AMT transmission system, intermediate shaft sensor fault diagnosis method and electronic equipment

Abstract

The application discloses an AMT transmission system, an intermediate shaft sensor fault diagnosis method and electronic equipment, and relates to the field of fault diagnosis.The system comprises a power module and a sensing module.The power module is used for transmitting engine power to a vehicle load.The sensing module is used for detecting the running state of the AMT transmission system which transmits engine power to the vehicle load.The system further comprises an AMT control module which is used for controlling gear shifting and clutch connection of the AMT transmission system.The sensing module sends information about the running state of the AMT transmission system to the AMT control module.The AMT control module controls gear shifting and clutch connection of the AMT transmission system based on a preset control strategy, and transmits engine power to the vehicle load.Through the above scheme, the fault state of the intermediate shaft sensor is regularly scanned, the poor work of the intermediate shaft sensor is found as early as possible, and the intermediate shaft sensor is repaired and replaced as early as possible, so that the risk is reduced.

Description

Technical Field

[0001] The present application relates to the field of fault diagnosis, and in particular to an AMT transmission system, an intermediate shaft sensor fault diagnosis method, an intermediate shaft sensor fault diagnosis device, an electronic device, a storage medium and a vehicle. Background Art

[0002] AMT transmission shifting relies on precise sensor feedback to achieve smooth gear changes. The intermediate shaft, a crucial component, is typically equipped with a dedicated intermediate shaft sensor to detect its rotational state. However, if an intermediate shaft sensor malfunctions, it may not immediately lose data transmission capability and continue to feed data to the relevant control module, causing the control module to mishandle shifting. This malfunctioning AMT transmission system can pose a greater risk to vehicle operation.

[0003] Therefore, a fault diagnosis scheme for the intermediate shaft sensor based on the AMT transmission system is needed.

[0004] In the neutral state, the malfunctioning state of the intermediate shaft sensor under the AMT transmission system is identified as soon as possible to prevent the abnormal situation from further deteriorating. Summary of the Invention

[0005] The purpose of the present invention is to provide an AMT transmission system, an intermediate shaft sensor fault diagnosis method, an intermediate shaft sensor fault diagnosis device, an electronic device, a storage medium and a vehicle, which at least solve the problem of not being able to detect malfunction of the intermediate shaft sensor in time and solve one of the technical problems of not being able to identify malfunction of the intermediate shaft sensor in the neutral state.

[0006] The present invention provides the following solutions:

[0007] According to one aspect of the present invention, there is provided an AMT transmission system, the AMT transmission system comprising: a power module, a sensing module;

[0008] The power module is used to transmit engine power to the vehicle load;

[0009] The sensing module is used to detect the operating status of the AMT transmission system that transmits engine power to the vehicle load;

[0010] Also included: an AMT control module for controlling gear shifting and clutch connection of the AMT transmission system;

[0011] The sensing module sends information about the operating status of the AMT transmission system to the AMT control module;

[0012] The AMT control module controls the gear shifting and clutch connection of the AMT transmission system based on a preset control strategy to transfer engine power to the vehicle load.

[0013] Furthermore, the power module includes: a front auxiliary box module, a rear auxiliary box module and a gear box module;

[0014] The input shaft of the front auxiliary box module is connected to the engine output shaft through a clutch;

[0015] The drive shaft of the rear auxiliary box module is used to connect to the rear axle of the vehicle and drive the wheels to rotate;

[0016] The gear box module is provided with a gear system for transmitting the engine power under the control of the AMT transmission system to the vehicle load;

[0017] The gear box module is provided with a gear system including an intermediate shaft;

[0018] The front auxiliary box module is meshedly connected to the gear box module via an intermediate shaft, and the gear box module is meshedly connected to the rear auxiliary box module, and is connected to the rear axle of the vehicle via a drive shaft.

