System and method for providing increased power using power over ethernet

Abstract

Systems and methods for providing increased power using Power over Ethernet are disclosed. The present disclosure relates to a method for controlling the output power of a power sourcing equipment to a powered device over one or more Ethernet cables, comprising: performing a power negotiation between the power sourcing equipment and the powered device, the power negotiation comprising establishing a relationship between the output voltage of the power sourcing equipment and the loop current from the powered device to the power sourcing equipment by measuring the loop current in a current-sense device; obtaining an indication of whether the powered device requires increased power and whether the power sourcing equipment belongs to a type of power sourcing equipment capable of delivering increased power; if the powered device requires increased power and the power sourcing equipment belongs to a type of power sourcing equipment capable of delivering increased power, physically manipulating the current-sense device such that it senses a manipulated lower loop current; and providing a manipulated higher output power from the power sourcing equipment to the powered device. The present disclosure further relates to a power sourcing equipment and to a system comprising a power sourcing equipment.

Description

Technical Field

[0001] This disclosure relates to a method for controlling the output power of a power supply device to an electrical appliance via one or more Ethernet cables. By using this method, it is possible to provide power greater than that specified by standards. This disclosure further relates to power supply devices and systems including such devices. Background Technology

[0002] Power over Ethernet (PoE) describes a standard for transmitting both power and data over a twisted-pair Ethernet cable. This allows a single cable to provide both data connectivity and power to devices such as Internet Protocol (IP) cameras. Consequently, PoE connections eliminate the need for a nearby power outlet. Several technologies exist for transmitting power over Ethernet cables. Some of these have been standardized by the Institute of Electrical and Electronics Engineers (IEEE).

[0003] The IEEE PoE standard specifies the signaling between a power supply and a power consumer. "Power Supply Equipment" (PSE) and "Power Consumer" (PD) are standard terms known in the PoE standard. Power supply equipment, such as midspan units, enables existing networks to support PoE. Power supply equipment, which adds power to the Ethernet cable, is placed between the network switch and the power consumer. Signaling between the power supply equipment and the power consumer allows the presence of a compatible device to be detected by the power supply equipment, and allows the power consumer and the power supply equipment to negotiate the amount of power needed or available.

[0004] An example of a standard is the IEEE 802.3bt standard, which limits the output power from the power supply to 90W. However, this power may be insufficient for some devices, or for certain modes or conditions under which the device operates. For example, an IP camera with a PTZ (pan-tilt-zoom) sensor might require more than 90W in cold weather. In such cases, adding an external power supply is possible. However, this solution is not ideal because it requires additional hardware and power cables. Summary of the Invention

[0005] This disclosure relates to methods and systems for providing enhanced power over a Power over Ethernet (PoE) connection (i.e., a connection providing both data and power). The methods and systems are based on manipulation of the functionality of a power supply device to provide enhanced power. "Enhanced power" refers to power greater than that limited to a power supply device according to a given standard (e.g., the IEEE 802.3bt standard). Other examples of IEEE standards are the 802.3af and 802.3at standards. Standards are typically limited by maximum output performance. The power supply device needs to be backward compatible with existing PoE solutions and existing standards. Therefore, for example, it is not possible to simply use higher output power. The power supply device can be, for example, a Power over Ethernet middleware or a Power over Ethernet switch.

[0006] According to a first embodiment, this disclosure relates to a method for controlling the output power of a power supply device to an electrical device via one or more Ethernet cables, the method comprising:

[0007] Power negotiation is performed between the power supply equipment and the electrical device. Power negotiation includes establishing the relationship between the output voltage of the power supply equipment and the loop current of the power supply equipment by measuring the loop current from the electrical device to the power supply equipment in the current sensing device.

[0008] Obtain an indication of whether the electrical appliance requires increased power and whether the power supply equipment is of the type capable of delivering the increased power;

[0009] If the electrical appliance requires increased power and the power supply equipment is of a type capable of delivering increased power, then the current sensing device is physically manipulated so that it senses the manipulated lower loop current; and

[0010] Provide higher output power for operation from power supply equipment to electrical devices.

