A greenhouse roller shutter control system and control device

Abstract

A greenhouse curtain control system and control device, comprising: a main control board; a limit switch, electrically connected with the main control board, the main control board is set to be able to control the on-off of the power transmission line for supplying power to the stroke device according to the signal of the limit switch; a limit transmission member, one end of which is connected with the limit switch, and the other end is set to be connected with the stroke device or set on the movement path of the stroke device, the limit transmission member is set to be able to trigger the limit switch when the stroke device reaches the predetermined position to make the main control board disconnect the power transmission line.

Description

Technical Field

[0001] This article relates to smart greenhouse technology, specifically a greenhouse roller shutter control system and control device. Background Technology

[0002] The smart greenhouse roller shutter controller is the main equipment used in smart greenhouses to control the temperature environment of the greenhouse. In the vast northern regions, solar greenhouses and winter-warm steel-framed film greenhouses rely on controlling the opening and closing status and position of the greenhouse quilts to provide functions such as heat preservation, lighting, ventilation, and shading.

[0003] However, the greenhouse curtain control systems currently available on the market have the following problems: the curtain machine relies solely on limit switches installed at multiple locations, such as the roof and front of the greenhouse, to control the rolling of the curtain machine. The installation of these limit switches at multiple locations, such as the roof and front of the greenhouse, results in a large amount of on-site installation work, requiring the installation of limit switch mounting brackets, the installation of expansion bolts, and the installation of upper and lower limit signal lines, which leads to high installation costs.

[0004] In addition, if the limit switch malfunctions or is not installed securely and moves, it can cause the quilt to roll up excessively. Summary of the Invention

[0005] This application provides a greenhouse curtain control system and control device, which can effectively prevent over-rolling accidents.

[0006] This application provides a control device, including: a main control board; a limit switch electrically connected to the main control board, the main control board being configured to control the on / off state of a power transmission line supplying power to a travel device according to the signal from the limit switch; and a limit transmission member, one end of which is connected to the limit switch, and the other end of which is connected to the travel device or disposed on the movement path of the travel device, the limit transmission member being configured to trigger the limit switch to cause the main control board to disconnect the power transmission line when the travel device reaches a predetermined position.

[0007] In one exemplary embodiment, the control device further includes an elastic element and a fixing frame, one end of the elastic element being fixed to the fixing frame and the other end being connected to the limiting transmission member;

[0008] The movable contact of the limit switch is positioned between the two ends of the elastic element, and the limit transmission member is configured to trigger the limit switch by driving the movable contact through the elastic element when the travel device reaches the predetermined position.

[0009] In an exemplary embodiment, the limiting transmission member includes a first limiting transmission member and a second limiting transmission member. One end of both the first and second limiting transmission members is connected to the limit switch, and the other end is configured to be connected to the travel device and disposed in the motion path of the travel device, respectively.

[0010] In an exemplary embodiment, the first limiting transmission member is a first limiting pull rope, the second limiting transmission member is a second limiting pull rope, one end of the second limiting pull rope is connected to the limit switch, and the first limiting pull rope is connected to the second limiting pull rope.

[0011] In an exemplary embodiment, the first limiting pull rope is a wire, one end of the first limiting pull rope is electrically connected to the main control board, the other end of the first limiting pull rope is electrically connected to a first position sensor installed on the travel device, and the middle part of the first limiting pull rope is connected to the second limiting pull rope.

[0012] In one exemplary embodiment, the control device further includes: a switch disposed on the transmission line, the switch configured to control the on / off state of the transmission line; and

[0013] A power-off transmission component, one end of which is connected to the switch, and the other end of which is configured to be connected to the travel device or disposed on the movement path of the travel device. The power-off transmission component is configured to trigger the switch to disconnect the power transmission line when the travel device exceeds the predetermined position.

[0014] In one exemplary embodiment, the control device further includes: a switch disposed on the transmission line, the switch configured to control the on / off state of the transmission line; and

[0015] A power-off transmission component, one end of which is connected to the switch, and the other end of which is connected to the limiting transmission component or the elastic element. The power-off transmission component is configured to trigger the switch to disconnect the power transmission line when the travel device exceeds the predetermined position.

