Lawn trimming height sensing device

Abstract

The invention relates to the technical field of lawn planting and maintenance, in particular to a lawn trimming height sensing device which comprises a plurality of mounting frames, and sensing modules are arranged in all the mounting frames; a first bracket is arranged in the mounting frame; a rotating frame is arranged on the first support, and the sensing module can monitor the height of the lawn in a bird's-eye view type detection mode through the mounting frame arranged on the lawn in a rectangular array mode in cooperation with driving of the first support to the sensing module, so that the device can flexibly adapt to areas with large terrain fluctuation. The monitoring flexibility of the device can be further improved by matching with rotation of the rotating frame and the sensing module, even on uneven terrains, accurate monitoring and comprehensive covering of the height of the lawn can be achieved by increasing the density of the device and matching with adjustment of the sensing module, and the consistency of the lawn trimming effect is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of lawn planting and maintenance, and in particular to a lawn mowing height sensing device. Background Art

[0002] Golf courses have varying turf height requirements depending on the specific area's function. Each area has specific regulations for mowing the turf to ensure it's suitable for ball rolling and hitting, while also meeting the players' athletic needs. However, traditional mowing processes often rely on manual control, with maintenance workers using visual observation and simple measurement techniques to determine whether the turf needs mowing. This approach lacks precise control, leading to untimely mowing and maintenance, making it difficult to maintain optimal turf condition and negatively impacting the golf experience for golfers and enthusiasts.

[0003] In the prior art, for example, Chinese patent announcement number CN204963804U discloses a lawn mowing height sensing device for a golf course. This patent senses the lawn height through a plurality of sensing mechanisms arranged at equal intervals. The sensing mechanism includes a main body, the bottom of which is fixedly connected to the ground through a bottom flange, and a plurality of height sensors are installed on the front side of the main body. The plurality of height sensors are arranged in two rows, which can sense the height information of the lawn and feed it back to the control room. When the height of the lawn is higher than the specified range, the control room will issue an alarm signal or prompt information to remind maintenance workers to mow the lawn. Although this patent has achieved the monitoring and prompting functions of the lawn height to a certain extent, the sensing module is a fixed design and cannot be dynamically adjusted according to the undulations of the lawn terrain, nor can it fully cover the monitoring of the surrounding lawns. The detection accuracy and range are limited, and manual intervention is still required, and the level of automation is low. Summary of the Invention

[0004] To address the above issues, a lawn mowing height sensing device is provided. By utilizing mounting brackets arranged in a rectangular array on the lawn, coupled with a first bracket driving a sensing module, the sensing module can monitor lawn height from a bird's-eye view, making the device adaptable to areas with large terrain fluctuations. The rotation of the rotating bracket and sensing module further enhances the device's monitoring flexibility. Even on uneven terrain, by increasing the density of the mounting brackets and adjusting the sensing modules, precise monitoring and comprehensive coverage of lawn height can be achieved, ensuring consistent lawn mowing results.

[0005] In order to solve the problems of the existing technology, the present invention provides a lawn mowing height sensing device, comprising a plurality of mounting frames arranged in a rectangular shape and buried underground in the lawn, wherein all the mounting frames are provided with a sensing module capable of identifying the height of the lawn; a first bracket capable of moving along its height direction is provided in the mounting frame; a rotating frame is provided on the first bracket, and the rotating axis of the rotating frame extends in the vertical direction; the sensing module is rotatably mounted on the rotating frame, and the rotating axis of the sensing module is perpendicular to the rotating axis of the rotating frame; a signal transmission module is provided on the top of the first bracket; when the first bracket descends, it can drive the rotating frame and the sensing module to retract inside the mounting frame.

[0006] Preferably, the first bracket is a rectangular shell structure, and the first bracket is provided with a top cover, a monitoring cavity and a driving cavity in sequence from high to low along the height direction. The sensing module is arranged in the monitoring cavity, and the outer wall of the monitoring cavity is made of transparent glass.

