Inverter alarm method and device, storage medium and vehicle

By detecting the inverter's drive signals and displaying fault parameters, the problem of users being unable to identify inverter malfunctions has been solved, improving fault handling efficiency and user experience.

CN116620163BActive Publication Date: 2026-04-07GREAT WALL MOTOR CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2023-05-29
Publication Date
2026-04-07

AI Technical Summary

Technical Problem

Users are unable to identify the cause of inverter malfunctions in a timely manner, affecting their user experience.

Method used

By obtaining the inverter's drive signal, the target drive parameters are detected, and based on the correspondence between the drive parameters and fault parameters, the target fault parameters are determined and displayed. Alarm modules such as indicator lights and buzzers are used to indicate abnormal states, and abnormal logs and fault solutions are generated.

Benefits of technology

It enables timely display of the cause of the fault when the inverter malfunctions, improving the efficiency of troubleshooting and repair for users and enriching the user experience.

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Abstract

This application discloses an inverter alarm method, device, storage medium, and vehicle. The method includes: obtaining a drive signal sent by the inverter to an alarm module; detecting the drive signal to obtain target drive parameters; determining a target fault parameter corresponding to the target drive parameters based on the correspondence between drive parameters and fault parameters; and displaying the target fault parameter. This method uses an alarm module to indicate the inverter's operating status and determines the target fault parameter based on the drive signal, thereby enabling the display of the fault cause causing the inverter malfunction to the outside world when the inverter is in an abnormal operating state, allowing users to handle the situation promptly.
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Description

Technical Field

[0001] This application relates to the field of vehicle alarms, and more particularly to an inverter alarm method, device, storage medium, and vehicle. Background Technology

[0002] As one of the most frequently used components in off-road vehicles, in-vehicle inverters are attracting increasing attention from car owners. Inverters can convert the vehicle's 12V voltage to 220V voltage to meet the power needs of in-vehicle electronic devices.

[0003] In practical applications, various factors can cause inverters to operate abnormally, affecting normal user operation. For existing inverters, users cannot perceive the cause of the malfunction, making it impossible for them to handle the problem in a timely manner and impacting their user experience. Summary of the Invention

[0004] This application provides an inverter alarm method, device, storage medium, and vehicle for displaying the cause of the inverter malfunction when the inverter is in an abnormal operating state, so that the user can handle it in a timely manner.

[0005] To achieve the above objectives, this application provides the following technical solution:

[0006] An inverter alarm method includes:

[0007] The inverter sends a drive signal to the alarm module; the alarm module can use the drive signal to indicate the operating status of the inverter.

[0008] The driving signal is detected to obtain the target driving parameters;

[0009] Based on the correspondence between drive parameters and fault parameters, the target fault parameters corresponding to the target drive parameters are determined; the fault parameters are used to indicate the fault causes that trigger the inverter malfunction.

[0010] Display the target fault parameters.

[0011] Optionally, after detecting the driving signal to obtain the target driving parameters, the method further includes:

[0012] The operating state of the inverter is determined based on the target driving parameters.

[0013] Optionally, determining the operating state of the inverter based on the target drive parameters includes:

[0014] If the target drive parameter is greater than the threshold, the inverter is determined to be in an abnormal operating state.

[0015] If the target drive parameter is not greater than the threshold, then the inverter is determined to be in normal working condition.

[0016] Optionally, the alarm module includes indicator lights;

[0017] If the target drive parameter is greater than the threshold, after determining that the inverter is in an abnormal operating state, the process further includes:

[0018] The display parameters of the indicator light are controlled to correspond to the target driving parameters.

[0019] Optionally, the alarm module includes a buzzer;

[0020] If the target drive parameter is greater than the threshold, after determining that the inverter is in an abnormal operating state, the process further includes:

[0021] The audio parameters of the buzzer are controlled to correspond to the target driving parameters.

[0022] Optionally, after determining the target fault parameters corresponding to the target drive parameters based on the correspondence between drive parameters and fault parameters, the method further includes:

[0023] Based on the target fault parameters, an anomaly log is generated and stored in a designated storage area.

