Photovoltaic street lamp alarm system

Abstract

The utility model provides a photovoltaic street lamp alarm system, and belongs to the technical field of intelligent alarm. The photovoltaic street lamp alarm system comprises a photovoltaic power generation module, a wind power generation module, a selection module, a first switch module, an energy storage module, a street lamp control module, a second switch module, a power amplification module, a third switch module, a current detection module, a main control module, a communication module and an alarm module. The photovoltaic power generation module and the wind power generation module are both used for charging the street lamp and the energy storage module. The energy storage module is connected with the power amplification module through the second switch module. The power amplification module is connected with the master control module and the alarm module. The main control module is connected with the terminal system through the communication module and is configured to send the air defense alarm signal to the alarm module for early warning. The system is deployed at the low point of a city, supplies power to the street lamp and the alarm module based on new energy, guarantees the normal operation of the alarm module, and meets the requirements of the air defense alarm secondary alarm capability.

Description

Technical Field

[0001] This disclosure relates to the field of intelligent alarm technology, and in particular to a photovoltaic street light alarm system. Background Technology

[0002] Air raid sirens are typically installed at high locations, such as building rooftops, broadcast towers, or dedicated alarm towers. Such installations ensure the sound travels further and is less likely to be blocked by obstacles. However, in densely populated urban areas, air raid sirens installed too high make it difficult for people on the ground to accurately receive the alarm information, hindering emergency evacuation in the event of danger. Utility Model Content

[0003] This disclosure provides a photovoltaic street light alarm system to solve the problem that existing air raid alarm systems have narrow coverage and are difficult to effectively evacuate when danger strikes.

[0004] A photovoltaic street light alarm system includes:

[0005] Photovoltaic power generation module, wind power generation module, selection module, first switch module, energy storage module, street light control module, second switch module, power amplifier module, third switch module, current detection module, main control module, communication module and alarm module;

[0006] The control terminal of the first switch module, the street light control module, the second switch module, the third switch module, the current detection module, and the communication module are all connected to the main control module;

[0007] The photovoltaic power generation module and the wind power generation module are both connected to the selection module. The selection module is connected to the moving end of the first switch module. The first stationary end of the first switch module is connected to the energy storage module. The second stationary end of the first switch module is connected to the street light control module.

[0008] The street light control module is used to connect to the street light;

[0009] The energy storage module is also connected to the power amplifier module via the second switch module, and the power amplifier module is connected to the alarm module via the third switch module; the current detection module is configured to detect the current output by the power amplifier module; the communication module is used to connect to the terminal system and is configured to receive air raid alarm signals.

[0010] In one exemplary embodiment of this disclosure, the photovoltaic street light alarm system further includes:

[0011] Reference module and first voltage detection module;

[0012] The reference module is connected to the alarm module and the first voltage detection module, respectively. The first voltage detection module is connected to the main control module. The first voltage detection module is configured to detect the voltage across the reference module.

[0013] In one exemplary embodiment of this disclosure, the photovoltaic street light alarm system further includes:

[0014] The system includes a voltage regulator module, a step-down module, a second voltage detection module, and a fourth switching module.

[0015] The voltage regulator module is connected to the second voltage detection module, the first stationary terminal of the first switching module, the step-down module, and the fourth switching module, respectively.

[0016] The second voltage detection module is also connected to the main control module and is configured to collect the voltage input to the voltage regulator module;

[0017] The step-down module is also connected to the energy storage module, and the fourth switch module is also connected to the main control module.

[0018] In one exemplary embodiment of this disclosure, the photovoltaic street light alarm system further includes:

[0019] Third voltage detection module, fourth voltage detection module;

[0020] Both the third voltage detection module and the fourth voltage detection module are connected to the main control module;

[0021] The third voltage detection module is configured to collect the output voltage of the photovoltaic power generation module, and the fourth voltage detection module is configured to collect the output voltage of the wind power generation module.

