阅读说明：本技术 一种装载机转速控制方法及相关装置 (Loader rotating speed control method and related device ) 是由 贾帅帅 郑玉杰 祝成祥 曹东明 高峰 于 2021-08-09 设计创作，主要内容包括：本申请实施例提供了一种装载机转速控制方法及相关装置,通过控制装载机在定效率作业模式下,基于转速记录指示来记录作业过程中发动机的转速。并在接收到转速限制指示时,根据转速记录确定用于限制发动机最高转速的转速限制值,进而将该转速限制值作为为后续作业时油门踏板开度最大时刻的发动机转速。以使装载机在定效率作业模式下执行后续作业时,作业人员将油门踏板控制到开度最大时刻,发动机所提供的转速即为该转速限制值。由此缓解定效率作业模式下,装载机在每次作业过程中的最高车速不同,造成额外油耗的情况。(The embodiment of the application provides a loader rotating speed control method and a related device, which are used for recording the rotating speed of an engine in the operating process based on rotating speed recording indication by controlling a loader in a constant-efficiency operating mode. And when a rotating speed limiting instruction is received, a rotating speed limiting value used for limiting the maximum rotating speed of the engine is determined according to the rotating speed record, and the rotating speed limiting value is used as the rotating speed of the engine at the moment when the opening degree of an accelerator pedal is maximum in the subsequent operation. When the loader executes subsequent operation in the constant-efficiency operation mode, the operator controls the accelerator pedal to be at the maximum opening, and the rotating speed provided by the engine is the rotating speed limit value. Therefore, the situation of extra oil consumption caused by different highest speeds of the loader in each operation process under the constant-efficiency operation mode is relieved.)

1. A loader rotational speed control method, characterized in that the method comprises:

in the constant-efficiency operation mode, responding to a rotating speed recording instruction, and recording the rotating speed of the engine in the operation process;

stopping recording the rotating speed of the engine in response to a rotating speed limiting instruction, and determining a rotating speed limiting value based on the rotating speed recording of the engine;

and adjusting the engine according to the rotating speed limit value, so that the rotating speed of the engine corresponding to the moment when the opening degree of the accelerator pedal is maximum is the rotating speed limit value when the engine works again.

2. The method of claim 1, wherein determining a speed limit based on a speed record of the engine comprises:

acquiring the maximum rotating speed of the engine in the rotating speed record;

the maximum rotation speed of the engine is used as the rotation speed limit value.

3. The method of claim 1, wherein determining a speed limit based on a speed record of the engine comprises:

acquiring the maximum rotating speed of the engine in the rotating speed record;

and taking the product of the maximum rotating speed of the engine and a preset weight as the rotating speed limit value.

4. The method of claim 1, wherein prior to adjusting the engine based on the speed limit value, the method further comprises:

and determining that the current accelerator pedal opening is smaller than a preset threshold value.

5. The method according to any one of claims 1-4, further comprising:

when the constant-efficiency working mode is exited, the rotating speed limit value is stored as a historical limit value;

the method further comprises the following steps:

when the constant-efficiency operation mode is started, if the historical limit value is detected to exist, the engine is adjusted according to the historical limit value, so that the rotating speed of the engine corresponding to the moment when the opening degree of an accelerator pedal is maximum is the historical limit value when the rotating speed limit value is not acquired.

6. The method of any of claims 1-4, wherein prior to recording the speed of the engine during operation, the method further comprises:

detecting whether the highest rotating speed of the engine is adjusted at the moment when the opening degree of the accelerator pedal is maximum;

and if so, adjusting the highest rotating speed of the engine to be an initial threshold value.

7. A loader rotational speed control apparatus, characterized in that the apparatus comprises:

the rotating speed recording module is configured to record the rotating speed of the engine in the working process in response to a rotating speed recording instruction in a constant-efficiency working mode;

a limit value acquisition module configured to execute stopping recording of the rotation speed of the engine in response to a rotation speed limit instruction and determining a rotation speed limit value based on the rotation speed record of the engine;

and the rotating speed limiting module is configured to adjust the engine according to the rotating speed limiting value, so that the rotating speed of the engine corresponding to the moment when the opening degree of an accelerator pedal is maximum is the rotating speed limiting value when the engine works again.

