Power management system

Abstract

A power management system, which can improve the reliability of remote power supply for a slave device (150). The power management system comprises a master device (110), an optical-electrical splitter (120), a first power source (130) and a second power source (140), wherein the first power source (130) is connected to the master device (110), and the master device (110) is connected to the optical-electrical splitter (120); the second power source (140) is connected to the optical-electrical splitter (120), and the optical-electrical splitter (120) is connected to at least one slave device (150); and the optical-electrical splitter (120) is used for, when determining that a power supply anomaly occurs in the second power source (140), controlling the first power source (130) to supply power to the at least one slave device (150).

Description

A power management system

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This disclosure claims priority to Chinese patent application number 202310966357.4, filed on August 2, 2023, entitled “A Power Management System”, the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application relates to the field of broadband optical access technology, and in particular to a power management system. Background Art

[0004] Currently, passive optical network (PON) technology is being used to implement fiber-to-the-room (FTTR) deployment, building upon fiber-to-the-home (FTTH) deployments. This technology can meet the high-speed network coverage needs of internal rooms within businesses or home users. FTTR deployments typically include one all-optical master FTTR device (hereinafter referred to as the master device), multiple all-optical slave FTTR devices (hereinafter referred to as slave devices), and an optoelectronic splitter. Since powering the slave devices is often inconvenient during deployment or requires simplified wiring (such as ceiling-mounted gateways, wireless access points, panel-type access points, and IP surveillance cameras), a power supply connected to the optoelectronic splitter is required to power the slave devices, improving the convenience of FTTR deployment.

[0005] At present, the slave devices are generally powered by centralized power supply through an optoelectronic splitter. Figure 1 is a schematic diagram of a prior art method for remotely powering a slave device. As shown in Figure 1, a power supply connected to an optoelectronic splitter is used to power the slave device, wherein the power supply is an external or built-in power supply of the optoelectronic splitter. The power supply is connected to the electrical splitter of the optoelectronic splitter, and the electrical splitter is then connected to each slave device through a branch optoelectronic composite cable. The electrical splitter controls the power supply in parallel to power at least one slave device. Since the power supply for the slave device is only the power supply connected to the optoelectronic splitter, when the power supply is interrupted, the power supply of each slave device will be affected. Therefore, the existing method of powering the slave devices has the problem of poor reliability.

[0006] Summary of the Invention

[0007] The present application provides a power management system that can improve the reliability of remote power supply to slave devices.

[0008] The present application provides a power management system, which includes a main device, an optoelectronic splitter, a first power supply, and a second power supply;

[0009] The first power supply is connected to the main device, and the main device is connected to the optical / electrical splitter;

[0010] The second power supply is connected to the photoelectric splitter, and the photoelectric splitter is connected to at least one slave device;

[0011] The optoelectronic splitter is used to control the first power supply to supply power to the at least one slave device when it is determined that the power supply of the second power supply is abnormal.

[0012] Furthermore, the photoelectric splitter includes a monitoring processing module and a combining switching module;

[0013] The second power supply is connected to the combining switching module, and the combining switching module is connected to the monitoring processing module and the main device;

[0014] The monitoring processing module is configured to send a power startup instruction to the combining switching module when detecting that the second power supply is interrupted;

[0015] The closing switching module is configured to control the path connecting itself and the master device to close after receiving the power startup instruction, so that the first power supply supplies power to the at least one slave device.

[0016] Furthermore, the monitoring and processing module is further configured to send a power-off instruction to the combining and switching module when detecting that the power supply of the second power supply is restored;

[0017] The combining switching module is further configured to control the path connecting itself to the master device to be disconnected after receiving the power-off instruction, so that the second power supply supplies power to the at least one slave device.

[0018] Furthermore, the monitoring processing module is further configured to send the power startup instruction to the combining switching module when it is detected that the first power supply of the second power supply is less than the power required by the at least one slave device;

[0019] The combining switching module is further configured to control the path connecting itself and the master device to be closed after receiving the power startup instruction, so that the first power supply supplies power to the at least one slave device.

[0020] Furthermore, the photoelectric splitter further includes an independent power supply module, and the independent power supply module includes a plurality of power supply interfaces;

[0021] Any one of the multiple power supply interfaces is connected to a slave device, and the independent power supply module is connected to the combining switching module and the monitoring processing module;

[0022] The independent power supply module is used to monitor the power demand of a slave device connected to any power supply interface, and feed back the power demand of at least one slave device to the monitoring processing module.

[0023] Furthermore, the main device includes a power management unit;

[0024] The first power supply is connected to the power management unit, and the power management unit is connected to the combining switching module;

[0025] The monitoring processing module is further configured to send a power capacity increase instruction to the power management unit, wherein the power capacity increase instruction carries a second power supply amount to be provided by the first power supply;

[0026] The power management unit is configured to, after receiving the power capacity increase instruction, control the first power supply to provide the second power supply to the combining switching module according to the second power supply amount carried in the power capacity increase instruction.

