Fatigue driving control method for working machine and working machine

Abstract

The embodiment of the invention provides a fatigue driving control method for an operation machine and the operation machine, and belongs to the technical field of operation machines. The method comprises the following steps: acquiring a face image of a driver in real time; based on the face image, judging whether a fatigue driving behavior exists or not; if the fatigue driving behavior exists, dividing a fatigue driving grade based on the occurrence frequency or duration of the fatigue driving behavior; and selecting a preset control strategy based on the fatigue driving grade to control the operation machinery and give an alarm. The method is used for improving the safety of operation machine driving.

Description

Technical Field

[0001] This invention relates to the field of work machinery technology, and more specifically to a fatigue driving control method for work machinery and the work machinery itself. Background Technology

[0002] In modern engineering construction, excavators and other construction machinery are key engineering equipment, widely used in various complex and high-intensity work scenarios. Operators of these machines often work for extended periods, and the operating environments are typically dangerous, such as mountainous areas, mines, and construction sites. Therefore, if operators are fatigued, accidents are highly likely to occur.

[0003] However, existing technologies lack fatigue detection and safe driving control for operating machinery in specific working scenarios, making it difficult to ensure driving safety in such scenarios. Summary of the Invention

[0004] The purpose of this invention is to provide a fatigue driving control method and a working machine for improving the safety of driving the working machine.

[0005] To achieve the above objectives, in a first aspect, embodiments of the present invention provide a fatigue driving control method for operating machinery, the method comprising: real-time acquisition of a driver's facial image; determining, based on the facial image, whether fatigue driving behavior exists; if fatigue driving behavior exists, classifying fatigue driving levels based on the frequency or duration of the fatigue driving behavior; and selecting a preset control strategy based on the fatigue driving level to control the operating machinery and issue an alarm.

[0006] Optionally, classifying fatigue driving levels based on the frequency or duration of the fatigue driving behavior includes: classifying it as mild fatigue if the frequency of instantaneous fatigue driving behavior is greater than zero and less than a first frequency threshold, or the duration of continuous fatigue driving behavior is greater than zero and less than a first duration threshold; classifying it as moderate fatigue if the frequency of instantaneous fatigue driving behavior is greater than or equal to the first frequency threshold and less than a second frequency threshold, or the duration of continuous fatigue driving behavior is greater than or equal to the first duration threshold and less than the second duration threshold; and classifying it as severe fatigue if the frequency of instantaneous fatigue driving behavior is greater than or equal to the second frequency threshold, or the duration of continuous fatigue driving behavior is greater than or equal to the second duration threshold; wherein the first frequency threshold is less than the second frequency threshold, and the first duration threshold is less than the second duration threshold.

[0007] Optionally, classifying fatigue driving levels based on the frequency or duration of the fatigue driving behavior further includes: using the classification result obtained based on the frequency of the instantaneous fatigue driving behavior as the first level; using the classification result obtained based on the duration of the continuous fatigue driving behavior as the second level; and using the higher priority of the first level and the second level as the fatigue driving level, wherein the priority of mild fatigue, moderate fatigue and severe fatigue increases sequentially.

[0008] Optionally, selecting a preset control strategy based on the fatigue driving level to control the operating machinery and issue an alarm includes: when the fatigue driving level is mild fatigue, not limiting the pump flow of the operating machinery and issuing an alarm based on a first frequency; and when the fatigue driving level is moderate fatigue, reducing the engine speed to a first speed and / or reducing the pump displacement to a first displacement to reduce the pump flow and issuing an alarm based on a second frequency, wherein the first speed is greater than the idle speed value and the second frequency is greater than the first frequency.

[0009] Optionally, selecting a preset control strategy based on the fatigue driving level to control the operating machinery and issue an alarm includes: when the fatigue driving level is severe fatigue, stopping the operating machinery for a preset duration and issuing an alarm based on a third frequency.