[0022] In one exemplary embodiment of this disclosure, the photovoltaic street light alarm system further includes:

[0023] Overcharge detection module;

[0024] The overcharge detection module is connected to the energy storage module and the main control module, respectively.

[0025] In one exemplary embodiment of this disclosure, the photovoltaic street light alarm system further includes:

[0026] Over-discharge detection module;

[0027] The over-discharge detection module is connected to the energy storage module and the main control module, respectively.

[0028] In one exemplary embodiment of this disclosure, the energy storage module is also used to connect to an external power grid.

[0029] In one exemplary embodiment of this disclosure, the alarm module is one of a buzzer, a speaker, an audible and visual alarm, or a voice broadcaster.

[0030] In one exemplary embodiment of this disclosure, the energy storage module is either a lithium-ion battery pack or a gel battery.

[0031] The beneficial effects of the photovoltaic street light alarm system provided in this embodiment are as follows:

[0032] On the one hand, this embodiment combines photovoltaic power generation with wind power generation, achieving a green and sustainable energy supply and solving the problem of traditional air raid alarm equipment's dependence on mains power. Through the selection module and the first switch module, the system can efficiently utilize energy, ensuring the stable operation of streetlights and the alarm system.

[0033] On the other hand, the system, attached to streetlight poles, is small in size and capable of multi-point deployment across areas, significantly enhancing the coverage of alarm sounds in urban low-altitude and ground areas. Upon receiving an air raid siren signal, the system can respond quickly, driving the alarm through a power amplification module, thus improving the timeliness and effectiveness of the air raid siren.

[0034] On the other hand, the system has intelligent management functions, which can periodically check the status of the power amplifier module to ensure its normal operation. When a power amplifier module is detected to be damaged, the system can promptly send fault information to the terminal system through the communication module, facilitating timely repair and replacement by technicians, thereby ensuring the reliability and stability of the system. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this disclosure, 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 this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 This is a schematic diagram of the structure of a photovoltaic street light alarm system provided in one embodiment of the present disclosure;

[0037] Figure 2 This is a schematic diagram of the structure of a photovoltaic street light alarm system provided in another embodiment of this disclosure;

[0038] Figure 3 This is a schematic diagram of the energy supply section of a photovoltaic street light alarm system according to an embodiment of the present disclosure;

[0039] Figure 4 This is a schematic diagram of the energy supply section of a photovoltaic street light alarm system provided in another embodiment of this disclosure. Detailed Implementation

[0040] To enable those skilled in the art to better understand this solution, the technical solutions in the embodiments of this solution will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this solution, not all of them. Based on the embodiments of this solution, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this solution.

[0041] The term "comprising" and any other variations thereof in the specification, claims, and accompanying drawings of this invention mean "including but not limited to," and are intended to cover a non-exclusive inclusion, not limited to the examples listed herein. Furthermore, the terms "first" and "second," etc., are used to distinguish different objects, not to describe a specific order.

[0042] The implementation of this disclosure will be described in detail below with reference to the specific accompanying drawings:

[0043] Figure 1 This is a schematic diagram of a photovoltaic street light alarm system provided in an embodiment of this disclosure. (Refer to...) Figure 1 The photovoltaic street light alarm system includes:

[0044] Photovoltaic power generation module, wind power generation module, selection module, first switch module, energy storage module, street light control module, second switch module, power amplifier module, third switch module, current detection module, main control module, communication module and alarm module;

[0045] The control terminal of the first switch module, the street light control module, the second switch module, the third switch module, the current detection module, and the communication module are all connected to the main control module;

[0046] Both the photovoltaic power generation module and the wind power generation module are connected to the selection module. The selection module is connected to the moving end of the first switch module. The first stationary end of the first switch module is connected to the energy storage module. The second stationary end of the first switch module is connected to the street light control module.

[0047] The street light control module is used to connect to the street light;

[0048] The energy storage module is also connected to the power amplifier module via a second switch module, and the power amplifier module is connected to the alarm module via a third switch module; the current detection module is configured to detect the current output by the power amplifier module; the communication module is used to connect to the terminal system and is configured to receive air raid alarm signals.