8. The apparatus of claim 7, wherein the determining a speed limit based on a speed record of the engine is performed, the speed record module configured to:

acquiring the maximum rotating speed of the engine in the rotating speed record;

the maximum rotation speed of the engine is used as the rotation speed limit value.

9. An electronic device, comprising:

a processor;

a memory for storing the processor-executable instructions;

wherein the processor is configured to execute the instructions to implement the loader speed control method of any of claims 1 to 6.

10. A computer-readable storage medium, wherein instructions in the computer-readable storage medium, when executed by a processor of an electronic device, enable the electronic device to perform the loader rotation speed control method according to any one of claims 1 to 6.

Technical Field

The invention relates to the technical field of image processing, in particular to a loader rotating speed control method and a related device.

Background

The loader is common construction equipment among the operating mode operation, and it mainly acts on the shovel dress goods, possesses advantages such as operating efficiency height, simple operation. The fixed-efficiency operation mode of the loader is that a driver operates the loader according to the current working condition by adopting proper opening of an accelerator pedal, and the oil consumption is reduced by properly prolonging the operation time.

In the related art, when the loader operates in the constant-efficiency operation mode, the opening degree of the accelerator pedal needs to be controlled by a driver. This type of steering results in different maximum speeds of the loader during each operation, which results in additional fuel consumption.

Disclosure of Invention

The embodiment of the application provides a loader rotating speed control method and a related device, which are used for determining a rotating speed limiting value for limiting the maximum rotating speed of an engine by recording the rotating speed of the engine in the working process, and limiting the rotating speed limiting value to the rotating speed of the engine at the moment when the opening degree of an accelerator pedal is maximum in the subsequent working. Therefore, the situation of extra oil consumption caused by different highest speeds of the loader in each operation process under the constant-efficiency operation mode is relieved.

In a first aspect, an embodiment of the present application provides a method for controlling a rotational speed of a loader, where the method includes:

in the constant-efficiency operation mode, responding to a rotating speed recording instruction, and recording the rotating speed of the engine in the operation process;

stopping recording the rotating speed of the engine in response to a rotating speed limiting instruction, and determining a rotating speed limiting value based on the rotating speed recording of the engine;

and adjusting the engine according to the rotating speed limit value, so that the rotating speed of the engine corresponding to the moment when the opening degree of the accelerator pedal is maximum is the rotating speed limit value when the engine works again.

According to the embodiment of the application, the rotating speed of the engine in the working process is recorded based on the rotating speed recording indication by controlling the loader in the constant-efficiency working mode. And when a rotating speed limiting instruction is received, a rotating speed limiting value used for limiting the maximum rotating speed of the engine is determined according to the rotating speed record, and the rotating speed limiting value is further used as the rotating speed of the engine at the moment when the opening degree of the accelerator pedal is maximum in subsequent operation. When the loader executes subsequent operation in the constant-efficiency operation mode, the operator controls the accelerator pedal to be at the maximum opening, and the rotating speed provided by the engine is the rotating speed limit value. Therefore, the situation of extra oil consumption caused by different highest speeds of the loader in each operation process under the constant-efficiency operation mode is relieved.

In some possible embodiments, the determining a speed limit value based on a speed record of the engine includes:

acquiring the maximum rotating speed of the engine in the rotating speed record;

the maximum rotation speed of the engine is used as the rotation speed limit value.

The embodiment of the application takes the maximum rotating speed of the engine in the operation process of the loader as a rotating speed limiting value. The rotating speed provided by the engine at the moment when the opening degree of the accelerator pedal is maximum is the rotating speed limiting value during subsequent operation, so that extra oil consumption caused by inaccurate control of the opening degree of the accelerator pedal during subsequent operation of the loader is relieved.

