Earthquake early warning terminal power supply method and system based on photovoltaic power supply

Abstract

The invention relates to the technical field of earthquake early warning, in particular to an earthquake early warning terminal power supply method and system based on photovoltaic power supply. The method comprises the following steps: acquiring the output power P1 of a photovoltaic module and the opening area A of a current photovoltaic panel; calculating a product coefficient E of the solar radiation amount Pin and the conversion efficiency eta of the photovoltaic panel according to the output power P1 and the opening area A, thereby calculating an opening area A'required by the photovoltaic panel to stably supply power to the early warning terminal; and comparing the opening area A'of the photovoltaic panel with the opening area A of the current photovoltaic panel to adjust the opening scheme of the photovoltaic panel so as to adjust the power supply strategy of the early warning terminal. According to the method, the starting scheme of the photovoltaic panel is dynamically adjusted, so that the electric energy required by the early warning terminal is stably supplied, and the stability of supplying power to the early warning terminal is improved.

Description

Technical Field

[0001] The present application relates to the technical field of earthquake early warning, and in particular to a photovoltaic-powered earthquake early warning terminal power supply method and system. Background Art

[0002] Earthquake early warning technology is a crucial component of modern disaster prevention and mitigation. By leveraging the slower propagation speed of seismic waves than electromagnetic waves, it provides early warnings to areas where the waves have yet to reach, effectively improving the safety of residents in the affected area. This technology has wide application, extending beyond urban areas to include remote mountainous areas and other areas prone to geological disasters. With technological advancements, the accuracy and reliability of earthquake early warning systems have continuously improved, making them an effective means of protecting people's lives and property. To ensure the stable operation of earthquake early warning systems, existing solutions primarily focus on optimizing power supply systems. It's common practice to deploy early warning monitoring base stations, in addition to relying on traditional mains power, to employ a variety of backup power supply options. For example, in areas with abundant solar resources, photovoltaic power systems are commonly used to supplement mains power shortages, further improving the reliability and stability of the power supply.

[0003] However, while these measures have, to a certain extent, addressed power supply issues in some areas, they still have significant limitations. In particular, under conditions of unpredictable weather or unstable solar radiation, the conversion efficiency of photovoltaic panels can be significantly affected, leading to significant fluctuations in the output power of the photovoltaic system, which in turn affects the stable operation of the entire early warning system. In such situations, dynamically adjusting the operating state of photovoltaic panels to adapt to varying weather conditions has become a critical issue that needs to be addressed. Summary of the Invention

[0004] The first purpose of this application is to provide a power supply method for an earthquake early warning terminal based on photovoltaic power supply, so that in the case of changeable weather or unstable solar radiation, photovoltaic panels can still stably power the earthquake early warning terminal, thereby improving the reliability and stability of the system.

[0005] The above-mentioned object of the present invention is achieved through the following technical solutions:

[0006] A photovoltaic-based power supply method for an earthquake early warning terminal comprises:

[0007] Obtaining the output power P1 of the photovoltaic module per unit time and the open area A of the current photovoltaic panel in the photovoltaic module in a specific time period, wherein the photovoltaic panel includes a main photovoltaic panel and a secondary photovoltaic panel connected in series;

[0008] Calculate the product coefficient E of the solar radiation Pin in the current weather and the conversion efficiency η of the current photovoltaic panel based on the output power P1 and the open area A of the photovoltaic panel, and calculate the open area A′ required for the photovoltaic panel to stably supply the warning terminal based on the product coefficient E;

[0009] Compare the area A′ required to be opened of the photovoltaic panel with the opening area A of the current photovoltaic panel to adjust the opening plan of the photovoltaic panel, thereby adjusting the power supply strategy of the early warning terminal. The photovoltaic panel opening plan includes turning on the main photovoltaic panel and the auxiliary photovoltaic panel, and turning on the main photovoltaic panel and turning off the auxiliary photovoltaic panel.

