Power take-off control method and device of commercial vehicle loading system

Abstract

The invention provides a power take-off control method and device for an upper system of a commercial vehicle, and belongs to the technical field of power take-off control. The method comprises the steps that when the commercial vehicle enters a power take-off speed regulation state, a power take-off control mode is determined in response to a mode selection signal of a mode selection switch; the power take-off control mode comprises a bus mode and a hard wire mode; when the power take-off control mode is a hard wire mode, a speed regulation mode is determined in response to a speed regulation signal of a speed regulation switch, and when the power take-off control mode is a bus mode, a speed regulation mode is determined in response to a message signal of a bus; adjusting the rotating speed of the engine based on the speed adjusting mode; the speed regulation mode comprises a continuous adjustable power take-off mode, a constant-rotating-speed power take-off control mode, a rotating-speed limiting mode and a one-key constant-speed mode. By setting four speed regulation modes, free switching of the speed regulation modes in an upper-loading power take-off speed regulation scene is realized, and the universality of the commercial vehicle upper-loading system is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of power take-off control, and in particular to a power take-off control method and device for a commercial vehicle upper mounting system. Background Art

[0002] Engineering vehicles such as sanitation vehicles have on-board operating equipment. The operating equipment usually uses a power take-off to take power from the gearbox of the vehicle chassis to drive the mechanisms on the operating equipment.

[0003] At present, traditional power take-off control methods are mostly aimed at power take-off control in parking power take-off situations, and the speed regulation form supported by the power take-off control process is single, which cannot meet the power take-off speed regulation requirements in various situations and has poor versatility.

[0004] Therefore, there is an urgent need to provide a power take-off control method and device for a commercial vehicle body system, which can be used to realize multiple speed regulation forms, so as to achieve the adaptability of the body power take-off speed regulation form and the scene, thereby improving the versatility of the commercial vehicle body system. Summary of the invention

[0005] In view of this, it is necessary to provide a power take-off control method and device for a commercial vehicle body system to solve the technical problem in the prior art that the body power take-off speed regulation form is single and cannot be adapted to a variety of scenarios, resulting in poor versatility of the commercial vehicle body system.

[0006] On the one hand, in order to solve the above technical problems, the present invention provides a power take-off control method of a commercial vehicle upper mounting system, comprising: When the commercial vehicle enters the power take-off speed regulation state, the power take-off control mode is determined in response to the mode selection signal of the mode selection switch; the power take-off control mode includes a bus mode and a hard line mode; When the power take-off control mode is a hard-line mode, the speed control mode is determined in response to a speed control signal of a speed control switch; when the power take-off control mode is a bus mode, the speed control mode is determined in response to a message signal of a bus; The engine speed is adjusted based on the speed regulation mode; the speed regulation mode includes a continuously adjustable power take-off mode, a constant speed power take-off control mode, a speed limiting mode and a one-button constant speed mode.

[0007] In a possible implementation, the speed control switch includes a speed control enabling switch, a speed control acceleration switch, and a speed control deceleration switch; and determining the speed control mode in response to the speed control signal of the speed control switch includes: When the speed acceleration switch and the speed deceleration switch are simultaneously pressed for a preset time and then released, and the speed control enabling switch is pressed, a first mode speed control signal is generated, and the speed control mode is switched to the continuously adjustable power take-off mode in response to the first mode speed control signal; When the speed acceleration switch and the speed deceleration switch are pressed for a preset time and then released, and the speed acceleration switch is pressed a preset number of times, a second mode speed regulation signal is generated, and the speed regulation mode is switched to the fixed speed adjustable power take-off control mode in response to the second mode speed regulation signal; When the speed acceleration switch and the speed deceleration switch are pressed for a preset time and then released, and the speed deceleration switch is pressed for a preset number of times, a third mode speed regulation signal is generated, and the speed regulation mode is switched to the speed limit mode in response to the third mode speed regulation signal; When the speed acceleration switch and the speed deceleration switch are pressed for a preset time and then released, and the speed enable switch is pressed a preset number of times, a fourth mode speed control signal is generated, and the speed control mode is switched to the one-button constant speed mode in response to the fourth mode speed control signal.

