Electric control temporary lifting control method, controller and tractor

Abstract

The present invention relates to an electric control temporary lifting control method, a controller and a tractor. When the tractor is set for tillage depth operation, due to changes in resistance and terrain, the driver needs to temporarily adjust the tillage depth through the lifter. By triggering the temporary lifting button, the lifter quickly rises automatically and automatically descends to the previously set tillage depth at a certain time. The rising height of the temporary lift can be obtained by a speed measuring device or an algorithm. The temporary lift mode is determined by the time and manner of the driver triggering the button. This control method can effectively reduce the frequent adjustment of the operation tillage depth and the change of the operation quality, and increase the flexibility of operating the lift during operation.

Description

Technical Field

[0001] The present invention relates to the technical field of tractor control, and in particular to an electric control temporary lifting control method, a controller and a tractor. Background Art

[0002] The current electric control lifting of intelligent tractors is usually equipped with an angle sensor, a force sensor, a multi-functional lift, etc. It has functions such as force adjustment, position adjustment, and force-position comprehensive adjustment. After setting the tillage depth, the force sensor judges the compensation value required by the lift according to the load, and then controls the adjustment of the lift height. This kind of equipment is usually applied to plowing operations, etc.; in some working scenarios, such as in paddy fields, due to the accumulation of crop straw or sudden hardening of small pieces of soil during plowing, if the lifting system is not equipped with a force sensor, then the driver will have to adjust the tillage depth and readjust to the previous working depth after crossing these obstacles in order to ensure the working quality. The whole process is rather cumbersome to operate and the operation response is slow; therefore, it cannot meet the flexible requirements of temporary lifting operations.

[0003] On mechanical tractors with electric control lifting functions, they have the function of tillage depth adjustment. However, considering cost and other issues, they generally do not have methods such as force adjustment to achieve automatic tillage depth adjustment. Therefore, once the simple tillage depth adjustment is affected by terrain or resistance, the tillage depth needs to be reset, and the tillage depth adjustment is frequent, which affects the operation efficiency and operation quality. Summary of the Invention

[0004] Aiming at the defects of the prior art, the purpose of the present invention is to propose a temporary lifting control method, as well as a corresponding controller and tractor, to meet the temporary lifting requirements under different ground conditions.

[0005] In order to achieve the above purpose, the technical solution adopted by the present invention is:

[0006] An electric control temporary lifting control method. When the tractor is working in the field, the actual driving speed of the tractor is collected in real time by a speed measuring device. When the driver judges that the implement attached to the lift needs to be temporarily lifted according to the working ground conditions and the resistance state of the tractor, the tractor enters the temporary lifting mode by triggering the temporary lifting button. The lift rises to lift the implement to a certain height and returns to the previous lifting height after the temporary lifting mode is closed.

[0007] Further, the electric control temporary lifting button is a self-resetting button. The temporary lifting mode is divided into a long-press mode and a short-press mode: when the temporary lifting button is pressed and released within the set time, it is the short-press mode; when the temporary lifting button is pressed for more than the set time, it is the long-press mode; after the temporary lifting short-press mode or long-press mode is closed, the lift automatically descends to the previous tillage depth of the operation.

[0008] Further, in the temporary lifting long - press mode, the lifter remains in the current lifting state after the temporary lifting button is released. When the temporary lifting button is short - pressed again, the temporary lifting long - press mode is turned off, and the lifter returns to the previous value.

[0009] Further, after the temporary lifting short - press mode is activated, it is turned off in the following way: Set a period of time. When the temporary lifting button is triggered to enter the short - press mode and then released, the timing starts. When the timing is greater than the set period of time, the temporary lifting short - press mode is automatically turned off. This "period of time" is generated through calibration; when it is not calibrated, by default, after the temporary lifting button is triggered to enter the short - press mode and then released, the temporary lifting short - press mode is turned off.