[0010] Optionally, controlling the operating machinery and issuing an alarm based on a preset control strategy selected according to the fatigue driving level includes: when the fatigue driving level is severe fatigue, reducing the engine speed to a second speed and / or reducing the pump displacement to a second displacement to reduce the pump flow; reminding the driver to move the operating machinery to a pre-planned safe area and issuing an alarm based on a third frequency; and determining whether the operating machinery is located in the safe area, and if so, stopping the operating machinery for a preset time, wherein the second speed is less than or equal to the idle speed value.

[0011] Optionally, after selecting a preset control strategy based on the fatigue driving level to control the operating machinery and issue an alarm, the method further includes: determining whether fatigue driving behavior exists based on the driver's facial image; if the determination result is that fatigue driving behavior exists, then returning to the step of: classifying fatigue driving level based on the frequency or duration of the fatigue driving behavior; if the determination result is that fatigue driving behavior does not exist, then stopping the execution of the control strategy and the alarm.

[0012] Secondly, embodiments of the present invention provide a working machine, which is controlled based on any one of the methods described above.

[0013] Thirdly, embodiments of the present invention provide a machine-readable storage medium storing instructions that cause a machine to perform any of the methods described herein.

[0014] Fourthly, embodiments of the present invention provide a fatigue driving control device for operating machinery, the device comprising a memory and a processor, the processor being used to run a program, wherein the program, when run, is used to execute any of the methods described herein.

[0015] The above technical solution can determine in real time whether the driver is driving while fatigued and classify the level of fatigue. If the driver is not driving while fatigued, the system can promptly select the corresponding control strategy based on the level of fatigue to control the operation of the machinery and issue an alarm, thereby improving the safety of operating the machinery, ensuring the personal safety of the driver and passengers, and reducing potential economic losses.

[0016] Other features and advantages of the embodiments of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a flowchart illustrating the fatigue driving control method for operating machinery provided in an embodiment of the present invention. Figure 2 This is a schematic diagram of a fatigue driving control circuit for operating machinery provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of a fatigue driving control circuit for another type of work machinery provided in an embodiment of the present invention; Figure 4 This is a schematic diagram of the fatigue driving control process for operating machinery provided in an embodiment of the present invention; Figure 5 This is a schematic diagram of the device provided in an embodiment of the present invention.

[0018] Explanation of reference numerals in the attached figures 101 Processor 102 Memory 103 bus 10 devices Detailed Implementation The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of the present invention.

[0019] It should be noted that the acquisition, transmission, storage, use, and processing of data in the technical solution of this application all comply with relevant laws and regulations. In the embodiments of this application, certain existing industry solutions such as software, components, and models may be mentioned. These should be considered exemplary, intended only to illustrate the feasibility of implementing the technical solution of this application, and do not imply that the applicant has already used or necessarily used such solutions.

[0020] Figure 1 This is a flowchart illustrating a fatigue driving control method for work machinery provided in an embodiment of the present invention, as shown below. Figure 1 The method includes steps S1 to S4.

[0021] Step S1: Real-time acquisition of driver's facial images.

[0022] Step S2: Based on the facial image, determine whether there is fatigue driving behavior.

[0023] Step S3: If fatigued driving behavior exists, the fatigued driving level is determined based on the frequency or duration of the fatigued driving behavior.

[0024] Step S4: Based on the fatigue driving level, select a preset control strategy to control the operating machinery and issue an alarm.

[0025] The method proposed in this invention can determine in real time whether a driver is driving while fatigued and classify the level of fatigue. If the driver is not driving while fatigued, the system can promptly select the corresponding control strategy based on the fatigue level to control the operation of the machinery and issue an alarm, thereby improving the safety of operating the machinery, ensuring the personal safety of the driver and passengers, and reducing potential economic losses.