In some possible embodiments, the determining a speed limit value based on a speed record of the engine includes:

acquiring the maximum rotating speed of the engine in the rotating speed record;

and taking the product of the maximum rotating speed of the engine and a preset weight as the rotating speed limit value.

The embodiment of the application takes the product of the maximum rotating speed of the engine and the preset weight of the loader in the operation process as the rotating speed limit value. Therefore, the problem that the subsequent operation efficiency is reduced due to the fact that the deviation of the obtained rotating speed limit value is large because the operator inaccurately controls the opening degree of the accelerator pedal can be solved.

In some possible embodiments, before the adjusting the engine according to the rotation speed limit value, the method further comprises:

and determining that the current accelerator pedal opening is smaller than a preset threshold value.

When the highest rotating speed of the engine of the loader is adjusted, the opening degree of the current accelerator pedal needs to be determined to be smaller than the preset threshold value, so that hardware loss caused by speed limitation when the engine rotates at a high rotating speed is avoided.

In some possible embodiments, the method further comprises:

when the constant-efficiency working mode is exited, the rotating speed limit value is stored as a historical limit value;

the method further comprises the following steps:

when the constant-efficiency operation mode is started, if the historical limit value is detected to exist, the engine is adjusted according to the historical limit value, so that the rotating speed of the engine corresponding to the moment when the opening degree of an accelerator pedal is maximum is the historical limit value when the rotating speed limit value is not acquired.

According to the embodiment of the application, when the loader exits from the constant-efficiency operation mode, the rotating speed limit value set before exiting is stored as the historical limit value, so that when the loader operates in the constant-efficiency operation mode again, the engine can be limited by directly adopting the historical limit value, and the operation efficiency is improved.

In some possible embodiments, before recording the rotational speed of the engine during the operation, the method further comprises:

detecting whether the highest rotating speed of the engine is adjusted at the moment when the opening degree of the accelerator pedal is maximum;

and if so, adjusting the highest rotating speed of the engine to be an initial threshold value.

According to the embodiment of the application, before the loader starts to record the rotating speed of the engine each time, whether the highest rotating speed of the current engine is adjusted by the rotating speed/historical limiting value needs to be detected. If so, the speed limit of the engine needs to be released, and the engine is recovered to the initial threshold value, so that the problem that the operation efficiency is reduced because the maximum rotating speed of the engine is not in the initial threshold value and the obtained rotating speed limit value is inaccurate is solved.

In a second aspect, an embodiment of the present application provides a loader rotation speed control device, where the loader rotation speed control device includes:

the rotating speed recording module is configured to record the rotating speed of the engine in the working process in response to a rotating speed recording instruction in a constant-efficiency working mode;

a limit value acquisition module configured to execute stopping recording of the rotation speed of the engine in response to a rotation speed limit instruction and determining a rotation speed limit value based on the rotation speed record of the engine;

and the rotating speed limiting module is configured to adjust the engine according to the rotating speed limiting value, so that the rotating speed of the engine corresponding to the moment when the opening degree of an accelerator pedal is maximum is the rotating speed limiting value when the engine works again.

In some possible embodiments, performing the determining a speed limit value based on a speed record of the engine, the speed record module is configured to:

acquiring the maximum rotating speed of the engine in the rotating speed record;

the maximum rotation speed of the engine is used as the rotation speed limit value.

In some possible embodiments, performing the determining a speed limit value based on a speed record of the engine, the speed record module is configured to:

acquiring the maximum rotating speed of the engine in the rotating speed record;

and taking the product of the maximum rotating speed of the engine and a preset weight as the rotating speed limit value.

In some possible embodiments, before performing the adjusting the engine according to the speed limit value, the speed limit module is further configured to:

and determining that the current accelerator pedal opening is smaller than a preset threshold value.