[0007] Preferably, a driving assembly for driving the first bracket to move is provided at the bottom of the mounting frame, and the driving assembly includes a first rotary drive motor, a screw rod and two retractable guide rods. The screw rod is rotatably arranged in a vertical state inside the mounting frame, and a sleeve is provided on the top of the first bracket and is sleeved on the screw rod. The sleeve is threadedly matched with the screw rod, and the two ends of the guide rod are respectively fixedly connected to the first bracket and the mounting frame. The first rotary drive motor is located at the bottom of the screw rod, and the screw rod is transmission-connected to the first rotary drive motor.

[0008] Preferably, a mounting hole is provided on the top of the driving cavity, the rotating frame is sleeved on the mounting hole, a partition is provided in the driving cavity, and a second rotary drive motor for driving the rotating frame to rotate is provided below the partition.

[0009] Preferably, the sensing module is provided with a support shaft extending in a horizontal direction, the rotating frame is provided with a mounting plate, the mounting plate is sleeved on the mounting hole, two support plates are provided on the mounting plate, the support shaft is sleeved between the two support plates, a third rotary drive motor is provided below the mounting plate, and a synchronous belt is provided between the support shaft and the output shaft of the third rotary drive motor.

[0010] Preferably, the first bracket is provided with a height sensor, and the sensing module and the rotating frame are both provided with angle sensors.

[0011] Preferably, the sensing module includes an adjustment plate, and an infrared sensor and a laser sensor are respectively arranged on the top and bottom of the adjustment plate.

[0012] Preferably, a signal transmission cavity is provided in the top cover, the signal module is provided inside the signal transmission cavity, and the top cover has a conical structure.

[0013] Preferably, a connecting portion matching the monitoring cavity is provided below the top cover, a groove surrounding the contour of the connecting portion is provided on the peripheral side thereof, and a sealing ridge matching the groove is provided on the mounting frame.

[0014] Preferably, the signal transmission module has a wireless data transmission unit.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. This invention utilizes mounting brackets arranged in a rectangular array on the lawn, coupled with a first bracket driving a sensing module. This allows the sensing module to monitor lawn height from a bird's-eye view, making the device adaptable to areas with large terrain variations. The rotation of the rotating bracket and sensing module further enhances the device's monitoring flexibility. Even on uneven terrain, by increasing the density of the mounting brackets and adjusting the sensing modules, precise monitoring and comprehensive coverage of lawn height can be achieved, ensuring consistent lawn mowing results.

[0017] 2. The first bracket of this invention allows the sensor module to retract into the mounting frame when not in use, preventing the sensor module or other components from interfering with the golfer's normal activities. The regular lifting and monitoring design not only meets the needs of the turf's growth cycle, but also reduces interference with course use, enhancing the device's practicality and safety.

[0018] 3. This invention incorporates a wireless data transmission unit via a signal transmission module, enabling efficient transmission of monitoring data. The device can provide real-time feedback of lawn height information to a back-end controller, allowing staff to adjust the trimmer's cutting height, improving the efficiency and intelligence of lawn maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The present invention is a schematic diagram of a three-dimensional structure in which a first bracket of a lawn mowing height sensing device is retracted into a mounting bracket.

[0020] Figure 2 The present invention is a schematic diagram of the three-dimensional structure of a lawn mowing height sensing device when a first bracket is ejected from a mounting frame.

[0021] Figure 3 The present invention is a front view of a first bracket of a lawn mowing height sensing device when it is ejected from a mounting frame.

[0022] Figure 4 The present invention is a schematic diagram of the cross-sectional structure of a lawn mowing height sensing device.

[0023] Figure 5 The present invention is a schematic diagram of a cross-sectional three-dimensional structure of a lawn mowing height sensing device.

[0024] Figure 6 The present invention is a schematic diagram of the three-dimensional structure of a first bracket in a lawn mowing height sensing device.