[0016] In one exemplary embodiment, the circuit breaker is an air switch, and the power-off transmission component is a power-off pull rope.

[0017] In one exemplary embodiment, the control device further includes a mounting base plate, on which the main control board, limit switch, fixing frame and circuit breaker are all mounted.

[0018] This application provides a greenhouse curtain control system, including: curtain rolling equipment, and a control device as described in any of the above embodiments;

[0019] The roller blind rolling equipment includes a roller blind machine and a drive rod that drives the roller blind machine to rise and fall.

[0020] The limiting transmission component of the control device is connected to or installed on the moving path of the roller shutter machine. The main control board of the control device is configured to disconnect the power transmission line supplying power to the roller shutter laying equipment when the driving rod moves to a predetermined position and triggers the limit switch of the control device.

[0021] In one exemplary embodiment, the predetermined positions of the drive lever include a first extreme high position and a first extreme low position;

[0022] The first limiting transmission component of the limiting transmission component is connected to the driving rod and is configured to trigger the limiting switch when the driving rod reaches the first extreme high position.

[0023] The second limiting transmission component of the limiting transmission component is disposed on the moving path of the rolling shutter machine and connected to the frame of the greenhouse. The second limiting transmission component is configured to trigger the limiting switch when the driving rod reaches the first extreme low position.

[0024] In one exemplary embodiment, the greenhouse curtain control system further includes a first position sensor disposed on the drive rod, the first position sensor being configured to detect the position of the drive rod;

[0025] The main control board is electrically connected to the first position sensor and is configured to control the on / off state of the power transmission line based on the detection result of the first position sensor.

[0026] In one exemplary embodiment, the first position sensor includes one or more of an angle sensor, a distance sensor, and a wireless positioning and ranging sensor.

[0027] In an exemplary embodiment, the drive rod includes a vertical support rod and a swing rod rotatably connected to the vertical support rod, and the control device is disposed on the vertical support rod;

[0028] The first position sensor is an angle sensor and is located on the swing rod. The first limiting transmission component is a wire, and its two ends are electrically connected to the angle sensor and the main control board, respectively.

[0029] In one exemplary embodiment, multiple roller blinds are provided, and the multiple roller blinds are sequentially mounted on the drive rod. The rollers of two adjacent roller blinds are configured to have a height difference, and the roller blinds on the rollers of two adjacent roller blinds are configured to overlap at the edges.

[0030] In an exemplary embodiment, a second position sensor is provided on the roller or motor shaft of the roller shutter machine, and the second position sensor is electrically connected to the main control board.

[0031] Compared with related technologies, the embodiments of this application set limit switches and limit transmission components in the control device. When the travel device (such as a roller shutter rolling device) reaches a specific position, it will drive the limit transmission component to trigger the limit switch. Then the limit switch sends a signal to the main control board of the control device to disconnect the power supply line to the travel device, thereby protecting the travel device, saving installation difficulty and greatly reducing costs.

[0032] In one exemplary embodiment, the greenhouse shutter control system of this application provides triple protection against over-rolling of the shutter laying equipment:

[0033] The first layer of protection is the limit protection for the first position sensor, a protection function for the first position sensor under normal operating conditions of the controller mainboard. Taking the first position sensor as an angle sensor as an example, the user can set the maximum angle of the roller shutter through the control interface. This maximum angle is less than the control angle of the first limit pull cord (upper limit pull cord). Simultaneously, the user can set the minimum angle of the roller shutter, which is greater than the minimum angle triggered by the first limit pull cord (lower limit pull cord). When the roller shutter is operating normally, the control device continuously collects information from the first position sensor and compares it with the set maximum and minimum angles. When the set values ​​are reached, the power supply to the motor is cut off. When the first position sensor malfunctions, and the control device detects an abnormal rate of change in the position signal that is less than a certain set value, the power supply is cut off, and a detailed fault report for the first position sensor M is sent to the platform.

[0034] The second layer of protection consists of limit ropes and limit switches. When the main control board of the control device malfunctions and cannot control the motor, the limit ropes drive the power-off ropes to mechanically pull the limit switches, disconnecting the power supply circuit of the main control board and thus cutting off the power supply to the motor.