[0010] Preferably, the product coefficient E is determined by the following formula:

[0011] P = Pin × A × η;

[0012] Where P is the output power of the photovoltaic panel, Pin is the solar radiation, A is the area of ​​the photovoltaic panel, and η is the conversion efficiency of the photovoltaic panel;

[0013] From the above formula, we can see that

[0014] E=P1 / A,

[0015] Where E is the product coefficient of the current solar radiation Pin and the current photovoltaic panel conversion efficiency η, P1 is the output power of the photovoltaic panel per unit time, and A is the current open area of ​​the photovoltaic panel. The product coefficient E can be calculated from this:

[0016] Preferably, in the case of the multiplication coefficient E, calculating the area A′ required for the photovoltaic panel to stably supply the warning terminal includes:

[0017] Obtaining the power consumption P2 of the warning terminal per unit time;

[0018] The area A' required for the photovoltaic panel to stably supply the warning terminal is calculated based on the product coefficient E and the power consumption P2. The calculation method is as follows:

[0019] A′=P2 / E;

[0020] Among them, E is the product coefficient of the current weather solar radiation Pin and the current photovoltaic panel conversion efficiency η, P2 is the power consumption of the early warning terminal per unit time, that is, the power required for the early warning terminal to work, and A′ is the area required for the photovoltaic panel to stably supply the early warning terminal. From this, the required open area A′ can be calculated.

[0021] Preferably, the comparing the area A′ required to be opened of the photovoltaic panel with the current opening area A of the photovoltaic panel to adjust the opening scheme of the photovoltaic panel, thereby adjusting the power supply strategy of the early warning terminal includes:

[0022] When A′≥A, the power-on status of the main photovoltaic panel and the auxiliary photovoltaic panel is detected,

[0023] If the main photovoltaic panel and the auxiliary photovoltaic panel are turned on, the battery of the photovoltaic assembly is started to supply power to the early warning terminal;

[0024] If the main photovoltaic panel is turned on and the auxiliary photovoltaic panel is turned off, calculate the photovoltaic panel open area A1′ after the auxiliary photovoltaic panel is turned on. If A′>A1′, start the battery of the photovoltaic assembly to power the early warning terminal; if A′≤A1′, the photovoltaic panel continues to power the early warning terminal.

[0025] Preferably, if A′≤A1′:

[0026] Obtaining a remaining power level of the battery of the photovoltaic module, and if the remaining power level is lower than a preset value, obtaining a charging power P3 of the battery;

[0027] The output power P1′ of the photovoltaic panel under the current product coefficient E is calculated based on the photovoltaic panel opening area A1′. If the output power P1′ ≥ the consumed power P2 + the charging power P3, the battery charging is started; if the output power P1′ < the consumed power P2 + the charging power P3, the battery charging is not started.

[0028] Preferably, the comparing the area A′ required to be opened of the photovoltaic panel with the current opening area A of the photovoltaic panel to adjust the opening scheme of the photovoltaic panel, thereby adjusting the power supply strategy of the early warning terminal further includes:

[0029] When A′<A, the power-on status of the main photovoltaic panel and the auxiliary photovoltaic panel is detected,

[0030] If the main photovoltaic panel and the auxiliary photovoltaic panel are turned on, or the main photovoltaic panel is turned on and the auxiliary photovoltaic panel is turned off, the photovoltaic panels are kept on continuously supplying power to the early warning terminal.

[0031] Preferably, if the main photovoltaic panel and the auxiliary photovoltaic panel are turned on,

[0032] Obtaining a remaining power level of the battery of the photovoltaic module, and if the remaining power level is lower than a preset value, obtaining a charging power P3 of the battery;

[0033] The sum of the consumed power P2 and the charging power P3 is compared with the output power P1. If the output power P1 ≥ the consumed power P2 + the charging power P3, the battery charging is started; if the output power P1 < the consumed power P2 + the charging power P3, the battery charging is not started.

[0034] Preferably, if the main photovoltaic panel is turned on and the auxiliary photovoltaic panel is turned off,

[0035] Obtaining a remaining power level of the battery of the photovoltaic module, and if the remaining power level is lower than a preset value, obtaining a charging power P3 of the battery;

[0036] The sum of the consumed power P2 and the charging power P3 is compared with the output power P1. If the output power P1 ≥ the consumed power P2 + the charging power P3, the battery charging is started. If the output power P1 < the consumed power P2 + the charging power P3, the output power P1′ is calculated under the current multiplication coefficient E after the auxiliary photovoltaic panel is started. If the output power P1′ ≥ the consumed power P2 + the charging power P3, the battery charging is started. If the output power P1′ < the consumed power P2 + the charging power P3, the auxiliary photovoltaic panel is not started and the battery charging is not started.

[0037] Preferably, the photovoltaic assembly adopts the MPPT tracking method so that the photovoltaic panel always outputs the maximum power when the light changes.

[0038] The second purpose of this application is to provide an earthquake early warning terminal power supply system based on photovoltaic power supply, which is used to execute a photovoltaic power supply method for earthquake early warning terminals described in any embodiment of the present invention.

