Engineering machinery, fault detection method thereof, processor, terminal and remote equipment

Abstract

The embodiment of the invention provides a fault detection method for engineering machinery, a processor, terminal equipment, remote equipment, the engineering machinery and a machine readable storage medium. The fault detection method comprises the following steps: in response to a received query request of remote equipment, sending address information of fault equipment to the remote equipment; in response to a received fault information request of remote equipment, acquiring internal voltage information of at least fault equipment acquired by a voltage acquisition device from the voltage acquisition device; and sending the internal voltage information received from the voltage acquisition device to remote equipment, wherein the remote equipment is configured to determine a fault reason according to the received internal voltage information. The method is carried out only after the remote equipment initiates the query request, so that on the engineering machinery side, the processor runs the corresponding program only after receiving the query instruction of the remote equipment, and resources of the processor are not occupied basically.

Description

Technical Field

[0001] The present application relates to the field of engineering machinery, and specifically to a fault detection method, a processor, a terminal device, a remote device, an engineering machinery, and a machine-readable storage medium for an engineering machinery. Background Art

[0002] Currently, the IoT system used in construction machinery is mainly used for functions such as positioning electronic and electrical devices in construction machinery and querying software versions. When a hardware failure occurs in a device, the fault problem cannot be analyzed. Therefore, when a failure occurs (such as internal damage to the device), the only thing to do is to wait for the machine to be returned to the factory, and the problem cannot be solved in time. In addition, some faults may not be reproduced after the machine is returned to the factory due to environmental changes, which increases the difficulty of fault analysis. Summary of the invention

[0003] The purpose of the embodiments of the present invention is to provide a fault detection method, a processor, a terminal device, a remote device, a construction machine, and a machine-readable storage medium for construction machinery.

[0004] In order to achieve the above-mentioned object, the present application provides a first aspect of a fault detection method for engineering machinery, comprising:

[0005] In response to receiving a query request from a remote device, sending address information of the faulty device to the remote device;

[0006] In response to receiving a fault information request from a remote device, acquiring, from a voltage acquisition device, at least internal voltage information of the faulty device acquired by the voltage acquisition device;

[0007] The internal voltage information received from the voltage acquisition device is sent to a remote device, wherein the remote device is configured to determine the cause of the fault according to the received internal voltage information.

[0008] In an embodiment of the present application, in response to receiving a fault information request from a remote device, obtaining internal voltage information of at least the faulty device collected by the voltage collection device from the voltage collection device includes:

[0009] In response to receiving a fault information request from a remote device, internal voltage information of at least a faulty electronic device in the faulty device collected by the voltage collection device is obtained from the voltage collection device.

[0010] In an embodiment of the present application, the fault detection method further includes:

[0011] Acquire internal voltage information collected by a voltage collection device;

[0012] In the case where it is determined that the internal voltage information is abnormal, determining the device with the abnormal internal voltage information as a faulty device; and

[0013] Stores abnormal internal voltage information.

[0014] In an embodiment of the present application, the fault detection method further includes:

[0015] In response to receiving a fault information request from a remote device, the stored abnormal internal voltage information is sent to the remote device.

[0016] A second aspect of the present application provides a fault detection method for engineering machinery, comprising:

[0017] Sending a query request to a terminal device;

[0018] receiving address information of a faulty device from a terminal device, wherein the faulty device includes at least one of the terminal device and / or other devices communicating with the terminal device;

[0019] Sending a fault information request to the terminal device, wherein the fault information request includes address information, and the terminal device, in response to receiving the fault information request from the remote device, obtains at least internal voltage information of the faulty device collected by the voltage collection device from the voltage collection device;

[0020] receiving internal voltage information from a terminal device;

[0021] Determine the fault based on the internal voltage information.

[0022] In the embodiment of the present application, determining a fault according to the internal voltage information includes:

[0023] comparing the internal voltage information with a corresponding predetermined voltage;

[0024] Determine the cause of the fault based on the comparison results.