[0025] Figure 7 The present invention is a schematic diagram of the three-dimensional structure of a rotating frame and a sensing module in a lawn mowing height sensing device.

[0026] Figure 8 An exploded view of a lawn mowing height sensing device.

[0027] Figure 9 The present invention is a cross-sectional schematic diagram of a lawn mowing height sensing device located on a lawn at a higher ground.

[0028] Figure 10 The present invention is a top view of a lawn mowing height sensing device with multiple mounting brackets located on a lawn.

[0029] Figure 11 The present invention is a cross-sectional schematic diagram of a lawn mowing height sensing device in which multiple mounting frames are buried in a lawn.

[0030] The numbers in the figure are:

[0031] 1. Mounting frame; 11. First drive assembly; 111. First rotary drive motor; 112. Screw rod; 113. Guide rod; 12. Sealing ridge; 2. First bracket; 21. Top cover; 211. Transmission module; 212. Signal transmission cavity; 213. Connecting part; 214. Groove; 22. Monitoring cavity; 221. Sensing module; 2211. Support shaft; 2212. Adjustment plate; 2213. Infrared sensor; 2214. Laser sensor; 23. Drive cavity; 231. Mounting hole; 232. Second rotary drive motor; 233. Partition; 234. Rotating frame; 2341. Mounting plate; 2342. Support plate; 2343. Third rotary drive motor; 2344. Synchronous belt; 24. Sleeve. DETAILED DESCRIPTION

[0032] In order to further understand the features, technical means, specific objectives and functions achieved by the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] like Figures 1 to 5 and Figures 9 to 11As shown: A lawn mowing height sensing device includes a plurality of mounting frames 1 arranged in a rectangular shape and buried underground in the lawn. All mounting frames 1 are provided with sensing modules 221 capable of identifying the height of the lawn; a first bracket 2 capable of moving along its height direction is provided in the mounting frame 1; a rotating frame 234 is provided on the first bracket 2, and the rotating axis of the rotating frame 234 extends in the vertical direction; the sensing module 221 is rotatably mounted on the rotating frame 234, and the rotating axis of the sensing module 221 is perpendicular to the rotating axis of the rotating frame 234; a signal transmission module 211 is provided on the top of the first bracket 2; when the first bracket 2 descends, it can drive the rotating frame 234 and the sensing module 221 to retract inside the mounting frame 1.

[0034] Because lawns are affected by topography, lawn heights vary from area to area. Traditional lawn sensors can only monitor a fixed height and cannot accurately identify changes in topography. This can lead to uneven lawns during mowing, especially in golf courses, where lawn height requirements are extremely strict, making it difficult to meet the demands of precise mowing. The lawn mowing height sensor uses multiple mounting brackets 1 buried underground to monitor lawn height in real time. Each mounting bracket 1 houses a sensing module 221 capable of identifying and sensing the height of the lawn surface. The sensing module 221 is mounted on a first bracket 2, which can be raised and lowered along the height of the mounting bracket 1. This movement of the first bracket 2 drives a rotating bracket 234 and the sensing module 221 mounted on it. Through this adjustment, the sensing module 221 automatically adapts to changes in lawn height, achieving precise monitoring.

[0035] Mounting frames 1 are arranged in a rectangular row on the lawn. Sensor modules 221 utilize a bird's-eye view detection method, enabling comprehensive monitoring of lawn height changes. For areas with significant terrain undulation, the density of mounting frames 1 can be increased to improve coverage and effectiveness of lawn monitoring. By appropriately adjusting the spacing and layout of mounting frames 1, precise detection of varying terrain and lawn heights is achieved, ensuring accurate sensing and real-time feedback of lawn height data even in uneven terrain. This ensures that the sensor's detection range covers key areas without visually or physically interfering with the active area.

