Photovoltaic intelligent umbrella control system

Abstract

The application discloses a photovoltaic intelligent umbrella control system, and relates to the technical field of intelligent outdoor equipment, comprising: a rainwater identification module for sensing rainfall and generating a control instruction; a wind speed measurement module for monitoring environmental wind power; a distance detection module for detecting obstacles on a travel path and triggering an obstacle avoidance stop signal; a visual identification module for wide-angle multi-classification identification to distinguish between moving and fixed objects and identify table personnel; a four-wheel drive module for carrying an umbrella body and driving the umbrella body to move; a light chasing movement module arranged at the umbrella top for light sensing and adjusting the umbrella surface orientation; an energy storage module for supplying power to various electrical equipment of the system; and a master control module for controlling the work of various modules of the system. The photovoltaic self-powered, multi-sensor sensing, intelligent moving opening and closing and all-scene safe cooperative control are realized.

Description

Technical Field

[0001] This invention relates to the field of intelligent outdoor equipment technology, specifically to a photovoltaic intelligent umbrella control system. Background Technology

[0002] Existing photovoltaic umbrella technologies primarily focus on energy harvesting and static functional expansion. For example, some designs fix photovoltaic panels to the umbrella surface to generate electricity and power integrated devices such as LED lights, cameras, or USB charging ports. Other solutions aim to optimize the efficiency and reliability of the photovoltaic system, such as using quickly removable and replaceable thin-film photovoltaic panel modules to improve power generation efficiency in different environments. Still other solutions combine photovoltaic umbrellas with the Internet of Things (IoT) to enable remote control of functions such as positioning, lighting, or communication via mobile devices.

[0003] However, existing technologies mostly treat photovoltaic umbrellas as fixed facilities, with their intelligence primarily reflected in energy management and additional electrical functions, lacking the ability for the umbrella itself to move autonomously and adapt to complex environments. The few designs that do possess mobility have limited application scenarios and movement methods. For example, some intelligent drying systems use sliders and rails to achieve linear movement and opening / closing of the umbrella, but their initial design purpose is for providing rain protection in fixed drying areas, resulting in a single movement trajectory and a lack of comprehensive environmental perception and obstacle avoidance capabilities. Another approach is to use quadcopter drones to carry the umbrella for aerial following, but this suffers from short battery life, stability highly susceptible to wind, high cost, and unsuitability for fixed tabletop scenarios. Summary of the Invention

[0004] This invention provides a photovoltaic smart umbrella control system that enables photovoltaic self-powered operation, multi-sensor sensing, intelligent mobile opening and closing, and full-scene safety collaborative control.

[0005] The technical solution of this invention is: a photovoltaic intelligent umbrella control system, comprising: The rain detection module is used to sense rainfall and generate control commands; Wind speed measurement module, used to monitor ambient wind speed; The distance detection module is used to detect obstacles on the travel path and trigger an obstacle avoidance stop signal; The visual recognition module is used for wide-angle multi-class recognition to distinguish between moving and stationary objects and to identify people at tables. The four-wheel drive module carries the umbrella and drives its movement. A light-tracking moving module, located at the top of the umbrella, is used to sense light and adjust the orientation of the umbrella surface; Energy storage modules are used to supply power to various electrical devices in the system; The master control module is used to control the operation of all modules in the system.

[0006] As a further improvement of the present invention, the master control module is configured to execute the following collaborative control logic: In response to the rainfall signal from the rain recognition module and the signal from the visual recognition module that someone is at the table, the four-wheel drive module is controlled to move along the path recognized by the tracking module to the umbrella opening point, and the opening and closing module is controlled to open the umbrella surface. In response to the strong wind signal from the wind speed measurement module, the corresponding operation is performed according to the different states of the umbrella: if it is at the starting point, movement and opening of the umbrella are prohibited; if it is in motion, it is controlled to return to the starting point; if it is in the process of opening the umbrella, it is controlled to close the umbrella surface and return; if the umbrella has already opened, it is controlled to move to the opening point, close the umbrella surface, and then return. In response to the obstacle avoidance stop signal from the distance detection module, the umbrella body is controlled to stop first and the umbrella surface is kept closed. In response to the light signal from the light-tracking moving module, the umbrella surface is controlled to rotate after it is opened to maintain its orientation towards the light.