[0024] Optionally, after determining the target fault parameters corresponding to the target drive parameters based on the correspondence between drive parameters and fault parameters, the method further includes:

[0025] The target fault parameters are sent to the cloud so that the cloud can provide processing information corresponding to the target fault parameters; the processing information includes the fault solution for the inverter.

[0026] The processing information is displayed.

[0027] An inverter alarm device, comprising:

[0028] The signal acquisition unit is used to acquire the drive signal sent by the inverter to the alarm module; the alarm module can indicate the working status of the inverter through the drive signal.

[0029] A signal detection unit is used to detect the driving signal to obtain the target driving parameters;

[0030] The fault determination unit is used to determine the target fault parameter corresponding to the target drive parameter based on the correspondence between drive parameters and fault parameters; the fault parameter is used to indicate the fault cause that causes the inverter to malfunction.

[0031] The fault display unit is used to display the target fault parameters.

[0032] Optional, also includes:

[0033] The state determination unit is used to determine the operating state of the inverter based on the target drive parameters.

[0034] Optionally, the state determination unit is specifically used for:

[0035] If the target drive parameter is greater than the threshold, the inverter is determined to be in an abnormal operating state.

[0036] If the target drive parameter is not greater than the threshold, then the inverter is determined to be in normal working condition.

[0037] Optionally, the alarm module includes indicator lights, and the status determination unit is further configured to:

[0038] The display parameters of the indicator light are controlled to correspond to the target driving parameters.

[0039] Optionally, the alarm module includes a buzzer, and the status determination unit is further configured to:

[0040] The audio parameters of the buzzer are controlled to correspond to the target driving parameters.

[0041] Optional, also includes:

[0042] A log storage unit is used to generate an anomaly log based on the target fault parameters and store the anomaly log in a designated storage area.

[0043] Optionally, the fault display unit is further configured to:

[0044] The target fault parameters are sent to the cloud so that the cloud can provide processing information corresponding to the target fault parameters; the processing information includes the fault solution for the inverter.

[0045] The processing information is displayed.

[0046] A storage medium comprising a stored program, wherein the program is executed by a processor to perform the inverter alarm method.

[0047] A vehicle comprising:

[0048] The inverter is used to send drive signals to the alarm module;

[0049] The alarm module can indicate the operating status of the inverter through the drive signal;

[0050] The controller is used to detect the drive signal, obtain the target drive parameters, and determine the target fault parameters corresponding to the target drive parameters based on the correspondence between the drive parameters and fault parameters; the fault parameters are used to indicate the fault cause that leads to the inverter malfunction.

[0051] A display for showing the target fault parameters.

[0052] The technical solution provided in this application obtains the drive signal sent by the inverter to the alarm module, detects the drive signal, and obtains the target drive parameters. Based on the correspondence between the drive parameters and fault parameters, the target fault parameters corresponding to the target drive parameters are determined and displayed. This application uses the alarm module to indicate the inverter's operating status and determines the target fault parameters based on the drive signals. Therefore, it can display the cause of the fault that caused the inverter malfunction to the outside world when the inverter is in an abnormal operating state, so that the user can handle it in a timely manner. Attached Figure Description

[0053] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0054] Figure 1 A flowchart illustrating an inverter alarm method provided in an embodiment of this application;

[0055] Figure 2 A schematic diagram of the architecture of an inverter alarm system provided in this application embodiment;

[0056] Figure 3 A schematic diagram of the architecture of an inverter alarm device provided in this application embodiment;

[0057] Figure 4 This is a schematic diagram of the architecture of a vehicle provided in an embodiment of this application. Detailed Implementation

[0058] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0059] In this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. The terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0060] like Figure 1 The diagram shown is a flowchart of an inverter alarm method provided in an embodiment of this application, which can be applied to the electronic control unit (ECU) of a vehicle and includes the following steps.

[0061] S101: Receive the drive signal sent by the inverter to the alarm module.

[0062] The alarm module can indicate the inverter's operating status through drive signals.

[0063] In this embodiment of the application, when the inverter is in an abnormal working state due to a fault, the inverter will perform a self-test to obtain the fault parameters corresponding to the fault, and generate a drive signal based on the drive parameters corresponding to the fault parameters. Then the inverter will send the drive signal to the alarm module, and the alarm module will prompt the inverter to be in an abnormal working state through the drive signal.