In some possible embodiments, the apparatus further comprises:

a history limit value module configured to store the rotation speed limit value as a history limit value when the constant efficiency operation mode is exited;

the historical limit module is further configured to:

when the constant-efficiency operation mode is started, if the historical limit value is detected to exist, the engine is adjusted according to the historical limit value, so that the rotating speed of the engine corresponding to the moment when the opening degree of an accelerator pedal is maximum is the historical limit value when the rotating speed limit value is not acquired.

In some possible embodiments, before performing the recording of the rotational speed of the engine during the operation, the rotational speed recording module is further configured to:

detecting whether the highest rotating speed of the engine is adjusted at the moment when the opening degree of the accelerator pedal is maximum;

and if so, adjusting the highest rotating speed of the engine to be an initial threshold value.

In a third aspect, an embodiment of the present application further provides an electronic device, including:

a processor;

a memory for storing the processor-executable instructions;

wherein the processor is configured to execute the instructions to implement any of the methods as provided in the first aspect of the application.

In a fourth aspect, embodiments of the present application further provide a computer-readable storage medium, where instructions, when executed by a processor of an electronic device, enable the electronic device to perform any one of the methods as provided in the first aspect of the present application.

Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1a is a maximum efficiency operation mode road chart provided in the embodiment of the present application;

fig. 1b is a road chart of a fixed-efficiency operation mode provided in the embodiment of the present application;

fig. 2 is an application scenario diagram of a method for controlling a rotational speed of a loader according to an embodiment of the present application;

FIG. 3a is a flowchart illustrating an overall method for controlling the rotational speed of a loader according to an embodiment of the present disclosure;

fig. 3b is a schematic diagram of a prompt message provided in the embodiment of the present application;

FIG. 4 is a schematic view of a rotational speed control apparatus of a loader according to an embodiment of the present disclosure;

fig. 5 is a schematic view of an electronic device according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be described in detail and clearly with reference to the accompanying drawings. In the description of the embodiments of the present application, "/" means "or" unless otherwise specified, for example, a/B may mean a or B; "and/or" in the text is only an association relationship describing an associated object, and means that three relationships may exist, for example, a and/or B may mean: three cases of a alone, a and B both, and B alone exist, and in addition, "a plurality" means two or more than two in the description of the embodiments of the present application.

In the description of the embodiments of the present application, the term "plurality" means two or more unless otherwise specified, and other terms and the like should be understood similarly, and the preferred embodiments described herein are only for the purpose of illustrating and explaining the present application, and are not intended to limit the present application, and features in the embodiments and examples of the present application may be combined with each other without conflict.

To further illustrate the technical solutions provided by the embodiments of the present application, the following detailed description is made with reference to the accompanying drawings and the detailed description. Although the embodiments of the present application provide method steps as shown in the following embodiments or figures, more or fewer steps may be included in the method based on conventional or non-inventive efforts. In steps where no necessary causal relationship exists logically, the order of execution of the steps is not limited to that provided by the embodiments of the present application. The method can be executed in the order of the embodiments or the method shown in the drawings or in parallel in the actual process or the control device.

In the prior art, the operation modes of the loader comprise a maximum efficiency operation mode and a constant efficiency operation mode. Specifically, as shown in fig. 1a and 1b, fig. 1a is a road spectrum diagram corresponding to the maximum efficiency operation mode of the loader, and fig. 1b is a road spectrum diagram corresponding to the constant efficiency operation mode of the loader. In the coordinate system shown in fig. 1a and 1b, the abscissa indicates the engine speed, the ordinate indicates the engine torque, and the black color is removed to indicate the engine external characteristic curve. Through comparison, when the loader works in the maximum efficiency working mode, the operator controls the opening degree of the accelerator pedal to be kept maximum so as to enable the rotating speed of the engine to be kept at the highest rotating speed all the time, and therefore the working efficiency is guaranteed. Under the constant-efficiency operation mode, the opening degree of the accelerator pedal can be automatically adjusted by an operator according to working condition information such as the volume of materials to be loaded, gravity, operation distance and the like, and the operator can not step the accelerator to the bottom (namely, the opening degree of the accelerator pedal is controlled to be maximum) in the operation under the mode. Therefore, the maximum efficiency operation mode is mostly suitable for emergency working conditions, and the operation duration of the loader is relatively increased in the fixed efficiency operation mode, so that the operation comfort can be improved, and the oil consumption is reduced.

