Driving power takeoff method, device and equipment based on power takeoff and storage medium

Abstract

The invention provides a driving power takeoff method, device and equipment based on a power takeoff and a storage medium, and relates to the technical field of vehicles. The method comprises the following steps: receiving a driving power take-off request initiated by vehicle-mounted equipment of a target working vehicle, and determining an engine load of the target working vehicle; and if it is determined that the target work vehicle is allowed to enter the driving power take-off mode based on the engine load, a target power take-off assembled in the target work vehicle is engaged with an engine in the target work vehicle. And then, the target required vehicle speed of the driving power take-off request is obtained, power take-off is conducted from an engine based on the target power take-off device while gear shifting operation is conducted on the target operation vehicle based on the target required vehicle speed, and the obtained power is sent to the vehicle-mounted equipment. According to the method, the energy loss in the power take-off process can be reduced, and the power take-off efficiency can be improved.

Description

Technical Field

[0001] This application relates to the technical field of vehicles, and in particular, to a driving power take-off method, device, equipment, and storage medium based on a power take-off Background Art

[0002] With the application and development of power take-off technology, many special operation vehicles (such as fire trucks, etc.) have begun to be equipped with power take-offs to drive the operation of on-vehicle equipment (such as water pumps, rescue equipment, etc.).

[0003] Existing special operation vehicles connect the power take-off to the gearbox, and the power take-off obtains power through the gears of the gearbox. Generally, in order to ensure safety and the normal operation of on-vehicle equipment, it is necessary to first put the gearbox in neutral and stop the vehicle, and then take power from the gearbox through the power take-off. When power needs to be taken off during vehicle driving, it is necessary to ensure that the gearbox is in an engaged gear before power can be taken off.

[0004] Therefore, the existing technology has technical problems of high energy loss and low power take-off efficiency during the power take-off process. Summary of the Invention

[0005] This application provides a driving power take-off method, device, equipment, and storage medium based on a power take-off to solve the technical problems of high energy loss and low power take-off efficiency in the existing technology.

[0006] In a first aspect, this application provides a driving power take-off method based on a power take-off, including:

[0007] Receiving a driving power take-off request initiated by on-vehicle equipment of a target operation vehicle, and determining the engine load of the target operation vehicle;

[0008] If it is determined, based on the engine load, that the target operation vehicle is allowed to enter the driving power take-off mode, then engage a target power take-off with the engine of the target operation vehicle; wherein, the target power take-off is assembled in the target operation vehicle and is connected to the engine;

[0009] Obtaining a target required vehicle speed of the driving power take-off request, performing a gear shifting operation on the target operation vehicle based on the target required vehicle speed, and taking power from the engine based on the target power take-off; and sending the obtained power to the on-vehicle equipment.

[0010] In a possible design, the engaging the target power take-off with the engine of the target operation vehicle includes:

[0011] Obtaining a first rotation speed of the engine and a second rotation speed of the target power take-off;

[0012] Based on the first rotational speed and the second rotational speed, determine whether the target power take-off is operating normally; if the target power take-off is operating normally, then engage the target power take-off with the engine of the target work vehicle.

[0013] In one possible design, the determining whether the target power take-off is operating normally based on the first rotational speed and the second rotational speed includes:

[0014] Obtain the power take-off gear ratio of the target power take-off;

[0015] Based on the first rotational speed and the power take-off gear ratio, calculate the expected rotational speed of the target power take-off;

[0016] Match the expected rotational speed with the second rotational speed; if they match, determine that the target power take-off is operating normally, and if they do not match, determine that the target power take-off is not operating normally.

[0017] In one possible design, the performing a gear shifting operation on the target work vehicle based on the target required vehicle speed includes:

[0018] Determine the target gear corresponding to the target required vehicle speed; based on the target gear, calculate the transmission gear ratio of the target work vehicle according to the target required vehicle speed;

[0019] Perform a gear shifting operation on the target work vehicle based on the transmission gear ratio, and adjust the gear of the target work vehicle to the target gear.

[0020] In one possible design, the performing a gear shifting operation on the target work vehicle based on the transmission gear ratio includes:

[0021] Send the calculated transmission gear ratio to the transmission assembled on the target work vehicle;

[0022] Based on the transmission gear ratio, perform a gear shifting operation on the target work vehicle according to the transmission.

[0023] In one possible design, the if determining that it is allowed for the target work vehicle to enter the driving power take-off mode based on the engine load includes:

[0024] Compare the engine load with a preset load threshold;

[0025] If the engine load is less than or equal to the preset load threshold, determine that it is allowed for the target work vehicle to enter the driving power take-off mode.

[0026] In one possible design, the method further includes:

[0027] If the target work vehicle is not allowed to enter the driving power take-off mode, a load abnormal signal is fed back to the target driver driving the target work vehicle;

[0028] If the target power take-off does not work properly, a power take-off abnormal signal is fed back to the target driver;

[0029] If the actual vehicle speed of the target work vehicle after shifting does not reach the target required vehicle speed, a vehicle speed abnormal signal is fed back to the target driver.

