Calibration method and device of engineering machinery, control method and device of engineering machinery, engineering machinery and medium

Abstract

The embodiment of the invention discloses a calibration method and device of engineering machinery, a control method and device of the engineering machinery, the engineering machinery and a medium, and belongs to the technical field of equipment control. The calibration method of the engineering machinery comprises the following steps: in response to a received power calibration request, determining a calibration loading rate corresponding to the absorption power of a main pump at the current altitude; according to the atmospheric pressure and the altitude coefficient corresponding to the current altitude, the recommended absorption power of the main pump at the current altitude is determined; adjusting the real-time absorption power of the main pump to the recommended absorption power based on the calibrated loading rate; a speed reduction value of the engine is obtained, and whether the speed reduction value is smaller than or equal to a preset speed reduction threshold value or not is determined; and under the condition that the speed-down value is larger than a preset speed-down threshold value, the recommended absorption power of the main pump is updated based on the obtained power correction till the speed-down value is smaller than or equal to the preset speed-down threshold value, and the recommended absorption power serves as the calibrated absorption power. The absorption power and the loading rate are calibrated in advance, so that the phenomenon that the engineering machinery falls down and shuts down is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of equipment control, and specifically to a calibration method, a control method, a device, an engineering machine, and a medium for an engineering machine. Background Art

[0002] With the rapid development of machinery manufacturing technology, construction machinery such as excavators are widely used in a variety of engineering operation scenarios. In the actual operation process, construction machinery has the phenomenon of stalling, which refers to the deterioration of the engine performance of the construction machinery, resulting in excessive engine speed drop or even engine stalling.

[0003] Engine speed drop usually refers to the phenomenon that the engine speed drops below the target speed, and the engine's responsiveness refers to the ability of the engine to recover to the target speed after speed drop when the load changes. When construction machinery using fuel engines is operating in high-altitude areas, due to the lower air pressure and thin oxygen in high-altitude areas, the engine's insufficient air intake reduces the heat generated by the combustion of the oil and gas mixture, and the mechanical energy converted by the engine is also reduced, that is, the engine power is reduced. After the engine power is reduced, it is easy for the engine to be unable to match the needs of the main hydraulic pump, and then the engine will be stuck, making it difficult for construction machinery to adapt to high-altitude operation scenarios. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a calibration method, a control method, a device, a construction machinery and a medium for construction machinery. The calibration method for construction machinery is used to solve the problem in the prior art that construction machinery is difficult to adapt to high-altitude working scenarios.

[0005] In order to achieve the above-mentioned object, the first aspect of the present application provides a calibration method for an engineering machine, the engineering machine comprising a main pump and an engine, and the calibration method for the engineering machine comprising:

[0006] In response to the received power calibration request, determine a calibration loading rate corresponding to the absorbed power of the main pump at the current altitude;

[0007] According to the atmospheric pressure and altitude coefficient corresponding to the current altitude, determine the recommended absorption power of the main pump at the current altitude;

[0008] Based on the calibrated loading rate, the real-time absorbed power of the main pump is adjusted to the recommended absorbed power;

[0009] Obtaining a speed drop value of the engine, and determining whether the speed drop value is less than or equal to a preset speed drop threshold;

[0010] When the speed drop value is greater than the preset speed drop threshold, the recommended absorption power of the main pump is updated based on the acquired power correction amount until the speed drop value is less than or equal to the preset speed drop threshold, and the corresponding recommended absorption power is used as the calibrated absorption power.

[0011] In the embodiment of the present application, the engineering machinery further includes an operating device;

[0012] Obtaining the engine speed drop value and determining whether the speed drop value is less than or equal to a preset speed drop threshold value, including:

[0013] Control the working device to perform the target action and determine whether the load of the working device has reached the maximum value;

[0014] When the load of the working device reaches a maximum value, the speed drop value of the engine is obtained, and it is determined whether the speed drop value is less than or equal to a preset speed drop threshold.

