CN116054960A - PoE power supply-based visible light communication system power control method and system - Google Patents

PoE power supply-based visible light communication system power control method and system Download PDF

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Publication number
CN116054960A
CN116054960A CN202310344887.5A CN202310344887A CN116054960A CN 116054960 A CN116054960 A CN 116054960A CN 202310344887 A CN202310344887 A CN 202310344887A CN 116054960 A CN116054960 A CN 116054960A
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power
visible light
communication system
module
light communication
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CN116054960B (en
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王玉皞
胡键
陈煊邦
王谦
王正海
余礼苏
向斌
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Nanchang University
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Nanchang University
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/80—Optical aspects relating to the use of optical transmission for specific applications, not provided for in groups H04B10/03 - H04B10/70, e.g. optical power feeding or optical transmission through water
    • H04B10/806—Arrangements for feeding power
    • H04B10/808—Electrical power feeding of an optical transmission system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
    • H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
    • H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
    • H04B10/0793—Network aspects, e.g. central monitoring of transmission parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/07—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems
    • H04B10/075—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal
    • H04B10/079—Arrangements for monitoring or testing transmission systems; Arrangements for fault measurement of transmission systems using an in-service signal using measurements of the data signal
    • H04B10/0795—Performance monitoring; Measurement of transmission parameters
    • H04B10/07955—Monitoring or measuring power
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
    • H04B10/114—Indoor or close-range type systems
    • H04B10/116—Visible light communication
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Communication System (AREA)

Abstract

The invention provides a visible light communication system power control method and system based on PoE power supply, the method includes that when the system detects PSE access signal, the maximum power supply power is determined through a preset PoE detection circuit; when a user acquires network service of the system, a communication module in the system detects communication throughput in the current time period, and judges and determines the working mode of the system with a preset communication throughput threshold; judging whether the power supply power of the communication module meets the working power or not through a real-time power calculation module in a preset main controller; if the communication modules are not matched, the input power of the communication modules is adjusted through the preset communication power control module according to a preset control strategy, so that the communication modules are continuously in a matched working mode. By the method, the communication service of the user can be used as the priority, the switching under different working modes is realized, the energy consumption of the visible light communication system is greatly reduced, and the method is beneficial to large-scale use.

Description

PoE power supply-based visible light communication system power control method and system
Technical Field
The invention relates to the technical field of visible light communication, in particular to a power control method and a power control system of a visible light communication system based on PoE power supply.
Background
The visible light communication technology (Visible Light Communication, VLC) refers to a communication mode of directly transmitting optical signals in air by using light in a visible light wave band as an information carrier, and has the advantages of being green, low-carbon, capable of realizing near zero energy consumption communication, capable of effectively avoiding weaknesses such as radio communication electromagnetic signal leakage and the like, and rapidly constructing an anti-interference and anti-interception safety information space.
Most intelligent lighting systems of LEDs are realized only through PoE power supply, communication capability of the LEDs is not fully utilized, and the purpose of communication and lighting integration is achieved. Meanwhile, in the prior art, various main stream interfaces are required to be considered to adapt to different system power consumption modes to support various PoE power budgets, and switching between low-speed communication power for illumination and high-speed communication power for illumination in visible light communication is required to be met, so that the power of an output device cannot be effectively distributed by the existing PSE (Power Sourcing Equipment, power supply equipment) equipment, and therefore power waste is caused, and energy consumption of a visible light communication system is further increased.
Disclosure of Invention
Based on the above, the invention aims to provide a power control method and a power control system for a visible light communication system based on PoE power supply, which solve a set of visible light communication system integrating illumination and communication by utilizing the illumination and communication characteristics of LEDs, and simultaneously solve the problems that various main stream interfaces need to be considered to adapt to different system power consumption modes to support various PoE power budgets, and the switching between low-speed communication power of illumination and high-speed communication power of illumination in visible light communication is satisfied, and the existing PSE equipment cannot effectively distribute power to output equipment, so that the power waste is caused, and the energy consumption of the visible light communication system is increased.
An embodiment of the present invention provides a method for controlling power of a visible light communication system based on PoE power supply, which is applied to the visible light communication system, and the method includes:
when an access signal of PSE equipment is detected, detecting a PoE type standard corresponding to the PSE equipment through a preset PoE detection circuit, and determining the maximum power supply of the PSE equipment according to the PoE type standard;
when a user acquires network service of the visible light communication system, detecting communication throughput in a preset time period through a communication module in the visible light communication system, and comparing the communication throughput with a preset communication throughput threshold value to determine a corresponding working mode of the visible light communication system;
determining the working power corresponding to the communication module in the visible light communication system according to the working mode, and judging whether the power supply power meets the working power or not through a real-time power calculation module;
and if the real-time power calculation module judges that the power supply power and the working power are not satisfied, the power control circuit adjusts the input power of the communication module according to a preset control strategy so as to enable the communication module to be in a matched working mode continuously.
The beneficial effects of the invention are as follows: when an access signal of PSE equipment is detected, detecting a PoE type standard corresponding to the PSE equipment through a preset PoE detection circuit, and determining the maximum power supply power provided by the PSE equipment according to the PoE type standard; further, a communication module preset in the system detects the communication throughput of the visible light communication system in the current time period, and determines a working mode corresponding to the system according to the current communication throughput and a preset communication throughput threshold; on the basis, determining the working power corresponding to a communication module in a visible light communication system according to a working mode, and judging whether the power supply power meets the working power or not through a real-time power calculation module; specifically, if the real-time power calculation module judges that the power supply power is not matched with the working power, the input power of the communication module is adjusted through the communication power control module in the preset adjustment module according to a preset control strategy, so that the communication module is continuously in a matched working mode. According to the method, on the premise that normal illumination of the LED is guaranteed, the power of the visible light communication system can be correspondingly controlled through the requirement of the communication rate of the user as the first priority of the system, meanwhile, the method is high in universality, overflow and deficiency of throughput of the visible light communication are considered at the same time, corresponding control is carried out through the modes of changing input power, disabling idling, disabling interfaces and the like, so that the use and switching of various working modes of the user can be met, energy consumption of the visible light communication system is greatly reduced, and large-scale use of the visible light communication system is facilitated.