[0026] The method proposed in this invention can be implemented in conjunction with a DMS (Driver Monitor System), which includes a DMS camera and a DMS host. Figure 2 This is a schematic diagram of a fatigue driving control circuit for operating machinery provided in an embodiment of the present invention. Figure 3 This is a schematic diagram of a fatigue driving control circuit for another type of work machinery provided in an embodiment of the present invention. Figure 2 and Figure 3As shown, a DMS camera installed in front of the driver captures real-time images of the driver's face and transmits the images to the DMS host. Upon receiving the facial images, the DMS host compares them with existing data in its database using image detection technology to determine if the driver is fatigued, and uploads the result to the host controller. The host controller then matches a preset control strategy based on the determination result to control the machinery. A display shows the determination result and the operating status of the machinery for the driver's reference. The determination result can be as follows: Figure 2 As shown, data can be transmitted from the host controller to the display, or as follows: Figure 3 As shown, data is transmitted from the DMS host to the display.

[0027] Furthermore, classifying fatigue driving levels based on the frequency or duration of the fatigue driving behavior includes: if the frequency of instantaneous fatigue driving behavior is greater than zero and less than a first frequency threshold, or the duration of continuous fatigue driving behavior is greater than zero and less than a first duration threshold, then it is classified as mild fatigue; if the frequency of instantaneous fatigue driving behavior is greater than or equal to the first frequency threshold and less than a second frequency threshold, or the duration of continuous fatigue driving behavior is greater than or equal to the first duration threshold and less than the second duration threshold, then it is classified as moderate fatigue; and if the frequency of instantaneous fatigue driving behavior is greater than or equal to the second frequency threshold, or the duration of continuous fatigue driving behavior is greater than or equal to the second duration threshold, then it is classified as severe fatigue. Wherein, the first frequency threshold is less than the second frequency threshold, and the first duration threshold is less than the second duration threshold.

[0028] Transient fatigue driving behavior refers to behaviors that last for a short period of time, such as squinting or yawning, while sustained fatigue driving behavior refers to behaviors that last for a longer period of time, such as making a phone call, smoking, or intentionally obstructing the view. The specific behaviors mentioned above are for illustrative purposes only, and other behaviors may be included in the actual implementation. This invention does not limit the specific behaviors.

[0029] After classifying fatigue driving levels, different control strategies can be adopted according to different fatigue driving levels to more accurately control the operating status of the machinery.

[0030] Furthermore, classifying fatigue driving levels based on the frequency or duration of the fatigue driving behavior includes: using the classification result obtained based on the frequency of the instantaneous fatigue driving behavior as the first level; using the classification result obtained based on the duration of the continuous fatigue driving behavior as the second level; and using the higher priority level between the first and second levels as the fatigue driving level. The priority of mild fatigue, moderate fatigue, and severe fatigue increases sequentially.

[0031] It is understandable that fatigue driving levels determined by instantaneous fatigue behavior and continuous fatigue driving behavior may conflict. Therefore, this invention establishes a priority rule, with the priority of mild fatigue, moderate fatigue, and severe fatigue increasing sequentially. When the judgment results conflict, the higher priority level is used as the final fatigue driving level, thereby better ensuring operational safety.

[0032] Furthermore, the control strategy selected based on the fatigue driving level to control the operating machinery and issue an alarm includes: when the fatigue driving level is mild fatigue, not limiting the pump flow of the operating machinery and issuing an alarm based on a first frequency; and when the fatigue driving level is moderate fatigue, reducing the engine speed to a first speed and / or reducing the pump displacement to a first displacement to reduce the pump flow and issuing an alarm based on a second frequency, wherein the first speed is greater than the idle speed value and the second frequency is greater than the first frequency.

[0033] The formula for calculating pump flow rate is as follows: Q(s) = n × V p ×v, Where Q(s) is the pump flow rate, n is the engine speed, and V is the pump speed. p Where is the pump displacement and v is the volumetric efficiency.

[0034] According to the above calculation formula, when the engine speed or pump displacement decreases, the pump flow rate also decreases.

[0035] In practice, after receiving the driver fatigue level signal from the DMS host, the main controller sets the engine speed based on this signal. Lowering the engine speed directly reduces the pump speed, thereby reducing the pump flow rate. Similarly, after receiving the driver fatigue level signal from the DMS host, the main controller changes the current of the main pump proportional valve in the hydraulic system to reduce the pump displacement, which also reduces the pump flow rate. During adjustment, the engine speed can be reduced only, or the pump displacement can be reduced after lowering the engine speed.