[0049] In this embodiment, solar photovoltaic power generation is based on the photovoltaic effect, using solar cells to directly convert sunlight into electrical energy. The photovoltaic power generation module consists of multiple photovoltaic arrays connected in series. The working principle of the photovoltaic array generating electricity is as follows: When sunlight shines on the semiconductor PN junction, a strong built-in electrostatic field is generated in the P-N junction barrier region. This causes non-equilibrium electrons and holes generated in the barrier region, or those generated outside the barrier region but diffused into it, to move in opposite directions under the influence of the built-in electrostatic field, leaving the barrier region. As a result, the potential of the P region increases, and the potential of the N region decreases, thereby generating voltage and current in the external circuit, converting light energy into electrical energy. Because the voltage generated by each photovoltaic array is small, multiple photovoltaic arrays are connected in series to generate the voltage required for streetlight operation.

[0050] Considering that photovoltaic power generation is greatly affected by sunlight, this embodiment also includes a wind power generation module. The wind power generation module includes a wind turbine, a speed increaser, and a generator. The principle of wind power generation is as follows: wind drives the wind turbine to rotate, converting wind energy into kinetic energy; the speed increaser converts the low-speed rotation generated by the wind turbine shaft into the high-speed rotation required by the generator, thereby driving the generator to generate electricity.

[0051] In this embodiment, both the photovoltaic (PV) power generation module and the wind power generation module can supply power to the street light control module and the street lights, or to the energy storage module, via the first switch module. The first switch module is a single-pole double-throw switch. Under normal circumstances (e.g., during the day), its first stationary terminal and moving terminal are closed, allowing the electrical energy generated by the PV and wind power generation modules to charge the energy storage module. When the energy storage module is fully charged, its second stationary terminal and moving terminal are closed, and the PV and wind power generation modules supply power to the street light control module and the street lights. When there is insufficient sunlight or no wind, the first switch module is open, and the energy storage module supplies power to the street lights. In this embodiment, the selection module can be a comparator, used to select the PV or wind power generation module with the higher output voltage to supply power to the street lights.

[0052] In this embodiment, the alarm module is one of a buzzer, speaker, audible and visual alarm, or voice broadcaster. The main control module can receive instructions sent by the terminal system via wireless communication, and issue alarm sound signals according to the instructions sent by the terminal system. The alarm sound signals are then transmitted to the power amplifier module, which amplifies the signal and sends it to the alarm module for alarm activation. The main control module can also receive voice broadcast information sent by the terminal system and send the voice broadcast information to the power amplifier module, which amplifies the signal and sends it to the alarm module for voice broadcast.

[0053] The photovoltaic street light alarm system involved in this embodiment is a new energy air defense alarm terminal system deployed at low points in the city to compensate for the lack of low-altitude alarm sound coverage. Existing high-power air defense alarm equipment is deployed at high points in the city, resulting in poor alarm sound coverage at low points and ground areas. The street light alarm system based on new energy power supply relies on solar and wind power for energy supplementation, can operate completely independently of the mains power, meets the requirement of "secondary alarm" capability for air defense alarms, and supports multi-point deployment in the area to enhance the regional alarm sound coverage capability.

[0054] Generally, air raid sirens only sound at specific times, so the power amplifier alarm module is usually in sleep mode. To ensure the power amplifier module functions properly when the system receives an air raid warning signal, the system needs to periodically check its status. For example, a timer can be set in the main control module. When the specified time arrives, the main control module controls the second switch module to close and the third switch module to open, allowing the energy storage module to supply power to the power amplifier module. The current detection module then detects the output current of the power amplifier module to determine if it is damaged. If the current detection module detects current, the power amplifier module is not damaged; if it does not detect current, the power amplifier module is damaged. When a power amplifier module is determined to be damaged, the main control module can send fault information to the terminal system via the communication module. Upon receiving the information, the terminal system can then dispatch technicians for timely repair and replacement.