[0035] The third layer of protection consists of limit protection for the circuit breaker and the power disconnect cord. Taking the circuit breaker as an example, when the limit switch also fails, the limit cord continues to move a certain distance, forcibly disconnecting the circuit breaker tripping trigger wire to supply power to the control device.

[0036] The greenhouse curtain control system of this application embodiment effectively solves the problem of over-rolling and achieves precise control of the opening and closing position of the curtain, ensuring refined control of greenhouse temperature. The integrated position and limit switches are integrated into the controller, achieving professional installation-free operation and greatly improving the reliability, accuracy and intelligence of use.

[0037] In an exemplary embodiment, the greenhouse curtain control system of this application adopts a method of interconnecting two curtain machines and using the wireless communication function of the control device to read the position of the other party's second position sensor to ensure that the quilt position of the first curtain machine is always higher than the quilt position of the second curtain machine by more than 0.30 meters, thereby preventing the two curtain machines from fighting or getting stuck.

[0038] In one exemplary embodiment, the control device of this application, by incorporating a spring element, ensures reliable reset of the limit switch and prevents malfunction of the limit switch caused by strong winds blowing the pull cord. This ensures the reliability of the roller shutter control system.

[0039] Other features and advantages of this application will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the application. Other advantages of this application can be realized and obtained by means of the solutions described in the description and the accompanying drawings. Attached Figure Description

[0040] The accompanying drawings are used to provide an understanding of the technical solutions of this application and constitute a part of the specification. They are used together with the embodiments of this application to explain the technical solutions of this application and do not constitute a limitation on the technical solutions of this application.

[0041] Figure 1 This is a schematic diagram of a greenhouse roller shutter control system according to an embodiment of this application;

[0042] Figure 2 This is a schematic diagram of the control device according to an embodiment of this application. Detailed Implementation

[0043] This application describes several embodiments, but these descriptions are exemplary and not restrictive, and it will be apparent to those skilled in the art that many more embodiments and implementations are possible within the scope of the embodiments described herein. Although many possible combinations of features are shown in the drawings and discussed in the detailed description, many other combinations of the disclosed features are also possible. Unless specifically limited, any feature or element of any embodiment may be used in combination with, or may replace, any feature or element of any other embodiment.

[0044] This application includes and contemplates combinations of features and elements known to those skilled in the art. The embodiments, features, and elements disclosed in this application may also be combined with any conventional features or elements to form a unique inventive scheme as defined by the claims. Any feature or element of any embodiment may also be combined with features or elements from other inventive schemes to form another unique inventive scheme as defined by the claims. Therefore, it should be understood that any feature shown and / or discussed in this application may be implemented individually or in any suitable combination. Therefore, the embodiments are not limited except by the limitations imposed by the appended claims and their equivalents. Furthermore, various modifications and changes may be made within the scope of the appended claims.

[0045] Furthermore, in describing representative embodiments, the specification may have presented methods and / or processes as a specific sequence of steps. However, the method or process should not be limited to the specific order of steps described herein, to the extent that it does not depend on such a specific order. As will be understood by those skilled in the art, other sequences of steps are also possible. Therefore, the specific order of steps set forth in the specification should not be construed as a limitation of the claims. Moreover, the claims concerning the method and / or process should not be limited to the steps performed in the written order, and those skilled in the art will readily understand that these orders can be varied and still remain within the spirit and scope of the embodiments of this application.

[0046] like Figure 1-2 As shown in the figure, this application provides a greenhouse curtain control system, including a curtain rolling device 100 and a control device 200.

[0047] like Figure 1 As shown, the roller blind rolling equipment 100 includes a roller blind machine and a drive device for moving the roller blind machine. The drive device includes a drive rod 11 and a power mechanism (not shown) for moving the drive rod 11. The drive rod 13 includes a vertical support rod 111 and a swing rod 112 rotatably connected to the vertical support rod 111.

[0048] like Figure 2 As shown, the control device 200 includes a main control board 21, a limit switch 22, and a limit transmission component 23. The limit switch 22 is electrically connected to the main control board 21. The main control board 21 is configured to control the on / off state of the power transmission line A that supplies power to the travel device according to the signal from the limit switch 22. In this embodiment, the travel device is a roller shutter laying device 100.

