Vehicle-mounted intelligent tablet and agricultural machinery cockpit central control system

Abstract

The application provides a vehicle-mounted intelligent tablet and a central control system in an agricultural machine cockpit, the vehicle-mounted intelligent tablet comprising a display screen, a physical key module and a controller. The display screen is used for displaying a software interface of a virtual terminal, the software interface comprising a soft key matrix display area, the soft key matrix display area comprising a plurality of soft keys arranged in multiple columns. The physical key module comprises a mode control key at the top and a plurality of function execution keys below the mode control key, the mode control key and the plurality of function execution keys being arranged in a single column vertically. The controller is configured with a column state register, and when a double-click signal of the mode control key is received, the value of the column state register is switched, so that the multiple columns of the plurality of soft keys are alternately activated. The vehicle-mounted intelligent tablet realizes the control of the soft key matrix in multiple columns through a small number of physical keys, and achieves the effects of reliable blind operation in cold conditions with gloves, narrow panel body adaptation and operation simplification.

Description

Technical Field

[0001] This application relates to the field of electronic control technology for agricultural machinery, and in particular to a vehicle-mounted intelligent tablet and a central control system for the driver's cab of agricultural machinery. Background Technology

[0002] With the rapid development of precision agriculture, the ISOBUS communication standard has become the standard communication protocol for modern agricultural machinery. Virtual Terminals (VTs), as the human-machine interface of the ISOBUS system, enable complex control of agricultural implements through a softkey mask.

[0003] However, existing virtual terminals are usually operated by pure touch screens, which pose safety hazards such as touch screen failure when wearing gloves in cold environments, difficulty in fingertip positioning in vibrating environments, and the need to look away from the work area. Summary of the Invention

[0004] In view of this, this application provides a vehicle-mounted intelligent tablet and agricultural machinery cab central control system, which realizes the control of a multi-column soft key matrix through a small number of physical buttons, achieving reliable blind operation under cold and gloved conditions, narrow panel adaptation, and simplified operation.

[0005] In a first aspect, this application provides an in-vehicle smart tablet, including a display screen, a physical button module, and a controller: The display screen is used to display the software interface of the virtual terminal. The software interface includes a soft key matrix display area, which contains multiple soft keys arranged in multiple columns. The physical button module includes a mode control key at the top and multiple function execution keys below it. The mode control key and the multiple function execution keys adopt a single-column vertical layout, and the column arrangement of the single-column vertical layout corresponds one-to-one with the column arrangement of any single-column soft key among the multiple soft keys. The controller is configured with a column status register, which is used to switch the value of the column status register when a double-click signal of the mode control key is received, so that multiple columns of the plurality of soft keys alternately become the currently active column, and control the display screen to display the currently active column in a highlighted manner; and to trigger the function of the soft key in the first row of the currently active column when a single click signal of the mode control key is received; and to trigger the function of the soft key in the currently active column corresponding to the triggered function execution key when a trigger signal of any function execution key among the plurality of function execution keys is received.

[0006] Optionally, the mode control keys and the plurality of function execution keys arranged in a single vertical column are located on the side border of the in-vehicle smart tablet adjacent to the soft key matrix display area.

[0007] Optionally, the multiple soft keys arranged in multiple columns are in a 2-column × 6-row layout, where the first row of each column is a page-turning control key, and the second to sixth rows are function soft keys.

[0008] Optionally, the function soft keys are configured as follows: Candidate soft keys are displayed in the middle area of ​​the display screen, and the middle area of ​​the screen supports manual page turning, or page turning is performed after selecting the page turning key through the mode control key; The candidate softkey can be dragged to the softkey matrix display area. When the candidate softkey is dragged to an empty key area in the softkey matrix display area, the candidate softkey falls into the empty key area and establishes a mapping relationship. When the candidate softkey is dragged to an occupied key area in the softkey matrix display area, the originally occupied softkey forms a blanking animation and the mapping relationship is released. The dragged candidate softkey is embedded into the occupied key area and a mapping relationship is established.

[0009] Optionally, the mode control key is the power key; the soft key of the first row of the currently active column is the page-turning key, which performs left page-turning when the left column is active and right page-turning when the right column is active.

[0010] Optionally, the function that triggers the soft key corresponding to the triggered function execution key of the currently active column includes: Invoke the hardware execution module associated with the soft key to perform the function operation of the soft key; and / or, The function description information and / or function execution status of the soft key are displayed in the middle area of ​​the display screen.

[0011] Optionally, the controller presets a time threshold, and the controller is further configured to: When two valid presses of the mode control key are detected within the time threshold, it is determined to be a double-click signal; A single press of the mode control key is detected, or two presses of the mode control key are detected within an interval exceeding the time threshold, which is determined to be a click signal.

[0012] Optionally, the controller is further configured to: when the mode control key or the function execution key is triggered, control the display screen to display a visual identifier at the corresponding soft key position to indicate the currently selected row position.

[0013] Optionally, the mode control key and the plurality of function execution keys have differentiated tactile structures to distinguish the mode control key from the function execution keys by touch, and the mode control key integrates a status indicator light, which is used to indicate the column status of the currently active column with different colors.

[0014] Secondly, this application provides a central control system for an agricultural machinery cab, including a central control console and a vehicle-mounted smart tablet as described in any embodiment of this application. The vehicle-mounted smart tablet is installed on the side of the central control console facing the operator, and the physical button module is located on the side of the vehicle-mounted smart tablet closer to the operator's hand operation area.

[0015] The in-vehicle smart tablet provided in this application only requires a single mode control key and multiple function execution keys to control a multi-column, multi-row soft key matrix. All interactive operations can be achieved through physical buttons. Even when wearing heavy, cold-weather gloves, operators can still perform button operations by applying trigger pressure to the physical buttons, thus solving the problem of touchscreen response failure or decreased accuracy in cold environments. Furthermore, this application distinguishes between double-click and single-click signals based on their timing. In environments with vehicle vibration, accidental touches or brief button contacts caused by vibration will not be recognized as double-click signals, effectively preventing accidental switching of the soft key column state. Moreover, operators can complete all button operations without taking their eyes off the work area, achieving blind operation and eliminating safety hazards caused by eye movement. Attached Figure Description

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

[0017] Figure 1 This is a schematic diagram of the structure of the in-vehicle smart tablet provided in the embodiments of this application; Figure 2 This is a schematic diagram of the activation state of the left column soft keys of the in-vehicle smart tablet provided in this application embodiment; Figure 3 This is a schematic diagram of the activated state of the right-hand soft keys of the in-vehicle smart tablet provided in this application embodiment; Figure 4 This is a schematic diagram illustrating the working state of the click mode control key triggering the page-turning soft key in the first row of the currently active column, as provided in the embodiments of this application. Figure 5 This is a schematic diagram illustrating the working state of the press function execution key triggering the soft key in the corresponding row of the currently active column, as provided in the embodiments of this application. Figure 6 This is a schematic diagram illustrating the working state of the soft key in the third row of the left column selected by clicking the F2 function, as provided in the embodiments of this application. Figure 7 This is a schematic diagram illustrating the working state of the left column sixth row soft key selected by clicking the F5 function in the embodiments of this application; Figure 8 This is a schematic diagram illustrating the working state of the right column first row page-turning soft key triggered by clicking the mode control key when the right column is active, as provided in the embodiments of this application. Figure 9 This is a schematic diagram of the working state of selecting the soft key in the second row of the right column when the right column is active and the F1 function execution key is clicked in the embodiment of this application; Figure 10 This is a schematic diagram of the working state of selecting the soft key in the third row of the right column when the right column is active and the F2 function key is clicked in the embodiment of this application; Figure 11 This is a schematic diagram illustrating the working state of selecting the soft key in the sixth row of the right column when the right column is active and the F5 function key is pressed. Figure 12 This is a schematic diagram of the initial display interface of the candidate soft keys of the in-vehicle smart tablet provided in the embodiments of this application; Figure 13 This is a schematic diagram illustrating the operation of dragging candidate soft keys to the empty key area to establish a mapping relationship, as provided in the embodiments of this application. Figure 14 This is a hardware block diagram of the in-vehicle smart tablet provided in the embodiments of this application; Figure 15 This is a schematic diagram of the structure of the agricultural machinery cab central control system provided in the embodiments of this application.