[0025] In the embodiment of the present application, determining the cause of the fault according to the comparison result includes:

[0026] When the difference between the internal voltage information and the corresponding predetermined voltage exceeds a preset range, determining that the internal voltage information is abnormal internal voltage information;

[0027] The cause of the fault is determined based on the determined abnormal internal voltage information and a pre-stored fault knowledge base.

[0028] A third aspect of the present application provides a processor configured to execute the above-mentioned fault detection method for engineering machinery.

[0029] A fourth aspect of the present application provides a terminal device for engineering machinery, comprising:

[0030] A voltage collection device configured to collect internal voltage information of key nodes in the terminal device and / or internal voltage information of key nodes in other devices communicating with the terminal device;

[0031] a communication device configured to transmit the internal voltage information to a wireless communication device;

[0032] a wireless communication device configured to communicate with a remote device to transmit the internal voltage information to the remote device; and

[0033] The processors described above.

[0034] In an embodiment of the present application, the terminal device includes a display.

[0035] A fifth aspect of the present application provides an engineering machinery, characterized in that it includes the above-mentioned terminal device for engineering machinery.

[0036] A sixth aspect of the present application provides a remote device configured to execute the above-mentioned fault detection method for engineering machinery.

[0037] A seventh aspect of the present application provides a machine-readable storage medium having instructions stored thereon, the instructions being used to enable a machine to execute the above-mentioned fault detection method for engineering machinery.

[0038] The fault detection method of the embodiment of the present application is performed after a query request is initiated from the remote device (platform side). Therefore, on the engineering machinery side, the processor will only run the corresponding program after receiving the query instruction from the remote device, which basically does not occupy the processor resources and has little impact on the software. For the Internet of Things system with relatively tight processor resources (such as processing power), the above fault detection method can be implemented without increasing processor resources and without additional cost.

[0039] Other features and advantages of the embodiments of the present invention will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The accompanying drawings are used to provide a further understanding of the embodiments of the present invention and constitute a part of the specification. Together with the following specific implementations, they are used to explain the embodiments of the present invention, but do not constitute a limitation on the embodiments of the present invention. In the accompanying drawings:

[0041] Figure 1 A block diagram of an Internet of Things system to which the fault detection method for engineering machinery according to an embodiment of the present application can be applied is schematically shown;

[0042] Figure 2 A flowchart of a fault detection method for engineering machinery according to an embodiment of the present application is schematically shown;

[0043] Figure 3 A flow chart of a fault detection method for engineering machinery according to another embodiment of the present application is schematically shown.

[0044] Description of Reference Numerals

[0045] 101 power module 102 processor

[0046] 200 wireless communication module 301, 302, 303 voltage acquisition device

[0047] 401 Controller 1 402 Controller 2 DETAILED DESCRIPTION

[0048] The specific implementation of the embodiment of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the embodiment of the present invention, and is not used to limit the embodiment of the present invention.

[0049] It should be noted that if the implementation methods of the present application involve directional indications (such as up, down, left, right, front, back...), such directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0050] If there are descriptions involving "first", "second", etc. in the implementation methods of this application, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various implementation methods can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0051] Figure 1 The block diagram of the Internet of Things system to which the fault detection method for engineering machinery according to the embodiment of the present application can be applied is schematically shown. Figure 1 As shown, the IoT system may include a terminal device, a wireless communication module 200 and a voltage acquisition device (301, 302, 303). The terminal device may include a power module 101, and the power module 101 may include a filtering protection circuit, various power conversion circuits (for example, a DC-DC (direct current to direct current) conversion circuit and an LDO (low dropout) linear voltage regulator circuit) and electronic or electrical devices electrically connected to the various power conversion circuits.

[0052] The filtering protection circuit can be connected to the power supply of the engineering machinery (for example, the key switch power supply), and the received voltage is transmitted to each power conversion circuit after filtering to respectively power the electronic or electrical devices connected to the power conversion circuit. In applications where the terminal device can be a display, examples of these devices may include, but are not limited to: a processor (MCU) 102, a power amplifier, a display screen, a touch screen, an audio decoder, other chips, a bus communication module (for example, a CAN circuit), and a USB communication module. The terminal device may also include a communication module (not shown), which can be used for communication between the processor 102 and the wireless communication module 200. The wireless communication module 200 may use, for example, 4G and 5G communication methods.

