Energy-saving operation control method and system for solar emergency lighting device

Abstract

The invention discloses an energy-saving operation control method and system for a solar emergency lighting device, and relates to the technical field of solar lighting and emergency power supply. Emergency lighting loads are divided into a core load and a non-core load, the core load and the non-core load are connected to independent energy consumption control units respectively, and a hierarchical regulation and control strategy is matched, so that the energy-saving operation of the solar emergency lighting device is realized. When the SOC value of the energy storage unit is lower than a first preset threshold value but higher than a second preset threshold value and no emergency trigger signal exists, the main control unit only conducts the core load energy consumption control unit and cuts off the non-core load energy consumption control unit, so that non-core loads such as an unnecessary common lighting lamp stop working, and the emergency trigger signal does not exist. According to the safety exit indicating lamp, the core load of the safety exit indicating lamp still keeps normal illumination, decoupling control over the power supply states of the two kinds of loads is achieved through the double independent design of the physical layer and the control layer, the situation that the non-core load consumes battery energy at the unnecessary moment is avoided, and maximum energy saving is achieved on the premise that the core safety indicating function is not affected.

Description

Technical Field

[0001] This invention relates to the field of solar lighting and emergency power supply technology, specifically to an energy-saving operation control method and system for a solar emergency lighting device. Background Technology

[0002] Solar-powered emergency lighting systems, as important equipment combining green energy and emergency safety, are widely used in corridors, underground garages, parks, factories, and other places. These systems typically consist of photovoltaic panels, energy storage batteries, controllers, and lighting loads. They automatically switch to battery-powered mode when mains power is interrupted, providing necessary lighting for evacuation and nighttime activities. With the increasing complexity of application scenarios, a single solar-powered emergency lighting system often needs to simultaneously drive multiple different types of lighting loads, such as safety exit indicator lights, escape route guide lights, and general lighting.

[0003] Existing solar emergency lighting control technologies generally adopt a "one-size-fits-all" power supply mode, meaning that all connected lighting loads share a single power supply circuit and are controlled by a single controller. This control method has significant technical drawbacks:

[0004] Firstly, in terms of energy management, the system cannot distinguish between core loads and non-core loads. When the battery is low, all loads working at the same time will quickly deplete the battery energy, causing the core loads to also fail to work properly.

[0005] Secondly, in terms of emergency response, the existing system lacks a graded redundancy protection mechanism. When a sudden emergency such as a fire or earthquake occurs, if the battery is already in a low charge state, the system often fails as a whole because it cannot maintain power supply to all loads, seriously threatening the safety of personnel to escape.

[0006] Third, the control strategies of existing systems are mostly static presets, which cannot adaptively optimize operating parameters based on dynamic factors such as the frequency of historical emergency events, battery discharge characteristics, and day-night changes. This makes it difficult to balance energy saving and emergency reliability, and makes it impossible to achieve intelligent and precise management.

[0007] In summary, how to achieve hierarchical power supply control for solar emergency lighting devices under multi-load scenarios, and minimize ineffective energy consumption while ensuring the emergency reliability of core loads, is a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0008] The purpose of this invention is to overcome the shortcomings of existing technologies and provide an energy-saving operation control method and system for solar emergency lighting devices. This system divides the emergency lighting load into core loads and non-core loads, connecting them to independent energy consumption control units. With a tiered control strategy, when the state of charge (SOC) of the energy storage unit is below a first preset threshold but above a second preset threshold, and there is no emergency trigger signal, the main control unit only activates the energy consumption control unit for the core load and disconnects the energy consumption control unit for the non-core load. This stops non-core loads such as ordinary lights from working, while the core load of the safety exit indicator light continues to illuminate normally. Through the dual independent design of the physical and control layers, decoupled control of the power supply status of the two types of loads is achieved, preventing non-core loads from consuming battery energy unnecessarily and maximizing energy savings without affecting the core safety indication function.

[0009] To solve the above-mentioned technical problems, the present invention provides the following technical solution: On one hand, a method for energy-saving operation control of a solar emergency lighting device, the specific steps of which are as follows:

[0010] S100. Divide the emergency lighting load connected to the solar emergency lighting device into core load and non-core load, and connect the core load to the core load energy consumption control unit and the non-core load to the non-core load energy consumption control unit.

[0011] S200: The main control unit collects the state of charge (SOC) value of the energy storage unit in real time, and the emergency detection unit listens to external emergency trigger signals in real time.

[0012] S300. The main control unit independently controls the conduction and disconnection of the core load energy consumption control unit and the non-core load energy consumption control unit according to the SOC value of the energy storage unit and the presence or absence of the emergency trigger signal, in accordance with a preset hierarchical power supply strategy, so as to realize hierarchical power supply to the core load and the non-core load.