[0036] It should be noted that for some operating machinery, such as excavators, each gear corresponds to an engine speed. Therefore, when adjusting the engine speed, the gear is actually adjusted by automatically downshifting to reduce the engine speed.

[0037] Furthermore, the method of controlling the operating machinery and issuing an alarm based on the preset control strategy selected according to the fatigue driving level includes: when the fatigue driving level is severe fatigue, stopping the operating machinery for a preset duration and issuing an alarm based on a third frequency, wherein the third frequency is greater than the second frequency.

[0038] The method proposed in this invention employs different control strategies for drivers with varying degrees of fatigue. For drivers in a moderately fatigued state, the pump flow rate can be reduced to limit driver operation and improve safety. For drivers in a severely fatigued state, their work is stopped to prevent accidents.

[0039] In some cases, although the driver is judged to be severely fatigued, the work area may pose a certain danger, necessitating the relocation of the machinery to a safe area before stopping operation. In some embodiments of the present invention, controlling the machinery and issuing an alarm based on a preset control strategy according to the driver's fatigue level includes: when the driver's fatigue level is severe fatigue, reducing the engine speed to a second speed and / or reducing the pump displacement to a second displacement to decrease pump flow; reminding the driver to move the machinery to a pre-planned safe area and issuing an alarm based on a third frequency; and determining whether the machinery is located in the safe area, and if so, stopping the machinery for a preset duration, wherein the second speed is less than or equal to the idle speed, the second displacement is less than the first displacement, and the third frequency is greater than the second frequency.

[0040] By first limiting the working efficiency of the machinery to ensure safe movement, including retracting the working device, traveling at low speed, and turning, the machinery is then slowly moved to a pre-planned safe area. Once the location of the machinery is determined to be within a safe area, it stops operating, thereby better ensuring the safety of personnel and engineering equipment.

[0041] Furthermore, after selecting a preset control strategy based on the fatigue driving level to control the operating machinery and issue an alarm, the method further includes: determining whether fatigue driving behavior exists based on the driver's facial image; if the determination result is that fatigue driving behavior exists, then returning to the step: classifying the fatigue driving level based on the frequency or duration of the fatigue driving behavior; if the determination result is that fatigue driving behavior does not exist, then stopping the execution of the control strategy.

[0042] Specifically, alarms may include sound and display prompts as auditory and visual cues, with the display prompts showing warning information on a monitor.

[0043] Furthermore, after selecting a preset control strategy based on the fatigue driving level to control the operating machinery and issue an alarm, the method further includes: determining whether fatigue driving behavior exists based on the driver's facial image; if the determination result is that fatigue driving behavior exists, then returning to the step of: classifying the fatigue driving level based on the frequency or duration of the fatigue driving behavior; if the determination result is that fatigue driving behavior does not exist, then stopping the execution of the control strategy and the alarm.

[0044] During the operation of the machinery, facial images of the driver are continuously collected to determine whether the driver is fatigued. This ensures timely safety control and allows the machinery to return to normal operation as soon as the driver recovers from fatigue.

[0045] Furthermore, the method also includes: sending the judgment result of fatigue driving and / or the operating status of the working machinery to a remote platform for recording and providing remote prompts. After the remote platform summarizes and records the received information, it can issue reminders to relevant personnel or systems remotely, thereby further improving driving safety.

[0046] Example 1: Figure 4 This is a schematic diagram of the fatigue driving control process for operating machinery provided in an embodiment of the present invention, such as... Figure 4 As shown, the process includes the following steps S201 to S208.

[0047] Step S201: DMS camera information collection, capturing real-time images of the driver's face.

[0048] Step S202: The DMS host receives the driver's facial image and determines whether the driver is driving while fatigued. If the determination result is that the driver is not driving while fatigued, then proceed to step S208. If the determination result is that the driver is driving while fatigued, then continue to determine the level of fatigue and proceed to step S203.