[0008] In a possible implementation, the method further includes: In response to a brake pressing signal, storing the speed control mode; The speed control mode switching success information is sent to the display screen of the commercial vehicle and displayed.

[0009] In a possible implementation, when the speed regulation mode is the continuously adjustable power take-off mode, adjusting the engine speed based on the speed regulation mode includes: In response to the activation signal of the speed control enabling switch, when the speed control acceleration switch is pressed for the first time, the engine speed is adjusted to a first set speed, and when the speed control deceleration switch is pressed for the first time, the engine speed is adjusted to a second set speed; In response to the activation signal, when the speed acceleration switch is long pressed, the engine speed is increased from the current speed by a first acceleration adjustment step, and when the speed acceleration switch is not pressed for the first time, the engine speed is increased from the current speed by a second acceleration adjustment step; In response to the activation signal, when the speed deceleration switch is long pressed, the engine speed is reduced from the current speed by a first deceleration adjustment step; when the speed deceleration switch is not pressed for the first time, the engine speed is reduced from the current speed by a second deceleration adjustment step.

[0010] In a possible implementation, when the speed regulation mode is the constant speed power take-off control mode, adjusting the engine speed based on the speed regulation mode includes: When the speed regulation enabling switch is switched once within a set time period, the engine speed is controlled to switch between a plurality of set speeds in sequence.

[0011] In a possible implementation, when the speed regulation mode is the speed limiting mode, adjusting the engine speed based on the speed regulation mode includes: In response to the activation signal of the speed regulation enabling switch, the engine speed is controlled not to exceed a speed threshold.

[0012] In a possible implementation, when the speed regulation mode is the one-button fixed speed mode, adjusting the engine speed based on the speed regulation mode includes: In response to the activation signal of the speed regulation enabling switch, the engine speed is controlled to be a preset value.

[0013] In a possible implementation, the message signal includes a speed regulation mode signal, and the message signal of the response bus determines the speed regulation mode, including: The speed regulation mode is determined based on a preset mapping relationship between the speed regulation mode signal and the speed regulation mode and the speed regulation mode signal.

[0014] In a possible implementation, the method further includes: In response to a switch activation signal of a speed control system activation switch, vehicle state parameters of the commercial vehicle are obtained; the vehicle state parameters include engine speed, vehicle speed, clutch state, service brake state, and parking brake state; When the engine speed is within the normal speed range, the vehicle speed is zero, the clutch state is the clutch is not pressed, the service brake state is the brake is not pressed, and the parking brake state is not enabled, the commercial vehicle is controlled to enter the power take-off speed regulation state.

[0015] On the other hand, the present invention also provides a power take-off control device for a commercial vehicle upper mounting system, comprising: A power take-off control mode determination unit, used for determining a power take-off control mode in response to a mode selection signal of a mode selection switch when the commercial vehicle enters a power take-off speed regulation state; the power take-off control mode includes a bus mode and a hard line mode; A speed control mode determining unit, for determining the speed control mode in response to a speed control signal of a speed control switch when the power take-off control mode is a hard line mode, and for determining the speed control mode in response to a message signal of a bus when the power take-off control mode is a bus mode; The engine speed regulating unit is used to regulate the engine speed based on the speed regulation mode; the speed regulation mode includes a continuously adjustable power take-off mode, a constant speed power take-off control mode, a speed limiting mode and a one-button constant speed mode.

[0016] The beneficial effects of the present invention are as follows: the power take-off control method of the commercial vehicle upper system provided by the present invention achieves the purpose of speed control by both bus and hard line by setting the power take-off control mode to include bus mode and hard line mode, thereby improving the diversity of speed control modes. In addition, the power take-off control mode is determined by the mode selection signal of the mode selection switch, thereby avoiding the problem of request conflict when there are two power take-off requests at the same time, namely: bus request and hard line request, thereby achieving arbitration of the bus and hard line modes, thereby improving the vehicle safety during the power take-off control process.

