Mowing machine cleaning base station with multi-level detection function and control method thereof

Abstract

This invention discloses a lawnmower cleaning base station with multi-level water level detection and its control method, including a base station body, a liquid storage tank, a spray cleaning component, a water level detection component, and a control component. The base station body has a parking area and a wastewater collection point; the liquid storage tank is used to store, filter, and recycle wastewater; the spray nozzles of the spray cleaning component are connected to the liquid storage tank; the water level detection component is installed in the liquid storage tank to detect the water level; the control component receives the water level signal and controls the spraying action according to preset logic. This invention monitors the water level in the storage tank, enabling the control component to obtain the water level status in real time and adaptively control the cleaning process, achieving intelligent operation and water and energy conservation; low water level signals prevent the water pump from running dry, and high water level signals prevent wastewater overflow, improving safety and reliability; moreover, the structure is simple and the cost is controllable, providing a foundation for water recycling and unattended operation.

Description

Technical Field

[0001] This application relates to the technical field of cleaning equipment for intelligent lawn mowers, and in particular to a lawn mower cleaning base station with multi-water level detection function and its control method. Background Technology

[0002] With the development of yard automation and smart homes, automated lawnmowers have become widely used. After working outdoors, lawnmowers accumulate a large amount of grass clippings, mud, dust, and other contaminants on their blades, wheels, and outer shell. If not cleaned promptly, this not only affects the machine's appearance but can also lead to problems such as blade corrosion, wheel jamming, and sensor malfunction.

[0003] To address these issues, cleaning base stations specifically designed for lawnmower robots have emerged on the market. However, existing cleaning base stations generally only perform operations such as water spraying and waste removal according to preset schedules, resulting in fixed cleaning processes and poor adaptability. Summary of the Invention

[0004] The purpose of this invention is to overcome at least the technical problems of fixed cleaning processes and poor adaptability of existing lawnmower cleaning base stations. It provides a lawnmower cleaning base station with multi-level water level detection and its control method.

[0005] This application provides a lawnmower cleaning base station with multi-level water level detection, comprising a base station body, a liquid storage tank, a spray cleaning assembly, a water level detection assembly, and a control assembly. The base station body has a parking area for parking lawnmowers and a wastewater collection point. The liquid storage tank is disposed in the base station body and communicates with the wastewater collection point; a first filter is disposed inside the liquid storage tank. The spray cleaning assembly is disposed in the base station body and has spray heads, which communicate with the liquid storage tank. The water level detection assembly is disposed in the liquid storage tank to detect the water level. The control assembly is electrically connected to the water level detection assembly and the spray cleaning assembly to receive signals from the water level detection assembly and control the spraying action of the spray cleaning assembly according to preset logic.

[0006] In some embodiments, the water level detection component includes at least three water level sensors, and the plurality of water level sensors are spaced apart along the height direction of the liquid storage tank to correspond to the high water level, medium water level and low water level of the liquid storage tank, respectively.

[0007] In some embodiments, the side wall of the liquid storage tank is provided with a floating channel, which extends along the height direction of the liquid storage tank and communicates with the liquid storage tank to form a communicating vessel structure. The water level detection component also includes a sensing float, which is disposed in the floating channel; The floating channel has at least three predetermined positions spaced apart along its extension direction, and a plurality of water level sensors are positioned close to the predetermined positions in a corresponding manner.

[0008] In some embodiments, the first filter element divides the interior of the liquid storage tank into a first wastewater zone and a first clean water zone, and the first clean water zone is connected to the spray head through a first pipeline; The spray cleaning assembly also includes a spray pump electrically connected to the control assembly, and the spray pump is disposed in the first pipeline.

[0009] In some embodiments, the first wastewater zone is located above the first clean water zone along the height direction of the storage tank; The positions of the water level sensors at the middle and low water levels are located within the height range corresponding to the first clean water zone, while the positions of the water level sensors at the high water level are located within the height range corresponding to the first wastewater zone.

[0010] In some embodiments, the lawnmower cleaning base station further includes a transfer box, which is equipped with a second filter to divide the interior of the transfer box into a second sewage area and a second clean water area. The second sewage area is connected to the sewage collection point, and the second clean water area is connected to the first sewage area through a second pipeline. The lawnmower cleaning base station also includes a recovery pump electrically connected to the control component, the recovery pump being disposed in the second pipeline.