[0049] One end of the limit transmission component 23 is connected to the limit switch 22, and the other end is configured to be connected to or positioned on the movement path of the roller blind laying device 100. The limit transmission component 22 is configured to trigger the limit switch 22 when the roller blind laying device 100 reaches a predetermined position, thereby causing the main control board 21 to disconnect the power transmission line A. When the limit transmission component 23 triggers the limit switch 22, the limit switch 22 sends a pulse signal to the main control board 21, and the main control board 21 disconnects the power transmission line A upon receiving the pulse signal.

[0050] In this embodiment, the limiting transmission component 23 of the control device 200 is connected to or installed on the moving path of the roller blind laying equipment 100. The main control board 21 of the control device 200 is configured to disconnect the power transmission line A that supplies power to the roller blind laying equipment 100 when the driving rod 11 moves to a predetermined position and triggers the limit switch 22 of the control device 200, thereby enabling power outage protection for the travel equipment.

[0051] like Figure 1 , Figure 2 As shown, the limiting transmission component 23 includes a first limiting transmission component 231 and a second limiting transmission component 232. One end of both the first limiting transmission component 231 and the second limiting transmission component 232 is connected to the limit switch 22, and the other end is respectively connected to the curtain rolling device 100 and disposed on the movement path of the curtain rolling device 100. In this embodiment, the other end of the second limiting transmission component 232 is disposed on the frame of the greenhouse 300.

[0052] In this embodiment, the predetermined positions of the drive rod 11 include a first extreme high position and a first extreme low position. The first limiting transmission member 231 of the limiting transmission member 23 is connected to the drive rod 11 and is configured to trigger the limit switch 22 when the drive rod 11 reaches the first extreme high position. The second limiting transmission member 232 of the limiting transmission member 23 is disposed on the moving path of the roller shutter machine and connected to the frame of the greenhouse 300. The second limiting transmission member 232 is configured to trigger the limit switch 22 when the drive rod 11 reaches the first extreme low position.

[0053] In this embodiment, when the first extreme high position and the first extreme low position are reached, the limit transmission member 23 is pulled by the roller blind rolling equipment 100, triggering the limit switch 22 to disconnect the power transmission line A, thereby achieving over-rolling protection for the roller blind rolling equipment 100.

[0054] In this embodiment, the first limiting transmission component 231 is a first limiting pull rope, and the second limiting transmission component 232 is a second limiting pull rope. One end of the second limiting pull rope is connected to the limit switch 22, and the first limiting pull rope is connected to the second limiting pull rope and indirectly connected to the limit switch 22, thereby reducing the use of rope and reducing false triggering caused by entanglement.

[0055] In one exemplary embodiment, the limiting transmission member 23 may also be a connecting rod.

[0056] like Figure 1 As shown, the roller shutter control system also includes a first position sensor M mounted on the drive rod 11. The first position sensor M is configured to detect the position of the drive rod 11, such as height, angle, and opening degree. The main control board 21 is electrically connected to the first position sensor M and is configured to control the on / off state of the power transmission line A based on the detection result of the first position sensor M.

[0057] The first position sensor M may include one or more of an angle sensor, a distance sensor, and a wireless positioning and ranging sensor. By setting the first position sensor M, the control device 200 can control the roller shutter machine to stop or start at any position.

[0058] The greenhouse curtain control system of this application embodiment can set position control strategies under different conditions by setting a first position sensor M. The opening degree of the quilt is controlled by the temperature feedback of the greenhouse, and the greenhouse temperature is collected to determine the opening and closing degree of the quilt. The system control platform can be accessed in advance via a display terminal to set the temperature opening curve for a certain period, and dynamic temperature opening control is achieved through controller self-learning. The display terminal can be used to set the duration of the quilt covering the upwind vent in the morning, the duration of the quilt being released in the morning, the start and end times of covering the vent in the afternoon, and the time of closing the quilt in the evening for a certain period (ten days, month). Alternatively, a combined control method of time period and temperature can be used to achieve the opening and closing position control of the greenhouse curtain machine.