[0007] As a further improvement of the present invention, the rainwater recognition module executes the following control logic: When a rain signal and a person are detected, control all umbrellas to move to the table and open them to block the rain. When someone is detected at the table, the umbrella is moved to the preset opening point and opens to block the rain. When both wind and rain signals are detected, the umbrella stops all movement. When a light signal and a person are detected, control all umbrellas to move to the table and open the umbrellas to provide shade.

[0008] As a further improvement of the present invention, the wind speed measurement module executes the following control logic: When the umbrella is at the starting point, a strong wind signal is detected, and there are people at the table, the umbrella must not be moved or opened. If a strong wind signal is detected during the parachute's movement, the parachute will be controlled to return to the starting point. If a strong wind signal is detected during the umbrella's opening process, the umbrella will close and return to the starting point. When a strong wind signal is detected while the umbrella is already open, the control system moves the umbrella to the opening point, closes the canopy, and then returns to the starting point.

[0009] As a further improvement of the present invention, the light-tracking movement module executes the following control logic: After the umbrella opens, it is light-sensitive, and the movement of the umbrella is controlled to keep the umbrella surface facing the light. When a rainfall signal is detected, the control umbrella is kept above the personnel.

[0010] As a further improvement of the present invention, the energy storage module includes a charging unit, an energy storage battery, and a battery management unit; the charging unit includes a solar interface and an AC power interface; the charging unit is connected to the energy storage battery; the battery management unit is connected to an adaptive MPPT controller, which dynamically adjusts the maximum power point of the photovoltaic panel based on the light intensity, temperature, and humidity data collected by the environmental monitoring module through an optimization algorithm.

[0011] As a further improvement of the present invention, the adaptive MPPT controller employs an improved gray wolf optimization algorithm, which optimizes the search step size by introducing an environmental fitness function, defined as: F = η·Ppv - λ·(Tbattery - Topt)²; Where η is the photovoltaic conversion efficiency, Ppv is the real-time output power of the photovoltaic panel, Tbattery is the temperature of the energy storage box, Topt is the optimal operating temperature of the battery, and λ is the temperature penalty coefficient.

[0012] As a further improvement of the present invention, it also includes a tracking module and a steering axis module. The tracking module is used to identify the ground route color, starting point, umbrella opening point and end point position at the table edge, which can avoid ground signal interference. The steering axis module is connected to the light-tracking moving module and is used to perform the rotation of the umbrella surface. The visual recognition module is set on the umbrella pole, and its bottom surface has multiple interfaces connected to the tracking module.

[0013] As a further improvement of the present invention, it also includes a remote control module, which establishes a wireless communication connection with the main control module. The remote control module has a built-in wireless transceiver unit, a control button group and a power supply unit. The remote control module is equipped with independent control logic, enabling it to operate independently of the environmental detection unit and automatic control strategy. It can receive manual operation commands and send control signals to the main control unit, independently driving the umbrella to complete opening and closing actions, horizontal position movement, and angle adjustment actions, thus realizing manual remote control of the photovoltaic smart umbrella.

[0014] As a further improvement of the present invention, the signals from the rain recognition module, wind speed measurement module, and distance detection module work together; when rain and strong wind are detected simultaneously, the main control module controls the umbrella to stop moving; when rain is detected and the distance detection module identifies an obstacle on the path, the obstacle avoidance stop logic is executed first.

[0015] The present invention has the following beneficial effects: 1. By integrating multiple sensors such as rain, wind speed, vision, distance, tracking, and light tracking, and coupled with complex collaborative control algorithms, the umbrella achieves full-process automation from "perceiving the environment" to "decision execution," significantly improving the intelligence level of outdoor services and user experience.

[0016] 2. A multi-layered safety logic was designed to address complex outdoor weather conditions and emergencies. In particular, the graded response strategy for strong winds and the obstacle avoidance priority logic effectively ensure the safety of the umbrella itself, surrounding personnel, and property, resolving a core safety hazard associated with the deployment of smart mobile devices in public areas.

