Warning methods and devices for low-speed starting of electric excavators

Abstract

This invention discloses a warning method and device for low-speed start-up of electric excavators. The method includes: when the electric excavator is operating at low speed, detecting the presence of at least one target object that meets preset alarm conditions using sensing and radar devices; when at least one target object meeting the preset alarm conditions is detected, acquiring the current working status information of the electric excavator, and outputting a simulated sound matching the current working status information to the target object, which is used to warn the target object to move away from the working range of the electric excavator. Therefore, implementing this invention can improve the warning effect of the electric excavator when it is in operation and the flexibility of warnings in different operating scenarios, effectively avoiding driver misoperation, and reminding pedestrians, vehicles, and other objects to avoid the area, thereby improving the safety of electric excavator operation.

Description

Technical Field

[0001] This invention relates to the field of excavator technology, and in particular to a warning method and device for low-speed starting of an electric excavator. Background Technology

[0002] In existing technologies, the warning systems of electric excavators only detect the current operating status signal of the excavator to control the sound-emitting unit, without considering the presence of pedestrians in the surrounding area to jointly control the activation of the sound-emitting mechanism. This increases unnecessary environmental noise and reduces driving comfort. Furthermore, it fails to consider multi-scenario applications, primarily focusing on urban road driving environments. Electric excavators can operate in urban areas and remote mining environments, and the lack of a warning system activation mode selection for different application scenarios results in poor intelligent interactivity.

[0003] Therefore, a warning method and device for low-speed start of electric excavators are provided, which can improve the warning effect when the electric excavator is in operation and the warning flexibility in different operation scenarios. It can effectively remind the driver that the vehicle has entered the start mode, avoid misoperation of commands, and remind pedestrians, vehicles and other objects to pay attention and avoid the vehicle, thereby improving the safety of electric excavator use. Summary of the Invention

[0004] This invention provides a method and device for warning electric excavators during low-speed startup, which can effectively prevent driver misoperation and remind pedestrians, vehicles and other objects to pay attention and avoid the area, thereby improving the warning flexibility and safety of electric excavators.

[0005] To address the aforementioned technical problems, the first aspect of this invention discloses a warning method for low-speed starting of an electric excavator, the method comprising:

[0006] When the electric excavator is operating at low speed, the electric excavator uses sensing and radar devices to detect whether there is at least one target object that meets the preset alarm conditions.

[0007] When at least one target object that meets the preset alarm conditions is detected, the electric excavator acquires the current working status information of the electric excavator and outputs a simulated sound that matches the current working status information to the target object. The simulated sound is used to warn the target object to move away from the working range of the electric excavator.

[0008] As an optional implementation, in a first aspect of the present invention, the sensing device includes: a camera device and a ranging device, wherein the camera device is used to identify an image of the target object, and the ranging device is used to measure the distance between the target object and the electric excavator;

[0009] The target objects that meet the preset alarm conditions include:

[0010] Personnel whose distance from the electric excavator is less than a preset distance threshold, motor vehicles and / or non-motor vehicles whose distance from the electric excavator is less than a preset distance threshold, and animals whose distance from the electric excavator is less than a preset distance threshold.

[0011] As an optional implementation, in a first aspect of the invention, after outputting an analog sound matching the current working state information to the target object, the method further includes:

[0012] Determine the number of target objects and determine whether the number of target objects is greater than or equal to a preset number threshold.

[0013] When it is determined that the number of target objects is greater than or equal to a preset first quantity threshold, the volume of the simulated sound is increased to a preset first volume threshold according to the first quantity threshold; or,

[0014] Determine whether the number of the target objects is less than or equal to a preset quantity threshold;

[0015] When it is determined that the number of the target objects is less than or equal to a preset second quantity threshold, the volume of the simulated sound is reduced to a preset second volume threshold according to the second quantity threshold.

[0016] As an optional implementation, in the first aspect of the present invention, the working status information includes at least one of the following: the current travel speed of the electric excavator and the working gear.

[0017] The step of outputting a simulated sound matching the current working status information to the target object based on the working status information includes:

[0018] Determine whether the driving speed is within a preset first speed threshold range;

[0019] When it is determined that the driving speed is within the preset first speed threshold range, the electric excavator is determined to be in an idle start state, and an engine start sound matching the current idle start state is output to the target object;

[0020] Determine whether the driving speed is within a preset second speed threshold range;

[0021] When it is determined that the travel speed is within a preset second speed threshold range, the electric excavator is determined to be in a road travel state, and outputs an engine operating sound consistent with the current road travel state to the target object; or,

[0022] When the working gear is determined to be the preset first gear, the electric excavator is determined to be in the digging working state, and the digging working sound that matches the current digging working state is output to the target object;

[0023] When the working gear is determined to be the preset second gear, the electric excavator is determined to be in the crushing working state, and the excavation operation sound that matches the current road driving state is output to the target object.

[0024] As an optional implementation, in the first aspect of the present invention, the method further includes:

[0025] When the electric excavator is in the idle start state, the camera device detects whether there is a driver in the operator's cab inside the electric excavator.

[0026] When a driver is detected in the cab of the electric excavator, the current working status information of the electric excavator is obtained, and it is determined whether the working status information has changed:

[0027] When a change in the working status information is detected, an engine start sound matching the idle start state is output to the driver to remind the driver that the electric excavator has started working.

[0028] When it is detected that there is no driver in the cab of the electric excavator, determine whether the control panel inside the cab is locked;

[0029] When it is determined that the control panel in the cab is not locked, a warning voice message is output to the outside world indicating that the electric excavator has been started and the control panel is not locked, so as to remind the operator to return to the electric excavator as soon as possible to operate it.