Preferably, the preset communication throughput threshold includes a first preset threshold and a second preset threshold, and the first preset threshold is greater than the second preset threshold, and the step of comparing the communication throughput with the preset communication throughput threshold to determine the working mode corresponding to the visible light communication system includes:
judging whether the communication throughput is between the first preset threshold value and the second preset threshold value;
if the communication throughput is judged to be larger than the first preset threshold value, detecting that the communication throughput is in a supersaturated state, and judging that the communication module is in an efficient mode;
if the communication throughput is judged to be between the first preset threshold value and the second preset threshold value, detecting that the communication throughput is in a saturated state, and judging that the communication module is in a standard mode;
and if the communication throughput is judged to be smaller than the second preset threshold value, detecting that the communication throughput is in an unsaturated state, and judging that the communication module is in an energy-saving mode.
Preferably, the method further comprises:
when the communication module is judged to be in the high-efficiency mode, calculating the residual power in the visible light communication system through the real-time power calculation module, and when the calculated residual power meets the condition that the communication module is in the high-efficiency mode, improving the input power of the visible light communication system;
When the residual power is calculated to not meet the condition that the communication module is in the high-efficiency mode, closing a secondary module in the visible light communication system through a main controller, and changing the voltage in the communication module into a high-efficiency working voltage value through the power control circuit so as to enable the power supply power to meet the adjusted working power;
the secondary module represents an access point with other functions in the visible light communication system on the premise of maintaining the normal operation of the communication module.
Preferably, the method further comprises:
when the communication module is judged to be in the high-efficiency mode and the power supply power is judged to be larger than the working power, the voltage in the communication module is changed to a standard working voltage value again through the power control circuit, and a plurality of corresponding secondary modules are started through the main controller so that the power supply power meets the adjusted working power;
each communication module comprises a signal transmitting end and a signal receiving end, each signal transmitting end is connected with an LED, and each signal receiving end is connected with a signal receiving port.
Preferably, the method further comprises:
when the communication module is judged to be in the standard mode, calculating the residual power in the visible light communication system through the real-time power calculation module, and when the residual power meets the condition that the visible light communication system is in the standard mode, increasing the input power of the visible light communication system;
when the residual power does not meet the standard mode of the visible light communication system, closing part or all of the secondary modules in the visible light communication system through the main controller, and changing the voltage in the communication module into the standard working voltage value again through the power control circuit so that the power supply power meets the adjusted working power.
Preferably, the method further comprises:
when the communication module is judged to be in the standard mode and the power supply power is judged to be larger than the working power, the voltage in the communication module is changed into an energy-saving working voltage value through the power control circuit, and a plurality of corresponding secondary modules are started through the main controller so that the power supply power meets the adjusted working power.
Preferably, the method further comprises:
when the communication module is judged to be in the energy-saving mode, calculating the residual power in the visible light communication system through the real-time power calculation module, and when the residual power meets the requirement that the visible light communication system is in the energy-saving mode, increasing the input power in the visible light communication system;
when the residual power does not meet the requirement that the visible light communication system is in the energy-saving mode, closing part or all secondary modules in the visible light communication system through the main controller, and changing the voltage in the communication module to the energy-saving working voltage value again through the power control circuit so that the power supply power meets the regulated working power.
Preferably, the method further comprises:
when the communication module is judged to be in the energy-saving mode and the power supply power is judged to be larger than the working power, the voltage in the communication module is changed to the energy-saving working voltage value again through the power control circuit, and a plurality of corresponding secondary modules are started through the main controller so that the power supply power meets the adjusted working power.
A second aspect of an embodiment of the present invention provides a power control system for a visible light communication system based on PoE power supply, which is applied to the visible light communication system, and the system includes:
the detection module is used for detecting a PoE type standard corresponding to PSE equipment through a preset PoE detection circuit when an access signal of the PSE equipment is detected, and determining power supply corresponding to the PSE equipment according to the PoE type standard;
the processing module is used for detecting the communication throughput of the visible light communication system in the current time period and determining the working mode corresponding to the visible light communication system according to the communication throughput;
the judging module is used for determining the working power corresponding to the communication module in the visible light communication system according to the working mode, and judging whether the power supply power is equal to the working power or not through the real-time power calculating module;
and the adjusting module is used for adjusting the input power of the communication module through the power control circuit according to a preset control strategy if the real-time power calculation module judges that the power supply power and the working power are not met, so that the communication module is continuously in a matched working mode.
In the above power control system for a visible light communication system based on PoE power supply, the preset communication throughput threshold includes a first preset threshold and a second preset threshold, and the first preset threshold is greater than the second preset threshold, and the processing module is specifically configured to:
judging whether the communication throughput is between the first preset threshold value and the second preset threshold value;
if the communication throughput is judged to be larger than the first preset threshold value, detecting that the communication throughput is in a supersaturated state, and judging that the communication module is in an efficient mode;
if the communication throughput is judged to be between the first preset threshold value and the second preset threshold value, detecting that the communication throughput is in a saturated state, and judging that the communication module is in a standard mode;
and if the communication throughput is judged to be smaller than the second preset threshold value, detecting that the communication throughput is in an unsaturated state, and judging that the communication module is in an energy-saving mode.
In the above power-over-PoE-based power control system for a visible light communication system, the power control system for a PoE-based power supply further includes a first execution module, where the first execution module is specifically configured to:
When the communication module is judged to be in the high-efficiency mode, calculating the residual power in the visible light communication system through the real-time power calculation module, and when the calculated residual power meets the condition that the communication module is in the high-efficiency mode, improving the input power of the visible light communication system;
when the residual power is calculated to not meet the condition that the communication module is in the high-efficiency mode, closing a secondary module in the visible light communication system through a main controller, and changing the voltage in the communication module into a high-efficiency working voltage value through the power control circuit so as to enable the power supply power to meet the adjusted working power;
the secondary module represents an access point with other functions in the visible light communication system on the premise of maintaining the normal operation of the communication module.