[0039] The second object of the present invention is achieved through the following technical solutions:

[0040] A photovoltaic-based earthquake early warning terminal power supply system, used to perform the above method, comprises:

[0041] A data acquisition module is used to obtain the output power P1 of the photovoltaic module per unit time and the open area A of the current photovoltaic panel in the photovoltaic module, wherein the photovoltaic panel includes a main photovoltaic panel and a secondary photovoltaic panel connected in series;

[0042] Central calculation module: used to calculate the product coefficient E of the current solar radiation Pin and the current photovoltaic panel conversion efficiency η based on the output power P1 and the open area A of the photovoltaic panel, and calculate the open area A' required for the photovoltaic panel to stably supply the early warning terminal under the condition of the product coefficient E;

[0043] Comprehensive control module: used to compare the area A' required to be opened for the photovoltaic panel with the opening area A of the current photovoltaic panel to adjust the opening plan of the photovoltaic panel, thereby adjusting the power supply strategy of the early warning terminal. The photovoltaic panel opening plan includes turning on the main photovoltaic panel and the auxiliary photovoltaic panel, and turning on the main photovoltaic panel and turning off the auxiliary photovoltaic panel.

[0044] In summary, this application includes at least one of the following beneficial technical effects:

[0045] 1. By dynamically adjusting the working status of the photovoltaic panels, it can adapt to different meteorological conditions in real time, ensuring that even when the solar radiation is unstable, it can still stably power the earthquake early warning terminal, thereby improving the reliability and stability of the system;

[0046] 2. By calculating and adjusting the open area of ​​the photovoltaic panels, the system accurately matches the actual power consumption requirements of the early warning terminal, avoiding energy waste caused by excessive or insufficient opening and improving energy utilization;

[0047] 3. Combined with the battery charge and discharge management strategy, when the output power of the photovoltaic panel is insufficient, the battery can be started to ensure the continuous operation of the early warning terminal, further enhancing the system's emergency response and risk resistance capabilities. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 This is an overall flow chart of the power supply method in Example 1 of the present application;

[0049] Figure 2 This is a specific flow chart of step S2 in Example 1 of the present application;

[0050] Figure 3 This is a specific flow chart of step S3 in Example 1 of the present application;

[0051] Figure 4 This is a specific flow chart of step S31 in Example 1 of the present application;

[0052] Figure 5 This is a specific flow chart of step S312 in Example 1 of the present application;

[0053] Figure 6 This is a specific flow chart of step S32 in Example 1 of the present application. DETAILED DESCRIPTION

[0054] The following will be combined with the Figure 1-6 The technical solutions in the embodiments of the present invention are clearly and completely described. The described embodiments are only possible technical implementations of the present invention and do not constitute a complete set of implementations. Those skilled in the art can combine the embodiments of the present invention to derive other embodiments without inventive work, and such embodiments are also within the scope of protection of the present invention.

[0055] Example 1:

[0056] A photovoltaic-based power supply method for an earthquake early warning terminal comprises:

[0057] S1. Obtain the output power P1 of the photovoltaic module per unit time and the open area A of the current photovoltaic panel in the photovoltaic module in a specific time period;

[0058] The photovoltaic module primarily consists of photovoltaic panels, brackets, connectors, and batteries. There are two photovoltaic panels: a primary panel and a secondary panel. The area of ​​the primary panel is twice that of the secondary panel, and the two panels are connected in series. The active area of ​​the panels is determined by the panel activation plan. These plans include either turning the primary and secondary panels on, or turning the primary and secondary panels off. The areas of the primary and secondary panels are fixed at the factory. The output power P1 of the photovoltaic module per unit time can be determined by monitoring the output current and voltage of the panels. The specific time period is the average daily sunlight period at the earthquake early warning terminal's location, for example, 9:00 AM to 6:00 PM. During other times, the photovoltaic module's battery provides power.

[0059] S2. Calculate the product coefficient E of the current solar radiation Pin and the current conversion efficiency η of the photovoltaic panel based on the output power P1 and the open area A of the photovoltaic panel. Calculate the open area A′ required for the photovoltaic panel to stably supply the warning terminal based on the product coefficient E.