[0030] As an optional implementation, in the first aspect of the present invention, the method further includes:

[0031] The sensor device is used to detect the ambient noise intensity outside the electric excavator.

[0032] Determine whether the ambient noise intensity is greater than or equal to a preset first noise intensity threshold;

[0033] When the ambient noise intensity is determined to be greater than or equal to a preset first noise intensity threshold, the volume of the simulated sound is increased to a preset first volume threshold according to the first noise intensity threshold; or...

[0034] Determine whether the ambient noise intensity is less than or equal to a preset second noise intensity threshold;

[0035] When it is determined that the ambient noise intensity is less than or equal to a preset second noise intensity threshold, the volume of the simulated sound is reduced to a preset second volume threshold according to the second noise intensity threshold.

[0036] As an optional implementation, in the first aspect of the present invention, the sensing device detects whether the external environment of the electric excavator matches a preset environmental scenario;

[0037] When the external environment of the electric excavator is detected to match the preset environmental scenario, the warning mode of the electric excavator is adjusted according to the type and volume of the simulated sound that matches the preset environmental scenario.

[0038] The warning information in the warning mode includes the type and volume of the simulated sound used to warn the target object.

[0039] A second aspect of the present invention discloses a warning device for low-speed starting of an electric excavator, the device comprising:

[0040] The detection module is used to detect, through sensing and radar devices, whether there is at least one target object that meets the preset alarm conditions when the electric excavator is working at low speed.

[0041] The acquisition module is used to acquire the current working status information of the electric excavator when the detection module detects that there is at least one target object that meets the preset alarm conditions;

[0042] The output module is used to output a simulated sound that matches the current working status information to the target object based on the working status information obtained by the acquisition module. The simulated sound is used to warn the target object to move away from the working range of the electric excavator.

[0043] As an optional implementation, in a second aspect of the present invention, the sensing device includes at least: a camera device and a ranging device, wherein the camera device is used to identify an image of the target object, and the ranging device is used to measure the distance between the target object and the electric excavator;

[0044] The target objects that meet the preset alarm conditions include:

[0045] Personnel whose distance from the electric excavator is less than a preset distance threshold, motor vehicles and / or non-motor vehicles whose distance from the electric excavator is less than a preset distance threshold, and animals whose distance from the electric excavator is less than a preset distance threshold.

[0046] As an optional implementation, in a second aspect of the invention, the apparatus further includes:

[0047] The detection module is further configured to determine the number of target objects after the output module outputs a simulated sound that matches the current working status information to the target object;

[0048] The judgment module is used to determine whether the number of target objects determined by the detection module is greater than or equal to a preset number threshold, or to determine whether the number of target objects is less than or equal to a preset number threshold;

[0049] The volume adjustment module, when the judgment module determines that the number of target objects is greater than or equal to a preset first quantity threshold, increases the volume of the simulated sound to a preset first volume threshold according to the first quantity threshold; or, when the judgment module determines that the number of target objects is less than or equal to a preset second quantity threshold, decreases the volume of the simulated sound to a preset second volume threshold according to the second quantity threshold.

[0050] As an optional implementation, in a second aspect of the present invention, the working status information includes at least one of the following: the current travel speed of the electric excavator and the working gear.

[0051] The specific method by which the output module outputs an analog sound matching the current working status information to the target object based on the working status information is as follows:

[0052] Determine whether the driving speed is within a preset first speed threshold range;

[0053] When it is determined that the driving speed is within the preset first speed threshold range, the electric excavator is determined to be in an idle start state, and an engine start sound matching the current idle start state is output to the target object;

[0054] Determine whether the driving speed is within a preset second speed threshold range;

[0055] When it is determined that the travel speed is within a preset second speed threshold range, the electric excavator is determined to be in a road travel state, and outputs an engine operating sound consistent with the current road travel state to the target object; or,

[0056] When the working gear is determined to be the preset first gear, the electric excavator is determined to be in the digging working state, and the digging working sound that matches the current digging working state is output to the target object;

[0057] When the working gear is determined to be the preset second gear, the electric excavator is determined to be in the crushing working state, and the excavation operation sound that matches the current road driving state is output to the target object.

[0058] As an optional implementation, in a second aspect of the invention, the detection module is further configured to detect, via a camera device, whether there is a driver in the operator's cab inside the electric excavator when the electric excavator is in the idling start state.

[0059] The acquisition module is also used to acquire the current working status information of the electric excavator when the detection module detects that there is a driver in the cab inside the electric excavator;

[0060] The judgment module is also used to determine whether the working status information obtained by the acquisition module has changed, and / or, when the detection module detects that there is no driver in the cab inside the electric excavator, determine whether the control panel in the cab has been locked;

[0061] The output module is also used to output an engine start sound matching the idle start state to the driver when the judgment module determines that the working status information has changed, so as to remind the driver that the electric excavator has started working, and / or, when it is determined that the control panel in the cab is not locked, output a warning voice to the outside of the electric excavator that the electric excavator has started and the control panel is not locked, so as to remind the driver to return to the electric excavator as soon as possible to operate it.

[0062] As an optional implementation, in a second aspect of the invention, the detection module is further configured to detect the ambient noise intensity outside the electric excavator via the sensing device;

[0063] The judgment module is further configured to determine whether the ambient noise intensity detected by the detection module is greater than or equal to a preset first noise intensity threshold, or to determine whether the ambient noise intensity is less than or equal to a preset second noise intensity threshold.