[0018] Explanation of reference numerals in the attached figures: 1-Agricultural machinery cab central control system, 10-Vehicle intelligent tablet, 20-Central control panel, 11-Display screen, 12-Physical button module, 13-Controller, 111-Soft key matrix display area, 121-Mode control key, 122-Function execution key, 1111-Page turning control key, 1112-Function soft key. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or apparatuses.

[0021] In this document, references to "embodiment" or "implementation" mean that a particular feature, structure, or characteristic described in connection with an embodiment or implementation may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0022] Please refer to the following: Figures 1 to 4 This application provides an in-vehicle smart tablet 10, including a display screen 11, a physical button module 12, and a controller 13. The display screen 11 is used to display the software interface of a virtual terminal. The software interface includes a soft key matrix display area 111, which contains multiple soft keys arranged in multiple columns. The physical button module 12 includes a mode control key 121 at the top and multiple function execution keys 122 below it. The mode control key 121 and the multiple function execution keys 122 are arranged in a single column vertical layout, and the column arrangement of the single column vertical layout corresponds one-to-one with the column arrangement of any single column of soft keys among the multiple soft keys. The controller 13 is configured with a column status register, which is used to switch the value of the column status register when a double-click signal of the mode control key 121 is received, so that multiple columns of the plurality of soft keys alternately become the currently active column, and control the display screen 11 to display the currently active column in a highlighted manner; and, when a single click signal of the mode control key 121 is received, trigger the function of the soft key in the first row of the currently active column; and, when a trigger signal of any function execution key 122 among the plurality of function execution keys 122 is received, trigger the function of the soft key in the currently active column corresponding to the triggered function execution key 122.

[0023] The vehicle-mounted smart tablet 10 can be a human-computer interaction terminal that conforms to the ISOBUS virtual terminal standard. Its application scenarios can include, but are not limited to, the cockpit environment of agricultural machinery such as tractors, harvesters, seeders, sprayers, and fertilizer applicators.

[0024] The virtual terminal (VT) can be a virtual terminal conforming to the ISOBUS protocol or other types of in-vehicle human-machine interface, and this application does not limit it.

[0025] The softkey matrix display area 111 contains multiple softkeys arranged in multiple columns. These multiple columns can be two, three, or more. In one possible embodiment of this application, the multiple softkeys are arranged in a 2-column × 6-row layout, that is, 6 rows vertically and 2 columns horizontally, containing a total of 12 softkeys. In other embodiments of this application, the softkey matrix can also adopt a layout of 2 columns × 4 rows, 2 columns × 8 rows, 3 columns × 5 rows, etc.

[0026] Each softkey is a triggerable graphical user interface element, referring to an interactive area displayed on the screen via software. When a softkey is triggered, the in-vehicle smart tablet 10 executes the function corresponding to that softkey. For example, a softkey may correspond to functions such as hydraulic suspension lifting, seeding rate adjustment, or page turning.

[0027] The physical button module 12 includes a mode control key 121 at the top and multiple function execution keys 122 below it. In one possible embodiment, there is one mode control key 121 and two, three or more function execution keys 122, the number of which can be set according to the number of rows in the soft key matrix.

[0028] The mode control key 121 and the plurality of function execution keys 122 are arranged in a single-column vertical layout, meaning that the mode control key 121 and the plurality of function execution keys 122 are arranged sequentially from top to bottom along a vertical axis. The column arrangement of this single-column vertical layout corresponds one-to-one with the column arrangement of any single column of soft keys among the plurality of soft keys. In other words, the physical spatial arrangement of the mode control key 121 and the plurality of function execution keys 122 is visually aligned with the arrangement direction of any column of soft keys in the soft key matrix display area 111, thus forming a spatial correspondence between physical keys and soft key columns. This allows operators to perceive the column position of the physical keys through touch, establishing an intuitive mapping between physical keys and soft key columns, which is beneficial for blind operation.

[0029] The controller 13 is the processing unit of the vehicle-mounted smart tablet 10, used to receive input signals from the physical button module 12, perform logical judgments, and control the display content of the display screen 11.

[0030] The controller 13 is equipped with a column state register (CSR). The column state register records which column of soft keys is currently active. The value of the column state register can be represented by a binary number, an enumerated value, or other data types. In one possible embodiment, when the soft keys of the in-vehicle smart tablet 10 have two columns, left and right, the column state register can store "0" to indicate that the left column is active and "1" to indicate that the right column is active.

[0031] The controller 13 is used to switch the value of the column status register when it receives a double-click signal from the mode control key 121, so that multiple columns of the multiple soft keys alternately become the currently active columns. The double-click signal refers to the electrical signal generated when the mode control key 121 is pressed twice consecutively within a preset time.

[0032] When the value of the column status register is switched, the state of the currently active column changes. In one possible embodiment, when the in-vehicle smart tablet 10 has two columns of soft keys, the value of the column status register flips between the left and right columns; that is, left column activation becomes right column activation, or right column activation becomes left column activation. When the in-vehicle smart tablet 10 has three or more columns, the value of the column status register can cycle through multiple columns in a preset order, or it can switch according to other preset switching logic. In another possible embodiment, after the column is switched, the controller 13 can generate an audible feedback to indicate to the operator that the column switching is complete.

[0033] Specifically, after switching the value of the column status register, the controller 13 also controls the display screen 11 to highlight the currently active column. This highlighting method distinguishes the currently active column from other columns visually, allowing the operator to intuitively identify which column is currently active.

[0034] The highlighting methods may include one or more of the following: color highlighting, such as overlaying a semi-transparent background layer of green, blue, or other colors onto the entire area of ​​the currently active column, while displaying a gray or semi-transparent white background layer in the non-active column area; border highlighting, such as displaying a highlighted border, a colored border, or a bold border around the currently active column; brightness difference, increasing the display brightness of each softkey in the currently active column, while decreasing the display brightness of each softkey in the non-active column; transparency difference, decreasing the transparency of each softkey in the non-active column, i.e., making them more opaque or semi-transparent, to highlight the currently active column; identifier hints, such as displaying text labels or arrows such as "Current Column" or "Active" above, below, or to the side of the currently active column; and animation effects, such as presenting dynamic visual effects such as a breathing light effect, a flashing effect, or a scan line effect in the area of ​​the currently active column. These various highlighting methods can be used individually or in combination, and this application does not limit their use.

[0035] The controller 13 is further configured to trigger the function of the soft key in the first row of the currently active column when a click signal is received from the mode control key 121. The click signal refers to the electrical signal generated when the mode control key 121 is pressed once.

[0036] The soft keys in the first row of the currently active column refer to the top row of soft keys in the currently active column. In one possible embodiment, the soft keys in the first row of the currently active column are page-turning keys. When the left column is active, the controller 13 triggers the left page-turning key in the first row of the left column to perform a left-page-turning operation; when the right column is active, the controller 13 triggers the right page-turning key in the first row of the right column to perform a right-page-turning operation, allowing the operator to navigate the soft key matrix by clicking the mode control key 121. The "top" refers to the topmost point in the vertical direction when the in-vehicle smart tablet 10 is in a normal usage posture, such as when it is installed on the center console 20 and the display screen 11 faces the operator. Correspondingly, the left and right columns refer to the column on the left and the column on the right in the horizontal direction from the operator's perspective when facing the display screen 11, and they are arranged side by side in the horizontal direction.

[0037] The controller 13 is further configured to, upon receiving a trigger signal from any of the plurality of function execution keys 122, trigger the function of the soft key in the currently active column corresponding to the triggered function execution key 122. A mapping relationship exists between the function execution keys 122 and each soft key in the currently active column.