[0011] Power negotiation can be viewed as a traditional power negotiation between power supply equipment and power consumption devices.

[0012] Once conventional power negotiation has been completed, a second negotiation can be performed between the power supply equipment and the power consumption device. This second negotiation may be accomplished via software-based communication over one or more Ethernet cables. The step of obtaining an indication of whether the power consumption device requires increased power and whether the power supply equipment is of a type capable of delivering the increased power can be initiated by the power consumption device or by the power supply equipment. Accordingly, the step of obtaining an indication of whether the power consumption device requires increased power and whether the power supply equipment is of a type capable of delivering the increased power may include: obtaining a request from the power consumption device for increased power and obtaining confirmation from the power supply equipment that it is of a type capable of delivering the increased power; or obtaining a proposal from the power supply equipment to provide the increased power and obtaining acceptance from the power consumption device to receive the increased power.

[0013] Therefore, this power negotiation can begin with a power device requesting increased power. Alternatively, the power supply can initiate the process by transmitting information indicating its ability to provide increased power. The power device can then request or acknowledge that it needs increased power. If the power device has requested increased power and the power supply is of a type capable of delivering increased power, a current sensing device can be manipulated to sense the manipulated lower loop current. This can be done in several ways. In one embodiment, the step of performing power negotiation includes measuring the loop current using a first shunt resistor, and the step of physically manipulating the current sensing device includes activating a manipulating shunt resistor in the power supply, wherein the manipulating shunt resistor has a lower resistance than the first shunt resistor. According to one embodiment, the manipulating shunt resistor can be activated in the power supply. The manipulating shunt resistor has a lower resistance than the first shunt resistor. The manipulating shunt resistor can be implemented in several ways. For example, the manipulating shunt resistor can include a manipulating shunt resistor connected in parallel with the first shunt resistor. This can be done by turning a switch on the manipulating shunt resistor. Another possibility is to have two resistors connected in series constituting the first shunt resistor. Then, the shunt resistor can be manipulated using only one of the resistors to provide a lower overall manipulated shunt resistance. The idea behind manipulating the shunt resistance is to manipulate the power supply to deliver increased power. If the resistance is lower, the power supply will appear to be using less power than it actually uses. Therefore, it can provide increased power without further changes. Another option for manipulating the current sensing device is to use an inductor circuit and a Hall sensor to measure the loop current, wherein the step of physically manipulating the current sensing device includes manipulating the inductor circuit and / or the Hall sensor. This can be accomplished, for example, by increasing the number of windings in the inductor circuit during manipulation so that the current sensing device senses the manipulated lower loop current. Accordingly, in one embodiment of the currently disclosed method, the step of performing power negotiation includes measuring the loop current using an inductor circuit and a Hall sensor, and wherein the step of physically manipulating the current sensing device includes manipulating the inductor circuit and / or the Hall sensor, such as by increasing the number of windings in the inductor circuit.

[0014] One advantage of currently available power supply equipment is its backward compatibility. The physical manipulation of the current sensing device is only performed when the electrical appliance has requested increased power and the power supply equipment is of a type capable of delivering increased power. Power supply equipment is typically a small device with a standard AC input connector, for example, in the range of 100V to 240V. Some power supply equipment is also suitable for handling DC input. There is also the possibility of power supply equipment with lower input voltages that can be internally boosted. The device typically further includes an Ethernet socket, such as an RJ45 socket, into which an Ethernet cable can be inserted. Figure 4A and Figure 4BAn example of power in an Ethernet midspan is shown. The currently disclosed power supply equipment can replace traditional power supply equipment. Externally, there is no difference, and the midspan is fully compatible with existing PoE systems, but it can also support products (electrical devices) using power exceeding the limits of IEEE PoE standards such as 802.3bt.

[0015] This disclosure further relates to power supply equipment, including:

[0016] The Power over Ethernet (PoE) manager module is used to power devices via one or more Ethernet cables based on the input power.