[0013] S400. When the main control unit receives the emergency trigger signal and the state of charge (SOC) value of the energy storage unit is lower than the second preset threshold, the main control unit first turns on the core load energy consumption control unit and cuts off the non-core load energy consumption control unit, and supplies the remaining energy of the energy storage unit to the core load, so that the core load can continue to operate under low power conditions.

[0014] S500. When the State of Charge (SOC) value is lower than the second preset threshold and the emergency detection unit does not receive the emergency trigger signal, the main control unit determines that the system has entered a deep standby mode. At the same time, it sends a cut-off command to the core load energy consumption control unit and the non-core load energy consumption control unit to stop all loads from working. The main control unit itself switches to a low-power monitoring state, retaining only the SOC monitoring function of the energy storage unit and the emergency trigger signal monitoring function of the emergency detection unit to prevent the energy storage unit from over-discharging.

[0015] Furthermore, the core loads include safety exit indicator lights and escape route guide lights, while the non-core loads include general lighting and landscape auxiliary lights;

[0016] Both the core load power consumption control unit and the non-core load power consumption control unit are MOSFET switching circuits with independent enable terminals, and are controlled by the independent I / O ports of the main control unit.

[0017] Furthermore, the routine monitoring process for the hierarchical power supply strategy in the S300 includes:

[0018] When the State of Charge (SOC) value is higher than the first preset threshold and the emergency detection unit does not receive the emergency trigger signal, the main control unit determines that the system has entered the normal power supply mode, and at the same time sends a conduction command to the core load energy consumption control unit and the non-core load energy consumption control unit, so that the core load and the non-core load can be lit normally at the same time.

[0019] When the State of Charge (SOC) value is lower than the first preset threshold but higher than the second preset threshold and the emergency detection unit does not receive the emergency trigger signal, the main control unit determines that the system has entered the energy-saving power supply mode, sends a conduction command to the core load energy consumption control unit, and simultaneously sends a cut-off command to the non-core load energy consumption control unit, keeping only the core load working and cutting off the non-core load to reduce energy consumption.

[0020] Furthermore, the first preset threshold is higher than the second preset threshold. The first and second preset thresholds are stored in the storage module of the main control unit and can be customized through an external debugging interface to adapt to different energy-saving and emergency response needs in different application scenarios.

[0021] Furthermore, the tiered power supply strategy in the S300 also includes an emergency response function:

[0022] When the emergency detection unit receives the emergency trigger signal, the main control unit immediately interrupts the regular monitoring process and enters the emergency response mode;

[0023] In the emergency response mode, the main control unit determines whether the current state of charge (SOC) value of the energy storage unit is higher than the second preset threshold:

[0024] When the State of Charge (SOC) value is greater than the second preset threshold, the main control unit simultaneously sends a conduction command to the core load energy consumption control unit and the non-core load energy consumption control unit to execute full-load emergency lighting.

[0025] If the State of Charge (SOC) value is not greater than the second preset threshold, then S400 is executed, and only the core load energy consumption control unit is turned on.

[0026] Furthermore, the first preset threshold and the second preset threshold are set differently based on the cell characteristics of the energy storage unit:

[0027] When the energy storage unit uses a lead-acid battery, the first preset threshold is set to 60%-70%, and the second preset threshold is set to 20%-30%.

[0028] When the energy storage unit uses a lithium battery, the first preset threshold is set to 50%-60%, and the second preset threshold is set to 10%-20%.

[0029] When the energy storage unit uses a supercapacitor, the first preset threshold is set to 80%-90%, and the second preset threshold is set to 30%-40%.

[0030] Furthermore, the main control unit records the frequency of historical emergency events within a preset period T. The state of charge (SOC) value change curve of the energy storage unit is used to dynamically adjust the first preset threshold and the second preset threshold through a built-in lightweight learning algorithm. The dynamic threshold adjustment of the lightweight learning algorithm is as follows: , ,in, and The adjusted first and second preset thresholds,

[0031] and Based on the first preset threshold and the second preset threshold, The number of emergency events occurring within the preset period T. The maximum number of emergency events is preset. This represents the maximum state of charge (SOC) of the energy storage unit when it is fully charged. This represents the minimum state of charge (SOC) that the energy storage unit is allowed to discharge. The average depth of discharge of the energy storage unit within a preset period T. This represents the maximum allowable depth of discharge for the energy storage unit. The number of unattended nighttime periods within a preset period T. The total number of time periods within a preset period T. The preset weighting coefficients, and This dynamic threshold adjustment analyzes historical emergency frequency, discharge depth, and the proportion of unattended nighttime periods to adaptively optimize threshold settings, enabling the system to reserve more power during peak emergency periods and enter energy-saving mode during unattended periods, thus achieving a dynamic balance between energy saving and emergency preparedness.