[0053] In some embodiments, the terminal device can communicate with other devices through a bus communication module (such as a CAN circuit). Examples of other devices may include controllers, such as Figure 1 Controller 1401 and controller 2402 are shown in FIG.

[0054] The voltage acquisition device can be used to collect the voltage of key nodes in the terminal device, such as the input voltage, output voltage and voltage at the internal key nodes of each electronic device in the terminal device. For example, taking the terminal device as a display, the voltage acquisition device 301 can collect the voltage of some (e.g., key) electronic devices or all electronic devices in the terminal device, such as input voltage, output voltage, internal node voltage, etc. Examples of voltages that can be collected may include, but are not limited to, for example, the input voltage of the power module 101 (e.g., 24V voltage), the power supply voltage of the power amplifier (e.g., 12V), the power supply voltage of the processor (MCU) 102 (e.g., 4.2V), the operating voltage of the processor peripheral (e.g., display backlight) (e.g., 3V and 5V), and the operating voltage of the communication module (e.g., 5V and 3V). In the example where the terminal device communicates with the controller (e.g., controller 1401 and controller 2402) through, for example, a CAN circuit, the voltage acquisition device can be a plurality of voltage acquisition devices (301, 302, 303). The voltage acquisition device 302 can be used to acquire the relevant voltage of the controller 1401, and the voltage acquisition device 302 can be used to acquire the relevant voltage of the controller 2402. After the processor 102 obtains the voltage collected by the voltage acquisition device, it can transmit the voltage information to the wireless communication module 200 through the communication module, and send the voltage information to the remote device through the wireless communication module 200. The remote device can have a wireless communication function (such as 4G, 5G function). Examples of remote devices may include, but are not limited to, servers, desktops, laptops, mobile terminals (such as mobile phones, tablet computers, smart wearable devices, etc.).

[0055] Figure 2The flowchart of the fault detection method for engineering machinery according to the embodiment of the present application is schematically shown, and the method can be applied to a terminal device (eg, a display). Figure 2 As shown, in an embodiment of the present application, a fault detection method for engineering machinery may include the following steps.

[0056] In step S210, in response to receiving a query request from a remote device, address information of the faulty device is sent to the remote device.

[0057] Specifically, the terminal equipment and / or other equipment of the engineering machinery (e.g., Figure 1 The controller 1401, controller 2402, etc. shown in the figure may have a self-check function or program. After these devices are powered on, if any of these devices fails, it can be detected by the device itself. After the failure is detected, the address information of the failed device (i.e., the failed device) can be marked. Taking the terminal device as an example, if the terminal device is detected to be faulty, the processor (MCU) 102 of the terminal device can mark the address information of the terminal device as the address information of the failed device and save the address information.

[0058] When the user wants to check the status of the electronic / electrical equipment in the construction machinery, the remote device can be operated to send a query request to the terminal device. After the terminal device receives the query request, for example, the processor 102 can query whether the faulty device address information is stored in, for example, the memory, and optionally can query whether the faulty device address information is stored from other devices (such as controllers) that communicate with the terminal device through, for example, a bus communication module (such as a CAN circuit). If there is faulty device address information, the processor 102 can transmit the address information to the wireless communication module 200 through the communication module, and send the address information of the faulty device to the remote device via the wireless communication module 200.

[0059] In step S220, in response to receiving a fault information request from a remote device, at least internal voltage information of the faulty device collected by the voltage collection device is obtained from the voltage collection device.