[0059] The predetermined positions of the drive rod 11 in this embodiment of the application further include a second extreme high position and a second extreme low position. When the first position sensor M senses the second extreme high position or the second extreme low position of the drive rod 11, the control device 200 controls the drive rod 11 to stop moving. The second extreme high position is lower than the first extreme high position, and the second extreme low position is higher than the first extreme low position.

[0060] For example, when the first position sensor M is an angle sensor, the user can set the maximum angle of the roller shutter through the control interface. This maximum angle is less than the control angle of the first limit cord (upper limit cord). Simultaneously, a minimum angle of the roller shutter is set, which is greater than the minimum angle triggered by the second limit cord (lower limit cord). When the roller shutter is working normally, the control device 200 continuously collects information from the first position sensor M and compares it with the set maximum and minimum angles. When the set values ​​are reached, the power supply line A is cut off. When the first position sensor M malfunctions, and the control device 200 detects an abnormal rate of change in the position signal that is less than a certain set value, it cuts off the power supply line A and simultaneously reports the fault details of the first position sensor M to the platform.

[0061] In this embodiment, the first limiting pull rope is a wire. One end of the first limiting pull rope is electrically connected to the main control board 21, and the other end of the first limiting pull rope is electrically connected to the first position sensor M installed on the roller shutter laying equipment 100. The first position sensor M is connected to the control device 200 through the first limiting pull rope, thereby eliminating the need to design extra wires to connect the first position sensor M and the control device 200, further reducing wiring complexity.

[0062] In this embodiment of the application, by setting a first position sensor M, the greenhouse curtain control system can set the opening degree of the quilt arbitrarily according to the greenhouse temperature, season, and different time periods. It can set at least 5 opening and closing position control conditions within a day, which can be the start time of opening to a certain position, the opening and closing position of a certain temperature range in the greenhouse within a certain time period, and temperature position feedback control.

[0063] This embodiment of the application connects multiple limit ropes to a single limit switch 22, enabling the over-rolling protection of the rolling shutter machine at multiple different extreme positions to be achieved with only one limit switch 22, thereby reducing installation difficulty and saving costs.

[0064] like Figure 2 As shown, the control device 200 of this embodiment further includes a spring element 25 and a fixing frame 26. One end of the spring element 25 is fixed to the fixing frame 26, and the other end is connected to the limit transmission member 23. The movable contact 220 of the limit switch 22 is positioned between the two ends of the elastic element 25. The limit transmission member 23 is configured such that when the drive rod 11 of the roller blind laying device 100 reaches a predetermined position, it drives the movable contact 220 to move through the elastic element 25 to trigger the limit switch 22.

[0065] The control device 200 of this embodiment ensures the reliable reset of the limit switch 22 by incorporating a spring element 25, while also preventing the limit switch 22 from malfunctioning due to strong winds blowing the pull cord. This ensures the reliability of the roller shutter control system.

[0066] like Figure 2 As shown, the control device 200 in this embodiment further includes a switch 27 and a power-off transmission member 28 disposed on the transmission line A. The switch 27 is configured to control the on / off state of the transmission line A upstream of the main control board 21. In this embodiment, the switch 27 may be an air switch, and the power-off transmission member 28 may be a power-off pull rope.

[0067] In one exemplary embodiment, one end of the power-off actuator 28 is connected to the switch 27, and the other end is configured to be connected to or positioned on the movement path of the roller blind laying device 100. The power-off actuator 28 is configured to trigger the switch 28 to disconnect the power transmission line A when the roller blind laying device 100 exceeds a predetermined position.

[0068] In an exemplary embodiment, one end of the power-off transmission member 28 is connected to the switch 27, and the other end is configured to be connected to the limit transmission member 23 or the elastic element 25. The power-off transmission member 28 is configured to trigger the switch 28 to disconnect the power transmission line A when the drive rod 11 of the roller blind laying device 100 exceeds a predetermined position.

[0069] For example, when the drive rod 11 is above the first predetermined high position for a certain period of time, the power-off transmission member 28 drives the circuit breaker 27 to operate, triggering the circuit breaker 28 to disconnect the power transmission line A. When the drive rod 11 is below the first predetermined low position for a certain period of time, the power-off transmission member 28 drives the circuit breaker 27 to operate, triggering the circuit breaker 28 to disconnect the power transmission line A.

