Roller blind greenhouse system and control method

Abstract

The present application relates to the technical field of agricultural machinery, and provides a curtain rolling greenhouse system and a control method. The curtain rolling greenhouse system comprises a greenhouse body, a curtain rolling assembly, a visual detection assembly and an execution assembly. The curtain rolling assembly comprises a curtain rolling device, a winding drum and a heat preservation curtain. The visual detection assembly comprises an image acquisition device, a first positioning mark, a first trajectory reference mark and a second trajectory reference mark. The first positioning mark is arranged on the curtain rolling device. The first trajectory reference mark and the second trajectory reference mark are symmetrically arranged on both sides of the length direction of the arch surface of the greenhouse body. The execution assembly is in communication connection with the image acquisition device and the curtain rolling device. The curtain rolling greenhouse system and the control method provided by the present application solve the defects of the prior art, such as the lack of real-time monitoring of the running track of the curtain rolling machine, the inability to automatically protect the running track after deviation, and the inability to remotely and visually control the running track. The present application realizes the automatic monitoring and deviation protection of the running track of the curtain rolling machine, and the remote real-time viewing of the on-site image and the wireless remote control of the equipment.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery technology, and in particular to a roll-up greenhouse system and control method. Background Technology

[0002] Currently, greenhouse curtain rolling machines typically employ a mechanical structure that reciprocates along the arched surface of the greenhouse. Their basic components include a drive motor, a rolling drum, an insulation curtain, and a manual or semi-automatic control box. There are two common operating methods: one relies on manual operation of switches to control the machine's start, stop, and forward / reverse rotation; the other uses a semi-automatic control box or centralized computer control, allowing operators to issue commands from near the control box or in a computer room. To prevent excessive movement, existing equipment is usually equipped with simple mechanical limit blocks or travel switches, and some machines also have a manual emergency stop switch.

[0003] However, existing rolling shutter machine control technology has the following drawbacks: First, due to factors such as unevenness of the greenhouse arch surface, mechanical wear, differences in curtain tension, or ground subsidence, the rolling shutter machine is prone to lateral deviation during operation. Once deviation occurs, existing equipment cannot automatically identify the anomaly and execute protective actions; operators still need to arrive on-site to observe before manually stopping the machine, which can easily lead to curtain damage, machine jamming, or even motor burnout. Furthermore, existing rolling shutter machine control systems all rely on manual on-site operation; operators must be physically present in the greenhouse to issue start and stop commands, making remote control impossible. Simultaneously, the on-site operating status and movement data cannot be transmitted back in real time, leaving operators unable to monitor equipment operation from remote locations, resulting in low management efficiency, particularly pronounced in scenarios involving simultaneous management of multiple greenhouses. Summary of the Invention

[0004] This invention provides a roller shutter greenhouse system and control method to solve the defects of existing technologies, such as lack of real-time monitoring of the roller shutter machine's walking trajectory, inability to automatically protect against deviation, and lack of remote visual control. It realizes automatic monitoring of the roller shutter machine's walking trajectory and automatic protection against deviation, as well as remote real-time viewing of on-site images and wireless remote control of the equipment.

[0005] This invention provides a roller shutter greenhouse system, comprising: The greenhouse itself; A roller blind assembly includes a roller blind device, a roller, and an insulation curtain. The roller blind device and the roller are both located on the greenhouse body and are configured to move along the arch surface of the greenhouse body. The output end of the roller blind device is connected to the roller, and one end of the insulation curtain is connected to the roller, so as to drive the insulation curtain to switch between a rolled-up state and an unfolded state under the driving action of the roller blind device. The visual inspection component includes an image acquisition device, a first positioning marker, a first trajectory reference marker, and a second trajectory reference marker. The first positioning marker is disposed on the roller shutter device, and the first trajectory reference marker and the second trajectory reference marker are symmetrically disposed on both sides of the arch surface of the greenhouse body along the length direction. The image acquisition device is used to acquire images of the first positioning marker, the first trajectory reference marker, and the second trajectory reference marker. An execution component is communicatively connected to both the image acquisition device and the roller shutter device, and is configured to determine, based on the image acquired by the image acquisition device, a first lateral offset of the first positioning marker relative to the first trajectory reference marker and a second lateral offset of the first positioning marker relative to the second trajectory reference marker, and to control the roller shutter device to stop operating when the absolute value of the difference between the first lateral offset and the second lateral offset is greater than a preset threshold.

[0006] According to the roller shutter greenhouse system provided by the present invention, both the first trajectory reference marker and the second trajectory reference marker are flexible marking strips, and the flexible marking strips are provided with scale markings or character markings. Alternatively, both the first trajectory reference marker and the second trajectory reference marker are rigid marker strips, and the rigid marker strips are provided with multiple position marking portions at intervals.

[0007] According to the roller shutter greenhouse system provided by the present invention, the roller shutter assembly further includes a fixed support rod and a follower support rod. The fixed support rod is disposed on one side of the greenhouse body along the width direction. The first end of the follower support rod is hinged to the fixed support rod, and the second end is connected to the roller shutter device. The image acquisition device and the execution component are both disposed on the fixed support rod.

[0008] According to the roller shutter greenhouse system provided by the present invention, the visual inspection component further includes a second positioning marker, which is disposed on the follow-up support rod.

[0009] According to the roller shutter greenhouse system provided by the present invention, the visual detection component includes a plurality of image acquisition devices, which are arranged at intervals along the walking trajectory of the roller shutter device, for segmented acquisition of images of the positioning marker, the first trajectory reference marker and the second trajectory reference marker.

[0010] The roller shutter greenhouse system provided by the present invention further includes: An alarm device is communicatively connected to the execution component, and the alarm device is configured to issue an alarm signal under the control of the execution component when the absolute value of the difference between the first lateral offset and the second lateral offset is greater than a preset threshold.

[0011] The roller shutter greenhouse system provided by the present invention further includes: A sensing component, which is communicatively connected to the execution component, is used to detect environmental physical parameters inside and / or outside the greenhouse, including light intensity and / or temperature.

[0012] According to the roller shutter greenhouse system provided by the present invention, the sensing component includes a light intensity sensor and a temperature sensor. The light intensity sensor is used to detect the light intensity outside the greenhouse body, and the temperature sensor is used to detect the temperature inside and / or outside the greenhouse body.

[0013] The roller shutter greenhouse system provided by the present invention further includes: The control terminal is wirelessly connected to the execution component. The control terminal has a display screen and an input module for receiving and displaying images acquired by the image acquisition device and the operating status information of the roller shutter device, and sending control commands to the execution component.

[0014] Another aspect of the present invention provides a control method based on a roller shutter greenhouse system, comprising: Acquire image information of the first positioning marker, the first trajectory reference marker, and the second trajectory reference marker; Based on the image information of the first positioning marker, the first trajectory reference marker, and the second trajectory reference marker, a first lateral offset of the first positioning marker relative to the first trajectory reference marker and a second lateral offset of the first positioning marker relative to the second trajectory reference marker are determined. The roller shutter device is controlled to stop operating when the absolute value of the difference between the first lateral offset and the second lateral offset is greater than a preset threshold.