[0027] Furthermore, the monitoring processing module is further configured to send a power capacity increase cancellation instruction to the power management unit when monitoring that the first power supply amount of the second power supply is greater than or equal to the power required by the at least one slave device;

[0028] The power management unit is configured to control the first power supply to stop supplying power to the at least one slave device after receiving the power capacity expansion cancellation instruction.

[0029] Furthermore, the power management unit includes a transceiver processing module and a power supply module;

[0030] The transceiver processing module is connected to the monitoring processing module and the power supply module, and the power supply module is connected to the first power supply and the combining switching module;

[0031] The transceiver processing module is specifically configured to receive the power capacity increase instruction or the power capacity increase cancellation instruction sent by the monitoring processing module;

[0032] The power supply module is specifically used to control the first power supply to provide the second power supply to the combining switching module according to the second power supply carried in the power capacity increase instruction, or to control the first power supply to stop supplying power to the at least one slave device based on the power capacity increase cancellation instruction.

[0033] Furthermore, the combining switching module includes an isolation circuit, a voltage adjustment circuit and a switch control unit;

[0034] The isolation circuit is connected to the monitoring processing module, the switch control unit and the power management unit, the switch control unit is connected to the power management unit and the second power supply, and the voltage adjustment circuit is connected to the switch control unit and the independent power supply module;

[0035] The isolation circuit is used to transmit the power startup instruction and the power shutdown instruction to the switch control unit, and transmit the power capacity increase instruction and the power capacity increase cancellation instruction to the power management unit;

[0036] The voltage adjustment circuit is used to stabilize the voltage of the path between the switch control unit and the independent power supply module;

[0037] The switch control unit is used to control the switch connected between itself and the power management unit to close when receiving the power startup instruction, so that the first power supply supplies power to the at least one slave device, or to control the switch connected between itself and the power management unit to open when receiving the power shutdown instruction, so that the second power supply supplies power to the at least one slave device.

[0038] Furthermore, any power supply interface of the independent power supply module further includes an overvoltage protector and an overcurrent protector;

[0039] The overvoltage protector is used to limit the input voltage of the slave device when the load voltage of the slave device is overloaded;

[0040] The overcurrent protector is used to limit the input current of the slave device when the load current of the slave device is overloaded. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0042] FIG1 is a schematic diagram of a prior art method for remotely powering a slave device according to an embodiment of the present application;

[0043] FIG2a is a schematic diagram of the structure of a power management system provided in an embodiment of the present application;

[0044] FIG2 b is a schematic diagram of the structure of another possible power management system provided in an embodiment of the present application;

[0045] FIG3 is a schematic structural diagram of a combining switching module provided in an embodiment of the present application;

[0046] FIG4 is a schematic diagram of a flow chart of implementing power supply protection when a power supply interface is overvoltage or overcurrent, provided in an embodiment of the present application;

[0047] FIG5 is a schematic diagram of a power management process of a power management system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0048] In order to make the purpose and implementation of this application clearer, the exemplary implementation of this application will be clearly and completely described below in conjunction with the drawings in the exemplary embodiments of this application. Obviously, the described exemplary embodiments are only part of the embodiments of this application, not all of the embodiments.

[0049] It should be noted that the brief descriptions of terms in this application are only for the purpose of facilitating the understanding of the embodiments described below, and are not intended to limit the embodiments of this application. Unless otherwise specified, these terms should be understood according to their ordinary and usual meanings.

[0050] In the specification and claims of this application and the accompanying drawings, the terms "first," "second," "third," etc. are used to distinguish similar or similar objects or textual entities, and are not necessarily intended to limit a particular order or sequential sequence, unless otherwise noted. It should be understood that the terms used in this manner are interchangeable under appropriate circumstances.

[0051] The terms "comprise," "include," and "have," and any variations thereof, are intended to cover but not exclude inclusion; for example, a product or device comprising a list of components is not necessarily limited to all the components expressly listed but may include other components not expressly listed or inherent to such product or device.

[0052] The term "module" refers to any known or later developed hardware, software, firmware, artificial intelligence, fuzzy logic, or combination of hardware and / or software code that is capable of performing the functionality associated with that element.

[0053] In recent years, fiber-to-the-home (FTTH) deployments have reached a considerable scale, carrying high-speed broadband services. However, with the rapid development of high-bandwidth services and the widespread use of mobile wireless hotspots (Wi-Fi) for access, the demand for high-speed coverage within the homes of businesses and homes has gradually increased, raising new requirements for access speed, quality, and continuous reliability. Therefore, building on FTTH deployments, fiber-to-the-room (FTTR) deployments are being implemented using passive optical network (PON) technology, combined with high-speed Wi-Fi components to meet the high-speed network coverage requirements within the homes of businesses and homes.