[0049] Step S203: The host controller determines the severity, that is, receives the fatigue driving level signal and matches the preset control strategy based on the fatigue driving level signal; if the fatigue driving level is mild fatigue, proceed to step S204; if the fatigue driving level is moderate fatigue, proceed to step S205; if the fatigue driving level is severe fatigue, proceed to step S206.

[0050] Step S204: Issue an alarm without restricting the operating status of the machinery. Specifically, a warning message can be displayed on the monitor at a first frequency to alert the driver. For example, the warning message may include a message indicating "mild fatigue," and may also include an audible alert.

[0051] Step S205: An alarm is triggered, and flow rate and speed are limited, resulting in a p% decrease in operating efficiency. Specifically, a warning message can be displayed on the monitor based on a second frequency. For example, the warning message may include a message indicating "moderate fatigue," and may also include an audible warning. Simultaneously, by reducing engine speed and / or pump displacement to limit pump flow rate, the operating efficiency of the machinery decreases by p%. It should be noted that this application does not limit the value of p%, and this value is only used to represent the effect of the adjustment on the decrease in operating efficiency.

[0052] Step S206: An alarm is triggered, and flow rate and speed are limited, resulting in a decrease in operating efficiency of q%. This ensures the machinery can move safely. Once within the safe zone, operation ceases for a time t. Specifically, a warning message can be displayed on the monitor at a third frequency. For example, the warning message may include the words "severe fatigue," and an audible alert may also be included. Simultaneously, by reducing engine speed and / or pump displacement to limit pump flow, the operating efficiency of the machinery decreases by q%. The time t can be adjusted according to actual conditions; for example, it can be set between half an hour and one hour.

[0053] Step S207: The DMS host continues to receive the driver's facial image and determines whether the driver is driving while fatigued. If the determination result is that the driver is not driving while fatigued, then proceed to step S208. If the determination result is that the driver is driving while fatigued, then continue to determine the level of fatigue and return to step S203.

[0054] Step S208: Deactivate the alarm and stop executing the control policy.

[0055] It should be noted that throughout the above steps, the DMS system remains in real-time monitoring until the alarm is finally cleared and the machinery resumes normal operation.

[0056] The method proposed in this invention is based on a fatigue monitoring system that monitors the driver's facial expressions in real time, identifies whether the driver is fatigued, issues an alarm in a timely manner, and autonomously restricts the movement of the operating machinery, thereby ensuring the safety of personnel and engineering equipment.

[0057] This solution monitors the driver's fatigue state through facial expression recognition. The main controller receives personnel status data from CAN bus messages sent by the fatigue prevention system, selects an operational control strategy corresponding to the severity of the message, and then limits the machine's operation by reducing engine speed and pump displacement. Alternatively, data can be transmitted wirelessly, or personnel status data can be acquired through a controller or display with integrated fatigue monitoring data acquisition capabilities to control the engine and pump / valve outputs.

[0058] This invention also provides a working machine, which is controlled based on any of the methods described above.

[0059] This invention also provides a machine-readable storage medium storing instructions that cause a machine to perform any of the methods described herein.

[0060] This invention also provides a fatigue driving control device for operating machinery, for example, such as... Figure 5As shown, the device includes a memory and a processor, the processor being used to run a program, wherein the program, when run, is used to execute the fatigue driving control method for the work machinery.

[0061] The processor contains a kernel, which retrieves the corresponding program unit from memory. One or more kernels can be configured, and the fatigue driving control method for the operating machinery can be executed by adjusting the kernel parameters.

[0062] The memory may include non-permanent memory in computer-readable media, such as 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.

[0063] This application also provides a computer program product that, when executed on a data processing device, is adapted to perform a program for initializing any of the methods described herein.

[0064] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can 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, etc.) containing computer-usable program code.

[0065] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0066] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0067] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0068] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0069] Memory may include non-persistent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. Memory is an example of computer-readable media.

[0070] Computer-readable media includes both permanent and non-permanent, removable and non-removable media that can store information using any method or technology. Information can be computer-readable instructions, data structures, modules of programs, 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 technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transient computer-readable media, such as modulated data signals and carrier waves.