[0032] Furthermore, in the deep standby mode, the main control unit executes a low-power monitoring strategy, using intermittent sampling to monitor the state of charge (SOC) value of the energy storage unit and the emergency trigger signal. The wake-up cycle of the intermittent sampling... The state of charge (SOC) of the energy storage unit is dynamically adjusted based on the current SOC value, as follows:

[0033] ,in, The wake-up cycle is dynamically adjusted. Based on the wake-up cycle,

[0034] This is the real-time value of the state of charge of the current energy storage unit. This represents the maximum state of charge of the energy storage unit when it is fully charged. This is the minimum state of charge that the energy storage unit is allowed to discharge.

[0035] The frequency of emergency events detected by the emergency detection unit within a preset time period. This is the SOC impact coefficient, used to control the degree of influence of SOC on the wake-up cycle. The emergency frequency impact coefficient is used to control the degree of influence of the emergency event frequency on the wake-up cycle. When the state of charge (SOC) value of the energy storage unit is high, the wake-up cycle is extended to further reduce standby power consumption. When the frequency of recent emergency events is high, the wake-up cycle is shortened to improve the emergency response speed, thereby achieving the optimal balance between standby power consumption and emergency response sensitivity.

[0036] On the other hand, an energy-saving operation control system for a solar-powered emergency lighting device includes:

[0037] Photovoltaic power generation units are used to convert solar energy into electrical energy to provide energy input for the system.

[0038] An energy storage unit is used to store the electrical energy converted by the photovoltaic power generation unit and to provide operating power for the entire system;

[0039] A core load energy consumption control unit is electrically connected to at least one core emergency lighting load and is used to independently control the power supply status of the core emergency lighting load.

[0040] A non-core load energy consumption control unit is electrically connected to at least one non-core emergency lighting load and is used to independently control the power supply status of the non-core emergency lighting load.

[0041] The emergency detection unit is used to detect external emergency trigger signals in real time and send the detected emergency trigger signals to the main control unit;

[0042] The main control unit includes:

[0043] The SOC monitoring module is used to collect and calculate the SOC value of the energy storage unit in real time.

[0044] The signal receiving module is used to receive the emergency trigger signal sent by the emergency detection unit;

[0045] The storage module is used to store the first preset threshold, the second preset threshold, and historical monitoring data;

[0046] The logic judgment module is used to perform graded power supply logic judgment by calling the threshold data in the storage module based on the SOC value collected by the SOC monitoring module and the emergency trigger signal received by the signal receiving module;

[0047] The instruction output module is used to send independent turn-on and turn-off instructions to the core load energy consumption control unit and the non-core load energy consumption control unit respectively, based on the judgment result of the logic judgment module.

[0048] Compared with existing technologies, this energy-saving operation control method for solar emergency lighting devices has the following advantages:

[0049] I. This invention divides emergency lighting loads into core loads and non-core loads, and connects them to independent energy consumption control units. With a hierarchical control strategy, when the state of charge (SOC) value of the energy storage unit is lower than a first preset threshold but higher than a second preset threshold and there is no emergency trigger signal, the main control unit only turns on the energy consumption control unit of the core load and turns off the energy consumption control unit of the non-core load. This causes non-core loads such as ordinary lights that are not necessary to stop working, while the core load of the safety exit indicator light continues to illuminate normally. Through the dual independent design of the physical layer and the control layer, the power supply status of the two types of loads is decoupled, avoiding the consumption of battery energy by non-core loads at unnecessary times, and maximizing energy saving without affecting the core safety indication function.

[0050] Second, this invention addresses the safety hazard of overall failure in low-power emergency situations through a redundancy protection mechanism and emergency response function. When the emergency detection unit receives an emergency trigger signal, the main control unit immediately enters the emergency response mode. At this time, if the SOC value of the energy storage unit is higher than the second preset threshold, all loads are simultaneously turned on to achieve full-load emergency lighting. If the SOC value is lower than or equal to the second preset threshold, the redundancy protection strategy is executed, prioritizing the turn on the core load energy consumption control unit and cutting off non-core loads. All remaining energy is concentrated to supply the core loads such as safety exit indicator lights and escape route guide lights, ensuring that the core lighting function is not interrupted, providing a valuable time window for personnel to escape, and significantly improving the robustness and safety of the emergency lighting system.

[0051] Other advantages, objectives and features of the invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be learned from the practice of the invention. Attached Figure Description

[0052] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0053] Figure 1 A flowchart illustrating the steps of an energy-saving operation control method for a solar emergency lighting device;

[0054] Figure 2 This is a flowchart illustrating the execution of the normal power supply mode in an embodiment of the present invention.