[0054] However, since it is often inconvenient to power the slave devices or the wiring needs to be simplified during FTTR deployment, it is necessary to remotely power the slave devices to improve the convenience of FTTR deployment.

[0055] Currently, remote power supply for slave devices is generally provided by centralized power supply through an optoelectronic splitter. However, when a power problem occurs with the optoelectronic splitter, such as a power outage, the power supply of each connected slave device will be affected. Therefore, the existing method of remote power supply for slave devices has the problem of poor reliability.

[0056] Based on this, the present application provides a power management system, method, device and storage medium, which can continue to power the slave device through the power supply connected to the master device when a problem occurs with the power supply connected to the optoelectronic splitter, thereby improving the reliability of remote power supply to the slave device.

[0057] FIG2 a is a schematic diagram of the structure of a power management system provided in an embodiment of the present application, which may include: a master device 110, an optical / electrical splitter 120, a first power supply 130, and a second power supply 140;

[0058] The first power supply 130 is connected to the main device 110, and the main device 110 is connected to the optical / electrical splitter 120;

[0059] The second power supply 140 is connected to the optical / electrical splitter 120 , and the optical / electrical splitter 120 is connected to at least one slave device 150 ;

[0060] The optoelectronic splitter 120 is configured to control the first power supply 130 to supply power to the at least one slave device 150 when it is determined that the power supply of the second power supply 140 is interrupted.

[0061] Specifically, in an initial state, the optoelectronic splitter supplies power to at least one slave device via a second power source connected to the splitter. When the optoelectronic splitter determines that the second power source is interrupted, it controls the connection between the splitter and the master device to close, allowing the first power source to power the slave device. The optoelectronic splitter internally includes at least one low-power electronic switch component, such as a relay, a thyristor, or a power transistor. Before the optoelectronic splitter determines that the second power source is abnormal, that is, when the second power source is operating normally, the connection between the first power source and the at least one slave device is disconnected, and the first power source cannot power the slave device.

[0062] Among them, the master device and the optoelectronic splitter can be connected through a trunk optoelectronic composite cable, and the optoelectronic splitter and the slave device can be connected through a branch optoelectronic composite cable. The trunk optoelectronic composite cable and the branch optoelectronic composite cable are a type of optoelectronic composite cable. The optoelectronic composite cable can not only transmit PON optical signals but also provide power to the slave device.

[0063] Furthermore, the optical / electrical splitter 120 includes a monitoring processing module 121 and a combining / switching module 122;

[0064] The second power supply 140 is connected to the combining switching module 122, and the combining switching module 122 is connected to the monitoring processing module 121 and the main device 110;

[0065] The monitoring processing module 121 is configured to send a power startup instruction to the combining switching module 122 when detecting that the second power supply 140 is interrupted;

[0066] The closing switching module 122 is configured to control the path connecting itself and the master device 110 to close after receiving the power startup instruction, so that the first power supply 130 supplies power to the at least one slave device 150 .

[0067] Specifically, the monitoring and processing module can monitor the power supply status of the second power supply in real time, wherein the power supply status of the second power supply can be any one of normal power supply, power supply interruption and insufficient power supply. Normal power supply means that the current power supply of the second power supply is greater than the power demand of all slave devices, insufficient power supply means that the current power supply of the second power supply is lower than the power demand of all slave devices, and power interruption means that the current power supply of the second power supply is zero. When the monitoring and processing module detects that the power supply status of the second power supply is a power interruption, that is, when the power supply of the second power supply is interrupted, a power start instruction is sent to the combining switching module, wherein the power start instruction can be used to instruct the combining switching module to control the closure of the path connecting itself and the master device. After receiving the power start instruction, the combining switching module can close the switch between itself and the master device, thereby enabling the first power supply to supply power to at least one slave device. Before the combining switching module receives the power start instruction, that is, before the second power supply can normally supply power to at least one slave device, the switch between the combining switching module and the master device can be disconnected.

[0068] In order to control the closing or opening of the path connecting the combining switching module and the main device, the combining switching module includes at least one low-power electronic switch component, such as a relay, a thyristor, a power transistor, etc.

[0069] Furthermore, the monitoring processing module 121 is further configured to send a power-off instruction to the combining switching module 122 when detecting that the power supply of the second power supply 140 is restored;

[0070] The combining switching module 122 is further configured to control the path connecting itself to the master device 110 to be disconnected after receiving the power-off instruction, so that the second power supply 140 supplies power to the at least one slave device 150 .