[0038] Please see Figure 5 , Figure 6 and Figure 7In one specific embodiment of this application, the multiple soft keys are arranged in a 2-column × 6-row layout, and the function execution keys 122 are F1 to F5. When the F1 key is triggered, the controller 13 triggers the function of the soft key in the 2nd row of the currently active column; when the F2 key is triggered, the controller 13 triggers the function of the soft key in the 3rd row of the currently active column; when the F3 key is triggered, the controller 13 triggers the function of the soft key in the 4th row of the currently active column; when the F4 key is triggered, the controller 13 triggers the function of the soft key in the 5th row of the currently active column; and when the F5 key is triggered, the controller 13 triggers the function of the soft key in the 6th row of the currently active column. In other embodiments of this application, the mapping relationship can also be: when the Fn key is triggered, the function of the soft key in the (n+1)th row of the currently active column is triggered, where n is the sequence number of the function execution key 122.

[0039] As can be seen, compared to existing agricultural machinery virtual terminals that rely on touchscreens for interactive control, which suffer from drawbacks such as touchscreen malfunction under cold conditions with gloves on, inaccurate fingertip positioning due to vehicle vibration, and safety hazards due to the operator's line of sight being out of the work area, the vehicle-mounted intelligent tablet 10 provided in this application features a display screen 11 showing a softkey matrix display area 111 containing multiple columns of softkeys. The physical button module 12 uses a single-column vertically arranged mode control key 121 and multiple function execution keys 122, with the button arrangement corresponding one-to-one with the single-column softkey arrangement of the softkey matrix. The controller 13 has a built-in column status register, which recognizes the double-click signal of the mode control key 121 to switch the active softkey column and highlight the currently active column, recognizes the single-click signal of the mode control key 121 to trigger the function of the first row of softkeys in the active column, and recognizes the trigger signal of any function execution key 122 to match and call the function of the corresponding row of softkeys in the active column. The vehicle-mounted intelligent tablet 10 provided in this application only requires a single mode control key 121 and multiple function execution keys 122 to achieve control of a multi-column, multi-row softkey matrix. Compared to traditional dual-row physical key solutions, the overall width of the physical key module 12 in the vehicle-mounted smart tablet 10 provided in this embodiment can be effectively reduced, thus adapting to diverse installation scenarios such as the narrow design of modern agricultural machinery cabs, side mounting on steering wheels, and installation on narrow center consoles. Furthermore, the vehicle-mounted smart tablet 10 enables all interactive operations through physical keys. Even when wearing heavy cold-weather gloves, operators can still perform key operations by applying trigger pressure to the physical keys, thus solving the problem of touchscreen response failure or decreased accuracy in cold environments. Simultaneously, the tactile feedback of the physical keys allows operators to clearly perceive whether a key has been successfully pressed, further enhancing the certainty of the operation. In addition, this application distinguishes between double-click and single-click signals based on their timing. In environments with vehicle vibration, accidental touches or brief key contacts caused by vibration will not be recognized as double-click signals, effectively preventing accidental switching of the soft key row state. Moreover, operators can complete all key operations without taking their eyes off the work area, achieving blind operation and eliminating safety hazards caused by eye movement.

[0040] Please refer to it again. Figure 2 The mode control key 121 and the plurality of function execution keys 122, arranged in a single vertical column, are located on the side border of the in-vehicle smart tablet 10 adjacent to the soft key matrix display area 111.

[0041] The side bezel refers to the area on the panel of the in-vehicle smart tablet 10 located between the edge of the display area and the device casing. The panel structure of the in-vehicle smart tablet 10 includes a central display area and a border area surrounding the display area. The side bezel can be any one of a left border, a right border, a top border, or a bottom border. In a preferred embodiment of this application, the side bezel is a right border or a left border, that is, a border parallel to the column direction of the soft key matrix display area 111.

[0042] The term "adjacent" means that there are no other functional areas or components between the physical button module 12 and the soft key matrix display area 111, or the distance between them is extremely small, for example, no more than 5mm, preferably no more than 2mm, so that the physical button module 12 and the soft key matrix display area 111 are spatially adjacent.

[0043] In other embodiments of this application, "adjacent" can also be understood as the central axis of the physical button module 12 being parallel or substantially aligned with the column center lines of adjacent columns in the soft key matrix display area 111, thereby further enhancing the spatial correspondence and mapping consistency between the physical buttons and the soft key columns.

[0044] In one possible embodiment, the width of the physical button module 12 is no greater than 50mm, for example, 45mm, 40mm, or narrower. The width of the physical button module 12 can be understood as the maximum dimension along the horizontal direction perpendicular to the column arrangement direction of the single-column vertical layout. The width can also be understood as the horizontal distance from the leftmost outer edge to the rightmost outer edge of all buttons in the physical button module 12. Compared to the traditional dual-row physical button layout, the single-row side-edge layout of this application places the physical button module 12 on the side edge and adopts a single-row vertical layout, which can effectively reduce the occupation of the physical button module 12 on the width of the device panel, thereby effectively reducing the panel width of the vehicle smart tablet 10. This allows the vehicle smart tablet 10 to be adapted to narrow-body installation scenarios, such as installation on the right side cover of the steering wheel, where the physical button module 12 is located on the right side edge of the tablet, and the operator's right thumb can naturally reach it. Another example is installation on a narrow-body center console, where the narrow-body tablet can be embedded in the narrow space of the center console when the cockpit space is limited. Yet another example is installation on the steering wheel spokes, where the vehicle smart tablet 10 can be fixed on the steering wheel spokes, with the physical button module 12 close to the edge of the steering wheel, so that the operator can operate it without taking their hands off the steering wheel.

[0045] As can be seen, in the in-vehicle smart tablet 10 provided in this application embodiment, the physical button module 12 is arranged in a single column along the vertical direction on the side frame, consistent with the vertical arrangement direction of any column of soft keys in the soft key matrix display area 111, and the two are set adjacent to each other. During operation, the operator's line of sight switches between the physical buttons and the soft key column in a very short distance, which can quickly establish the mapping between the position of the physical buttons and the corresponding row position of the soft key column, reducing the difficulty of operation. At the same time, since the physical button module 12 is adjacent to the side frame of the soft key matrix display area 111, when the operator touches the physical button, the vertical position change of the finger is consistent with the position change of each row in the soft key matrix in the spatial direction. By sensing the vertical position of the finger on the physical button module 12, the operator can infer which row in the soft key matrix is ​​currently being operated. Combined with the currently active column indicated by the column status register, the operator can accurately know which specific soft key is being operated, thus providing an effective structural basis for blind operation without visual confirmation. In addition, the physical buttons are located on the side bezel, which will not obstruct the soft key content in the soft key matrix display area 111, ensuring that the information on the display screen 11 is fully visible. At the same time, the screen surface will not be contaminated by finger operation, thus making it effective for operation scenarios while wearing gloves.

[0046] Please see Figure 3 The multiple soft keys arranged in multiple columns are in a 2-column × 6-row layout, where the first row of each column is the page turning control key 1111, and the second to sixth rows are the function soft keys 1112.

[0047] The first to sixth rows are arranged vertically from top to bottom. When the in-vehicle smart tablet 10 is in use, the first row is at the top of the soft key matrix display area 111, and the sixth row is at the bottom. The vertical arrangement of the six rows of soft keys in each column corresponds one-to-one with the vertical arrangement of the mode control keys 121 and multiple function execution keys 122 in the physical button module 12. This allows the operator to map the vertical position of the physical buttons, perceived by touch, to the row position in the soft key column, thus accurately triggering the target soft key without looking at the screen.

[0048] The first row of each column contains page-turning control keys 1111, meaning the first row of the left column and the first row of the right column both contain page-turning control keys 1111. These page-turning control keys 1111 are navigation controls used to switch between softkey content pages in the softkey matrix display area 111. The page-turning operation can target either the content pages within the softkey matrix display area 111 or the candidate softkey list displayed in the center of the screen. In one possible embodiment, when an operator browses candidate softkeys in the center of the screen, they can trigger page-turning by clicking the mode control key 121, thus scrolling through the candidate softkey list.