[0011] In some embodiments, the lawnmower cleaning base station further includes a wastewater discharge component connected to the transfer box.

[0012] In some embodiments, the lawnmower cleaning base station with multi-level water level detection function further includes a dwell sensor for detecting whether the lawnmower is located in the parking area, the dwell sensor being electrically connected to the control component.

[0013] In some embodiments, the liquid storage tank is provided with a water inlet assembly for connecting to an external water source, the water inlet assembly including a water inlet solenoid valve electrically connected to the control assembly.

[0014] This application provides a control method for a lawnmower cleaning base station with multi-water level detection function, which includes the following steps: S1. Lawn mower dwell detection: The position signal of the lawn mower is obtained through the dwell sensor to determine whether the lawn mower is in the dwelling area; S2, Water level range identification: The control component obtains the signal from the water level detection component and determines the current water level of the storage tank; S3. Automatic water injection: When the lawnmower is stationary and the current water level is lower than the high water level, the lawnmower cleaning station will perform a water replenishment step. S4. Circulating spray cleaning: When the lawnmower is stationary and the water level is at a high level or between a high and medium level or between a medium and low level, the lawnmower cleaning station performs cleaning and wastewater recycling steps. S5. Sewage Discharge and Termination: When the water level is lower than the low water level, the spray cleaning assembly is stopped, and the lawnmower cleaning base station performs the sewage discharge step.

[0015] The present invention provides a lawnmower cleaning base station with multi-level water level detection function. By setting a water level detection component inside the liquid storage tank, the control component can obtain the water level status inside the liquid storage tank, and then adaptively control the start, stop and working intensity of the spray cleaning component according to preset logic, thereby realizing intelligent cleaning process and water and energy saving. At the same time, the low water level signal can effectively prevent the spray pump from running dry and being damaged, and the high water level signal can prevent sewage overflow, significantly improving the safety and reliability of equipment operation, and providing a solid technical foundation for subsequent water recycling and fully automatic unattended operation. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a lawnmower cleaning base station with multi-water level detection function provided in one embodiment of this application; Figure 2 yes Figure 1 Enlarged schematic diagram of the structure at point A in the middle; Figure 3 This is a schematic diagram of the overall three-dimensional structure of the liquid storage tank provided in one embodiment of this application; Figure 4 yes Figure 3 A schematic diagram of the structure after being cut along the MM section line; Figure 5 yes Figure 3 A schematic diagram of the structure after being cut along the NN section line; Figure 6 This is a schematic diagram of the bottom structure of a lawnmower cleaning base station with multi-water level detection function provided in one embodiment of this application after removing part of the shell structure; Figure 7 yes Figure 6 A schematic diagram of the bottom planar structure; Figure 8This is a schematic diagram of the connection structure between the liquid storage tank, the transfer tank and the dust collection tank provided in one embodiment of the application; Figure 9 yes Figure 8 A structural diagram from another perspective; Figure 10 yes Figure 9 A schematic diagram of the structure of the intermediate liquid storage tank, transfer tank and dust collection box after being cut apart; Figure 11 yes Figure 1 A schematic diagram of the three-dimensional structure from another perspective; Figure 12 yes Figure 11 The schematic diagram shown is of a lawnmower cleaning base station with multi-water level detection function, cut along its centerline. Figure 13 yes Figure 12 Enlarged schematic diagram of the structure at point B.

[0018] Component descriptions in this application: 100, Base station body; 101, Parking area; 102, Sewage collection point; 103, Floating channel; 104, Water collection tank; 11, Liquid storage tank; 111, First filter element; 1101, First sewage area; 1102, First clean water area; 15, Charging connector; 12, Spray cleaning assembly; 121, Spray head; 122, Spray pump; 13, Inclined ramp; 14, Parking platform; 1401 1. Leakage tank; 200. Water level detection component; 21. Water level sensor; 300. Induction float; 400. Transfer box; 41. Second filter element; 401. Second sewage zone; 402. Second clean water zone; 403. Waste collection port; 500. First pipeline; 600. Second pipeline; 700. Sewage discharge component; 71. Dust collection box; 72. Fan; 73. Transfer box door; 74. Tilting mechanism; 800. Recovery pump. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0020] It should be noted that the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to direct setup or connection, or indirect setup or connection through centered components or centered structures.