[0055] Figure 3 This is a flowchart illustrating the execution of the energy-saving power supply mode in an embodiment of the present invention.

[0056] Figure 4 This is a block diagram of the energy-saving operation control system for a solar-powered emergency lighting device. Detailed Implementation

[0057] To better understand the above technical solutions, a detailed description of the solutions will be provided below in conjunction with the accompanying drawings and specific embodiments. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0058] To address the shortcomings of existing solar-powered emergency lighting devices, such as inefficient energy management, poor emergency response reliability, and static control strategies under multi-load scenarios, this invention provides an energy-saving operation control method and system for solar-powered emergency lighting devices. This method categorizes lighting loads into core and non-core types and decouples their physical and control layers. Combined with a tiered power supply strategy based on the state of charge (SOC) of the energy storage unit and external emergency trigger signals, it maximizes energy savings while ensuring core emergency lighting functions. Furthermore, this invention introduces an adaptive dynamic threshold adjustment mechanism based on historical data and a low-power monitoring mode, further enhancing the system's intelligence and endurance. This invention is applicable to various solar-powered emergency lighting systems, particularly suitable for locations requiring long-term standby time and high emergency response capabilities, such as corridors, underground garages, factories, and parks.

[0059] Specifically, in combination Figure 1 As shown, the energy-saving operation control method for solar emergency lighting devices of the present invention achieves an optimal balance between energy saving and emergency protection through refined hierarchical control and dynamic strategy adjustment. The specific steps of the method are as follows:

[0060] S100. Divide the emergency lighting load connected to the solar emergency lighting device into core load and non-core load, and connect the core load to the core load energy consumption control unit and the non-core load to the non-core load energy consumption control unit.

[0061] S200: The main control unit collects the state of charge (SOC) value of the energy storage unit in real time, and the emergency detection unit listens to external emergency trigger signals in real time.

[0062] S300: The main control unit independently controls the conduction and disconnection of the core load energy consumption control unit and the non-core load energy consumption control unit according to the SOC value of the energy storage unit and the presence or absence of the emergency trigger signal, in accordance with the preset hierarchical power supply strategy, so as to realize hierarchical power supply for the core load and the non-core load.

[0063] S400 When the main control unit receives an emergency trigger signal and the state of charge (SOC) value of the energy storage unit is lower than the second preset threshold, the main control unit prioritizes turning on the core load energy consumption control unit and turns off the non-core load energy consumption control unit, supplying the remaining energy of the energy storage unit to the core load, so that the core load can continue to operate under low power conditions.

[0064] S500 When the State of Charge (SOC) value is lower than the second preset threshold and the emergency detection unit does not receive an emergency trigger signal, the main control unit determines that the system has entered a deep standby mode. At the same time, it sends a cut-off command to the core load energy consumption control unit and the non-core load energy consumption control unit to stop all loads from working. The main control unit itself switches to a low-power monitoring state, retaining only the SOC monitoring function of the energy storage unit and the emergency trigger signal monitoring function of the emergency detection unit to prevent the energy storage unit from over-discharging.

[0065] In the specific implementation process, firstly, based on the importance of the lighting load in emergency scenarios, all emergency lighting loads connected to the solar emergency lighting device are divided into core loads and non-core loads. Core loads are lighting equipment that plays a key role in the safe evacuation and guidance of personnel in emergency situations. In this embodiment, examples include: safety exit indicator lights and escape route guide lights. The lights of the core loads are given priority in power supply under any circumstances. Non-core loads are equipment that provides regular lighting or auxiliary lighting. In this embodiment, examples include: general lighting lamps for illumination and landscape auxiliary lights for beautifying the environment. These are temporarily cut off to save energy during energy shortages.

[0066] To achieve independent control of the two types of loads, this invention implements a decoupling design in hardware. The core loads are connected to an independent core load power consumption control unit, and all non-core loads are connected to another independent non-core load power consumption control unit. These two control units have MOSFET switching circuits with independent enable terminals and are independently controlled by different I / O ports of the main control unit.

[0067] After the system starts up, the main control unit uses its internal SOC monitoring module to collect and calculate the remaining charge of the energy storage unit (such as a lead-acid battery, lithium battery, or supercapacitor in this embodiment) in real time. Meanwhile, the emergency detection unit is always operational, used to monitor external emergency trigger signals in real time.

[0068] The main control unit has a built-in logic judgment module and a storage module. The storage module has preset first and second preset thresholds. The logic judgment module, based on the real-time collected SOC value and whether an emergency trigger signal is received, independently sends conduction or cut-off commands to the core load energy consumption control unit and non-core load energy consumption control unit according to the preset hierarchical power supply strategy, thereby realizing independent power supply control of core load and non-core load. This hierarchical strategy includes conventional monitoring procedures and emergency response procedures.

