A method, device, vehicle and storage medium for detecting abnormal noise of a steering column assembly

Abstract

The present application relates to a kind of steering column assembly abnormal sound detection method, device, vehicle and storage medium, belong to vehicle technical field, comprising: receiving the first acceleration signal set sent by multiple acceleration sensors arranged on multiple components of steering column assembly;First acceleration signal set is filtered, it is judged whether the peak value of all acceleration signals in first acceleration signal set is less than first calibration threshold;In the peak value of any acceleration signal is greater than or equal to first calibration threshold, and the case where no exception is recorded in this ignition cycle, record exception once;In the case where the number of continuous records of exception exceeds preset number, send abnormal sound prompt signal.The present application embodiment can completely cover the scene of driver daily use vehicle by real-time acquisition acceleration signal on steering column assembly, in the case where the number of continuous records of exception exceeds preset number, only then consider that abnormal sound condition occurs, avoid misjudgment because of special road scene.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and specifically to a method, apparatus, vehicle, and storage medium for detecting abnormal noises in a steering column assembly. Background Technology

[0002] Vehicle noise problems are characterized by difficulties in reproducing the fault, hidden sources of noise, and limited verification methods, making them a persistent pain point in the automotive industry. The steering column assembly, located directly in front of the driver and connecting the steering wheel and steering gear, provides steering assistance. Unusual noises during driving can easily cause driver concern. Therefore, timely and accurate inspection of the steering column assembly is crucial to alert the driver or maintenance personnel and guide them in repairs.

[0003] In the existing technology, multiple vibration sensors can be set up to receive the vibration signals generated by the vibration sensors, and abnormal vibration signals can be used to detect and judge the abnormal noise components.

[0004] However, simply relying on an abnormal vibration signal to detect and judge the source of noise can easily lead to misjudgment due to special road surface conditions. Summary of the Invention

[0005] The purpose of this application is to provide a method, device, vehicle, and storage medium for detecting abnormal noise in a steering column assembly, which can solve the problem that simply detecting and judging the source of abnormal noise based on a certain abnormal vibration signal can easily lead to misjudgment due to special road surface scenarios.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] In a first aspect, embodiments of this application provide a method for detecting abnormal noise in a steering column assembly, including:

[0008] Receives a first set of acceleration signals from multiple acceleration sensors located on multiple components of the steering column assembly;

[0009] The first acceleration signal set is filtered to determine whether the peak value of all acceleration signals in the first acceleration signal set is less than a first calibration threshold.

[0010] If the peak value of any acceleration signal is greater than or equal to the first calibration threshold, and no abnormality is recorded in the current ignition cycle, an abnormality is recorded.

[0011] If the number of consecutive abnormal records exceeds a preset number, an abnormal sound alert signal will be sent.

[0012] Secondly, embodiments of this application provide a steering column assembly abnormal noise detection device, including:

[0013] The receiving module is used to receive a first set of acceleration signals sent by multiple acceleration sensors mounted on multiple components of the steering column assembly;

[0014] The judgment module is used to filter the first acceleration signal set and determine whether the peak value of all acceleration signals in the first acceleration signal set is less than a first calibration threshold.

[0015] The recording module is used to record an anomaly if the peak value of any acceleration signal is greater than or equal to the first calibration threshold and no anomaly is recorded in the current ignition cycle.

[0016] The sending module is used to send an abnormal sound reminder signal when the number of consecutive abnormal records exceeds a preset number.

[0017] Thirdly, embodiments of this application provide a vehicle including a processor and a memory, the memory storing programs or instructions executable on the processor, the programs or instructions, when executed by the processor, implementing the steps of the method described in the first aspect.

[0018] Fourthly, embodiments of this application provide a readable storage medium on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method described in the first aspect.

[0019] Fifthly, embodiments of this application provide a chip, the chip including a processor and a communication interface, the communication interface being coupled to the processor, the processor being used to run programs or instructions to implement the method as described in the first aspect.

[0020] In a sixth aspect, embodiments of this application provide a computer program product stored in a storage medium, which is executed by at least one processor to implement the method described in the first aspect.