[0010] Further, the "period of time" is calibrated as follows: The tractor control system is powered on, and the engine is not started. The temporary lifting button is continuously pressed 3 times within 2 seconds. At this time, the instrument light will show that the temporary lifting time setting light is on. The time between the lighting of this light and the next press of the temporary lifting button is used as the time for the temporary lifting short - press mode to maintain the lifting state.

[0011] Further, when the temporary lifting button is triggered, the lifting height to be temporarily lifted is calculated by a speed - measuring device; when there is no speed - measuring device, the lifting height for temporary lifting is calculated as a percentage of the current lifting value.

[0012] Further, the method for calculating the lifting height to be temporarily lifted by the speed - measuring device is specifically as follows: The speed - measuring device on the tractor real - time detects the driving speed of the tractor. When the driver presses the temporary lifting button, the control algorithm predicts the value of the lifting height increase based on the speed decrease value in the previous 3 seconds at this time.

[0013] A controller, which is used to execute the above - mentioned electric - control temporary lifting control method.

[0014] A tractor, which includes the above - mentioned controller.

[0015] Beneficial effects: In the control method of the present invention, when the driver observes the terrain conditions or the tractor state, according to the need, the self - reset temporary lifting button is operated. When the temporary lifting button is pressed, the lifter will rise. After the temporary lifting button is short - pressed and then released, it will automatically descend to the previous tillage depth after a period of time. When the temporary lifting button is long - pressed for more than the set time, the temporary lifting continues to maintain the current height. When the driver releases the temporary lifting button and presses the temporary lifting button again, the lifting descends back to the previous tillage depth. The holding time of the temporary lifting can be set, and the height of the temporary lifting can be automatically converted or calculated as a percentage of the current lifting height.

[0016] The control method of the present invention can flexibly respond to the driver's temporary lifting requirements for an electronically controlled lifting tractor with a single-position adjustment function, and is easy to operate. It meets the need for temporarily lifting the tillage depth during operation, and has the advantages of low cost, fast response, and flexible application in working conditions such as paddy field, rotary tillage, and ploughing operations, and effectively meets the needs of the tractor with attached implements for operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the electronic control system of the present invention;

[0018] Figure 2 is a flowchart for obtaining the rising value of the temporary lift in the embodiment of the present invention;

[0019] Figure 3 is a control logic flowchart of the temporary lift in the embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The present invention will be further described in detail below with reference to the drawings and specific embodiments.

[0021] As Figure 1 shown, the electronic control system involved in the present invention consists of a central controller module, a temporary lift switch, a speed measuring device, an angle sensor, a lift valve group, an instrument, and an engine controller. Among them, the speed measuring device is used to detect the vehicle speed of the tractor in real time, the angle sensor is used to detect the lift height, the temporary lift switch is used to activate the temporary lift function, the engine controller outputs the engine speed, and the central controller is used to process various data and logics and control the lift valve group, and output the information to the instrument for display.

[0022] Based on the above electronic control system, the present invention proposes a control method for the temporary lift of a tractor. When the tractor is operating in the field, the speed measuring device collects the actual driving speed of the tractor in real time. When the driver judges that the implement attached to the lift needs to be temporarily lifted by judging the working conditions of the operation site and the resistance state of the tractor, the driver presses the temporary lift button to enter the temporary lift mode.

[0023] In the temporary lift mode, the rising value of the temporary lift is calculated based on the value calculated by the speed measuring device or the percentage of the current lift value, and the mode and control of the temporary lift are determined by the time and method of the driver triggering the temporary lift button, and then the temporary action of the lift is controlled.

[0024] The rising value of the temporary lift, when a speed measuring device is installed, is determined by the speed measuring device according to the decrease value of the vehicle speed in the first few seconds before activating the temporary lift. When no speed measuring device is installed, this value is calculated by the percentage of the current lift height.

[0025] Figure 2Flow chart for obtaining the temporary lift rise value in the embodiments of the present invention.