[0071] Specifically, when the monitoring and processing module detects that the power supply of the second power supply has been restored, that is, when the power supply status of the second power supply is switched from power interruption to normal power supply, a power-off instruction is sent to the combining switching module, wherein the power-off instruction is used to instruct the combining switching module to control the path between itself and the master device to be disconnected. After receiving the power-off instruction, the combining switching module can disconnect the switch of the path between itself and the master device, and then stop the first power supply from supplying power to at least one slave device, so that the power supply for at least one slave device is switched back to the second power supply. Since the path between the first power supply and at least one slave device is longer than the path between the second power supply and at least one slave device, the longer the power transmission path, the more energy is consumed. Therefore, when the power supply of the second power supply is restored, switching the first power supply to the second power supply in time can also reduce energy consumption.

[0072] The power-on instruction and the power-off instruction may be transmitted in the form of high and low level signals, for example, a high level "1" represents a power-on instruction, and a low level "0" represents a power-off instruction.

[0073] In a possible implementation, the monitoring and processing module 121 is further configured to send the power startup instruction to the combining switching module 122 when it is detected that the first power supply of the second power supply 140 is less than the power required by the at least one slave device 150;

[0074] The combining switching module 122 is further configured to control the path connecting itself and the master device 110 to be closed after receiving the power startup instruction, so that the first power supply 130 supplies power to the at least one slave device 150 .

[0075] Specifically, the monitoring and processing module can monitor the first power supply of the second power supply and the power requirements of all slave devices connected to the optoelectronic splitter in real time, and when the first power supply of the second power supply is less than the power requirements of the slave devices, that is, when the power supply status of the second power supply is insufficient, a power startup instruction is sent to the combining switching module, wherein the power startup instruction can be used to instruct the combining switching module to control the path between itself and the master device to close. After receiving the power startup instruction, the combining switching module can close the path between itself and the master device, thereby enabling the first power supply to supply power to all slave devices.

[0076] Furthermore, the optical / electrical splitter 120 further includes an independent power supply module 123, and the independent power supply module 123 includes a plurality of power supply interfaces;

[0077] Any power supply interface among the multiple power supply interfaces is connected to a slave device 150, and the independent power supply module 123 is connected to the combining switching module 122 and the monitoring processing module 121;

[0078] The independent power supply module 123 is configured to monitor the power requirements of the slave device 150 connected to any power supply interface, and feed back the power requirements of at least one slave device 150 to the monitoring processing module 121 .

[0079] The independent power supply module may include multiple power supply interfaces, each of which is connected to only one slave device, that is, each power supply interface is responsible for supplying power to only one slave device, and the power supply between any two power supply interfaces will not affect each other.

[0080] Specifically, the independent power supply module can monitor the power requirements of the slave devices connected to any power supply interface and feed back the power requirements of each slave device to the monitoring and processing module. The monitoring and processing module determines the power supply status of the second power supply based on the power requirements of at least one slave device and the first power supply of the second power supply. When the first power supply of the second power supply is less than the power requirements of all slave devices connected to the optoelectronic splitter, it indicates that the power supply status of the second power supply is insufficient, and then sends a power startup instruction to the combining switching module.

[0081] Furthermore, the main device 110 includes the power management unit 111;

[0082] The first power supply 130 is connected to the power management unit 111, and the power management unit 111 is connected to the combining switching module 122;

[0083] The monitoring processing module 121 is further configured to send a power capacity increase instruction to the power management unit 111, wherein the power capacity increase instruction carries the second power supply amount to be provided by the first power supply 130;

[0084] The power management unit 111 is configured to, after receiving the power capacity increase instruction, control the first power supply 130 to provide the second power supply to the combining switching module 122 according to the second power supply amount carried in the power capacity increase instruction.

[0085] Specifically, when the monitoring and processing module detects that the first power supply of the second power supply is less than the power demand of at least one slave device, that is, when the power supply status of the second power supply is insufficient, it is also used to send a power capacity increase instruction to the power management unit, wherein the power capacity increase instruction carries the second power supply that the second power supply needs to provide. After receiving the power capacity increase instruction, the power management unit controls the first power supply to provide the second power supply to the combining switching module according to the second power supply carried in the power capacity increase instruction, and before the power management unit receives the power capacity increase instruction, that is, when the second power supply can normally supply power to all slave devices, the power supply of the first power supply to all slave devices can be zero or other non-zero values. Among them, a power management chip such as a pulse width modulation (PWM) chip is provided in the power management unit, and the power management chip can adjust the power supply provided by the first power supply to the slave device.

[0086] Among them, when the power supply of the first power supply to all slave devices is zero, the second power supply can be determined based on the first power supply and the power requirements of all slave devices, for example, the difference between the power requirements of all slave devices and the first power supply is used as the second power supply; and when the power supply of the first power supply to all slave devices is not zero, the second power supply can be determined based on the first power supply, the power supply of the first power supply and the power requirements of all slave devices, for example, the sum of the first power supply and the power supply of the first power supply is used as the existing power supply of all slave devices, and the difference between the power requirements of all slave devices and the existing power supply is used as the second power supply.