In the above power control system for a visible light communication system based on PoE power supply, the first execution module is further specifically configured to:
when the communication module is judged to be in the high-efficiency mode and the power supply power is judged to be larger than the working power, the voltage in the communication module is changed to a standard working voltage value again through the power control circuit, and a plurality of corresponding secondary modules are started through the main controller so that the power supply power meets the adjusted working power;
Each communication module comprises a signal transmitting end and a signal receiving end, each signal transmitting end is connected with an LED, and each signal receiving end is connected with a signal receiving port.
In the above power-over-PoE-based power control system for a visible light communication system, the power control system for a PoE-based power supply further includes a second execution module, where the second execution module is specifically configured to:
when the communication module is judged to be in the standard mode, calculating the residual power in the visible light communication system through the real-time power calculation module, and when the residual power meets the condition that the visible light communication system is in the standard mode, increasing the input power of the visible light communication system;
when the residual power does not meet the standard mode of the visible light communication system, closing part or all of the secondary modules in the visible light communication system through the main controller, and changing the voltage in the communication module into the standard working voltage value again through the power control circuit so that the power supply power meets the adjusted working power.
In the above power control system for a visible light communication system based on PoE power supply, the second execution module is further specifically configured to:
when the communication module is judged to be in the standard mode and the power supply power is judged to be larger than the working power, the voltage in the communication module is changed into an energy-saving working voltage value through the power control circuit, and a plurality of corresponding secondary modules are started through the main controller so that the power supply power meets the adjusted working power.
In the above power-over-PoE-based power control system for a visible light communication system, the power control system for a PoE-based power supply further includes a third execution module, where the third execution module is specifically configured to:
when the communication module is judged to be in the energy-saving mode, calculating the residual power in the visible light communication system through the real-time power calculation module, and when the residual power meets the requirement that the visible light communication system is in the energy-saving mode, increasing the input power in the visible light communication system;
when the residual power does not meet the requirement that the visible light communication system is in the energy-saving mode, closing part or all secondary modules in the visible light communication system through the main controller, and changing the voltage in the communication module to the energy-saving working voltage value again through the power control circuit so that the power supply power meets the regulated working power.
In the above power control system for a visible light communication system based on PoE power supply, the third execution module is further specifically configured to:
when the communication module is judged to be in the energy-saving mode and the power supply power is judged to be larger than the working power, the voltage in the communication module is changed to the energy-saving working voltage value again through the power control circuit, and a plurality of corresponding secondary modules are started through the main controller so that the power supply power meets the adjusted working power.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
Fig. 1 is a flowchart of a method for controlling power of a PoE-powered-based visible light communication system according to a first embodiment of the present invention;
fig. 2 is a process flow diagram of a method for controlling power of a PoE-based power source visible light communication system according to a first embodiment of the present invention;
fig. 3 is a block diagram of a power control system of a PoE-based power supply visible light communication system according to a second embodiment of the present invention;
fig. 4 is a flowchart of a real-time power calculation module in a power control system of a PoE-based power-supplied visible light communication system according to a second embodiment of the present invention;
Fig. 5 is a block diagram of a power control system of a PoE-based power supply visible light communication system according to a second embodiment of the present invention.
The invention will be further described in the following detailed description in conjunction with the above-described figures.
Detailed Description
In order that the invention may be readily understood, a more complete description of the invention will be rendered by reference to the appended drawings. Several embodiments of the invention are presented in the figures. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "mounted" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.
In the prior art, most of the power supply and communication functions of the visible light communication system are realized through a PoE power supply mode, however, as the prior art needs to consider that a plurality of main stream interfaces are adapted to different system power consumption modes to support various PoE power budgets, and meanwhile, the switching between low-speed communication power of illumination and high-speed communication power of illumination in visible light communication needs to be met, the prior PSE (Power Sourcing Equipment, power supply equipment) equipment cannot effectively distribute power to output equipment, thereby causing power waste and further increasing energy consumption of the visible light communication system.
Referring to fig. 1, a power control method of a visible light communication system based on PoE power supply according to a first embodiment of the present invention is shown, where the power control method of the visible light communication system based on PoE power supply according to the present embodiment can perform corresponding control on power of the visible light communication system by comparing requirements of user communication rate on the premise of ensuring normal illumination of LEDs, and meanwhile, the present invention can be used under different PoE standards, which is highly interesting and versatile, and also can consider overflow and deficiency of throughput of visible light communication at the same time, and perform corresponding control by changing input power, disabling idle, disabling interfaces, etc., so as to satisfy use and switching in various working modes of users, thereby greatly reducing energy consumption of the visible light communication system and facilitating large-scale use of the visible light communication system.
Specifically, the method for controlling power of the visible light communication system based on PoE power supply provided in the present embodiment is applied to the visible light communication system, and the method specifically includes the following steps:
step S10, when an access signal of PSE equipment is detected, detecting a PoE type standard corresponding to the PSE equipment through a preset PoE detection circuit, and determining the maximum power supply of the PSE equipment according to the PoE type standard;
in particular, in this embodiment, it should be first noted that, the method for controlling power of the visible light communication system provided in this embodiment may be applied to different types of visible light communication systems at the same time, so as to adjust power consumption in the visible light communication system in real time, so as to correspondingly reduce energy consumption of the visible light communication system, which is beneficial to large-scale use of the visible light communication system.
Further, it should be noted that, the method for controlling power of the visible light communication system provided in this embodiment is implemented based on PoE (power over ethernet) of the new generation communication interface, and the communication interface provided in this embodiment can meet the existing IEEE 802.3bt, IEEE 802.3at or IEEE 802.3af standard, and meanwhile, the interfaces in the secondary module provided in this embodiment include USB (Universal Serial Bus) peripheral, external module port, CPU (Central Processing Unit) throughput adjustment and other functions consuming more power.
In addition, in this embodiment, it should also be noted that, on the premise that the performance of visible light communication is not affected, when the power of the visible light communication system cannot meet the requirement that the communication interface performs full-function operation, some functions in the current communication interface can be closed, so that the interface can continuously operate under the available budget of PoE.