[0021] Compared with the prior art, the embodiments of this application can fully cover the daily driving scenarios of drivers by collecting acceleration signals on the steering column assembly in real time. Only when the number of consecutive abnormal records exceeds a preset number is it considered that an abnormal noise has occurred, avoiding misjudgment caused by special road conditions. After the abnormal noise is confirmed, the driver can be reminded immediately, reducing driving anxiety and greatly improving driving safety. Attached Figure Description

[0022] Figure 1 This is a flowchart of a method for detecting abnormal noise in a steering column assembly provided in an embodiment of this application;

[0023] Figure 2This is a flowchart of another method for detecting abnormal noise in a steering column assembly provided in an embodiment of this application;

[0024] Figure 3 This is a flowchart of another method for detecting abnormal noise in a steering column assembly provided in an embodiment of this application;

[0025] Figure 4 This is a flowchart illustrating a method for detecting abnormal noise in a steering column assembly provided in an embodiment of this application;

[0026] Figure 5 This is a system schematic diagram of a steering column assembly abnormal noise detection method provided in an embodiment of this application;

[0027] Figure 6 This is a schematic diagram of the acceleration sensor arrangement for a steering column assembly abnormal noise detection method provided in an embodiment of this application;

[0028] Figure 7 This is a structural block diagram of a steering column assembly abnormal noise detection device provided in an embodiment of this application;

[0029] Figure 8 This is a structural block diagram of an electronic device included in a vehicle according to an embodiment of this application;

[0030] Figure 9 This is a schematic diagram of the hardware structure of an electronic device included in a vehicle, as provided in an embodiment of this application. Detailed Implementation

[0031] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0032] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0033] The following description, in conjunction with the accompanying drawings, details the steering column assembly noise detection method, device, vehicle, and storage medium provided in this application through specific embodiments and application scenarios.

[0034] Figure 1 This is a flowchart of a method for detecting abnormal noise in a steering column assembly, provided in an embodiment of this application. The method includes:

[0035] Step 101: Receive a first set of acceleration signals from multiple acceleration sensors located on multiple components of the steering column assembly.

[0036] In the embodiments of this application, the acceleration sensor may include a piezoelectric acceleration sensor. Of course, the above are only specific examples, and in actual use, the acceleration sensor may also include other types of acceleration sensors, which will not be elaborated here.

[0037] In this embodiment of the application, if the vehicle speed is invalid and the steering column power assist function is abnormal, then the abnormal noise from the steering column assembly cannot be detected normally. Therefore, if Figure 4 As shown, before executing step 101, it is necessary to check whether the vehicle speed is valid. If the vehicle speed is invalid, it is necessary to check whether the vehicle is powered off. If the vehicle is powered off, step 101 is not executed. If the vehicle is not powered off, the vehicle speed is checked again. If the vehicle speed is valid, step 101 is executed.

[0038] In the embodiments of this application, such as Figure 5 The data acquisition module shown collects a first set of acceleration signals from multiple acceleration sensors mounted on multiple components of the steering column assembly, and sends the first set of acceleration signals to the data processing module.

[0039] Specifically, in the embodiments of this application, such as Figure 6 As shown, the system receives a first set of acceleration signals from the acceleration sensor 11 mounted on the power steering motor housing of the steering column assembly, the acceleration sensor 12 mounted on the reduction gear assembly housing, and the acceleration sensor 13 mounted on the angle adjustment bracket body. Compared to the prior art, this embodiment of the application places acceleration sensors on three components of the steering column assembly prone to abnormal noise, which is beneficial for accurately detecting abnormal noise from the steering column assembly.

[0040] Specifically, in this embodiment, a first set of acceleration signals is received from multiple triaxial acceleration sensors with the same detection direction, which are disposed on multiple components of the steering column assembly. Compared with the prior art, this embodiment can acquire acceleration signals from any one, any two, or all three detection directions of the triaxial acceleration sensors on multiple components of the steering column assembly. This allows for customization of the detection direction according to detection requirements, which is beneficial for accurately detecting abnormal noises from the steering column assembly.

[0041] Step 102: Filter the first acceleration signal set and determine whether the peak value of all acceleration signals in the first acceleration signal set is less than the first calibration threshold.

[0042] In the embodiments of this application, such as Figure 5 The filtering unit of the data processing module shown filters the first acceleration signal set. Its main purpose is to filter out environmental interference noise and suppress or attenuate other frequency components. Environmental interference noise can include passenger conversations in the cockpit, vibrations of vehicle components during driving, etc. Suppressing or attenuating other frequency components is necessary because the acceleration signal collected by the sensor has a wide frequency range. Therefore, other frequencies can be filtered out, and only acceleration signals within a specific frequency range, such as 1 kHz to 2 kHz, can be collected for easier subsequent processing. Of course, the above is just a specific example. In actual use, environmental interference noise and the frequency range of the acceleration signal can include other elements, which will not be elaborated here.