[0017] 3. By combining four-wheel drive, tracking navigation and visual recognition, the umbrella can move and stop precisely along a predetermined path in a fixed scene (such as an outdoor seating area in a restaurant) and accurately identify the service target (whether there are guests), thus realizing practical application.

[0018] 4. The energy storage module provides a stable power supply for all electrical devices in the system. The energy storage battery stores surplus energy. The battery management unit has overcharge, over-discharge, overcurrent, and overheat protection functions, and works with the adaptive MPPT controller to achieve efficient power management. By setting up thin-film photovoltaic panels to connect to the energy storage battery through a solar interface, and the mains power system provides a mains power interface to connect to the energy storage battery, the two charging methods ensure that the energy storage battery can be charged even in rainy weather or other sunless weather, thereby powering various modules in the system and ensuring continuous power supply in cloudy, rainy, and low-light environments.

[0019] 5. This solution features an independent remote control module that wirelessly links with the central control module, eliminating the limitations of wired control and enabling long-distance, flexible remote manual control. This significantly improves ease of operation and adaptability to various usage scenarios. The umbrella can be independently driven by manual commands to perform all-dimensional actions such as opening and closing, horizontal movement, and angle adjustment. This allows the system to cope with extreme weather, equipment sensor malfunctions, and special usage requirements where automatic control cannot adapt, thereby enhancing the equipment's fault tolerance and emergency control capabilities. Attached Figure Description

[0020] Figure 1 This is a system structure block diagram of the present invention; Detailed Implementation The technical solutions of the embodiments of this specification will be explained and described below with reference to the accompanying drawings. However, the following embodiments are only preferred embodiments of this specification and not all of them. Other embodiments obtained by those skilled in the art based on the embodiments in the implementation methods without creative effort are all within the protection scope of this specification.

[0021] The terms "first," "second," "third," etc., in the description, claims, and accompanying drawings are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to such processes, methods, products, or apparatus.

[0022] In the following description, terms such as “inner,” “outer,” “upper,” “lower,” “left,” and “right” are used only to facilitate the description of the embodiments and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this specification.

[0023] All data involved in this application are information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of the relevant data comply with the relevant laws, regulations and standards of the relevant countries and regions.

[0024] Please see Figure 1 As shown, a photovoltaic smart umbrella control system includes: 1. Rainwater recognition module, used to sense rainfall and generate control commands.

[0025] The rain recognition module senses the environmental rainfall status and generates corresponding control commands. It employs a composite detection structure combining a raindrop sensor and an ambient humidity sensor. The rain recognition module uses a multi-sensor fusion decision algorithm to accurately identify three states: rainfall, light rain, and no rain. The rain recognition module transmits rainfall signals to the central control module in real time, serving as the core trigger condition for umbrella movement, opening and closing, and start / stop. It works in conjunction with the wind speed measurement module, four-wheel drive module, and opening / closing module to execute wind and rain coordinated control logic. The rain recognition module executes the following control logic: When a rain signal and a person are detected, control all umbrellas to move to the table and open them to block the rain. When someone is detected at the table, the umbrella is moved to the preset opening point and opens to block the rain. When both wind and rain signals are detected, the umbrella stops all movement. When a light signal and a person are detected, control all umbrellas to move to the table and open the umbrellas to provide shade.

[0026] In the above, the multi-sensor fusion decision algorithm of the rainwater recognition module is executed sequentially: (1) Collect the original signals of raindrops and humidity, and calculate the effective feature R of raindrops.

[0027] (2) Normalize the effective raindrop feature R and humidity H to obtain N r and N h ; Among them, , R max is the raindrop feature saturation value (hardware calibration constant) in heavy rain environment; N r ∈ [0, 1], the larger the value, the higher the rainfall probability.

[0028] , H min (lower limit in dry environment) = 40%; H max (saturated humidity upper limit) = 100%; N h ∈ [0, 1].[[]END]]

[0029] (3) Calculate the comprehensive confidence Score = w r N r + w h N h .