[0026] First, in step S201, it is judged when the temporary lift button is pressed. If the temporary lift button is not pressed, wait until the temporary lift button is pressed. If the temporary lift button is pressed, enter S203.

[0027] In step S203, it is judged whether a speed measuring device is installed. If a speed measuring device is installed, the rise value of the temporary lift is calculated by the speed measuring device according to the vehicle speed decrease ratio within 3 seconds before the temporary lift button is pressed. If no speed measuring device is installed, the temporary lift rise value is calculated as a percentage X of the lift height when the temporary lift is pressed.

[0028] After determining the temporary lift rise value according to the above process, control the requested lift value to work.

[0029] Further, the temporary lift mode of the present invention is divided into a short - press mode and a long - press mode; when the temporary lift button is pressed and released within the set time of the long - press mode, this is the short - press mode. After the short - press mode of the temporary lift exits, it returns to the previous tillage depth; when the temporary lift button is pressed for more than the set time of the long - press mode, this is the long - press mode of the temporary lift. After entering the long - press mode of the temporary lift, when the temporary lift button is released, the temporary lift function does not exit. When the temporary lift button is pressed again, the long - press mode of the temporary lift is closed and it returns to the previous tillage depth.

[0030] After the short - press temporary lift function is activated, it can be closed in the following way: set a time. After the short - press temporary lift button is activated and released, start timing. When the time is greater than the set time, the short - press temporary lift function is automatically closed. The set time can be generated by calibration. When not calibrated, by default, after the short - press temporary lift button is activated and then released, the short - press temporary lift function is closed.

[0031] Specifically, the temporary lift in the short - press mode automatically drops to the tillage depth after a period of time. The "period of time" involved is calibrated in the following way;

[0032] This value can be set by the driver before operation: when the tractor controller is powered on and the engine is not started, when the driver quickly presses the temporary lift button 3 times within 2 seconds, the identification light on the instrument is activated. Start timing from this moment. The identification light flashes once every 1 second. When the driver feels the time is appropriate, press the temporary lift button again and release it. At this time, the identification light will flash quickly twice and then go out; the time between pressing the temporary lift button 3 times continuously and the last time pressing the temporary lift button will be used as the "period of time" of the temporary lift. During normal operation, when the driver presses and releases the short - press temporary lift button, start timing. After this period of time, the temporary lift will automatically return to the previous tillage depth.

[0033] The control method described in the present invention includes:

[0034] When the temporary lifting button is pressed, timing starts, and at the same time, the lifter is controlled to rise. The rising value is determined by the speed measuring device or the current lifting height. If the temporary lifting button is released within the specified time, this is the temporary lifting short - press mode. After the temporary lifting short - press mode is closed, the lifter will immediately descend to the tillage depth.

[0035] When the temporary lifting button is pressed, timing starts. If the temporary lifting button is not released within the set short - press time, it enters the temporary lifting long - press mode. When the temporary lifting button is released at this time, the long - press temporary lifting mode remains active, and the lifter maintains the current height. When the temporary lifting button is pressed again, the long - press temporary lifting function is closed, and at this time, the lifter will descend to the tillage depth.

[0036] Figure 3 It is the control logic flowchart of the temporary lifting in the embodiment of the present invention.

[0037] In step S301, it is judged whether the temporary lifting button is pressed. If not, wait for it to be pressed. If the temporary lifting button is pressed, enter S303 to start timing, and at the same time, control the lifter to rise, and wait to enter step S305.

[0038] In step S305, it is judged whether the time elapsed since the temporary lifting button was pressed is greater than the Y value. If the time is not greater than the Y value, enter step S307 to activate the temporary lifting short - press mode.

[0039] In step S311, it is judged whether the short - press mode is released. When the temporary lifting button is released within the Y - value time, the short - press mode is released, and it will enter step S315, where the temporary lifting will be closed and the lifting will return to the set tillage depth. In step S311, if the short - press mode is not released, return to step S305 to judge whether it is still in the short - press mode.