[0036] Because this lawn mowing height sensor is primarily used on golf courses, it must be designed to minimize interference with golfing. Leaving the first bracket 2 of the sensor module 221 extended for extended periods could disrupt golfing. Therefore, the sensor module 221 is periodically raised and lowered to extend and monitor the surrounding lawn. This ensures that the sensor module 221 monitors the lawn only when needed and retracts into the mounting bracket 1 when not in use, thus preventing interference with golfing.

[0037] Furthermore, to improve the accuracy of lawn height monitoring, a rotating frame 234 is provided on the first bracket 2. The sensing module 221 is rotatably mounted on the rotating frame 234, with the rotation axis of the sensing module 221 perpendicular to the rotation axis of the rotating frame 234. This arrangement allows the sensing module 221 to flexibly rotate both horizontally and vertically, expanding its monitoring range. With the coordination of the raising and lowering of the first bracket 2, the sensing module 221 can effectively monitor the surrounding lawn even in uneven terrain, ensuring that lawns in different terrain areas can be accurately identified and reported, thereby preventing the adverse effects of terrain differences on lawn mowing.

[0038] The signal transmission module 211 transmits the lawn height information identified by the sensing module 221 to the back-end controller in real time, and the back-end controller then transmits the data to the lawn mower control system, so that the lawn mower automatically adjusts the mowing parameters according to the changes in lawn height, ensuring that the lawn mowing work is accurate and efficient.

[0039] like Figures 2 to 8 As shown: the first bracket 2 is a rectangular shell structure, and the first bracket 2 is provided with a top cover 21, a monitoring cavity 22 and a driving cavity 23 in sequence from high to low along the height direction. The sensing module 221 is arranged in the monitoring cavity 22, and the outer wall of the monitoring cavity 22 is made of transparent glass.

[0040] The first bracket 2 adopts a rectangular shell structure, which has good strength and stability and can effectively support the working requirements of the sensing module 221 and the rotating frame 234. The rectangular design facilitates installation and fixation, improving the reliability and durability of the entire device.

[0041] By providing a monitoring cavity 22 within the first bracket 2, the sensing module 221 is stably positioned within the cavity, ensuring that the sensing module 221 can accurately and stably monitor lawn height. The outer wall of the monitoring cavity 22 is made of transparent glass, allowing the sensing module 221 to clearly obtain lawn surface height data through the transparent window without interference from the external environment, thereby improving the accuracy and reliability of data collection. This effectively protects the sensing module 221 from external physical damage. Cleaning the transparent surface helps maintain the clear perception of the sensing module 221, ensuring the accuracy of the monitoring data and the long-term efficient operation of the equipment.

[0042] At the same time, transparent glass allows the sensing module 221 to operate internally without being affected by the outside world, preventing damage to the sensing module 221 from dust, moisture, or other environmental factors. Because the outer wall of the monitoring chamber 22 is made of a transparent material, operators can directly observe the status of the sensing module 221, facilitating routine inspection and maintenance of the equipment. If any problems occur, they can be promptly identified and repaired, improving the reliability of the equipment and the ease of operation. The use of transparent glass makes the overall device visually more concise and modern, adapting to various lawn environments. It also makes it easier for the device to blend in with the surrounding environment without causing significant visual interference.

[0043] The internal structure of the first bracket 2 is divided into a top cover 21, a monitoring chamber 22, and a drive chamber 23, achieving functional separation. The monitoring chamber 22 houses the sensing module 221, while the drive chamber 23 drives and regulates the movement of the sensing module 221. This partitioning not only simplifies the internal structure but also improves the coordination and efficiency of the various components.

[0044] like Figures 2 to 5 As shown: A driving assembly for driving the first bracket 2 to move is provided at the bottom of the mounting frame 1, and the driving assembly includes a first rotary drive motor 111, a screw rod 112 and two retractable guide rods 113. The screw rod 112 is rotatably arranged in a vertical state inside the mounting frame 1, and a sleeve 24 is provided on the top of the first bracket 2 and is sleeved on the screw rod 112. The sleeve 24 is threadedly engaged with the screw rod 112, and the two ends of the guide rod 113 are respectively fixedly connected to the first bracket 2 and the mounting frame 1, and the first rotary drive motor 111 is located at the bottom of the screw rod 112, and the screw rod 112 is transmission-connected to the first rotary drive motor 111.