[0064] The volume adjustment module is further configured to, when the judgment module determines that the ambient noise intensity is greater than or equal to a preset first noise intensity threshold, increase the volume of the simulated sound to a preset first volume threshold according to the first noise intensity threshold, or, when the judgment module determines that the ambient noise intensity is less than or equal to a preset second noise intensity threshold, decrease the volume of the simulated sound to a preset second volume threshold according to the second noise intensity threshold.

[0065] As an optional implementation, in a second aspect of the invention, the apparatus further includes:

[0066] The detection module is also used to detect whether the external environment of the electric excavator matches the preset environmental scenario through the sensing device;

[0067] The adjustment module is used to adjust the warning mode of the electric excavator according to the type and volume of the simulated sound that matches the preset environmental scene when the detection module detects that the external environment of the electric excavator matches the preset environmental scene.

[0068] The warning information in the warning mode includes the type and volume of the simulated sound used to warn the target object.

[0069] A third aspect of the present invention discloses another warning device for low-speed starting of an electric excavator, the device comprising:

[0070] Memory containing executable program code;

[0071] A processor coupled to the memory;

[0072] The processor calls the executable program code stored in the memory to execute the warning method for low-speed start-up of electric excavators disclosed in the first aspect of the present invention.

[0073] The fourth aspect of the present invention discloses a computer storage medium storing computer instructions, which, when invoked, are used to execute the warning method for low-speed start-up of an electric excavator disclosed in the first aspect of the present invention.

[0074] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0075] This invention provides a warning method and device for low-speed start-up of electric excavators. The method includes: when the electric excavator is operating at low speed, detecting the presence of at least one target object that meets preset alarm conditions using sensing and radar devices, which improves warning accuracy; when at least one target object meeting the preset alarm conditions is detected, acquiring the current working status information of the electric excavator, and outputting a simulated sound matching the current working status information to the target object. The simulated sound is used to warn the target object to move away from the working range of the electric excavator, improving the warning effect when the electric excavator is in operation and the warning flexibility in different operating scenarios. Therefore, implementing this invention can effectively avoid driver error and remind pedestrians, vehicles, and other objects to avoid the excavator, thereby improving the warning flexibility and operational safety of electric excavators. Attached Figure Description

[0076] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0077] Figure 1 This is a flowchart illustrating a warning method for low-speed starting of an electric excavator, as disclosed in an embodiment of the present invention.

[0078] Figure 2 This is a flowchart illustrating another warning method for low-speed starting of an electric excavator, as disclosed in an embodiment of the present invention.

[0079] Figure 3 This is a schematic diagram of the structure of a warning device for low-speed starting of an electric excavator, as disclosed in an embodiment of the present invention.

[0080] Figure 4 This is a schematic diagram of another warning device for low-speed starting of an electric excavator disclosed in an embodiment of the present invention;

[0081] Figure 5 This is a schematic diagram of another warning device for low-speed starting of an electric excavator disclosed in an embodiment of the present invention;

[0082] Figure 6 This is a schematic diagram of a warning system for low-speed starting of an electric excavator, as disclosed in an embodiment of the present invention. Detailed Implementation

[0083] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0084] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this invention are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, apparatus, product, or end that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or ends.

[0085] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0086] This invention discloses a warning method and device for low-speed start-up of electric excavators. When the electric excavator is operating at low speed, it can detect the presence of at least one target object that meets preset alarm conditions using sensors and radar, thus improving warning accuracy. When at least one target object meeting the preset alarm conditions is detected, the current working status information of the electric excavator is acquired, and a simulated sound matching the current working status information is output to the target object. The simulated sound is used to warn the target object to move away from the working range of the electric excavator. This improves the warning effect when the electric excavator is in operation and the warning flexibility in different operating scenarios, effectively avoiding driver misoperation and reminding pedestrians, vehicles, and other objects to avoid the area, thereby improving the warning flexibility and operational safety of the electric excavator. Detailed descriptions follow.

[0087] Example 1

[0088] Please see Figure 1 , Figure 1 This is a flowchart illustrating a warning method for low-speed starting of an electric excavator, as disclosed in an embodiment of the present invention. Figure 1 The described warning method for low-speed start of an electric excavator can be applied to a low-speed start warning device for an electric excavator. This device can be used in a low-speed start warning system for an electric excavator; the embodiments of this invention are not limited thereto. Optionally, such as... Figure 6 As shown, the system may include at least: a display screen for displaying control signals, a control module (alarm device) for an alarm system, a generating unit for emitting simulated sounds, and sensing devices (camera equipment, radar equipment, etc.). This embodiment of the invention does not impose limitations. Figure 1 As shown, the warning method applied to low-speed start-up of electric excavators may include the following operations:

[0089] 101. When the electric excavator is working at low speed, the sensor device detects whether there is at least one target object that meets the preset alarm conditions.

[0090] In this embodiment of the invention, the sensing device may optionally include at least: a camera (surveillance camera), a ranging device (LiDAR, ultrasonic radar, infrared rangefinder, etc.), a radio receiver, etc. The camera is used to identify the image of the target object through a deep neural network algorithm, and the ranging device is used to measure the distance between the target object and the electric excavator. The target object that meets the preset alarm conditions may include: personnel whose distance from the electric excavator is less than a preset distance threshold (e.g., 10 meters), motor vehicles and / or non-motor vehicles (buses, trucks, engineering vehicles, special vehicles, bicycles, tricycles, etc.) whose distance from the electric excavator is less than a preset distance threshold (e.g., 20 meters), and animals (e.g., livestock, pets, birds, etc.) whose distance from the electric excavator is less than a preset distance threshold (e.g., 10 meters). This embodiment of the invention does not limit the scope of the invention.

