 volts, the Z value is 22 to 21.5, and the LVD threshold is 21 volts or less. The Ethernet power supply device of claim 4, wherein the external DC power source has a voltage of 24 V or more. The Ethernet power supply device of claim 4, wherein the external battery has a voltage of 24 V or more. The Ethernet power supply device according to any one of claims 4 to 8, wherein the power supply and charging module comprises a charging management processing unit, a DC-DC conversion module, and a POE power supply. The charging management processing unit is electrically connected to the central processing unit and the memory unit, and is electrically connected to the external DC power source and the external battery in a detachable manner, the DC-DC conversion module is electrically connected to the central processing unit and the The Ethernet switching processing unit electrically connects the plurality of POE ports. The Ethernet power supply device of any one of claims 4 to 8, wherein the DC-DC conversion module, the POE power supply unit, and the plurality of POE ports are compliant with IEEE 802.3af/at or above. The Ethernet power supply device of any one of claims 4 to 8, further comprising at least one universal serial bus (USB) port, the USB port electrically connecting the central processing unit and the Power supply and charging module. The Ethernet power supply device according to any one of claims 4 to 8, further comprising at least one digital output input unit electrically connected to the central processing unit and the power supply and charging module. The Ethernet power supply device of any one of claims 4 to 8, further comprising a webpage management interface program stored in the memory unit, including a remote login and operation function and a first battery lower limit And a setting function of the second battery power lower limit for respectively setting the Z value and the LVD threshold value. The Ethernet power supply device of claim 13, wherein the webpage management interface program comprises an external DC voltage supply voltage monitoring function, an external battery voltage and power monitoring function, a POE power supply wattage monitoring function, and a power supply and charging history record. Features.