[0015] The roller shutter greenhouse system provided by this invention, by setting up a visual detection component (including an image acquisition device, a first positioning marker, a first trajectory reference marker, and a second trajectory reference marker) and an execution component, uses the image acquisition device to acquire images of the positioning marker and the trajectory reference markers on the left and right sides in real time, and the execution component determines the two lateral offsets of the positioning marker relative to the two side markers. When the absolute value of the difference between the two lateral offsets is greater than a preset threshold, the roller shutter device is automatically controlled to stop running. This can realize real-time and automatic identification and shutdown protection of the roller shutter machine's deviation, without the need for manual on-site observation and operation, and avoids the failure to deal with deviation in time, resulting in greenhouse curtain damage, roller shutter machine jamming, or motor burnout. It solves the defects of the prior art that the roller shutter machine cannot be automatically identified and protected after deviation, relies on manual on-site shutdown, and is prone to equipment damage. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the roller shutter greenhouse system provided in an embodiment of the present invention.

[0018] Figure 2 This is a schematic diagram of the near-field control of the roller shutter greenhouse system provided in an embodiment of the present invention.

[0019] Figure 3 This is a schematic diagram of the far-field control of the roller shutter greenhouse system provided in an embodiment of the present invention.

[0020] Figure 4 This is a communication diagram of the control terminal in the roller shutter greenhouse system provided in an embodiment of the present invention.

[0021] Figure 5 This is a flowchart illustrating the control method for the roller shutter greenhouse system provided in an embodiment of the present invention.

[0022] Figure label: 100. Greenhouse body; 200. Roller blind assembly; 210. Roller blind device; 220. Roller drum; 230. Insulation curtain; 240. Motor; 250. Fixed support rod; 260. Follow-up support rod; 300. Visual inspection assembly; 310. Image acquisition device; 320. First positioning marker; 330. First trajectory reference marker; 340. Second trajectory reference marker; 400. Execution assembly; 500. Alarm device; 600. Sensing assembly; 610. Light intensity sensor; 620. Temperature sensor; 700. Control terminal. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0024] The following is combined Figures 1 to 5 This invention describes the roller shutter greenhouse system and control method provided by the present invention.

[0025] See Figures 1 to 3 As shown, the roller shutter greenhouse system provided in this embodiment of the invention includes: greenhouse body 100, roller shutter assembly 200, vision detection assembly 300, and execution assembly 400.

[0026] The roller blind assembly 200 includes a roller blind device 210, a roller 220, and an insulation curtain 230. Both the roller blind device 210 and the roller 220 are located on the greenhouse body 100 and configured to move along the arched surface of the greenhouse body 100. The output end of the roller blind device 210 is connected to the roller 220. One end of the insulation curtain 230 is connected to the roller 220, and the other end is connected to the greenhouse body 100, so that the insulation curtain 230 can switch between a rolled-up state and an unfolded state under the driving action of the roller blind device 210. The visual detection assembly 300 includes an image acquisition device 310, a first positioning marker 320, a first trajectory reference marker 330, and a second trajectory reference marker 340. The first positioning marker 320 is located on the roller blind device 210, the first trajectory reference marker 330 and the second trajectory reference marker 340. Two trajectory reference markers 340 are symmetrically arranged on both sides of the arch surface of the greenhouse body 100 along the length direction. The image acquisition device 310 is used to acquire images of the first positioning marker 320, the first trajectory reference marker 330, and the second trajectory reference marker 340. The execution component 400 is communicatively connected to both the image acquisition device 310 and the roller shutter device 210, and is configured to determine the first lateral offset of the first positioning marker 320 relative to the first trajectory reference marker 330 and the second lateral offset of the first positioning marker 320 relative to the second trajectory reference marker 340 based on the images acquired by the image acquisition device 310. When the absolute value of the difference between the first lateral offset and the second lateral offset is greater than a preset threshold, the roller shutter device 210 is controlled to stop operating.

[0027] The roller shutter greenhouse system provided by this invention, by setting up a visual detection component 300 (including an image acquisition device 310, a first positioning marker 320, a first trajectory reference marker 330, and a second trajectory reference marker 340) and an execution component 400, uses the image acquisition device 310 to acquire images of the positioning marker and the trajectory reference markers on the left and right sides in real time, and the execution component 400 determines the two lateral offsets of the positioning marker relative to the two side markers. When the absolute value of the difference between the two lateral offsets is greater than a preset threshold, the roller shutter device 210 is automatically controlled to stop running. This can realize real-time and automatic identification and shutdown protection of the roller shutter machine's deviation, without the need for manual on-site observation and operation, and avoids the failure to deal with deviation in time, resulting in greenhouse curtain damage, roller shutter machine jamming, or motor burnout. It solves the defects of the prior art that the roller shutter machine cannot be automatically identified and protected after deviation, relies on manual on-site shutdown, and is prone to equipment damage.

[0028] Specifically, the greenhouse body 100 is the main supporting structure of the vegetable greenhouse, and its top forms an arched surface with a certain curvature. This arched surface is used to support the heat preservation curtain 230 and provide a walking path for the roller shutter device 210.

[0029] The roller shutter assembly 200 is used to perform the rolling and laying operations of the insulation curtain 230, so that the insulation curtain 230 is rolled up when the greenhouse needs to be lit and unfolded to cover the greenhouse surface when insulation is needed. The roller shutter device 210 is fixedly installed at one end of the roller drum 220 and can reciprocate along the arch surface of the greenhouse. Its output end is connected to the roller drum 220 for transmission. The roller drum 220 is arranged along the length of the greenhouse, and one edge of the insulation curtain 230 is fixedly connected to the surface of the roller drum 220. When the roller shutter device 210 rotates forward, the roller 220 rotates accordingly, gradually winding the insulation curtain 230 onto the roller 220, thus switching the insulation curtain 230 from an unfolded state covering the greenhouse surface to a rolled-up state retracted at the top of the greenhouse. When the roller shutter device 210 rotates in the reverse direction, the roller 220 rotates in the opposite direction, gradually releasing the insulation curtain 230, allowing the insulation curtain 230 to slide down the arch surface and unfold under its own weight and the traction of the roller shutter device 210, restoring it to its state of covering the greenhouse surface. Through the forward and reverse rotation control of the roller shutter device 210, the roller shutter assembly 200 can realize the automated opening and closing operation of the insulation curtain 230, eliminating the need for manual climbing and pulling.

[0030] In some embodiments, the roller blind assembly 200 further includes a motor 240, which serves as the driving power source for the roller blind device 210 and is connected to the roller drum 220. A contactor or relay switch is connected in series in the power supply circuit of the motor 240. The motor 240 control module is located in a control box. Its input terminal is electrically connected to the MCU (Microcontroller Unit) / SoC (System On Chip), and its output terminal is electrically connected to the power supply control terminal of the motor 240 (e.g., the coil circuit of the contactor or the control terminal of the relay). When the MCU / SoC determines that the roller blind device 210 needs to be stopped, it outputs a stop signal to the motor 240 control module, which then cuts off the power supply to the motor 240, causing the motor 240 to stop and remain in a braking state. When the MCU / SoC receives a start or forward / reverse command, the motor 240 control module connects the power supply circuit of the motor 240 according to the command and switches the current direction, driving the motor 240 to rotate forward or in reverse.