[0021] Furthermore, in embodiments of this invention, terms such as "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer" are used to indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, or in a conventional placement or usage state. These terms are merely for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the structures, features, devices, or elements referred to must have a specific orientation or positional relationship, nor that they must be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0022] The various specific technical features and embodiments described in the detailed embodiments can be combined in any suitable manner without contradiction. For example, different implementation methods can be formed by combining different specific technical features / embodiments. In order to avoid unnecessary repetition, the various possible combinations of the various specific technical features / embodiments in this invention will not be described separately.

[0023] like Figure 1 , Figure 2 As shown, this embodiment provides a self-cleaning base station for a lawnmower robot with multi-level water level detection. The base station includes a base station body 100, a liquid storage tank 11, a spray cleaning assembly 12, a water level detection assembly 200, and a control assembly.

[0024] The base station body 100 has a parking area 101 for parking lawnmowers and a sewage collection point 102. Figure 12 , Figure 13 (As shown in the image). Specifically, the front of the base station body 100 is provided with a ramp 13 for the lawnmower robot to enter. The top of the ramp is connected to a horizontally set parking platform 14, which is the main body of the parking area 101. The planar dimensions of the parking platform 14 are slightly larger than the chassis projection of the lawnmower robot to ensure that the robot's bottom blade and wheels are within the platform area after it stops. The surface of the parking platform 14 has multiple drainage holes or elongated drainage channels 1401. The width of the drainage holes / channels is 3mm to 8mm, which allows grass clippings, mud, and sewage to pass through smoothly without clogging small foreign objects. A funnel-shaped water collection tank 104 is provided below the parking platform 14 to form the sewage collection position 102. When the spray cleaning assembly 12 washes the lawnmower, the water carrying dirt falls from the drainage holes on the surface of the parking platform 14 into the water collection tank 104. A coarse filter screen can be installed inside the water collection tank 104 to intercept large grass clippings and prevent blockage of subsequent components and pipelines.

[0025] like Figure 12 , Figure 13As shown, a charging connector 15 is provided at the end of the parking platform 14 (i.e., at the positioning block) or on the platform surface. The charging connector 15 can be an elastic telescopic metal probe that docks with the charging electrode plate at the tail of the lawnmower robot to achieve automatic charging.

[0026] like Figure 1 , Figure 2 As shown, the storage tank 11 is installed on the base station body 100; for example, it is located on the upper rear side of the base station, and its inlet is connected to the sewage collection position 102 for storing, filtering, and recycling cleaning water. The storage tank 11 has an internal filtration structure that can purify the recycled sewage for reuse. Specifically, as shown... Figure 2 , Figure 3 , Figure 4 As shown, the inlet of the liquid storage tank 11 is located near the top of the liquid storage tank 11. Wastewater enters the liquid storage tank 11 from the top and then flows through its internal filtration structure.

[0027] like Figure 1 , Figure 2 As shown, the spray cleaning assembly 12 is disposed on the base station body 100 and has a spray head 121 for spraying water toward the parking area 101, for cleaning the lawnmower robot parked in the area. The spray head 121 is connected to the liquid storage tank 11 to obtain cleaning water from the liquid storage tank 11.

[0028] like Figure 1 , Figure 2 As shown, a water level detection component 200 is disposed in the storage tank 11 to detect the water level inside the storage tank 11. In this embodiment, the water level detection component 200 includes at least three water level sensors 21 spaced apart along the height direction of the storage tank 11 on the side wall of the storage tank 11, corresponding to the high water level, medium water level, and low water level detection positions inside the storage tank 11, respectively. These sensors are used to sense changes in the water level inside the storage tank 11 in real time and output corresponding water level status signals.

[0029] The control component (such as a microcontroller or embedded controller) is electrically connected to multiple water level sensors 21 and the spray cleaning component 12 to receive signals from the multiple water level sensors 21 and determine the current water level range according to preset logic, thereby controlling the spraying action of the spray cleaning component 12.