[0060] In this embodiment, the open area A of the photovoltaic panel is the area of ​​the light-receiving surface, including the area of ​​the main photovoltaic panel and the area of ​​the auxiliary photovoltaic panel, and the opening of the photovoltaic panel is interpreted as the electricity generated by the photovoltaic panel directly supplying power to the early warning terminal. The output power of the photovoltaic panel, the area of ​​the photovoltaic panel, the solar radiation, and the conversion efficiency of the photovoltaic panel are determined by the following formula:

[0061] P = Pin × A × η;

[0062] Where P is the output power of the photovoltaic panel, Pin is the solar radiation, A is the area of ​​the photovoltaic panel, and η is the conversion efficiency of the photovoltaic panel.

[0063] Substituting this into the present case, we can obtain: E = P1 / A;

[0064] Among them, E is the product coefficient of the solar radiation Pin in the current weather and the conversion efficiency η of the current photovoltaic panel, P1 is the output power of the photovoltaic panel per unit time, and A is the open area of ​​the current photovoltaic panel. From this, the product coefficient E of the solar radiation Pin and the conversion efficiency η of the current photovoltaic panel per unit time can be calculated. Since the conversion rate of the photovoltaic panel is most affected by the current solar radiation and the angle of the sun's irradiation, in this embodiment, the photovoltaic module adopts the MPPT tracking method to adjust the working state of the photovoltaic module in real time so that the photovoltaic panel always outputs the maximum power curve when the light changes. For the fluctuating solar radiation Pin and the conversion efficiency η of the photovoltaic panel, the product coefficient E is used instead. For example: Assuming that the current photovoltaic panel output power P = 125W and the current photovoltaic panel open area A = 0.5㎡, the product coefficient E = 250.

[0065] After obtaining the current product coefficient E, the following steps S21-S22 are executed.

[0066] S21, obtaining the power consumption P2 of the warning terminal per unit time;

[0067] Specifically, the consumed power P2 is the power consumed by the early warning terminal during normal operation, that is, the load power, which can be directly obtained.

[0068] S22. Calculate the area A' required for the photovoltaic panel to stably supply the warning terminal based on the product coefficient E and the power consumption P2. The calculation method is as follows:

[0069] A′=P2 / E;

[0070] Where E is the product of the current solar radiation Pin and the current photovoltaic panel conversion efficiency η, P2 is the power consumed by the warning terminal per unit time, i.e., the power required for the warning terminal to operate, and A' is the area of ​​the photovoltaic panel required to stably supply the warning terminal. The required open area A' can be calculated from this. For example, based on the product coefficient E = 250 obtained in step S2 above, assuming the load power is 200W, the required open area of ​​the photovoltaic panel A' = 0.8 m2.

[0071] S3. Compare the area A′ required for the photovoltaic panel to be opened with the current opening area A of the photovoltaic panel to adjust the opening plan of the photovoltaic panel, thereby adjusting the power supply strategy of the early warning terminal. The photovoltaic panel opening plan includes turning on the main photovoltaic panel and the auxiliary photovoltaic panel, or turning on the main photovoltaic panel and turning off the auxiliary photovoltaic panel.

[0072] In this embodiment, by comparing the area A′ required to be opened for the photovoltaic panel with the current opening area A of the photovoltaic panel, it is possible to quickly understand whether the area of ​​the photovoltaic panel currently required to be opened exceeds the set area of ​​the photovoltaic panel, so as to quickly obtain whether the current output power can meet the required power requirements.

[0073] The specific judgment method is as follows: S31-S32 steps:

[0074] S31. When A′≥A, detect the activation status of the main photovoltaic panel and the auxiliary photovoltaic panel to quickly determine whether the output power of the current photovoltaic panel activation scheme can meet the required power requirement.

[0075] S311. If the main photovoltaic panel and the auxiliary photovoltaic panel are turned on, the battery of the photovoltaic assembly is started to supply power to the warning terminal;

[0076] It can be understood that when the main photovoltaic panel and the auxiliary photovoltaic panel are both in the on state, the opening area of ​​the photovoltaic panel is the opening area of ​​the main photovoltaic panel plus the opening area of ​​the auxiliary photovoltaic panel, and this scheme is the maximum opening area that the photovoltaic panel can reach. When the required opening area is greater than the maximum opening area, it means that the current solar radiation is low, and the photovoltaic panel cannot guarantee stable power supply to the early warning terminal at the maximum opening area. At this time, the power supply mode of the early warning terminal is switched to the battery of the photovoltaic module to power the early warning terminal.