[0019] Furthermore, the sensing module includes: an intermediate shaft sensor and a drive shaft sensor;

[0020] The intermediate shaft sensor is used to collect information on the rotation state of the intermediate shaft;

[0021] The drive shaft sensor is used to collect information on the rotation state of the drive shaft;

[0022] The states of the clutch engagement and gear shifting actions are monitored according to the rotation states of the engine output shaft and the intermediate shaft.

[0023] According to two aspects of the present invention, a method for diagnosing an intermediate shaft sensor fault is provided. The method is based on an AMT transmission system and includes:

[0024] Obtain engine and AMT transmission system speed information;

[0025] Based on the speed information of the engine and the AMT transmission system, the clutch disengagement action is controlled to coordinate the gear shifting action;

[0026] wherein, determining whether the gear state is a neutral state;

[0027] If not, then continue scanning the gear status according to a preset first time period;

[0028] If yes, then start the intermediate shaft sensor fault diagnosis;

[0029] According to the above-mentioned initiation of intermediate shaft sensor fault diagnosis, information on the clutch position state is obtained.

[0030] Furthermore, the information of obtaining the clutch position state includes:

[0031] Determine whether the clutch position state is in an engaged state;

[0032] If not, then continuously scanning the clutch position state according to a preset second time period;

[0033] If yes, then obtain the engine speed value Ne;

[0034] It also includes determining whether the intermediate shaft speed sensor is in a data readable state;

[0035] If it is readable, then read the intermediate shaft speed data through the intermediate shaft speed sensor, including obtaining the intermediate shaft speed value NI;

[0036] The method further includes obtaining a transmission ratio value R of the front auxiliary box;

[0037] According to the intermediate shaft speed value NI and the transmission ratio value R of the front auxiliary box, the calculated value of the front auxiliary box input shaft speed is obtained;

[0038] The calculated value of the front auxiliary box input shaft speed includes: Nin=NI*R.

[0039] Furthermore, it also includes:

[0040] Obtaining a difference Nc between the engine speed value and the calculated value of the front auxiliary box input shaft speed according to the engine speed value Ne and the calculated value of the front auxiliary box input shaft speed Nin;

[0041] The difference between the engine speed value and the calculated value of the front auxiliary box input shaft speed includes: Nc=Ne-Nin;

[0042] wherein, a preset speed redundancy difference Ny of the difference between the engine speed value and the calculated speed value of the front auxiliary box input shaft is obtained;

[0043] determining whether the intermediate shaft sensor is diagnosed as being in a normal state based on a difference Nc between the engine speed value and the calculated speed value of the front auxiliary box input shaft and the preset speed redundancy difference Ny;

[0044] The determining whether the intermediate shaft sensor is diagnosed as being in a fault-free state includes:

[0045] If the difference Nc between the engine speed value and the calculated speed value of the front auxiliary box input shaft is smaller than the preset speed redundancy difference Ny, the intermediate shaft sensor is diagnosed as being in a non-fault state.

[0046] Furthermore, the intermediate shaft sensor is diagnosed as being in a non-fault state including:

[0047] According to the intermediate shaft sensor currently being diagnosed as being in a fault-free state, obtaining timer timing control information;

[0048] Comparing the difference Nc between the engine speed value and the calculated value of the front auxiliary box input shaft speed with the preset speed redundancy difference Ny;

[0049] If the difference Nc between the engine speed value and the calculated speed value of the front auxiliary box input shaft is greater than or equal to the preset speed redundancy difference Ny, the timer is controlled to start timing according to the timer timing control information;

[0050] Start timing according to the control timer, set the time threshold t1, and record the delay time t;

[0051] determining again whether the intermediate shaft sensor is diagnosed as being in a non-fault state, based on the delay time t being greater than or equal to the time threshold t1;

[0052] If the difference Nc between the engine speed value and the calculated speed value of the front auxiliary box input shaft is smaller than the preset speed redundancy difference Ny, the intermediate shaft sensor is diagnosed as being in a non-fault state.