[0015] In an embodiment of the present application, in response to a received power calibration request, determining a calibration loading rate corresponding to the absorbed power of the main pump at the current altitude includes:

[0016] In response to the received power calibration request, based on the obtained rate correction, the current loading rate corresponding to the absorbed power of the main pump is updated until the speed drop value is less than or equal to the preset speed drop threshold, and the corresponding current loading rate is used as the calibrated loading rate at the current altitude.

[0017] In an embodiment of the present application, the calibrated loading rate includes a first rate and a second rate, and the second rate is greater than the first rate;

[0018] Based on the calibrated loading rate, adjust the real-time absorbed power of the main pump to the recommended absorbed power, including:

[0019] When the real-time absorbed power of the engine is less than a preset absorbed power threshold, adjusting the real-time absorbed power of the engine based on a first rate, wherein the preset absorbed power threshold is less than the recommended absorbed power;

[0020] When the real-time absorbed power of the engine is greater than or equal to the absorbed power threshold, the real-time absorbed power of the engine is adjusted based on the second rate until the real-time absorbed power of the engine is equal to the recommended absorbed power.

[0021] In an embodiment of the present application, the calibration method of the engineering machinery further includes:

[0022] A display interface is generated according to the calibrated loading rate, the drop speed value and the calibrated absorbed power.

[0023] A second aspect of the present application provides a control method for an engineering machine, the control method for an engineering machine comprising:

[0024] In response to receiving a high altitude operation request, obtaining a calibrated loading rate and a calibrated absorbed power at a current altitude, wherein the calibrated loading rate and the calibrated absorbed power are both determined according to the calibration method of the engineering machinery described above;

[0025] Based on the calibrated loading rate, the real-time absorbed power of the main pump is adjusted to the calibrated absorbed power.

[0026] In an embodiment of the present application, the control method of the engineering machinery further includes:

[0027] In response to receiving a low altitude operation request, obtaining an initial loading rate and an initial absorbed power of the construction machinery, wherein the initial loading rate is greater than a calibrated loading rate, and the initial absorbed power is greater than the calibrated absorbed power;

[0028] Based on the initial loading rate, the real-time absorbed power of the main pump is adjusted to the initial absorbed power.

[0029] A third aspect of the present application provides a control device, comprising:

[0030] a memory configured to store instructions;

[0031] The processor is configured to call instructions from the memory and implement the calibration method of the engineering machinery or the control method of the engineering machinery when executing the instructions.

[0032] A fourth aspect of the present application provides an engineering machine, comprising:

[0033] According to the control device described above;

[0034] an engine configured to drive a main pump;

[0035] The main pump is configured to pump hydraulic oil to drive the construction machinery.

[0036] A fifth aspect of the present application provides a machine-readable storage medium having instructions stored thereon, the instructions being used to enable a machine to execute the calibration method for engineering machinery described above, or the control method for engineering machinery described above.

[0037] The present application provides a calibration method for engineering machinery, including: responding to a received power calibration request, determining a calibration loading rate corresponding to the absorption power of the main pump at the current altitude; determining the recommended absorption power of the main pump at the current altitude according to the atmospheric pressure and altitude coefficient corresponding to the current altitude; adjusting the real-time absorption power of the main pump to the recommended absorption power based on the calibration loading rate; obtaining the engine speed drop value, and determining whether the speed drop value is less than or equal to a preset speed drop threshold; when the speed drop value is greater than the preset speed drop threshold, updating the recommended absorption power of the main pump based on the acquired power correction amount, until the speed drop value is less than or equal to the preset speed drop threshold, and using the recommended absorption power as the calibration absorption power. By pre-calibrating the absorption power and the loading rate corresponding to the absorption power at different altitudes, the engineering machinery can directly use the pre-calibrated calibration absorption power and calibration loading rate in the actual high-altitude operation scene, so that the main pump absorption power of the engineering machinery can match the engine output power, avoid the speed drop and stall phenomenon of the engineering machinery, and enable the engineering machinery to adapt to the high-altitude operation scene.