[0031] The visual detection component 300 is used to collect image information of the roller shutter device 210 in real time during its movement, and to provide visual data for determining whether the roller shutter device 210 has deviated from its course. The first trajectory reference marker 330 and the second trajectory reference marker 340 are symmetrically arranged on the surface of the greenhouse film on the arched surface of the greenhouse body 100. They extend parallel to the left and right sides of the preset walking trajectory of the roller shutter device 210, forming two fixed reference marking lines. The first positioning marker 320 is fixed to the roller shutter device 210 body. Its shape, color, or pattern forms a clear visual contrast with the greenhouse film and the trajectory reference marker, and it can be clearly positioned in the image. The image acquisition device 310 faces the walking area of ​​the roller shutter device 210, and its viewing angle covers the area corresponding to the first positioning marker 320, the first trajectory reference marker 330, and the second trajectory reference marker 340. It is used to collect the relative position images of the three in the same frame in real time, and transmit the collected image data to the execution component 400. The image acquisition device 310 can continuously acquire images at set time intervals, or it can acquire video streams in real time to ensure continuous monitoring of the movement trajectory of the roller shutter device 210. With the cooperation of the above components, the visual detection component 300 can obtain the real-time positional relationship of the roller shutter device 210 relative to the two left and right reference marks in a non-contact and visual manner during its movement, providing accurate and intuitive image basis for subsequent deviation judgment.

[0032] In the visual inspection component 300, there is at least one image acquisition device 310, which can be reasonably configured according to the length of the greenhouse and the viewing angle range of the image acquisition device 310. For example, when the greenhouse is short or the image acquisition device 310 uses a wide-angle lens, only one image acquisition device 310 can be set up and installed in a position that can cover the entire walking area of ​​the roller shutter device 210, so that the lens viewing angle simultaneously covers all or most of the travel range of the first positioning marker 320, the first trajectory reference marker 330, and the second trajectory reference marker 340. When the greenhouse is long or the viewing angle of a single image acquisition device 310 cannot cover the entire walking trajectory, multiple image acquisition devices 310 can be set up at intervals along the walking trajectory of the roller shutter device 210. Each image acquisition device 310 is responsible for acquiring images of the corresponding section, so that the viewing angles of multiple image acquisition devices 310 are connected sequentially or partially overlapped, thereby achieving blind-spot-free coverage of the entire travel range of the roller shutter device 210.

[0033] Understandably, regardless of whether one or multiple image acquisition devices 310 are used, each image acquisition device 310 is communicatively connected to the execution component 400. The execution component 400 can receive and process the images acquired by each image acquisition device 310, ensuring that the system can acquire valid images including positioning markers and left and right trajectory reference markers whenever the roller shutter device 210 moves to any position, thereby continuously and accurately monitoring the deviation status. By flexibly configuring the number and installation position of the image acquisition devices 310, it is possible to adapt to the needs of greenhouses of different lengths and structures, ensuring the reliability and integrity of visual inspection.

[0034] The execution component 400 is used to receive and process the image information collected by the vision detection component 300, determine whether the roller shutter device 210 has deviated based on the image processing results, and automatically control the roller shutter device 210 to stop running when the deviation exceeds the allowable range.

[0035] In some embodiments, the execution component 400 includes a control box and an MCU / SoC, an image interface, and a motor 240 control module disposed in the control box. The control box is fixedly installed on the fixed support rod 250 of the greenhouse body 100 and adopts a sealed and waterproof structure. The MCU / SoC, as the core computing unit, communicates with the image acquisition device 310 through the image interface and receives image data transmitted in real time by the image acquisition device 310.

[0036] In some embodiments, the control box is further provided with a wireless communication module, which is electrically connected to the MCU / SoC and used to establish a wireless communication connection with the remote control terminal 700. Specifically, the wireless communication module can be at least one of Bluetooth, WiFi, 4G, or 5G modules. For near-field communication, it communicates directly with the remote control terminal 700 via Bluetooth or WiFi. For far-field communication, it accesses the mobile communication network via a 4G or 5G module and interacts with the remote control terminal 700 or a cloud server. The MCU / SoC receives control commands (including start, stop, forward rotation, reverse rotation, etc.) issued by the remote control terminal 700 through the wireless communication module, and controls the motor 240 control module to drive the roller shutter device 210 to perform corresponding actions according to the commands. At the same time, the MCU / SoC transmits the operating status information of the roller shutter device 210 (including walking direction, current position, whether deviation has occurred, etc.) and the on-site images or video data collected by the image acquisition device 310 back to the remote control terminal 700 in real time through the wireless communication module. With the above configuration, the wireless communication module serves as a hardware bridge for data transmission between the execution component 400 and the remote control terminal 700, enabling remote monitoring and two-way communication of the roller shutter greenhouse system. This allows operators to obtain information about the equipment's operating status and issue control commands without having to enter the greenhouse site.

[0037] The MCU / SoC runs an image recognition processing program that performs preprocessing, feature extraction, and target localization on the received image in sequence. For example, the image can be preprocessed by grayscale conversion, binarization, and filtering and denoising. Then, the pixel coordinates of the first positioning marker 320, the first trajectory reference marker 330, and the second trajectory reference marker 340 in the image are extracted by color segmentation or edge detection algorithms. The first lateral offset of the first positioning marker 320 relative to the first trajectory reference marker 330 and the second lateral offset of the first positioning marker 320 relative to the second trajectory reference marker 340 are calculated respectively.

[0038] In other embodiments, the processor module of the execution component 400 may also employ a processor chip with an integrated neural network processing unit (NPU) or a system-on-chip (SoC) architecture, deploying a lightweight deep learning inference model to perform the aforementioned image recognition task. Specifically, the processor module may run a target detection algorithm based on a deep convolutional neural network (e.g., a lightweight YOLO series model, MobileNet-SSD, etc.) to directly detect and accurately locate the first positioning marker 320, the first trajectory reference marker 330, and the second trajectory reference marker 340 in the input image, and output the bounding box coordinates of each target; or run a key point detection model to perform sub-pixel precision positioning of the center point of the first positioning marker 320 and the inner edge lines of the two trajectory reference markers, thereby improving the measurement accuracy of the lateral offset. When the trajectory reference markers are provided with scale markings, the processor module may also run an optical character recognition (OCR) model to directly recognize the numbers or symbols of the scale markings in the image, realizing automatic reading of the walking position of the roller shutter device 210 without the need to pre-calibrate the conversion coefficient between pixel distance and actual distance. Compared to traditional image processing algorithms, deep learning-based image recognition methods are more robust to interference factors such as changes in lighting, lens damage, partial target occlusion, and background complexity, making them suitable for long-term stable operation in outdoor agricultural environments. The processor module can take the form of: an MCU (microcontroller), a combination of MCU and NPU, or a SoC chip integrating a CPU and NPU. Operators can flexibly choose based on system cost, computing power requirements, and power consumption requirements.