[0091] By using sensors to detect the presence of various types of target objects that meet preset alarm conditions, the accuracy of warnings can be improved. This enhances the warning effect when the electric excavator is in operation and increases the flexibility of warnings in different operating scenarios, reminding pedestrians, vehicles, and other objects to avoid the area and improving the safety of using the electric excavator.

[0092] 102. When at least one target object that meets the preset alarm conditions is detected, obtain the current working status information of the electric excavator.

[0093] In embodiments of the present invention, optionally, such as Figure 6 As shown, the warning device can obtain the working status signal output by the electric excavator through the electric excavator, and obtain working status information through the working status signal. The working status information may include at least one of the following: the current driving speed of the electric excavator, the working gear, etc., which are not limited in this embodiment of the invention.

[0094] By acquiring information about the current working status of the electric excavator, the accuracy of warnings can be improved, thereby enhancing the warning effect when the electric excavator is in operation and the flexibility of warnings in different operating scenarios.

[0095] 103. Output simulated sound that matches the current working status information to the target object based on the working status information.

[0096] In an embodiment of the invention, optionally, simulated sound is used to warn the target object to move away from the working range of the electric excavator.

[0097] In this embodiment of the invention, outputting a simulated sound matching the current working status information to the target object based on the working status information may include:

[0098] Determine whether the driving speed is within a preset first speed threshold range, for example: the speed range is (0km / h, 15km / h).

[0099] When it is determined that the driving speed is within the preset first speed threshold range, the electric excavator is in the idle start state, and an engine start sound matching the current idle start state is output to the target object.

[0100] Determine whether the driving speed is within a preset second speed threshold range, for example: the speed range is greater than or equal to 20km / h.

[0101] When the driving speed is determined to be within the preset second speed threshold range, the electric excavator is confirmed to be in road driving mode, and the engine operating sound corresponding to the current road driving state is output to the target object. Alternatively,

[0102] When the working gear is set to the preset first gear, the electric excavator is confirmed to be in digging working state, and digging operation sounds that match the current digging operation state are output to the target object.

[0103] When the working gear is set to the preset second gear, the electric excavator is confirmed to be in the crushing working state, and excavation operation sound matching the current road driving state is output to the target object.

[0104] By outputting multiple simulated sounds that match the current working status information of the electric excavator to the target object according to different working status information, the accuracy of the warning can be improved. This is conducive to improving the warning effect when the electric excavator is in operation and the warning flexibility in different working scenarios, reminding pedestrians, vehicles and other objects to pay attention and avoid the area, and improving the safety of using the electric excavator.

[0105] In an embodiment of the present invention, optionally, when the electric excavator is in an idling start state, the method may further include the following operations:

[0106] The camera equipment is used to detect whether there is a driver in the operator's cab inside the electric excavator.

[0107] When a driver is detected in the cab of the electric excavator, the current working status information of the electric excavator is obtained, and it is determined whether the working status information has changed.

[0108] When a change in working status information is detected, an engine start sound matching the idle start state is output to the driver to remind the driver that the electric excavator has started working.

[0109] When it is detected that there is no operator in the cab of the electric excavator, determine whether the control panel inside the cab is locked.

[0110] When it is determined that the control panel in the cab is not locked, a warning voice message is output to the outside of the electric excavator indicating that the electric excavator has been started and the control panel is not locked, so as to remind the operator to return to the electric excavator as soon as possible.

[0111] By using video equipment to detect whether there is a driver in the operator's cab of the electric excavator, the operator can be alerted that the excavator has started working or that a driver who has left the cab has not locked the excavator. This improves the warning effect when the electric excavator is in operation and the flexibility of warning in different working scenarios, effectively avoiding driver misoperation and thus improving the safety of using electric excavators.

[0112] In an optional embodiment, after performing step 104, the method further includes the following operations:

[0113] Determine the number of target objects and check whether the number of target objects is greater than or equal to a preset quantity threshold.

[0114] In this optional embodiment, the preset quantity threshold can be intelligently adjusted according to the type and size of the target object. When the target object is a pedestrian, the preset quantity threshold can be 10; when the target object is a small motor vehicle and / or non-motor vehicle, the preset quantity threshold can be 10; when the target object is a medium-sized motor vehicle, the preset quantity threshold can be 5; when the target object is a medium-sized motor vehicle, the preset quantity threshold can be 20; when the target object is a large motor vehicle, the preset quantity threshold can be 1; when the target object is livestock, the preset quantity threshold can be 10; when the target object is birds, the preset quantity threshold can be 20. This invention does not impose any limitations.

[0115] When the number of target objects is determined to be greater than or equal to a preset first quantity threshold, the volume of the simulated sound is increased to a preset first volume threshold (e.g., 60 decibels). Alternatively,

[0116] Determine whether the number of target objects is less than or equal to a preset quantity threshold.

[0117] When the number of target objects is determined to be less than or equal to a preset second quantity threshold, the volume of the simulated sound is reduced to a preset second volume threshold (e.g., 40 decibels) based on the second quantity threshold.

[0118] In this optional embodiment, preferably, a sensing device can also be used to identify whether a person is hearing-impaired or visually impaired. When a person is identified as hearing-impaired, a warning light or text warning is displayed on the electric excavator. When a person is identified as visually impaired, the volume of the simulated sound is increased to a preset third volume threshold (e.g., 80 decibels).