[0017] Furthermore, the present invention arranges speed regulation modes including four modes: continuously adjustable power take-off mode, constant speed power take-off control mode, speed limit mode and one-button constant speed mode, thereby improving the diversity of speed regulation modes, and further realizing free switching of speed regulation modes in the upper-mounted power take-off speed regulation scenario, adapting to various modification requirements, and improving the versatility of the commercial vehicle upper-mounted system. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 A schematic flow chart of an embodiment of a method for controlling a power take-off of a commercial vehicle upper mounting system provided by the present invention; Figure 2 A schematic diagram of a flow chart of an embodiment of generating speed regulation mode switching success information provided by the present invention; Figure 3 A schematic diagram of a flow chart of an embodiment of the present invention for determining whether to enter a power take-off and speed regulation state; Figure 4 A schematic structural diagram of an embodiment of a power take-off control device for a commercial vehicle upper mounting system provided by the present invention; Figure 5 A schematic structural diagram of an embodiment of a commercial vehicle provided by the present invention. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0021] It should be understood that the schematic drawings are not drawn to scale. The flowchart used in the present invention shows the operations implemented according to some embodiments of the present invention. It should be understood that the operations of the flowchart can be implemented out of order, and the steps without logical context can be reversed in order or implemented simultaneously. In addition, those skilled in the art, under the guidance of the content of the present invention, can add one or more other operations to the flowchart, and can also remove one or more operations from the flowchart. Some of the block diagrams shown in the accompanying drawings are functional entities, which do not necessarily correspond to physically or logically independent entities. These functional entities can be implemented in software form, or in one or more hardware modules or integrated circuits, or in different networks and / or processor systems and / or microcontroller systems.

[0022] Reference to an "embodiment" herein means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0023] The present invention provides a power take-off control method and device for a commercial vehicle upper mounting system, which are respectively described below.

[0024] The embodiment of the present invention provides a power take-off control method for a commercial vehicle upper mounting system, such as Figure 1 As shown, the power take-off control method of the commercial vehicle upper system includes: S101, when the commercial vehicle enters the power take-off speed regulation state, responding to the mode selection signal of the mode selection switch to determine the power take-off control mode; the power take-off control mode includes a bus mode and a hard line mode; S102, when the power take-off control mode is the hard line mode, responding to the speed control signal of the speed control switch to determine the speed control mode, and when the power take-off control mode is the bus mode, responding to the message signal of the bus to determine the speed control mode; S103, adjusting the engine speed based on the speed regulation mode; the speed regulation mode includes a continuously adjustable power take-off mode, a constant speed power take-off control mode, a speed limit mode and a one-button constant speed mode.

[0025] Among them, the mode selection switch can be switched when power take-off and speed regulation are not performed.

[0026] It should be understood that the message signal of the bus is a CAN message signal.

[0027] It should be noted that: in order to avoid mode conflicts, only one of the above four speed regulation modes can be selected at the same time.

[0028] Compared with the prior art, the power take-off control method of the commercial vehicle upper system provided by the embodiment of the present invention achieves the purpose of speed control through both bus and hard line by setting the power take-off control mode to include bus mode and hard line mode, and improves the diversity of speed control modes. In addition, the power take-off control mode is determined by the mode selection signal of the mode selection switch, avoiding the request conflict problem when there are two power take-off requests at the same time, namely: bus request and hard line request, realizing arbitration of the bus and hard line modes, and improving the vehicle safety during the power take-off control process.

[0029] Furthermore, the embodiment of the present invention arranges the speed regulation modes to include four modes: continuously adjustable power take-off mode, constant speed power take-off control mode, speed limit mode and one-button constant speed mode, thereby improving the diversity of the speed regulation modes, and further realizing the free switching of the speed regulation modes in the upper-mounted power take-off speed regulation scenario, adapting to various modification requirements, and improving the versatility of the commercial vehicle upper-mounted system.