[0030] In a second aspect, the present application provides a driving power take-off device based on a power take-off, including:

[0031] A receiving module, configured to receive a driving power take-off request initiated by on-vehicle equipment of a target work vehicle;

[0032] A determining module, configured to determine the engine load of the target work vehicle;

[0033] An engaging module, configured to engage a target power take-off with the engine of the target work vehicle if it is determined, based on the engine load, that the target work vehicle is allowed to enter the driving power take-off mode; wherein the target power take-off is assembled in the target work vehicle and is connected to the engine;

[0034] A shifting module, configured to obtain a target required vehicle speed of the driving power take-off request and perform a shifting operation on the target work vehicle based on the target required vehicle speed;

[0035] A power take-off module, configured to take power from the engine based on the target power take-off; and send the obtained power to the on-vehicle equipment.

[0036] In a possible design, the engaging module further includes: an obtaining module and a judging module,

[0037] The obtaining module is configured to obtain a first rotation speed of the engine and a second rotation speed of the target power take-off;

[0038] The judging module is configured to judge whether the target power take-off works properly based on the first rotation speed and the second rotation speed;

[0039] The engaging module is further configured to engage the target power take-off with the engine of the target work vehicle if the target power take-off works properly.

[0040] In a possible design, the obtaining module is further configured to obtain a power take-off gear ratio of the target power take-off;

[0041] The judging module further includes: a calculating module and a matching module,

[0042] The calculation module is configured to calculate the expected speed of the target power take-off based on the first speed and the power take-off gear ratio.

[0043] The matching module is configured to match the expected speed with the second speed.

[0044] The determination module is further configured to, if they match, determine that the target power take-off is operating normally; if they do not match, determine that the target power take-off is not operating normally.

[0045] In a possible design, the determination module is further configured to determine the target gear corresponding to the target required vehicle speed.

[0046] The calculation module is further configured to calculate the transmission gear ratio of the target work vehicle based on the target gear and the target required vehicle speed.

[0047] The gear shifting module is further configured to perform a gear shifting operation on the target work vehicle based on the transmission gear ratio, and adjust the gear of the target work vehicle to the target gear.

[0048] In a possible design, the gear shifting module further includes: a sending module configured to send the calculated transmission gear ratio to the transmission assembled on the target work vehicle.

[0049] The gear shifting module is further configured to perform a gear shifting operation on the target work vehicle based on the transmission gear ratio and the transmission.

[0050] In a possible design, the determination module is further configured to:

[0051] Compare the engine load with a preset load threshold.

[0052] If the engine load is less than or equal to the preset load threshold, determine that the target work vehicle is allowed to enter the driving power take-off mode.

[0053] In a possible design, the sending module is further configured to:

[0054] If the target work vehicle is not allowed to enter the driving power take-off mode, feedback a load abnormal signal to the target driver driving the target work vehicle.

[0055] If the target power take-off is not operating normally, feedback a power take-off abnormal signal to the target driver.

[0056] If the actual vehicle speed of the target work vehicle after gear shifting does not reach the target required vehicle speed, feedback a vehicle speed abnormal signal to the target driver.

[0057] In a third aspect, an embodiment of the present application provides an electronic device, including: at least one processor and a memory; the memory stores computer-executable instructions; the at least one processor executes the computer-executable instructions stored in the memory, so that the at least one processor executes the method described in the first aspect above and various possible designs.

[0058] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, in which computer-executable instructions are stored. When a processor executes the computer-executable instructions, the method described in the first aspect above and various possible designs is implemented.

[0059] In a fifth aspect, an embodiment of the present application provides a computer program product, including a computer program. When the computer program is executed by a processor, the method described in the first aspect above and various possible designs of the first aspect is implemented.

[0060] The driving power take-off method, device, equipment and storage medium based on a power take-off provided by the present application, after receiving a driving power take-off request initiated by an on-vehicle device of a target work vehicle, determine the engine load of the target work vehicle. If it is determined based on the engine load that the target work vehicle is allowed to enter the driving power take-off mode, then engage the target power take-off with the engine of the target work vehicle. Wherein, the target power take-off is assembled in the target work vehicle and is connected to the engine. After that, obtain the target required vehicle speed of the driving power take-off request. While performing a gear shifting operation on the target work vehicle based on the target required vehicle speed, take power from the engine based on the target power take-off and send the obtained power to the on-vehicle device. The connection between the target power take-off and the engine can directly obtain power from the engine, reducing intermediate components such as the gearbox and drive shaft in the power transmission path, thereby reducing energy loss during the power take-off process. At the same time, the power take-off from the engine by the power take-off does not depend on the gears of the gearbox, which means that the driver can perform a gear shifting operation on the target work vehicle during the driving power take-off, solving the situation where the gearbox needs to be put in neutral and the vehicle needs to stop before power can be taken off, and improving the power take-off efficiency. Description of the Drawings

[0061] The drawings here are incorporated into the specification and form a part of this specification, showing embodiments consistent with the present application and used together with the specification to explain the principles of the present application.