In actual conditions, when the loader carries out loading and transporting aiming at each batch of goods, the volume and the weight of the goods in single operation are not large. Considering that when the loader works in the fixed-efficiency working mode, the opening degree of an accelerator pedal needs to be controlled by a driver, the highest speed of the loader in each working process is different due to the artificial control mode, extra oil consumption is caused, and the working comfort degree of operators is reduced.

In order to solve the above problems, the inventive concept of the present application is: and determining a rotating speed limit value for limiting the maximum rotating speed of the engine by recording the rotating speed of the engine in the working process, and limiting the rotating speed limit value to the rotating speed of the engine at the moment when the opening degree of an accelerator pedal is maximum in the subsequent working. Therefore, the situation of extra oil consumption caused by different highest speeds of the loader in each operation process under the constant-efficiency operation mode is relieved.

The following describes a loader rotation speed control method provided in an embodiment of the present application in detail with reference to the accompanying drawings.

Referring to fig. 2, a schematic diagram of an application environment provided in the embodiment of the present application is shown.

As shown in fig. 2, the application environment includes a network 10, a loader 20, a server 30, and goods 40. The server 30 may be a server installed inside the loader 20, or may be a cloud server.

When the loader 20 carries the goods 40 in the constant efficiency operation mode, the rotation speed of the engine in the first carrying process is monitored in real time through the server 30, and therefore the highest rotation speed of the engine in the first carrying process is determined.

In some possible embodiments, the loader 20 obtains cargo information such as the quantity, volume, and weight of the cargo 40 via the network 10.

In some possible embodiments, the maximum engine speed determined during the first transportation of the cargo 40 by the loader 20 is used as the maximum engine speed that can be reached by the engine at the time when the accelerator pedal is opened to the maximum during the subsequent operation.

After introducing the application scenario provided by the embodiment of the present application, a detailed description is provided below for a method for controlling a rotational speed of a loader provided by the embodiment of the present application, specifically as shown in fig. 3a, including:

when the operator carries the load with the loader, the operation mode of the loader is selected based on actual conditions such as a predetermined time of the construction operation. When the goods are conveyed in the fixed-efficiency operation mode which is relatively long in operation time, high in operation comfort and low in oil consumption, an operator can enable the loader to enter the fixed-efficiency operation mode by pressing the fixed-efficiency button for controlling the loader to enter the fixed-efficiency operation mode.

Generally, the quality of the goods carried by the loader in a single operation is not very different. Under the constant-efficiency operation mode, the opening of the accelerator pedal is automatically controlled by an operator, the quality of goods needing to be carried in each operation is basically the same, but the manual control mode cannot ensure that the opening of the accelerator pedal in each operation is the same, so that the operation time is increased, and extra oil consumption is caused.

Based on the fact that the rotation speed of the engine during a single operation of the loader is recorded, and the rotation speed limiting value used for limiting the maximum rotation speed of the engine is determined according to the rotation speed record after the operation is finished. After the rotating speed limit value is obtained, when the subsequent operation is ensured by setting the maximum rotating speed of the engine to the rotating speed limit value in an idle mode, when an operator steps on an accelerator pedal to the end (namely, the opening of the accelerator pedal is controlled to be maximum), the maximum rotating speed which can be provided by the engine is the rotating speed limit value, and therefore the situations of long operation time and extra oil consumption caused by inaccurate control of the operator on the opening of the accelerator pedal are relieved.

Step 301: and under the constant-efficiency operation mode, responding to the rotating speed recording indication, and recording the rotating speed of the engine in the operation process.