[0017] A measuring unit used to directly or indirectly measure the output voltage of power supply equipment;

[0018] A current sensing device used to measure the loop current from an electrical appliance to a power supply device;

[0019] The processing unit is configured as follows:

[0020] Power negotiation is performed between the power supply equipment and the power consumption equipment. Power negotiation includes establishing the relationship between the output voltage of the power supply equipment and the first circuit current.

[0021] Obtain an indication of whether the electrical appliance requires increased power and whether the power supply equipment is of the type capable of delivering the increased power;

[0022] Physically manipulate the current sensing device so that it senses the lower loop current being manipulated.

[0023] The power supply equipment is configured to provide a higher output power to the electrical device if the electrical device requires increased power and the power supply equipment is of a type capable of delivering increased power.

[0024] Those skilled in the art will recognize that the currently disclosed method for controlling the output power of a power supply device to an electrical device via one or more Ethernet cables can be performed using any embodiment of the currently disclosed power supply device, and vice versa. Attached Figure Description

[0025] In the following description, various embodiments are illustrated with reference to the accompanying drawings. The drawings are examples of embodiments and are intended to illustrate some of the features of the currently disclosed methods and systems for providing enhanced power over a Power over Ethernet connection, but are not limited to the currently disclosed methods and systems.

[0026] Figure 1 A flowchart illustrating an embodiment of a currently disclosed method for controlling the output power of a power supply device to an electrical appliance via one or more Ethernet cables.

[0027] Figure 2 A schematic diagram illustrating an embodiment of a power supply device currently disclosed, having an Ethernet cable and power supply equipment.

[0028] Figure 3 An example of a power configuration for a PoE solution with an 8-pin, 8-wire Ethernet cable is shown.

[0029] Figure 4A and Figure 4B An example of a Power over Ethernet (PoE) midspan with an AC input connector and two Ethernet sockets is shown. Detailed Implementation

[0030] This disclosure relates to a method for controlling the output power of a power supply device to an electrical device via one or more Ethernet cables. Alternatively, the method can be considered as a method of providing increased power from the power supply device to the electrical device using one or more Ethernet cables.

[0031] This method is preferably a computer-implemented method. Preferably, power negotiation is performed between the power supply device and the consumer device. The first power negotiation includes establishing a relationship between the output voltage of the power supply device and the loop current by measuring the loop current from the consumer device to the power supply device in a current sensing device. The power negotiation can be any PoE power negotiation of any PoE standard. Examples and further details are provided below. The method may further include the step of obtaining an indication of the increased power required by the consumer device. If the power supply device is determined to be of a type capable of delivering increased power, the method may physically manipulate the current sensing device such that the current sensing device senses a manipulated lower loop current, for example, by activating a manipulated shunt resistor in the power supply device, wherein the manipulated shunt resistor has a lower resistance than the first shunt resistor. Due to the manipulation, the power supply device can then provide the manipulated higher output power to the consumer device.

[0032] Figure 1 A flowchart is shown of a method (100) according to an embodiment of a currently disclosed method for controlling the output power of a power supply device to a power user device via one or more Ethernet cables. The method includes the steps of: performing power negotiation (101) between the power supply device and the power user device; obtaining an indication of whether the power user device requires increased power and whether the power supply device is capable of delivering increased power (102); if the power supply device is of a type capable of delivering increased power, physically manipulating a current sensing device such that the current sensing device senses a lower loop current of the manipulation (103); and providing the manipulated higher output power from the power supply device to the power user device (104).

[0033] As stated, a “power supply device” enables an existing network to support PoE. For example, adding power to the midspan of an Ethernet cable can be placed between a network switch and a power-consuming device. Power supply devices typically have AC input connectors that support input voltages ranging from, for example, 100V to 240V. Inside the power supply device, there is typically, but not necessarily, an AC / DC converter and a PoE manager module that implements output voltage control and supports functions specified in the standard, including detection, classification, power negotiation, etc. Such standard implementations of power supply devices are generally familiar to those skilled in the art. Many PoE manager modules are commercially available. The power supply device currently disclosed may include at least one first shunt resistor and a measuring unit for directly or indirectly measuring a) the output voltage from the power supply device to the power-consuming device, b) the loop current from the power-consuming device to the power supply device through at least one first shunt resistor, and c) the loop current from the power-consuming device by manipulating the shunt resistor. Direct or indirect measurement of voltage and current should be understood broadly to encompass any measurement that provides power for use by the power-consuming device. As an example, if the voltage across a known resistor is measured, the current is also known. Similarly, knowing the resistance, voltage, and current of a component also reveals the power being consumed. As mentioned above, there are different embodiments and implementations of the first shunt resistor and the operating shunt resistor. A current sensing device does not necessarily have to be implemented using a shunt resistor. It can also be implemented using, for example, an inductor circuit and a Hall sensor.