[0062] Figure 1 It is a structural schematic diagram of a driving power take-off method based on a power take-off applicable to an embodiment of the present application;

[0063] Figure 2 It is a flow schematic of a driving power take-off method based on a power take-off provided by an embodiment of the present application Figure 1 ;

[0064] Figure 3 Flow schematic of the driving power take-off method based on the power take-off for this application embodiment Figure 2 ;

[0065] Figure 4 Structural schematic diagram of the driving power take-off device based on the power take-off for this application embodiment;

[0066] Figure 5 Hardware structure diagram of the electronic device provided by this application embodiment.

[0067] Through the above-mentioned drawings, the clear embodiments of this application have been shown, and there will be more detailed descriptions hereinafter. These drawings and textual descriptions are not intended to limit the scope of the concept of this application in any way, but to illustrate the concept of this application to those skilled in the art by referring to specific embodiments. Detailed implementation manners

[0068] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all the implementation manners consistent with this application. On the contrary, they are merely examples of the devices and methods consistent with some aspects of this application as detailed in the appended claims.

[0069] In the description and claims of this invention and the above-mentioned drawings, the terms "first", "second", "third", "fourth", etc. (if any) are used to distinguish similar objects and do not necessarily have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances so that the embodiments of this invention described here can be implemented, for example, in an order other than those illustrated or described here.

[0070] In the embodiments of this application, words such as "exemplary" or "for example" are used to represent examples, illustrations, or explanations. Any embodiment or design solution described as "exemplary" or "for example" in this application should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Exactly speaking, using words such as "exemplary" or "for example" aims to present relevant concepts in a specific way.

[0071] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use, and processing of relevant data need to comply with relevant laws, regulations, and standards, and corresponding operation entrances are provided for users to select to authorize or reject.

[0072] During the operation of special working vehicles (such as fire trucks, ambulances, engineering vehicles, garbage trucks, concrete mixers, etc.), additional on-vehicle equipment (such as water pumps, hydraulic systems, rescue equipment, etc.) is usually configured to complete their specific tasks. These additional on-vehicle equipment endows the special working vehicles with the ability to perform specific functions. However, the on-vehicle equipment requires a large amount of power during operation to ensure its normal operation.

[0073] A power take-off is a device that can extract power from the vehicle's power system and transfer it to other equipment. With the application and development of power take-off technology, many special working vehicles have begun to be equipped with power take-offs to drive the operation of on-vehicle equipment, and the application of power take-offs in special working vehicles is becoming more and more common.

[0074] In existing special working vehicles, the power take-off is usually connected to the transmission. Through the gears of the transmission, the power take-off can obtain power and transfer it to the on-vehicle equipment. Since the gears of the transmission are in a high-speed rotating state during vehicle driving, if power is taken off in this case, it may cause impact and wear between the gears, thus damaging the transmission or the power take-off itself.

[0075] Therefore, usually, in order to ensure safety and the normal operation of on-vehicle equipment, it is necessary to first put the transmission in neutral and stop the vehicle, and then take power from the transmission through the power take-off. If power must be taken off during vehicle driving, it is necessary to ensure that the transmission is in an engaged gear. This means that the power transmission path of the vehicle is successfully established, that is, the gear shifting process of the transmission has been completed and the gears are correctly engaged, and then power can be taken off.

[0076] It can be seen that when the power take-off obtains power through the transmission, the power needs to be transmitted through multiple gears and shafts. Since each transmission component will introduce friction and heat loss, the overall efficiency will be reduced. At the same time, the power transmission from the engine to the transmission and then to the power take-off will also increase the energy loss during the power take-off process.

[0077] In addition, since special working vehicles need to take power in a fixed gear and cannot adjust the speed or torque as needed, this means that special working vehicles cannot shift gears during the power take-off process, and the operation flexibility of the vehicle will be restricted. And the on-vehicle equipment may require different levels of power input. If gears cannot be shifted during the power take-off process, the power output may not be adjusted according to the demand, resulting in a reduction in power take-off efficiency.

[0078] In view of the above technical problems, the inventor found during the research on the power take-off process of the power take-off that the power take-off obtains power through the gearbox, which limits the operation ability of the vehicle and the flexibility of power output. To avoid the influence of the gearbox on the power take-off process, the inventor thought of directly connecting the power take-off to the engine to obtain power at any time when the engine is running, without being affected by the state of the gearbox. Obtaining power directly from the engine makes the power transmission path shorter, reduces friction and heat loss, thereby reducing energy loss during the power take-off process. In addition, the power take-off that obtains power directly from the engine can operate independently of the gearbox, which means that the power take-off can work normally even when the vehicle is moving, improving the power take-off efficiency.

[0079] The following will specifically describe the technical solutions of this application and how the technical solutions of this application solve the above technical problems with specific embodiments. These several specific embodiments below can be combined with each other, and the same or similar concepts or processes may not be repeated in some embodiments. The embodiments of this application will be described below with reference to the drawings.