[0049] In one possible embodiment, the soft key in the first row of the left column is the left page-turn key, and the soft key in the first row of the right column is the right page-turn key. When the operator clicks the mode control key 121 and the column status register indicates that the currently active column is the left column, the controller 13 triggers the left page-turn key in the first row of the left column to perform a left page-turning operation, that is, switching the current page to the previous page, for example, turning the page forward in the candidate soft key list; when the operator clicks the mode control key 121 and the column status register indicates that the currently active column is the right column, the controller 13 triggers the right page-turn key in the first row of the right column to perform a right page-turning operation, that is, switching the current page to the next page, for example, turning the page backward in the candidate soft key list.

[0050] In other embodiments of this application, the page turning control key 1111 can also realize the up and down page turning function. For example, the first row of the left column can be turned up and the first row of the right column can be turned down. The specific page turning direction can be set according to the arrangement direction of the content in the soft key matrix display area 111 and the navigation logic.

[0051] In this configuration, rows 2 through 6 of each column are function soft keys 1112, specifically rows 2 through 6 of the left and right columns. Each function soft key 1112 is an interactive element used to execute specific application functions or device control commands. In other words, each function soft key 1112 is associated with a specific hardware execution module or software function module of the controlled device. When a function soft key 1112 is triggered, the controller 13 invokes the hardware execution module associated with the function soft key 1112 to perform the corresponding functional operation. For example, it sends control commands to the electronic control unit of the agricultural machinery via the ISOBUS bus to drive the corresponding actuator to complete the corresponding action.

[0052] In one specific embodiment of this application, the function soft key 1112 can correspond to various agricultural machinery operation commands. For example, in a seeder operation scenario, the operation commands corresponding to the function soft key 1112 include, but are not limited to: increasing seeding rate, decreasing seeding rate, opening the seed box, closing the seed box, starting the seed metering device, and stopping the seed metering device. In a harvester operation scenario, the operation commands corresponding to the function soft key 1112 include, but are not limited to: raising and lowering the header, adjusting the speed of the reel, and switching between unloading and straw processing modes.

[0053] It should be noted that, according to the ISO 11783-6 standard, each soft key mask object supports a maximum of 64 virtual soft keys; when the total number of virtual soft keys exceeds the number of physical soft keys reported by the virtual terminal, the virtual terminal should be configured with a paging mechanism.

[0054] The in-vehicle smart tablet provided in this application follows the aforementioned page-turning mechanism specification at the ISOBUS protocol layer. The soft key matrix display area 111 is the local terminal's display reconstruction and physical mapping area for standard soft key mask objects. Its underlying soft key activation interaction still communicates with the agricultural machinery electronic control unit (Working Set) via the standard ISOBUS bus using standard message communication. This application's embodiments adapt and optimize the presentation format and physical triggering method of standard soft keys.

[0055] As can be seen, in the vehicle-mounted smart tablet 10 provided in this application embodiment, the page-turning control key 1111 in the first row is responsible for page navigation, and the function soft keys 1112 in the second to sixth rows are responsible for executing specific device operations. The operator triggers page turning by clicking the mode control key 121 and triggers the function soft keys 1112 by clicking the function execution key 122, which is easy for the operator to understand and remember. At the same time, the number of function soft keys 1112 and the number of function execution keys 122 form a one-to-one mapping relationship. The operator can map the five function execution keys 122 to the second to sixth rows of the currently active column without additional operation, making the operation process more convenient and accurate.

[0056] In one specific embodiment of this application, the vehicle-mounted smart tablet 10 adopts a layered design in its software architecture, divided from top to bottom into a local HMI adaptation layer and an ISOBUS protocol layer. The ISOBUS protocol layer handles communication and interaction with the agricultural machinery electronic control unit. The local HMI adaptation layer, deployed above the ISOBUS protocol layer, is responsible for mapping the hardware trigger events collected by the physical button module 12 into two types of instructions: one type is local HMI control events, including column status switching instructions triggered by double-clicking the mode control key 121, status indicator control instructions, and active column highlighting control instructions; the other type is standard VT protocol events, including after the function execution key 122 is triggered, the controller 13 looks up the corresponding soft key object identifier based on the current active column status, generates a standard soft key activation message, and sends it to the agricultural machinery electronic control unit via the ISOBUS bus; and the page-turning function triggered by a single click of the mode control key 121, corresponding to the standard virtual soft key page-turning mechanism, generating and sending a soft key activation message carrying the page-turning soft key object identifier. Through the above layered architecture design, the improvement of the physical button interaction method in this application is limited to the local HMI adaptation layer, without changing the standard interaction semantics and message format of the ISOBUS protocol layer, ensuring that the terminal has effective interoperability with various agricultural machinery and equipment that conform to the ISOBUS standard.

[0057] Please see Figure 12 and Figure 13The function soft key 1112 is configured as follows: candidate soft keys are displayed in the middle area of ​​the display screen 11, and the middle area of ​​the screen supports manual page turning, or page turning is performed after selecting the page turning key through the mode control key 121; the candidate soft key can be dragged to the soft key matrix display area 111. When the candidate soft key is dragged to an empty key area of ​​the soft key matrix display area 111, the candidate soft key falls into the empty key area and establishes a mapping relationship; when the candidate soft key is dragged to an occupied key area of ​​the soft key matrix display area 111, the originally occupied soft key forms a blanking animation and releases the mapping relationship, and the dragged candidate soft key is embedded in the occupied key area and establishes a mapping relationship.

[0058] The central area of ​​the screen refers to the display area on the display screen 11 excluding the soft key matrix display area 111, and is used to display a list of candidate soft keys, current function status information, device operating parameters, or other auxiliary information. The central area of ​​the screen and the soft key matrix display area 111 are spatially adjacent on the display screen 11, either horizontally or vertically.

[0059] In one possible embodiment, the central area of ​​the screen and the soft key matrix display area 111 are arranged side by side on the display screen 11, with the central area of ​​the screen located on the left and the soft key matrix display area 111 located on the right, consistent with the operator's line of sight movement, so that the operator can observe the layout changes of the soft key matrix display area 111 while browsing candidate soft keys.

[0060] The manual page-turning operation refers to the operator switching the display page of the candidate soft key list by touching the middle area of ​​the screen and performing a swipe gesture or clicking the page-turning control on the screen.

[0061] The operator can also select the pagination key of the currently active column using mode control key 121, and then trigger the pagination operation.

[0062] The candidate soft keys refer to the alternative soft keys that can be selected and configured by the operator in the soft key matrix display area 111. Candidate soft keys are graphical user interface elements, each with its associated function description information and / or function execution logic. The candidate soft keys originate from the function list reported by the agricultural machinery currently connected to the ISOBUS system. When the vehicle-mounted intelligent tablet 10 establishes a communication connection with the agricultural machinery via the ISOBUS bus, the agricultural machinery will report its supported control functions to the virtual terminal in the form of a set of soft keys. For example, when a harvester is connected to the ISOBUS system, it can report candidate soft keys for functions such as header lifting, reel speed adjustment, and grain unloading; when a seeder is connected to the system, it can report candidate soft keys for functions such as seed quantity adjustment and seed box switch.

[0063] In one possible embodiment, the candidate softkeys are displayed in a list format in the center of the screen, such as a vertical list, a grid list, or a carousel list. Each candidate softkey occupies one entry in the list, and the entry displays the softkey's icon, function name, and / or function summary.

[0064] In another possible embodiment, candidate soft keys can also be grouped and displayed according to function categories, such as navigation control, operation parameter adjustment, equipment status monitoring, etc., to facilitate operators to quickly locate the required function.

[0065] The candidate soft keys can be dragged to the soft key matrix display area 111. Dragging refers to the operator performing a long press and move operation on the candidate soft keys via the touchscreen.