[0055] As can be seen from the above, on the one hand, this embodiment combines photovoltaic power generation with wind power generation, realizing a green and sustainable energy supply and solving the problem of traditional air raid alarm equipment's dependence on mains power. Through the selection module and the first switch module, the system can efficiently utilize energy, ensuring the stable operation of streetlights and the alarm system. On the other hand, the system is attached to the streetlight pole, has a small size, and possesses multi-point deployment capabilities, significantly enhancing the alarm sound coverage effect in urban low-altitude and ground areas. Upon receiving an air raid alarm signal, the system can respond quickly, driving the alarm through the power amplification module, improving the timeliness and effectiveness of the air raid alarm. Furthermore, the system has intelligent management functions, capable of periodically checking the status of the power amplification module to ensure its normal operation. When a power amplification module is detected to be damaged, the system can promptly send fault information to the terminal system through the communication module, facilitating timely repair and replacement by technicians, thereby ensuring the reliability and stability of the system.

[0056] refer to Figure 2 In one embodiment of this disclosure, the photovoltaic street light alarm system further includes:

[0057] Reference module and first voltage detection module;

[0058] The reference module is connected to the alarm module and the first voltage detection module, respectively. The first voltage detection module is connected to the main control module. The first voltage detection module is configured to detect the voltage across the reference module.

[0059] In this embodiment, the reference module and the alarm module are connected in series. The reference module can be a resistor with a specific resistance value. Because the alarm module only needs to issue an early warning at a specific time, the second and third switch modules are usually in the off state, and no current flows through the power amplifier module and the alarm module. However, the system needs to periodically determine whether the alarm module is working properly. Therefore, in this embodiment, the reference module and the alarm module are connected in series. When the alarm module is not short-circuited, the first voltage detection module detects that the voltage across the reference module is normal. When the alarm module is short-circuited, the current flowing through the reference module increases, and therefore the voltage across it also increases. Based on the voltage value detected by the first voltage detection module, it can be determined whether the alarm module has malfunctioned.

[0060] When the alarm module malfunctions, the main control module can send an abnormal signal to the terminal system via the communication module. After seeing the information, the staff of the terminal system can notify the relevant personnel to come for repair.

[0061] As can be seen from the above, this embodiment can realize the periodic inspection of the alarm module status, ensuring that the alarm module can work normally when the system receives air defense early warning signals.

[0062] refer to Figure 3 In one embodiment of this disclosure, the photovoltaic street light alarm system further includes:

[0063] The system includes a voltage regulator module, a step-down module, a second voltage detection module, and a fourth switching module.

[0064] The voltage regulator module is connected to the second voltage detection module, the first stationary terminal of the first switching module, the step-down module, and the fourth switching module, respectively.

[0065] The second voltage detection module is also connected to the main control module and is configured to collect the voltage input to the voltage regulator module;

[0066] The step-down module is also connected to the energy storage module, and the fourth switch module is also connected to the main control module.

[0067] In this embodiment, the energy storage module can be one of the following: a lithium-ion battery pack, a gel battery, or a similar battery. Because the working principle of a battery is based on chemical reactions, the positive and negative electrode materials undergo chemical reactions during charging and discharging. A stable voltage input helps maintain the dynamic equilibrium of these chemical reactions, thereby ensuring that the battery voltage remains stable and extending the battery's lifespan.

[0068] In addition, the battery is composed of multiple individual cells, which are combined into a whole through series and parallel connections. A stable voltage input can protect critical components inside the battery, such as the electrolyte and separator, from damage due to voltage fluctuations during charging and discharging.