Therefore, in this step, as shown in fig. 3, when the access signal of the PSE device is detected in real time in this step, this step immediately detects, through a PoE detection circuit set in advance, a PoE type standard corresponding to the current PSE device, that is, the above IEEE 802.3bt, IEEE 802.3at, or IEEE 802.3af standard, and then, further determines the power supply corresponding to the current PSE device according to the above PoE type standard.
Step S20, when a user obtains the network service of the visible light communication system, detecting the communication throughput in a preset time period through a communication module in the visible light communication system, and comparing the communication throughput with a preset communication throughput threshold value to determine a working mode corresponding to the visible light communication system;
Further, in this step, it should be noted that after detecting that there is an access of the PSE device through the above step, the visible light communication system may be started, and on the basis of this step, the communication throughput, that is, the data amount of communication, generated by the current visible light communication system in a period of time may be further detected, and further, this step further determines, according to the collected communication throughput, the working mode corresponding to the current visible light communication system. Preferably, in this embodiment, the above time period may be set to 10 seconds or 1 minute, and the like, which are all within the protection scope of this embodiment.
Step S30, determining the working power corresponding to the communication module in the visible light communication system according to the working mode, and judging whether the power supply power meets the working power or not through a real-time power calculation module;
further, in this embodiment, it should be noted that, after determining the operation mode of the current visible light communication system through the above steps, the step further detects the operation power corresponding to the communication module in the current visible light communication system according to the determined operation mode, and on the basis of this, the step further determines whether the above power supply power meets the operation power detected in real time through a preset real-time power calculation module.
And step S40, if the real-time power calculation module judges that the power supply power and the working power are not satisfied, the power control circuit adjusts the input power of the communication module according to a preset control strategy so as to enable the communication module to be in a matched working mode continuously.
Finally, in this step, it should be noted that, if the power calculation module determines that the power supply power does not match the working power in real time, then the preset power control circuit adjusts the input power of the communication module according to the preset control policy, so that the current communication module is continuously in the matched working mode, the priority of the visible light communication system for providing communication service for the client is ensured, and meanwhile, the energy consumption of the current visible light communication system can be reduced in the dynamic working mode.
In this embodiment, it should be noted that, the step of determining, according to the communication throughput, the corresponding working mode of the communication module includes:
judging whether the communication throughput is between the first preset threshold value and the second preset threshold value;
If the communication throughput is judged to be larger than the first preset threshold value, detecting that the communication throughput is in a supersaturated state, and judging that the communication module is in an efficient mode;
if the communication throughput is judged to be between the first preset threshold value and the second preset threshold value, detecting that the communication throughput is in a saturated state, and judging that the communication module is in a standard mode;
and if the communication throughput is judged to be smaller than the second preset threshold value, detecting that the communication throughput is in an unsaturated state, and judging that the communication module is in an energy-saving mode.
Further, in this embodiment, it should be noted that, in order to accurately determine the working mode of the communication module in the above-mentioned visible light communication system, in this embodiment, a first preset threshold value and a second preset threshold value are preset, where the first preset threshold value is greater than the second preset threshold value, and preferably, the first preset threshold value and the second preset threshold value provided in this embodiment may be specifically determined according to the actual situation, that is, may be adjusted in real time, and are not a fixed value.
Specifically, in this embodiment, if it is determined that the communication throughput is greater than the first preset threshold, it can be stated that the current communication module is in the efficient mode, and correspondingly, if it is determined that the communication throughput is less than the second preset threshold, it is stated that the current communication module is in the energy-saving mode, and on the basis, if it is determined that the communication throughput is between the first preset threshold and the second preset threshold, it is stated that the current communication module is in the standard mode.
Further, in this embodiment, it should also be noted that the method further includes:
when the communication module is judged to be in the high-efficiency mode, calculating the residual power in the visible light communication system through the real-time power calculation module, and when the calculated residual power meets the condition that the communication module is in the high-efficiency mode, improving the input power of the visible light communication system;
when the residual power is calculated to not meet the condition that the communication module is in the high-efficiency mode, closing a secondary module in the visible light communication system through a main controller, and changing the voltage in the communication module into a high-efficiency working voltage value through the power control circuit so as to enable the power supply power to meet the adjusted working power;
the secondary module represents an access point with other functions in the visible light communication system on the premise of maintaining the normal operation of the communication module.
Further, in this embodiment, it should be noted that, if it is determined in real time that the current communication module is in the high-efficiency mode, the difference between the power supply and the working power in the current visible light communication system is calculated in real time, that is, the remaining power is calculated, and further, whether the current remaining power meets the requirement that the current communication module is continuously in the high-efficiency mode is determined in real time.
Specifically, if the current residual power is detected to meet the requirement that the current communication module is in the high-efficiency mode, the current residual power is further input into the current communication module, so that the current communication module can be continuously in the high-efficiency mode. Correspondingly, if the current residual power is detected not to meet the requirement that the current communication module is in the high-efficiency mode, the secondary module in the current visible light communication system needs to be closed by the main controller in the current visible light communication system, and the voltage in the current communication module is further changed into a required high-efficiency working voltage value by the power control circuit, so that the power supply power in the current visible light communication system can finally meet the regulated working power.
In this embodiment, it should be noted that, the method further includes:
when the communication module is judged to be in the high-efficiency mode and the power supply power is judged to be larger than the working power, the voltage in the communication module is changed to a standard working voltage value again through the power control circuit, and a plurality of corresponding secondary modules are started through the main controller so that the power supply power meets the adjusted working power;
Each communication module comprises a signal transmitting end and a signal receiving end, each signal transmitting end is connected with an LED, and each signal receiving end is connected with a signal receiving port.
Further, in this embodiment, it should be noted that, if the present embodiment determines that the communication system is in the efficient mode, and at the same time, it also determines that the power supply in the current visible light communication system is greater than the required working power, then the voltage in the current communication module needs to be changed to the required standard working voltage value again through the power control circuit, and on this basis, a plurality of corresponding secondary modules are further started through the main controller, so that the current power supply can meet the adjusted working power, so as to correspondingly reduce the energy consumption of the current visible light communication system.