[0034] A first shunt resistor, typically implemented as one or more shunt resistors, or other components used in a current sensing device, can be used for power negotiation between the power supply and the user device. Power negotiation involves establishing a relationship between the output voltage of the power supply and the loop current from the user device to the power supply through the first shunt resistor in the power supply. PoE negotiation is the process of determining whether power should be supplied to the device over an Ethernet cable and how much power should be supplied. This is typically accomplished through a special signaling protocol between the power supply and the user device. If both the power supply and the user device support the same PoE standard, they can negotiate to supply the PD with up to the maximum amount of power specified by that standard. Negotiation can include discovery, classification, and operation. In this disclosure, references to “enhanced” power refer to power greater than the power intended to be used by a power supply device operating under a given PoE standard. The power intended to be used by a power supply device operating under a given PoE standard may be referred to as nominal power. As an example, the IEEE 802.3bt standard is limited to 90W. This does not necessarily mean that the Ethernet manager module cannot provide more than 90W of power. In this context, the increased power means that the power supply device will be manipulated to provide power greater than 90W (e.g., at least 120W). In one embodiment, the power supply device is manipulated to provide a maximum average power of approximately 180W. The power supply device may support, for example, a peak power of 200W. In one embodiment of the currently disclosed methods and systems, the power supply device is limited to delivering a maximum average output power of 90W, depending on the Power over Ethernet standard to which the power supply device operates, wherein the power supply device is manipulated to deliver an manipulated average output power greater than 90W (e.g., 120W or 180W).

[0035] Power negotiation can be viewed as conventional power negotiation between a power supply device and a power consumption device. Power negotiation can include a process in which a power PD requests a certain amount of power and a power supply equipment (PSE) allocates that power or less. Power negotiation can include classification and may include a series of steps and events known to those skilled in the art. Physical layer detection can be performed before applying the operating voltage. During this process, a series of events are executed during which the PSE applies a voltage level, and the PD responds to that voltage level with a predetermined current consumption.

[0036] After detection, but before applying the operating voltage, physical layer classification is performed. It consists of a series of classification events during which the PSE applies a voltage level, and the PD responds to that voltage level with a predetermined current consumption.

[0037] For example, as part of the power negotiation process, a fixed output power can be maintained while measuring the loop current from the electrical appliance. In a second step, the resistance in the electrical appliance can then be varied in one or more steps. For each resistor, the loop current is measured once or multiple times. For example, the resistance can be changed once, and the loop current can be measured five times (twice for the first resistor and three times for the second resistor). At the end of the power negotiation, the system is able to determine what power can be supplied to the electrical appliance. As those skilled in the art will understand, standard power negotiation is a well-known procedure. Deviations are possible. These can be found directly in standards such as the IEEE 802.3bt standard or in overviews such as those from the Ethernet Alliance (e.g., "802.3bt Overview – Power over Ethernet Standard", Yseboodt et al., 2018).

[0038] As part of the negotiation process, a first reference voltage may be applied, the output voltage maintained accordingly, and the loop current measured. A second reference voltage is applied, and multiple test resistors are sequentially activated in the electrical appliance, wherein the loop current of each test resistor is measured.