[0043] In this embodiment of the application, the first calibration threshold is a built-in threshold such as... Figure 5 The acceleration values ​​of the data storage units shown are set by the developers based on the overall vehicle condition and the road conditions that users may encounter during daily driving, after data collection, fitting, and analysis. When a triaxial acceleration sensor is used, the first calibration threshold for the three detection directions can be different acceleration values.

[0044] Step 103: If the peak value of any acceleration signal is greater than or equal to the first calibration threshold and no abnormality is recorded in this ignition cycle, record an abnormality.

[0045] In this embodiment of the application, one ignition cycle refers to the process from ignition to shutdown by the driver, which is generally the process of the driver using the vehicle once. Only one anomaly is recorded per ignition cycle, and the component containing the corresponding acceleration sensor is also recorded along with the anomaly. For example... Figure 5 The data analysis unit in the data processing module shown analyzes the peak value of the acceleration signal and the magnitude of the first calibration threshold. If the peak value of all acceleration signals is less than the first calibration threshold, step 101 is executed.

[0046] Step 104: If the number of consecutive abnormal records exceeds a preset number, send an abnormal sound alert signal.

[0047] In the embodiments of this application, such as Figure 5 The data storage unit shown stores the number of consecutive abnormal records. When the number of consecutive abnormal records exceeds the preset number, an abnormal noise reminder signal is sent to the instrument module through the gateway module according to the decision of the decision unit.

[0048] Compared with the prior art, the embodiments of this application can fully cover the daily driving scenarios of drivers by collecting acceleration signals on the steering column assembly in real time. Only when the number of consecutive abnormal records exceeds a preset number is it considered that an abnormal noise has occurred, avoiding misjudgment caused by special road conditions. After the abnormal noise is confirmed, the driver can be reminded immediately, reducing driving anxiety and greatly improving driving safety.

[0049] Figure 2 This is a flowchart of another steering column assembly abnormal noise detection method provided in this application embodiment. Figure 1 The methods provided for detecting abnormal noises in the steering column assembly are basically the same; the difference lies in... Figure 1 Step 102 of the provided steering column assembly abnormal noise detection method includes:

[0050] Step 1021: Using a preset time period as a cycle, determine whether the average fluctuation difference between adjacent cycles of all acceleration signals in the first acceleration signal set is less than the second calibration threshold.

[0051] In this embodiment, the duration of one cycle can be set to 5 seconds. The midpoint between the peak and trough values ​​of each acceleration signal within the complete waveform of adjacent cycles is taken, and the ratio of the difference between the midpoints of adjacent cycles to the midpoint of the previous cycle is calculated; this is the average fluctuation difference between adjacent cycles. The second calibration threshold can be a percentage, such as 40%, set by the developers based on the overall vehicle status and the road conditions that users might encounter during daily driving, after data collection, fitting, and analysis.

[0052] Specifically, all acceleration signals in the first acceleration signal set are sorted from largest to smallest based on the difference between their peaks and troughs to obtain a second acceleration signal set. Using a preset time period as a cycle, it is sequentially determined whether the average fluctuation difference between adjacent cycles of all acceleration signals in the second acceleration signal set is less than a second calibration threshold. Compared to existing technologies, this embodiment allows for the comparison of acceleration signals with larger peak-to-trough differences (i.e., those more likely to be abnormal) with the second calibration threshold through sorting, thereby enabling faster identification of abnormal acceleration signals and improving processing speed.

[0053] Step 1022: If the average fluctuation difference of any acceleration signal is greater than or equal to the second calibration threshold, the acceleration signal is filtered to determine whether the peak value of the acceleration signal is less than the first calibration threshold.

[0054] In the embodiments of this application, such as Figure 4 As shown, when the second calibration threshold is set to 40%, if the average fluctuation difference of any acceleration signal is greater than or equal to 40%, it is determined whether the peak value of this abnormal acceleration signal is less than the first calibration threshold; if the average fluctuation difference of any acceleration signal is greater than or equal to 40%, step 101 is continued.

[0055] Compared with the prior art, the embodiments of this application achieve... Figure 1 Based on the beneficial effects of the method, all acceleration signals are pre-screened, and acceleration signals exceeding the second calibration threshold are selected to enter step 103. This allows normal acceleration signals to be filtered in advance, reducing the amount of data processed in step 3 and improving the processing speed.