Further, as shown in fig. 3, it should be noted that, in the PSE (for example, a switch or other network devices) provided in this embodiment, a power source and a signal are input through a connector (for example, an RJ45 ethernet interface), so that the visible light communication system can operate in different modes according to different power provided by the PoE power source. Wherein the connector is coupled to the PoE module and to the ethernet physical layer transceiver, and further wherein the ethernet physical layer is coupled to the master controller via a USXGMII (universal serial gigabit media independent interface), the PoE is transmitted to the integrated power management circuit and to the one or more DC-DC converters. The dc power is transmitted to one or more interface functions, which may include the internet of things, an external module, a USB module, or any other interface function.
The communication between the internet of things and the main controller provided by the embodiment is completed through a UART (universal asynchronous receiver transmitter), an external module (for example, a graphics card or a solid state) is communicated with the main controller and is connected with the main controller in PCIe (high-speed serial computer expansion bus), and a USB module is communicated with the main controller through a USB connection. It will be appreciated that the interface functions and connections described in this embodiment are examples only, and that the visible light communication system may include any number or type of functions or features. Meanwhile, the PoE detection circuit detects that the PoE standard sends a signal to the host through SPI (serial peripheral interface)/GPIO (general purpose input/output). Meanwhile, the power control circuit controls the communication module to apply the energy-saving strategy. The voltage of the communication module provided in this embodiment refers to the working voltages of the communication module itself, the power amplifier, the low noise amplifier, the driving circuit, and other components such as the LED normal lighting.
Furthermore, the main controller provided in this embodiment is connected to communication modules, where each communication module includes a receiving end (including an amplifier, a filter, a constant current chip, a steering engine, etc.) and a transmitting end (including a driving circuit, an amplifier, a modulator, an optical lens, a constant current chip, a filter, etc.), where the transmitting end is connected to an LED, and the receiving end is connected to a signal receiving end, which is not illustrated in detail, and may use communication means such as infrared as the signal receiving end. In use, the visible light communication system sends data transmissions to the client device and receives wireless transmissions and rate requirements from the client device via the signal receiving end. When the feedback data rate throughput of the signal receiving end is insufficient, a plurality of LEDs can be called to dynamically allocate communication to meet the rate requirement of a client, or the input power of the LEDs is increased to change the working voltage of the communication module to a standard mode and a high-efficiency mode, or the interface of the secondary module is closed, and electric power is supplied to the communication module to meet the requirement of a client on communication service. In contrast, when the feedback communication throughput of the signal receiving end is excessive, the real-time power calculation module of the main controller calculates the residual power, and makes related instructions to enable the power control circuit to change the working voltage of the communication module to a standard mode or an energy-saving mode, so that the working mode of normal illumination of the LED and matching of a user is met, and the excessive power is supplied to an interface in the secondary module, so that a power control strategy is achieved.
Further, in this embodiment, it should be noted that, the method further includes:
when the communication module is judged to be in the standard mode, calculating the residual power in the visible light communication system through the real-time power calculation module, and when the residual power meets the condition that the visible light communication system is in the standard mode, increasing the input power of the visible light communication system;
when the residual power does not meet the standard mode of the visible light communication system, closing part or all of the secondary modules in the visible light communication system through the main controller, and changing the voltage in the communication module into the standard working voltage value again through the power control circuit so that the power supply power meets the adjusted working power.
Similarly, in this embodiment, it should be noted that, if the embodiment determines that the communication module in the current visible light communication system is in the standard mode in real time, the embodiment also calculates the remaining power in the current visible light communication system, and adjusts the input power in the current visible light communication system according to the remaining power in real time, so as to change the voltage in the communication module to the standard working voltage value again, that is, the power supply power in the current visible light communication system can meet the adjusted working power.
In addition, in this embodiment, as shown in fig. 4, it should be further noted that, in this embodiment, a constant current chip is set in the communication module, the lighting module, and a constant voltage chip is set in the secondary module, further, in this embodiment, a voltage sampling circuit is set in the communication module and the lighting module, a current sampling circuit is set in the secondary module, and the power consumption and the loss of the circuit transmission in other parts of the system are set to a constant value. On the basis, the working current, the working voltage and the fixed values of the power consumption and the circuit transmission loss of the communication module, the lighting module and the secondary module are sequentially input into the implementation power calculation module, so that the current system consumption power and the residual power can be finally calculated through the real-time power calculation module.
In this embodiment, it should be noted that, the method further includes:
when the communication module is judged to be in the standard mode and the power supply power is judged to be larger than the working power, the voltage in the communication module is changed into an energy-saving working voltage value through the power control circuit, and a plurality of corresponding secondary modules are started through the main controller so that the power supply power meets the adjusted working power.
Correspondingly, if the embodiment determines that the communication module in the current visible light communication system is in the standard mode, but when the power supply in the current visible light communication system is greater than the working power, the voltage in the current communication module needs to be changed into the required energy-saving working voltage value through the power control circuit, and meanwhile, a plurality of required secondary modules are started through the main controller so as to correspondingly enable the power supply to meet the adjusted working power.
In addition, in this embodiment, it should be further noted that the method further includes:
when the communication module is judged to be in the energy-saving mode, calculating the residual power in the visible light communication system through the real-time power calculation module, and when the residual power meets the requirement that the visible light communication system is in the energy-saving mode, increasing the input power in the visible light communication system;
when the residual power does not meet the requirement that the visible light communication system is in the energy-saving mode, closing part or all secondary modules in the visible light communication system through the main controller, and changing the voltage in the communication module to the energy-saving working voltage value again through the power control circuit so that the power supply power meets the regulated working power.
Similarly, in this embodiment, it should be noted that, if the embodiment determines that the communication module in the current visible light communication system is in the energy saving mode in real time, the embodiment also calculates the remaining power in the current visible light communication system, and adjusts the input power in the current visible light communication system according to the remaining power in real time, so as to change the voltage in the communication module into the energy saving working voltage value again, that is, the power supply power in the current visible light communication system can meet the adjusted working power.