[0039] The specific calculation method for the two lateral offsets is as follows: In the image coordinate system, determine the position coordinates of the inner edge line of the first trajectory reference marker 330 and the inner edge line of the second trajectory reference marker 340, then determine the position coordinates of the center point or preset feature point of the first positioning marker 320, calculate the lateral pixel distance between the center point and the two inner edge lines respectively, and convert the pixel distance into the actual lateral offset according to the pre-calibrated conversion relationship between pixel distance and actual distance.

[0040] After obtaining the first and second lateral offsets, the MCU / SoC calculates the absolute value of the difference between them and compares it with a preset threshold. The preset threshold is an allowable deviation range value pre-stored in the MCU / SoC, which can be set according to the width of the greenhouse arch, the allowable swing amplitude of the roller shutter device 210 during normal movement, and the safety coverage requirements of the insulation curtain 230, for example, set to 3 cm or 5 cm. When the absolute value of the difference between the first and second lateral offsets is less than or equal to the preset threshold, the MCU / SoC determines that the roller shutter device 210 is in normal movement and does not perform a stop operation; the roller shutter device 210 continues to operate according to the current instruction. When the absolute value is greater than the preset threshold, the MCU / SoC determines that the roller shutter device 210 has deviated beyond the allowable range and immediately cuts off the power supply to the drive motor 240 of the roller shutter device 210 through the motor 240 control module, causing the roller shutter device 210 to stop moving urgently.

[0041] This invention uses the absolute value of the difference between the lateral offsets on both sides for judgment: First, it can automatically eliminate systematic errors introduced by the installation angle deviation of the image acquisition device 310, lens distortion, or the initial position offset of the roller blind device 210 in the lateral direction of the arch, thus improving the accuracy of judgment; Second, it makes the physical meaning of the preset threshold more intuitive, directly corresponding to the actual displacement of the roller blind device 210 from the center line of the two reference marks, which is convenient for reasonable configuration based on the safety coverage margin of the on-site insulation curtain 230; Third, within the field of view coverage of the image acquisition device 310, the distance between the inner edges of the two reference marks is known and fixed, and the sum of the two offsets is always equal to this distance. Therefore, the difference directly and linearly reflects the degree of deviation, and the algorithm is simple and has a fast response.

[0042] In some embodiments, the audible and visual alarm device 500 can also be triggered as needed to alert on-site personnel. The execution component 400 is also wirelessly connected to the remote control terminal 700, and can send the operating status information of the roller shutter device 210 (including walking direction, current position, whether deviation has occurred, etc.) to the remote terminal in real time for the operator to view, and can receive control commands (such as start, stop, forward rotation, reverse rotation, etc.) issued by the operator from the remote terminal, and control the motor 240 control module to perform corresponding actions according to the commands.

[0043] See Figure 1 As shown, according to some embodiments of the present invention, the first trajectory reference marker 330 and the second trajectory reference marker 340 are both flexible marking strips, and the flexible marking strips are provided with scale markings or character markings.

[0044] By setting both the first trajectory reference marker 330 and the second trajectory reference marker 340 as flexible marking strips with scale markings or character markings, clear and durable trajectory reference markings can be achieved without damaging the greenhouse film, and an intuitive scale reference can be provided for the position measurement of the roller shutter device 210.

[0045] Specifically, flexible marking strips can be made of waterproof fabric, reflective strips, or plastic film strips with high-contrast colors. They are fixed to the outer surface of the greenhouse film by pasting or binding, naturally conforming to the curvature of the greenhouse film's arch, preventing lifting or detachment due to unevenness of the greenhouse surface. This also avoids puncture or cutting damage to the film, ensuring its integrity. Gradient markings are printed or sprayed at equal intervals along the length of the flexible marking strip, such as a graduation number or segmented color block every 10 or 20 centimeters. These graduation markings or characters also use high-contrast colors for easy image recognition. When the roller shutter device 210 moves, the image acquisition device 310 captures images containing the scale mark or character mark. The execution component 400 reads the scale value corresponding to the positioning mark through image recognition, and can know the specific position of the roller shutter device 210 on the greenhouse arch surface in real time. Combined with the deviation judgment function, the system can not only monitor whether the deviation occurs, but also determine the location area where the deviation occurs. This provides location information for operators to troubleshoot and maintain the equipment, and also provides a data foundation for realizing automatic control based on location information (such as automatically stopping when reaching a predetermined position).

[0046] Furthermore, the graduated markings on the flexible marking strips offer the advantage of convenient installation and calibration: during initial installation, simply stretch and fix the two marking strips symmetrically to both sides of the preset walking trajectory, ensuring they are parallel and their graduations correspond, thus completing the calibration without the need for complex measuring equipment. Through this structure, the flexible marking strips with graduated or character markings achieve the dual functions of trajectory reference marking and walking position measurement in a simple and low-cost manner, further enhancing the intelligence and practicality of the roller shutter greenhouse system.

[0047] In some embodiments, the first and second trajectory references can also be formed by spraying, without the need to set up physical markers.

[0048] See Figure 1 As shown, according to some embodiments of the present invention, the first trajectory reference marker 330 and the second trajectory reference marker 340 are both rigid marker strips, and a plurality of position marking portions are provided at intervals on the rigid marker strips.

[0049] By setting the first trajectory reference marker 330 and the second trajectory reference marker 340 as rigid marking strips and setting multiple position marking parts at intervals on them, a stable and non-deformable trajectory reference can be provided when the greenhouse arch structure is relatively regular or higher positioning accuracy is required.

[0050] Specifically, the rigid marking strip can be made of plastic strip, aluminum alloy strip or composite material strip, which has good bending rigidity and dimensional stability. It is fixed to the support frame of the arch surface of the greenhouse body 100 by means of buckles, clamps or adhesives. It does not rely on the greenhouse film for load-bearing. Therefore, even in the case of strong winds or loose greenhouse film, the rigid marking strip can still remain straight and will not bend or deform. This ensures that the parallelism and spacing between the two reference marking lines on the left and right are constant, providing the image acquisition device 310 with a long-term stable reference system that is not affected by environmental factors.

[0051] Multiple position markers are spaced along the length of the rigid marking strip. These position markers can be raised scale blocks, recessed positioning grooves, reflective patches, or segmented marker blocks of different colors. The distance between adjacent position markers can be set according to the positioning accuracy requirements, for example, a position marker with a unique number can be set every 10 cm or 20 cm. When the roller shutter device 210 moves, the image acquisition device 310 captures images containing the position markers. The execution component 400 reads the position marker number or sequence corresponding to the positioning marker through image recognition, and can quickly determine the approximate section where the roller shutter device 210 is currently located. By combining the calculation of the lateral offset of the positioning marker relative to the two rigid marking strips in continuous images, it is possible to simultaneously realize deviation monitoring and walking position section identification.