[0069] Under normal monitoring procedures, i.e., when no emergency trigger signal is received, the system operates in the following two modes based on the SOC value:

[0070] like Figure 2 As shown, in normal power supply mode: when the SOC value is higher than the first preset threshold, it indicates that the energy storage unit has sufficient power. The main control unit determines that the system has entered normal power supply mode and sends a conduction command to the core load energy consumption control unit and the non-core load energy consumption control unit, so that all core loads and non-core loads can provide normal lighting and meet daily lighting needs.

[0071] like Figure 3 As shown, in energy-saving power supply mode: when the SOC value decreases, falling below the first preset threshold but still above the second preset threshold, it indicates that the power consumption is at a moderate level. To extend the lighting time, the main control unit determines that the system enters energy-saving power supply mode. At this time, the main control unit only sends a conduction command to the core load energy consumption control unit to keep core loads such as safety exit indicator lights working; simultaneously, it sends a cut-off command to the non-core load energy consumption control unit to stop non-core loads such as ordinary lighting from working. This mode ensures the long-term operation of core indicator functions by cutting off unnecessary lighting.

[0072] When the system receives an emergency trigger signal and the SOC value of the energy storage unit is lower than the second preset threshold, the system enters a special emergency response state. At this time, the power is severely insufficient to support full-load operation. To ensure the safety guidance function, the main control unit executes a redundancy protection strategy: it prioritizes the activation of the core load energy consumption control unit, concentrating all remaining energy to supply the safety exit indicator lights and escape route guide lights; at the same time, it cuts off the non-core load energy consumption control unit to avoid any waste of power, ensuring that the core escape indicator lighting can continue to operate even in extreme emergencies and when the power is exhausted, providing a time window for personnel evacuation.

[0073] When the State of Charge (SOC) value continues to decrease and eventually falls below the second preset threshold, and the emergency detection unit does not receive any emergency trigger signal during this period, the system determines that it has entered a deep standby state with no emergency demand. To prevent permanent damage to the energy storage unit due to over-discharge, the main control unit executes protective measures: simultaneously sending cut-off commands to the core load energy consumption control unit and non-core load energy consumption control units, causing all loads to stop working, and the main control unit itself switches to a low-power monitoring state. In this state, the main control unit shuts down unnecessary computing and communication modules, retaining only the monitoring function of the energy storage unit's SOC and the emergency trigger signal listening function of the emergency detection unit, maintaining the basic operation of the system and ensuring the safety of the energy storage unit.

[0074] To more clearly illustrate the above-mentioned graded power supply strategy, the following detailed explanation is based on a typical application scenario, in which the first preset threshold of the system is set to 60%, and the second preset threshold is set to 20%.

[0075] Scenario 1: Energy storage unit SOC=95% (>60%), no emergency signal, system is in normal power supply mode, all lights are on normally, providing full illumination.

[0076] Scenario 2: Energy storage unit SOC=45% (between 60% and 20%), no emergency signal, the system enters energy-saving power supply mode, the safety exit indicator and escape route guide lights remain on, while ordinary landscape lights automatically turn off to save energy.

[0077] Scenario 3: The energy storage unit's SOC is 45%, but the emergency detection unit receives an emergency signal. The system immediately interrupts the normal process and enters the emergency response mode. Since the SOC is higher than 20%, the main control unit determines that there is sufficient power and simultaneously turns on all loads to achieve full-load emergency lighting with maximum brightness to guide evacuation.

[0078] Scenario 4: When the energy storage unit's SOC is 15% (<20%) and there is no emergency signal, the system enters deep standby mode, cuts off all loads, and the main control unit enters low-power monitoring mode.

[0079] Scenario 5: When the energy storage unit's SOC is 15% (<20%), an emergency signal is triggered. The system executes the S400 redundancy protection strategy, cuts off all non-core loads, and supplies all remaining power to the safety exit indicator lights to ensure uninterrupted evacuation direction indication until the power is completely depleted.

[0080] In a further embodiment of the present invention, the first preset threshold and the second preset threshold are not fixed, but are set differently according to the cell characteristics of the energy storage unit to match the optimal operating range of different chemical batteries, thereby extending battery life and optimizing performance. The specific settings are as follows:

[0081] When the energy storage unit uses lead-acid batteries, in order to avoid deep discharge damage to the battery and to take into account the range, the first preset threshold is set to 60%-70%, and the second preset threshold is set to 20%-30%.

[0082] When the energy storage unit uses lithium batteries, due to their good discharge resistance, the first preset threshold is set to 50%-60%, and the second preset threshold is set to 10%-20%.