[0038] Other features and advantages of the embodiments of the present application will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the following specific implementations, they are used to explain the embodiments of the present application, but do not constitute a limitation on the embodiments of the present application. In the accompanying drawings:

[0040] Figure 1 A schematic diagram of a flow chart of a calibration method for engineering machinery according to an embodiment of the present application is schematically shown;

[0041] Figure 2 An example diagram of a first display interface according to an embodiment of the present application is schematically shown;

[0042] Figure 3 An example diagram of a second display interface according to an embodiment of the present application is schematically shown;

[0043] Figure 4 A flow chart of a control method for engineering machinery according to an embodiment of the present application is schematically shown. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. It should be understood that the specific implementation methods described herein are only used to illustrate and explain the embodiments of the present application, and are not used to limit the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0045] It should be noted that if directional indication is involved in the embodiments of the present application, the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0046] Example 1

[0047] Figure 1 The following schematically shows a flow chart of a calibration method for engineering machinery according to an embodiment of the present application. Figure 1 As shown, an embodiment of the present application provides a calibration method for an engineering machine, the engineering machine includes a main pump and an engine, and the calibration method for the engineering machine includes:

[0048] S110, in response to the received power calibration request, determining a calibration loading rate corresponding to the absorbed power of the main pump at the current altitude.

[0049] In this embodiment, the engineering machinery also includes a main valve, and when the engineering machinery performs engineering operations, the main valve is controlled to open. The main pump is used to pump hydraulic oil to the operating device through the main valve to drive the operating device to perform engineering operations. When the engineering machinery performs engineering operations in high-altitude areas such as plateaus, due to the deterioration of the engine power performance, if the loading rate of the main pump's absorbed power is not reduced, the engine will be unable to respond to the needs of the main pump, resulting in the engine slowing down and stalling.

[0050] In this embodiment, the calibration of the engineering machinery includes loading rate calibration and absorption power calibration. The absorption power of the main pump refers to the power required by the main pump during operation, which is the power absorbed from the external energy source in order for the main pump to overcome the resistance of the fluid and maintain the flow rate. When the engineering machinery is operating in a low-altitude scenario, the absorption power of the main pump is adjusted based on the initial loading rate. When the engineering machinery is operating in a high-altitude scenario, in response to the received power calibration request, the calibrated loading rate corresponding to the absorption power of the main pump at the current altitude is determined. Since the engine responsiveness deteriorates in high-altitude scenarios, the calibrated loading rate is less than the initial loading rate, which delays the absorption power loading of the engineering machinery in high-altitude scenarios, suppresses the engine speed drop, and thus avoids the phenomenon of engineering machinery stalling.

[0051] In an embodiment of the present application, in response to a received power calibration request, determining a calibration loading rate corresponding to the absorbed power of the main pump at the current altitude includes:

[0052] In response to the received power calibration request, based on the obtained rate correction, the current loading rate corresponding to the absorbed power of the main pump is updated until the speed drop value is less than or equal to the preset speed drop threshold, and the corresponding current loading rate is used as the calibrated loading rate at the current altitude.

[0053] In response to the received power calibration request, the current loading rate corresponding to the absorbed power of the main pump is updated based on the acquired rate correction. Specifically, after the current loading rate corresponding to the absorbed power of the main pump is updated based on the acquired rate correction, the engine speed drop value is updated, and it is determined again whether the speed drop value is less than or equal to the preset speed drop threshold. If the speed drop value is still greater than the preset speed drop threshold after the current loading rate is updated, a new rate correction is obtained, and the step of updating the current loading rate corresponding to the absorbed power of the main pump based on the acquired rate correction is performed again. By repeatedly adjusting the power correction amount, and updating the current loading rate corresponding to the absorbed power of the main pump based on the acquired rate correction amount, until the speed drop value is less than or equal to the preset speed drop threshold. The current loading rate corresponding to the speed drop value less than or equal to the preset speed drop threshold is used as the calibrated loading rate. The calibrated loading rate is less than the initial loading rate, so that the absorbed power loading of the engineering machinery in the high-altitude scene is delayed, the engine speed drop is suppressed, and the phenomenon of the engineering machinery being stuck is avoided.