[0087] Furthermore, the monitoring processing module 121 is further configured to send a power capacity increase cancellation instruction to the power management unit 111 when it is detected that the first power supply of the second power supply 140 is greater than or equal to the power required by the at least one slave device 150;

[0088] The power management unit 111 is configured to control the first power supply 130 to stop supplying power to the at least one slave device 150 after receiving the power capacity increase cancellation instruction.

[0089] Specifically, when the monitoring and processing module detects that the first power supply of the second power supply is greater than or equal to the power demand of all slave devices connected to the optoelectronic splitter, that is, when the power supply status of the second power supply switches from insufficient power supply to normal power supply, the monitoring and processing module sends a capacitor capacity increase cancellation instruction to the power management unit. After receiving the capacitor capacity increase cancellation instruction, the power management unit can control the first power supply to stop supplying power to at least one slave device. For example, a PWM chip is provided in the power management unit, and the PWM chip controls the first power supply to the slave device to be zero, thereby stopping the first power supply from supplying power to the slave device.

[0090] Optionally, while the monitoring and processing module sends a power capacity increase cancellation instruction to the power management unit, the monitoring and processing module can also send a power shutdown instruction to the combining switching module, so that when the power management unit controls the first power supply to all slave devices to be zero, the combining switching module also disconnects the switch of the path between itself and the master device.

[0091] In addition, when the combining switching module controls the closing of the path connecting itself to the master device based on the power startup instruction, so that the first power supply can power at least one slave device, the power management unit can also receive the power supply status of the second power supply from the monitoring processing module and adjust the power supply provided by the first power supply to all slave devices based on the power supply status of the second power supply. For example, if the power supply status of the second power supply is power interruption, the power management unit controls the first power supply to provide the required power to all slave devices. If the power supply status of the second power supply is updated from power interruption to normal power supply, the power management unit controls the first power supply to provide zero power to all slave devices.

[0092] Among them, the power-on instruction, power-off instruction, power-increase instruction and power-increase cancellation instruction can be transmitted in the form of coded signals. For example, the code "000" represents the power-on instruction, the code "101" represents the power-off instruction, and the code "100" represents the power-increase instruction.

[0093] Furthermore, the second power supply required to be provided by the first power supply carried in the power capacity increase instruction can also be transmitted in the form of a coded signal. For example, the code "001" represents that the required second power supply is 80% of the current first power supply, the code "010" represents that the required second power supply is 60% of the current first power supply, the code "011" represents that the required second power supply is 40% of the current first power supply, the code "100" represents that the required second power supply is 20% of the current first power supply, and so on.

[0094] In one possible implementation, the power management unit 111 includes a transceiver processing module 1111 and a power supply module 1112; FIG2 b is a schematic diagram of the structure of another possible power management system provided in an embodiment of the present application;

[0095] The transceiver processing module 1111 is connected to the combining switching module 122 and the power supply module 1112, the power supply module 1112 is connected to the first power supply 130 and the combining switching module 122, the combining switching module 122 is connected to the monitoring processing module 121, the second power supply 140 and the independent power supply module 123, and the independent power supply module 123 is connected to the combining switching module 122, the monitoring processing module 121 and the at least one slave device 150;

[0096] The transceiver processing module 1111 is specifically configured to receive the power capacity increase instruction or the power capacity increase cancellation instruction sent by the monitoring processing module 121;

[0097] The power supply module 1112 is specifically used to control the first power supply 130 to provide the second power supply to the combining switching module 122 according to the second power supply carried in the power capacity increase instruction, or to control the first power supply 130 to stop supplying power to the at least one slave device 150 based on the power capacity increase cancellation instruction.

[0098] The power supply module includes at least one power management chip such as a PWM chip, and the power management chip controls the first power supply to supply power to the slave device.

[0099] In addition, the monitoring processing module can also periodically send the code "110" to the transceiver processing module of the power management unit, where the code "110" indicates that the current power supply status of the second power supply is normal power supply, and there is no need to use the first power supply to power the slave device. After the transceiver processing module receives the code "110" for the first time, it can send a power-off instruction to the power supply module, and when it is not the first time to receive the code "110", no processing is required.

[0100] FIG3 is a schematic diagram of the structure of a combining switching module provided in an embodiment of the present application. As shown in FIG3 , the combining switching module may include: an isolation circuit 1221, a voltage adjustment circuit 1222, and a switch control unit 1223;

[0101] The isolation circuit 1221 is connected to the monitoring processing module 121, the switch control unit 1223 and the power management unit 111, the switch control unit 1223 is connected to the power management unit 111 and the second power supply 140, and the voltage adjustment circuit 1222 is connected to the switch control unit 1223 and the independent power supply module 123;

[0102] The isolation circuit 1221 is configured to transmit the power on instruction and the power off instruction to the switch control unit 1223 , and transmit the power capacity increase instruction and the power capacity increase cancellation instruction to the power management unit 111 ;

[0103] The voltage adjustment circuit 1222 is used to stabilize the voltage of the path between the switch control unit 1223 and the independent power supply module 123;

[0104] The switch control unit 1223 is used to control the switch connected between itself and the power management unit 111 to close when receiving the power start instruction, so that the first power supply supplies power to the at least one slave device, or to control the path connected between itself and the power management unit 111 to disconnect when receiving the power shutdown instruction, so that the second power supply supplies power to the at least one slave device.