[0030] In some embodiments of the present invention, the speed control switch includes a speed control enabling switch, a speed control accelerating switch, and a speed control decelerating switch; then the speed control mode is determined in response to the speed control signal of the speed control switch in step S102, including: When the speed acceleration switch and the speed deceleration switch are pressed for a preset time and then released, and the speed enabling switch is pressed, a first mode speed regulation signal is generated, and the speed regulation mode is switched to the continuously adjustable power take-off mode in response to the first mode speed regulation signal; When the speed acceleration switch and the speed deceleration switch are pressed for a preset time and then released, and the speed acceleration switch is pressed a preset number of times, a second mode speed regulation signal is generated, and the speed regulation mode is switched to a fixed speed adjustable power take-off control mode in response to the second mode speed regulation signal; When the speed acceleration switch and the speed deceleration switch are pressed for a preset time and then released, and the speed deceleration switch is pressed for a preset number of times, a third mode speed regulation signal is generated, and the speed regulation mode is switched to the speed limit mode in response to the third mode speed regulation signal; When the speed acceleration switch and the speed deceleration switch are pressed for a preset time and then released, and the speed enable switch is pressed a preset number of times, a fourth mode speed control signal is generated, and the speed control mode is switched to the one-button constant speed mode in response to the fourth mode speed control signal.

[0031] The embodiment of the present invention realizes switching of four speed regulation modes by setting different state combinations of the speed regulation enable switch, the speed regulation acceleration switch and the speed regulation deceleration switch. The logic is clear and no additional switches are required, thereby reducing the speed regulation control cost.

[0032] It should be noted that: in order to inform the driver that the hard-line speed control is currently in effect, during the process of determining any speed control mode, when the speed acceleration switch and the speed deceleration switch are pressed for a preset time and then released, a prompt message is sent to the display screen of the commercial vehicle, and the prompt message is specifically: "Please select the speed control mode". After observing this prompt message, the driver can select the speed control mode by pressing the speed control enable switch, pressing the speed acceleration switch for a preset number of times, pressing the speed deceleration switch for a preset number of times, or pressing the speed control enable switch for a preset number of times.

[0033] It should also be noted that in actual application scenarios, abnormal operations may occur, such as failure to click the preset number of times. In order to achieve reasonable arbitration for this situation, in some embodiments of the present invention, when abnormal operations occur during the speed adjustment mode selection process, the speed adjustment mode is switched to the continuously adjustable force take-off mode. That is, the continuously adjustable force take-off mode is the default mode.

[0034] Among them, the preset time length, the preset number of clicks, etc. can be reasonably set according to the actual application scenario. In a specific embodiment of the present invention, the preset time length is 5S, and the preset number of clicks is 3 times.

[0035] In order to make the driver aware of the speed regulation mode after switching to avoid the speed regulation mode after switching not being the expected speed regulation mode of the driver, in some embodiments of the present invention, for example Figure 2 As shown, after step S102, the following further includes: S201, responding to a brake pressing signal, storing a speed control mode; S202: Send a speed control mode switching success message to a display screen of the commercial vehicle and display it.

[0036] The switching success information is specifically: "Speed ​​regulation mode switching is successful".

[0037] The embodiment of the present invention stores the speed regulation mode in response to the brake pressing signal, thereby avoiding unexpected speed regulation mode switching. The speed regulation mode determination process requires the driver to press the brake signal, thereby ensuring the reliability of the speed regulation mode switching. Moreover, after the speed regulation mode switching is completed, the speed regulation mode switching success information is displayed on the display screen, so that the driver is informed that the speed regulation mode switching operation has been performed, thereby further avoiding no switching, thereby further ensuring the reliability of the speed regulation mode switching.

[0038] In some embodiments of the present invention, when the speed regulation mode is the continuously adjustable power take-off mode, step S103 is specifically as follows: In response to the activation signal of the speed control enable switch, when the speed control acceleration switch is pressed for the first time, the engine speed is adjusted to the first set speed, and when the speed control deceleration switch is pressed for the first time, the engine speed is adjusted to the second set speed; In response to the activation signal, when the speed control acceleration switch is long pressed, the engine speed is increased from the current speed by a first acceleration adjustment step; when the speed control acceleration switch is not pressed for the first time, the engine speed is increased from the current speed by a second acceleration adjustment step; In response to the activation signal, when the speed deceleration switch is long pressed, the engine speed is reduced from the current speed by the first deceleration adjustment step. When the speed deceleration switch is not pressed for the first time, the engine speed is reduced from the current speed by the second deceleration adjustment step.