[0119] As can be seen, this optional embodiment can intelligently adjust the output volume of the simulated sound according to the type and quantity of the target object, which can improve the warning effect when the electric excavator is in operation and the warning flexibility in different operation scenarios, effectively reminding pedestrians, vehicles and other objects to pay attention and avoid them, thereby improving the safety of using the electric excavator and ensuring the safety of others.

[0120] Example 2

[0121] Please see Figure 2 , Figure 2 This is a flowchart illustrating a warning method for low-speed starting of an electric excavator, as disclosed in an embodiment of the present invention. Figure 2 The described warning method for low-speed start of electric excavators can be applied to a warning device for low-speed start of electric excavators, and this device can be applied to a warning system for low-speed start of electric excavators. This embodiment of the invention is not limited in its scope. Optionally, the system may at least include: a display screen for displaying control signals, a control module (warning device) for the warning system, a generating unit for emitting simulated sounds, and sensing devices (camera equipment, radar equipment, etc.). This embodiment of the invention is not limited in its scope. Figure 2 As shown, the warning method applied to low-speed start-up of electric excavators may include the following operations:

[0122] 201. When the electric excavator is working at low speed, the sensor device detects whether there is at least one target object that meets the preset alarm conditions.

[0123] 202. When at least one target object that meets the preset alarm conditions is detected, obtain the current working status information of the electric excavator.

[0124] 203. Output simulated sound that matches the current working status information to the target object based on the working status information.

[0125] 204. Use sensors to detect whether the external environment of the electric excavator matches the preset environmental scenario.

[0126] In this embodiment of the invention, the preset environmental scenario may include one of the following: urban road construction area, mining area, earthwork project area, port and dock area, agricultural planting area, etc. For example, when the environmental scenario is urban road construction or mining area, due to the large external environmental noise, the volume and frequency of the simulated sound can be appropriately increased in order to improve the warning effect on the target object.

[0127] 205. When the external environment of the electric excavator is detected to match the preset environmental scenario, the warning information in the current warning mode of the electric excavator is adjusted according to the type and volume of the simulated sound that matches the preset environmental scenario.

[0128] In this embodiment of the invention, optionally, the warning information of the warning mode includes the type and volume of the simulated sound used to warn the target object. Further optionally, the operator of the electric excavator can manually switch the warning mode according to different external environmental scenarios through the scene selection options provided on the control panel and display screen inside the electric excavator.

[0129] In an optional embodiment, after performing step 205, the method further includes the following operations:

[0130] The intensity of ambient noise outside the electric excavator is detected by sensing equipment.

[0131] Determine whether the ambient noise intensity is greater than or equal to a preset first noise intensity threshold (e.g., greater than or equal to 80 decibels).

[0132] When the ambient noise intensity is determined to be greater than or equal to a preset first noise intensity threshold, the volume of the simulated sound is increased to the preset first volume threshold based on the first noise intensity threshold. Alternatively,

[0133] Determine whether the ambient noise intensity is less than or equal to a preset second noise intensity threshold (e.g., less than or equal to 40 dB).

[0134] When the ambient noise intensity is determined to be less than or equal to a preset second noise intensity threshold, the volume of the simulated sound is reduced to a preset second volume threshold according to the second noise intensity threshold.

[0135] As can be seen, this optional embodiment can intelligently adjust the output type and volume of the simulated sound according to the ambient noise intensity outside the electric excavator. This can improve the warning effect when the electric excavator is in operation and the warning flexibility in different operating scenarios, effectively reminding pedestrians, vehicles and other objects to pay attention and avoid the area, thereby improving the safety of the electric excavator and ensuring the safety of others.

[0136] In this embodiment of the invention, for other descriptions of steps 201-203, please refer to the detailed description of steps 101-103 in Embodiment 1. This embodiment of the invention will not repeat them.

[0137] As can be seen, implementing the embodiments of the present invention can intelligently adjust the output type and volume of the simulated sound according to different external environments of the electric excavator, which can improve the warning effect when the electric excavator is in operation and the warning flexibility in different operating scenarios, effectively reminding pedestrians, vehicles and other objects to pay attention and avoid them, thereby improving the safety of the electric excavator and ensuring the safety of others.

[0138] It is evident that implementation is as follows Figure 2 The described warning method for low-speed start-up of electric excavators can detect the presence of at least one target object that meets preset alarm conditions when the electric excavator is operating at low speed, thus improving the accuracy of the warning. When at least one target object that meets the preset alarm conditions is detected, the current working status information of the electric excavator is obtained, and a simulated sound matching the current working status information is output to the target object. The simulated sound can be used to warn the target object to move away from the working range of the electric excavator, and the output type and volume of the simulated sound can be intelligently adjusted according to different external environments of the electric excavator. This improves the warning effect when the electric excavator is in operation and the warning flexibility in different working scenarios, effectively avoiding driver misoperation and reminding pedestrians, vehicles, and other objects to pay attention and avoid the area, thereby improving the safety of the electric excavator and ensuring the safety of others.

[0139] Example 3

[0140] Please see Figure 3 , Figure 3 This is a schematic diagram of a warning device for low-speed starting of an electric excavator, as disclosed in an embodiment of the present invention. Figure 3 The described warning device for low-speed start of an electric excavator can perform the functions described above. This device can be applied to a warning system for low-speed start of an electric excavator, and this embodiment of the invention is not limited thereto. Optionally, the system may at least include: a display screen for displaying control signals, a control module (warning device) for the warning system, a generating unit for emitting simulated sounds, and sensing devices (camera equipment, radar equipment, etc.), and this embodiment of the invention is not limited thereto. Figure 3 As shown, the warning device applied to the low-speed start of an electric excavator may include a detection module 301, an acquisition module 302, and an output module 303, wherein:

[0141] The detection module 301 is used to detect, through sensing and radar devices, whether there is at least one target object that meets the preset alarm conditions when the electric excavator is working at low speed.