[0105] The switch control unit includes at least one low-power electronic switch component, such as a relay, a thyristor, a power transistor, etc. The switch control unit may also include a receiver and a processor, wherein the receiver is used to receive a power start instruction or a power shutoff instruction, and the processor is used to respond to the power start instruction and control the switch connected between the switch and the power management unit to close, or respond to the power shutoff instruction and control the switch connected between the switch and the power management unit to close or open. Because the path between the first power supply and the switch control unit is longer than the path between the second power supply and the switch control unit, the longer the power transmission path, the more unstable the voltage of the first power supply when it is transmitted to the switch control unit. Therefore, a voltage adjustment circuit can be provided in the combining switching module. The voltage adjustment circuit can be used to stabilize the voltage of the path between the switch control unit 1223 and the independent power supply module 123, that is, the voltage after passing through the voltage adjustment circuit is stabilized within the normal operating voltage range required by the independent power supply module. The voltage adjustment circuit can adopt existing technology and will not be described in detail here.

[0106] In addition, in addition to monitoring the power requirements of the slave devices connected to any power supply interface and feeding back the power requirements of each slave device to the monitoring and processing module, the independent power supply module can also be configured with an integrated chip such as a power management chip, so that when the independent power supply module detects that any power supply interface cannot meet the power requirements of the slave device connected to it, it will reallocate the power received from the second power supply or the first power supply. Moreover, since the independent power supply module includes multiple power supply interfaces, each power supply interface is only responsible for the power supply of one slave device, and the power supply between any two power supply interfaces will not affect each other, which can further improve the safety and stability of the power supply.

[0107] Furthermore, in order to improve power supply safety, any power supply interface of the independent power supply module 123 further includes an overvoltage protector 1231 and an overcurrent protector 1232;

[0108] The overvoltage protector 1231 is used to limit the input voltage of the slave device 150 when the load voltage of the slave device 150 is overloaded;

[0109] The overcurrent protector 1232 is used to limit the input current of the slave device 150 when the load current of the slave device 150 is overloaded.

[0110] An overvoltage protector can be a Zener diode circuit, a transient voltage suppressor (TVS) diode, or an integrated circuit chip. The Zener diode circuit can provide steady-state pulse voltage protection by selecting appropriate resistors, capacitors, and Zener diode voltage and current values; the transient diode can provide transient surge voltage and current protection by selecting appropriate protection values; and a properly configured integrated circuit chip can limit overload voltage. When the input voltage of a slave device experiences a transient surge or a prolonged pulse increase, these devices can limit the input voltage to its highest stable value, such as 56V, keeping the slave device's input voltage at a safe operating value.

[0111] An overcurrent protector can be a positive temperature coefficient (PTC) thermistor circuit, a resistor-capacitor relay, a thyristor combination circuit, or an integrated circuit chip. A PTC thermistor circuit provides steady-state current protection by selecting appropriate resistance, power, and operating current values. A resistor-capacitor relay or thyristor combination circuit provides instantaneous inrush current protection by selecting appropriate operating current and maximum current protection values. A properly configured integrated circuit chip can limit overload current. When a device experiences a transient surge in input current or a prolonged overload, these devices can limit the input current to a maximum stable value, such as 0.5A, keeping the device's input current at a safe operating value and overheating within a controllable range.

[0112] Optionally, light emitting diodes of different colors may be configured on the overvoltage protector or the overcurrent protector, and the flashing state of the light emitting diodes may be used to remind the user whether any slave device has a load voltage overload or a load current overload.

[0113] In addition, the overvoltage protector and the overcurrent protector can use recoverable components, so that when the load voltage or load current of the slave device returns to normal, the overvoltage protector and the overcurrent protector can automatically return to normal working state, avoiding additional replacement cost expenses.

[0114] FIG4 is a flow chart of a method for implementing power supply protection when the power supply interface is overvoltage or overcurrent, provided in an embodiment of the present application. As shown in FIG4,

[0115] S401: The load voltage and load current of the slave device are normal.

[0116] In the initial state, the load voltage and load current of the slave device of any power supply interface are normal, the overvoltage protector and overcurrent protector work normally, and do not limit the input voltage and input current of the slave device.

[0117] S4021: If the overvoltage protector detects that the load voltage of the slave device is overloaded, it limits the input voltage of the slave device.

[0118] S4031: If the overvoltage protector detects that the load voltage of the slave device has returned to normal, the input voltage of the slave device is restricted.