[0052] Because rigid marker strips are not easily deformed, the consistency between the theoretical and actual coordinates of the position marking part in the image is better. This reduces the calibration frequency of the image recognition algorithm and its sensitivity to changes in ambient light, thereby improving the reliability and long-term operational stability of the system in complex outdoor environments.

[0053] In some embodiments, the real-time position of the roller shutter device 210 can be accurately measured according to the longitudinal scale at which the first positioning marker 320 is located, and then fed back to the terminal.

[0054] See Figure 1 As shown, according to some embodiments of the present invention, the roller blind assembly 200 further includes a fixed support rod 250 and a follower support rod 260. The fixed support rod 250 is disposed on one side of the greenhouse body 100 along the width direction. The first end of the follower support rod 260 is hinged to the fixed support rod 250, and the second end is connected to the roller blind device 210. The image acquisition device 310 and the execution component 400 are both disposed on the fixed support rod 250.

[0055] By placing the fixed support rod 250 on one side of the greenhouse body 100 along its width, and hinged to the fixed support rod 250 and connected to the roller shutter device 210, and by placing both the image acquisition device 310 and the execution component 400 on the fixed support rod 250, the system structure becomes more compact and installation and maintenance more convenient. The fixed support rod 250 does not need to move with the roller shutter device 210, simplifying the power supply and signal line layout and avoiding cable tangling and wear. The execution component 400 is also fixed to the fixed support rod 250, positioned for easy operation and maintenance, and connected to the image acquisition device 310 via fixed wiring to ensure reliable data transmission. The movable support rod 260 swings around the hinge point as the roller shutter device 210 moves, providing support and guidance for the roller shutter device 210. Since neither the image acquisition device 310 nor the execution component 400 moves with the roller shutter device 210, the image acquisition device 310 can continuously acquire images from a fixed perspective, and the execution component 400 does not need to be dynamically calibrated for different walking positions, thereby improving the system's installation convenience and operational reliability.

[0056] According to some embodiments of the present invention, the visual inspection component 300 further includes a second positioning marker 350, which is disposed on the follower support rod 260.

[0057] By further setting a second positioning marker 350 on the follow-up support rod 260, more reference points can be provided for deviation judgment during the movement of the roller shutter device 210, thereby improving the redundancy and reliability of monitoring.

[0058] The follow-up support rod 260 is connected to and moves with the roller shutter device 210, but the two have a fixed relative position in space. When the roller shutter device 210 twists or tilts due to uneven force, the relative positions of the first positioning marker 320 and the second positioning marker 350 in the image will also change accordingly. After receiving the image captured by the image acquisition device 310, the execution component 400 can simultaneously identify the lateral offset of the first positioning marker 320 and the second positioning marker 350 relative to the first trajectory reference marker 330 and the second trajectory reference marker 340, and cross-verify the offset data of the two positioning markers. When the deviation status reflected by the two positioning markers is consistent, the system can confirm the accuracy of the deviation judgment and execute the corresponding shutdown protection; when one of the positioning markers fails to be identified due to obstruction, dirt, or reflection, the system can still continue to perform deviation monitoring based on the image data of the other positioning marker, and will not lose the protection function due to the failure of a single marker.

[0059] Furthermore, by analyzing the relative displacement between the two positioning markers, the system can also determine whether the roller shutter device 210 has undergone abnormal torsion relative to the follow-up support rod 260, providing additional information for equipment fault diagnosis. In other words, by adding a second positioning marker 350, the system can improve the fault tolerance and environmental adaptability of visual inspection without changing the original core judgment logic.

[0060] In some embodiments, different colors or shapes can be set on the first positioning marker 320 and the second positioning marker 350, and the execution component 400 can simultaneously track the difference in motion trajectory of the two markers in multiple consecutive frames of images. By comparing the rate of change of the lateral offset of the first positioning marker 320 and the second positioning marker 350 and the angle between their offset directions, when the offset change trends of the two markers are inconsistent and the absolute value of the difference in their offsets is greater than a preset torsion threshold, the execution component 400 determines that the roller shutter device 210 has undergone abnormal torsion relative to the follow-up support rod 260. At this time, the system can output corresponding torsion alarm information or execute protective actions, realizing real-time monitoring of the mechanical connection status of the roller shutter device 210 and further enriching the fault diagnosis function of the visual inspection component 300.

[0061] According to some embodiments of the present invention, the visual inspection component 300 includes a plurality of image acquisition devices 310, which are arranged at intervals along the walking trajectory of the roller shutter device 210, for segmented acquisition of images of the positioning marker, the first trajectory reference marker 330 and the second trajectory reference marker 340.

[0062] By arranging multiple image acquisition devices 310 at intervals along the walking trajectory of the roller shutter device 210, blind-spot-free segmented monitoring of the walking process of the roller shutter device 210 can be achieved when the greenhouse is long or the field of view of a single image acquisition device 310 cannot cover the entire journey.

[0063] In some embodiments, each image acquisition device 310 can be installed on a fixed support rod 250 of a corresponding section, with the lens angle adjusted to cover the walking trajectory and the trajectory reference markers on both sides within its section. The viewing angles of adjacent image acquisition devices 310 have a partially overlapping area at the junction to ensure that there are no monitoring gaps when the roller shutter device 210 moves from one section to the next. The execution component 400 is communicatively connected to each image acquisition device 310 and selects the corresponding image acquisition device 310 as the current data source based on the real-time walking position of the roller shutter device 210, or simultaneously performs fusion processing on the images acquired by multiple image acquisition devices 310. Since each image acquisition device 310 only needs to cover a short length range, a higher resolution and lower distortion lens configuration can be used, thereby obtaining clearer images of the positioning markers and markers in the local area, improving the measurement accuracy of deviation judgment. In addition, when one image acquisition device 310 fails or its lens is blocked, the remaining image acquisition devices 310 can still continue to work, and the system will not completely lose its deviation monitoring capability due to the failure of a single camera, thereby improving the redundancy and reliability of the overall system. By using the above-mentioned multi-camera segmented arrangement, the system can achieve full coverage monitoring of the walking trajectory of long roller shutter sheds while ensuring monitoring accuracy.

[0064] See Figure 1 As shown, according to some embodiments of the present invention, the roller shutter greenhouse system further includes: an alarm device 500, which is communicatively connected to the execution component 400, and the alarm device 500 is configured to issue an alarm signal under the control of the execution component 400 when the absolute value of the difference between the first lateral offset and the second lateral offset is greater than a preset threshold.

[0065] By setting up an alarm device 500 that is communicatively connected to the execution component 400, and controlling the execution component 400 to issue an alarm signal when the absolute value of the difference between the first lateral offset and the second lateral offset is greater than a preset threshold, an immediate warning can be issued when the roller shutter device 210 deviates from its intended path, facilitating timely manual intervention or troubleshooting measures.