[0066] In one possible embodiment, the display style of the dragged candidate softkey can change during dragging to provide visual feedback to the operator. For example, the dragged candidate softkey can be slightly enlarged, its color changed, a shadow effect displayed, or it can follow the movement of the finger. Simultaneously, when the dragged candidate softkey enters the softkey matrix display area 111, each key area can display a highlighted border or placement hint to indicate the current cursor position and the available placement area.

[0067] In another possible embodiment, the drag-and-drop operation can also be implemented via physical buttons. For example, the operator can select a candidate softkey from the candidate softkey list using the function execution key 122, and then move the candidate softkey to the target key area in the softkey matrix display area 111 using the page up or arrow keys, thereby further expanding the blind operation capability of the in-vehicle smart tablet 10.

[0068] Each key in the softkey matrix display area 111 can have two states: an empty key area and an occupied key area. An empty key area refers to a key that has not yet been configured with any function softkey 1112, and its display can be in the form of a blank space, a gray placeholder, or a dashed border. An occupied key area refers to a key that has been configured with a function softkey 1112, and its display shows the corresponding function icon and / or function name.

[0069] Specifically, when a candidate softkey is dragged to an empty key area in the softkey matrix display area 111, the candidate softkey falls into the empty key area and establishes a mapping relationship. "Falling into" means that the candidate softkey embeds itself into and occupies the display position of the empty key area after the drag is released. After falling in, the empty key area becomes an occupied key area, and its display content changes from blank to the function icon and / or function name of the candidate softkey.

[0070] The establishment of the mapping relationship refers to the controller 13 establishing a corresponding association between candidate soft keys and empty key areas. After the mapping relationship is established, when the operator triggers the key area through a physical key, the controller 13 can find the function corresponding to the candidate soft key according to the mapping relationship and execute the corresponding function operation.

[0071] In one possible embodiment, after a candidate soft key falls into the empty key area, the empty key area can display an animation effect, such as gradually expanding from a blank area to display the content of the candidate soft key, to indicate to the operator that the configuration has been successfully completed.

[0072] When a candidate softkey is dragged to an occupied key area in the softkey matrix display area 111, the original occupied softkey undergoes a blanking animation and its mapping is released. The dragged candidate softkey then embeds itself into the occupied key area and establishes a mapping relationship. In other words, when the target key area is already occupied, the newly dragged candidate softkey will replace the original softkey. During this process, the original softkey is removed, and the new softkey is assigned to that key position. The blanking animation refers to the visual effect of the original occupied softkey gradually disappearing from the display screen 11, which is used to provide clear visual feedback to the operator, making the operator clearly aware that the original softkey has been removed.

[0073] As can be seen, the vehicle-mounted smart tablet 10 provided in this application embodiment allows operators to drag candidate soft keys from the middle area of ​​the screen to any key position in the soft key matrix display area 111 according to work needs or personal operating habits, realizing the on-demand layout of function soft keys 1112. Different soft key configuration schemes can adapt to different agricultural machinery or different work stages, enabling the same vehicle-mounted smart tablet 10 to flexibly adapt to various scenarios. At the same time, candidate soft keys are displayed in a list in the middle area of ​​the screen, and operators can complete the configuration by dragging and dropping, without having to enter multi-level menus or perform complex setting processes. When the target key area is empty, it is directly placed and a mapping is established. When the target key area is occupied, the original soft key forms a disappearing animation and the mapping is removed, and the new soft key is embedded and a mapping is established, making the operation more convenient. In addition, the middle area of ​​the screen supports manual page turning, and also supports selecting the page turning key through the mode control key 121 to perform page turning, so that operators can still browse candidate soft keys through physical buttons even when wearing gloves or when the touch screen is unusable, further ensuring the availability of configuration functions in cold environments.

[0074] Please refer to it again. Figure 12 and Figure 13 The mode control key 121 is the power key; the soft key in the first row of the currently active column is the page-turning key, which performs left page-turning when the left column is active and right page-turning when the right column is active.

[0075] The mode control key 121 serves as both a power on / off function and a mode control function. The controller 13 has a preset long-press determination duration: when the device is powered on, the controller 13 identifies single-click and double-click signals according to the above logic and executes the corresponding operations; when the pressed duration of the mode control key 121 exceeds the preset long-press threshold, it is determined as a power-off signal, and the system is powered off. When the device is powered off, the controller 13 does not respond to single-click or double-click signals of the power button, but only responds to long-press signals to execute the power-on operation.

[0076] In one possible embodiment, the controller 13 has a preset time threshold. When the controller 13 detects a trigger signal from the mode control key 121, it determines the operation type based on the time threshold: when the device is powered on, if two valid presses are detected within the time threshold, it is determined to be a double-click signal, and a column switching operation is performed; if a single press is detected, or two presses are detected within an interval exceeding the time threshold, it is determined to be a single-click signal, and a page-turning operation is performed; when the operator presses and holds the mode control key 121, for example, for more than 2 or 3 seconds, the controller 13 determines it to be a power-off signal and performs a system power-off operation. When the device is powered off, the controller 13 does not respond to single-click or double-click signals from the power button, but only responds to long-press signals to perform a power-on operation.

[0077] The left page turning refers to switching the displayed content to the left, such as switching from the current page to the previous page or turning forward. The right page turning refers to switching the displayed content to the right, such as switching from the current page to the next page or turning backward.

[0078] In one possible embodiment, when the operator clicks the mode control key 121 and the currently active column is the left column, the controller 13 triggers a left page-turning operation. On the display screen 11, the page-turning key in the first row of the left column can display selection feedback, such as displaying a red border, a highlighted background, or a magnification effect, while the candidate soft key list in the middle area of ​​the screen flips forward one page.

[0079] In another possible embodiment, the page-turning process can also be accompanied by page-sliding animations, such as the candidate soft key list sliding out to the left and the new page sliding in from the right, to enhance the smoothness and responsiveness of the operation.

[0080] In one specific embodiment of this application, it is assumed that the in-vehicle smart tablet 10 is currently in the function soft key 1112 configuration mode. The middle area of ​​the display screen 11 shows a candidate soft key list, which has three pages, and the first page is currently displayed. The first row of the left and right columns of the soft key matrix display area 111 displays a left arrow icon and a right arrow icon, respectively. To browse the candidate soft keys on the third page, the operator follows these steps: Activate the right column by double-clicking the mode control key 121. Upon detecting the double-click signal, the controller 13 switches the column status register from the left column to the right column, and the green highlighted background on the display 11 shifts from the left column to the right column. To perform a right-page navigation, the operator clicks the mode control key 121. Upon detecting the click signal, the controller 13 queries the column status register and finds that the currently active column is the right column. This triggers the function of the soft key in the first row of the right column, displaying a red border on the first row of the right column on the display 11 to indicate that the key is selected. Simultaneously, the candidate soft key list in the middle area of ​​the screen switches from the first page to the second page. To perform a right-page navigation again, the operator clicks the power button again, and the controller 13 triggers the right-page navigation again, switching the candidate soft key list from the second page to the third page. The operator has now successfully browsed to the third page of candidate soft keys. In this embodiment, the operator only uses the physical button 121 during the page turning process. The finger is always kept at the top of the physical button module 12, that is, the position of the mode control button 121. There is no need to move to the screen for touch operation, nor is there a need to use other function execution buttons 122.

[0081] In another specific embodiment of this application, when the operator double-clicks the mode control key 121, the parser of the vehicle-mounted smart tablet 10 determines it as a double-click signal, queries the value of the current column status register to determine the currently active column, and triggers the page-turning control key 1111 of the first row of the active column. The controller 13 generates a soft-key activation message conforming to a standard format based on the object identifier pre-configured by the page-turning control key 1111, and sends it to the currently connected agricultural machinery electronic control unit to realize soft-key page-turning operation under the standard ISOBUS protocol. When the operator clicks the mode control key 121, the parser determines it as a click signal, switches the value of the column status register, for example, from "0" representing left column activation to "1" representing right column activation, and the highlighted background of the active column on the display screen 11 shifts synchronously with the register status. This operation only modifies the mapping relationship between the local terminal physical keys and the soft-key matrix, and does not enter the ISOBUS protocol layer. In the embodiments of this application, the single-click and double-click events of the above-mentioned mode control key 121 are decoupled between the local HMI adaptation layer and the ISOBUS protocol layer, and the optimized design of local human-computer interaction will not interfere with the interaction semantics and message specifications of the underlying standard protocol.