[0077] S312. If the main photovoltaic panel is turned on and the auxiliary photovoltaic panel is turned off, calculate the photovoltaic panel open area A1′ after the auxiliary photovoltaic panel is turned on. If A′>A1′, start the battery of the photovoltaic module to power the early warning terminal; if A′≤A1′, the photovoltaic panel continues to power the early warning terminal.

[0078] In the above, when A′>A1′, if the opening area of ​​the photovoltaic panel after the auxiliary photovoltaic panel is turned on is smaller than the area required for normal supply of the early warning terminal, that is, the required opening area is larger than the maximum opening area, it means that the current solar radiation is low, and the photovoltaic panel cannot guarantee stable power supply to the early warning terminal even at the maximum opening area. At this time, the power supply mode of the early warning terminal is switched to the battery of the photovoltaic module to power the early warning terminal.

[0079] When A′≤A1′, it means that there is enough power for the early warning terminal to operate stably, and the excess power is calculated to see whether it can be used to charge the battery.

[0080] S3121. Obtain the remaining power status of the battery of the photovoltaic module. If the remaining power is lower than a preset value, obtain the charging power P3 of the battery.

[0081] The remaining battery power can be obtained by obtaining the battery voltage or calculated based on the rated capacity and discharge time of the battery. In this embodiment, if the preset value is 60%, that is, when the battery power is lower than 60%, the charging power P3 of the battery is obtained.

[0082] S3122. Calculate the output power P1′ of the photovoltaic panel under the current product coefficient E based on the photovoltaic panel opening area A1′. If the output power P1′ ≥ the consumed power P2 + the charging power P3, start battery charging; if the output power P1′ < the consumed power P2 + the charging power P3, do not start battery charging.

[0083] Specifically, the output power P1′ of the photovoltaic panel under the current multiplication coefficient E is calculated as follows:

[0084] P1′=E×A1′;

[0085] For example: after the main photovoltaic panel and the auxiliary photovoltaic panel are turned on, the photovoltaic panel open area A1′=0.8㎡, the current multiplication coefficient E=250, then the output power of the photovoltaic panel under the current multiplication coefficient E P1′=200W.

[0086] Assuming the load's power consumption P2 = 100W and charging power P3 = 80W, then if output power P1′ > power consumption P2 + charging power P3, the battery can be charged. Conversely, if output power P1′ > power consumption P2 + charging power P3, battery charging will not be initiated. It should be noted that power parameters are set based on actual needs and are provided for illustrative purposes only.

[0087] S32: When A′<A, detect the on-state of the main photovoltaic panel and the auxiliary photovoltaic panel.

[0088] Specifically, if the main photovoltaic panel and the auxiliary photovoltaic panel are turned on, or the main photovoltaic panel is turned on and the auxiliary photovoltaic panel is turned off, it means that the output power of the photovoltaic panels is sufficient for the early warning terminal to operate stably. At this time, in both states, the photovoltaic panels continue to supply power to the early warning terminal, and the overflow power is calculated to see whether it can charge the battery.

[0089] When the main photovoltaic panel and the auxiliary photovoltaic panel are turned on, the overflow power is calculated to determine whether the battery can be charged. For details, refer to the following steps S321-S322.

[0090] S321. Obtain the remaining power level of the battery of the photovoltaic module. If the remaining power level is lower than a preset value, obtain the charging power P3 of the battery.

[0091] The remaining battery power can be obtained by obtaining the battery voltage or calculated based on the rated capacity and discharge time of the battery. In this embodiment, if the preset value is 60%, that is, when the battery power is lower than 60%, the charging power P3 of the battery is obtained.

[0092] S322. Compare the sum of the consumed power P2 and the charging power P3 with the output power P1. If the output power P1 ≥ the consumed power P2 + the charging power P3, start charging the battery; if the output power P1 < the consumed power P2 + the charging power P3, do not start charging the battery.

[0093] Specifically, if both the main and auxiliary photovoltaic panels are currently on, the ratio of output power P1 to the sum of power consumption P2 and charging power P3 can be used to determine whether the current power available for the warning terminal to operate while also charging the battery. For example, if the current output power P1 = 190W, power consumption P2 = 100W, and charging power P3 = 80W, then if output power P1 ≥ power consumption P2 + charging power P3, then battery charging will be initiated. Conversely, if the current output power P1 = 150W, power consumption P2 = 100W, and charging power P3 = 80W, then if output power P1 < power consumption P2 + charging power P3, then battery charging will not be initiated.

[0094] When the main photovoltaic panel is turned on and the auxiliary photovoltaic panel is turned off, the overflow power is calculated to determine whether the battery can be charged. For details, refer to the following steps S323-S324.