[0142] The acquisition module 302 is used to acquire the current working status information of the electric excavator when the detection module 301 detects that there is at least one target object that meets the preset alarm conditions.

[0143] The output module 303 is used to output a simulated sound that matches the current working status information to the target object based on the working status information obtained by the acquisition module 302. The simulated sound is used to warn the target object to stay away from the working range of the electric excavator.

[0144] It is evident that implementation Figure 3 The described warning device for low-speed start of electric excavators can detect the presence of at least one target object that meets preset alarm conditions when the electric excavator is operating at low speed. This improves the accuracy of the warning. When at least one target object that meets the preset alarm conditions is detected, the device acquires the current working status information of the electric excavator and outputs a simulated sound matching the current working status information to the target object. The simulated sound is used to warn the target object to move away from the working range of the electric excavator. This improves the warning effect when the electric excavator is in operation and the flexibility of warning in different working scenarios. It effectively avoids driver misoperation and can remind pedestrians, vehicles, and other objects to pay attention and avoid the area, thereby improving the safety of the electric excavator and ensuring the safety of others.

[0145] In an optional embodiment, the sensing device includes at least: a camera device and a ranging device, wherein the camera device is used to identify an image of the target object, and the ranging device is used to measure the distance between the target object and the electric excavator.

[0146] The target objects that meet the preset alarm conditions include:

[0147] Personnel who are less than a preset distance threshold from the electric excavator, motor vehicles and / or non-motor vehicles that are less than a preset distance threshold from the electric excavator, and animals that are less than a preset distance threshold from the electric excavator.

[0148] It is evident that implementation Figure 4The described warning device for low-speed start of electric excavators can detect the presence of various types of target objects that meet preset alarm conditions through sensing equipment. This helps improve the accuracy of the warning, thereby enhancing the warning effect when the electric excavator is in operation and the flexibility of the warning in different operating scenarios. It reminds pedestrians, vehicles and other objects to pay attention and avoid the area, thus improving the safety of using the electric excavator.

[0149] In another alternative embodiment, such as Figure 4 As shown, the device also includes:

[0150] The detection module 301 is also used to determine the number of target objects after the output module 303 outputs an analog sound that matches the current working status information to the target object.

[0151] The judgment module 304 is used to judge whether the number of target objects determined by the detection module 301 is greater than or equal to a preset number threshold, or to judge whether the number of target objects is less than or equal to a preset number threshold.

[0152] The volume adjustment module 305, when the judgment module 304 determines that the number of target objects is greater than or equal to a preset first quantity threshold, increases the volume of the analog sound to a preset first volume threshold according to the first quantity threshold; or, when the judgment module 304 determines that the number of target objects is less than or equal to a preset second quantity threshold, decreases the volume of the analog sound to a preset second volume threshold according to the second quantity threshold.

[0153] It is evident that implementation Figure 4 The described warning device for low-speed start of electric excavators can intelligently adjust the output volume of the simulated sound according to the type and number of the target object. This improves the warning effect when the electric excavator is in operation and the warning flexibility in different operating scenarios. It effectively reminds pedestrians, vehicles and other objects to pay attention and avoid the target, thereby improving the safety of electric excavator use and ensuring the safety of others.

[0154] In yet another alternative embodiment, such as Figure 4 As shown, the working status information includes at least one of the following: the current travel speed of the electric excavator and the working gear.

[0155] And such as Figure 4 As shown, the specific method by which the output module 303 outputs an analog sound that matches the current working status information to the target object is as follows:

[0156] Determine whether the driving speed is within the preset first speed threshold range.

[0157] When it is determined that the driving speed is within the preset first speed threshold range, the electric excavator is in the idle start state, and an engine start sound matching the current idle start state is output to the target object.

[0158] Determine whether the driving speed is within the preset second speed threshold range.

[0159] When the driving speed is determined to be within the preset second speed threshold range, the electric excavator is confirmed to be in road driving mode, and the engine operating sound corresponding to the current road driving state is output to the target object. Alternatively,

[0160] When the working gear is set to the preset first gear, the electric excavator is confirmed to be in digging working state, and digging operation sounds that match the current digging operation state are output to the target object.

[0161] When the working gear is set to the preset second gear, the electric excavator is confirmed to be in the crushing working state, and excavation operation sound matching the current road driving state is output to the target object.

[0162] It is evident that implementation Figure 4 The described warning device for low-speed start of electric excavators can output multiple simulated sounds matching the current working status information to the target object according to different working status information of the electric excavator. This can improve the accuracy of the warning, thereby improving the warning effect when the electric excavator is in operation and the warning flexibility in different working scenarios. It can remind pedestrians, vehicles and other objects to pay attention and avoid the excavator, thus improving the safety of using the electric excavator.

[0163] In yet another alternative embodiment, such as Figure 4 As shown, the detection module 301 is also used to detect, via camera equipment, whether there is a driver in the operator's cab inside the electric excavator when the electric excavator is in an idling start state.

[0164] The acquisition module 302 is also used to acquire the current working status information of the electric excavator when the detection module 301 detects that there is a driver in the cab inside the electric excavator.

[0165] The judgment module 304 is also used to determine whether the working status information obtained by the acquisition module 302 has changed, and / or, when the detection module 301 detects that there is no driver in the cab inside the electric excavator, to determine whether the control panel in the cab has been locked.