[0030] In summary, the lawnmower cleaning base station with multi-level water level detection provided by this invention, by arranging at least three water level sensors 21 at intervals along the height direction on the side wall of the liquid storage tank 11, enables the control component to acquire high, medium, and low water level status in real time. This allows for adaptive control of the start / stop and working intensity of the spray cleaning component 12 based on preset logic, thereby achieving intelligent cleaning process and water and energy conservation. Simultaneously, the low water level signal effectively prevents the spray pump 122 from running dry and being damaged, while the high water level signal prevents sewage overflow, significantly improving the safety and reliability of equipment operation. Furthermore, this multi-level water level detection scheme has a simple structure, controllable cost, and is unaffected by impurities in the sewage, providing a solid technical foundation for subsequent water recycling and fully automated unattended operation.

[0031] Example 2 This embodiment further defines Embodiment 1 and describes the water level detection structure in detail.

[0032] To address the issues of sensor contamination and signal instability in wastewater environments, this base station employs a communicating vessel-type float sensing structure. Specifically, as follows... Figure 3 , Figure 4 , Figure 5 As shown, a floating channel 103 is provided on the side wall of the liquid storage tank 11. The floating channel 103 extends along the height direction of the liquid storage tank 11, and its bottom is connected to the interior of the liquid storage tank 11, forming a communicating vessel structure. The water level in the floating channel 103 is always consistent with the water level in the liquid storage tank 11.

[0033] Correspondingly, such as Figure 3 , Figure 4 , Figure 5 As shown, the lawnmower cleaning base station with multi-water level detection function provided in this application also includes a sensing float 300. The sensing float 300 is at least partially disposed in the floating channel 103 and can float along the floating channel 103 following the water level changes in the storage tank 11. The floating channel 103 has at least three predetermined positions spaced apart along its extension direction, corresponding to high water level, medium water level, and low water level, respectively. Multiple water level sensors 21 are correspondingly disposed near the predetermined positions and fixed to the outer or inner wall of the floating channel 103. When the sensing float 300 moves to a predetermined position with the water level, the water level sensor 21 can sense the sensing float 300 located at that position, thereby outputting a corresponding detection signal.

[0034] In a preferred embodiment, the water level sensor 21 is a Hall sensor, and the sensing float 300 includes a hollow float body with a permanent magnet encapsulated inside. The Hall sensor is non-contact and unaffected by water conductivity or contaminant adhesion, making it suitable for wastewater environments containing grass clippings and silt. When the float approaches the Hall sensor, the magnetic field of the permanent magnet triggers the sensor to output a high-level signal; when the float moves away, the signal returns to a low level. The control component can accurately determine the current water level range by reading the combined levels from multiple Hall sensors.

[0035] In summary, the non-contact detection structure using the floating channel 103 and a Hall sensor in conjunction with a magnetic float can accurately sense high, medium, and low water levels, completely avoiding direct contact between the sensor and sewage. It is unaffected by grass clippings, silt, and water conductivity, ensuring reliable detection and strong anti-pollution capabilities. At the same time, the structure is simple and inexpensive, providing a stable and accurate water level signal for base station adaptive control.

[0036] Example 3 This embodiment is a further improvement on the foregoing embodiment. This embodiment describes the internal filtration structure and spray pipeline of the liquid storage tank 11.

[0037] like Figure 3 , Figure 4 , Figure 5 As shown, a first filter element 111 (e.g., a fine filter screen) is installed inside the storage tank 11, dividing the interior of the storage tank 11 into a first wastewater zone 1101 and a first clean water zone 1102. Along the height direction of the storage tank 11, the first wastewater zone 1101 is located at the top, and the first clean water zone 1102 is located at the bottom. Wastewater enters the first wastewater zone 1101 from the top of the storage tank 11, and after passing through the first filter element 111, clean water enters the lower first clean water zone 1102, while dirt is trapped in the first wastewater zone 1101 or on the surface of the filter element.

[0038] The first water purification zone 1102 is connected to the spray head 121 via the first pipeline 500. The spray cleaning assembly 12 also includes a spray pump 122 electrically connected to the control assembly, and the spray pump 122 is located in the first pipeline 500. The control assembly can control the start and stop of the spray pump 122 according to the water level to prevent the pump from running dry.