[0040] In step S305, when the button is pressed and timing starts, when the time since the button was pressed is greater than the Y value, enter step S309, where the temporary lifting long - press mode is activated. At this time, when the temporary lifting button is released, it still remains in the temporary lifting long - press mode.

[0041] When in the temporary lifting long - press mode, judge step S313. When in the temporary lifting long - press mode, when the temporary lifting button is pressed again, the temporary lifting long - press mode is released, and it will enter step S315, where the temporary lifting will be closed and the lifting will return to the set tillage depth. If the temporary lifting long - press mode is not released in step S313, wait for the long - press mode to be released.

[0042] Another embodiment of the present invention further provides a controller, which executes the temporary lifting control method described in any of the above embodiments. For the details of its specific embodiments, reference may be made to the above text and will not be elaborated here.

[0043] The present invention also provides a tractor, which includes the above controller and executes the temporary lifting control method described in any of the above embodiments through the controller. For the details of its specific embodiments, reference may be made to the above text.

[0044] The above are only the preferred embodiments of the present invention and do not impose any form of limitation on the present invention. Although the present invention has been disclosed above with the preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments by using the disclosed technical content within the scope of the technical solution of the present invention. However, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. An electric control temporary lifting control method, characterized in that, When the tractor is operating in the field, the actual driving speed of the tractor is collected in real time by a speed measuring device. When the driver judges that the implement attached to the lift needs to be temporarily lifted based on the working conditions of the field and the resistance state of the tractor, the tractor enters the temporary lift mode by triggering the temporary lift button. The lift raises the implement to a certain height and returns to the previous lift height after the temporary lift mode is turned off. When the temporary lift button is triggered, the lift height required for temporary lift is calculated by the speed measuring device. When no speed measuring device is equipped, the lift height for temporary lift is calculated as a percentage of the current lift value.

2. The electric control temporary lifting control method according to claim 1, characterized in that The temporary lift button is a self-resetting button. The temporary lift mode is divided into a long-press mode and a short-press mode: when the temporary lift button is pressed and released within the set time, it is the short-press mode; when the temporary lift button is pressed for more than the set time, it is the long-press mode. After the temporary lift short-press mode or long-press mode is turned off, the lift automatically descends to the previous tillage depth of the operation.

3. The electronic control temporary lifting control method according to claim 2, characterized in that In the temporary lift long-press mode, the lift remains in the current lift state after the temporary lift button is released. When the temporary lift button is pressed again briefly, the temporary lift long-press mode is turned off and the lift returns to the previous tillage depth of the operation.

4. The electronic control temporary lifting control method according to claim 2, wherein After the temporary lift short-press mode is activated, it is turned off in the following way: a period of time is set. When the temporary lift button is triggered to enter the short-press mode and then released, the timing starts. When the timing is greater than the set period of time, the temporary lift short-press mode is automatically turned off. This "period of time" is generated by calibration. When not calibrated, by default, after the temporary lift button is triggered to enter the short-press mode and then released, the temporary lift short-press mode is turned off.

5. The electronic control temporary lifting control method according to claim 4, characterized in that, The set "period of time" is calibrated in the following way: when the tractor control system is powered on and the engine is not started, the temporary lift button is continuously pressed 3 times within 2 seconds. At this time, the instrument light will show that the temporary lift time setting light is on. The time between the lighting of this light and the next press of the temporary lift button is used as the time for the temporary lift short-press mode to maintain the lift state.

6. The electronic control temporary lifting control method according to claim 1, wherein The method for calculating the lift height required for temporary lift by the speed measuring device is specifically as follows: the speed measuring device on the tractor detects the driving speed of the tractor in real time. When the driver presses the temporary lift button, the control algorithm predicts the value of the lift increase based on the decrease in vehicle speed in the previous 3 seconds at this time.

7. A controller, characterized in that, The controller is used to execute the electric control temporary lift control method according to any one of claims 1-6.

8. A tractor, characterized in that, The tractor includes the controller according to claim 7.

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