[0039] Figure 2 An embodiment of the currently disclosed power supply device 201 and a power consumption device system 210 including power consumption devices 209 is shown. The power consumption device system 210 may include multiple power consumption devices 209. The power supply device 201 and the power consumption device system 210 are connected using one or more Ethernet cables 211. Figure 2 In this example, the Ethernet cable 211 is illustrated with two PoE pairs 212. Each PoE pair may include multiple wires. More generally, the Ethernet cable 211 can have any suitable number of wires. The power supply device 201 includes an Ethernet power manager module (202) for powering the power consumption device 209. The power supply device 201 may typically have an AC input 216 and an AC / DC converter 208. Figure 2 In the diagram, the Ethernet power manager module 202 and the processing unit 206, such as a microcontroller, are shown as two separate units, but they can be integrated into a single solution. Figure 2The power supply device 201 in the example includes a measurement unit 205 for measuring the voltage across the first shunt resistor 203 or, when the switch 207 connects the operating shunt resistor 204, measuring the voltage across both the first shunt resistor 203 and the operating shunt resistor 204. The measurement unit 205 does not need to be a separate entity. It can be, for example, part of an Ethernet power manager module 202. The measurement unit 205 or another measurement unit can also be configured to measure the output voltage on any line to the power supply device 209 that is part of the PoE pair 212. In this embodiment, the measurement unit 205, the first shunt resistor 203, and the operating shunt resistor 204 represent a current sensing device 215. As can be seen, the upper PoE pair 212 may have additional current sensing devices 215 connected in parallel.

[0040] exist Figure 2 In the example, the first shunt resistor 203 constitutes the first shunt resistance. When switch 207 is connected, the operating shunt resistor 204 is connected in parallel to the first shunt resistor 203, thereby providing a total operating shunt resistance with a lower resistance than the first shunt resistance. As those skilled in the art will understand, the first shunt resistor and the operating shunt resistor do not necessarily have to be implemented using two resistors connected in parallel. For example, it may be possible to disconnect the first shunt resistor 203 and switch to using the operating shunt resistor 204 with a lower resistance instead of the first shunt resistor 203 when providing increased power.

[0041] According to one embodiment of a method and system for providing enhanced power via a Power over Ethernet connection, the step of activating a manipulating shunt resistor includes turning a switch on the manipulating shunt resistor.

[0042] After power negotiation is complete, the power supply and the power consumer can continue to communicate. This communication can be implemented in software, hardware, or a combination thereof. Therefore, requests and instructions for increased power can be obtained from the power consumer via software-based communication and / or communication via one or more Ethernet cables. Regardless of the implementation of this communication interface, the power consumer needs to indicate in some way that it requires increased power. This process can be initiated by the power supply or by the power consumer. For example, the power consumer could be a device such as a camera that requires more than 90W in cold weather. The power supply also needs to indicate that it belongs to a type capable of delivering increased power. According to one embodiment, if the power consumer does not indicate that it belongs to a type requiring additional power, the power supply delivers unmanipulated output power; if the power consumer indicates that it belongs to a type requiring additional power, the power supply delivers manipulated output power.

[0043] Preferably, the power supply device conforms to at least the IEEE PoE standard such as IEEE 802.3bt. However, the currently disclosed methods and systems for providing enhanced power via Power over Ethernet connections are not limited to the IEEE 802.3bt standard. It can be applied to any PoE standard with a maximum output power. Accordingly, the currently disclosed power supply device can be manipulated to deliver manipulated output power greater than 90W, 120W, or 180W.

[0044] The currently disclosed method may further include a second power negotiation performed after the first power negotiation. The second power negotiation can be viewed as a manipulated power negotiation that follows the conventional power negotiation and is part of a process to confirm the increased output power.

[0045] The concept described in this disclosure relates to providing controlled higher output power from a power supply device to an electrical appliance. This means that the increased power is fed from the power supply device to the electrical appliance via one or more Power over Ethernet (PoE) cables. Figure 3 An example of a power configuration for a PoE solution with an 8-pin, 8-wire Ethernet cable is shown. Figure 3 A power supply device 201 is shown connected to a power-consuming device system 210 via an Ethernet cable 211. The Ethernet cable 211 comprises four pairs of wires. Therefore, there are four data pairs (A, B, C, and D). Data pairs A and B form a PoE pair 212. Data pairs C and D form another PoE pair 212. The power supply device 201 includes an Ethernet power manager module 202. The power-consuming device system 210 includes a power-consuming device 209. Both the power supply device 201 and the power-consuming device system 210 have Ethernet sockets 213 / 214 into which the Ethernet cable 211 can be inserted. Therefore, there are four data pairs (A, B, C, and D) in the power-consuming device system 210. The power supply device disclosed herein is not limited to any particular PoE technology or configuration. As those skilled in the art will recognize, any configuration of the wires is possible.