[0039] Based on the above structure, this embodiment sets the installation height of each water level sensor 21 as follows: the predetermined positions of the medium water level sensor 21 and the low water level sensor 21 are located within the height range of the side wall corresponding to the first clean water zone 1102, used to monitor the available water volume in the clean water zone; the predetermined position of the high water level sensor 21 is located within the height range of the side wall corresponding to the first wastewater zone 1101, used to monitor the total capacity of the storage tank 11 and prevent overflow. This height distribution allows the control component to distinguish between the clean water storage volume and the total wastewater volume, providing a basis for refined water circulation control.

[0040] Example 4 To further improve water resource utilization and automatic sewage discharge capabilities, this embodiment adds a transfer box and related components.

[0041] In this embodiment, as Figure 6 , Figure 7 , Figure 9 , Figure 10 As shown, the lawnmower cleaning base station with multi-water level detection function provided in this application also includes a transfer box 400. A second filter element 41 (e.g., a coarse filter screen) is installed inside the transfer box 400, dividing the interior of the transfer box 400 into a second wastewater zone 401 and a second clean water zone 402. Wastewater falling after cleaning first enters the second wastewater zone 401, where larger solid debris (such as grass clippings and clods of soil) is intercepted by the second filter element 41, while wastewater containing fine particles enters the second clean water zone 402.

[0042] The second wastewater zone 401 is connected to the wastewater collection point 102 and is used to collect wastewater and debris from the cleaning process. The second clean water zone 402 is connected to the first wastewater zone 1101 via the second pipeline 600. In this embodiment, the lawnmower cleaning base station with multi-level detection function provided in this application also includes a recovery pump 800 electrically connected to the control components, and the recovery pump 800 is located in the second pipeline 600. When the recovery pump 800 is started, it pumps the coarsely filtered wastewater in the transfer box 400 back to the first wastewater zone 1101 in the storage tank 11 for further fine filtration and recycling.

[0043] Specifically, such as Figure 8 , Figure 11 , Figure 12 , Figure 13 As shown, the relay box 400 is installed on the base station body 100 and has a waste collection port 403 that is connected to the water collection tank 104 (described in Embodiment 1). Wastewater generated from cleaning the lawnmower can enter the relay box 400 through the waste collection port 403 under the action of gravity.

[0044] In addition, such as Figure 9 , Figure 10As shown, the lawnmower cleaning base station with multi-water level detection function provided in this application also includes a sewage discharge component 700, which is connected to the transfer box 400 for discharging sewage from the transfer box 400. In one specific implementation, the sewage discharge component 700 includes a dust collection box 71, a fan 72, and an openable and closable transfer box door 73 (controlled by an existing flipping mechanism 74, which is electrically connected to a control component). The transfer box door 73 is rotatably mounted on the base station body 100 or the transfer box 400 to close the sewage collection port 403 of the transfer box 400. The dust collection box 71 is connected to the transfer box 400 via an air duct, and the fan 72 is located inside the dust collection box 71 or in the air duct. When sewage discharge is required, the control unit closes the transfer box door 73 to seal the sewage collection port 403, and then starts the fan 72 to create a negative pressure in the transfer box 400, which sucks the solid sewage accumulated on the surface of the second filter element 41 into the dust collection box 71, thereby completing the automatic sewage discharge.

[0045] Example 5 To achieve fully automated, unattended operation, this embodiment adds a lawnmower dwell detection function and an automatic water intake function.

[0046] In this embodiment, as Figure 11 As shown, the lawnmower cleaning base station with multi-level water level detection provided in this application also includes a dwell sensor for detecting whether the lawnmower is located in the parking area 101. The dwell sensor is electrically connected to the control component. This dwell sensor can be integrated with the charging connector 15 in Embodiment 1 above, and the robot's position can be determined by detecting the conduction signal of the charging circuit; alternatively, a separate photoelectric sensor or micro switch can be used. The control component only initiates subsequent cleaning, sewage discharge, and other processes after receiving the robot's dwell signal.

[0047] In this embodiment, the storage tank 11 is equipped with a water inlet assembly (not shown in the figure) for connecting to an external water source (such as municipal tap water or an external water tank). The water inlet assembly includes a water inlet solenoid valve electrically connected to the control assembly and a water inlet pipeline. When the control assembly determines that water needs to be added (for example, the robot has been stationed and the water level is lower than the high water level), it opens the water inlet solenoid valve to inject clean water into the storage tank 11 until the water level reaches the high water level, and then closes the solenoid valve.