[0039] It should be noted that the first acceleration adjustment step length and the second acceleration adjustment step length are in different forms. Specifically, the first acceleration adjustment step length is X rpm / s, and the second acceleration adjustment step length is X rpm / time.

[0040] Similarly, the first deceleration adjustment step and the second deceleration adjustment step are also in different forms. Specifically, the first deceleration adjustment step is X rpm / s, and the second deceleration adjustment step is X rpm / time.

[0041] Among them, long press refers to a press action that lasts longer than 1 second, and tap refers to a press action that lasts less than 1 second.

[0042] Specifically, the first set speed is 1200rpm, the second set speed is 900rpm, the first acceleration adjustment step is 10rpm / s, the second acceleration adjustment step is 10rpm / time, the first deceleration adjustment step is 10rpm / s, and the second deceleration adjustment step is 10rpm / time.

[0043] It should also be noted that the first set speed, the second set speed, the first acceleration adjustment step, the second acceleration adjustment step, the first deceleration adjustment step and the second deceleration adjustment step can all be calibrated according to the actual application scenario, and all support custom modifications to adapt to various forms of modification speed regulation requirements, thereby further improving the versatility of the commercial vehicle mounted system.

[0044] In some embodiments of the present invention, when the speed regulation mode is a constant speed power take-off control mode, step S103 is specifically as follows: When the speed control enable switch is switched once within the set time period, the engine speed is controlled to switch between multiple set speeds in sequence.

[0045] Specifically, when the time for the speed regulation enabling switch to switch between ON-OFF-ON is less than 1 second, the engine speed is controlled to switch between a plurality of set speeds in sequence.

[0046] The plurality of set rotational speeds may be X rpm, X+200 rpm, X+400 rpm, X+600 rpm, and X+800 rpm. Specifically, the plurality of set rotational speeds may be 1000 rpm, 1200 rpm, 1400 rpm, 1600 rpm, and 1800 rpm.

[0047] It should be understood that, in addition to the above specific embodiments, the set duration and multiple set speeds can also be adjusted according to actual needs and set to other values, which will not be described in detail here.

[0048] It should be noted that: when the speed control enable switch switches between ON and OFF for more than 1 second, it is considered that the constant speed power take-off control mode is closed.

[0049] In some embodiments of the present invention, when the speed regulation mode is the speed limiting mode, step S103 is specifically as follows: In response to the activation signal of the speed control enabling switch, the engine speed is controlled not to exceed the speed threshold.

[0050] When the speed regulation mode is the one-button fixed speed mode, step S103 is specifically as follows: In response to the activation signal of the speed control enable switch, the engine speed is controlled to a preset value.

[0051] Specifically, the rotation speed threshold is 1400 rpm, and the preset value is 1200 rpm.

[0052] Among them, the speed threshold and the preset value can be calibrated according to the actual scenario and are not limited to the above specific values.

[0053] In some embodiments of the present invention, the message signal includes a speed regulation mode signal, and the speed regulation mode is determined in response to the message signal of the bus in step S102, including: The speed regulation mode is determined based on a preset mapping relationship between the speed regulation mode signal and the speed regulation mode and the speed regulation mode signal.

[0054] The bus speed regulation method in the embodiment of the present invention distinguishes different speed regulation methods through a speed regulation mode signal, and can adapt to increasingly diverse modification speed regulation requirements by adding or adjusting the speed regulation mode signal, thereby further improving the versatility of the commercial vehicle upper installation system.

[0055] In a specific embodiment of the present invention, the speed regulation mode signal includes 00, 01, 02, 03 and 04, wherein 01 is a continuously adjustable power take-off mode, 02 is a constant speed power take-off mode, 03 is a speed limiting mode, 04 is a one-button constant speed mode, and 00 does not activate the speed regulation mode.