[0030] (4) Conduct preliminary classification judgment according to thresholds T1 and T2; among them, T1: the threshold for the boundary between no rain and light rain; T2: the threshold for the boundary between light rain and rainfall, satisfying 0 < T1 < T2 < 1. For example: T1 = 0.35, T2 = 0.65.

[0031] (5) Introduce hysteresis correction and continuous frame verification, and output stable no rain, light rain, and rainfall states; Among them, the hysteresis correction rule is: If the current is "no rain → light rain", it needs to satisfy Score ≥ T1 + ΔT; If the current is "light rain → no rain", it needs to satisfy Score < T1 - ΔT; If the current is "light rain → rainfall", it needs to satisfy Score ≥ T2 + ΔT; If the current is "rainfall → light rain", it needs to satisfy Score < T2 - ΔT; Hysteresis width: ΔT = 0.05 - 0.1; Final output stable state: State final = the rainfall state after hysteresis judgment.

[0032] Among them, the continuous frame verification rule is: To avoid misjudgment due to single interference, set that the state is updated only when k consecutive frames are consistent: ; Usually take k = 3 - 5.

[0033] (6) The final state is sent to the control unit for intelligent opening and closing decision of the umbrella.

[0034] II. Wind speed measurement module, used to monitor ambient wind force.

[0035] The wind speed measurement module is used to monitor the ambient wind force and wind speed changes in real time. It has a built-in wind speed sensing unit and a strong wind threshold judgment unit, and can preset a safe wind speed threshold value. It uses a wind speed change rate detection algorithm to monitor wind force. The module continuously outputs real-time wind speed data and strong wind alarm signals to the central control module. The central control module performs graded strong wind protection operations according to the current status of the umbrella (starting point, moving, opening, already opened) to ensure equipment and usage safety. The wind speed measurement module executes the following control logic: When the umbrella is at the starting point, a strong wind signal is detected, and there are people at the table, the umbrella must not be moved or opened. If a strong wind signal is detected during the parachute's movement, the parachute will be controlled to return to the starting point. If a strong wind signal is detected during the umbrella's opening process, the umbrella will close and return to the starting point. When a strong wind signal is detected while the umbrella is already open, the control system moves the umbrella to the opening point, closes the canopy, and then returns to the starting point.

[0036] In the above, the wind speed change rate detection algorithm is used to predict sudden strong wind changes in advance to avoid instantaneous damage to the umbrella. Its calculation formula is as follows: ; Where Δv t : Rate of change of wind speed (m / s²); Δt: Time interval (usually 1 second).

[0037] When Δv t If the threshold for sudden gust changes is >α, it is determined to be a sudden strong wind, which directly triggers a warning and allows for early intervention and protection.

[0038] 3. Distance detection module, used to detect obstacles on the travel path and trigger obstacle avoidance stop signal.

[0039] The distance detection module is used to detect obstacles in the parachute's path and trigger an obstacle avoidance stop signal. It adopts a composite ultrasonic and infrared detection structure and uses an infrared intensity mapping ranging algorithm. The effective detection distance is 0.5 meters to 15 meters, and the detection line of sight angle is 180°. It can identify fixed and moving objects such as pets, strollers, toddlers, tables and chairs, fences, water bottles, clothing, and bicycles. When an obstacle is detected, a high-priority obstacle avoidance signal is immediately output, forcing the parachute to stop and remain closed.

[0040] The infrared intensity mapping ranging algorithm described above is used for high-precision ranging at close ranges of 0.5m to 2m, compensating for the near-field blind zone of ultrasound. The calculation formula is as follows: ; Where P: current infrared AD sampling value; P0: Ambient light noise floor compensation value; K, b: Hardware calibration constants.

[0041] When 0.5m≤d i ≤2m: Effective close-range ranging; d i <0.5m: Extremely close to a dangerous obstacle; d i >2m: Infrared range is outside the effective range, and ultrasound will be used for judgment.

[0042] IV. Visual recognition module, used for wide-angle multi-class recognition to distinguish between moving and stationary items and to identify people at tables.