[0083] When the energy storage unit uses supercapacitors, because of their low energy density but high power density and long cycle life, in order to ensure the reliability of emergency response, a higher proportion of power is reserved, and the first preset threshold is set to 80%-90%, and the second preset threshold is set to 30%-40%.

[0084] The aforementioned basic thresholds are preset through the storage module of the main control unit and can be customized according to specific application scenarios through an external debugging interface.

[0085] To achieve a higher level of intelligent management, this invention also provides a dynamic threshold adjustment mechanism, in which the main control unit records the frequency of historical emergency events within a preset period T. The SOC value change curve of the energy storage unit is dynamically adjusted using a built-in lightweight learning algorithm to determine the first preset threshold. Second preset threshold ,

[0086] To adapt to the current usage environment, the lightweight learning algorithm dynamically adjusts the threshold: , ,in, and The adjusted first and second preset thresholds,

[0087] and Based on the first preset threshold and the second preset threshold, The number of emergency events occurring within the preset period T. The maximum number of emergency events is preset. This represents the maximum state of charge (SOC) of the energy storage unit when it is fully charged. This represents the minimum state of charge (SOC) that the energy storage unit is allowed to discharge. The average depth of discharge of the energy storage unit within a preset period T. This represents the maximum allowable depth of discharge for the energy storage unit. The number of unattended nighttime periods within a preset period T. The total number of time periods within a preset period T. The preset weighting coefficients, and This dynamic threshold adjustment adaptively optimizes threshold settings by analyzing historical emergency frequency, discharge depth, and the proportion of unattended nighttime periods. This allows the system to reserve more power during peak emergency periods and enter energy-saving mode during off-peak hours, achieving a dynamic balance between energy conservation and emergency preparedness. Specifically, when the frequency of emergency events... At higher levels, The term increases, making and All of these are increased accordingly, thus reserving more power to cope with future emergencies, when the average depth of discharge... When the value is large, it indicates that the battery is frequently deep-discharged, which damages its lifespan. This can be addressed by subtracting... To appropriately reduce the item This allows the system to enter energy-saving mode earlier, while the proportion of unattended periods at night... The increase of will By reducing power consumption and allowing the system to enter a deep standby mode at night to conserve more energy, the system can find a dynamic balance between high-risk emergency periods and energy-saving needs through this adaptive optimization.

[0088] Furthermore, in deep standby mode, to further reduce power consumption, the main control unit implements an intelligent low-power monitoring strategy, employing intermittent sampling to monitor the SOC value and emergency trigger signal, with the sampling or wake-up cycle... The SOC value will be dynamically adjusted based on the current SOC value and the frequency of recent emergency events, as follows: ,in,

[0089] The wake-up cycle is dynamically adjusted. Based on the wake-up cycle, This is the real-time value of the state of charge of the current energy storage unit. This represents the maximum state of charge of the energy storage unit when it is fully charged. This is the minimum state of charge that the energy storage unit is allowed to discharge. The frequency of emergency events detected by the emergency detection unit within a preset time period. This is the SOC impact coefficient, used to control the degree of influence of SOC on the wake-up cycle. This is an emergency frequency impact coefficient used to control the degree to which the frequency of emergency events affects the wake-up cycle. When the state of charge (SOC) value of the energy storage unit is high, the wake-up cycle is extended to further reduce standby power consumption. When the frequency of recent emergency events is high, the wake-up cycle is shortened to improve emergency response speed, thereby achieving an optimal balance between standby power consumption and emergency response sensitivity. The principle of this strategy is: when the remaining power... At higher levels, The item is relatively large, and the wake-up cycle is long. Correspondingly, the standby time of the main control unit is extended, thereby minimizing standby power consumption. Conversely, when the battery is low, the wake-up cycle is shortened to monitor the battery level more frequently and prevent accidental over-discharge. And when the frequency of recent emergency events... At higher levels, The value will decrease, thus shortening the wake-up cycle and enabling the system to respond to potential emergencies with greater sensitivity. This mechanism achieves an optimal balance between standby power consumption and emergency response sensitivity.

[0090] On the other hand, the present invention also provides an energy-saving operation control system for a solar emergency lighting device, which is used to implement the above-mentioned control method, such as... Figure 4 As shown, the system includes:

[0091] Photovoltaic power generation unit: Composed of solar panels, responsible for converting solar energy into electrical energy, providing green energy input for the entire system.

[0092] Energy storage unit: Used to store the electrical energy converted by the photovoltaic power generation unit and provide a stable power supply for all loads and the main control unit.

[0093] Core load energy consumption control unit: electrically connected to at least one core emergency lighting load, independently controlled by the main control unit, responsible for the power supply on / off of the core load.