[0080] In a possible implementation manner, Figure 1 It is a structural schematic diagram of a driving power take-off method based on a power take-off applicable to the embodiments of this application. As Figure 1 shown, an engine, an engine control unit, a power take-off, a body control unit, a gearbox, a gearbox control unit, an upper-mounted load, an upper-mounted control end, and a cab instrument are assembled in the work vehicle. Among them, the upper-mounted load refers to a specific device or structure installed on the work vehicle, that is, the vehicle-mounted device in this application.

[0081] An engine speed sensor is installed on the engine, a power take-off solenoid valve and a power take-off speed sensor are installed on the power take-off, and a vehicle speed sensor and an input shaft speed sensor are installed on the gearbox. Explanatorily, the power take-off can adopt a full-power power take-off, and the gearbox can adopt an Automated Manual Transmission (AMT). Among them, AMT is a transmission system that combines the advantages of a manual gearbox and an automatic gearbox.

[0082] Next, a brief description will be given of the connection relationships of the components in the work vehicle.

[0083] The engine is mechanically connected to the power take-off through an atmospheric clutch or a torsional damper, and the power take-off is mechanically connected to the gearbox through a normally open clutch. The normally open clutch is also signal-connected to the gearbox control unit. The power take-off is also connected to the upper-mounted load (vehicle-mounted device) to provide power for the upper-mounted load (vehicle-mounted device).

[0084] In addition, the engine is also signal-connected to the engine control unit, and the engine speed sensor of the engine is signal-connected to the engine control unit. The power take-off solenoid valve and the power take-off speed sensor of the power take-off are signal-connected to the body control unit. The body control unit is signal-connected to the upper mounting control end. The input shaft speed sensor and the vehicle speed sensor of the transmission are connected to the transmission control unit. The engine control unit, the body control unit, and the transmission control unit are connected to the cab instrument through a Controller Area Network (CAN) bus.

[0085] Based on Figure 1 the structure shown, an embodiment of the present application also provides a driving power take-off method based on a power take-off. Figure 2 is a schematic flow chart of the driving power take-off method based on a power take-off provided by an embodiment of the present application Figure 1 , as Figure 2 shown, the driving power take-off method based on a power take-off includes:

[0086] S201. Receive a driving power take-off request initiated by on-vehicle equipment of a target work vehicle, and determine the engine load of the target work vehicle.

[0087] Specifically, the upper mounting control end sends a driving power take-off request to the body control unit. After receiving the driving power take-off request, the body control unit determines the engine load of the target work vehicle. Among them, the engine load refers to the working load borne by the engine during operation.

[0088] S202. If it is determined, based on the engine load, that the target work vehicle is allowed to enter the driving power take-off mode, then engage the target power take-off with the engine of the target work vehicle.

[0089] In a possible implementation manner, the engine load is compared with a preset load threshold. Herein, the preset load threshold is a preset load level used as a judgment criterion. The preset load threshold represents a safe or ideal load upper limit to ensure that the engine will not be overloaded when entering a specific operation mode.

[0090] If the engine load is less than or equal to the preset load threshold, it indicates that the engine has sufficient remaining capacity to support additional operations (such as power take-off), so the target work vehicle is allowed to enter the driving power take-off mode. If the engine load is greater than the preset load threshold, the target work vehicle is not allowed to enter the driving power take-off mode. At this time, a signal indicating too high a load needs to be fed back to the upper mounting control end, and a signal indicating abnormal load needs to be fed back to the target driver of the target work vehicle through the cab instrument.

[0091] When the target working vehicle is allowed to enter the driving power take-off mode, it is further necessary to determine whether the target power take-off is in a normal working state. Specifically, obtain the first rotational speed of the engine and the second rotational speed of the target power take-off, and based on the first rotational speed and the second rotational speed, determine whether the target power take-off is working properly.

[0092] It should be noted that before receiving the driving power take-off request, the engine and the target power take-off may be separated or engaged. For example, if the target working vehicle is in the parking power take-off mode before receiving the driving power take-off request, the target power take-off is engaged with the engine; if the target working vehicle is not in the power take-off mode, the target power take-off is separated from the engine. Whether the target power take-off is separated or closed from the engine, when the target working vehicle enters the driving power take-off mode and the target power take-off is working properly, the target power take-off must be engaged with the engine.

[0093] If the target power take-off is not working properly, separate the target power take-off from the engine, and at the same time, feedback a power take-off abnormal signal to the target driver through the cab instrument.

[0094] It should be explained that determining whether the target power take-off is working properly based on the first rotational speed and the second rotational speed depends on the power take-off gear ratio of the target power take-off, because the power take-off gear ratio determines the relationship between the first rotational speed and the second rotational speed.

[0095] Specifically, obtain the power take-off gear ratio of the target power take-off, and based on the first rotational speed and the power take-off gear ratio, calculate the expected rotational speed of the target power take-off. Match the expected rotational speed with the second rotational speed. If they match, it is determined that the target power take-off is working properly; if they do not match, it is determined that the target power take-off is not working properly.