[0070] The greenhouse curtain control system of this application integrates the limit transmission component 23 and the limit switch 22 into the control device 200, and simultaneously realizes the limit protection of the limit switch 22 and the mechanical tripping of the circuit breaker 280, which makes on-site installation simple and greatly reduces the risk and cost of over-rolling.

[0071] like Figure 2 As shown, the control device 200 in this embodiment of the application also includes a mounting base 24, and the main control board 21, limit switch 22, fixing frame 26 and switch 27 are all mounted on the surface of the mounting base 24.

[0072] The greenhouse curtain control system of this application provides triple over-roll protection:

[0073] The first layer of protection is the limit protection for the first position sensor M, which is a protection function for the first position sensor M under normal operating conditions of the controller mainboard 1. Taking the first position sensor M as an angle sensor as an example, the user can set the maximum angle limit of the roller shutter machine through the control interface. This maximum angle is less than the control angle of the first limit pull cord (upper limit pull cord). At the same time, the user can set the minimum angle of the roller shutter machine, which is greater than the minimum angle triggered by the first limit pull cord (lower limit pull cord). When the roller shutter machine is working normally, the control device 200 continuously collects the information of the first position sensor M and compares it with the set maximum and minimum angles. When the set value is reached, the power supply to the motor is cut off. When the first position sensor M malfunctions, and the control device 200 collects an abnormal rate of change of the position signal that is less than a certain set value, it cuts off the power transmission line A and simultaneously reports the detailed fault information of the first position sensor M to the platform.

[0074] The second layer of protection is the limit protection of the limit transmission component 23 and the limit switch 22. When the main control board 21 of the control device 200 fails and cannot control the motor, the limit rope will mechanically pull the limit switch 22, disconnecting the power supply circuit of the main control board 21 of the control device 200, thereby cutting off the power transmission line A.

[0075] The third layer of protection consists of the limit protection of the circuit breaker 27 and the power-off pull rope 28. Taking the circuit breaker 27 as an example, when the limit switch 22 also fails, the limit pull rope 23 continues to move a certain distance (e.g., within 2 cm), and the limit pull rope 23 drives the power-off pull rope 28 to pull the circuit breaker trip, triggering the iron wire to forcibly disconnect the power supply line A to the control device 200, which is generally a 380V power supply.

[0076] The main control board 21 of the control device 200 in this embodiment has interfaces for remote communication, position signal acquisition, temperature signal acquisition, limit switch signal acquisition, etc., supports 4G, various small wireless (Bluetooth, LoRa) and other communication methods, and has local edge intelligent computing and storage functions.

[0077] like Figure 1As shown in this embodiment, multiple roller shutter machines are provided, and these machines are sequentially mounted on the drive rod 11. The rollers of adjacent roller shutter machines are arranged with a height difference, and the roller shutters on the rollers of adjacent roller shutter machines are arranged with overlapping edges. (Please confirm if the description is correct.)

[0078] In this embodiment, the roller blind machine includes two parts, namely a first roller blind machine and a second roller blind machine. The drive rod 11 is connected to the first roller blind machine and the second roller blind machine, and can drive the first roller blind machine and the second roller blind machine to move.

[0079] The first roller blind machine includes a first roller 121 for rolling up the roller blind and a first motor (not shown) for rotating the first roller 121. The second roller blind machine includes a second roller (not shown) for rolling up the roller blind and a second motor (not shown) for rotating the second roller.

[0080] The first roller 122 is used to roll up the first roller blind 122, and the second roller 132 is used to roll up the second roller blind 132. The first roller blind 122 and the second roller blind 132 are generally covering layers such as quilts. To ensure that the entire ceiling surface is covered, the first roller blind 122 and the second roller blind 132 have overlapping sections.

[0081] Generally, for a single greenhouse longer than 120 meters, at least two roller shutter machines should be installed. The quilts on the two rollers (11) will overlap by about 1.5 meters. This is to ensure that both sets of quilts completely cover the entire greenhouse surface, preventing gaps where the quilts meet. To prevent the two rollers from interfering or jamming, one roller should have its quilt rolled up at least 0.3 meters higher than the other.