[0045] By starting the first rotary drive motor 111, the output shaft of the first rotary drive motor 111 drives the rotation of the screw rod 112 connected thereto, and the rotation of the screw rod 112 drives the movement of the sleeve 24 threadedly engaged therewith, so that the sleeve 24 can only move along the axial direction of the screw rod 112, thereby driving the first bracket 2 to be lifted and lowered. Due to the limitation of the guide rod 113, the first bracket 2 can only move along the axial direction of the guide rod 113, thereby realizing the lifting and lowering movement of the first bracket 2.

[0046] The threaded coupling between the screw rod 112 and the sleeve 24 ensures extremely high precision and stability in the vertical lifting of the first bracket 2. The rotation of the screw rod 112 allows the first bracket 2 to move up and down smoothly and evenly in the vertical direction, avoiding the shaking or instability that may occur in traditional lifting structures.

[0047] The drive assembly allows for flexible adjustment of the lifting height of the first bracket 2 to accommodate varying lawn height requirements. The threaded fit between the screw rod 112 and the sleeve 24 allows for smoother adjustment and enables multiple, efficient lifting operations without complex adjustments. The drive assembly's simple structure and ease of installation allow for rapid deployment of the entire device. Furthermore, the screw rod 112 and first rotary drive motor 111 are easily disassembled and repaired, reducing repair time and costs in the event of equipment failure.

[0048] The compact arrangement of the screw rod 112 and the guide rod 113 enables the entire drive assembly to be effectively integrated into the mounting frame 1, taking up less space, avoiding occupying too much space, adapting to the needs of the golf course, ensuring the concealment of the equipment and not interfering with the daily use of golf.

[0049] like Figures 4 to 8 As shown: a mounting hole 231 is provided on the top of the driving chamber 23, a rotating frame 234 is sleeved on the mounting hole 231, a partition 233 is provided in the driving chamber 23, and a second rotary driving motor 232 for driving the rotating frame 234 to rotate is provided below the partition 233.

[0050] By providing a mounting hole 231 at the top of the drive chamber 23 and fitting the rotating frame 234 over the mounting hole 231, the stable installation of the rotating frame 234 is ensured. This allows the rotating frame 234 to rotate smoothly on a fixed support basis, avoiding possible shaking or instability during the rotation process, thereby improving the accuracy and reliability of the entire device.

[0051] The second rotary drive motor 232 drives the rotating frame 234, allowing the rotation and elevation of the sensing module 221 to be independent, thus preventing interference between the two. By separating the elevation and rotation drives, the overall stability of the device is improved and the operation is more flexible, allowing the sensing module 221 to be adjusted at different heights for precise and comprehensive lawn monitoring.

[0052] The partition 233 effectively isolates the different functional areas within the drive chamber 23, ensuring that the second rotary drive motor 232 is solely responsible for driving the rotation of the turret 234. This prevents mechanical interference during the rotation of the second rotary drive motor 232 and improves the precision of the rotation control. The turret 234 allows for more precise rotation of the lawn height sensing module 221, ensuring that the sensing module 221 accurately captures the surrounding lawn height information at any angle.

[0053] like Figures 4 to 8 As shown: a support shaft 2211 extending in the horizontal direction is provided on the sensing module 221, a mounting plate 2341 is provided on the rotating frame 234, the mounting plate 2341 is sleeved on the mounting hole 231, two support plates 2342 are provided on the mounting plate 2341, the support shaft 2211 is sleeved between the two support plates 2342, a third rotation drive motor 2343 is provided below the mounting plate 2341, and a synchronous belt 2344 is provided between the support shaft 2211 and the output shaft of the third rotation drive motor 2343.