[0096] Among them, the matching of the expected rotational speed and the second rotational speed means that the second rotational speed is consistent with the expected rotational speed, or a certain error range is allowed. Because in actual matching operations, completely precise matching may be affected by various factors, such as mechanical tolerances, load changes, and measurement errors.

[0097] It should be noted that the engagement or separation of the target power take-off and the engine can be controlled by the power take-off solenoid valve of the target power take-off. The body control unit controls the power take-off solenoid valve to be energized. At this time, the target power take-off is in gear, the target power take-off is engaged with the engine, and the engine enters the power take-off mode. The body control unit controls the power take-off solenoid valve to be de-energized. At this time, the power take-off is out of gear, the target power take-off is separated from the engine, and the engine exits the power take-off mode.

[0098] S203. Obtain the target required vehicle speed of the driving power take-off request, perform a gear shift operation on the target working vehicle based on the target required vehicle speed, and take power from the engine based on the target power take-off; send the obtained power to the on-vehicle device.

[0099] It is understandable that the effective operation of the target power take-off may require the target work vehicle to maintain a specific speed range to ensure the stability and efficiency of power output. For example, some on-vehicle devices may need to use the power take-off when driving at low speeds to provide stable power output.

[0100] Therefore, it is necessary to determine the target gear corresponding to the target required vehicle speed according to the target required vehicle speed of the driving power take-off request, and further calculate the transmission gear ratio of the target work vehicle based on the target gear and the target required vehicle speed.

[0101] Explanatorily, the transmission adjusts the power and speed output from the engine to the drive wheels (i.e., the wheels) by changing the transmission gear ratio. The transmission gear ratio refers to the ratio between the driving gear and the driven gear. By adjusting the transmission gear ratio, the performance of the target work vehicle at different vehicle speeds can be optimized.

[0102] Thus, the calculated transmission gear ratio is sent to the transmission of the target work vehicle. The transmission can perform a gear shift operation on the target work vehicle according to the transmission gear ratio, and adjust the gear of the target work vehicle to the target gear corresponding to the target required vehicle speed.

[0103] Combined with Figure 1 the shown structure, the body control unit transmits the calculated transmission gear ratio to the transmission control unit via the CAN bus. The transmission control unit controls the transmission and the normally open clutch to gradually engage the target gear, and displays the target gear through the cab instrument.

[0104] It should be noted that after the gear of the target work vehicle is adjusted to the target gear through the transmission, the transmission control unit also needs to read the actual vehicle speed of the target work vehicle after shifting through the vehicle speed sensor. Then, the transmission control unit transmits the read actual vehicle speed to the body control unit, and the body control unit determines whether the actual vehicle speed reaches the target required vehicle speed of the driving power take-off request. If it reaches, a normal vehicle speed signal is fed back to the target driver through the cab instrument, and the target work vehicle travels at the current actual vehicle speed and performs power take-off. If it does not reach, an abnormal vehicle speed signal is fed back to the target driver, and the gear or vehicle speed of the target work vehicle is continuously adjusted.

[0105] It should be understood that if the target required vehicle speed of the driving power take-off request changes, it is necessary to readjust the gear of the target work vehicle according to the change in the target required vehicle speed.

[0106] The driving power take-off method based on a power take-off provided in this application, after receiving a driving power take-off request initiated by on-vehicle equipment of a target work vehicle, determines the engine load of the target work vehicle. If the engine load is less than or equal to a preset load threshold, it is determined that the target work vehicle is allowed to enter the driving power take-off mode. Then, the first rotation speed of the engine and the second rotation speed of the target power take-off are obtained. If it is determined that the target power take-off is in a normal working state based on the first rotation speed and the second rotation speed, the target power take-off is engaged with the engine. Next, the target required vehicle speed of the driving power take-off request is obtained, and the target gear corresponding to the target required vehicle speed is determined. According to the target required vehicle speed and the target gear, the transmission gear ratio of the target work vehicle is calculated. Based on the transmission gear ratio, a gear shifting operation is performed on the target work vehicle to adjust the gear of the target work vehicle to the target gear. While performing the gear shifting operation on the target work vehicle, power is taken from the engine by the target power take-off and the obtained power is sent to the on-vehicle equipment. The connection between the target power take-off and the engine can directly obtain power from the engine, reducing intermediate components such as the transmission and the drive shaft in the power transmission path, thereby reducing energy loss during the power take-off process. At the same time, the power take-off from the engine does not depend on the gears of the transmission, which means that the driver can perform a gear shifting operation on the target work vehicle during driving power take-off, solving the situation where power can only be taken off after shifting the transmission to neutral and stopping, and improving the power take-off efficiency.

[0107] Next, through a specific embodiment, Figure 2 a summary description is given of the specific process of the driving power take-off method based on a power take-off as shown. Figure 3 is a schematic flow chart of the driving power take-off method based on a power take-off provided in this application Figure 2 , as Figure 3 shown, the driving power take-off method based on a power take-off specifically includes the following steps:

[0108] S301. The target work vehicle performs a parking power take-off operation;

[0109] S302. The on-vehicle equipment initiates a driving power take-off request to drive at the target required vehicle speed through the upper mounting control terminal;

[0110] S303. The body control unit receives the driving power take-off request from the upper mounting control terminal;

[0111] S304. The body control unit determines whether to allow the target work vehicle to enter the driving power take-off mode according to the engine load;

[0112] If not, S305 is executed; if so, S306 is executed.