[0095] S323: Obtain the remaining power level of the battery of the photovoltaic module. If the remaining power level is lower than a preset value, obtain the charging power P3 of the battery.

[0096] The remaining battery power can be obtained by obtaining the battery voltage or calculated based on the rated capacity and discharge time of the battery. In this embodiment, if the preset value is 60%, that is, when the battery power is lower than 60%, the charging power P3 of the battery is obtained.

[0097] S324. Compare the sum of the consumed power P2 and the charging power P3 with the output power P1. If the output power P1 ≥ the consumed power P2 + the charging power P3, start charging the battery. If the output power P1 < the consumed power P2 + the charging power P3, calculate the output power P1′ under the current multiplication coefficient E after starting the auxiliary photovoltaic panel. If the output power P1′ ≥ the consumed power P2 + the charging power P3, start charging the battery. If the output power P1′ < the consumed power P2 + the charging power P3, do not start the auxiliary photovoltaic panel and do not start charging the battery.

[0098] Specifically, when the primary PV panel is on and the secondary PV panel is off, if output power P1 ≥ power consumption P2 + charging power P3, the primary PV panel alone can currently supply power to the warning terminal and charge the battery, and battery charging can be initiated. If output power P1 < power consumption P2 + charging power P3, and the battery needs to be charged, an attempt is made to calculate whether sufficient power can be provided by activating the secondary PV panel. For example, assuming the area of ​​the primary PV panel is 0.6 m2 and the area of ​​the secondary PV panel is 0.3 m2, and the current output power P1 = 160 W, power consumption P2 = 100 W, and charging power P3 = 80 W, then the current multiplication coefficient E = 266.7 is calculated when only the primary PV panel is on. With the current multiplication coefficient E = 266.7, the output power P1′ of the secondary PV panel after activation is calculated as 266.7 × (0.3 + 0.6) = 240.03 W. In other words, if output power P1′ ≥ power consumption P2 + charging power P3, battery charging can be initiated. On the contrary, if the output power P1′ is less than the consumption power P2+charging power P3, the auxiliary photovoltaic panel will not be started and the battery charging will not be started to prevent the load from overvoltage.

[0099] In this embodiment, the battery module can be powered by both the mains and the photovoltaic panels. Specifically, when the battery charge falls below a predetermined level, such as 30%, and the photovoltaic panels are not supplying power to the battery, the mains is activated to maintain the battery's charge level. Furthermore, an overcurrent protection system, such as a battery management system (BMS), is incorporated into the battery module. This system disconnects the battery from charging once the battery is fully charged, preventing damage from overcharging.

[0100] The implementation principle of this embodiment is:

[0101] During specific time periods, such as 9:00 AM to 6:00 PM, when weather is changeable or solar radiation levels are unstable, the system calculates the current solar radiation levels and determines the required area of ​​photovoltaic panels to be activated for stable operation of the early warning terminal. This accurately matches the actual power consumption requirements of the early warning terminal, thereby adjusting the activated area of ​​the photovoltaic panels and dynamically adjusting their operating status. This allows the system to adapt to varying meteorological conditions in real time, ensuring stable power supply to the earthquake early warning terminal even in unstable solar radiation levels, thereby improving system reliability and stability. Furthermore, combined with the battery charge and discharge management strategy, the system can activate the battery to ensure continuous operation of the early warning terminal when the photovoltaic panel output power is insufficient, further enhancing the system's emergency response and risk mitigation capabilities.

[0102] Example 2:

[0103] A photovoltaic-based earthquake early warning terminal power supply system, used to implement the above power supply method, includes:

[0104] A data acquisition module is used to obtain the output power P1 of the photovoltaic module per unit time and the open area A of the current photovoltaic panel in the photovoltaic module, wherein the photovoltaic panel includes a main photovoltaic panel and a secondary photovoltaic panel connected in series;

[0105] Central calculation module: used to calculate the product coefficient E of the current solar radiation Pin and the current photovoltaic panel conversion efficiency η based on the output power P1 and the open area A of the photovoltaic panel, and calculate the open area A' required for the photovoltaic panel to stably supply the early warning terminal under the condition of the product coefficient E;

[0106] Integrated control module: used to compare the area A' required to be opened by the photovoltaic panel with the current opening area A of the photovoltaic panel to adjust the opening plan of the photovoltaic panel, thereby adjusting the power supply strategy of the early warning terminal. The photovoltaic panel opening plan includes turning on the main photovoltaic panel and the auxiliary photovoltaic panel, or turning on the main photovoltaic panel and turning off the auxiliary photovoltaic panel.