[0082] Both roller blinds are equipped with a second position sensor (not shown) on their rollers or motor shafts, and the second position sensor is communicatively connected to the control device 200. The second position sensors on the two roller blinds read each other's positions to ensure that the quilt roll-up position of the first roller blind is at least 0.3 meters higher than the quilt roll-up position of the second roller blind.

[0083] When the roller blind installation equipment 100 is installed, the first roller blind machine is the main roller blind machine and the second roller blind machine is the slave roller blind machine. After the main roller blind machine reaches the set position, the second position sensor detects that the slave roller blind machine has moved to a position more than 0.3 meters lower than the main roller blind machine.

[0084] When the quilt needs to be closed to a certain position, the secondary roller shutter first closes the quilt to the set position. Then, the control device, via a second position sensor, controls the main roller shutter to close the quilt to approximately 0.3 meters above the secondary roller shutter. Alternatively, it can be set so that when opening the quilt, the secondary roller shutter only starts opening the quilt when the difference in opening degree between the secondary and main roller shutters exceeds a certain set value. The logic is reversed when closing the quilt.

[0085] In the greenhouse rolling curtain control system according to the embodiment of the present application, two rolling curtain controls are set to be mutually related, and the position of the second position sensor of the other party is read by using the wireless communication function of the control device 200, so as to ensure that the position of the cotton quilt of the first rolling machine is always more than 0.30 meters higher than the position of the cotton quilt of the second rolling machine.

[0086] The greenhouse rolling curtain control system according to the embodiment of the present application effectively solves the problem of overwinding, and at the same time realizes precise control of the opening and closing position of the cotton quilt, ensures the refined control of the greenhouse temperature control, integrates the integrated position and limit switch into the controller, realizes installation without professional skills, and greatly improves the reliability, precision and intelligence of use.

[0087] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "upper", "lower", "one side", "the other side", "one end", "the other end", "edge", "opposite", "four corners", "perimeter", and "the structure of the character 'kou'" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the structure referred to has a specific orientation, is constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention.

[0088] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "connection", "direct connection", "indirect connection", "fixed connection", "installation", and "assembly" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; the terms "installation", "connection", and "fixed connection" can be directly connected, or indirectly connected through an intermediate medium, and can be the internal connection of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0089] It will be understood by those skilled in the art that all or some of the steps, systems, or apparatuses disclosed above, and their functional modules / units, can be implemented as software, firmware, hardware, or suitable combinations thereof. In hardware implementations, the division between functional modules / units mentioned above does not necessarily correspond to the division of physical components; for example, a physical component may have multiple functions, or a function or step may be performed collaboratively by several physical components. Some or all components may be implemented as software executed by a processor, such as a digital signal processor or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit (ASIC). Such software may be distributed on a computer-readable medium, which may include computer storage media (or non-transitory media) and communication media (or transient media). As is known to those skilled in the art, the term computer storage media includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information (such as computer-readable instructions, data structures, program modules, or other data). Computer storage media include, but are not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disc (DVD) or other optical disc storage, magnetic cartridges, magnetic tape, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and can be accessed by a computer. Furthermore, it is well known to those skilled in the art that communication media typically contain computer-readable instructions, data structures, program modules, or other data in modulated data signals such as carrier waves or other transmission mechanisms, and may include any information delivery medium.