[0094] Non-core load energy consumption control unit: electrically connected to at least one non-core emergency lighting load, and also independently controlled by the main control unit, responsible for the power supply on and off of the non-core load.

[0095] Emergency detection unit: used to detect external emergency trigger signals in real time and convert the signals into digital commands to be sent to the main control unit.

[0096] Main control unit: It integrates multiple functional modules:

[0097] SOC monitoring module: Collects and calculates the SOC value of the energy storage unit in real time.

[0098] Signal receiving module: Receives and analyzes signals sent by the emergency detection unit.

[0099] Storage module: Non-volatile memory used to store parameters such as the first and second preset thresholds, historical monitoring data, weighting coefficients, and basic wake-up cycle.

[0100] Logic judgment module: Based on the SOC value and emergency signal, it calls the threshold data in the storage module to perform graded power supply logic judgment, and can dynamically adjust the threshold through the built-in lightweight learning algorithm.

[0101] Command output module: Based on the final decision of the logic judgment module, send independent turn-on or turn-off commands to the core load and non-core load power consumption control units respectively.

[0102] In summary, this invention constructs a complete energy-saving operation scheme for solar emergency lighting through load grading, independent control, tiered power supply, dynamic threshold adjustment, and intelligent low-power monitoring. This method not only maximizes the utilization of solar energy in daily operation and significantly extends the lighting duration, but also establishes a redundant guarantee mechanism in extreme low-power emergency situations, ensuring the absolute reliability of core safety indication functions and fundamentally improving the intelligence level and safety grade of the emergency lighting system.

[0103] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A method for energy-saving operation control of a solar-powered emergency lighting device, characterized in that, The specific steps of this method are as follows: S100. Divide the emergency lighting load connected to the solar emergency lighting device into core load and non-core load, and connect the core load to the core load energy consumption control unit and the non-core load to the non-core load energy consumption control unit. S200: The main control unit collects the state of charge (SOC) value of the energy storage unit in real time, and the emergency detection unit listens to external emergency trigger signals in real time. S300. The main control unit independently controls the conduction and disconnection of the core load energy consumption control unit and the non-core load energy consumption control unit according to the SOC value of the energy storage unit and the presence or absence of the emergency trigger signal, in accordance with a preset hierarchical power supply strategy, so as to realize hierarchical power supply to the core load and the non-core load. S400. When the main control unit receives the emergency trigger signal and the state of charge (SOC) value of the energy storage unit is lower than the second preset threshold, the main control unit first turns on the core load energy consumption control unit and cuts off the non-core load energy consumption control unit, and supplies the remaining energy of the energy storage unit to the core load, so that the core load can continue to operate under low power conditions. S500. When the State of Charge (SOC) value is lower than the second preset threshold and the emergency detection unit does not receive the emergency trigger signal, the main control unit determines that the system has entered a deep standby mode. At the same time, it sends a cut-off command to the core load energy consumption control unit and the non-core load energy consumption control unit to stop all loads from working. The main control unit itself switches to a low-power monitoring state, retaining only the SOC monitoring function of the energy storage unit and the emergency trigger signal monitoring function of the emergency detection unit to prevent the energy storage unit from over-discharging.

2. The energy-saving operation control method for a solar emergency lighting device according to claim 1, characterized in that, The core loads include safety exit indicator lights and escape route guide lights, while the non-core loads include general lighting and landscape auxiliary lights. Both the core load power consumption control unit and the non-core load power consumption control unit are MOSFET switching circuits with independent enable terminals, and are controlled by the independent I / O ports of the main control unit.

3. The energy-saving operation control method for a solar emergency lighting device according to claim 1, characterized in that, The routine monitoring process for the graded power supply strategy in the S300 includes: When the State of Charge (SOC) value is higher than the first preset threshold and the emergency detection unit does not receive the emergency trigger signal, the main control unit determines that the system has entered the normal power supply mode, and at the same time sends a conduction command to the core load energy consumption control unit and the non-core load energy consumption control unit, so that the core load and the non-core load can be lit normally at the same time. When the State of Charge (SOC) value is lower than the first preset threshold but higher than the second preset threshold and the emergency detection unit does not receive the emergency trigger signal, the main control unit determines that the system has entered the energy-saving power supply mode, sends a conduction command to the core load energy consumption control unit, and simultaneously sends a cut-off command to the non-core load energy consumption control unit, keeping only the core load working and cutting off the non-core load to reduce energy consumption.

4. The energy-saving operation control method for a solar emergency lighting device according to claim 3, characterized in that, The first preset threshold is higher than the second preset threshold. The first and second preset thresholds are stored in the storage module of the main control unit and can be customized through an external debugging interface to adapt to different energy-saving and emergency response needs in different application scenarios.