[0053] Furthermore, the determining whether the intermediate shaft sensor is diagnosed as being in a fault-free state further includes:

[0054] If the difference Nc between the engine speed value and the input shaft speed value is greater than or equal to the preset speed difference Ny between the engine speed value and the input shaft speed value, then obtaining the timer timing control information;

[0055] Start timing according to the control timer, set the time threshold t1, and record the delay time t;

[0056] determining again whether the intermediate shaft sensor is diagnosed as being in a non-fault state, based on the delay time t being greater than or equal to the time threshold t1;

[0057] If the difference Nc between the engine speed value and the input shaft speed value is greater than or equal to the preset speed difference Ny between the engine speed value and the input shaft speed value, the intermediate shaft sensor is diagnosed as being in a faulty state.

[0058] According to three aspects of the present invention, there is provided an intermediate shaft sensor fault diagnosis device, the intermediate shaft sensor fault diagnosis device comprising:

[0059] Information acquisition module, used to obtain the speed information of the engine and AMT transmission system;

[0060] an action control module for controlling the clutch engagement and disengagement based on the speed information of the engine and the AMT transmission system, and coordinating the gear shifting with the gear change action;

[0061] The gear status module is used to determine whether the gear status is neutral;

[0062] a gear scanning module, configured to, if yes, continue scanning the gear status according to a preset first time period;

[0063] Start the diagnostic module, and if yes, start the intermediate shaft sensor fault diagnosis;

[0064] The clutch information module is used to obtain clutch position status information based on the startup intermediate shaft sensor fault diagnosis.

[0065] According to four aspects of the present invention, there is provided an electronic device, comprising: a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other via the communication bus;

[0066] A computer program is stored in the memory, and when the computer program is executed by the processor, the processor is caused to perform the steps of the intermediate shaft sensor fault diagnosis method.

[0067] According to five aspects of the present invention, a computer-readable storage medium is provided, comprising: a computer program that can be executed by an electronic device is stored therein, and when the computer program runs on the electronic device, the electronic device executes the steps of the intermediate shaft sensor fault diagnosis method.

[0068] According to a sixth aspect of the present invention, there is provided a vehicle comprising:

[0069] An electronic device for implementing the steps of the intermediate shaft sensor fault diagnosis method;

[0070] a processor, the processor running a program, and executing the steps of the intermediate shaft sensor fault diagnosis method based on data output by the electronic device when the program is running;

[0071] The storage medium is used to store a program, and when the program is running, the steps of the intermediate shaft sensor fault diagnosis method are executed for data output from the electronic device.

[0072] Through the above solution, the following beneficial technical effects are achieved:

[0073] The present application reads the intermediate shaft sensor data in the neutral state to determine whether the intermediate shaft sensor is faulty, thereby improving the existing defect that diagnosis can only be performed in the gear engaged state.

[0074] This application determines the fault status of the intermediate shaft sensor through regular scanning, detects the malfunction of the intermediate shaft sensor as early as possible, repairs and replaces it early, and reduces the risk of deterioration. BRIEF DESCRIPTION OF THE DRAWINGS

[0075] Figure 1 1 is a structural diagram of an AMT transmission system provided by one or more embodiments of the present invention.

[0076] Figure 2 This is a flow chart of a method for diagnosing an intermediate shaft sensor fault according to one or more embodiments of the present invention.

[0077] Figure 3 It is a structural diagram of an intermediate shaft sensor fault diagnosis device provided by one or more embodiments of the present invention.

[0078] Figure 4 Schematic diagram of an AMT transmission system according to a specific embodiment of the present invention.

[0079] Figure 5 It is a schematic diagram of the intermediate shaft sensor fault diagnosis process according to a specific embodiment of the present invention.

[0080] Figure 6 This is a structural block diagram of an electronic device according to one or more embodiments of the present invention, including a method for diagnosing an intermediate shaft sensor fault. DETAILED DESCRIPTION

[0081] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0082] Figure 1 1 is a structural diagram of an AMT transmission system provided by one or more embodiments of the present invention.