Claims

1. A greenhouse roller shutter control system, characterized in that, The application relates to a control device for a curtain rolling device. The curtain rolling device comprises a curtain machine and a driving rod for driving the curtain machine to move up and down. The control device comprises: a main control board; a limit switch electrically connected to the main control board, the main control board being configured to control the on-off of a power supply line for supplying power to a stroke device according to a signal of the limit switch; a limit transmission member, one end of which is connected to the limit switch and the other end of which is configured to be connected to the stroke device or arranged on a movement path of the stroke device, the limit transmission member being configured to trigger the limit switch to make the main control board disconnect the power supply line when the stroke device reaches a predetermined position. The limit transmission member of the control device is connected to the driving rod or arranged on a movement path of the curtain machine, and the main control board of the control device is configured to control the power supply line for supplying power to the curtain rolling device to be disconnected when the driving rod moves to a predetermined position and triggers the limit switch of the control device. The control device further comprises an elastic element and a fixing frame, one end of the elastic element being fixed to the fixing frame and the other end of the elastic element being connected to the limit transmission member, a movable contact of the limit switch being positioned between the two ends of the elastic element, and the limit transmission member being configured to drive the movable contact to move to trigger the limit switch through the elastic element when the stroke device reaches the predetermined position. The control device further comprises a circuit breaker arranged on the power supply line and a power-off transmission member, the circuit breaker being configured to control the on-off of the power supply line, and one end of the power-off transmission member being connected to the circuit breaker and the other end of the power-off transmission member being configured to be connected to the limit transmission member or the elastic element, the power-off transmission member being configured to trigger the circuit breaker to disconnect the power supply line when the stroke device exceeds the predetermined position. The predetermined position of the driving rod comprises a first limit high position and a first limit low position, and the control device further comprises a first position sensor arranged on the driving rod, the first position sensor being configured to detect the position of the driving rod, and the control device being configured to control the driving rod to stop moving when the first position sensor senses a second limit high position or a second limit low position of the driving rod, wherein the second limit high position is lower than the first limit high position and the second limit low position is higher than the first limit low position. The limit transmission member comprises a first limit transmission member and a second limit transmission member, one end of each of the first limit transmission member and the second limit transmission member being connected to the limit switch and the other end of each of the first limit transmission member and the second limit transmission member being configured to be connected to the stroke device and arranged on a movement path of the stroke device.

2. The control system for a greenhouse curtain according to claim 1, wherein: The first limit transmission member is a first limit pull rope, the second limit transmission member is a second limit pull rope, one end of the second limit pull rope is connected to the limit switch, and the first limit pull rope is connected to the second limit pull rope.

3. The control system for a greenhouse curtain according to claim 2, wherein: ​ 4. The control system for a greenhouse curtain according to claim 3, wherein: The first limit pull rope is a wire, one end of the first limit pull rope is electrically connected with the main control board, the other end of the first limit pull rope is electrically connected with the first position sensor installed on the stroke device, and the middle part of the first limit pull rope is connected to the second limit pull rope.

5. The control system for a greenhouse curtain according to claim 1, wherein: The on-off switch is an air switch, and the power-off driving member is a power-off pull rope.

6. The control system of claim 1 or 5, wherein: The installation base plate is further included, and the main control board, the limit switch, the fixing frame and the on-off switch are all installed on the installation base plate.

7. The control system for a greenhouse curtain according to claim 1, wherein: The first limit driving member of the limit driving member is connected with the driving rod and is arranged to trigger the limit switch when the driving rod reaches the first limit high position. The second limit driving member of the limit driving member is arranged on the moving path of the roller shutter machine and is connected with the framework of the greenhouse, and the second limit driving member is arranged to trigger the limit switch when the driving rod reaches the first limit low position.

8. The greenhouse roller shutter control system according to claim 7, characterized in that: The main control board is electrically connected with the first position sensor and is arranged to control the on-off of the power transmission line according to the detection result of the first position sensor.

9. The control system for a greenhouse curtain according to claim 8, wherein: The first position sensor comprises one or more of an angle sensor, a distance sensor and a wireless positioning and ranging sensor.

10. The control system for a greenhouse curtain according to claim 8, wherein: The driving rod comprises a vertical support rod and a swing rod rotatably connected with the vertical support rod, and the control device is arranged on the vertical support rod. The first position sensor is an angle sensor and is arranged on the swing rod, the first limit driving member is a wire, and both ends of the wire are electrically connected with the angle sensor and the main control board respectively.

11. The control system of claim 1, 7-10, wherein: A plurality of roller shutter machines are arranged, the plurality of roller shutter machines are sequentially installed on the driving rod, the rollers of two adjacent roller shutter machines are arranged to have a height difference, and the roller curtains on the rollers of the two adjacent roller shutter machines are arranged to have edge overlap.

12. The control system for a greenhouse curtain according to claim 11, wherein: A second position sensor is arranged on the roller or the motor shaft of the roller shutter machine, and the second position sensor is electrically connected with the main control board.

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