[0082] As can be seen, the in-vehicle smart tablet 10 provided in this embodiment further reduces the total number of physical buttons by reusing the mode control key 121 as the power button, thus controlling the panel width to a smaller range and optimizing both hardware cost and space occupation. Furthermore, activation of the left column performs left page turning, and activation of the right column performs right page turning. When browsing candidate soft keys or function pages, the operator only needs to double-click the mode control key 121 to select the active column, and then click the mode control key 121 again to complete the page turning in the corresponding direction. This correspondence conforms to the operator's spatial intuition, eliminating the need to memorize the mapping rules between page turning directions and buttons, making operation reliable and convenient in vibration environments and gloved application scenarios.

[0083] Please refer to it again. Figure 3 and Figure 4 The function that triggers the soft key corresponding to the triggered function execution key 122 in the currently active column includes: Invoke the hardware execution module associated with the soft key to perform the function operation of the soft key; and / or, The function description information and / or function execution status of the soft key are displayed in the middle area of ​​the display screen 11.

[0084] The hardware execution module refers to the hardware component in the controlled device connected to or controlled by the vehicle-mounted smart tablet 10, which is used to perform specific physical actions or realize specific functions. When the function execution key 122 is triggered, the controller 13 searches for the function configuration information associated with the soft key based on the currently active column and the row position corresponding to the function execution key 122, and then generates the corresponding control command, which is sent to the corresponding hardware execution module through the communication interface, and the hardware execution module performs the specific function operation.

[0085] In a specific embodiment of this application, taking a seeder operation scenario as an example, the currently active column of the vehicle-mounted smart tablet 10 is the left column. When the operator clicks the F2 key, it corresponds to the soft key in the third row of the left column. The function of the soft key is to increase the seeding amount. After receiving the trigger signal of the F2 key, the controller 13 queries the column status register to confirm that the currently active column is the left column. Then, according to the preset mapping relationship, F2 corresponds to the third row, and it is determined that the soft key in the third row of the left column is triggered. The controller 13 reads the function configuration information of the soft key and learns that its associated hardware execution module is the seed metering motor driver. The controller 13 sends an instruction to increase the speed to the seed metering motor driver. After receiving the instruction, the seed metering motor driver drives the seed metering motor to increase the speed, thereby increasing the seeding amount.

[0086] The function description information is used to explain to the operator the specific meaning of the function corresponding to the current softkey and / or operation prompts. The specific content of the function description information includes, but is not limited to: function name, such as increasing seeding rate, raising the header, hydraulic suspension lifting, etc.; function description, such as increasing seeding rate (0.5 kg / acre per step), raising the header (lifting height limit 5m), etc., used to explain the specific parameter range or execution method of the function; operation prompts, such as "Please ensure there are no obstacles behind you," "Please start the engine first," etc., used to remind the operator of matters requiring attention.

[0087] The function execution status is used to provide feedback to the operator regarding whether the function corresponding to the current soft key is being executed, completed, or failed. The specific content of the function execution status includes, but is not limited to, execution in progress, execution completed, execution failed, or execution progress status.

[0088] In one possible embodiment, the function execution status can also be presented through visualization methods such as numerical values, progress bars, and color changes to enhance the efficiency of information transmission.

[0089] As can be seen, the in-vehicle smart tablet 10 provided in this embodiment executes function operations by calling the hardware execution module, ensuring that the operator's key commands can be executed accurately. Simultaneously, by displaying function description information and / or execution status in the middle area of ​​the display screen 11, the operator can promptly obtain the function content and execution result of the current operation, avoiding operational uncertainty. Furthermore, when the operator is unfamiliar with the specific functions of the soft keys or has difficulty reading the soft key text while wearing gloves, the function description information displayed in the middle area of ​​the display screen 11 can help the operator confirm whether the currently triggered function is correct, effectively reducing the risk of misoperation. In addition, the display of the function execution status allows the operator to track the operation progress and results in real time, enhancing the certainty of the operation.

[0090] Optionally, the controller 13 presets a time threshold, and the controller 13 is further configured to: When two valid presses of the mode control key 121 are detected within the time threshold, it is determined to be a double-click signal; A single press of the mode control key 121 or two presses of the mode control key 121 within an interval exceeding the time threshold is determined as a click signal.

[0091] The time threshold is a preset time length parameter of the controller 13, which is used as a time reference to distinguish between single-click signals and double-click signals.

[0092] In one possible embodiment, the time threshold can be between 200ms and 500ms, for example, 200ms, 250ms, 300ms, 350ms, 400ms, 450ms, or 500ms. The time threshold can also be any sub-range within the above range, for example, 250ms to 400ms.

[0093] In another possible embodiment, the time threshold can also be automatically adjusted according to the usage environment of the in-vehicle smart tablet 10. For example, in scenarios where the vehicle body vibrates violently, such as when farming in the field, the controller 13 can automatically extend the time threshold appropriately, for example, from 300ms to 400ms, to reduce the probability of accidental touches caused by vibration being identified as double-tap signals; while in a stable driving or stationary state, the controller 13 can restore the time threshold to the normal value.

[0094] In another possible embodiment, the setting of the time threshold can also take into account the physical characteristics of the mode control key 121 in the physical button module 12. For example, when the trigger pressure of the mode control key 121 is set to 200g to 400g, the operator needs a certain amount of force and time to press the key, and its keying speed will be slower than that of a tactile key. Therefore, the setting of the time threshold should be matched with the key travel depth and trigger pressure to ensure that the double-click signal can be correctly recognized under normal operating speed.

[0095] The determination of a valid press can be based on a trigger pressure threshold. The mode control key 121 is connected to a pressure sensor or a push-button switch. The controller 13 only considers a valid press when the pressure applied by the operator to the mode control key 121 reaches or exceeds a preset trigger pressure threshold. If the pressure does not reach the trigger pressure threshold, the controller 13 ignores the touch and does not count it as a valid press. In other embodiments of this application, for physical buttons with mechanical travel, the controller 13 can also determine whether a valid press has occurred by detecting whether the button's displacement reaches a preset travel threshold. The controller 13 only considers a valid press when the button is pressed to a sufficient depth.

[0096] In one possible embodiment, the controller 13's determination of double-click signals also includes an anti-accidental touch mechanism. For example, a minimum time interval limit is set. If the time interval between two presses is too short, such as less than 50ms, the controller 13 can determine it as mechanical jitter or misoperation and not recognize it as a double-click signal, thereby filtering out multiple triggers within a very short interval caused by button contact bounce or vibration.

[0097] In another possible embodiment, after the controller 13 detects the first valid press, it provides tactile feedback, such as button vibration or a "beep" sound, to indicate to the operator that the first press has been recognized and to wait for the second press. If the operator completes the second press within a certain period of time after receiving the feedback, it is determined as a double-click signal, reducing the failure rate of double-click recognition due to operator hesitation.

[0098] In one specific embodiment of this application, the in-vehicle smart tablet 10 is powered on, the time threshold is preset to 300ms, and the currently active column is the left column. When the operator wants to perform a page-turning operation, they click the mode control key 121 once and then release it. The controller 13 detects the first valid press, starts a timer, and waits for a second press. When the timer reaches 300ms, the controller 13 has not detected a second valid press. The controller 13 determines this as a click signal, queries the column status register, finds the current column is the left column, and triggers the soft key in the first row of the left column to perform a left page turn. The display screen 11 shows the page turn result, and the operator completes the page turn operation.