[0066] In some embodiments, the alarm device 500 can be an audible and visual alarm, fixedly installed on the outer wall of the control box or on the greenhouse support rod, or in a location easily observed and heard. It contains a sound-emitting element and a light-emitting element, electrically connected to the alarm drive circuit of the execution component 400. When the execution component 400 determines that the absolute value of the difference between the first lateral offset and the second lateral offset is greater than a preset threshold, the execution component 400 cuts off the power to the drive motor 240 of the roller shutter device 210 and simultaneously outputs a trigger signal to the alarm device 500. The alarm device 500 then emits a high-volume buzzer and flashing warning light. On-site operators or remote monitoring personnel can quickly perceive the occurrence of the deviation abnormality through the audible and visual signals and go to check and handle it, avoiding delays in troubleshooting due to failure to detect the deviation in time.

[0067] Simultaneously, the alarm signal also alerts the operator that the system has automatically implemented shutdown protection, eliminating the need for manual emergency stop button operation and reducing the operator's reaction burden in emergency situations. Furthermore, the alarm device 500 can be linked with the wireless communication module of the actuator 400, simultaneously issuing a local audible and visual alarm and pushing alarm information to a remote terminal, achieving dual on-site and remote alerts.

[0068] In some embodiments, the execution component 400 can also maintain a real-time data connection with the remote control terminal 700 via a wireless communication module and is configured with an active alarm information push function.

[0069] Specifically, when the MCU / SoC determines that the absolute value of the difference between the first and second lateral offsets is greater than a preset threshold, triggering the misalignment stop protection, the MCU / SoC automatically generates alarm information including the misalignment occurrence time, misalignment offset value, current position of the roller shutter device 210, and stop status while cutting off the power to the motor 240. This alarm information is then pushed in real-time to the display screen or control software interface of the remote control terminal 700 via the wireless communication module. The push can be implemented through message notification pop-ups, status bar reminders, or voice broadcasts, ensuring that operators receive timely misalignment alerts even without actively opening the control software. Furthermore, when the system self-test detects hardware faults or other abnormal states, the execution component 400 also uses the aforementioned push mechanism to synchronously send fault information to the remote control terminal 700.

[0070] See Figure 1 and Figure 4 As shown, according to some embodiments of the present invention, the roller shutter greenhouse system further includes: a sensing component 600, which is communicatively connected to the execution component 400, for detecting environmental physical parameters inside and / or outside the greenhouse body 100, including light intensity and / or temperature.

[0071] By setting up a sensing component 600 that is communicatively connected to the execution component 400 to detect the light intensity and / or temperature inside and / or outside the greenhouse body 100, the roller shutter greenhouse system can automatically perform the operation of raising and lowering the heat preservation curtain 230 according to the environmental physical parameters, thereby realizing unattended automated management.

[0072] In some embodiments, the sensing component 600 includes at least one light intensity sensor 610 and at least one temperature sensor 620, which are respectively fixedly installed inside and / or at suitable external locations within the greenhouse body 100. The light intensity sensor 610 collects the light intensity signal inside the greenhouse in real time, and the temperature sensor 620 collects the air temperature signal inside the greenhouse in real time. Both sensors transmit the collected electrical signals to the execution component 400. The execution component 400 has preset control logic corresponding to the light intensity and temperature. For example, when the light intensity is higher than a preset light threshold, the execution component 400 determines that light and cooling are needed and controls the roller shutter device 210 to reverse and drive the roller 220 to release the heat insulation curtain 230 to the unfolded state to cover the greenhouse surface. When the light intensity is lower than a preset light threshold and the temperature is lower than a preset temperature threshold, the execution component 400 determines that heat preservation is needed and similarly controls the heat insulation curtain 230 to unfold. Conversely, when the light is sufficient and the temperature is suitable, the execution component 400 controls the roller shutter device 210 to rotate forward and roll up the heat insulation curtain 230 to the rolled-up state, so that the greenhouse can fully receive sunlight. During the automatic operation of opening and closing the curtain, the execution component 400 continuously receives deviation monitoring signals from the visual detection component 300. If deviation exceeds a preset threshold, the system immediately stops and triggers an alarm. By using environmental physical parameters as trigger conditions for automatic control, this system achieves on-demand opening and closing of the insulation curtain 230 without increasing the burden of manual operation. Simultaneously, the deviation protection function is always online, improving the level of intelligence in greenhouse planting management while ensuring operational safety.

[0073] See Figure 1 As shown, according to some embodiments of the present invention, the roller shutter greenhouse system further includes: a control terminal 700, which is wirelessly connected to the execution component 400. The control terminal 700 has a display screen and an input module for receiving and displaying images acquired by the image acquisition device 310 and the operating status information of the roller shutter device 210, and sending control commands to the execution component 400.

[0074] By setting up a control terminal 700 that is wirelessly connected to the execution component 400 and has a display screen and input module, operators can remotely view the operating status and on-site images of the roller shutter device 210 without entering the greenhouse site, and issue control commands, thus realizing visualized remote control of the roller shutter greenhouse system.

[0075] The control terminal 700 can be a smartphone, tablet, or dedicated wireless remote control. It contains control software compatible with the execution component 400 and establishes a data connection with the execution component 400 via wireless communication methods such as Bluetooth, WiFi, 4G, or 5G. The display screen of the control terminal 700 displays real-time information transmitted back by the execution component 400, including on-site images or videos captured by the image acquisition device 310, containing positioning markers and trajectory reference markers, as well as the current operating status of the roller shutter device 210 (e.g., rolling up, unfolding, stopped, current position, whether deviation has occurred, etc.). Operators can intuitively understand the actual walking posture and position of the roller shutter device 210 by viewing the display screen. The input module can be virtual buttons or physical buttons on a touchscreen. Operators can send control commands such as start, stop, forward rotation, and reverse rotation of the roller shutter device 210 to the execution component 400 through the input module. After receiving the commands, the execution component 400 drives the roller shutter device 210 to perform the corresponding actions through the motor 240 control module and transmits the execution results back to the control terminal 700, forming a closed-loop command system. When deviation occurs, the control terminal 700 can receive alarm information pushed by the execution component 400 in real time and pop up a prompt on the display screen. Even if the operator is in a different location, he / she can know about the abnormal situation immediately and decide whether to intervene manually.

[0076] In some embodiments, the control software installed in the control terminal 700 can be implemented in the form of a mobile application (APP) or a mini-program. The mobile application can run on mainstream operating systems of smartphones or tablets, providing a graphical user interface and device management functions; the mini-program does not require separate installation and can be opened directly by scanning a QR code or searching within WeChat, suitable for temporary or lightweight use cases. Regardless of the software form used, it works in conjunction with the underlying wireless communication hardware of the control terminal 700 to realize data transmission and reception, image display, and command issuance functions with the execution component 400. Operators can flexibly choose according to their own usage habits and site conditions. It should be noted that the above software implementation method is a specific application form of the remote control function of this system and does not constitute a necessary limitation on the hardware structure of the roller shutter greenhouse system.