[0054] S120, determining the recommended absorption power of the main pump at the current altitude according to the atmospheric pressure and altitude coefficient corresponding to the current altitude.

[0055] According to the atmospheric pressure and altitude coefficient corresponding to the current altitude, determine the recommended absorption power of the main pump at the current altitude:

[0056] Power = k*P_air

[0057] Among them, Power is the recommended absorption power of the main pump at the current altitude, P_air is the atmospheric pressure corresponding to the current altitude, and k is the altitude coefficient.

[0058] The altitude coefficients corresponding to different altitudes are determined through a large number of tests, which will not be elaborated here. After determining the altitude coefficient, the recommended absorption power of the pump can be automatically calculated based on the detected atmospheric pressure. Establishing the relationship between absorption power and atmospheric pressure is equivalent to establishing the relationship between series power and altitude. As the altitude increases, the atmospheric pressure decreases, and the recommended absorption power of the main pump is determined to decrease accordingly.

[0059] S130: Based on the calibrated loading rate, the real-time absorption power of the main pump is adjusted to the recommended absorption power.

[0060] Based on the calibrated loading rate, the real-time absorption power of the main pump is adjusted to the recommended absorption power to facilitate the calibration of the absorption power of the main pump. During the change of the absorption power of the main pump, the absorption power of the main pump is increased or decreased with the calibrated loading rate as the step size. Since the calibrated loading rate corresponding to the high-altitude scene is lower than the initial loading rate corresponding to the low-altitude scene, the absorption power change of the main pump in the high-altitude scene is delayed, so that the main pump can adapt to the responsiveness of the engine after deterioration, so that the construction machinery can better adapt to the high-altitude operation scene.

[0061] S140, obtaining a speed drop value of the engine, and determining whether the speed drop value is less than or equal to a preset speed drop threshold.

[0062] The engine speed drop value is obtained, and it is determined whether the speed drop value is less than or equal to a preset speed drop threshold. It should be understood that the preset speed drop threshold is set according to actual needs, and can be any value such as 200 rpm and 250 rpm, which is not limited here.

[0063] In the embodiment of the present application, the engineering machinery further includes an operating device;

[0064] Obtaining the engine speed drop value and determining whether the speed drop value is less than or equal to a preset speed drop threshold value, including:

[0065] Control the working device to perform the target action and determine whether the load of the working device has reached the maximum value;

[0066] When the load of the working device reaches a maximum value, the speed drop value of the engine is obtained, and it is determined whether the speed drop value is less than or equal to a preset speed drop threshold.

[0067] In this embodiment, the working device includes a cylinder, a boom, an arm and a bucket, and the boom, the arm and the bucket are pushed by the cylinder to perform various types of actions. The target action is the action of the working device when the load is the largest. The target action is different for different types of engineering machinery, and it will not be described here. For ease of understanding, the engineering machinery in the embodiment of the present application is an excavator, and the target action is an overflow action. Controlling the working device to perform the target action means controlling the boom, the arm and the bucket to perform overflow actions respectively.

[0068] Determine whether the load of the working device has reached the maximum value. When the load of the working device reaches the maximum value, the boom overflows when it is lifted, the arm overflows when it is retracted, and the bucket overflows when it is retracted. Overflow refers to the phenomenon that when the cylinder of the working device reaches the end of the stroke and cannot continue to move, the hydraulic oil has nowhere to be contained and overflows back to the tank. When the load of the working device reaches the maximum value, the pressure of the main pump rises to the maximum value, the engine speed drop value is obtained, and it is determined whether the speed drop value is less than or equal to the preset speed drop threshold. The load reaches the maximum value when the boom, arm and bucket overflow, which can detect the engine's response and overcoming of large loads.

[0069] S150, when the speed drop value is greater than the preset speed drop threshold, based on the preset power correction amount, update the recommended absorption power of the main pump until the speed drop value is less than or equal to the preset speed drop threshold, and use the corresponding recommended absorption power as the calibrated absorption power.