[0048] Example 6 Please see Figures 1-12 To understand, this embodiment provides a control method for a lawnmower cleaning base station with multi-water level detection function as described in any of the above embodiments. The control method includes the following steps: S1: Lawnmower Dwell Detection The location signal of the lawnmower is obtained by the stationary sensor to determine whether the lawnmower is in the parking area 101. If the lawnmower is detected to be parked, the system enters the cleaning preparation state; otherwise, the base station remains in standby or performs other maintenance operations.

[0049] S2: Water Level Range Identification The control component reads the level signals output by the three Hall sensors for high water level, medium water level, and low water level, and determines the current water level to be in one of the following four water level ranges based on the level combination: above the high water level, between the high water level and the medium water level, between the medium water level and the low water level, or below the low water level.

[0050] The specific judgment logic is as follows (H, M, and L represent the level signals output by the three Hall sensors for high water level, medium water level, and low water level, respectively): If H=1, M=1, L=1, then it is determined as "exceeding the high water level"; If H=0, M=1, L=1, then it is determined to be "between high water level and medium water level"; If H=0, M=0, L=1, then it is determined to be "between the middle and low water levels"; If H=0, M=0, L=0, then it is determined to be "below the low water level".

[0051] S3: Automatic water filling When the lawnmower is stationary and the current water level is below the high water level (i.e., between high and medium water levels, between medium and low water levels, or below low water level), the control unit opens the water inlet solenoid valve to fill the storage tank 11 with water. As the water level rises, when the medium water level sensor is triggered, and finally the high water level sensor is triggered (H=1), the control unit closes the water inlet solenoid valve and stops filling the tank. If the robot is not stationary, water will not be added even if the water level is low, to avoid unnecessary waste of resources.

[0052] S4: Circulating spray cleaning When the lawnmower is stationary and the water level is high, between high and medium, or between medium and low, the spray cleaning assembly 12 is activated to spray the lawnmower. At the same time, the recovery pump 800 is activated to pump the wastewater collected in the transfer box 400 back to the first wastewater zone 1101 of the storage tank 11. After fine filtration, the wastewater enters the first clean water zone 1102 and is supplied to the spray cleaning assembly 12 again, forming a water circulation cleaning process.

[0053] During this process, the control components continuously monitor water level changes. If the water level gradually drops from the middle-high level to below the low level, it indicates that the circulating water has been basically exhausted. At this point, the control components determine that the current cleaning phase has ended and transition to the sewage discharge phase.

[0054] S5: Discharge and Completion When the water level is below the low water level, the control unit stops the spray cleaning unit 12 and starts the sewage discharge unit 700 to discharge the sludge in the transfer box 400, removing solid sludge and residual sewage. The sewage discharge action includes: closing the transfer box door 73, starting the blower 72 to suck solid sludge into the dust collection box 71, and continuing to run the recovery pump 800 until the sewage in the transfer box 400 is emptied.

[0055] After the wastewater discharge is completed, if the robot remains stationary, the control unit can briefly restart the recovery pump 800 and observe whether the water level rises again. If the water level rises above the middle level, it indicates that there is still a significant amount of residual water or debris on the robot chassis (due to the large amount of debris on the lawnmower, slow wastewater filtration and descent). In this case, the system will automatically return to step S3 to perform water injection and circulating spray cleaning again. This verification process can be repeated multiple times until the water level no longer rises significantly, ensuring thorough cleaning.

[0056] After the robot automatically leaves the base station, the stationary sensor signal disappears, and the control component can perform the final cleaning action (empty the liquid storage tank 11 and the transfer box 400) and wait for the next robot to enter the station.

[0057] To facilitate understanding of the control logic of the above control method, the preset water level state within the control component and the linkage relationship between each execution component are shown in the following table: Through the above control methods, the base station can autonomously decide the timing and duration of cleaning, circulation, and sewage discharge based on multi-level water level feedback, realizing a fully automatic cleaning process that is completely adaptive, water-saving, energy-saving, and unattended.