And in the constant-efficiency operation mode, if a rotating speed recording instruction is received, the loader starts to acquire and record the rotating speed of the engine. When the loader is operated, the efficiency setting button can be set, and before the loader starts to operate, an operator can press the efficiency setting button once to control the loader to enter the efficiency setting operation mode and start to record the real-time rotating speed of the engine.

Step 302: in response to a speed limit indication, stopping recording the speed of the engine and determining a speed limit value based on the speed record of the engine.

When the efficiency setting button is pressed once again, the operator can send the rotating speed limit instruction to the loader. Specifically, for example, ten boxes of goods with comparable mass and size are handled by a loader, which can handle 5 boxes at a time. Before the loader starts to work, an operator controls the loader to enter a constant-efficiency working mode by pressing a constant-efficiency button once, and records the real-time rotating speed of an engine. After the operator controls the loader to transport 5 boxes of goods, the single operation is finished. At this time, the loader can be controlled to stop recording the engine speed by pressing the efficiency fixing button once again, and the speed limit value is determined according to the speed record.

In some possible embodiments, when determining the speed limit, the maximum speed of the engine in the speed record may be obtained and used as the speed limit. For example, when a loader carries a batch of goods, it needs to carry 3 times, i.e. 3 times of a single operation. The maximum rotating speed of the engine required by single operation can be provided when the opening of the accelerator pedal of the loader is 70%, but an operator cannot guarantee that the opening of the accelerator pedal is accurately controlled to be still 70% when the loader operates again, so that the operator can step the accelerator pedal to the end to control the engine to reach a rotating speed limit value when the loader operates again, and the situations of operation duration increase and extra oil consumption caused by inaccurate control of the opening of the accelerator pedal by the operator are relieved.

In addition, the maximum engine speed obtained by the method is usually larger than the actual required engine speed considering that the operator can only control the opening degree of the accelerator pedal through experience to check whether the loader reaches the required maximum engine speed. To further reduce fuel consumption, the product of the maximum rotation speed of the engine and the predetermined weight may be used as the rotation speed limit value. The preset weight can be set according to the actual application scene and the operation habit of the operator, and is, for example, 0.9, 0.95, and the like.

Step 303: and adjusting the engine according to the rotating speed limit value, so that the rotating speed of the engine corresponding to the moment when the opening degree of the accelerator pedal is maximum is the rotating speed limit value when the engine works again.

Consider that there may be differences in engine speed during a single operation. For example, when the operator controls the loader to move backward, the operator needs to step on the accelerator pedal to obtain higher engine speed to provide driving, and when the operator controls the loader to stop, the operator needs to release the accelerator pedal to control the engine to slow down. Based on the above, before the engine is adjusted according to the rotation speed limit value, it is determined that the current accelerator pedal opening is smaller than the preset threshold value so as to avoid hardware loss caused by speed limitation when the engine rotates at a high speed. The preset threshold may be determined according to actual conditions, for example, the preset threshold may be that the opening degree of the accelerator pedal is 0.

In order to be suitable for more application scenes, after the loader carries goods, when the loader exits from the fixed-efficiency operation mode, the rotating speed limit value can be stored as a historical limit value. Thus, when the loader is used for carrying again, if the operation is performed in the constant-efficiency operation mode, it is possible to detect whether or not the history limit value is present after entering the constant-efficiency operation mode. If the historical limit value exists, the maximum rotating speed of the engine can be adjusted according to the historical limit value, so that the rotating speed of the engine corresponding to the moment when the opening degree of the accelerator pedal is maximum is the historical limit value when the loader does not obtain the rotating speed limit value.