[0166] The output module 303 is also used to output an engine start sound that matches the idle start state to the driver when the judgment module 304 determines that the working status information has changed, so as to remind the driver that the electric excavator has started working, and / or, when it is determined that the control panel in the cab is not locked, to output a warning voice message to the outside of the electric excavator that the electric excavator has started and the control panel is not locked, so as to remind the driver to return to the electric excavator as soon as possible to operate it.

[0167] It is evident that implementation Figure 4 The described warning device for low-speed start of electric excavators can detect the presence of a driver in the operator's cab using a camera, thereby reminding the driver that the electric excavator has started working, or reminding a driver who has left the cab that the electric excavator has not been locked. This improves the warning effect when the electric excavator is in operation and the flexibility of warnings in different operating scenarios, effectively avoiding driver misoperation and thus improving the safety of using electric excavators.

[0168] In yet another alternative embodiment, such as Figure 4 As shown, the detection module 301 is also used to detect the ambient noise intensity outside the electric excavator through a sensing device.

[0169] The judgment module 304 is also used to judge whether the ambient noise intensity detected by the detection module 301 is greater than or equal to a preset first noise intensity threshold, or to judge whether the ambient noise intensity is less than or equal to a preset second noise intensity threshold.

[0170] The volume adjustment module 305 is also used to increase the volume of the analog sound to a preset first volume threshold according to the first noise intensity threshold when the judgment module 304 determines that the ambient noise intensity is greater than or equal to a preset first noise intensity threshold, or to decrease the volume of the analog sound to a preset second volume threshold according to the second noise intensity threshold when the ambient noise intensity is less than or equal to a preset second noise intensity threshold.

[0171] It is evident that implementation Figure 4 The described warning device for low-speed start of electric excavators can intelligently adjust the output type and volume of the simulated sound according to the ambient noise intensity of the electric excavator. This improves the warning effect when the electric excavator is in operation and the flexibility of warning in different operating scenarios. It effectively reminds pedestrians, vehicles and other objects to pay attention and avoid the area, thereby improving the safety of electric excavator use and ensuring the safety of others.

[0172] In yet another alternative embodiment, such as Figure 4As shown, the detection module 301 is also used to detect whether the external environment of the electric excavator matches the preset environmental scenario through the sensing device.

[0173] The adjustment module 306 is used to adjust the warning mode of the electric excavator according to the type and volume of the simulated sound that matches the preset environmental scene when the detection module 301 detects that the external environment of the electric excavator matches the preset environmental scene.

[0174] The warning information in the alert mode includes the type and volume of the simulated sound used to alert the target object.

[0175] It is evident that implementation Figure 4 The described warning device for low-speed start of electric excavators can intelligently adjust the output type and volume of the simulated sound according to different external environments of the electric excavator. This improves the warning effect when the electric excavator is in operation and the warning flexibility in different operating scenarios, effectively reminding pedestrians, vehicles and other objects to pay attention and avoid the area, thereby improving the safety of using the electric excavator and ensuring the safety of others.

[0176] Example 4

[0177] Please see Figure 5 , Figure 5 This is a schematic diagram of another warning device for low-speed starting of an electric excavator, as disclosed in an embodiment of the present invention. Figure 5 As shown, the warning device applied to the low-speed start of an electric excavator may include:

[0178] Memory 401 storing executable program code;

[0179] Processor 402 coupled to memory 401;

[0180] The processor 402 calls the executable program code stored in the memory 401 to execute the steps in the warning method for low-speed start of an electric excavator as described in Embodiment 1 or Embodiment 2 of the present invention.

[0181] Example 5

[0182] This invention discloses a computer storage medium storing computer instructions. When these computer instructions are invoked, they are used to execute the steps in the warning method for low-speed starting of an electric excavator as described in Embodiment 1 or Embodiment 2 of this invention.

[0183] Example 6

[0184] This invention discloses a computer program product, which includes a non-transitory computer-readable storage medium storing a computer program, and the computer program is operable to cause a computer to perform the steps in the warning method for low-speed starting of an electric excavator described in Embodiment 1 or Embodiment 2.

[0185] The device embodiments described above are merely illustrative. The modules described as separate components may or may not be physically separate. The components shown as modules may or may not be physical modules; that is, they may be located in one place or distributed across multiple network modules. Some or all of the modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0186] Through the detailed description of the above embodiments, those skilled in the art can clearly understand that each implementation method can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, including read-only memory (ROM), random access memory (RAM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), one-time programmable read-only memory (OTPROM), electrically-erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical disc storage, disk storage, magnetic tape storage, or any other computer-readable medium that can be used to carry or store data.

[0187] Finally, it should be noted that the warning method and device for low-speed starting of an electric excavator disclosed in the embodiments of the present invention are merely preferred embodiments of the present invention and are only used to illustrate the technical solutions of the present invention, not to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A warning method for low-speed start-up of an electric excavator, characterized in that, The method includes: When the electric excavator is working at low speed, the sensor device detects whether there is at least one target object that meets the preset alarm conditions. When at least one target object that meets the preset alarm conditions is detected, the current working status information of the electric excavator is obtained, and a simulated sound matching the current working status information is output to the target object according to the working status information. The simulated sound is used to warn the target object to move away from the working range of the electric excavator. The working status information includes at least one of the following: the current travel speed and working gear of the electric excavator; The step of outputting a simulated sound matching the current working status information to the target object based on the working status information includes: Determine whether the driving speed is within a preset first speed threshold range; When it is determined that the driving speed is within the preset first speed threshold range, the electric excavator is determined to be in an idle start state, and an engine start sound matching the current idle start state is output to the target object; Determine whether the driving speed is within a preset second speed threshold range; When it is determined that the travel speed is within a preset second speed threshold range, the electric excavator is determined to be in a road travel state, and outputs an engine operating sound matching the current road travel state to the target object; or, When the working gear is determined to be the preset first gear, the electric excavator is determined to be in the digging working state, and the digging operation sound that matches the current digging working state is output to the target object; When the working gear is determined to be the preset second gear, the electric excavator is determined to be in the crushing working state, and the excavation operation sound matching the current crushing working state is output to the target object.