[0056] It should be noted that different speed regulation modes under the bus speed regulation mode can be determined according to the speed specific value request signal, speed increase rate signal, and speed decrease rate signal in the message signal.

[0057] In order to avoid erroneous operation of the power take-off control and further ensure the safety and reliability of the power take-off control process, in some embodiments of the present invention, Figure 3 As shown, before step S101, it also includes: S301, responding to a switch activation signal of a speed control system activation switch, obtaining vehicle state parameters of the commercial vehicle; the vehicle state parameters include engine speed, vehicle speed, clutch state, service brake state, and parking brake state; S302: When the engine speed is within the normal speed range, the vehicle speed is zero, the clutch state is the clutch not pressed, the service brake state is the brake not pressed, and the parking brake state is not enabled, the commercial vehicle is controlled to enter the power take-off speed regulation state.

[0058] The power take-off and speed regulation control process of the embodiment of the present invention is divided into two levels of control, namely: speed regulation system activation switch-speed regulation enable switch. By setting a two-level hierarchical activation mechanism, the possibility of misoperation is reduced, and the safety and reliability of power take-off and speed regulation control are improved. In addition, the embodiment of the present invention determines whether to enter the power take-off and speed regulation state based on the vehicle state parameters, ensuring that the speed regulation function is turned on again in a safe state, further improving the safety and reliability of power take-off and speed regulation.

[0059] It should be noted that when the speed control system activation switch is not turned on, the speed control function will not be turned on even if the speed control system enable switch is activated.

[0060] In order to better implement the power take-off control method of the commercial vehicle upper mounted system in the embodiment of the present invention, based on the power take-off control method of the commercial vehicle upper mounted system, the embodiment of the present invention also provides a power take-off control device of the commercial vehicle upper mounted system, such as Figure 4 As shown, the power take-off control device 400 of the commercial vehicle upper system includes: A power take-off control mode determination unit 401 is used to determine the power take-off control mode in response to a mode selection signal of a mode selection switch when the commercial vehicle enters a power take-off speed regulation state; the power take-off control mode includes a bus mode and a hard line mode; The speed control mode determining unit 402 is used to determine the speed control mode in response to the speed control signal of the speed control switch when the power take-off control mode is the hard line mode, and to determine the speed control mode in response to the message signal of the bus when the power take-off control mode is the bus mode; The engine speed regulating unit 403 is used to regulate the engine speed based on the speed regulating mode; the speed regulating mode includes a continuously adjustable power take-off mode, a constant speed power take-off control mode, a speed limiting mode and a one-button constant speed mode.

[0061] It should be noted that the power take-off control device 400 of the commercial vehicle body system provided in the above embodiment can implement the technical solution described in the power take-off control method embodiment of the commercial vehicle body system. The specific implementation principles or specific implementation details of the above modules or units can refer to the corresponding contents in the power take-off control method embodiment of the commercial vehicle body system, which will not be described one by one here.

[0062] like Figure 5 As shown, the present invention also provides a commercial vehicle 500. The commercial vehicle 500 includes a processor 501, a memory 502 and a display 503. Figure 5 Only some of the components of the commercial vehicle 500 are shown, but it should be understood that implementation of all of the components shown is not required, and more or fewer components may alternatively be implemented.

[0063] In some embodiments, the processor 501 may be a central processing unit (CPU), a microprocessor or other data processing chip, and is used to run program codes or process data stored in the memory 502, such as the power take-off control method of the commercial vehicle upper system in the present invention.

[0064] In some embodiments of the present invention, processor 501 may be a single server or a server group. The server group may be centralized or distributed. In some embodiments, processor 501 may be local or remote. In some embodiments, processor 501 may be implemented in a cloud platform. In one embodiment, the cloud platform may include a private cloud, a public cloud, a hybrid cloud, a community cloud, a distributed cloud, an internal cloud, a multi-cloud, etc., or any combination thereof.