[0077] In some embodiments, the roller shutter greenhouse system also has a fault self-diagnosis function. Specifically, the MCU / SoC of the execution component 400 integrates a self-diagnosis program, which automatically performs hardware status checks on the image acquisition device 310, the wireless communication module, the motor 240 control module, the alarm device 500, and the interfaces of each sensor when the system starts up, to confirm whether each component is properly connected, whether the power supply is stable, and whether the communication is unobstructed; during the operation of the roller shutter device 210, the MCU / SoC also continuously monitors whether the image signal of the image acquisition device 310 is valid, whether the feedback signal of the motor 240 control module is normal, and the connection status of the wireless communication link. When the self-test detects a fault in any component (e.g., no image output from the image acquisition device 310, disconnection of the wireless communication module, overcurrent in the motor 240 control module, or no response from the sensor), the MCU / SoC immediately generates fault information including the fault type, fault occurrence time, and fault component identifier. This fault information is stored in the internal memory and simultaneously pushed to the remote control terminal 700 via the wireless communication module. The alarm device 500 is also triggered locally to issue a specific audible and visual alert (e.g., a buzzer at a different frequency or flashing lights of a different color), distinct from the deviation alarm. The remote control terminal 700's display screen shows detailed fault codes and troubleshooting suggestions, facilitating quick problem location and repair by operators. Furthermore, the fault self-test function also allows operators to manually trigger it at any time via the control terminal 700 to perform a comprehensive system check without activating the roller shutter operation.

[0078] The control method based on the roller shutter greenhouse system provided by the present invention will be described below. The control method based on the roller shutter greenhouse system described below can be referred to in correspondence with the roller shutter greenhouse system described above.

[0079] See Figure 5 As shown, the control method based on a roller shutter greenhouse system provided in this embodiment of the invention includes: S510: Obtain image information of the first positioning marker 320, the first trajectory reference marker 330, and the second trajectory reference marker 340; S520: Based on the image information of the first positioning marker 320, the first trajectory reference marker 330, and the second trajectory reference marker 340, determine the first lateral offset of the first positioning marker 320 relative to the first trajectory reference marker 330, and the second lateral offset of the first positioning marker 320 relative to the second trajectory reference marker 340. S530. Based on the fact that the absolute value of the difference between the first lateral offset and the second lateral offset is greater than a preset threshold, the roller shutter device 210 is controlled to stop operating.

[0080] The control method for a roller shutter greenhouse system provided by this invention acquires image information of the first positioning marker 320, the first trajectory reference marker 330, and the second trajectory reference marker 340. It determines two lateral offsets of the positioning marker relative to the left and right trajectory reference markers, and controls the roller shutter device 210 to stop operating when the absolute value of the difference between the two lateral offsets exceeds a preset threshold. This method can automatically and in real-time identify the deviation state of the roller shutter device 210 and execute a shutdown protection, eliminating the need for manual on-site observation and operation. It avoids malfunctions such as curtain damage, roller shutter machine jamming, or motor 240 burnout caused by untimely handling of deviation. This solves the defects of existing technologies where roller shutter machine deviation cannot be automatically identified and protected, relying on manual on-site shutdown and easily leading to equipment damage. This method corresponds to the aforementioned roller shutter greenhouse system, using image recognition and difference comparison as the core judgment logic, and has the advantages of simple calculation, timely response, and accurate judgment.

[0081] Specifically, in step S510, an image acquisition device 310, fixedly installed on the upper part of the support rod of the greenhouse body 100, acquires images of the walking area of ​​the roller shutter device 210 in real time. The lens of the image acquisition device 310 faces the walking trajectory of the roller shutter device 210, and the viewing angle covers the area corresponding to the first positioning marker 320, the first trajectory reference marker 330, and the second trajectory reference marker 340. The image acquisition device 310 can continuously acquire static images at preset time intervals, or it can acquire real-time video streams and extract keyframes from them. The acquired image information includes the position of the first positioning marker 320 in the image and the positions of the inner edge lines of the first trajectory reference marker 330 and the second trajectory reference marker 340. The image acquisition device 310 transmits the acquired image information in the form of digital signals to the image interface of the execution component 400 via a data line. The MCU / SoC receives and stores the information in its internal cache, awaiting subsequent processing. When the greenhouse is long and multiple image acquisition devices 310 are installed, the execution component 400 selects the corresponding image acquisition device 310 as the current image data source based on the real-time walking position of the roller shutter device 210, or simultaneously stitches or merges the images acquired by multiple image acquisition devices 310 to ensure that valid image information containing the three markers is always obtained. Through the above method, step S510 provides an accurate and continuous visual data foundation for subsequent offset calculations.

[0082] In step S520, the MCU / SoC of the execution component 400 performs preprocessing, feature extraction, and target localization calculation on the received image information in sequence. For example, firstly, the original image is preprocessed by grayscale conversion, binarization, and filtering and denoising to reduce the impact of illumination changes and noise interference; then, the pixel coordinates of the first positioning marker 320, the first trajectory reference marker 330, and the second trajectory reference marker 340 in the image are extracted by color segmentation or edge detection algorithms, wherein the position coordinates of the inner edge lines of the first trajectory reference marker 330 and the second trajectory reference marker 340 are extracted respectively, and the position coordinates of the center point or preset feature point of the first positioning marker 320 are extracted. After extracting the coordinates of each feature point, the MCU / SoC calculates the pixel distance between the center point of the first positioning marker 320 and the inner edge line of the first trajectory reference marker 330 in the horizontal direction of the image. Based on a pre-calibrated conversion coefficient between pixel distance and actual distance, this pixel distance is converted into an actual first horizontal offset. Similarly, the horizontal pixel distance between the center point of the first positioning marker 320 and the inner edge line of the second trajectory reference marker 340 is calculated and converted into an actual second horizontal offset. Both horizontal offsets are in units of actual length, such as centimeters or millimeters, for subsequent comparison with a preset threshold. During the above calculation process, if there is image data collected by multiple image acquisition devices 310, the MCU / SoC can select the image in the main field of view area where the rolling shutter device 210 is located for processing, or perform fusion verification on the image data in overlapping areas to improve positioning accuracy. Through the above image processing and coordinate calculation, step S520 quantifies the original image information into two horizontal offset values ​​representing the degree of deviation, providing a quantitative basis for deviation judgment.