[0099] In another specific embodiment of this application, the in-vehicle smart tablet 10 is powered on, the time threshold is preset to 300ms, and the currently active column is the left column. When the operator wishes to perform a column switching operation, they double-click the mode control key 121. Approximately 150ms after the first press, the second press is completed. The controller 13 detects the first valid press and starts a timer. Before the timer reaches 300ms, it detects the second valid press and determines it as a double-click signal. The controller 13 ignores the page-turning operation and instead performs a column switching operation: switching the column status register from the left column to the right column, and changing the green highlighted background of the display screen 11 from the left to the right, thus completing the column switching operation.

[0100] As can be seen, the vehicle-mounted smart tablet 10 provided in this embodiment uses a time threshold to distinguish different operation modes of the mode control key 121, enabling a single key to carry two different control functions. This expands the control operation functions without increasing the number of physical keys and effectively simplifies and narrows the physical key module 12. Furthermore, when agricultural machinery is operating in the field, the vehicle body vibrates violently. A single touch or brief key contact caused by vibration cannot meet the double-click judgment condition of completing two valid presses within the time threshold, thus preventing it from being mistakenly judged as a column switch. Only when the operator consciously presses twice consecutively and quickly can a column switch be triggered, further improving the certainty of column state switching and operational safety. In addition, whether it is a single press or two presses with a longer interval, it is judged as a single-click signal and a page-turning operation is performed, ensuring the success rate and timely response of the page-turning operation.

[0101] Please see Figure 8 , Figure 9 , Figure 10 and Figure 11 The controller 13 is further configured to: when the mode control key 121 or the function execution key 122 is triggered, control the display screen 11 to display a visual identifier at the corresponding soft key position to indicate the currently selected row position.

[0102] When the mode control key 121 is clicked, the controller 13 controls the display screen 11 to display a visual identifier at the soft key position of the first row of the currently active column. For example, when the currently active column is the left column, the corresponding position is the first row of the left column; when the currently active column is the right column, the corresponding position is the first row of the right column.

[0103] When any of the multiple function execution keys 122 is clicked and triggered, the controller 13 controls the display screen 11 to display a visual identifier at the soft key position corresponding to the function execution key 122 in the currently active column.

[0104] In one possible embodiment, when the mode control key 121 or the function execution key 122 is triggered, a highlighted background is displayed around the corresponding soft key position to distinguish it from other soft keys in the soft key matrix display area 111. In other embodiments of this application, the visual identifier may also have dynamic effects, such as a flashing border, a breathing border, or an expanding or contracting border, to further enhance the recognizability of the visual feedback. In other embodiments of this application, the visual identifier may also be a color change or animation effect, and multiple visual identifiers can be used in combination.

[0105] In another possible embodiment, the display duration of the visual identifier can be preset by the controller 13, for example, 300ms, 500ms, 800ms, or 1000ms. The display duration can be adjusted according to the operation scenario: in fast operation scenarios, such as frequently flipping through candidate soft keys, a shorter display duration, such as 300ms, can be used; in operation scenarios that require key confirmation, such as performing critical equipment control functions, a longer display duration, such as 1000ms, can be used.

[0106] In another possible embodiment, the visual indicator when the mode control key 121 is triggered can also be displayed for a preset time, such as 300ms to 500ms, after the page turning operation is completed, and then disappear automatically to help the operator confirm that the page turning operation has been completed.

[0107] As can be seen, in the vehicle-mounted smart tablet 10 provided in this application embodiment, after the operator presses the mode control key 121 or the function execution key 122, a visual indicator is displayed at the corresponding soft key position. The operator can confirm whether the row position corresponding to the current operation is correct by scanning the indicator, eliminating the uncertainty caused by blind operation or button positioning deviation due to wearing gloves. Furthermore, when the operator accidentally presses an adjacent function execution key 122 due to hand deviation from the initial position, the visual indicator will indicate the actual selected row position, allowing the operator to promptly detect the deviation and effectively reduce the risk of misoperation.

[0108] Please refer to it again. Figure 2 The mode control key 121 and the plurality of function execution keys 122 have differentiated tactile structures to distinguish the mode control key 121 from the function execution keys 122 by touch. The mode control key 121 integrates a status indicator light, which is used to indicate the column status of the currently active column with different colors.

[0109] The differentiated tactile structure refers to the perceptible differences in physical characteristics between the mode control key 121 and the function execution key 122, such as differences in shape, height, texture, etc.

[0110] In one possible embodiment, the mode control key 121 is a circular raised button, while the function execution key 122 is a rectangular flat button. The diameter of the mode control key 121 is approximately 12mm, while the dimensions of the function execution key 122 are approximately 10mm × 8mm. The operator can distinguish between the two by sensing the size of the button's coverage area. For example, the raised height of the mode control key 121 is approximately 3mm, while the flat height of the function execution key 122 is approximately 1.5mm lower than that of the mode control key 121. This ensures that when the operator's finger slides across the surface of the physical button module 12, the button with the highest raised area is the mode control key 121, providing intuitive tactile positioning. Alternatively, the surface of the mode control key 121 may have an anti-slip texture, while the surface of the function execution key 122 may be a smooth flat surface. The operator can distinguish between the two by touching the roughness of the surfaces. These various differentiation methods can be used individually or in combination.

[0111] In another possible embodiment, the mode control key 121 and the function execution key 122 differ in key travel and / or tactile feedback. The mode control key 121 has a longer key travel, for example, 1.0mm to 1.5mm, and also has a more pronounced tactile feedback, such as a clear "click" feedback during pressing, to enhance its unique tactile feel as a mode switching key. The function execution key 122 has a shorter key travel, for example, 0.5mm to 0.8mm, and also has a lighter tactile feedback to support rapid continuous operation.

[0112] The status indicator light is used to provide the operator with the column status information of the currently active column through the light color and / or light status. The operator only needs to scan the mode control key 121 with his peripheral vision to know the currently active column, without having to move his eyes to the display screen 11, thus reducing the visual attention required by the operator when confirming the column status.

[0113] In one possible embodiment, the status indicator light uses different colors to indicate the column status of the currently active column. Specifically, the status indicator light can display at least two different colors, each corresponding to a different column status. In other embodiments of this application, the status indicator light can also assist in indicating the column status in the following ways: constant on and flashing, with one column status being constant on and the other flashing; different flashing frequencies, with the indicator light flashing slowly when the left column is active and flashing quickly when the right column is active; and brightness differences, with one column status being high brightness and the other low brightness. In a preferred embodiment of this application, the above methods can be combined with color indication to form a multi-dimensional status indication. For example, when the left column is active, the light is constantly green, and when the right column is active, the light flashes blue. The operator can confirm the column status by combining color and on / off modes, further reducing the possibility of misjudgment.

[0114] In one possible embodiment, the brightness of the status indicator light can be automatically adjusted according to the ambient light intensity: during the day or in bright light, the status indicator light emits a higher brightness to ensure clear visibility even in direct sunlight; at night or in dim light, the status indicator light emits a lower brightness to avoid excessive light irritating the operator's eyes or causing glare on the windshield, thus affecting driving safety. The ambient light intensity can be detected by the ambient light sensor built into the in-vehicle smart tablet 10, or it can be adjusted in conjunction with the display brightness settings of the in-vehicle smart tablet 10.

[0115] As can be seen, the tactile differences in shape, size, height, and / or surface texture between the mode control key 121 and the function execution key 122 in the in-vehicle smart tablet 10 provided in this application embodiment allow the operator to distinguish between the mode control key 121 and the function execution key 122 simply by touching them with their fingers. Combined with the spatial position feature of the mode control key 121 located at the top, the operator can complete the key positioning without looking at the panel, achieving safe blind operation without taking their hands off the steering wheel or their eyes off the work area. Furthermore, the status indicator light is integrated into the mode control key 121, visually indicating the currently active column through different colors. The operator does not need to look at the display screen 11 to see the highlighted area; they only need to glance at the mode control key 121 with their peripheral vision to confirm the current active column status, effectively shortening the status confirmation time, reducing distraction during driving, and thus further improving operational safety.