[0071] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0072] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A fatigue driving control method for a work machine, characterized by, The method comprises: collecting a driver's face image in real time; judging whether there is a fatigue driving behavior based on the face image; if there is a fatigue driving behavior, dividing a fatigue driving level based on a frequency or a duration of the fatigue driving behavior; and selecting a preset control strategy based on the fatigue driving level to control the working machine and giving an alarm.

2. The method of claim 1, wherein, The fatigue driving level is divided based on the frequency or the duration of the fatigue driving behavior, which comprises: if the frequency of the instantaneous fatigue driving behavior is greater than zero and less than a first frequency threshold, or the duration of the persistent fatigue driving behavior is greater than zero and less than a first duration threshold, the fatigue driving level is divided as mild fatigue; if the frequency of the instantaneous fatigue driving behavior is greater than or equal to the first frequency threshold and less than a second frequency threshold, or the duration of the persistent fatigue driving behavior is greater than or equal to the first duration threshold and less than a second duration threshold, the fatigue driving level is divided as moderate fatigue; and if the frequency of the instantaneous fatigue driving behavior is greater than or equal to the second frequency threshold, or the duration of the persistent fatigue driving behavior is greater than or equal to the second duration threshold, the fatigue driving level is divided as severe fatigue; wherein the first frequency threshold is less than the second frequency threshold, and the first duration threshold is less than the second duration threshold.

3. The method of claim 2, wherein, The fatigue driving level is divided based on the frequency or the duration of the fatigue driving behavior, which further comprises: taking the division result based on the frequency of the instantaneous fatigue driving behavior as a first level; taking the division result based on the duration of the persistent fatigue driving behavior as a second level; and taking the level with higher priority in the first level and the second level as the fatigue driving level, wherein the priority of the mild fatigue, the moderate fatigue and the severe fatigue increases in turn.

4. The method of claim 1, wherein, The fatigue driving level is selected to control the working machine and give an alarm based on the preset control strategy, which comprises: when the fatigue driving level is mild fatigue, the pump flow of the working machine is not limited, and an alarm is given based on a first frequency; and when the fatigue driving level is moderate fatigue, the engine speed is reduced to a first speed, and / or the pump displacement is reduced to a first displacement, so as to reduce the pump flow, and an alarm is given based on a second frequency, wherein the first speed is greater than an idle speed, and the second frequency is greater than the first frequency.

5. The method of claim 1, wherein, The fatigue driving level is selected to control the working machine and give an alarm based on the preset control strategy, which comprises: when the fatigue driving level is severe fatigue, the working machine is stopped for a preset duration, and an alarm is given based on a third frequency.

6. The method of claim 1, wherein, The fatigue driving level is selected to control the working machine and give an alarm based on the preset control strategy, which comprises: when the fatigue driving level is severe fatigue, the engine speed is reduced to a second speed, and / or the pump displacement is reduced to a second displacement, so as to reduce the pump flow; the driver is reminded to move the working machine to a pre-planned safe area, and an alarm is given based on a third frequency; and it is judged whether the working machine is in the safe area, if yes, the working machine is stopped for a preset duration. The second rotating speed is less than or equal to an idle speed value.

7. The method of claim 1, wherein, The method further comprises: determining whether there is a fatigue driving behavior based on the face image of the driver; if the determination result is that there is a fatigue driving behavior, returning to the step of dividing the fatigue driving level based on the frequency or duration of the fatigue driving behavior; if the determination result is that there is no fatigue driving behavior, stopping the control strategy and the alarm.

8. A work machine characterized by, The working machine is controlled based on the method of any one of claims 1-7. 9.A machine readable storage medium having stored thereon instructions for causing a machine to perform the method of any one of claims 1-7.

10. A fatigue driving control device for a work machine, the device comprising a memory and a processor, characterized by, The processor is configured to run a program, wherein the program is configured to perform the method of any one of claims 1-7 when the program is run.

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