[0070] When the speed drop value is greater than the preset speed drop threshold, the recommended absorption power of the main pump is updated based on the acquired power correction value:

[0071] Power = k*P_air+offset

[0072] Among them, Power is the recommended absorption power of the main pump at the current altitude, P_air is the atmospheric pressure corresponding to the current altitude, k is the altitude coefficient, and offset is the preset power correction amount.

[0073] After updating the recommended absorbed power of the main pump based on the acquired power correction, the engine speed drop value is updated, and it is determined again whether the speed drop value is less than or equal to the preset speed drop threshold. If the speed drop value is still greater than the preset speed drop threshold after the recommended absorbed power of the main pump is updated, a new power correction is acquired, and the step of updating the recommended absorbed power of the main pump based on the acquired power correction is performed again. The power correction is repeatedly adjusted, and the recommended absorbed power of the main pump is updated based on the acquired power correction until the speed drop value is less than or equal to the preset speed drop threshold. The recommended absorbed power corresponding to the speed drop value less than or equal to the preset speed drop threshold is used as the calibrated absorbed power to keep the engine speed drop within an acceptable range. It should be understood that both the acquisition rate correction and the power correction need to be limited within a reasonable range to avoid calibration anomalies caused by misoperation.

[0074] By pre-calibrating the absorption power and the corresponding loading rate at different altitudes, the construction machinery can directly use the pre-calibrated absorption power and calibrated loading rate in actual high-altitude operation scenarios, so that the main pump absorption power of the construction machinery can be matched with the engine output power, avoiding the speed drop and stalling of the construction machinery, and enabling the construction machinery to adapt to high-altitude operation scenarios.

[0075] In an embodiment of the present application, the calibrated loading rate includes a first rate and a second rate, and the second rate is greater than the first rate;

[0076] Based on the calibrated loading rate, adjust the real-time absorbed power of the main pump to the recommended absorbed power, including:

[0077] When the real-time absorbed power of the engine is less than a preset absorbed power threshold, adjusting the real-time absorbed power of the engine based on a first rate, wherein the preset absorbed power threshold is less than the recommended absorbed power;

[0078] When the real-time absorbed power of the engine is greater than or equal to the absorbed power threshold, the real-time absorbed power of the engine is adjusted based on the second rate until the real-time absorbed power of the engine is equal to the recommended absorbed power.

[0079] In this embodiment, the absorption power of the main pump is divided into a first adjustment stage and a second adjustment stage, and the absorption power adjustment stage is determined based on whether the real-time absorption power of the engine is less than the preset absorption power threshold, that is, the improvement of the engine responsiveness is determined based on the real-time absorption power of the engine. The preset absorption power threshold is any value less than the recommended absorption power. The value of the preset absorption power threshold is set according to actual needs and is not limited here. For ease of understanding, the absorption power threshold in the embodiment of the present application is half of the recommended absorption power, that is, assuming that the recommended absorption power value is 50w, the absorption power threshold is 25w.

[0080] During the change of the absorbed power of the main pump, the absorbed power of the main pump is increased or decreased with the calibrated loading rate as the step size. Specifically, when the real-time absorbed power of the engine is less than the preset absorbed power threshold, it is determined to be the first adjustment stage. The first adjustment stage is the initial process of the engine entering loading from waiting for loading. Since the engine suddenly switches to loading, the turbocharger of the engine needs to speed up, the injection amount needs to be increased, and the engine responsiveness is poor. The calibrated loading rate is determined to be the slower first rate, and the real-time absorbed power of the engine is adjusted based on the first rate.

[0081] When the real-time absorbed power of the engine is greater than or equal to the absorbed power threshold, it is determined to be the second adjustment stage. The first adjustment stage is a process in which the engine load continues to increase, the engine turbocharger has completed the speed increase, the fuel injection amount has been increased, the engine responsiveness has been improved, the calibrated loading rate is determined to be a steeper second rate, and the real-time absorbed power of the engine is adjusted based on the second rate until the real-time absorbed power of the engine is equal to the recommended absorbed power.

[0082] In an embodiment of the present application, the calibration method of the engineering machinery further includes:

[0083] A display interface is generated according to the calibrated loading rate, the drop speed value and the calibrated absorbed power.