[0069] Based on this, a voltage regulator module, a step-down module, a second voltage detection module, and a fourth switch module were added to the photovoltaic street light alarm system. When the voltage value detected by the second voltage detection module is greater than the maximum input voltage of the energy storage module, the main control module controls the fourth switch module to open, and the voltage output by the photovoltaic power generation module or wind power generation module is input to the energy storage module after being regulated and stepped down. When the voltage value detected by the second voltage detection module is within the normal output voltage range of the energy storage module, the main control module controls the fourth switch module to close, and the voltage output by the photovoltaic power generation module or wind power generation module can be directly input to the energy storage module.

[0070] As can be seen from the above, this embodiment can effectively protect the energy storage module. When the voltage input to the energy storage module is too high, it is stabilized and stepped down before being input to the module, effectively protecting the internal components of the battery and extending its service life. Simultaneously, the system intelligently switches the transmission path of the voltage output from the photovoltaic or wind power generation module based on the voltage detection results, ensuring that the energy storage module operates within a safe and efficient voltage range, thus improving the stability and reliability of the photovoltaic street light alarm system.

[0071] refer to Figure 4 In one embodiment of this disclosure, the photovoltaic street light alarm system further includes:

[0072] Third voltage detection module, fourth voltage detection module;

[0073] Both the third voltage detection module and the fourth voltage detection module are connected to the main control module.

[0074] The third voltage detection module is configured to collect the output voltage of the photovoltaic power generation module, and the fourth voltage detection module is configured to collect the output voltage of the wind power generation module.

[0075] In this embodiment, when the voltage outputs of both the photovoltaic power generation module and the wind power generation module are sufficient to ensure the normal operation of the street light within the same time period, it is necessary to select one of the power supply methods. Therefore, a third voltage detection module and a fourth voltage detection module are designed in the photovoltaic street light alarm system. The third voltage detection module is used to collect the output voltage of the photovoltaic power generation module, and the fourth voltage detection module is used to collect the output voltage of the wind power generation module.

[0076] The main control module contains a voltage comparator. The voltage acquired by the third voltage detection module is input to the non-inverting input of the voltage comparator, and the voltage acquired by the fourth voltage detection module is input to the inverting input. A high-level output signal indicates that the voltage output by the photovoltaic module is greater than that of the wind power module; a low-level output signal indicates that the voltage output by the photovoltaic module is less than that of the wind power module. Therefore, the main control module can control the selection module to choose the renewable energy module with the higher output voltage for power supply based on the signal output by the voltage comparator.

[0077] As can be seen from the above, this embodiment, by setting up a third voltage detection module and a fourth voltage detection module, achieves real-time monitoring and comparison of the output voltages of the photovoltaic power generation module and the wind power generation module. This embodiment can intelligently select the new energy module with the higher output voltage for power supply, ensuring the normal operation of the streetlights, while improving energy utilization efficiency and system flexibility.

[0078] refer to Figure 4 In one embodiment of this disclosure, the energy storage module is also used to connect to an external power grid. When neither the photovoltaic power generation module nor the wind power generation module can supply power, the mains power from the external power grid can supply power to the energy storage module, ensuring the normal operation of the alarm module and the streetlights.

[0079] refer to Figure 4 In one embodiment of this disclosure, the photovoltaic street light alarm system further includes:

[0080] Overcharge detection module;

[0081] The overcharge detection module is connected to both the energy storage module and the main control module.

[0082] In this embodiment, the overcharge detection module continuously monitors the voltage or charging current of the energy storage module to determine if there is a risk of overcharging. The overcharge detection module is also connected to the main control module and can send detection signals to it. When the main control module detects that the energy storage module is in an overcharged state, it can control the first switch module to switch to powering the streetlights, thereby protecting the energy storage module from overcharge damage.

[0083] As can be seen from the above, this embodiment provides an additional layer of protection for the photovoltaic street light alarm system by introducing an overcharge detection module. This not only enhances the system's safety but also improves its overall performance and reliability.

[0084] refer to Figure 4 In one embodiment of this disclosure, the photovoltaic street light alarm system further includes:

[0085] Over-discharge detection module;

[0086] The over-discharge detection module is connected to the energy storage module and the main control module, respectively.