[0060] Specifically, after the remote device receives the address information of the faulty device sent by the terminal device, a fault information request may be generated, and the fault information request may include the above-mentioned address information of the faulty device. The remote device may send the generated fault information request to the terminal device. When the terminal device receives the fault information request, for example, the processor 102 may obtain the internal voltage information of at least the faulty device collected by the voltage collection device from the voltage collection device (301, 302, 303). In the example where the voltage collection device (301, 302, 303) includes a processing unit (such as a processing chip), the processor 102 may send a voltage collection instruction to the voltage collection device (301, 302, 303) to instruct the voltage collection device (301, 302, 303) to collect at least the internal voltage information of the faulty device. Since the fault information request includes the address information of the faulty device, after the processor 102 receives the fault information request, it may know which device(s) has failed according to the address information. In one example, the processor 102 may only obtain the internal voltage information of the faulty device from the voltage collection device corresponding to the faulty device. Taking the failure of the terminal device as an example, the processor 102 can obtain the internal voltage information of the key nodes in the terminal device collected on-site by the voltage collection device 301 from the voltage collection device 301. For example, the collected voltage information may include, but is not limited to, the input voltage of the power module 101 (e.g., 24V voltage), the power supply voltage of the power amplifier (e.g., 12V), the power supply voltage of the processor (MCU) 102 (e.g., 4.2V), the operating voltage of the processor peripherals (e.g., display backlight) (e.g., 3V and 5V), and the operating voltage of the communication module (e.g., 5V and 3V).

[0061] In another example, the faulty device may include multiple electronic devices. Taking a terminal device (e.g., a display) as an example, the terminal device may include multiple electronic devices, such as a processor 102, a display screen, a touch screen, etc. Each electronic device may be assigned address information. When the terminal device detects that any electronic device has a fault, the processor 102 may mark the faulty electronic device (e.g., mark the address of the faulty electronic device as a faulty address). The processor 102 may obtain the internal voltage information of the faulty electronic device collected by the voltage collection device corresponding to the faulty device.

[0062] In step S230, the internal voltage information received from the voltage acquisition device is sent to a remote device, wherein the remote device is configured to determine the cause of the fault according to the received internal voltage information.

[0063] Specifically, the internal voltage information collected by the voltage collection device 301 can be transmitted to the processor 102, and the processor 102 can transmit the internal voltage information to the wireless communication module 200 through the communication module, and transmit it to the remote device via the wireless communication module 200 for the remote device to perform fault analysis (or diagnosis).

[0064] In an optional embodiment of the present application, the fault detection method may further include:

[0065] Acquire internal voltage information collected by a voltage collection device;

[0066] In the case where it is determined that the internal voltage information is abnormal, determining the device with the abnormal internal voltage information as a faulty device; and

[0067] Stores abnormal internal voltage information.

[0068] Specifically, the terminal device and / or other devices (such as the controller 1401, the controller 2402, etc.) can also determine whether a fault occurs based on the internal voltage information obtained from the respective voltage acquisition devices. Taking the terminal device as an example, the processor 102 can obtain the internal voltage information collected by the voltage acquisition device 301 regularly or in real time. If the internal voltage information is abnormal (for example, the voltage of one or more key nodes deviates from the preset voltage by more than a threshold), it can be determined that the terminal device has a fault, and the abnormal internal voltage information can be stored in, for example, a memory.

[0069] In an embodiment of the present application, the fault detection method may further include:

[0070] In response to receiving a fault information request from a remote device, the stored abnormal internal voltage information is sent to the remote device.

[0071] Specifically, in this embodiment, after the terminal device receives the fault information request from the remote device, in addition to sending the internal voltage information collected on-site by the voltage collection device to the remote device, it can also send the stored historical abnormal internal voltage information for the remote device to perform further fault analysis.

[0072] Figure 3 The flowchart of a fault detection method for engineering machinery according to another embodiment of the present application is schematically shown, and the fault detection method can be applied to remote equipment. Figure 3 As shown, in an embodiment of the present application, a fault detection method for engineering machinery may include the following steps.

[0073] In step S310, a query request is sent to a terminal device.

[0074] In step S320, address information of a faulty device is received from a terminal device, wherein the faulty device includes at least one of the terminal device and / or other devices that communicate with the terminal device.