[0083] In step S530, the MCU / SoC of the execution component 400 first calculates the absolute value of the difference between the first lateral offset and the second lateral offset. The specific calculation formula is: Offset difference = |First lateral offset - Second lateral offset|. The physical meaning of this offset difference is that it eliminates the system deviation caused by the image acquisition angle or calibration error in a single offset, and directly reflects the degree to which the first positioning marker 320 deviates from the center line between the first trajectory reference marker 330 and the second trajectory reference marker 340: when the roller shutter device 210 moves in the center, the first lateral offset and the second lateral offset are basically equal, and the absolute value of their difference is close to zero; when the roller shutter device 210 deviates to the left, the first lateral offset decreases while the second lateral offset increases, and the absolute value of the difference increases accordingly; the opposite is true when the roller shutter device 210 deviates to the right. The MCU / SoC compares the calculated offset difference with a preset threshold stored in its internal memory. This preset threshold is a permissible deviation range set based on the width of the greenhouse arch, the allowable swing amplitude of the roller shutter device 210 during normal operation, and the safety coverage requirements of the insulation curtain 230. When the offset difference is less than or equal to the preset threshold, the MCU / SoC determines that the roller shutter device 210 is in normal operation and does not perform a stop operation. The roller shutter device 210 continues to operate according to the current instruction, while the MCU / SoC continues to receive the next frame of image information for continuous monitoring. When the offset difference is greater than the preset threshold, the MCU / SoC determines that the roller shutter device 210 has deviated beyond the permissible range and immediately cuts off the power supply to the drive motor 240 of the roller shutter device 210 through the motor 240 control module, causing the roller shutter device 210 to stop urgently. At the same time as cutting off the power supply to the motor 240, the MCU / SoC can also trigger the audible and visual alarm device 500 to issue an alarm signal and push the deviation stop information to the remote control terminal 700 through the wireless communication module. Through the above judgment and execution logic, step S530 realizes automatic identification and real-time protection of deviation state. The entire judgment and shutdown process is completed within the same control cycle of image acquisition, with short response time and no need for manual intervention.

[0084] The preset threshold value can be comprehensively set based on the actual width of the greenhouse arch, the allowable swing amplitude of the roller shutter device 210 during normal movement, the safety coverage redundancy of the insulation curtain 230, and the resolution accuracy of the image acquisition device 310. Specifically, for greenhouses with wider arches and a larger safety margin between the edge of the insulation curtain 230 and the edge of the greenhouse film, the preset threshold can be set to a relatively large value, such as 5 cm to 8 cm, to avoid frequent accidental shutdowns due to slight normal swings of the roller shutter device 210. For greenhouses with narrower arches and high coverage accuracy requirements for the insulation curtain 230, the preset threshold can be set to a smaller value, such as 2 cm to 3 cm, to ensure that the edge of the insulation curtain 230 does not leave the effective coverage area of ​​the greenhouse film. The preset threshold can also be set in segments according to the different walking positions of the roller shutter device 210. For example, a slightly larger offset is allowed in the middle area of ​​the greenhouse, while a stricter threshold is used near the two edge areas to balance work efficiency and safety. Furthermore, the preset thresholds are stored in the non-volatile memory of the MCU / SoC, allowing operators to adjust them on-site via the control terminal 700 or the field operation panel. Multiple modifications are supported to adapt to varying requirements based on different seasons, insulation curtain 230 statuses, or different crops. Through the flexible configuration of the preset thresholds, this method achieves a reasonable balance between reliable protection and reduced malfunctions, meeting the needs of diverse application scenarios.

[0085] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention 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 or additions 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 the present invention.

Claims

1. A roller shutter greenhouse system, characterized in that, include: The greenhouse itself; A roller blind assembly includes a roller blind device, a roller, and an insulation curtain. The roller blind device and the roller are both located on the greenhouse body and are configured to move along the arch surface of the greenhouse body. The output end of the roller blind device is connected to the roller, and one end of the insulation curtain is connected to the roller, so as to drive the insulation curtain to switch between a rolled-up state and an unfolded state under the driving action of the roller blind device. The visual inspection component includes an image acquisition device, a first positioning marker, a first trajectory reference marker, and a second trajectory reference marker. The first positioning marker is disposed on the roller shutter device, and the first trajectory reference marker and the second trajectory reference marker are symmetrically disposed on both sides of the arch surface of the greenhouse body along the length direction. The image acquisition device is used to acquire images of the first positioning marker, the first trajectory reference marker, and the second trajectory reference marker. An execution component is communicatively connected to both the image acquisition device and the roller shutter device, and is configured to determine, based on the image acquired by the image acquisition device, a first lateral offset of the first positioning marker relative to the first trajectory reference marker and a second lateral offset of the first positioning marker relative to the second trajectory reference marker, and to control the roller shutter device to stop operating when the absolute value of the difference between the first lateral offset and the second lateral offset is greater than a preset threshold.

2. The roller shutter greenhouse system according to claim 1, characterized in that, Both the first trajectory reference marker and the second trajectory reference marker are flexible marking strips, and the flexible marking strips are provided with scale markings or character markings. Alternatively, both the first trajectory reference marker and the second trajectory reference marker are rigid marker strips, and the rigid marker strips are provided with multiple position marking portions at intervals.

3. The roller shutter greenhouse system according to claim 1, characterized in that, The roller blind assembly also includes a fixed support rod and a follower support rod. The fixed support rod is located on one side of the greenhouse body along the width direction. The first end of the follower support rod is hinged to the fixed support rod, and the second end is connected to the roller blind device. The image acquisition device and the execution component are both located on the fixed support rod.

4. The roller shutter greenhouse system according to claim 3, characterized in that, The visual inspection component further includes a second positioning marker, which is disposed on the follow-up support rod.

5. The roller shutter greenhouse system according to any one of claims 1 to 4, characterized in that, The visual inspection component includes multiple image acquisition devices, which are arranged at intervals along the walking trajectory of the roller shutter device to acquire images of the positioning marker, the first trajectory reference marker, and the second trajectory reference marker in segments.

6. The roller shutter greenhouse system according to any one of claims 1 to 4, characterized in that, Also includes: An alarm device is communicatively connected to the execution component, and the alarm device is configured to issue an alarm signal under the control of the execution component when the absolute value of the difference between the first lateral offset and the second lateral offset is greater than a preset threshold.

7. The roller shutter greenhouse system according to any one of claims 1 to 4, characterized in that, Also includes: A sensing component, which is communicatively connected to the execution component, is used to detect environmental physical parameters inside and / or outside the greenhouse, including light intensity and / or temperature.

8. The roller shutter greenhouse system according to claim 7, characterized in that, The sensing components include a light intensity sensor and a temperature sensor. The light intensity sensor is used to detect the light intensity outside the greenhouse body, and the temperature sensor is used to detect the temperature inside and / or outside the greenhouse body.

9. The roller shutter greenhouse system according to any one of claims 1 to 4, characterized in that, Also includes: The control terminal is wirelessly connected to the execution component. The control terminal has a display screen and an input module for receiving and displaying images acquired by the image acquisition device and the operating status information of the roller shutter device, and sending control commands to the execution component.

10. A control method for a roller shutter greenhouse system as described in any one of claims 1 to 9, characterized in that, include: Acquire image information of the first positioning marker, the first trajectory reference marker, and the second trajectory reference marker; Based on the image information of the first positioning marker, the first trajectory reference marker, and the second trajectory reference marker, a first lateral offset of the first positioning marker relative to the first trajectory reference marker and a second lateral offset of the first positioning marker relative to the second trajectory reference marker are determined. The roller shutter device is controlled to stop operating when the absolute value of the difference between the first lateral offset and the second lateral offset is greater than a preset threshold.

Images