[0084] In this embodiment, the engineering machinery further includes a human-machine interaction device, the type of which is set according to actual needs, and may be a display screen, a dashboard, etc. A display interface is generated according to the calibrated loading rate, the speed drop value, and the calibrated absorbed power, and the generated display interface is displayed through the human-machine interaction device.

[0085] Figure 2 An example diagram of a display interface of a first engineering machine according to an embodiment of the present application is schematically shown.

[0086] In this embodiment, the engine speed curve is displayed through the display interface, and then the engine speed drop value is displayed. When the loading rate is in the first adjustment stage, the loading rate is calibrated as the slower first rate in the display interface. The user can observe the engine speed drop through the display interface, and adjust the value of the speed correction amount through buttons or knobs to reduce the loading rate of the absorbed power, so that the construction machinery can adapt to high-altitude operation scenarios.

[0087] Figure 3 An example diagram of a display interface of a second engineering machine according to an embodiment of the present application is schematically shown.

[0088] When the loading rate is in the second adjustment stage, the loading rate is calibrated in the display interface as the steeper second rate. In this embodiment, the percentage of the initial absorption power to the calibrated absorption power is displayed in a columnar manner on the display interface, wherein the initial absorption power is the absorption power of the construction machinery in a low altitude scenario, and the initial absorption power is greater than the calibrated absorption power.

[0089] The present application provides a calibration method for engineering machinery, including: responding to a received power calibration request, determining a calibration loading rate corresponding to the absorption power of the main pump at the current altitude; determining the recommended absorption power of the main pump at the current altitude according to the atmospheric pressure and altitude coefficient corresponding to the current altitude; adjusting the real-time absorption power of the main pump to the recommended absorption power based on the calibration loading rate; obtaining the engine speed drop value, and determining whether the speed drop value is less than or equal to a preset speed drop threshold; when the speed drop value is greater than the preset speed drop threshold, updating the recommended absorption power of the main pump based on the acquired power correction amount, until the speed drop value is less than or equal to the preset speed drop threshold, and using the recommended absorption power as the calibration absorption power. By pre-calibrating the absorption power and the loading rate corresponding to the absorption power at different altitudes, the engineering machinery can directly use the pre-calibrated calibration absorption power and calibration loading rate in the actual high-altitude operation scene, so that the main pump absorption power of the engineering machinery can match the engine output power, avoid the speed drop and stall phenomenon of the engineering machinery, and enable the engineering machinery to adapt to the high-altitude operation scene.

[0090] Example 2

[0091] Figure 4 The following schematically shows a flow chart of a control method for an engineering machine according to an embodiment of the present application. Figure 4 As shown, an embodiment of the present application provides a control method for an engineering machine, the engineering machine includes a main pump and an engine, and the control method for the engineering machine includes:

[0092] S210, in response to receiving a high altitude operation request, obtaining a calibrated loading rate and a calibrated absorbed power at a current altitude, wherein the calibrated loading rate and the calibrated absorbed power are both determined according to the above-mentioned calibration method for the engineering machinery.

[0093] After completing the calibration of the engineering machinery, the engineering machinery stores the calibrated loading rate and calibrated absorption power at multiple altitudes. When the engineering machinery is in a high-altitude operation scenario, the engineering machinery responds to the received high-altitude operation request, obtains the current altitude, and then obtains the calibrated rate and calibrated absorption power at the current altitude. Since the calibrated loading rate and calibrated absorption power are determined according to the above-mentioned engineering machinery calibration method, in the actual operation scenario, there is no need to manually adjust the absorption power of the main pump repeatedly.

[0094] S220: Based on the calibrated loading rate, the real-time absorption power of the main pump is adjusted to the calibrated absorption power.

[0095] Based on the calibrated loading rate, the real-time absorption power of the main pump is adjusted to the calibrated absorption power. Since the engine responsiveness deteriorates in high-altitude scenarios, the calibrated loading rate is less than the initial loading rate, and the calibrated absorption power is less than the initial absorption power, the absorption power loading of the construction machinery in high-altitude scenarios is delayed. The absorption power and loading rate of the main pump are matched with the power of the engine, which suppresses the engine speed drop and avoids the phenomenon of the construction machinery being stuck.