[0075] When the user wants to check the status of the electronic / electrical equipment in the construction machinery, the remote device can be operated to send a query request to the terminal device. After the terminal device receives the query request, for example, the processor 102 can query whether the faulty device address information is stored in, for example, the memory, and optionally can query whether the faulty device address information is stored from other devices (such as controllers) that communicate with the terminal device through, for example, a bus communication module (such as a CAN circuit). If there is faulty device address information, the processor 102 can transmit the address information to the wireless communication module 200 through the communication module, and send the address information of the faulty device to the remote device via the wireless communication module 200.

[0076] In step S330, a fault information request is sent to the terminal device, wherein the fault information request includes address information of the faulty device, wherein the terminal device obtains at least internal voltage information of the faulty device collected by the voltage collection device from the voltage collection device in response to receiving the fault information request from the remote device.

[0077] In step S340, internal voltage information is received from the terminal device;

[0078] In step S350, a fault is determined based on the internal voltage information.

[0079] Specifically, in the embodiment of the present application, determining a fault according to the internal voltage information may include:

[0080] comparing the internal voltage information with a corresponding predetermined voltage;

[0081] Determine the cause of the fault based on the comparison results.

[0082] More specifically, determining the cause of the fault according to the comparison result may include:

[0083] When the difference between the internal voltage information and the corresponding predetermined voltage exceeds a preset range, determining that the internal voltage information is abnormal internal voltage information;

[0084] The fault cause is determined based on the determined abnormal internal voltage information and the pre-stored fault knowledge base. For example, assuming that the collected internal voltage information is V IN , the predetermined voltage corresponding to the voltage information is V EN , if 1.2*V EN ≥V IN ≥0.8*V EN, then the voltage is within the normal range, if it exceeds the range, it can be considered as an abnormal voltage. A fault knowledge base can be constructed in advance based on the abnormal voltages of various electronic devices / devices and the fault causes / types determined for these abnormal voltages, and the fault knowledge base can be stored in a memory, for example. After receiving the abnormal internal voltage information, the remote device can use the fault knowledge base to perform fault analysis or preliminary diagnosis.

[0085] In an embodiment of the present application, a processor is provided, which is configured to execute reference Figure 2 The described embodiments provide a fault detection method for an engineering machine.

[0086] In an embodiment of the present application, a terminal device for engineering machinery is provided, including:

[0087] A voltage collection device configured to collect internal voltage information of key nodes in the terminal device and / or internal voltage information of key nodes in other devices communicating with the terminal device;

[0088] a communication device configured to transmit the internal voltage information to a wireless communication device;

[0089] a wireless communication device configured to communicate with a remote device to transmit the internal voltage information to the remote device; and

[0090] The processor of the above embodiment.

[0091] In an embodiment of the present application, the terminal device may include a display.

[0092] In an embodiment of the present application, a construction machinery is provided, comprising a terminal device for the construction machinery according to any of the above embodiments.

[0093] In an embodiment of the present application, a remote device is provided, which is configured to execute a reference Figure 3 The described embodiments provide a fault detection method for an engineering machine.

[0094] In an embodiment of the present application, a machine-readable storage medium is provided, on which instructions are stored, and the instructions are used to enable a machine to execute the fault detection method for engineering machinery of any of the above embodiments.

[0095] The solution provided by the embodiment of the present application can establish software to send voltage query instructions on the remote device (platform side), and only the voltage acquisition device needs to be added on the engineering machinery side, and the existing software program needs to be slightly modified to add corresponding functions. A preliminary judgment can be made after the equipment fails, and the fault problem can be quickly located, which reduces the difficulty and working time of on-site technical support and saves time for problem processing. In addition, compared with the traditional waiting for return to the factory for processing, the solution of the embodiment of the present application can collect fault site information (voltage information), which has important reference significance for the situation where the fault does not recur, and helps to solve the occasional fault phenomenon. Furthermore, the fault detection method of the embodiment of the present application is carried out after the query request is initiated from the remote device (platform side), so on the engineering machinery side, the processor will only run the corresponding program after receiving the query instruction of the remote device, so that the processor resources will not be occupied, and the software will have no effect. For the Internet of Things system with relatively tight processor resources (such as processing power), the above-mentioned fault detection method can be realized without increasing processor resources, without additional cost.