[0064] It should be noted that the alarm module shown in the embodiments of this application includes, but is not limited to, indicator lights and buzzers.

[0065] S102: Detect the drive signal to obtain the target drive parameters.

[0066] Among them, the driving signal includes, but is not limited to, voltage signal. Accordingly, the voltage signal is detected, and the target driving parameter obtained can be the duty cycle of the voltage signal. Specifically, the duty cycle of the voltage signal is obtained by detecting the duty cycle of the voltage signal. The so-called duty cycle refers to the percentage of the time that the alarm module is powered on in the entire inverter working cycle.

[0067] Optionally, after detecting the drive signal and obtaining the target drive parameters, the operating state of the inverter can be determined based on the target drive parameters.

[0068] In the embodiments of this application, the operating state of the inverter includes either a normal operating state or an abnormal operating state.

[0069] Optionally, if the target drive parameter is greater than the threshold, the inverter is determined to be in an abnormal operating state; if the target drive parameter is not greater than the threshold, the inverter is determined to be in a normal operating state. Specifically, taking the target duty cycle as the target drive parameter and setting the threshold to 0%, if the target duty cycle is greater than 0%, the inverter is determined to be in an abnormal operating state; if the target duty cycle is equal to 0%, the inverter is determined to be in a normal operating state.

[0070] For indicator lights as alarm modules, if it is determined that the inverter is in an abnormal working state, the display parameters of the indicator lights (such as brightness, flashing frequency, etc.) can be controlled to correspond to the target driving parameters, thereby improving the practicality and fun of the indicator lights and enriching the user experience.

[0071] Understandably, by controlling the display parameters of the indicator lights to correspond with the target drive parameters, the indicator lights can display the alarm effects corresponding to the target drive parameters. The outside world can intuitively understand the cause of the fault that caused the inverter to be in an abnormal working state through different alarm effects.

[0072] For the buzzer as an alarm module, if it is determined that the inverter is in an abnormal working state, the audio parameters of the buzzer (such as volume, frequency, etc.) can be controlled to correspond to the target driving parameters, thereby improving the practicality and fun of the buzzer and enriching the user experience.

[0073] Understandably, by controlling the audio parameters of the buzzer to correspond with the target drive parameters, the buzzer can display the alarm effect corresponding to the target drive parameters. The outside world can intuitively understand the cause of the fault that caused the inverter to be in an abnormal working state through different alarm effects.

[0074] S103: Based on the correspondence between drive parameters and fault parameters, determine the target fault parameters corresponding to the target drive parameters.

[0075] The fault parameters indicate the causes of inverter malfunctions. Specifically, the causes of inverter malfunctions include, but are not limited to: ACC signal malfunction, input power supply malfunction, temperature malfunction, load malfunction, output short circuit protection malfunction, and output leakage protection malfunction.

[0076] To ensure that the cause of the inverter malfunction can be quickly and intuitively identified during subsequent troubleshooting, the target fault parameters are saved.

[0077] Optionally, based on the target fault parameters, an anomaly log is generated and stored in a designated storage area. Using the anomaly log in the designated storage area can effectively improve the inverter's maintenance efficiency. Furthermore, the designated storage area includes, but is not limited to, the cloud, mobile terminals, and on-board storage devices.

[0078] Furthermore, to facilitate timely handling by users and improve the efficiency of inverter fault repair, corresponding fault solutions can be determined based on the target fault parameters, and the fault solutions can be displayed to users to enrich the user experience.

[0079] Optionally, the target fault parameters can be sent to the cloud so that the cloud can provide feedback on the processing information corresponding to the target fault parameters, including the fault solution for the inverter; and the processing information can be displayed.

[0080] Generally speaking, processing information and target fault parameters can be displayed on the same screen and stored in the same storage area.

[0081] S104: Displays the target fault parameters.

[0082] The channels for displaying target fault parameters include, but are not limited to, in-vehicle multimedia systems and mobile terminals.

[0083] It should be noted that by displaying the target fault parameters, the efficiency of inverter fault diagnosis can be improved, the time cost for users to repair faults can be reduced, and thus the user experience can be improved.