In addition, in this embodiment, it should also be noted that the method further includes:
when the communication module is judged to be in the energy-saving mode and the power supply power is judged to be larger than the working power, the voltage in the communication module is changed to the energy-saving working voltage value again through the power control circuit, and a plurality of corresponding secondary modules are started through the main controller so that the power supply power meets the adjusted working power.
Further, in this embodiment, it should be noted that, if the present embodiment determines that the current visible light communication system is in the energy saving mode, but determines that the power supply power is greater than the working power, it is necessary to further change the voltage in the current communication module to the energy saving working voltage value through the power control circuit, and at the same time, start a plurality of required secondary modules through the main controller, so as to correspondingly reduce the energy consumption of the current visible light communication system.
When the power source is used, as shown in fig. 2, it is to be noted that when an access signal of the PSE device is detected, a PoE type standard corresponding to the PSE device is detected by a preset PoE detection circuit, and a maximum power supply provided by the PSE device is determined according to the PoE type standard; further, a communication module preset in the system detects the communication throughput of the visible light communication system in the current time period, and determines a working mode corresponding to the system according to the current communication throughput and a preset communication throughput threshold; on the basis, determining the working power corresponding to a communication module in a visible light communication system according to a working mode, and judging whether the power supply power meets the working power or not through a real-time power calculation module; specifically, if the real-time power calculation module judges that the power supply power is not matched with the working power, the input power of the communication module is adjusted through the communication power control module in the preset adjustment module according to a preset control strategy, so that the communication module is continuously in a matched working mode. According to the method, on the premise of ensuring normal illumination of the LED, the user communication service is used as the first priority of the system to correspondingly control the power of the visible light communication system, meanwhile, the method can be used under different PoE standards, is high in intention and universality, and can simultaneously consider overflow and deficiency of throughput of visible light communication, and corresponding control is performed by means of changing input power, disabling idling, disabling interfaces and the like, so that the method can meet the use and switching of various working modes of the user, further greatly reduces the energy consumption of the visible light communication system, and is beneficial to large-scale use of the visible light communication system.
It should be noted that the foregoing implementation procedure is only for illustrating the feasibility of the present application, but this does not represent that the PoE-based power supply visible light communication system power control method of the present application has only one implementation procedure, and instead, the possible implementation of the PoE-based power supply visible light communication system power control method of the present application can be incorporated into the feasible implementation of the present application.
In summary, the power control method of the visible light communication system based on PoE power supply provided by the embodiment of the present invention can correspondingly control the power of the visible light communication system by meeting the user communication service as the first priority of the system on the premise of ensuring the normal illumination of the LED, meanwhile, the present invention can also be used under different PoE standards, has strong intention and universality, can simultaneously consider the overflow and the deficiency of the throughput of the visible light communication, and correspondingly control by changing the input power, disabling the idle interface, and the like, thereby being capable of meeting the use and the switching of the user in various working modes, further greatly reducing the energy consumption of the visible light communication system and being beneficial to the large-scale use of the visible light communication system.
Referring to fig. 5, a power control system of a visible light communication system based on PoE power supply according to a second embodiment of the present invention is applied to a visible light communication system, and the system includes:
the detection module 12 is configured to detect a PoE type standard corresponding to the PSE device through a preset PoE detection circuit when detecting an access signal of the PSE device, and determine a maximum power supply provided by the PSE device according to the PoE type standard, where the detection module 12 includes the PoE module and the PoE detection circuit;
the processing module 22 is configured to detect a communication throughput of the visible light communication system in a current time period by using a preset communication module in the system, and determine a working mode corresponding to the system according to the current communication throughput and a preset communication throughput threshold, where the processing module 22 includes a plurality of communication modules;
the judging module 32 determines the working power corresponding to the communication module in the visible light communication system according to the working mode, and judges whether the power supply meets the working power through the real-time power calculating module, wherein it should be noted that the main controller provided by the embodiment includes the judging module 32 and the real-time power calculating module;
And the adjusting module 42 is configured to adjust, by using a power control circuit, the input power of the communication module according to a preset control policy if the real-time power calculation module determines that the power supply power and the working power are not satisfied, so that the communication module is continuously in a matched working mode, where the adjusting module 42 has functions of lighting module power control and communication module power control.
In the above-mentioned power control system of the visible light communication system based on PoE power supply, the processing module 22 is specifically configured to:
judging whether the communication throughput is between the first preset threshold value and the second preset threshold value;
if the communication throughput is judged to be larger than the first preset threshold value, detecting that the communication throughput is in a supersaturated state, and judging that the communication module is in an efficient mode;
if the communication throughput is judged to be between the first preset threshold value and the second preset threshold value, detecting that the communication throughput is in a saturated state, and judging that the communication module is in a standard mode;
and if the communication throughput is judged to be smaller than the second preset threshold value, detecting that the communication throughput is in an unsaturated state, and judging that the communication module is in an energy-saving mode.
In the above-mentioned power-PoE-based power control system for a visible light communication system, the power control system for a PoE-powered-based power control system for a visible light communication system further includes a first execution module 52, where the first execution module 52 is specifically configured to:
when the communication module is judged to be in the high-efficiency mode, calculating the residual power in the visible light communication system through the real-time power calculation module, and when the calculated residual power meets the condition that the communication module is in the high-efficiency mode, improving the input power of the visible light communication system;
when the residual power is calculated to not meet the condition that the communication module is in the high-efficiency mode, closing a secondary module in the visible light communication system through a main controller, and changing the voltage in the communication module into a high-efficiency working voltage value through the power control circuit so as to enable the power supply power to meet the adjusted working power;
the secondary module represents an access point with other functions in the visible light communication system on the premise of maintaining the normal operation of the communication module.