[0046] This disclosure further relates to a computer program having instructions that, when executed by a computing device or computing system, cause the computing device or computing system to perform any embodiment of the currently disclosed method for controlling the output power of a power supply device to an electrical appliance via one or more Ethernet cables. The computer program can be stored on any suitable type of storage medium, such as a non-transitory storage medium.

[0047] This disclosure further relates to a system including a power supply device and a power consumption device. The power consumption device may include at least one camera, a LiDAR, a speaker, or a radar. In the case of a camera, the at least one camera can be any camera, but specifically one or more PTZ cameras. Preferably, the power supply device includes:

[0048] The Power over Ethernet (PoE) manager module is used to power devices via one or more Ethernet cables based on the input power.

[0049] A measuring unit used to directly or indirectly measure the output voltage of power supply equipment;

[0050] A current sensing device used to measure the loop current from an electrical appliance to a power supply device;

[0051] The processing unit is configured as follows:

[0052] Power negotiation is performed between the power supply equipment and the power consumption equipment. Power negotiation includes establishing the relationship between the output voltage of the power supply equipment and the first circuit current.

[0053] Obtain an indication of whether the electrical appliance requires increased power and whether the power supply equipment is of the type capable of delivering the increased power;

[0054] Physically manipulate the current sensing device so that the current sensing device senses the lower loop current being manipulated;

[0055] The power supply equipment is configured to provide a higher output power to the electrical device if the electrical device requires increased power and the power supply equipment is of a type capable of delivering increased power.

[0056] Ethernet power management modules, measurement units, and processing units can be partially or fully integrated, meaning they do not have to be separate units.

[0057] As mentioned above, it is possible to measure the loop current directly or indirectly.

[0058] At least one first shunt resistor may constitute the first shunt resistor. However, the first shunt resistor does not necessarily have to be a single resistor. The at least one operating shunt resistor can then constitute the operating shunt resistor either alone or in parallel with the at least one first shunt resistor. The operating shunt resistor should have a resistance lower than that of the first shunt resistor. The power supply device may further include a switching element, wherein the switching element can be turned on to connect to the operating shunt resistor when increased power is delivered, and wherein the switching element is turned off during the first power negotiation. When the switching element is turned on, loop current can flow through the operating shunt resistor.

[0059] The power supply equipment and / or system may further include peripheral components such as one or more memories that can be used to store instructions executable by any of the processors. The system may further include any of the following: internal and external network interfaces, input and / or output ports, a keyboard or mouse, etc.

[0060] As those skilled in the art will understand, the processing unit can also be a single processor in a multi-core / multi-processor system. Both the computing hardware accelerator and the central processing unit can be connected to the data communication infrastructure.

[0061] The power supply equipment and / or system may include memory such as random access memory (RAM) and / or read-only memory (ROM) or any suitable type of memory. The system may further include a communication interface that allows software and / or data to be transferred between the system and external devices. The software and / or data transferred via the communication interface may be any suitable form of electrical signal, optical signal, or RF signal. The communication interface may include, for example, a cable or wireless interface.