2. The warning method for low-speed start of an electric excavator according to claim 1, characterized in that, The sensing device includes at least: a camera and a ranging device, wherein the camera is used to identify the image of the target object and the ranging device is used to measure the distance between the target object and the electric excavator; The target objects that meet the preset alarm conditions include: Personnel whose distance from the electric excavator is less than a preset distance threshold, motor vehicles and / or non-motor vehicles whose distance from the electric excavator is less than a preset distance threshold, and animals whose distance from the electric excavator is less than a preset distance threshold.

3. The warning method for low-speed start of an electric excavator according to claim 1, characterized in that, After outputting a simulated sound matching the current working state information to the target object, the method further includes: Determine the number of target objects and determine whether the number of target objects is greater than or equal to a preset number threshold. When it is determined that the number of target objects is greater than or equal to a preset first quantity threshold, the volume of the simulated sound is increased to a preset first volume threshold according to the first quantity threshold; or, Determine whether the number of the target objects is less than or equal to a preset quantity threshold; When it is determined that the number of the target objects is less than or equal to a preset second quantity threshold, the volume of the simulated sound is reduced to a preset second volume threshold according to the second quantity threshold.

4. The warning method for low-speed starting of an electric excavator according to claim 3, characterized in that, The method further includes: When the electric excavator is in the idle start state, the camera device detects whether there is a driver in the operator's cab inside the electric excavator. When a driver is detected in the cab of the electric excavator, the current working status information of the electric excavator is obtained, and it is determined whether the working status information has changed: When a change in the working status information is detected, an engine start sound matching the idle start state is output to the driver to remind the driver that the electric excavator has started working. When it is detected that there is no driver in the cab of the electric excavator, determine whether the control panel inside the cab is locked; When it is determined that the control panel in the cab is not locked, a warning voice message is output to the outside world indicating that the electric excavator has been started and the control panel is not locked, so as to remind the operator to return to the electric excavator as soon as possible to operate it.

5. The warning method for low-speed starting of an electric excavator according to claim 3, characterized in that, The method further includes: The sensor device is used to detect the ambient noise intensity outside the electric excavator. Determine whether the ambient noise intensity is greater than or equal to a preset first noise intensity threshold; When the ambient noise intensity is determined to be greater than or equal to a preset first noise intensity threshold, the volume of the simulated sound is increased to a preset first volume threshold according to the first noise intensity threshold; or... Determine whether the ambient noise intensity is less than or equal to a preset second noise intensity threshold; When it is determined that the ambient noise intensity is less than or equal to a preset second noise intensity threshold, the volume of the simulated sound is reduced to a preset second volume threshold according to the second noise intensity threshold.

6. The warning method for low-speed starting of an electric excavator according to claim 1, characterized in that, The method further includes: The sensor device detects whether the external environment of the electric excavator matches the preset environmental scenario. When the external environment of the electric excavator is detected to match the preset environmental scenario, the warning mode of the electric excavator is adjusted according to the type and volume of the simulated sound that matches the preset environmental scenario. The warning information in the warning mode includes the type and volume of the simulated sound used to warn the target object.

7. A warning device for low-speed starting of an electric excavator, characterized in that, The device includes: The detection module is used to detect, through sensing and radar devices, whether there is at least one target object that meets the preset alarm conditions when the electric excavator is working at low speed. The acquisition module is used to acquire the current working status information of the electric excavator when the detection module detects that there is at least one target object that meets the preset alarm conditions. The output module is used to output a simulated sound that matches the current working status information to the target object based on the working status information obtained by the acquisition module. The simulated sound is used to warn the target object to move away from the working range of the electric excavator. The working status information includes at least one of the following: the current travel speed and working gear of the electric excavator; The specific method by which the output module outputs an analog sound matching the current working status information to the target object is as follows: Determine whether the driving speed is within a preset first speed threshold range; When it is determined that the driving speed is within the preset first speed threshold range, the electric excavator is determined to be in an idle start state, and an engine start sound matching the current idle start state is output to the target object; Determine whether the driving speed is within a preset second speed threshold range; When it is determined that the travel speed is within a preset second speed threshold range, the electric excavator is determined to be in a road travel state, and outputs an engine operating sound matching the current road travel state to the target object; or, When the working gear is determined to be the preset first gear, the electric excavator is determined to be in the digging working state, and the digging operation sound that matches the current digging working state is output to the target object; When the working gear is determined to be the preset second gear, the electric excavator is determined to be in the crushing working state, and the excavation operation sound matching the current crushing working state is output to the target object.

8. A warning device for low-speed starting of an electric excavator, characterized in that, The device includes: Memory containing executable program code; A processor coupled to the memory; The processor calls the executable program code stored in the memory to execute the warning method for low-speed start of an electric excavator as described in any one of claims 1-6.

9. A computer storage medium, characterized in that, The computer storage medium stores computer instructions, which, when invoked, are used to execute the warning method for low-speed start-up of an electric excavator as described in any one of claims 1-6.

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