[0087] In this embodiment, the over-discharge detection module is directly connected to the energy storage module, enabling real-time monitoring of the energy storage module's discharge state. The over-discharge detection module continuously monitors the voltage or discharge current of the energy storage module to determine whether the energy storage module is in an over-discharge state. When the main control module detects that the energy storage module is in an over-discharge state, the main control module can disconnect the second switch module, stopping the energy storage module from supplying power to the alarm module.

[0088] As can be seen from the above, the over-discharge detection module can monitor the discharge status of the energy storage module in real time, effectively preventing damage to the energy storage module due to excessive discharge and extending its service life. Simultaneously, this module is connected to the main control module and can promptly report abnormal situations, ensuring the system can take timely protective measures. This avoids problems such as street light outages caused by energy storage module failures, improving the overall performance and stability of the photovoltaic street light alarm system.

[0089] The above embodiments are only used to illustrate the technical solutions of this disclosure, and are not intended to limit it. Although this disclosure has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this disclosure.

Claims

1. A photovoltaic street light alarm system, characterized in that, include: Photovoltaic power generation module, wind power generation module, selection module, first switch module, energy storage module, street light control module, second switch module, power amplifier module, third switch module, current detection module, main control module, communication module and alarm module; The control terminal of the first switch module, the street light control module, the second switch module, the third switch module, the current detection module, and the communication module are all connected to the main control module; The photovoltaic power generation module and the wind power generation module are both connected to the selection module. The selection module is connected to the moving end of the first switch module. The first stationary end of the first switch module is connected to the energy storage module. The second stationary end of the first switch module is connected to the street light control module. The street light control module is used to connect to the street light; The energy storage module is also connected to the power amplifier module via the second switch module, and the power amplifier module is connected to the alarm module via the third switch module; the current detection module is configured to detect the current output by the power amplifier module; the communication module is used to connect to the terminal system and is configured to receive air raid alarm signals.

2. The photovoltaic street light alarm system as described in claim 1, characterized in that, Also includes: Reference module and first voltage detection module; The reference module is connected to the alarm module and the first voltage detection module, respectively. The first voltage detection module is connected to the main control module. The first voltage detection module is configured to detect the voltage across the reference module.

3. The photovoltaic street light alarm system as described in claim 1, characterized in that, Also includes: The system includes a voltage regulator module, a step-down module, a second voltage detection module, and a fourth switching module. The voltage regulator module is connected to the second voltage detection module, the first stationary terminal of the first switching module, the step-down module, and the fourth switching module, respectively. The second voltage detection module is also connected to the main control module and is configured to collect the voltage input to the voltage regulator module; The step-down module is also connected to the energy storage module, and the fourth switch module is also connected to the main control module.

4. The photovoltaic street light alarm system as described in claim 1, characterized in that, Also includes: Third voltage detection module, fourth voltage detection module; Both the third voltage detection module and the fourth voltage detection module are connected to the main control module; The third voltage detection module is configured to collect the output voltage of the photovoltaic power generation module, and the fourth voltage detection module is configured to collect the output voltage of the wind power generation module.

5. The photovoltaic street light alarm system as described in claim 1, characterized in that, Also includes: Overcharge detection module; The overcharge detection module is connected to the energy storage module and the main control module, respectively.

6. The photovoltaic street light alarm system as described in claim 1, characterized in that, Also includes: Over-discharge detection module; The over-discharge detection module is connected to the energy storage module and the main control module, respectively.

7. The photovoltaic street light alarm system as described in claim 1, characterized in that, The energy storage module is also used to connect to an external power grid.

8. The photovoltaic street light alarm system as described in claim 1, characterized in that, The alarm module is one of a buzzer, a speaker, an audible and visual alarm, or a voice broadcaster.

9. The photovoltaic street light alarm system as described in claim 1, characterized in that, The energy storage module is either a lithium-ion battery pack or a gel battery.

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