[0084] Based on the process shown in S101-S104 above, the alarm module prompts the inverter's operating status and determines the target fault parameters based on the drive signal. This enables the system to display the cause of the inverter's abnormality to the outside world when the inverter is in an abnormal operating state, so that the user can handle it in a timely manner.

[0085] To facilitate understanding of the processes shown in S101-S104 above, this application elaborates on the operation of the inverter alarm system. Specifically, the inverter alarm system is applied to a vehicle and includes an inverter, indicator lights (the drive signal required by these indicator lights is a 12V voltage signal with pulse width modulation and a frequency of 100Hz, and the indicator lights display both green and red lights), a controller, and a display screen, such as... Figure 2 As shown, the indicator light is electrically connected to the inverter, the inverter is connected to the controller, and the controller is connected to the display screen. (See also...) Figure 2 The system architecture shown can be used to implement the following steps by an inverter alarm system.

[0086] Step 1: When the inverter is in normal working condition, the inverter sends the first drive signal corresponding to the green indicator light to the indicator light.

[0087] Step 2: Based on the first driving signal, the indicator light sets its display effect to the green indicator light.

[0088] Step 3: The controller detects the first drive signal to obtain the first drive parameters.

[0089] Step 4: Based on the correspondence between the drive parameters and the fault parameters, the controller determines the first fault parameter corresponding to the first drive parameter.

[0090] Step 5: The display screen shows the first fault parameters sent by the display controller.

[0091] Step 6: When the inverter is in an abnormal working state, the inverter sends the second drive signal corresponding to the red indicator light to the indicator light.

[0092] Step 7: Based on the second driving signal, the indicator light sets its own display effect to the red indicator light.

[0093] Step 8: The controller detects the obtained second drive signal to obtain the second drive parameters.

[0094] Step 9: Based on the correspondence between the drive parameters and the fault parameters, the controller determines the second fault parameter corresponding to the second drive parameter.

[0095] Step 10: The display screen shows the second fault parameter sent by the controller.

[0096] It should be noted that the correspondence between the driving parameters and fault parameters mentioned in the above steps can be found in Table 1.

[0097] Table 1

[0098]

[0099]

[0100] The values ​​of A, B, C, D, E, and F in Table 1 above can be set by technicians according to the actual situation. Furthermore, the inverter's fault parameters include, but are not limited to, those shown in Table 1 above.

[0101] Based on the steps mentioned above, the inverter's operating status is indicated by indicator lights, and the target fault parameters are determined based on the drive signals. This enables the inverter to display the cause of the fault when it is in an abnormal operating state, so that users can handle it in a timely manner.

[0102] Corresponding to the inverter alarm method provided in the above embodiments of this application, the embodiments of this application also provide an inverter alarm device.

[0103] like Figure 3 The diagram shown is a schematic of the architecture of an inverter alarm device provided in an embodiment of this application, including the following units.

[0104] The signal acquisition unit 100 is used to acquire the drive signal sent by the inverter to the alarm module; the alarm module can indicate the working status of the inverter through the drive signal.

[0105] In the inverter alarm device shown, the alarm module includes an indicator light and a buzzer.

[0106] The signal detection unit 200 is used to detect the drive signal and obtain the target drive parameters.

[0107] The fault determination unit 300 is used to determine the target fault parameter corresponding to the target drive parameter based on the correspondence between drive parameters and fault parameters; the fault parameter is used to indicate the fault cause that causes the inverter to malfunction.

[0108] The fault display unit 400 is used to display the target fault parameters.

[0109] In the inverter alarm device shown, the fault display unit 400 is also used to: send the target fault parameters to the cloud so that the cloud can provide feedback on the processing information corresponding to the target fault parameters; the processing information includes the inverter's fault solution; and display the processing information.

[0110] The state determination unit 500 is used to determine the operating state of the inverter based on the target drive parameters.

[0111] In the inverter alarm device shown, the state determination unit 500 is specifically used to: determine that the inverter is in an abnormal working state if the target drive parameter is greater than the threshold; and determine that the inverter is in a normal working state if the target drive parameter is not greater than the threshold.