[0043] The visual recognition module is a wide-angle multi-class visual recognition unit installed on the umbrella pole. It has image acquisition, target recognition and classification functions. It can accurately distinguish between moving and fixed objects on the path, and at the same time identify whether there are people staying at the table, providing a basis for personnel status for rain shelter and wind protection. Multiple dedicated interfaces are set on the bottom of the umbrella pole for connection and communication with the tracking module. A coordinate fusion collaborative algorithm is used to realize the collaboration between vision and tracking positioning.

[0044] The coordinate fusion and collaborative algorithm for the visual recognition module and the line-following module mentioned above includes: First, perform pixel coordinate transformation: ; Among them, M trans Visual-tracking coordinate transformation matrix; (u corr v corr ): Corrected pixel coordinates.

[0045] Secondly, multi-source location-weighted fusion is performed: ; Among them, w v +w t =1; When there is a visual target w v =0.7, otherwise w t =1.

[0046] 5. The four-wheel drive module carries the umbrella and drives its movement.

[0047] The four-wheel drive module, serving as the parachute's movement execution unit, adopts a four-wheel synchronous drive structure and is equipped with a high-power drive motor, capable of stably supporting the entire weight of the parachute. The module receives commands from the central control module and executes actions such as forward movement, backward movement, turning, starting and stopping, and returning to the starting point. In conjunction with the tracking module, it achieves precise path walking and is the core power unit for the parachute's autonomous movement.

[0048] 6. The light-tracking moving module is located at the top of the umbrella and is used to sense light and adjust the orientation of the umbrella surface.

[0049] The tracking module is fixedly installed on the top of the umbrella and collects multi-directional light intensity signals in real time through a high-precision light sensor array. When the umbrella is open and there is no rain, it executes a light direction calculation algorithm and a PID closed-loop control algorithm for the steering axis to drive the steering axis module to adjust the umbrella's posture, ensuring that the umbrella surface is always facing the light direction and maximizing photovoltaic power generation efficiency. When it is raining, it automatically switches to personnel following logic through a dual-mode decision algorithm. Based on the personnel coordinates output by the vision module, it executes a position following and correction algorithm to control the umbrella's movement and keep it above the personnel, pausing the tracking action while ensuring rain protection. The entire algorithm achieves intelligent and seamless switching between tracking power generation and rain protection through mode hysteresis decision and motion constraints.

[0050] That is, the above-mentioned tracking light movement module executes the following control logic: After the umbrella opens, it is light-sensitive, and the movement of the umbrella is controlled to keep the umbrella surface facing the light. When a rainfall signal is detected, the control umbrella is kept above the personnel.

[0051] The above employs a light array direction calculation algorithm. Using a light sensor array distributed across the umbrella's top plane, the solar incidence direction is calculated based on the light intensity differences between each sensor. This calculation is used to control the umbrella's orientation towards sunlight, including: (1) Using light intensity as the weight, calculate the coordinates of the equivalent incident center of light: ; Among them, L i : Illumination intensity sampled value of sensor i in the illumination sensor array; N: Total number of umbrella top light sensors; (x i ,y i ): The coordinates of the i-th sensor in the umbrella top plane coordinate system.

[0052] (2) Calculate the horizontal azimuth angle of the illumination: ; Where (x0,y0) is the center of the umbrella top coordinate system.

[0053] θ az This refers to the target azimuth angle that the steering axis needs to be aligned with.

[0054] 7. Energy storage module, used to supply power to various electrical devices in the system.

[0055] The energy storage module provides a stable power supply for all electrical devices in the system, and the energy storage battery stores surplus energy to ensure continuous power supply in rainy or low-light environments. The battery management unit has overcharge, over-discharge, overcurrent, and overheat protection functions, and works with the adaptive MPPT controller to achieve efficient power management.

[0056] The energy storage module includes a charging unit, an energy storage battery, and a battery management unit. The charging unit includes a solar interface and an AC power interface. The charging unit is connected to the energy storage battery, meaning the thin-film photovoltaic panel is connected to the energy storage battery via the solar interface, and the AC power system provides an AC power interface for connection to the energy storage battery. The thin-film photovoltaic panel is laid on the umbrella surface. These two charging methods ensure that the energy storage battery can be charged even in rainy weather or other sunless conditions, thus providing power to various modules in the system. The battery management unit is connected to an adaptive MPPT controller, which dynamically adjusts the maximum power point of the photovoltaic panel based on light intensity, temperature, and humidity data collected by the environmental monitoring module using an optimization algorithm.