[0058] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions or improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A lawnmower cleaning base station with multi-water level detection function, characterized in that, include: The main body of the base station has a parking area for mowers and a sewage collection point; A liquid storage tank is installed in the main body of the base station and is connected to the sewage collection position. A first filter element is installed inside the liquid storage tank. A spray cleaning assembly is installed on the main body of the base station and has a spray head, which is connected to the liquid storage tank; A water level detection component is installed in the liquid storage tank to detect the water level height; A control component is electrically connected to the water level detection component and the spray cleaning component to receive signals from the water level detection component and control the water spraying action of the spray cleaning component according to preset logic.

2. The lawnmower cleaning base station with multi-water level detection function as described in claim 1, characterized in that, The water level detection component includes at least three water level sensors, and the plurality of water level sensors are spaced apart along the height direction of the liquid storage tank to correspond to the high water level, medium water level and low water level of the liquid storage tank respectively.

3. The lawnmower cleaning base station with multi-water level detection function as described in claim 2, characterized in that, The side wall of the liquid storage tank is provided with a floating channel, which extends along the height direction of the liquid storage tank and communicates with the liquid storage tank to form a communicating vessel structure. The water level detection component also includes a sensing float, which is disposed in the floating channel; The floating channel has at least three predetermined positions spaced apart along its extension direction, and a plurality of water level sensors are positioned close to the predetermined positions in a corresponding manner.

4. The lawnmower cleaning base station with multi-water level detection function as described in claim 3, characterized in that, The first filter element divides the interior of the liquid storage tank into a first wastewater zone and a first clean water zone, and the first clean water zone is connected to the spray head through a first pipeline; The spray cleaning assembly also includes a spray pump electrically connected to the control assembly, and the spray pump is disposed in the first pipeline.

5. The lawnmower cleaning base station with multi-water level detection function as described in claim 4, characterized in that, Along the height direction of the storage tank, the first wastewater zone is located above the first clean water zone; The positions of the water level sensors at the middle and low water levels are located within the height range corresponding to the first clean water zone, while the positions of the water level sensors at the high water level are located within the height range corresponding to the first wastewater zone.

6. The lawnmower cleaning base station with multi-water level detection function as described in claim 4, characterized in that, The lawnmower cleaning base station also includes a transfer box, which is equipped with a second filter to divide the interior of the transfer box into a second sewage area and a second clean water area. The second sewage area is connected to the sewage collection point, and the second clean water area is connected to the first sewage area through a second pipeline. The lawnmower cleaning base station also includes a recovery pump electrically connected to the control component, the recovery pump being disposed in the second pipeline.

7. The lawnmower cleaning base station with multi-water level detection function as described in claim 6, characterized in that, The lawnmower cleaning base station also includes a sewage discharge component, which is connected to the transfer box.

8. The lawnmower cleaning base station with multi-water level detection function as described in any one of claims 1 to 7, characterized in that, The lawnmower cleaning base station with multi-level water level detection also includes a dwell sensor for detecting whether the lawnmower is located in the parking area, and the dwell sensor is electrically connected to the control component.

9. The lawnmower cleaning base station with multi-water level detection function as described in any one of claims 1 to 7, characterized in that, The liquid storage tank is equipped with a water inlet assembly for connecting to an external water source, and the water inlet assembly includes a water inlet solenoid valve electrically connected to the control assembly.

10. A control method for a lawnmower cleaning base station with multi-water level detection function as described in any one of claims 1 to 9, characterized in that, Includes the following steps: S1. Lawn mower dwell detection: The position signal of the lawn mower is obtained through the dwell sensor to determine whether the lawn mower is in the dwelling area; S2, Water level range identification: The control component obtains the signal from the water level detection component and determines the current water level of the storage tank; S3. Automatic water injection: When the lawnmower is stationary and the current water level is lower than the high water level, the lawnmower cleaning station will perform a water replenishment step. S4. Circulating spray cleaning: When the lawnmower is stationary and the water level is at a high level or between a high and medium level or between a medium and low level, the lawnmower cleaning station performs cleaning and wastewater recycling steps. S5. Sewage Discharge and Termination: When the water level is lower than the low water level, the spray cleaning assembly is stopped, and the lawnmower cleaning base station performs the sewage discharge step.

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