[0113] S305. The body control unit feeds back a signal of excessive load to the upper mounting control terminal and executes S302.

[0114] S306. The body control unit reads the first engine speed and the second speed of the target power take-off.

[0115] S307. Based on the first speed and the second speed, determine whether the target power take-off is working properly.

[0116] If not, execute S308; if so, execute S311.

[0117] S308. Alarm through the cab instrument and prompt a power take-off operation fault.

[0118] S309. The body control unit feeds back a power take-off abnormal signal to the upper mounting control end.

[0119] S310. The target driver processes the fault according to the instrument prompt and executes S302.

[0120] S311. Engage the target power take-off with the engine.

[0121] S312. Determine the target gear corresponding to the target required vehicle speed, and calculate the transmission gear ratio of the target work vehicle based on the target required vehicle speed and the target gear.

[0122] S313. The body control unit transmits the transmission gear ratio to the transmission control unit.

[0123] S314. The transmission control unit controls the transmission and the normally open clutch to gradually shift into the target gear.

[0124] S315. The cab instrument displays the current actual gear and actual vehicle speed of the target work vehicle.

[0125] S316. The body control unit determines whether the actual vehicle speed has reached the target required vehicle speed.

[0126] If not, execute S317; if so, execute S318.

[0127] S317. The body control unit feeds back a vehicle speed abnormal signal to the target driver and continues to adjust the gear or vehicle speed of the target work vehicle.

[0128] S318. The target work vehicle performs a power take-off operation while driving.

[0129] S319. Determine whether the target required vehicle speed of the power take-off request while driving has changed.

[0130] If not, execute S320; if so, return to S303.

[0131] S320. The target work vehicle maintains the current actual vehicle speed for power take-off operation while driving.

[0132] Connecting the target power take-off to the engine can directly obtain power from the engine, reducing intermediate components such as the gearbox and drive shaft in the power transmission path, thereby reducing energy loss during the power take-off process. At the same time, the power take-off obtaining power from the engine does not depend on the gears of the gearbox, which means that the driver can shift gears for the target working vehicle during on-road power take-off, solving the situation where power take-off can only be performed after shifting the gearbox to neutral and stopping the vehicle, and improving the power take-off efficiency.

[0133] Figure 4 The structural schematic diagram of the on-road power take-off device based on the power take-off provided by this application is as Figure 4 shown. The on-road power take-off device 400 based on the power take-off includes: a receiving module 401, a determining module 402, an engaging module 403, a shifting module 404, and a power take-off module 405;

[0134] Among them, the receiving module 401 is used to receive an on-road power take-off request initiated by the vehicle-mounted device of the target working vehicle;

[0135] The determining module 402 is used to determine the engine load of the target working vehicle;

[0136] The engaging module 403 is used to engage the target power take-off with the engine of the target working vehicle if it is determined that the target working vehicle is allowed to enter the on-road power take-off mode based on the engine load; wherein, the target power take-off is assembled in the target working vehicle and is connected to the engine;

[0137] The shifting module 404 is used to obtain the target required vehicle speed of the on-road power take-off request and perform a gear shifting operation on the target working vehicle based on the target required vehicle speed;

[0138] The power take-off module 405 is used to take power from the engine based on the target power take-off; and send the obtained power to the vehicle-mounted device.

[0139] In a possible design, the engaging module 403 further includes: an obtaining module 406 and a judging module 407,

[0140] The obtaining module 406 is used to obtain the first rotation speed of the engine and the second rotation speed of the target power take-off;

[0141] The judging module 407 is used to judge whether the target power take-off is working properly based on the first rotation speed and the second rotation speed;

[0142] The engaging module 403 is further used to engage the target power take-off with the engine of the target working vehicle if the target power take-off is working properly.

[0143] In a possible design, the obtaining module 406 is further configured to obtain the power take-off gear ratio of the target power take-off.

[0144] The determining module 407 further includes: a calculating module 408 and a matching module 409.

[0145] The calculating module 408 is configured to calculate the expected speed of the target power take-off based on the first speed and the power take-off gear ratio.

[0146] The matching module 409 is configured to match the expected speed with the second speed.

[0147] The determining module 402 is further configured to, if they match, determine that the target power take-off is working properly; if they do not match, determine that the target power take-off is not working properly.

[0148] In a possible design, the determining module 402 is further configured to determine the target gear corresponding to the target required vehicle speed.

[0149] The calculating module 408 is further configured to calculate the transmission gear ratio of the target work vehicle based on the target gear and the target required vehicle speed.

[0150] The shifting module 404 is further configured to perform a shifting operation on the target work vehicle based on the transmission gear ratio, and adjust the gear of the target work vehicle to the target gear.

[0151] In a possible implementation manner, the shifting module 404 further includes: a sending module 410, configured to send the calculated transmission gear ratio to the transmission assembled on the target work vehicle.