[0065] In some embodiments, the memory 502 may be an internal storage unit of the commercial vehicle 500 , such as a hard disk or a memory of the commercial vehicle 500 .

[0066] Furthermore, the memory 502 may include both an internal storage unit and an external storage device of the commercial vehicle 500. The memory 502 is used to store application software installed in the commercial vehicle 500 and various data.

[0067] In some embodiments, the display 503 may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, an OLED (Organic Light-Emitting Diode) touch device, etc. The display 503 is used to display information of the commercial vehicle 500 and to display a visual user interface. The components 501-503 of the commercial vehicle 500 communicate with each other via a system bus.

[0068] In some embodiments of the present invention, when the processor 501 executes the power take-off control program of the commercial vehicle body system in the memory 502, the following steps may be implemented: When the commercial vehicle enters the power take-off speed regulation state, the power take-off control mode is determined in response to the mode selection signal of the mode selection switch; the power take-off control mode includes a bus mode and a hard line mode; When the power take-off control mode is the hard line mode, the speed control mode is determined by responding to the speed control signal of the speed control switch; when the power take-off control mode is the bus mode, the speed control mode is determined by responding to the message signal of the bus; The engine speed is adjusted based on the speed control mode; the speed control mode includes continuously adjustable power take-off mode, constant speed power take-off control mode, speed limit mode and one-button constant speed mode.

[0069] It should be understood that: when the processor 501 executes the power take-off control program of the commercial vehicle body system in the memory 502, in addition to the above functions, other functions can also be implemented. For details, please refer to the description of the corresponding method embodiment above.

[0070] Accordingly, an embodiment of the present invention further provides a computer-readable storage medium, which is used to store computer-readable programs or instructions. When the program or instructions are executed by a processor, the steps or functions in the power take-off control method of the commercial vehicle upper system provided by the above-mentioned method embodiments can be implemented.

[0071] Those skilled in the art will appreciate that all or part of the processes of the above-mentioned embodiments can be implemented by instructing related hardware (such as a processor, a controller, etc.) through a computer program, and the computer program can be stored in a computer-readable storage medium, wherein the computer-readable storage medium is a disk, an optical disk, a read-only storage memory, or a random access memory, etc.

[0072] The above is a detailed introduction to a method and device for controlling a power take-off of a commercial vehicle mounted system provided by the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A power take-off control method for a commercial vehicle upper system, characterized in that: include: When the commercial vehicle enters the power take-off speed regulation state, the power take-off control mode is determined in response to the mode selection signal of the mode selection switch; the power take-off control mode includes a bus mode and a hard line mode; When the power take-off control mode is a hard-line mode, the speed control mode is determined in response to a speed control signal of a speed control switch; when the power take-off control mode is a bus mode, the speed control mode is determined in response to a message signal of a bus; The engine speed is adjusted based on the speed regulation mode; the speed regulation mode includes a continuously adjustable power take-off mode, a constant speed power take-off control mode, a speed limiting mode and a one-button constant speed mode.

2. The power take-off control method of a commercial vehicle upper mounting system according to claim 1, characterized in that: The speed control switch includes a speed control enabling switch, a speed control acceleration switch, and a speed control deceleration switch; the speed control mode is determined in response to the speed control signal of the speed control switch, including: When the speed acceleration switch and the speed deceleration switch are simultaneously pressed for a preset time and then released, and the speed control enabling switch is pressed, a first mode speed control signal is generated, and the speed control mode is switched to the continuously adjustable power take-off mode in response to the first mode speed control signal; When the speed acceleration switch and the speed deceleration switch are pressed for a preset time and then released, and the speed acceleration switch is pressed a preset number of times, a second mode speed regulation signal is generated, and the speed regulation mode is switched to the fixed speed adjustable power take-off control mode in response to the second mode speed regulation signal; When the speed acceleration switch and the speed deceleration switch are pressed for a preset time and then released, and the speed deceleration switch is pressed for a preset number of times, a third mode speed regulation signal is generated, and the speed regulation mode is switched to the speed limit mode in response to the third mode speed regulation signal; When the speed acceleration switch and the speed deceleration switch are pressed for a preset time and then released, and the speed enable switch is pressed a preset number of times, a fourth mode speed control signal is generated, and the speed control mode is switched to the one-button constant speed mode in response to the fourth mode speed control signal.