[0054] The support shaft 2211 firmly supports the sensing module 221 on a horizontal surface, preventing the sensing module 221 from tilting or deflecting due to vibration or external force during operation, thereby ensuring that the sensing module 221 can stably monitor the lawn height.

[0055] The provision of third rotary drive motor 2343 effectively improves the rotational accuracy and response speed of sensing module 221. By connecting third rotary drive motor 2343 to support shaft 2211 via timing belt 2344, precise synchronization between the drive motor and sensing module 221 is achieved, ensuring that sensing module 221 rotates at the predetermined angle, effectively avoiding errors and improving the accuracy of lawn height detection.

[0056] Through precise rotation control, the sensing module 221 can perform a comprehensive scan of lawn height in different areas, ensuring that each monitoring area is accurately covered and avoiding monitoring blind spots caused by uneven terrain or uneven rotation.

[0057] The support shaft 2211 and mounting plate 2341 allow for a more compact layout of the rotating components of the sensing module 221, improving space utilization and reducing the overall size of the device. This makes it more adaptable and allows it to operate efficiently in limited spaces. Adjustment and maintenance are also more convenient. If a malfunction occurs, maintenance personnel can easily adjust the tension of the timing belt 2344 or replace components, ensuring long-term stable operation of the device and reducing downtime.

[0058] like Figures 4 to 8 As shown: a height sensor is provided on the first bracket 2, and angle sensors are provided on both the sensing module 221 and the rotating frame 234.

[0059] A height sensor is installed on the first bracket 2 to monitor the height changes of the lawn in real time, thereby accurately identifying the height of the lawn in different areas. This direct height sensing function improves the real-time and accuracy of the device, ensures the accuracy of lawn mowing, and avoids over-mowing or uneven mowing.

[0060] Angle sensors installed on the sensing module 221 and the rotating frame 234 can detect the angular position of the sensing module 221 and the rotating frame 234 in real time. Through the angle sensors, the system can accurately obtain the rotation angle of the sensing module 221, ensuring that the rotation angle of the sensing module 221 at different positions conforms to the predetermined monitoring path, thereby improving the comprehensive coverage and accuracy of lawn monitoring.

[0061] The coordinated operation of height and angle sensors enables the device to acquire multi-dimensional monitoring data during the lawn mowing process. This multi-sensing mechanism reduces the potential errors associated with a single sensor and improves the reliability and stability of data feedback during the mowing process. The device can dynamically adjust to changes in height and angle, avoiding deviations caused by terrain changes or sensor errors.

[0062] The sensing module 221 adjusts its detection range based on the angle sensor data, ensuring accurate monitoring of lawn height in all areas, improving comprehensiveness and efficiency of lawn mowing. The device automatically analyzes and processes data, intelligently adjusting mowing strategies and reducing manual intervention for efficient and precise mowing.

[0063] The use of the angle sensor and the height sensor improves the fault detection capability of the device. If the angle of the sensing module 221 or the height of the lawn is abnormal, the device can detect it in real time and send an alarm signal or perform automatic calibration.

[0064] like Figures 4 to 8As shown, the sensing module 221 includes an adjustment plate 2212 , and an infrared sensor 2213 and a laser sensor 2214 are respectively arranged on the top and bottom of the adjustment plate 2212 .

[0065] By arranging both infrared sensor 2213 and laser sensor 2214 on adjustment plate 2212, the advantages of both can be fully utilized. Infrared sensor 2213 is suitable for rapid height measurement in flat areas, while laser sensor 2214 provides higher-precision measurements, especially in complex terrain or areas with large variations in lawn height. Therefore, the combination of infrared and laser sensors 2214 enables more comprehensive and accurate lawn height monitoring.

[0066] The combination of infrared sensor 2213 and laser sensor 2214 enables sensing module 221 to collect lawn height data in real time and transmit it to the back-end control system via signal transmission module 211, ensuring that the lawn mower can make timely adjustments and perform mowing operations. This real-time feedback mechanism greatly improves the efficiency and accuracy of lawn mowing.