[0112] Optionally, the status determination unit 500 is also used to: control the display parameters of the indicator lights to correspond to the target drive parameters.

[0113] Optionally, the state determination unit 500 is also used to: control the audio parameters of the buzzer to correspond to the target drive parameters.

[0114] Log storage unit 600 is used to generate an exception log based on the target fault parameters and store the exception log in a specified storage area.

[0115] Based on the aforementioned inverter alarm device, the alarm module indicates the inverter's operating status and determines the target fault parameters based on the drive signal. This enables the device to display the cause of the inverter malfunction to the outside world when the inverter is in an abnormal operating state, so that users can handle it in a timely manner.

[0116] This application also provides a computer-readable storage medium including a stored program, wherein the program executes the inverter alarm method provided in this application.

[0117] This application also provides a vehicle, such as Figure 4 As shown, it includes:

[0118] Inverter 401 is used to send drive signals to alarm module 402;

[0119] The alarm module 402 can indicate the operating status of the inverter 401 through drive signals;

[0120] The controller 403 is used to detect the drive signal, obtain the target drive parameters, and determine the target fault parameters corresponding to the target drive parameters based on the correspondence between the drive parameters and fault parameters; the fault parameters are used to indicate the fault cause that causes the inverter 401 to malfunction.

[0121] The controller 403 is also used to generate an exception log based on the target fault parameters and store the exception log in a specified storage area.

[0122] The controller 403 is also used to send the target fault parameters to the cloud so that the cloud can provide feedback on the processing information corresponding to the target fault parameters; the processing information includes the inverter's fault solution.

[0123] Display 404 is used to display the target fault parameters.

[0124] Display 404 is also used to display processed information.

[0125] Based on the aforementioned vehicle, the alarm module indicates the inverter's operating status and determines the target fault parameters based on the drive signal. This enables the system to display the cause of the inverter malfunction to the outside world when the inverter is in an abnormal operating state, allowing users to promptly address the malfunction of the vehicle inverter.

[0126] Furthermore, the functions described above in the embodiments of this application can be performed at least in part by one or more hardware logic components. For example, without limitation, exemplary types of hardware logic components that can be used include: Field Programmable Gate Arrays (FPGAs), Application-Specific Integrated Circuits (ASICs), Application Standard Products (ASSPs), System-on-Chip (SOCs), Complex Programmable Logic Devices (CPLDs), and so on.

[0127] Although the subject matter has been described using language specific to structural features and / or methodological logic, it should be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or actions described above. Rather, the specific features and actions described above are merely illustrative examples of implementing the claims.

[0128] While several specific implementation details are included in the foregoing discussion, these should not be construed as limiting the scope of this application. Certain features described in the context of individual embodiments may also be implemented in combination in a single embodiment. Conversely, various features described in the context of a single embodiment may also be implemented individually or in any suitable sub-combination in multiple embodiments.

[0129] The above description is merely a preferred embodiment of this application and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of disclosure in this application is not limited to technical solutions formed by specific combinations of the above-described technical features, but should also cover other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the above-described concept. For example, technical solutions formed by substituting the above features with (but not limited to) technical features with similar functions disclosed in this application.

Claims

1. An inverter alarm method, characterized in that, include: Obtain the drive signal sent by the inverter to the alarm module; The alarm module can indicate the operating status of the inverter through the drive signal; The drive signal is generated by the inverter when a fault occurs, using the fault parameters determined by self-testing and the corresponding drive parameters; The driving signal is detected to obtain the target driving parameters; Based on the correspondence between driving parameters and fault parameters, the target fault parameters corresponding to the target driving parameters are determined. The fault parameters are used to indicate the cause of the fault that causes the inverter to malfunction; the drive parameters include the duty cycle of the voltage signal; in the correspondence, the fault cause corresponding to a duty cycle of A% is an abnormal ACC enable signal, the fault cause corresponding to a duty cycle of B% is an abnormal input power supply, the fault cause corresponding to a duty cycle of C% is an abnormal temperature, the fault cause corresponding to a duty cycle of D% is an abnormal load, the fault cause corresponding to a duty cycle of E% is an output short circuit protection, and the fault cause corresponding to a duty cycle of F% is an output leakage protection, where A, B, C, D, E, and F are preset calibration values; Display the target fault parameters.