Specifically, for example, before the work, the operator determines from actual experience that the single-pass conveying amount of the loader does not greatly differ from the conveying amount in the previous work with respect to the load conveyed this time. The fact that the rotating speed limit value does not need to be acquired again in the transportation process indicates that the rotating speed of the engine can be adjusted by directly adopting the rotating speed limit value acquired in the previous operation process (namely the stored historical limit value). At the moment, the operator can control the loader to enter the constant efficiency operation mode by continuously pressing the constant efficiency button twice. The loader starts to detect whether there is a history limit value by recognizing that the constant efficiency button is pressed twice in succession. If so, the historical limit value is taken as the maximum engine speed corresponding to the maximum time of the accelerator pedal. If the historical limit value is not detected to be stored, as shown in fig. 3b, a prompt message indicating that the historical limit value is not stored is output, the prompt message indicating that the rotating speed limit value is not stored needs to be acquired for the operator to check, and the real-time rotating speed of the engine is automatically recorded.

In some possible embodiments, before the rotation speed of the engine during the operation of the loader is recorded, whether the maximum rotation speed of the engine is adjusted or not at the moment when the current accelerator pedal opening degree is maximum is detected. If the engine speed is adjusted, the maximum rotation speed of the engine needs to be adjusted to be an initial threshold value.

Specifically, for example, when the loader loads 100 boxes of goods, 5 boxes of goods can be loaded in a single operation. After the first transportation of 5 boxes of goods, the rotation speed limit value v is obtained₁After that, the operator can control the loader to stop recording the engine speed by pressing the efficiency fixing button once again, and the rotating speed limit value is used as the maximum rotating speed of the engine when the operator works again. After the operator transports five boxes of goods again, the operator wants to improve the operation efficiency and reduce the operation time. In this case, the obtained rotation speed limit value is set to be smaller, and the operation time is longer. At the moment, the loader can be controlled to acquire the rotating speed limit value again by pressing the efficiency operation mode button for a long time. The maximum rotating speed of the engine is v₁To improve the work efficiency, the engine has to have a ratio v₁Higher speeds, the maximum engine speed needs to be restored to the initial threshold.

Based on the same inventive concept, the embodiment of the present application further provides a loader rotation speed control apparatus 400, specifically as shown in fig. 4, including:

a speed recording module 401 configured to record the speed of the engine during operation in response to a speed recording indication in a constant efficiency operation mode;

a limit value obtaining module 402 configured to perform stopping recording of the rotational speed of the engine in response to a rotational speed limit indication and determining a rotational speed limit value based on the rotational speed record of the engine;

and a rotation speed limiting module 403, configured to perform adjustment on the engine according to the rotation speed limiting value, so that when the engine works again, the rotation speed of the engine corresponding to the maximum opening of the accelerator pedal is the rotation speed limiting value.

In some possible embodiments, performing said determining a rotational speed limit value based on a rotational speed record of said engine, said rotational speed record module 401 is configured to:

acquiring the maximum rotating speed of the engine in the rotating speed record;

the maximum rotation speed of the engine is used as the rotation speed limit value.

In some possible embodiments, performing said determining a rotational speed limit value based on a rotational speed record of said engine, said rotational speed record module 401 is configured to:

acquiring the maximum rotating speed of the engine in the rotating speed record;

and taking the product of the maximum rotating speed of the engine and a preset weight as the rotating speed limit value.

In some possible embodiments, the speed limit module 403 is further configured to, prior to performing the engine adjustment according to the speed limit value:

and determining that the current accelerator pedal opening is smaller than a preset threshold value.

In some possible embodiments, the apparatus further comprises:

a history limit value module configured to store the rotation speed limit value as a history limit value when the constant efficiency operation mode is exited;

the historical limit module is further configured to:

when the constant-efficiency operation mode is started, if the historical limit value is detected to exist, the engine is adjusted according to the historical limit value, so that the rotating speed of the engine corresponding to the moment when the opening degree of an accelerator pedal is maximum is the historical limit value when the rotating speed limit value is not acquired.

In some possible embodiments, before performing the recording of the engine speed during the operation, the speed recording module 401 is further configured to:

detecting whether the highest rotating speed of the engine is adjusted at the moment when the opening degree of the accelerator pedal is maximum;

and if so, adjusting the highest rotating speed of the engine to be an initial threshold value.