[0152] The shifting module 404 is further configured to perform a shifting operation on the target work vehicle based on the transmission gear ratio and the transmission.

[0153] In a possible design, the determining module 402 is further configured to:

[0154] Compare the engine load with a preset load threshold.

[0155] If the engine load is less than or equal to the preset load threshold, determine that the target work vehicle is allowed to enter the driving power take-off mode.

[0156] In a possible design, the sending module 410 is further configured to:

[0157] If the target work vehicle is not allowed to enter the driving power take-off mode, feedback a load abnormal signal to the target driver driving the target work vehicle.

[0158] If the target power take-off does not work properly, an abnormal signal of the power take-off is fed back to the target driver.

[0159] If the actual vehicle speed of the target work vehicle after shifting gears does not reach the target required vehicle speed, an abnormal vehicle speed signal is fed back to the target driver.

[0160] The vehicle power take-off device based on the power take-off provided by the embodiment of the present application can be used to execute the vehicle power take-off method based on the power take-off in any of the above embodiments, and its implementation principle and technical effects are similar, which will not be elaborated here.

[0161] It should be noted that it should be understood that the division of each module of the above device is only a division of logical functions. In actual implementation, it can be fully or partially integrated into a physical entity, or physically separated. And these modules can all be implemented in the form of software called by a processing element; they can also all be implemented in the form of hardware; some modules can also be implemented in the form of software called by a processing element, and some modules can be implemented in the form of hardware. In addition, all or part of these modules can be integrated together or independently implemented. The processing element mentioned here can be an integrated circuit with signal processing capabilities. In the implementation process, each step of the above method or each of the above modules can be completed by the integrated logic circuit in the processor element or the instruction in the form of software.

[0162] Figure 5 It is a schematic structural diagram of an electronic device provided by an embodiment of the present application. As Figure 5 shown, the electronic device may include: a transceiver 51, a processor 52, and a memory 53.

[0163] The processor 52 executes the computer execution instructions stored in the memory, so that the processor 52 executes the solutions in the above embodiments. The processor 52 may be a general-purpose processor, including a central processing unit CPU, a network processor (NP), etc.; it may also be a digital signal processor DSP, an application specific integrated circuit ASIC, a field programmable gate array FPGA, or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components.

[0164] The memory 53 is connected to the processor 52 through a system bus and completes communication with each other. The memory 53 is used to store computer program instructions.

[0165] The transceiver 51 can be used for communication and interaction with other devices.

[0166] The system bus can be a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, or the like. The system bus can be divided into an address bus, a data bus, a control bus, etc. For the sake of convenience in representation, only a thick line is used in the figure, but it does not mean that there is only one bus or one type of bus. The transceiver is used to implement communication between the database access device and other computers (such as clients, read-write libraries, and read-only libraries). The memory may include Random Access Memory (RAM), and may also include non-volatile memory.

[0167] The electronic device provided by the embodiment of the present application can be used to execute the method provided by any of the above embodiments, and its implementation principle and technical effects are similar, which will not be elaborated here.

[0168] The embodiment of the present application also provides a computer-readable storage medium, in which computer instructions are stored. When the computer instructions run on a computer, the computer is enabled to execute the method provided by any of the above embodiments.

[0169] The embodiment of the present application also provides a computer program product, which includes a computer program stored in a computer-readable storage medium. At least one processor can read the computer program from the computer-readable storage medium, and when at least one processor executes the computer program, the method provided by any of the above embodiments can be implemented.

[0170] In several embodiments provided by the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the division of modules is only a logical function division. In actual implementation, there can be other division methods. For example, multiple modules can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed coupling or direct coupling or communication connection between each other can be through some interfaces, and the indirect coupling or communication connection of devices or modules can be in electrical, mechanical or other forms.

[0171] The modules described as separate components may or may not be physically separated. The components shown as modules may or may not be physical units, that is, they can be located in one place, or can be distributed to multiple network units. Some or all of the modules can be selected according to actual needs to implement the solution of this embodiment.

[0172] In addition, in each embodiment of the present application, each functional module can be integrated into a processing unit, or each module can exist physically alone, or two or more modules can be integrated into one unit. The unit formed by the above modules can be implemented in the form of hardware, or in the form of a hardware plus software functional unit.

[0173] The integrated module implemented in the form of a software functional module can be stored in a computer-readable storage medium. The above software functional module stored in a storage medium includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor to execute part of the steps of the methods in each embodiment of the present application.

[0174] It should be understood that the above processor can be a Central Processing Unit (CPU for short), or other general-purpose processors, Digital Signal Processors (DSP for short), Application Specific Integrated Circuits (ASIC for short), etc. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc. The steps of the method disclosed in combination with the invention can be directly embodied as being executed and completed by a hardware processor, or by a combination of hardware and software modules in the processor.

[0175] The memory may include high-speed RAM memory, and may also include non-volatile storage NVM, such as at least one disk memory, and can also be a USB flash drive, a mobile hard disk, a read-only memory, a magnetic disk, or an optical disc, etc.