[0083] like Figure 1 The AMT transmission system shown includes: a power module, a sensing module;

[0084] a power module for transmitting engine power to the vehicle load;

[0085] A sensing module, used to detect the operating status of the AMT transmission system that transmits engine power to the vehicle load;

[0086] Also included: an AMT control module for controlling gear shifting and clutch connection of the AMT transmission system;

[0087] The sensing module sends information about the operating status of the AMT transmission system to the AMT control module;

[0088] The AMT control module controls the gear shifting and clutch connection of the AMT transmission system based on a preset control strategy, transferring the engine power to the vehicle load.

[0089] Specifically, the engine connects to the front auxiliary transmission module, then to the gearbox module, and finally to the rear auxiliary transmission module, outputting engine power to the vehicle load, such as the rear axle. To ensure smooth gear shifting, appropriate timing is crucial. Sensor modules, such as speed sensors and temperature sensors, monitor the operating status of the engine as it connects to the front auxiliary transmission module, the gearbox module, and finally to the rear auxiliary transmission module. This sensor information assists the AMT control module in controlling gear shifts and clutch engagement within the AMT transmission system, ensuring smooth transitions in power output.

[0090] In this embodiment, the power module includes: a front auxiliary box module, a rear auxiliary box module and a gear box module;

[0091] The input shaft of the front auxiliary box module is connected to the engine output shaft through a clutch;

[0092] The drive shaft of the rear auxiliary box module is used to connect to the rear axle of the vehicle and drive the wheels to rotate;

[0093] The gearbox module is provided with a gear system for transmitting the engine power under the control of the AMT transmission system to the vehicle load;

[0094] The gear box module is provided with a gear system including an intermediate shaft;

[0095] The front auxiliary box module is meshed and connected to the gear box module through the intermediate shaft, and the gear box module is meshed and connected to the rear auxiliary box module, and the rear axle of the vehicle is connected by the drive shaft.

[0096] Specifically, the gear system in the gearbox module controls the transmission ratio. For example, by shifting the meshing relationship between the gears, the transmission ratio from the engine output shaft to the drive shaft of the rear auxiliary gearbox module is changed. The intermediate shaft is a relatively important component, running through the transmission from the front auxiliary gearbox to the rear auxiliary gearbox, and the gear change and meshing process are closely related to it.

[0097] In this embodiment, the sensing module includes: an intermediate shaft sensor and a drive shaft sensor;

[0098] An intermediate shaft sensor is used to collect information on the rotation state of the intermediate shaft;

[0099] A drive shaft sensor, used to collect information on the rotation state of the drive shaft;

[0100] The states of the clutch engagement and gear shifting actions are monitored according to the rotation states of the engine output shaft and the intermediate shaft.

[0101] Specifically, the rotational state of the intermediate shaft corresponds to that of the drive shaft within a specific gear relationship. Gear shifting requires matching the two according to the preset gear ratio. The clutch's engagement and disengagement coordinates power output, increasing or decreasing the intermediate shaft speed, ensuring the appropriate gear ratio transition. The intermediate shaft also includes a dedicated brake to improve the efficiency of gear reduction.

[0102] Figure 2 This is a flow chart of a method for diagnosing an intermediate shaft sensor fault according to one or more embodiments of the present invention.

[0103] like Figure 2 The intermediate shaft sensor fault diagnosis method shown is based on the AMT transmission system and includes:

[0104] Step S1, obtaining the speed information of the engine and the AMT transmission system;

[0105] Step S2, based on the speed information of the engine and the AMT transmission system, controlling the clutch disengagement action and coordinating the gear shifting action;

[0106] Step S3, wherein it is determined whether the gear state is a neutral state;

[0107] Step S4: if not, continue scanning the gear status according to a preset first time period;

[0108] Step S5: If yes, then start the intermediate shaft sensor fault diagnosis;

[0109] Step S6: acquiring clutch position status information based on starting intermediate shaft sensor fault diagnosis.