5. The energy-saving operation control method for a solar emergency lighting device according to claim 1, characterized in that, The tiered power supply strategy in the S300 also includes an emergency response function: When the emergency detection unit receives the emergency trigger signal, the main control unit immediately interrupts the regular monitoring process and enters the emergency response mode; In the emergency response mode, the main control unit determines whether the current state of charge (SOC) value of the energy storage unit is higher than the second preset threshold: When the State of Charge (SOC) value is greater than the second preset threshold, the main control unit simultaneously sends a conduction command to the core load energy consumption control unit and the non-core load energy consumption control unit to execute full-load emergency lighting. If the State of Charge (SOC) value is not greater than the second preset threshold, then S400 is executed, and only the core load energy consumption control unit is turned on.

6. The energy-saving operation control method for a solar emergency lighting device according to claim 4, characterized in that, The first preset threshold and the second preset threshold are set differently based on the cell characteristics of the energy storage unit: When the energy storage unit uses a lead-acid battery, the first preset threshold is set to 60%-70%, and the second preset threshold is set to 20%-30%. When the energy storage unit uses a lithium battery, the first preset threshold is set to 50%-60%, and the second preset threshold is set to 10%-20%. When the energy storage unit uses a supercapacitor, the first preset threshold is set to 80%-90%, and the second preset threshold is set to 30%-40%.

7. The energy-saving operation control method for a solar emergency lighting device according to claim 4, characterized in that, The main control unit records the frequency of historical emergency events within a preset period T. The state of charge (SOC) value change curve of the energy storage unit is used to dynamically adjust the first preset threshold and the second preset threshold through a built-in lightweight learning algorithm. The dynamic threshold adjustment of the lightweight learning algorithm is as follows: , ,in, and The adjusted first and second preset thresholds, and Based on the first preset threshold and the second preset threshold, The number of emergency events occurring within the preset period T. The maximum number of emergency events is preset. This represents the maximum state of charge (SOC) of the energy storage unit when it is fully charged. This represents the minimum state of charge that the energy storage unit is allowed to discharge. The average depth of discharge of the energy storage unit within a preset period T. This represents the maximum allowable depth of discharge for the energy storage unit. The number of unattended nighttime periods within a preset period T. The total number of time periods within a preset period T. The preset weighting coefficients, and .

8. The energy-saving operation control method for a solar emergency lighting device according to claim 1, characterized in that, In the deep standby mode, the main control unit executes a low-power monitoring strategy, using intermittent sampling to monitor the state of charge (SOC) value of the energy storage unit and the emergency trigger signal. The wake-up cycle of the intermittent sampling... The state of charge (SOC) of the energy storage unit is dynamically adjusted based on the current SOC value, as follows: ,in, The wake-up cycle is dynamically adjusted. Based on the wake-up cycle, This is the real-time value of the state of charge of the current energy storage unit. This represents the maximum state of charge of the energy storage unit when it is fully charged. This is the minimum state of charge that the energy storage unit is allowed to discharge. The frequency of emergency events detected by the emergency detection unit within a preset time period. This is the SOC impact coefficient, used to control the degree of influence of SOC on the wake-up cycle. This is the emergency frequency impact coefficient, used to control the degree of influence of emergency event frequency on the wake-up cycle.

9. An energy-saving operation control system for a solar emergency lighting device, applicable to the energy-saving operation control method for a solar emergency lighting device as described in any one of claims 1-8, characterized in that, The system includes: Photovoltaic power generation units are used to convert solar energy into electrical energy to provide energy input for the system. An energy storage unit is used to store the electrical energy converted by the photovoltaic power generation unit and to provide operating power for the entire system; A core load energy consumption control unit is electrically connected to at least one core emergency lighting load and is used to independently control the power supply status of the core emergency lighting load. A non-core load energy consumption control unit is electrically connected to at least one non-core emergency lighting load and is used to independently control the power supply status of the non-core emergency lighting load. The emergency detection unit is used to detect external emergency trigger signals in real time and send the detected emergency trigger signals to the main control unit; The main control unit includes: The SOC monitoring module is used to collect and calculate the SOC value of the energy storage unit in real time. The signal receiving module is used to receive the emergency trigger signal sent by the emergency detection unit; The storage module is used to store the first preset threshold, the second preset threshold, and historical monitoring data; The logic judgment module is used to perform graded power supply logic judgment by calling the threshold data in the storage module based on the SOC value collected by the SOC monitoring module and the emergency trigger signal received by the signal receiving module; The instruction output module is used to send independent turn-on and turn-off instructions to the core load energy consumption control unit and the non-core load energy consumption control unit respectively, based on the judgment result of the logic judgment module.

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