[0056] Figure 3 This is a flowchart of another steering column assembly abnormal noise detection method provided in the embodiments of this application. This steering column assembly abnormal noise detection method is similar to... Figure 1 The methods provided for detecting abnormal noises in the steering column assembly are basically the same; the difference lies in... Figure 1 Step 104 of the provided steering column assembly abnormal noise detection method includes:

[0057] Step 304: If the number of consecutive abnormal records is greater than or equal to the first preset number and less than the second preset number, send a level 1 warning signal; and / or, if the number of consecutive abnormal records is greater than or equal to the second preset number, send a level 2 warning signal and record the fault code.

[0058] In the embodiments of this application, such as Figure 4As shown, the first preset number of times can be set to 3 times, and the second preset number of times can be set to 5 times. If the number of consecutive abnormal records is less than 3 (i.e., 1 or 2 times), the accelerometer sensor corresponding to the abnormal acceleration signal is considered normal, and step 101 continues. If the number of consecutive abnormal records is greater than or equal to 3 but less than 5 (i.e., 3 or 4 times), the component containing the accelerometer sensor corresponding to the abnormal acceleration signal may have an abnormal noise problem. A first-level warning signal is sent to the instrument module through the gateway module. The instrument module receives the first-level warning signal and issues a text alarm, reminding the driver that the component containing the accelerometer sensor corresponding to the abnormal acceleration signal on the steering column assembly may have an abnormal noise problem. The driver should observe carefully, and then step 101 continues. If the number of consecutive abnormal records is greater than or equal to 5, the component containing the accelerometer sensor corresponding to the abnormal acceleration signal has an abnormal noise problem. A fault code is recorded, and a second-level warning signal is sent to the instrument module through the gateway module. The instrument module receives the second-level warning signal and issues a text alarm, while simultaneously notifying the audio-visual module to issue an audible alarm, reminding the driver that the component containing the accelerometer sensor corresponding to the abnormal acceleration signal on the steering column assembly may have an abnormal noise problem. The driver should have the vehicle repaired at an authorized service center. The notification time can be customized by the user, and the user can manually choose to turn it off after the notification.

[0059] Specifically, in this embodiment, when the number of consecutive abnormal records is greater than or equal to the second preset number, a secondary warning signal is sent and a fault code is recorded. After that, the maintenance personnel can know the component on the steering column assembly where the abnormal noise occurs based on the fault code, and then perform corresponding repairs on that component. After the repair, the maintenance personnel can manually clear the fault code, or the data storage module can automatically clear the fault code if no abnormality is recorded within 50 ignition cycles after the repair.

[0060] Compared with the prior art, the embodiments of this application achieve... Figure 1 Based on the beneficial effects of the method, by setting a first-level warning signal and a second-level warning signal with progressively increasing safety levels, different reminders can be given to users in different situations, better handling various situations of abnormal noise detection in the steering column assembly, and guiding maintenance personnel to quickly repair abnormal noise components through fault codes, greatly reducing misdiagnosis in maintenance, reducing driver waiting time, and saving replacement costs for manufacturers or drivers.

[0061] The steering column assembly abnormal noise detection method provided in this application embodiment can be executed by a steering column assembly abnormal noise detection device. This application embodiment uses the steering column assembly abnormal noise detection device executing the steering column assembly abnormal noise detection method as an example to illustrate the steering column assembly abnormal noise detection device provided in this application embodiment.

[0062] Figure 7 This is a structural block diagram of a steering column assembly noise detection device provided in an embodiment of this application. The steering column assembly noise detection device includes:

[0063] The receiving module 701 is used to receive a first set of acceleration signals sent by multiple acceleration sensors disposed on multiple components of the steering column assembly.

[0064] The judgment module 702 is used to filter the first acceleration signal set and determine whether the peak value of all acceleration signals in the first acceleration signal set is less than the first calibration threshold.

[0065] The recording module 703 is used to record an anomaly if the peak value of any acceleration signal is greater than or equal to a first calibration threshold and no anomaly is recorded in the current ignition cycle.

[0066] The sending module 704 is used to send an abnormal sound reminder signal when the number of consecutive abnormal records exceeds a preset number.

[0067] Compared with the prior art, the embodiments of this application can fully cover the daily driving scenarios of drivers by collecting acceleration signals on the steering column assembly in real time. Only when the number of consecutive abnormal records exceeds a preset number is it considered that an abnormal noise has occurred, avoiding misjudgment caused by special road conditions. After the abnormal noise is confirmed, the driver can be reminded immediately, reducing driving anxiety and greatly improving driving safety.