[0176] The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For the convenience of representation, the bus in the drawings of the present application is not limited to only one bus or one type of bus.

[0177] The above storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk. The storage medium can be any available medium accessible by a general-purpose or special-purpose computer.

[0178] An exemplary storage medium is coupled to the processor so that the processor can read information from the storage medium and write information to the storage medium. Of course, the storage medium can also be a component of the processor. The processor and the storage medium can be located in an application specific integrated circuit (ASIC). Of course, the processor and the storage medium can also exist as discrete components in an electronic control unit or a master control device.

[0179] Those of ordinary skill in the art can understand that all or part of the steps of implementing the above method embodiments can be completed by hardware related to program instructions. The foregoing program can be stored in a computer-readable storage medium. When the program is executed, it performs the steps including the above method embodiments; and the foregoing storage medium includes: various media such as ROM, RAM, magnetic disk or optical disk that can store program codes.

[0180] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A driving power take-off method based on a power take-off, characterized in that, Including: Receiving a driving power take-off request initiated by an on-vehicle device of a target work vehicle, and determining an engine load of the target work vehicle; If it is determined, based on the engine load, that the target work vehicle is allowed to enter a driving power take-off mode, then engaging a target power take-off with the engine of the target work vehicle; wherein the target power take-off is assembled in the target work vehicle and is connected to the engine; Obtaining a target required vehicle speed of the driving power take-off request, performing a gear shifting operation on the target work vehicle based on the target required vehicle speed, and taking power from the engine based on the target power take-off; and sending the obtained power to the on-vehicle device.

2. The method according to claim 1, characterized in that, The engaging the target power take-off with the engine of the target work vehicle includes: Obtaining a first rotation speed of the engine and a second rotation speed of the target power take-off; Based on the first rotation speed and the second rotation speed, determining whether the target power take-off is working properly; if the target power take-off is working properly, then engaging the target power take-off with the engine of the target work vehicle.

3. The method according to claim 2, characterized in that, The determining whether the target power take-off is working properly based on the first rotation speed and the second rotation speed includes: Obtaining a power take-off gear ratio of the target power take-off; Calculating an expected rotation speed of the target power take-off based on the first rotation speed and the power take-off gear ratio; Matching the expected rotation speed with the second rotation speed; if they match, determining that the target power take-off is working properly, and if they do not match, determining that the target power take-off is not working properly.

4. The method according to claim 1, wherein The performing a gear shifting operation on the target work vehicle based on the target required vehicle speed includes: Determining a target gear corresponding to the target required vehicle speed; and calculating a transmission gear ratio of the target work vehicle based on the target required vehicle speed according to the target gear; Performing a gear shifting operation on the target work vehicle based on the transmission gear ratio, and adjusting the gear of the target work vehicle to the target gear.

5. The method according to claim 4, characterized in that, The performing a gear shifting operation on the target work vehicle based on the transmission gear ratio includes: Sending the calculated transmission gear ratio to a transmission assembled in the target work vehicle; Performing a gear shifting operation on the target work vehicle based on the transmission according to the transmission gear ratio.

6. The method according to claim 1, characterized in that The if it is determined, based on the engine load, that the target work vehicle is allowed to enter a driving power take-off mode includes: Comparing the engine load with a preset load threshold; If the engine load is less than or equal to the preset load threshold, then determining that the target work vehicle is allowed to enter a driving power take-off mode.

7. The method according to any one of claims 1 to 6, characterized in that, The method further includes: If the target work vehicle is not allowed to enter a driving power take-off mode, then feeding back a load abnormal signal to a target driver driving the target work vehicle; If the target power take-off is not working properly, then feeding back a power take-off abnormal signal to the target driver; If an actual vehicle speed of the target work vehicle after gear shifting does not reach the target required vehicle speed, then feeding back a vehicle speed abnormal signal to the target driver.

8. A driving power take-off device based on a power take-off, characterized in that, Including: A receiving module, configured to receive a driving power take-off request initiated by an on-vehicle device of a target work vehicle; A determination module, configured to determine the engine load of the target work vehicle; An engagement module, configured to engage a target power take-off with the engine of the target work vehicle if it is determined, based on the engine load, that the target work vehicle is allowed to enter the driving power take-off mode; wherein the target power take-off is assembled in the target work vehicle and is connected to the engine; A gear shifting module, configured to obtain a target required vehicle speed of the driving power take-off request and perform a gear shifting operation on the target work vehicle based on the target required vehicle speed; A power take-off module, configured to take power from the engine based on the target power take-off and send the obtained power to the on-vehicle device.

9. An electronic device, characterized in that, Comprising: A processor, and a memory communicatively connected to the processor; The memory stores computer-executable instructions; The processor executes the computer-executable instructions stored in the memory to implement the driving power take-off method based on a power take-off as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, Computer-executable instructions are stored in the computer-readable storage medium, and when the computer-executable instructions are executed by a processor, they are used to implement the driving power take-off method based on a power take-off as described in any one of claims 1 to 7.

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