[0096] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that include computer-usable program code.

[0097] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0098] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1A function specified in one or more boxes.

[0099] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0100] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0101] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. The memory is an example of a computer-readable medium.

[0102] Computer readable media include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. Information can be computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include temporary computer readable media (transitory media), such as modulated data signals and carrier waves.

[0103] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0104] The above are only embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included within the scope of the claims of the present application.

Claims

1. A fault detection method for engineering machinery, characterized in that: include: In response to receiving a query request from a remote device, sending address information of a faulty device to the remote device; In response to receiving a fault information request of the remote device, acquiring from a voltage acquisition device at least internal voltage information of the faulty device acquired by the voltage acquisition device; The internal voltage information received from the voltage acquisition device is sent to the remote device, wherein the remote device is configured to determine a fault cause according to the received internal voltage information.

2. The fault detection method according to claim 1, characterized in that: The step of acquiring, in response to receiving the fault information request of the remote device, at least internal voltage information of the faulty device collected by the voltage collection device from the voltage collection device comprises: In response to receiving the fault information request of the remote device, internal voltage information of at least a faulty electronic device in the faulty device collected by the voltage collection device is obtained from the voltage collection device.

3. The fault detection method according to claim 1, characterized in that: Also includes: Acquiring internal voltage information collected by the voltage collection device; In the case where it is determined that the internal voltage information is abnormal, determining the device with the abnormal internal voltage information as a faulty device; as well as Stores abnormal internal voltage information.

4. The fault detection method according to claim 1, characterized in that: Also includes: In response to receiving a fault information request from the remote device, the stored abnormal internal voltage information is sent to the remote device.

5. A fault detection method for engineering machinery, characterized in that: include: Sending a query request to a terminal device; receiving address information of a faulty device from the terminal device, wherein the faulty device includes at least one of the terminal device and / or other devices communicating with the terminal device; Sending a fault information request to the terminal device, wherein the fault information request includes the address information, and the terminal device, in response to receiving the fault information request from the remote device, obtains from the voltage acquisition device at least the internal voltage information of the faulty device acquired by the voltage acquisition device; receiving the internal voltage information from the terminal device; A fault is determined based on the internal voltage information.

6. The fault detection method according to claim 5, characterized in that: Determining a fault according to the internal voltage information includes: comparing the internal voltage information with a corresponding predetermined voltage; Determine the cause of the fault based on the comparison results.

7. The fault detection method according to claim 6, characterized in that: Determining the cause of the fault according to the comparison result includes: In the case where the difference between the internal voltage information and the corresponding predetermined voltage exceeds a preset range, determining that the internal voltage information is abnormal internal voltage information; The cause of the fault is determined based on the determined abnormal internal voltage information and a pre-stored fault knowledge base.

8. A processor, characterized in that: The method is configured to execute the fault detection method for a construction machine according to any one of claims 1 to 4.

9. A terminal device for engineering machinery, characterized in that: include: A voltage collection device, configured to collect internal voltage information of key nodes in the terminal device and / or internal voltage information of key nodes in other devices communicating with the terminal device; a communication device configured to transmit the internal voltage information to a wireless communication device; The wireless communication device is configured to communicate with a remote device to transmit the internal voltage information to the remote device; as well as A processor according to claim 8.

10. The terminal device according to claim 9, characterized in that: The terminal device includes a display.

11. An engineering machine, characterized in that: It comprises a terminal device for engineering machinery according to claim 9 or 10.

12. A remote device, characterized in that: The method is configured to execute the fault detection method for a construction machine according to any one of claims 5 to 7.

13. A machine-readable storage medium, characterized in that: The machine-readable storage medium stores instructions for enabling a machine to execute the fault detection method for engineering machinery according to any one of claims 1 to 7.

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