[0067] By adopting the combination of the infrared sensor 2213 and the laser sensor 2214, the error caused by a single sensor being limited by environmental factors (such as light, temperature, humidity, etc.) can be effectively avoided, thereby improving the accuracy of lawn height measurement.

[0068] like Figures 4 to 8 As shown, a signal transmission cavity 212 is provided in the top cover 21 , the signal module is provided inside the signal transmission cavity 212 , and the top cover 21 is a conical structure.

[0069] The top surface of the conical structure of the top cover 21 is preferably flat. This flat top surface effectively improves the stability of the top of the device. The flat top surface provides better support, ensuring that the entire device remains stable under external forces. This is particularly true when athletes pass by on a golf course, as it provides a larger contact area, thereby reducing the risk of damage or injury from stepping on the device and preventing athletes from accidentally injuring themselves from the sharp edges of the conical structure when walking across it.

[0070] The flat top cover 21 can effectively reduce the accumulation of water on the top surface, avoid the corrosion problem caused by water accumulation, and extend the service life of the device. In addition, the flat top surface allows water to flow away quickly, thereby improving the weather resistance of the device and adapting to use in more different environmental conditions.

[0071] By providing the signal transmission cavity 212 and placing the signal module in the top cover 21 , the signal module can be located on the top of the mounting frame 1 , thereby ensuring stable signal transmission and preventing interference with the signal transmission from the external environment.

[0072] like Figures 4 to 8As shown: a connecting portion 213 matching the monitoring cavity 22 is provided below the top cover 21 , a groove 214 surrounding the contour of the connecting portion 213 is provided on the peripheral side, and a sealing ridge 12 matching the groove 214 is provided on the mounting frame 1 .

[0073] By setting the connecting portion 213, the top cover 21 forms an eave of the connecting portion 213. By setting the eaves, rainwater is not easy to fall on the monitoring cavity 22 when it rains, ensuring that the monitoring cavity 22 can normally monitor the height of the lawn in rainy weather. By setting the groove 214 and the sealing ridge 12, when the first bracket 2 is located inside the mounting frame 1, the sealing between the first bracket 2 and the mounting frame 1 can be ensured, effectively preventing the entry of dust, moisture and other external pollutants, protecting the components in the monitoring cavity 22 from being affected by the external environment, and ensuring the long-term stable operation of the device.

[0074] The structure of the groove 214 and the sealing ridge 12 makes the connection between the top cover 21 and the mounting frame 1 easier and safer. At the same time, when maintenance is required, it can be easily disassembled without affecting the stability of other parts of the device, reducing the complexity of the maintenance process.

[0075] like Figures 3 to 5 As shown: the signal transmission module 211 has a wireless data transmission unit.

[0076] The wireless data transmission unit can select the appropriate communication protocol based on different application requirements. For short-range transmission, Bluetooth or Zigbee are suitable. These technologies are low-power and suitable for data transmission within a small range. For lawn mowing applications that require close proximity or direct interaction between devices, such as obtaining real-time lawn height data when the devices are close together, Bluetooth provides efficient data transmission and reduces battery consumption.

[0077] For large-scale transmission, Wi-Fi or LoRa can be selected to provide longer-distance signal coverage. The wireless data transmission unit can handle real-time transmission of large amounts of data and is suitable for data that requires high-frequency transmission or large bandwidth.

[0078] Combining these two wireless communication protocols allows for flexible configuration based on the actual usage environment, optimizing transmission efficiency and power consumption. The sensing module 221 periodically or in real time collects lawn height data, which is then transmitted to the backend controller via a wireless data transmission unit. The controller then adjusts the height of the pruning frame based on this information to facilitate mowing of the lawn within the monitored area.

[0079] The above embodiments merely represent one or more embodiments of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of protection of the present invention. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present invention, and such modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the appended claims.