Claims

1. A method for controlling the output power of a power supply device to a power consumption device via one or more Ethernet cables, wherein the power supply device and the power consumption device operate under the Power over Ethernet (PoE) standard, the method comprising: Power negotiation is performed between the power supply equipment and the electrical device, the power negotiation including establishing a relationship between the output voltage of the power supply equipment and the loop current by measuring the loop current from the electrical device to the power supply equipment in a current sensing device in the power supply equipment; Obtain an indication of whether the power consumption device needs to increase its power based on the maximum power intended to be used by the power supply equipment operating under the Power over Ethernet standard, and whether the power supply equipment belongs to a type of power supply equipment capable of delivering the increased power; If the electrical device requires increased power and the power supply equipment is of the type capable of delivering increased power, then the current sensing device is physically manipulated so that the current sensing device senses the manipulated lower loop current. as well as The power supply equipment provides higher output power for operation to the electrical device. The step of performing the power negotiation includes measuring the loop current using a first shunt resistor or an inductor circuit, and The step of physically manipulating the current sensing device includes: When the loop current is measured using the first shunt resistor, a control shunt resistor in the power supply device is activated, wherein the control shunt resistor has a lower resistance than the first shunt resistor; and When the loop current is measured using the inductor circuit, the inductor circuit can be manipulated by increasing the number of windings in the inductor circuit.

2. The method according to claim 1, wherein, The step of activating the controlled shunt resistor includes turning a switch on the controlled shunt resistor.

3. The method according to claim 1 or claim 2, wherein, The steps of obtaining an indication of whether the electrical appliance requires increased power and whether the power supply equipment belongs to the type of power supply equipment capable of delivering increased power include: The electrical appliance receives a request for increased power, and the power supply equipment receives confirmation that it belongs to a type of power supply equipment capable of delivering the increased power; or A proposal to provide increased power is obtained from the power supply equipment, and an acceptance to receive the increased power is obtained from the power consumption device.

4. The method according to claim 1, wherein, If the electrical appliance does not indicate that it is a type that requires additional power, the power supply equipment delivers unmanipulated output power, and If the electrical device indicates that it is a type that requires additional power, the power supply equipment delivers the controlled output power.

5. The method according to claim 1, wherein, According to the Power over Ethernet standard followed by the operation of the power supply equipment, the power supply equipment is limited to delivering a maximum average output power of 90W, and The power supply equipment is manipulated to deliver an average output power of 90W or higher, such as 120W.

6. The method according to claim 1, wherein, The indication of whether the electrical device needs increased power is obtained from the electrical device via software-based communication and / or via communication via one or more Ethernet cables.

7. A computer program storage medium including instructions that, when executed by a computing device or computing system, cause the computing device or computing system to perform the method according to claim 1.

8. A power supply device, the power supply device conforming to the Power over Ethernet standard, comprising: The Power over Ethernet (PoE) manager module is used to power devices via one or more Ethernet cables based on the input power. The measuring unit is used to directly or indirectly measure the output voltage of the power supply equipment; A current sensing device for measuring the loop current from the electrical appliance to the power supply equipment; At least one first shunt resistor and at least one control shunt resistor, the control shunt resistor having a lower resistance than the first shunt resistor or the inductor circuit; as well as The processing unit is configured as follows: A power negotiation is performed between the power supply device and the power consumption device. The power negotiation includes establishing a relationship between the output voltage of the power supply device and the loop current. The establishment includes measuring the loop current using the first shunt resistor or using the inductor circuit. Obtain an indication of whether the power consumption device needs to increase its power based on the maximum power intended to be used by the power supply equipment operating under the Power over Ethernet standard, and whether the power supply equipment belongs to a type of power supply equipment capable of delivering the increased power; By activating the manipulating shunt resistor when the loop current is measured using the first shunt resistor, and by manipulating the inductor circuit by increasing the number of windings in the inductor circuit when the loop current is measured using the inductor circuit, the current sensing device is physically manipulated such that the current sensing device senses the manipulated lower loop current. The power supply equipment is configured to provide a controlled higher output power to the electrical device if the electrical device requires increased power and the power supply equipment is of a type capable of delivering increased power.

9. The power supply equipment according to claim 8, comprising: A switching element, wherein the switching element can be turned on to connect to a shunt resistor when increased power is delivered, and wherein the switching element is turned off during the power negotiation.

10. A system comprising a power supply device according to any one of claims 8 and 9 and an electrical appliance powered by said power supply device.

11. The system according to claim 10, wherein, The electrical device is a camera, LIDAR, speaker, or radar.

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