[0057] The adaptive MPPT controller employs an improved gray wolf optimization algorithm, which optimizes the search step size by introducing an environmental fitness function. This fitness function is defined as follows: F = η·Ppv - λ·(Tbattery - Topt)²; Where η is the photovoltaic conversion efficiency, Ppv is the real-time output power of the photovoltaic panel, Tbattery is the temperature of the energy storage box, Topt is the optimal operating temperature of the battery, and λ is the temperature penalty coefficient.

[0058] 8. The main control module is used to control the operation of each module in the system.

[0059] The central control module is the core control unit of the system, using a microcontroller (MCU) as the main control chip. It serves as the collaborative command center for all modules. The module receives sensor signals in real time from units such as rain detection, wind speed measurement, distance detection, visual recognition, and motion tracking. After processing these signals according to preset logic, it outputs execution commands to the four-wheel drive module, opening / closing module, and steering axle module, achieving automated and intelligent collaborative operation of the entire system. The central control module is configured to execute the following collaborative control logic: In response to the rainfall signal from the rain recognition module and the signal from the visual recognition module that someone is at the table, the four-wheel drive module is controlled to move along the path recognized by the tracking module to the umbrella opening point, and the opening and closing module is controlled to open the umbrella surface. In response to the strong wind signal from the wind speed measurement module, the corresponding operation is performed according to the different states of the umbrella: if it is at the starting point, movement and opening of the umbrella are prohibited; if it is in motion, it is controlled to return to the starting point; if it is in the process of opening the umbrella, it is controlled to close the umbrella surface and return; if the umbrella has already opened, it is controlled to move to the opening point, close the umbrella surface, and then return. In response to the obstacle avoidance stop signal from the distance detection module, the umbrella body is controlled to stop first and the umbrella surface is kept closed. In response to the light signal from the light-tracking moving module, the umbrella surface is controlled to rotate after it is opened to maintain its orientation towards the light.

[0060] 9. Tracking Module: This module identifies the ground route color, starting point, umbrella deployment point, and end point at the table edge. It avoids ground signal interference and provides precise path guidance for the four-wheel drive module. It works in conjunction with the main control module, four-wheel drive module, and vision recognition module, employing a combination of color recognition and photoelectric sensing. It accurately identifies the ground route color, starting point, umbrella deployment point, and end point at the table edge, and has ground interference shielding capabilities, providing precise path navigation for the four-wheel drive module and ensuring the umbrella moves to the target location along the preset route.

[0061] 10. Steering axis module, connected to the light-tracking moving module, receives commands from the main control module and executes the umbrella surface rotation action to achieve adjustment of the light-tracking and rain-blocking posture.

[0062] 12. Opening / Closing Module: Connected to the main control module, this module executes the opening and closing of the umbrella canopy and is the core actuator for providing sun and rain protection. It connects to the main control module, rain detection module, and wind speed measurement module, serving as the umbrella canopy opening and closing actuator. Equipped with a DC geared motor, it features opening, closing, and mid-operation stop functions. Responding to main control commands, it completes the actions of opening the umbrella for rain protection, closing it in strong winds, and closing it to avoid obstacles. It is the core actuator for providing sun and rain protection.

[0063] Thirteen, Remote Control Module: The remote control module establishes a wireless communication connection with the main control module. The remote control module has a built-in wireless transceiver unit, control button group, and power supply unit. The remote control module is configured with independent control logic, which can be independent of the environmental detection unit and automatic control strategy, receive manual operation commands independently, and send control signals to the main control unit to independently drive the umbrella to complete opening and closing actions, horizontal position movement, and angle adjustment actions, thereby realizing manual remote control of the photovoltaic smart umbrella.

[0064] Specific implementation steps of the remote control module: Step 1: The remote control module's built-in power supply unit provides continuous low-voltage power. After the system is powered on, the wireless transceiver unit completes frequency band matching and channel binding with the main control module; the control button group enters real-time sleep scanning state, and the whole machine is in low-power standby mode, waiting for manual operation commands.