[0116] Please see Figure 14 and Figure 15 This application also provides a central control system 1 for an agricultural machinery cab, the central control system 1 for an agricultural machinery cab includes a central control console 20 and a vehicle-mounted smart tablet 10 as described in any embodiment of this application, the vehicle-mounted smart tablet 10 is installed on the side of the central control console 20 facing the operator, and the physical button module 12 is located on the side of the vehicle-mounted smart tablet 10 near the operator's hand operation area.

[0117] The agricultural machinery cab central control system 1 can be understood as a complete vehicle control assembly that integrates agricultural machinery status monitoring, implement action control, and human-machine interaction operation, providing an installation carrier for the vehicle-mounted smart tablet 10 and a basis for signal docking with the whole machine.

[0118] The agricultural machinery cab central control system 1 can be equipped with any of the following agricultural machinery equipment, including but not limited to tractors, harvesters, seeders, sprayers, fertilizer applicators, rotary tillers, balers, and silage harvesters, as well as construction machinery equipment such as excavators, loaders, and bulldozers, and other functional equipment.

[0119] The central control unit 20 can be understood as an installation base arranged in the cab of agricultural machinery for the centralized placement of various control components, with reserved assembly positions for the assembly of vehicle-mounted intelligent tablets.

[0120] The vehicle-mounted smart tablet 10 is a vehicle-mounted human-machine interaction terminal, integrating a display screen 11, a physical button module 12, and a controller 13. The physical button module 12, in conjunction with soft keys, enables multi-functional control of the operating equipment.

[0121] The side facing the operator can be understood as the side of the center console 20 facing the operator's normal operating position, that is, the front installation position of the center console facing the driver's line of sight after the driver sits in the driver's seat, which is convenient for intuitive viewing of the screen and for raising the hand to complete the button operation.

[0122] The operator's hand operating area refers to the space that the operator can reach when their hand is naturally extended while in a normal driving or operating posture.

[0123] In one possible embodiment, when the vehicle-mounted smart tablet 10 is installed on one side of the steering wheel in the cab of an agricultural machinery, for example, on the operator's right side, and the operator's right hand is naturally resting or holding on the side of the steering wheel, the physical button module 12 is located on the side frame of the vehicle-mounted smart tablet 10. At this time, the operator's right thumb or fingers can naturally touch the physical button module 12 and can smoothly complete the button operation.

[0124] As can be seen, the agricultural machinery cockpit central control system 1 provided in this embodiment allows the operator to input button commands through the physical button module 12, which can be converted into control commands for the agricultural machinery cockpit central control system 1, driving the agricultural machinery to perform corresponding mechanical actions or state switching. Simultaneously, the vehicle-mounted intelligent tablet 10 only needs a single mode control key 121 and multiple function execution keys 122 to control a multi-column, multi-row soft key matrix. All interactive operations can be achieved through physical buttons. Even when wearing heavy cold-weather gloves, operators can still complete button operations by applying trigger pressure to the physical buttons, thus solving the problem of touchscreen response failure or decreased accuracy in cold environments. Furthermore, operators can complete all button operations without taking their eyes off the work area, achieving blind operation and eliminating safety hazards caused by eye movement. Additionally, based on the narrow design of the physical button module 12, the vehicle-mounted intelligent tablet 10 in the agricultural machinery cockpit central control system 1 can flexibly adapt to various space-constrained installation locations, exhibiting good scene adaptability and compatibility.

[0125] In this application, the terms "embodiment" and "implementation" mean that a specific feature, structure, or characteristic described in connection with an embodiment can be included in at least one embodiment of this application. The appearance of these phrases in various locations throughout the specification does not necessarily refer to the same embodiment, nor are they independent or alternative embodiments mutually exclusive with other embodiments. Those skilled in the art will understand, explicitly and implicitly, that the embodiments described in this application can be combined with other embodiments. Furthermore, it should be understood that the features, structures, or characteristics described in the various embodiments of this application can be arbitrarily combined to form another embodiment that does not depart from the spirit and scope of the technical solution of this application, provided there is no contradiction between them.

[0126] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the above preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions to the technical solutions of this application should not depart from the spirit and scope of the technical solutions of this application.

Claims

1. A vehicle-mounted smart tablet, comprising a display screen, a physical button module, and a controller, characterized in that: The display screen is used to display the software interface of the virtual terminal. The software interface includes a soft key matrix display area, which contains multiple soft keys arranged in multiple columns. The physical button module includes a mode control key at the top and multiple function execution keys below it. The mode control key and the multiple function execution keys adopt a single-column vertical layout, and the column arrangement of the single-column vertical layout corresponds one-to-one with the column arrangement of any single-column soft key among the multiple soft keys. The controller is configured with a column status register, which is used to switch the value of the column status register when a double-click signal of the mode control key is received, so that multiple columns of the plurality of soft keys alternately become the currently active column, and control the display screen to display the currently active column in a highlighted manner; and to trigger the function of the soft key in the first row of the currently active column when a single click signal of the mode control key is received; and to trigger the function of the soft key in the currently active column corresponding to the triggered function execution key when a trigger signal of any function execution key among the plurality of function execution keys is received.

2. The in-vehicle smart tablet as described in claim 1, characterized in that, The mode control keys and the plurality of function execution keys, arranged in a single vertical column, are located on the side border of the in-vehicle smart tablet adjacent to the soft key matrix display area.

3. The in-vehicle smart tablet as described in claim 2, characterized in that, The multiple soft keys arranged in multiple columns are in a 2-column × 6-row layout, where the first row of each column is the page turning control key, and the second to sixth rows are function soft keys.

4. The in-vehicle smart tablet as described in claim 3, characterized in that, The function soft keys are configured as follows: Candidate soft keys are displayed in the middle area of ​​the display screen, and the middle area of ​​the screen supports manual page turning, or page turning is performed after selecting the page turning key through the mode control key; The candidate softkey can be dragged to the softkey matrix display area. When the candidate softkey is dragged to an empty key area in the softkey matrix display area, the candidate softkey falls into the empty key area and establishes a mapping relationship. When the candidate softkey is dragged to an occupied key area in the softkey matrix display area, the originally occupied softkey forms a blanking animation and the mapping relationship is released. The dragged candidate softkey is embedded into the occupied key area and a mapping relationship is established.

5. The in-vehicle smart tablet as described in claim 4, characterized in that, The mode control key is the power key; the soft key in the first row of the currently active column is the page-turning key, which performs left page-turning when the left column is active and right page-turning when the right column is active.

6. The in-vehicle smart tablet as described in any one of claims 1-5, characterized in that, The function that triggers the soft key corresponding to the triggered function execution key of the currently active column includes: Invoke the hardware execution module associated with the soft key to perform the function operation of the soft key; and / or, The function description information and / or function execution status of the soft key are displayed in the middle area of ​​the display screen.

7. The in-vehicle smart tablet as described in any one of claims 1-5, characterized in that, The controller presets a time threshold, and the controller is also used for: When two valid presses of the mode control key are detected within the time threshold, it is determined to be a double-click signal; A single press of the mode control key is detected, or two presses of the mode control key are detected within an interval exceeding the time threshold, which is determined to be a click signal.

8. The in-vehicle smart tablet as described in claim 3, characterized in that, The controller is also configured to: when the mode control key or the function execution key is triggered, control the display screen to display a visual identifier at the corresponding soft key position to indicate the currently selected row position.

9. The in-vehicle smart tablet as described in claim 8, characterized in that, The mode control key and the plurality of function execution keys have differentiated tactile structures to distinguish the mode control key from the function execution keys by touch. The mode control key integrates a status indicator light, which is used to indicate the column status of the currently active column with different colors.

10. A central control system for an agricultural machinery driver's cab, characterized in that, The system includes a center console and an in-vehicle smart tablet as described in any one of claims 1-9, wherein the in-vehicle smart tablet is installed on the side of the center console facing the operator, and the physical button module is located on the side of the in-vehicle smart tablet closer to the operator's hand area.

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