[0068] The steering column assembly noise detection device in this application embodiment can be an electronic device or a component of an electronic device, such as an integrated circuit or a chip. The electronic device can be a terminal or other devices besides a terminal. For example, the electronic device can be a mobile phone, tablet computer, laptop computer, PDA, in-vehicle electronic device, mobile internet device (MID), augmented reality (AR) / virtual reality (VR) device, robot, wearable device, ultra-mobile personal computer (UMPC), netbook, or personal digital assistant (PDA), etc. It can also be network attached storage (NAS), personal computer (PC), television (TV), ATM, or self-service machine, etc. This application embodiment does not specifically limit the specific type of device.

[0069] The steering column assembly noise detection device in this embodiment can be a device with an operating system. This operating system can be Android, iOS, or other possible operating systems; this embodiment does not impose any specific limitations.

[0070] Optionally, such as Figure 8 As shown, this application embodiment also provides an electronic device included in a vehicle, including a processor 801 and a memory 802. The memory 802 stores a program or instructions that can run on the processor 801. When the program or instructions are executed by the processor 801, they implement the various steps of the above-described steering column assembly abnormal noise detection method embodiment and can achieve the same technical effect. To avoid repetition, they will not be described again here.

[0071] It should be noted that the electronic devices in the embodiments of this application include the mobile electronic devices and non-mobile electronic devices described above. Figure 9 A schematic diagram of the hardware structure of an electronic device included in a vehicle to implement an embodiment of this application.

[0072] The electronic device 900 includes, but is not limited to, components such as: radio frequency unit 901, network module 902, audio output unit 903, input unit 904, sensor 905, display unit 906, user input unit 907, interface unit 908, memory 909, and processor 910.

[0073] Those skilled in the art will understand that the electronic device 900 may also include a power supply (such as a battery) for supplying power to various components. The power supply may be logically connected to the processor 910 through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system. Figure 9 The electronic device structure shown does not constitute a limitation on the electronic device. The electronic device may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0074] It should be understood that, in this embodiment, the input unit 904 may include a graphics processing unit (GPU) 9041 and a microphone 9042. The GPU 9041 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 906 may include a display panel 9061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 907 includes at least one of a touch panel 9071 and other input devices 9072. The touch panel 9071 is also called a touch screen. The touch panel 9071 may include a touch detection device and a touch controller. Other input devices 9072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, power buttons, etc.), trackballs, mice, and joysticks, which will not be described in detail here.

[0075] The memory 909 can be used to store software programs and various data. The memory 909 may primarily include a first storage area for storing programs or instructions and a second storage area for storing data. The first storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 909 may include volatile memory or non-volatile memory, or both. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus RAM (DRRAM). The memory 909 in the embodiments of this application includes, but is not limited to, these and any other suitable types of memory.

[0076] Processor 910 may include one or more processing units; optionally, processor 910 integrates an application processor and a modem processor, wherein the application processor mainly handles operations involving the operating system, user interface, and applications, and the modem processor mainly handles wireless communication signals, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 910.

[0077] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described steering column assembly abnormal noise detection method embodiment and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0078] The processor is the processor in the electronic device described in the above embodiments. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk.

[0079] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface and the processor are coupled. The processor is used to run programs or instructions to implement the various processes of the above-described steering column assembly abnormal noise detection method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0080] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0081] This application provides a computer program product, which is stored in a storage medium and executed by at least one processor to implement the various processes of the above-described steering column assembly abnormal noise detection method embodiment, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0082] It should be noted that, in this document, 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 limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0083] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a computer software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal (which may be a mobile phone, computer, server, or network device, etc.) to execute the methods described in the various embodiments of this application.