2. The method according to claim 1, characterized in that, After detecting the drive signal to obtain the target drive parameters, the method further includes: The operating state of the inverter is determined based on the target driving parameters.

3. The method according to claim 2, characterized in that, Determining the operating state of the inverter based on the target drive parameters includes: If the target drive parameter is greater than the threshold, the inverter is determined to be in an abnormal operating state. If the target drive parameter is not greater than the threshold, then the inverter is determined to be in normal working condition.

4. The method according to claim 3, characterized in that, The alarm module includes indicator lights; If the target drive parameter is greater than the threshold, after determining that the inverter is in an abnormal operating state, the process further includes: The display parameters of the indicator light are controlled to correspond to the target driving parameters.

5. The method according to claim 3, characterized in that, The alarm module includes a buzzer; If the target drive parameter is greater than the threshold, after determining that the inverter is in an abnormal operating state, the process further includes: The audio parameters of the buzzer are controlled to correspond to the target driving parameters.

6. The method according to claim 1, characterized in that, After determining the target fault parameters corresponding to the target drive parameters based on the correspondence between drive parameters and fault parameters, the process further includes: Based on the target fault parameters, an anomaly log is generated and stored in a designated storage area.

7. The method according to claim 1, characterized in that, After determining the target fault parameters corresponding to the target drive parameters based on the correspondence between drive parameters and fault parameters, the process further includes: The target fault parameters are sent to the cloud so that the cloud can provide processing information corresponding to the target fault parameters; the processing information includes the fault solution for the inverter. The processing information is displayed.

8. An inverter alarm device, characterized in that, include: The signal acquisition unit is used to acquire the drive signal sent by the inverter to the alarm module; The alarm module can indicate the operating status of the inverter through the drive signal; the drive signal is generated by the inverter when a fault occurs, using the fault parameters determined by self-test and the corresponding drive parameters. A signal detection unit is used to detect the driving signal to obtain the target driving parameters; The fault determination unit is used to determine the target fault parameter corresponding to the target driving parameter based on the correspondence between the driving parameter and the fault parameter. The fault parameters are used to indicate the cause of the fault that causes the inverter to malfunction; the drive parameters include the duty cycle of the voltage signal; in the correspondence, the fault cause corresponding to a duty cycle of A% is an abnormal ACC enable signal, the fault cause corresponding to a duty cycle of B% is an abnormal input power supply, the fault cause corresponding to a duty cycle of C% is an abnormal temperature, the fault cause corresponding to a duty cycle of D% is an abnormal load, the fault cause corresponding to a duty cycle of E% is an output short circuit protection, and the fault cause corresponding to a duty cycle of F% is an output leakage protection, where A, B, C, D, E, and F are preset calibration values; The fault display unit is used to display the target fault parameters.

9. A storage medium, characterized in that, The storage medium includes a stored program, wherein the program is executed by a processor to perform the inverter alarm method according to any one of claims 1-7.

10. A vehicle, characterized in that, include: The inverter is used to send a drive signal to the alarm module when a fault occurs, by using the fault parameters determined by self-test and the corresponding drive parameters to generate a drive signal. The alarm module can indicate the operating status of the inverter through the drive signal; The controller is used to detect the drive signal, obtain the target drive parameters, and determine the target fault parameters corresponding to the target drive parameters based on the correspondence between the drive parameters and fault parameters. The fault parameters are used to indicate the fault cause that leads to the inverter malfunction. The drive parameters include the duty cycle of the voltage signal. In the correspondence, the fault cause corresponding to a duty cycle of A% is an abnormal ACC enable signal, the fault cause corresponding to a duty cycle of B% is an abnormal input power supply, the fault cause corresponding to a duty cycle of C% is an abnormal temperature, the fault cause corresponding to a duty cycle of D% is an abnormal load, the fault cause corresponding to a duty cycle of E% is an output short circuit protection, and the fault cause corresponding to a duty cycle of F% is an output leakage protection, where A, B, C, D, E, and F are preset calibration values. A display for showing the target fault parameters.

Citation Information

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