[0096] In an embodiment of the present application, the control method of the engineering machinery further includes:

[0097] In response to receiving a low altitude operation request, obtaining an initial loading rate and an initial absorbed power of the construction machinery, wherein the initial loading rate is greater than a calibrated loading rate, and the initial absorbed power is greater than the calibrated absorbed power;

[0098] Based on the initial loading rate, the real-time absorbed power of the main pump is adjusted to the initial absorbed power.

[0099] When the construction machinery is in a low-altitude operation scenario, the construction machinery responds to the received low-altitude operation request and directly obtains the initial loading rate and initial absorption power of the construction machinery. Since the engine has better responsiveness in the low-altitude operation scenario than in the high-altitude operation scenario, the initial loading rate is greater than the calibrated loading rate, and the initial absorption power is greater than the calibrated absorption power. Based on the initial loading rate, the real-time absorption power of the main pump is adjusted to the initial absorption power, and then the absorption power of the main pump is restored to the initial absorption power in the low-altitude operation scenario.

[0100] The present application also provides a control device, including:

[0101] a memory configured to store instructions;

[0102] The processor is configured to call instructions from the memory and implement the calibration method of the engineering machinery or the control method of the engineering machinery when executing the instructions.

[0103] The processor includes a kernel, which retrieves the corresponding program unit from the memory. One or more kernels can be set, and the problem that the construction machinery is difficult to adapt to high-altitude working scenes in the prior art can be solved by adjusting the kernel parameters.

[0104] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM, and the memory includes at least one memory chip.

[0105] The present application also provides an engineering machine, including:

[0106] According to the control device described above;

[0107] an engine configured to drive a main pump;

[0108] The main pump is configured to pump hydraulic oil to drive the construction machinery.

[0109] In this embodiment, the engineering machinery also includes other devices, which are based on actual needs and are not limited here. For ease of understanding, in the embodiment of the present application, the other devices include a main valve, a pilot pump, a pilot valve, an operating device and a control mechanism. The pilot pump is connected to the operating device through the pilot valve and the main valve in turn. According to the user's operation of the control mechanism, the pilot valve is opened so that the pilot oil is delivered to the main valve to push the main valve to open.

[0110] After the main valve is opened, the main pump pumps the hydraulic oil through the main valve to the working device for engineering operations. For ease of understanding, the working device in the embodiment of the present application includes a working cylinder and a working motor. When the engineering machinery receives a power calibration request, the calibrated loading rate corresponding to the absorbed power at the current altitude is determined, and the calibrated absorbed power at the current altitude is determined. When the engineering machinery receives a high-altitude operation request, the calibrated loading rate and calibrated absorbed power at the current altitude are directly obtained, and based on the calibrated loading rate, the real-time absorbed power of the main pump is adjusted to the calibrated absorbed power. The calibrated loading rate is less than the initial loading rate, and the calibrated absorbed power is less than the initial absorbed power, so that the absorbed power loading of the engineering machinery in high-altitude scenarios is delayed. The absorbed power and loading rate of the main pump are matched with the power of the engine, which suppresses the engine speed drop, thereby avoiding the phenomenon of the engineering machinery holding up.

[0111] An embodiment of the present application also provides a machine-readable storage medium, on which instructions are stored, and the instructions are used to enable a machine to execute the calibration method of the engineering machinery or the control method of the engineering machinery described above.

[0112] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0113] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0114] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0115] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0116] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0117] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. The memory is an example of a computer-readable medium.

[0118] Computer readable media include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. Information can be computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include temporary computer readable media (transitory media), such as modulated data signals and carrier waves.

[0119] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0120] The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included within the scope of the claims of the present application.