[0107] The implementation principle of this embodiment is:

[0108] The data acquisition module acquires the photovoltaic panel's output power per unit time in real time to monitor the panel's power output, thereby capturing current weather conditions. In cases of changeable weather or unstable solar radiation, the central computing module calculates the current solar radiation and determines the required photovoltaic panel area to be activated for stable operation of the supply warning terminal. This demand is then sent to the integrated control module, which adjusts the panel's activation area and dynamically adjusts its operating status to adapt to varying meteorological conditions. This ensures stable power supply to the earthquake warning terminal even in the presence of unstable solar radiation, improving the system's reliability and stability, and enhancing its emergency response and risk mitigation capabilities.

[0109] It should be noted that the above embodiments provide systems that implement their functions using only the division of the above functional modules as an example. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. In addition, the device and method embodiments provided in the above embodiments are based on the same concept. The specific implementation process is detailed in the method embodiment and will not be repeated here.

[0110] Example 3:

[0111] Embodiments of the present application provide a photovoltaic-powered power supply device for an earthquake early warning terminal. The device may include: at least one processor, at least one network interface, a user interface, a memory, and at least one communication bus. The processor is configured to invoke a photovoltaic-powered power supply method for an earthquake early warning terminal stored in the memory. When executed by one or more processors, the photovoltaic-powered power supply device for an earthquake early warning terminal performs one or more of the methods described in the aforementioned embodiments.

[0112] Example 4:

[0113] An embodiment of the present application also provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the above-mentioned embodiment of a photovoltaic-powered earthquake early warning terminal power supply method is implemented. To avoid repetition, it will not be repeated here.

[0114] It should be noted that for the aforementioned method embodiments, for simplicity of description, they are all expressed as a series of action combinations, but those skilled in the art should be aware that this application is not limited by the order of the actions described, because according to this application, certain steps can be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required for this application.

[0115] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A photovoltaic-based power supply method for earthquake early warning terminals, characterized in that: The method comprises: Obtaining the output power P1 of the photovoltaic module per unit time and the open area A of the current photovoltaic panel in the photovoltaic module in a specific time period, wherein the photovoltaic panel includes a main photovoltaic panel and a secondary photovoltaic panel connected in series; Calculate the product coefficient E of the solar radiation Pin in the current weather and the conversion efficiency η of the current photovoltaic panel based on the output power P1 and the open area A of the photovoltaic panel, and calculate the open area A′ required for the photovoltaic panel to stably supply the warning terminal based on the product coefficient E; Compare the area A′ required to be opened of the photovoltaic panel with the opening area A of the current photovoltaic panel to adjust the opening plan of the photovoltaic panel, thereby adjusting the power supply strategy of the early warning terminal. The photovoltaic panel opening plan includes turning on the main photovoltaic panel and the auxiliary photovoltaic panel, and turning on the main photovoltaic panel and turning off the auxiliary photovoltaic panel.

2. The method according to claim 1, characterized in that The product coefficient E is determined by the following formula: P = Pin × A × η; Where P is the output power of the photovoltaic panel, Pin is the solar radiation, A is the area of ​​the photovoltaic panel, and η is the conversion efficiency of the photovoltaic panel; From the above formula, we can see that E=P1 / A, Among them, E is the product coefficient of the current weather solar radiation Pin and the current photovoltaic panel conversion efficiency η, P1 is the output power of the photovoltaic panel per unit time, and A is the current photovoltaic panel open area. The product coefficient E can be calculated from this.

3. The method according to claim 2, characterized in that In the case of the multiplication coefficient E, the calculation of the area A′ required for the photovoltaic panel to stably supply the warning terminal includes: Obtaining the power consumption P2 of the warning terminal per unit time; The area A' required for the photovoltaic panel to stably supply the warning terminal is calculated based on the product coefficient E and the power consumption P2. The calculation method is as follows: A′=P2 / E; Among them, E is the product coefficient of the current weather solar radiation Pin and the current photovoltaic panel conversion efficiency η, P2 is the power consumption of the early warning terminal per unit time, that is, the power required for the early warning terminal to work, and A′ is the area required for the photovoltaic panel to stably supply the early warning terminal. From this, the required open area A′ can be calculated.