[0084] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A method for detecting abnormal noise in a steering column assembly, characterized in that, include: Receives a first set of acceleration signals from multiple acceleration sensors located on multiple components of the steering column assembly; The first acceleration signal set is filtered to determine whether the peak value of all acceleration signals in the first acceleration signal set is less than a first calibration threshold. If the peak value of any of the acceleration signals is greater than or equal to the first calibration threshold, and no abnormality is recorded in the current ignition cycle, an abnormality is recorded. If the number of consecutive abnormal records exceeds a preset number, an abnormal sound alert signal will be sent. The step of filtering the first set of acceleration signals and determining whether the peak value of any acceleration signal in the first set of acceleration signals is less than a first calibrated threshold includes: Using a preset time period as a cycle, determine whether the average fluctuation difference between adjacent cycles of all acceleration signals in the first acceleration signal set is less than a second calibration threshold. If the average fluctuation difference of any acceleration signal is greater than or equal to the second calibration threshold, the acceleration signal is filtered to determine whether the peak value of the acceleration signal is less than the first calibration threshold. The step of determining whether the average fluctuation difference between adjacent periods of all acceleration signals in the first acceleration signal set is less than a second calibration threshold, using a preset time period as a cycle, includes: Sort all acceleration signals in the first acceleration signal set from largest to smallest according to the difference between peaks and troughs to obtain the second acceleration signal set; Using a preset time period as a cycle, it is sequentially determined whether the average fluctuation difference between adjacent cycles of all acceleration signals in the second acceleration signal set is less than a second calibration threshold. The step of sending an abnormal sound alert signal when the number of consecutive abnormal records exceeds a preset number includes: If the number of consecutive abnormal records is greater than or equal to a first preset number and less than a second preset number, a Level 1 warning signal is sent; and / or, If the number of consecutive abnormal records is greater than or equal to the second preset number, a level two warning signal is sent and a fault code is recorded.

2. The method according to claim 1, characterized in that, The first set of acceleration signals received from multiple acceleration sensors mounted on multiple components of the steering column assembly includes: It receives a first set of acceleration signals from three acceleration sensors located on the power assist motor housing, the reduction gear assembly housing, and the angle adjustment bracket body of the steering column assembly.

3. The method according to claim 1, characterized in that, The first set of acceleration signals received from multiple acceleration sensors mounted on multiple components of the steering column assembly includes: It receives a first set of acceleration signals from multiple triaxial acceleration sensors with the same detection direction, which are set on multiple components of the steering column assembly.

4. The method according to claim 1, characterized in that, After sending a secondary warning signal and recording the fault code when the number of consecutive abnormal records is greater than or equal to a second preset number, the method further includes: If no abnormality is recorded within 50 ignition cycles, clear the fault code.

5. A device for detecting abnormal noise in a steering column assembly, applied to a vehicle, characterized in that, include: The receiving module is used to receive a first set of acceleration signals sent by multiple acceleration sensors disposed on multiple components of the steering column assembly; The judgment module is used to filter the first acceleration signal set and determine whether the peak value of all acceleration signals in the first acceleration signal set is less than a first calibration threshold. The recording module is used to record an anomaly if the peak value of any of the acceleration signals is greater than or equal to the first calibration threshold and no anomaly is recorded in the current ignition cycle. The sending module is used to send an abnormal sound reminder signal when the number of consecutive abnormal records exceeds a preset number; The step of filtering the first set of acceleration signals and determining whether the peak value of any acceleration signal in the first set of acceleration signals is less than a first calibrated threshold includes: Using a preset time period as a cycle, determine whether the average fluctuation difference between adjacent cycles of all acceleration signals in the first acceleration signal set is less than a second calibration threshold. If the average fluctuation difference of any acceleration signal is greater than or equal to the second calibration threshold, the acceleration signal is filtered to determine whether the peak value of the acceleration signal is less than the first calibration threshold. The step of determining whether the average fluctuation difference between adjacent periods of all acceleration signals in the first acceleration signal set is less than a second calibration threshold, using a preset time period as a cycle, includes: Sort all acceleration signals in the first acceleration signal set from largest to smallest according to the difference between peaks and troughs to obtain the second acceleration signal set; Using a preset time period as a cycle, it is sequentially determined whether the average fluctuation difference between adjacent cycles of all acceleration signals in the second acceleration signal set is less than a second calibration threshold. The step of sending an abnormal sound alert signal when the number of consecutive abnormal records exceeds a preset number includes: If the number of consecutive abnormal records is greater than or equal to a first preset number and less than a second preset number, a Level 1 warning signal is sent; and / or, If the number of consecutive abnormal records is greater than or equal to the second preset number, a level two warning signal is sent and a fault code is recorded.

6. A vehicle, characterized in that, It includes a processor and a memory, the memory storing programs or instructions that can run on the processor, the programs or instructions being executed by the processor to implement the steps of the steering column assembly abnormal noise detection method as described in any one of claims 1-4.

7. A readable storage medium, characterized in that, The readable storage medium stores a program or instructions that, when executed by a processor, implement the steps of the steering column assembly abnormal noise detection method as described in any one of claims 1-4.

Images