[0065] Step 2: The operator presses the corresponding function button in the control button group (open umbrella, close umbrella, left / right horizontal movement, elevation angle adjustment, emergency stop, etc.); the remote control module chip captures the button level changes in real time, identifies the button type through the button scanning algorithm, generates a corresponding unique control command code, and adds a check code and device address code to complete the command encapsulation.

[0066] Step 3: The encapsulated control commands are wirelessly transmitted to the central control module via the wireless transceiver unit. During transmission, an encryption and verification mechanism is used to prevent data interference. If a single signal transmission fails, it will automatically retry 2-3 times to ensure that the commands are delivered stably.

[0067] Step 4: The central control module receives the wireless remote control signal and verifies the legality of the command address and check code. After the verification is successful, the control priority determination algorithm is immediately triggered, the data reception of the environmental detection unit is suspended, the original automatic control strategy is terminated, and the system is forcibly switched to manual remote control mode.

[0068] Step 5: The central control module parses the specific function instructions and independently sends drive signals to the corresponding actuators. Opening and closing commands: drive the opening and closing motor to rotate forward and backward to complete the unfolding / folding of the photovoltaic umbrella; Horizontal movement command: Drives the motor of the bottom walking mechanism to adjust the left and right, and forward and backward positions of the umbrella body; Angle adjustment command: Drive the pitch adjustment motor and the rotation motor to complete the adjustment of the umbrella canopy tilt angle and circumferential azimuth; Emergency stop command: Cut off all motor outputs and immediately lock all actions.

[0069] Step 6: During the motor's operation, the built-in limit sensor provides real-time feedback on the travel position. Upon reaching the limit position, the motor automatically cuts off power and stops to prevent damage to the mechanical structure due to overtravel. After a single remote control action is completed, the main control module remains locked in manual mode and can continuously receive the next remote control adjustment command.

[0070] Step 7: If the remote control module remains inactive for a preset duration (default 30s) without any button presses or new commands being issued, the main control module will detect that the remote control channel has no valid signal for an extended period. It will then automatically unlock the manual mode, reconnect to the environmental detection unit data, restart the automatic control algorithm, and return the control system to its intelligent autonomous operation state.

[0071] The signals from the rain recognition module, wind speed measurement module, and distance detection module work together; when rain and strong wind are detected simultaneously, the main control module controls the umbrella to stop moving; when rain is detected and the distance detection module identifies an obstacle on the path, the obstacle avoidance and stop logic is executed first.

[0072] The embodiments described above are merely preferred embodiments of this specification and are not intended to limit the scope of this specification. Any modifications and improvements made by those skilled in the art to the technical solutions of this specification without departing from the spirit of this specification should fall within the protection scope defined by the claims of this specification.

Claims

1. A photovoltaic intelligent umbrella control system, characterized in that, include: The rain detection module is used to sense rainfall and generate control commands; Wind speed measurement module, used to monitor ambient wind speed; The distance detection module is used to detect obstacles on the travel path and trigger an obstacle avoidance stop signal; The visual recognition module is used for wide-angle multi-class recognition to distinguish between moving and stationary objects and to identify people at tables. The four-wheel drive module carries the umbrella and drives its movement. A light-tracking moving module, located at the top of the umbrella, is used to sense light and adjust the orientation of the umbrella surface; Energy storage modules are used to supply power to various electrical devices in the system; The master control module is used to control the operation of all modules in the system.

2. The photovoltaic intelligent umbrella control system according to claim 1, characterized in that, The master control module is configured to execute the following collaborative control logic: In response to the rainfall signal from the rain recognition module and the signal from the visual recognition module that someone is at the table, the four-wheel drive module is controlled to move along the path recognized by the tracking module to the umbrella opening point, and the opening and closing module is controlled to open the umbrella surface. In response to the strong wind signal from the wind speed measurement module, the corresponding operation is performed according to the different states of the umbrella: if it is at the starting point, movement and opening of the umbrella are prohibited; if it is in motion, it is controlled to return to the starting point; if it is in the process of opening the umbrella, it is controlled to close the umbrella surface and return; if the umbrella has already opened, it is controlled to move to the opening point, close the umbrella surface, and then return. In response to the obstacle avoidance stop signal from the distance detection module, the umbrella body is controlled to stop first and the umbrella surface is kept closed. In response to the light signal from the light-tracking moving module, the umbrella surface is controlled to rotate after it is opened to maintain its orientation towards the light.