In the above power control system of the visible light communication system based on PoE power supply, the first execution module 52 is further specifically configured to:
when the communication module is judged to be in the high-efficiency mode and the power supply power is judged to be larger than the working power, the voltage in the communication module is changed to a standard working voltage value again through the power control circuit, and a plurality of corresponding secondary modules are started through the main controller so that the power supply power meets the adjusted working power;
each communication module comprises a signal transmitting end and a signal receiving end, each signal transmitting end is connected with an LED, and each signal receiving end is connected with a signal receiving port.
In the above-mentioned power-PoE-based power control system for a visible light communication system, the power control system for a PoE-based power supply further includes a second execution module 62, where the second execution module 62 is specifically configured to:
when the communication module is judged to be in the standard mode, calculating the residual power in the visible light communication system through the real-time power calculation module, and when the residual power meets the condition that the visible light communication system is in the standard mode, increasing the input power of the visible light communication system;
When the residual power does not meet the standard mode of the visible light communication system, closing part or all of the secondary modules in the visible light communication system through the main controller, and changing the voltage in the communication module into the standard working voltage value again through the power control circuit so that the power supply power meets the adjusted working power.
In the above power control system for a visible light communication system based on PoE power supply, the second execution module 62 is further specifically configured to:
when the communication module is judged to be in the standard mode and the power supply power is judged to be larger than the working power, the voltage in the communication module is changed into an energy-saving working voltage value through the power control circuit, and a plurality of corresponding secondary modules are started through the main controller so that the power supply power meets the adjusted working power.
In the above-mentioned power-PoE-based power control system for a visible light communication system, the power control system for a PoE-powered-based power control system for a visible light communication system further includes a third execution module 72, where the third execution module 72 is specifically configured to:
When the communication module is judged to be in the energy-saving mode, calculating the residual power in the visible light communication system through the real-time power calculation module, and when the residual power meets the requirement that the visible light communication system is in the energy-saving mode, increasing the input power in the visible light communication system;
when the residual power does not meet the requirement that the visible light communication system is in the energy-saving mode, closing part or all secondary modules in the visible light communication system through the main controller, and changing the voltage in the communication module to the energy-saving working voltage value again through the power control circuit so that the power supply power meets the regulated working power.
In the above-mentioned power control system for a visible light communication system based on PoE power supply, the third execution module 72 is further specifically configured to:
when the communication module is judged to be in the energy-saving mode and the power supply power is judged to be larger than the working power, the voltage in the communication module is changed to the energy-saving working voltage value again through the power control circuit, and a plurality of corresponding secondary modules are started through the main controller so that the power supply power meets the adjusted working power.
In particular, in this embodiment, as shown in fig. 3, it should be noted that the access port provided in this embodiment allows certain characteristics to be preserved, which may have to be reduced or eliminated due to power limitations, while the input power of the LED can be dynamically reduced or increased according to the available PoE power budget. In an actual working process, the power control system of the visible light communication system based on PoE power supply provided in this embodiment first confirms PoE standard, further, performs real-time power calculation through the main controller, applies a corresponding control policy, and correspondingly, the adjustment module makes a corresponding adjustment action. By varying the pass (power amplifier) of the communication module to vary the input power of the LED, while allowing the use of higher MCS (modulation and coding scheme), MIMO (multiple input multiple output) to save power without affecting the LED performance (e.g. illumination/linearity), dynamic allocation of visible light communication can be employed to improve the power of the respective communication module due to the fact that the plurality of communication modules work together. When the communication throughput is saturated, the input power of the communication module is correspondingly reduced, namely the gains of the power amplifiers of all the communication modules are reduced, so that the modulation and coding power is reduced.
When the throughput is insufficient, the visible light communication can be dynamically allocated, namely allocation among the communication modules is guaranteed, so that the communication requirements of users in the respective service range can be better met, the gain of the power amplifier of the communication module is improved, or one or more interfaces are forbidden.
In addition, in this embodiment, it should be noted that, in this embodiment, the lighting power control module is also defined, and the lighting power is dynamically changed mainly due to factors such as indoor personnel distribution, humidity, temperature, time, and the like.
In summary, the method and the system for controlling power of the visible light communication system based on PoE power supply provided by the embodiments of the present invention can correspondingly control the power of the visible light communication system by comparing the requirements of the user communication rate on the premise of ensuring normal illumination of the LED, meanwhile, the method and the system can be used under different PoE standards, have strong intention and universality, also consider overflow and deficiency of throughput of visible light communication, and correspondingly control by changing input power, disabling idle and disabling interfaces and other modes, thereby being capable of satisfying use and switching under various working modes of the user, further greatly reducing energy consumption of the visible light communication system, and being beneficial to large-scale use of the visible light communication system.
The above-described respective modules may be functional modules or program modules, and may be implemented by software or hardware. For modules implemented in hardware, the various modules described above may be located in the same processor; or the above modules may be located in different processors in any combination.
Logic and/or steps represented in the flowcharts or otherwise described herein, e.g., a ordered listing of executable instructions for implementing logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device.
More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). In addition, the computer readable medium may even be paper or other suitable medium on which the program is printed, as the program may be electronically captured, via, for instance, optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner, if necessary, and then stored in a computer memory.
It is to be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above-described embodiments, the various steps or methods may be implemented in software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, may be implemented using any one or combination of the following techniques, as is well known in the art: discrete logic circuits having logic gates for implementing logic functions on data signals, application specific integrated circuits having suitable combinational logic gates, programmable Gate Arrays (PGAs), field Programmable Gate Arrays (FPGAs), and the like.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing examples illustrate only a few embodiments of the invention and are described in detail herein without thereby limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims (10)

1. A method for controlling power of a visible light communication system based on PoE power supply, which is applied to the visible light communication system, the method comprising:
When an access signal of PSE equipment is detected, detecting a PoE type standard corresponding to the PSE equipment through a preset PoE detection circuit, and determining the maximum power supply of the PSE equipment according to the PoE type standard;
when a user acquires network service of the visible light communication system, detecting communication throughput in a preset time period through a communication module in the visible light communication system, and comparing the communication throughput with a preset communication throughput threshold value to determine a corresponding working mode of the visible light communication system;
determining the working power corresponding to the communication module in the visible light communication system according to the working mode, and judging whether the power supply power meets the working power or not through a real-time power calculation module;
and if the real-time power calculation module judges that the power supply power and the working power are not satisfied, the power control circuit adjusts the input power of the communication module according to a preset control strategy so as to enable the communication module to be in a matched working mode continuously.