Claims

1. A calibration method for construction machinery, characterized in that: The engineering machinery comprises a main pump and an engine, and the calibration method of the engineering machinery comprises: In response to the received power calibration request, determining a calibration loading rate corresponding to the absorbed power of the main pump at the current altitude; Determine the recommended absorption power of the main pump at the current altitude according to the atmospheric pressure and altitude coefficient corresponding to the current altitude; Based on the calibrated loading rate, adjusting the real-time absorbed power of the main pump to the recommended absorbed power; Obtaining a speed drop value of the engine, and determining whether the speed drop value is less than or equal to a preset speed drop threshold; When the speed drop value is greater than the preset speed drop threshold, the recommended absorption power of the main pump is updated based on the acquired power correction amount until the speed drop value is less than or equal to the preset speed drop threshold, and the corresponding recommended absorption power is used as the calibrated absorption power.

2. The calibration method for engineering machinery according to claim 1, characterized in that: The engineering machinery also includes an operating device; The obtaining of the engine speed drop value and determining whether the engine speed drop value is less than or equal to a preset speed drop threshold value includes: Controlling the working device to perform a target action and determining whether the load of the working device has reached a maximum value; When the load of the working device reaches a maximum value, a speed drop value of the engine is obtained, and it is determined whether the speed drop value is less than or equal to a preset speed drop threshold.

3. The calibration method for engineering machinery according to claim 1, characterized in that: The step of determining, in response to the received power calibration request, a calibration loading rate corresponding to the absorbed power of the main pump at the current altitude comprises: In response to the received power calibration request, based on the obtained rate correction, the current loading rate corresponding to the absorbed power of the main pump is updated until the speed drop value is less than or equal to the preset speed drop threshold, and the corresponding current loading rate is used as the calibrated loading rate at the current altitude.

4. The calibration method for engineering machinery according to claim 1, characterized in that: The calibrated loading rate includes a first rate and a second rate, wherein the second rate is greater than the first rate; The step of adjusting the real-time absorbed power of the main pump to the recommended absorbed power based on the calibrated loading rate comprises: When the real-time absorbed power of the engine is less than a preset absorbed power threshold, adjusting the real-time absorbed power of the engine based on the first rate, wherein the preset absorbed power threshold is less than the recommended absorbed power; When the real-time absorbed power of the engine is greater than or equal to the absorbed power threshold, the real-time absorbed power of the engine is adjusted based on the second rate until the real-time absorbed power of the engine is equal to the recommended absorbed power.

5. The calibration method for engineering machinery according to claim 1, characterized in that: The engineering machinery calibration method further includes: A display interface is generated according to the calibrated loading rate, the speed drop value and the calibrated absorbed power.

6. A control method for construction machinery, characterized in that: The control method of the engineering machinery comprises: In response to receiving a high altitude operation request, obtaining a calibrated loading rate and a calibrated absorbed power at a current altitude, wherein the calibrated loading rate and the calibrated absorbed power are both determined according to the calibration method for engineering machinery according to any one of claims 1 to 5; Based on the calibrated loading rate, the real-time absorbed power of the main pump is adjusted to the calibrated absorbed power.

7. The control method for construction machinery according to claim 6, characterized in that: The control method of the engineering machinery further comprises: In response to receiving a low altitude operation request, obtaining an initial loading rate and an initial absorbed power of the construction machinery, wherein the initial loading rate is greater than the calibrated loading rate, and the initial absorbed power is greater than the calibrated absorbed power; Based on the initial loading rate, the real-time absorption power of the main pump is adjusted to the initial absorption power.

8. A control device, characterized in that: include: a memory configured to store instructions; A processor is configured to call the instruction from the memory and to implement the calibration method of the engineering machinery according to any one of claims 1 to 5, or the control method of the engineering machinery according to any one of claims 6 to 7 when executing the instruction.

9. An engineering machine, characterized in that: include: A control device according to claim 8; an engine configured to drive the main pump; The main pump is configured to pump hydraulic oil to drive the engineering machine.

10. A machine-readable storage medium, characterized in that: The machine-readable storage medium stores instructions for causing the machine to execute the calibration method for an engineering machine according to any one of claims 1 to 5, or the control method for an engineering machine according to any one of claims 6 to 7.

Images