[0119] At this point, the load voltage of the slave device returns to normal, and the process returns to S401.

[0120] S4022: If the overcurrent protector detects that the load current of the slave device is overloaded, it limits the input current of the slave device.

[0121] S4032: If the overcurrent protector detects that the load current of the slave device has returned to normal, it will cancel the restriction on the input current of the slave device.

[0122] At this point, the load current of the slave device returns to normal, and the process returns to S401.

[0123] FIG5 is a schematic diagram of a power management process of a power management system provided in an embodiment of the present application. As shown in FIG5 , the process includes:

[0124] S501: Use a second power supply to supply power to at least one slave device.

[0125] The optoelectronic splitter is connected to at least one slave device and a second power supply. The second power supply is in a normal power supply state, and the second power supply is used to power the at least one slave device. The optoelectronic splitter includes at least a monitoring processing module and a monitoring processing module.

[0126] The optoelectronic splitter can also periodically send the power supply status of the second power supply to the master device, where the power supply status of the second power supply is normal power supply, and the power management unit of the master device controls the first power supply to provide zero power to all slave devices.

[0127] Execute S502 or execute S507.

[0128] S502: The monitoring processing module monitors whether the power supply of the second power supply is interrupted.

[0129] If interrupted, execute S503; if not interrupted, execute S507.

[0130] S503: The combining switching module controls the closing of the path connecting itself and the master device.

[0131] When the monitoring and processing module of the optoelectronic splitter detects that the second power supply is interrupted, it sends a power start instruction to the combining switching module. After receiving the power start instruction, the combining switching module controls the path connecting itself and the master device to close, so that the first power supply supplies power to at least one slave device.

[0132] The monitoring and processing module can also send the power supply status of the second power supply to the power management unit of the master device, where the power supply status of the second power supply is power interruption at this time, and the power management unit of the master device controls the first power supply to provide all slave devices with the required power.

[0133] S504: The monitoring processing module monitors whether the power supply of the second power supply is restored.

[0134] If recovered, execute S506; if not recovered, execute S505.

[0135] S505: Continue to use the first power supply to supply power to at least one slave device.

[0136] S506: The combining switching module controls the path between itself and the master device to be disconnected.

[0137] When the monitoring and processing module of the optoelectronic splitter detects that the second power supply is interrupted, it sends a power-off instruction to the combining switching module. After receiving the power-off instruction, the combining switching module controls the path connecting itself to the master device to be disconnected, so that the second power supply supplies power to at least one slave device.

[0138] The optoelectronic splitter can also send the updated power supply status of the second power supply to the power management unit of the master device, where the updated power supply status of the second power supply is updated from power interruption to normal power supply, and the power management unit of the master device controls the first power supply to provide zero power to all slave devices.

[0139] Return to S501.

[0140] S507: The monitoring processing module monitors whether the first power supply of the second power supply is greater than or equal to the power required by at least one slave device.

[0141] If yes, go back to S501; if no, go to S508.

[0142] S508: The monitoring processing module sends a power capacity increase instruction to the power management unit. After receiving the power capacity increase instruction, the power management unit controls the first power supply to provide the second power supply to the combining switching module according to the second power supply amount carried in the power capacity increase instruction.

[0143] Before sending the power capacity increase instruction to the main device, the monitoring processing module may also send a power start instruction to the combining switching module. After receiving the power start instruction, the combining switching module controls the path connecting itself and the main device to be closed.

[0144] S509: The monitoring processing module continues to monitor whether the first power supply of the second power source is greater than or equal to the power required by at least one slave device.

[0145] If yes, execute S5011; if no, execute S5010.

[0146] S5010: Continue to use the first power supply to provide the second power supply to the combining switching module.

[0147] S5011: The monitoring processing module sends a power capacity increase cancellation instruction to the power management unit. After receiving the power capacity increase cancellation instruction, the power management unit controls the first power supply to stop supplying power to at least one slave device.

[0148] Return to S501.

[0149] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.

[0150] For ease of explanation, the above description has been made with reference to specific embodiments. However, the above exemplary discussion is not intended to be exhaustive or to limit the embodiments to the specific forms disclosed above. Based on the above teachings, various modifications and variations are possible. The above embodiments are selected and described to better explain the principles and practical applications, so that those skilled in the art can better utilize the embodiments and various different variations of the embodiments suitable for specific use considerations.

[0151] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0152] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0153] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the present application. It should be understood that each flow and / or box in the flow chart and / or block diagram, as well as the combination of the flow chart and / or box in the flow chart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device produce a device for implementing the functions specified in one or more flow charts and / or one or more boxes in the block diagram.