3. The photovoltaic intelligent umbrella control system according to claim 1, characterized in that, The rainwater recognition module executes the following control logic: When a rain signal and a person are detected, control all umbrellas to move to the table and open them to block the rain. When someone is detected at the table, the umbrella is moved to the preset opening point and opens to block the rain. When both wind and rain signals are detected, the umbrella stops all movement. When a light signal and a person are detected, control all umbrellas to move to the table and open the umbrellas to provide shade.

4. The photovoltaic intelligent umbrella control system according to claim 1, characterized in that, The wind speed measurement module executes the following control logic: When the umbrella is at the starting point, a strong wind signal is detected, and there are people at the table, the umbrella must not be moved or opened. If a strong wind signal is detected during the parachute's movement, the parachute will be controlled to return to the starting point. If a strong wind signal is detected during the umbrella's opening process, the umbrella will close and return to the starting point. When a strong wind signal is detected while the umbrella is already open, the control system moves the umbrella to the opening point, closes the canopy, and then returns to the starting point.

5. The photovoltaic intelligent umbrella control system according to claim 1, characterized in that, The tracking motion module executes the following control logic: After the umbrella opens, it is light-sensitive, and the movement of the umbrella is controlled to keep the umbrella surface facing the light. When a rainfall signal is detected, the control umbrella is kept above the personnel.

6. The photovoltaic intelligent umbrella control system according to claim 1, characterized in that, The energy storage module includes a charging unit, an energy storage battery, and a battery management unit; the charging unit includes a solar interface and an AC power interface; the charging unit is connected to the energy storage battery; the battery management unit is connected to an adaptive MPPT controller, which dynamically adjusts the maximum power point of the photovoltaic panel based on the light intensity, temperature, and humidity data collected by the environmental monitoring module through an optimization algorithm.

7. The photovoltaic intelligent umbrella control system according to claim 6, characterized in that, The adaptive MPPT controller employs an improved gray wolf optimization algorithm, which optimizes the search step size by introducing an environmental fitness function. This fitness function is defined as follows: F = η·Ppv - λ·(Tbattery - Topt)²; Where η is the photovoltaic conversion efficiency, Ppv is the real-time output power of the photovoltaic panel, Tbattery is the temperature of the energy storage box, Topt is the optimal operating temperature of the battery, and λ is the temperature penalty coefficient.

8. The photovoltaic intelligent umbrella control system according to claim 1, characterized in that, It also includes a tracking module and a steering axis module. The tracking module is used to identify the color of the ground route, the starting point, the umbrella opening point, and the end position at the edge of the table, which can avoid ground signal interference. The steering axis module is connected to the light-tracking moving module and is used to rotate the umbrella surface. The visual recognition module is set on the umbrella pole, and its bottom surface has multiple interfaces that connect to the tracking module.

9. The photovoltaic intelligent umbrella control system according to claim 1, characterized in that, It also includes a remote control module, which establishes a wireless communication connection with the main control module. The remote control module has a built-in wireless transceiver unit, a control button group and a power supply unit. The remote control module is equipped with independent control logic, enabling it to operate independently of the environmental detection unit and automatic control strategy. It can receive manual operation commands and send control signals to the main control unit, independently driving the umbrella to complete opening and closing actions, horizontal position movement, and angle adjustment actions, thus realizing manual remote control of the photovoltaic smart umbrella.

10. The photovoltaic intelligent umbrella control system according to claim 1, characterized in that, The signals from the rain recognition module, wind speed measurement module, and distance detection module work together; when rain and strong wind are detected simultaneously, the main control module controls the umbrella to stop moving; when rain is detected and the distance detection module identifies an obstacle on the path, the obstacle avoidance and stop logic is executed first.

Images