3. The power take-off control method of a commercial vehicle upper mounting system according to claim 2, characterized in that: The method further comprises: In response to a brake pressing signal, storing the speed control mode; The speed control mode switching success information is sent to the display screen of the commercial vehicle and displayed.

4. The power take-off control method of a commercial vehicle upper mounting system according to claim 2, characterized in that: When the speed regulation mode is the continuously adjustable power take-off mode, adjusting the engine speed based on the speed regulation mode includes: In response to the activation signal of the speed control enabling switch, when the speed control acceleration switch is pressed for the first time, the engine speed is adjusted to a first set speed, and when the speed control deceleration switch is pressed for the first time, the engine speed is adjusted to a second set speed; In response to the activation signal, when the speed acceleration switch is long pressed, the engine speed is increased from the current speed by a first acceleration adjustment step, and when the speed acceleration switch is not pressed for the first time, the engine speed is increased from the current speed by a second acceleration adjustment step; In response to the activation signal, when the speed deceleration switch is long pressed, the engine speed is reduced from the current speed by a first deceleration adjustment step; when the speed deceleration switch is not pressed for the first time, the engine speed is reduced from the current speed by a second deceleration adjustment step.

5. The power take-off control method of a commercial vehicle upper mounting system according to claim 2, characterized in that: When the speed regulation mode is the constant speed power take-off control mode, adjusting the engine speed based on the speed regulation mode includes: When the speed regulation enabling switch is switched once within a set time period, the engine speed is controlled to switch between a plurality of set speeds in sequence.

6. The power take-off control method of a commercial vehicle upper mounting system according to claim 2, characterized in that: When the speed regulation mode is the speed limiting mode, adjusting the engine speed based on the speed regulation mode includes: In response to the activation signal of the speed regulation enabling switch, the engine speed is controlled not to exceed a speed threshold.

7. The power take-off control method of a commercial vehicle upper mounting system according to claim 2, characterized in that: When the speed regulation mode is the one-button fixed speed mode, adjusting the engine speed based on the speed regulation mode includes: In response to the activation signal of the speed regulation enabling switch, the engine speed is controlled to be a preset value.

8. The power take-off control method of a commercial vehicle upper mounting system according to claim 1, characterized in that: The message signal includes a speed regulation mode signal, and the message signal of the response bus determines the speed regulation mode, including: The speed regulation mode is determined based on a preset mapping relationship between the speed regulation mode signal and the speed regulation mode and the speed regulation mode signal.

9. The power take-off control method of a commercial vehicle upper mounting system according to claim 1, characterized in that: The method further comprises: In response to a switch activation signal of a speed control system activation switch, vehicle state parameters of the commercial vehicle are obtained; the vehicle state parameters include engine speed, vehicle speed, clutch state, service brake state, and parking brake state; When the engine speed is within the normal speed range, the vehicle speed is zero, the clutch state is the clutch is not pressed, the service brake state is the brake is not pressed, and the parking brake state is not enabled, the commercial vehicle is controlled to enter the power take-off speed regulation state.

10. A power take-off control device for a commercial vehicle upper system, characterized in that: include: A power take-off control mode determination unit, used for determining a power take-off control mode in response to a mode selection signal of a mode selection switch when the commercial vehicle enters a power take-off speed regulation state; the power take-off control mode includes a bus mode and a hard line mode; A speed control mode determining unit, for determining the speed control mode in response to a speed control signal of a speed control switch when the power take-off control mode is a hard line mode, and for determining the speed control mode in response to a message signal of a bus when the power take-off control mode is a bus mode; The engine speed regulating unit is used to regulate the engine speed based on the speed regulation mode; the speed regulation mode includes a continuously adjustable power take-off mode, a constant speed power take-off control mode, a speed limiting mode and a one-button constant speed mode.

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