4. The method according to claim 3, characterized in that The comparing the area A′ required to be opened of the photovoltaic panel with the current opening area A of the photovoltaic panel to adjust the opening scheme of the photovoltaic panel, thereby adjusting the power supply strategy of the early warning terminal includes: When A′≥A, the power-on status of the main photovoltaic panel and the auxiliary photovoltaic panel is detected, If the main photovoltaic panel and the auxiliary photovoltaic panel are turned on, the battery of the photovoltaic assembly is started to supply power to the early warning terminal; If the main photovoltaic panel is turned on and the auxiliary photovoltaic panel is turned off, calculate the photovoltaic panel open area A1′ after the auxiliary photovoltaic panel is turned on. If A′>A1′, start the battery of the photovoltaic assembly to power the early warning terminal; if A′≤A1′, the photovoltaic panel continues to power the early warning terminal.

5. The method according to claim 4, characterized in that If A'≤A1': Obtaining a remaining power level of the battery of the photovoltaic module, and if the remaining power level is lower than a preset value, obtaining a charging power P3 of the battery; The output power P1′ of the photovoltaic panel under the current product coefficient E is calculated based on the photovoltaic panel opening area A1′. If the output power P1′ ≥ the consumed power P2 + the charging power P3, the battery charging is started; if the output power P1′ < the consumed power P2 + the charging power P3, the battery charging is not started.

6. The method according to claim 3, characterized in that The step of comparing the area A′ required to be opened of the photovoltaic panel with the current opened area A of the photovoltaic panel to adjust the opening scheme of the photovoltaic panel and thereby adjust the power supply strategy of the early warning terminal further includes: When A′<A, the power-on status of the main photovoltaic panel and the auxiliary photovoltaic panel is detected, If the main photovoltaic panel and the auxiliary photovoltaic panel are turned on, or the main photovoltaic panel is turned on and the auxiliary photovoltaic panel is turned off, the photovoltaic panels are kept on continuously supplying power to the early warning terminal.

7. The method according to claim 6, characterized in that If the main photovoltaic panel and the auxiliary photovoltaic panel are turned on, Obtaining a remaining power level of the battery of the photovoltaic module, and if the remaining power level is lower than a preset value, obtaining a charging power P3 of the battery; The sum of the consumed power P2 and the charging power P3 is compared with the output power P1. If the output power P1 ≥ the consumed power P2 + the charging power P3, the battery charging is started; if the output power P1 < the consumed power P2 + the charging power P3, the battery charging is not started.

8. The method according to claim 6, characterized in that If the main photovoltaic panel is turned on and the auxiliary photovoltaic panel is turned off, Obtaining a remaining power level of the battery of the photovoltaic module, and if the remaining power level is lower than a preset value, obtaining a charging power P3 of the battery; The sum of the consumed power P2 and the charging power P3 is compared with the output power P1. If the output power P1 ≥ the consumed power P2 + the charging power P3, the battery charging is started. If the output power P1 < the consumed power P2 + the charging power P3, the output power P1′ is calculated under the current multiplication coefficient E after the auxiliary photovoltaic panel is started. If the output power P1′ ≥ the consumed power P2 + the charging power P3, the battery charging is started. If the output power P1′ < the consumed power P2 + the charging power P3, the auxiliary photovoltaic panel is not started and the battery charging is not started.

9. The method according to claim 7, characterized in that The photovoltaic assembly adopts the MPPT tracking method to ensure that the photovoltaic panel always outputs the maximum power when the light changes.

10. A power supply system for executing any one of the methods 1-9 above, characterized in that: include: A data acquisition module is used to obtain the output power P1 of the photovoltaic module per unit time and the open area A of the current photovoltaic panel in the photovoltaic module, wherein the photovoltaic panel includes a main photovoltaic panel and a secondary photovoltaic panel connected in series; Central calculation module: used to calculate the product coefficient E of the current solar radiation Pin and the current photovoltaic panel conversion efficiency η based on the output power P1 and the open area A of the photovoltaic panel, and calculate the open area A' required for the photovoltaic panel to stably supply the early warning terminal under the condition of the product coefficient E; Comprehensive control module: used to compare the area A' required to be opened for the photovoltaic panel with the opening area A of the current photovoltaic panel to adjust the opening plan of the photovoltaic panel, thereby adjusting the power supply strategy of the early warning terminal. The photovoltaic panel opening plan includes turning on the main photovoltaic panel and the auxiliary photovoltaic panel, and turning on the main photovoltaic panel and turning off the auxiliary photovoltaic panel.

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