[0154] These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce a product including an instruction device that implements the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0155] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, so that the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram. Industrial Applicability

[0156] The present disclosure is applicable to the field of broadband optical access technology, and is used to solve the problem of poor reliability of the power supply mode of the slave device in the related technology. The power supply connected to the master device continues to power the slave device, thereby improving the reliability of remote power supply to the slave device.

[0157] Obviously, those skilled in the art may make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is intended to include these modifications and variations.

Claims

1. A power management system, comprising a main device, an optoelectronic splitter, a first power supply, and a second power supply; The first power supply is connected to the main device, and the main device is connected to the photoelectric splitter; The second power supply is connected to the photoelectric splitter, and the photoelectric splitter is connected to at least one slave device; The optoelectronic splitter is used to control the first power supply to supply power to the at least one slave device when it is determined that the power supply of the second power supply is abnormal.

2. The system according to claim 1, wherein: The photoelectric splitter includes a monitoring processing module and a combining switching module; The second power supply is connected to the combining switching module, and the combining switching module is connected to the monitoring processing module and the main device; The monitoring processing module is used to send a power supply startup instruction to the combining switching module when detecting that the second power supply is interrupted; The closing switching module is used to control the path connecting itself and the master device to close after receiving the power startup instruction, so that the first power supply can supply power to the at least one slave device.

3. The system according to claim 2, wherein: The monitoring processing module is further configured to send a power shut-down instruction to the combining switching module when detecting that the power supply of the second power supply is restored; The combining switching module is further used to control the path connecting itself and the master device to be disconnected after receiving the power off instruction, so that the second power supply can supply power to the at least one slave device.

4. The system according to claim 2, wherein: The monitoring processing module is further configured to send the power startup instruction to the combining switching module when it is detected that the first power supply of the second power supply is less than the power required by the at least one slave device; The closing switching module is further used to control the closing of the path connecting itself and the master device after receiving the power startup instruction, so that the first power supply can supply power to the at least one slave device.

5. The system according to claim 4, wherein: The optoelectronic splitter further comprises an independent power supply module, and the independent power supply module comprises a plurality of power supply interfaces; Any power supply interface among the multiple power supply interfaces is connected to a slave device, and the independent power supply module is connected to the combining switching module and the monitoring processing module; The independent power supply module is used to monitor the power demand of the slave device connected to any power supply interface, and feed back the power demand of at least one slave device to the monitoring processing module.

6. The system according to claim 5, wherein: The main device includes a power management unit; The first power supply is connected to the power management unit, and the power management unit is connected to the combining switching module; The monitoring processing module is further used to send a power capacity increase instruction to the power management unit, wherein the power capacity increase instruction carries a second power supply amount to be provided by the first power supply; The power management unit is used to control the first power supply to provide the second power supply to the combining switching module according to the second power supply carried in the power capacity increase instruction after receiving the power capacity increase instruction.

7. The system according to claim 6, wherein: The monitoring processing module is further configured to send a power capacity increase cancellation instruction to the power management unit when monitoring that the first power supply of the second power supply is greater than or equal to the power required by the at least one slave device; The power management unit is used to control the first power supply to stop supplying power to the at least one slave device after receiving the power capacity increase cancellation instruction.

8. The system according to claim 7, wherein: The power management unit includes a transceiver processing module and a power supply module; The transceiver processing module is connected to the combining switching module and the power supply module, and the power supply module is connected to the first power supply and the combining switching module; The transceiver processing module is specifically used to receive the power capacity increase instruction or the power capacity increase cancellation instruction sent by the monitoring processing module; The power supply module is specifically used to control the first power supply to provide the second power supply to the combining switching module according to the second power supply carried in the power capacity increase instruction, or to control the first power supply to stop supplying power to the at least one slave device based on the power capacity increase cancellation instruction.

9. The system according to claim 7, wherein: The combining switching module includes an isolation circuit, a voltage adjustment circuit and a switch control unit; The isolation circuit is connected to the monitoring processing module, the switch control unit and the power management unit, the switch control unit is connected to the power management unit and the second power supply, and the voltage adjustment circuit is connected to the switch control unit and the independent power supply module; The isolation circuit is used to transmit the power startup instruction and the power shutdown instruction to the switch control unit, and transmit the power capacity increase instruction and the power capacity increase cancellation instruction to the power management unit; The voltage adjustment circuit is used to stabilize the voltage of the path between the switch control unit and the independent power supply module; The switch control unit is used to control the switch connected between itself and the power management unit to close when receiving the power startup instruction, so that the first power supply can power the at least one slave device, or to control the switch connected between itself and the power management unit to open when receiving the power shutdown instruction, so that the second power supply can power the at least one slave device.

10. The system according to claim 5, wherein: Any power supply interface of the independent power supply module also includes an overvoltage protector and an overcurrent protector; The overvoltage protector is used to limit the input voltage of the slave device when the load voltage of the slave device is overloaded; The overcurrent protector is used to limit the input current of the slave device when the load current of the slave device is overloaded.

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