2. The PoE-powered-based visible light communication system power control method of claim 1, said preset communication throughput threshold comprising a first preset threshold and a second preset threshold, and said first preset threshold being greater than said second preset threshold, characterized by: the step of comparing the communication throughput with a preset communication throughput threshold value to determine a working mode corresponding to the visible light communication system comprises the following steps:
Judging whether the communication throughput is between the first preset threshold value and the second preset threshold value;
if the communication throughput is judged to be larger than the first preset threshold value, detecting that the communication throughput is in a supersaturated state, and judging that the communication module is in an efficient mode;
if the communication throughput is judged to be between the first preset threshold value and the second preset threshold value, detecting that the communication throughput is in a saturated state, and judging that the communication module is in a standard mode;
and if the communication throughput is judged to be smaller than the second preset threshold value, detecting that the communication throughput is in an unsaturated state, and judging that the communication module is in an energy-saving mode.
3. The PoE-powered-based power control method of a visible light communication system as recited in claim 2 wherein: the method further comprises the steps of:
when the communication module is judged to be in the high-efficiency mode, calculating the residual power in the visible light communication system through the real-time power calculation module, and when the calculated residual power meets the condition that the communication module is in the high-efficiency mode, improving the input power of the visible light communication system;
When the residual power is calculated to not meet the condition that the communication module is in the high-efficiency mode, closing a secondary module in the visible light communication system through a main controller, and changing the voltage in the communication module into a high-efficiency working voltage value through the power control circuit so as to enable the power supply power to meet the adjusted working power;
the secondary module represents an access point with other functions in the visible light communication system on the premise of maintaining the normal operation of the communication module.
4. A method for controlling power of a PoE-based power supply visible light communication system as recited in claim 3 wherein: the method further comprises the steps of:
when the communication module is judged to be in the high-efficiency mode and the power supply power is judged to be larger than the working power, the voltage in the communication module is changed to a standard working voltage value again through the power control circuit, and a plurality of corresponding secondary modules are started through the main controller so that the power supply power meets the adjusted working power;
Each communication module comprises a signal transmitting end and a signal receiving end, each signal transmitting end is connected with an LED, and each signal receiving end is connected with a signal receiving port.
5. The PoE-powered visible light communication system power control method as recited in claim 4 wherein: the method further comprises the steps of:
when the communication module is judged to be in the standard mode, calculating the residual power in the visible light communication system through the real-time power calculation module, and when the residual power meets the condition that the visible light communication system is in the standard mode, increasing the input power of the visible light communication system;
when the residual power does not meet the standard mode of the visible light communication system, closing part or all of the secondary modules in the visible light communication system through the main controller, and changing the voltage in the communication module into the standard working voltage value again through the power control circuit so that the power supply power meets the adjusted working power.
6. A method for controlling power of a PoE-based power supply visible light communication system as recited in claim 3 wherein: the method further comprises the steps of:
When the communication module is judged to be in the standard mode and the power supply power is judged to be larger than the working power, the voltage in the communication module is changed into an energy-saving working voltage value through the power control circuit, and a plurality of corresponding secondary modules are started through the main controller so that the power supply power meets the adjusted working power.
7. The PoE-powered-based power control method of a visible light communication system of claim 6, wherein: the method further comprises the steps of:
when the communication module is judged to be in the energy-saving mode, calculating the residual power in the visible light communication system through the real-time power calculation module, and when the residual power meets the requirement that the visible light communication system is in the energy-saving mode, increasing the input power in the visible light communication system;
when the residual power does not meet the requirement that the visible light communication system is in the energy-saving mode, closing part or all secondary modules in the visible light communication system through the main controller, and changing the voltage in the communication module to the energy-saving working voltage value again through the power control circuit so that the power supply power meets the regulated working power.
8. The PoE-powered-based visible light communication system power control method of claim 7, wherein: the method further comprises the steps of:
when the communication module is judged to be in the energy-saving mode and the power supply power is judged to be larger than the working power, the voltage in the communication module is changed to the energy-saving working voltage value again through the power control circuit, and a plurality of corresponding secondary modules are started through the main controller so that the power supply power meets the adjusted working power.
9. A PoE-powered based power control system for a visible light communication system, the system comprising:
the detection module is used for detecting a PoE type standard corresponding to PSE equipment through a preset PoE detection circuit when an access signal of the PSE equipment is detected, and determining the maximum power supply of the PSE equipment according to the PoE type standard;
the processing module is used for detecting the communication throughput in a preset time period through the communication module in the visible light communication system when a user acquires the network service of the visible light communication system, and comparing the communication throughput with a preset communication throughput threshold value to determine a working mode corresponding to the visible light communication system;
The first judging module is used for determining the working power corresponding to the communication module in the visible light communication system according to the working mode and judging whether the power supply power meets the working power or not through the real-time power calculating module;
and the adjusting module is used for adjusting the input power of the communication module through the power control circuit according to a preset control strategy if the real-time power calculation module judges that the power supply power and the working power are not met, so that the communication module is continuously in a matched working mode.
10. The PoE-powered visible light communication system power control system of claim 9, said preset communication throughput threshold comprising a first preset threshold and a second preset threshold, and said first preset threshold being greater than said second preset threshold, characterized by: the processing module is specifically configured to:
judging whether the communication throughput is between the first preset threshold value and the second preset threshold value;
if the communication throughput is judged to be larger than the first preset threshold value, detecting that the communication throughput is in a supersaturated state, and judging that the communication module is in an efficient mode;
If the communication throughput is judged to be between the first preset threshold value and the second preset threshold value, detecting that the communication throughput is in a saturated state, and judging that the communication module is in a standard mode;
and if the communication throughput is judged to be smaller than the second preset threshold value, detecting that the communication throughput is in an unsaturated state, and judging that the communication module is in an energy-saving mode.
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