Claims

1. A lawn mowing height sensing device, characterized in that: It comprises a plurality of mounting frames (1) arranged in a rectangular shape and buried under a lawn, wherein all the mounting frames (1) are provided with a sensing module (221) capable of identifying the height of the lawn; A first bracket (2) capable of moving along its height direction is provided in the mounting frame (1); A rotating frame (234) is provided on the first bracket (2), and a rotating axis of the rotating frame (234) extends in a vertical direction; The sensing module (221) is rotatably mounted on the rotating frame (234), and the rotating axis of the sensing module (221) and the rotating axis of the rotating frame (234) are perpendicular to each other; A signal transmission module (211) is provided on the top of the first bracket (2); When the first bracket (2) descends, it can drive the rotating frame (234) and the sensing module (221) to retract inside the mounting frame (1).

2. The lawn mowing height sensing device according to claim 1, characterized in that: The first bracket (2) is a rectangular shell structure. The first bracket (2) is provided with a top cover (21), a monitoring cavity (22), and a driving cavity (23) in order from high to low along the height direction. The sensing module (221) is arranged in the monitoring cavity (22). The outer wall of the monitoring cavity (22) is made of transparent glass.

3. The lawn mowing height sensing device according to claim 2, characterized in that: A driving assembly for driving the first bracket (2) to move is provided at the bottom of the mounting frame (1), the driving assembly comprising a first rotary drive motor (111), a screw rod (112) and two retractable guide rods (113), the screw rod (112) being arranged in a vertical state and rotatable inside the mounting frame (1), a sleeve (24) sleeved on the screw rod (112) being provided at the top of the first bracket (2), the sleeve (24) being threadedly engaged with the screw rod (112), the two ends of the guide rod (113) being fixedly connected to the first bracket (2) and the mounting frame (1), respectively, the first rotary drive motor (111) being located at the bottom of the screw rod (112), and the screw rod (112) being transmission-connected to the first rotary drive motor (111).

4. The lawn mowing height sensing device according to claim 2, characterized in that: A mounting hole (231) is provided at the top of the driving chamber (23), and the rotating frame (234) is sleeved on the mounting hole (231). A partition (233) is provided in the driving chamber (23), and a second rotary drive motor (232) for driving the rotating frame (234) to rotate is provided below the partition (233).

5. The lawn mowing height sensing device according to claim 4, characterized in that: The sensing module (221) is provided with a support shaft (2211) extending in a horizontal direction, the rotating frame (234) is provided with a mounting plate (2341), the mounting plate (2341) is sleeved on the mounting hole (231), two support plates (2342) are provided on the mounting plate (2341), the support shaft (2211) is sleeved between the two support plates (2342), a third rotary drive motor (2343) is provided below the mounting plate (2341), and a synchronous belt (2344) is provided between the support shaft (2211) and the output shaft of the third rotary drive motor (2343).

6. The lawn mowing height sensing device according to claim 1, characterized in that: The first bracket (2) is provided with a height sensor, and the sensing module (221) and the rotating bracket (234) are both provided with angle sensors.

7. The lawn mowing height sensing device according to claim 1, characterized in that: The sensing module (221) comprises an adjustment plate (2212), and an infrared sensor (2213) and a laser sensor (2214) are respectively arranged on the top and bottom of the adjustment plate (2212).

8. The lawn mowing height sensing device according to claim 2, characterized in that: A signal transmission cavity (212) is provided in the top cover (21), and the signal module is provided inside the signal transmission cavity (212). The top cover (21) has a conical structure.

9. The lawn mowing height sensing device according to claim 8, characterized in that: A connecting portion (213) matching the monitoring cavity (22) is provided below the top cover (21), a groove (214) surrounding the contour of the connecting portion (213) is provided on the peripheral side thereof, and a sealing ridge (12) matching the groove (214) is provided on the mounting frame (1).

10. A lawn mowing height sensing device according to any one of claims 1 to 9, characterized in that: The signal transmission module (211) is provided with a wireless data transmission unit.

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