The electronic device 130 according to this embodiment of the present application is described below with reference to fig. 5. The electronic device 130 shown in fig. 5 is only an example, and should not bring any limitation to the functions and the scope of use of the embodiments of the present application.

As shown in fig. 5, the electronic device 130 is represented in the form of a general electronic device. The components of the electronic device 130 may include, but are not limited to: the at least one processor 131, the at least one memory 132, and a bus 133 that connects the various system components (including the memory 132 and the processor 131).

Bus 133 represents one or more of any of several types of bus structures, including a memory bus or memory controller, a peripheral bus, a processor, or a local bus using any of a variety of bus architectures.

The memory 132 may include readable media in the form of volatile memory, such as Random Access Memory (RAM)1321 and/or cache memory 1322, and may further include Read Only Memory (ROM) 1323.

Memory 132 may also include a program/utility 1325 having a set (at least one) of program modules 1324, such program modules 1324 including, but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which, or some combination thereof, may comprise an implementation of a network environment.

The electronic device 130 may also communicate with one or more external devices 134 (e.g., keyboard, pointing device, etc.), with one or more devices that enable a user to interact with the electronic device 130, and/or with any devices (e.g., router, modem, etc.) that enable the electronic device 130 to communicate with one or more other electronic devices. Such communication may occur via input/output (I/O) interfaces 135. Also, the electronic device 130 may communicate with one or more networks (e.g., a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network, such as the internet) via the network adapter 136. As shown, network adapter 136 communicates with other modules for electronic device 130 over bus 133. It should be understood that although not shown in the figures, other hardware and/or software modules may be used in conjunction with electronic device 130, including but not limited to: microcode, device drivers, redundant processors, external disk drive arrays, RAID systems, tape drives, and data backup storage systems, among others.

In an exemplary embodiment, a computer-readable storage medium comprising instructions, such as memory 132 comprising instructions, executable by processor 131 of apparatus 300 to perform the loader speed control method provided herein is also provided. Alternatively, the computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.

In an exemplary embodiment, there is also provided a computer program product comprising computer programs/instructions which, when executed by the processor 131, implement the loader rotational speed control method as provided herein.

In exemplary embodiments, various aspects of a loader rotational speed control method provided by the present application may also be implemented in the form of a program product including program code for causing a computer device to perform the steps of a loader rotational speed control method according to various exemplary embodiments of the present application described above in this specification when the program product is run on the computer device.

The program product may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium include: an electrical connection having one or more wires, a portable disk, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

The program product for image scaling of embodiments of the present application may employ a portable compact disc read only memory (CD-ROM) and include program code, and may be run on an electronic device. However, the program product of the present application is not limited thereto, and in this document, a readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.

A readable signal medium may include a propagated data signal with readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A readable signal medium may also be any readable medium that is not a readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.

Program code embodied on a readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

Program code for carrying out operations of the present application may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the consumer electronic device, partly on the consumer electronic device, as a stand-alone software package, partly on the consumer electronic device and partly on a remote electronic device, or entirely on the remote electronic device or server. In the case of remote electronic devices, the remote electronic devices may be connected to the consumer electronic device through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external electronic device (e.g., through the internet using an internet service provider).

It should be noted that although several units or sub-units of the apparatus are mentioned in the above detailed description, such division is merely exemplary and not mandatory. Indeed, the features and functions of two or more units described above may be embodied in one unit, according to embodiments of the application. Conversely, the features and functions of one unit described above may be further divided into embodiments by a plurality of units.

Further, while the operations of the methods of the present application are depicted in the drawings in a particular order, this does not require or imply that these operations must be performed in this particular order, or that all of the illustrated operations must be performed, to achieve desirable results. Additionally or alternatively, certain steps may be omitted, multiple steps combined into one step execution, and/or one step broken down into multiple step executions.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable image scaling apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable image scaling apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable image scaling apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable image scaling device to cause a series of operational steps to be performed on the computer or other programmable device to produce a computer implemented process such that the instructions which execute on the computer or other programmable device provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.