[0110] Specifically, in this embodiment, intermediate shaft sensor fault diagnosis is initiated during neutral. At this point, engine power is transmitted only to the intermediate shaft via the front auxiliary transmission, without affecting other components. This allows for early detection of intermediate shaft sensor anomalies before the vehicle shifts into gear.

[0111] In this embodiment, obtaining the clutch position state information includes:

[0112] Determine whether the clutch position state is in an engaged state;

[0113] If not, then continuously scanning the clutch position state according to a preset second time period;

[0114] If yes, then obtain the engine speed value Ne;

[0115] It also includes determining whether the intermediate shaft speed sensor is in a data readable state;

[0116] If it is readable, then read the intermediate shaft speed data through the intermediate shaft speed sensor, including obtaining the intermediate shaft speed value NI;

[0117] The method further includes obtaining a transmission ratio value R of the front auxiliary box;

[0118] According to the intermediate shaft speed value NI and the transmission ratio value R of the front auxiliary box, the calculated value of the front auxiliary box input shaft speed is obtained;

[0119] The calculated value of the front auxiliary box input shaft speed includes: Nin = NI*R.

[0120] Specifically, the front auxiliary box has a fixed transmission ratio. The engine output shaft is connected to the input shaft of the front auxiliary box by a clutch. The engine speed is basically synchronized with the front auxiliary box speed. Because the intermediate shaft is meshed with the front auxiliary box, the calculated value of the front auxiliary box input shaft is obtained, which is equivalent to the speed of the intermediate shaft being calculated.

[0121] In this embodiment, it also includes:

[0122] Obtaining the difference Nc between the engine speed value and the calculated value of the front auxiliary gearbox input shaft speed based on the engine speed value Ne and the calculated value of the front auxiliary gearbox input shaft speed Nin;

[0123] The difference between the engine speed value and the calculated value of the front auxiliary box input shaft speed includes: Nc = Ne - Nin;

[0124] Wherein, a preset speed redundancy difference Ny of the difference between the engine speed value and the calculated speed value of the front auxiliary box input shaft is obtained;

[0125] Determine whether the intermediate shaft sensor is diagnosed as being in a normal state based on the difference Nc between the engine speed value and the calculated value of the front auxiliary box input shaft speed and the preset speed redundancy difference Ny;

[0126] Determining whether the intermediate shaft sensor is diagnosed as a fault-free state includes:

[0127] If the difference Nc between the engine speed value and the calculated value of the front auxiliary box input shaft speed is less than the preset speed redundancy difference Ny, the intermediate shaft sensor is diagnosed as being in a non-fault state.

[0128] Specifically, because the engine output shaft and the front auxiliary transmission input shaft are connected via a clutch, the engine speed and the front auxiliary transmission input shaft speed are normally very close. However, because the clutch is not engaged, there is a certain error, but it must be reasonable. A preset speed margin difference Ny is set, representing the difference between the engine speed and the calculated front auxiliary transmission input shaft speed, to determine whether the intermediate shaft sensor diagnosis is in a normal state.

[0129] In this embodiment, the intermediate shaft sensor is diagnosed as being in a non-fault state including:

[0130] According to the current diagnosis of the intermediate shaft sensor as being in a fault-free state, information on the timer timing control is obtained;

[0131] Comparing the difference Nc between the engine speed value and the calculated value of the front auxiliary box input shaft speed with the preset speed redundancy difference Ny;

[0132] If the difference Nc between the engine speed value and the calculated speed value of the front auxiliary box input shaft is greater than or equal to the preset speed redundancy difference Ny, the timer is controlled to start timing according to the timer timing control information;

[0133] Start timing according to the control timer, set the time threshold t1, and record the delay time t;

[0134] If the delay time t is greater than or equal to the time threshold t1, it is again determined whether the intermediate shaft sensor is diagnosed as being in a non-fault state;

[0135] If the difference Nc between the engine speed value and the calculated value of the front auxiliary box input shaft speed is less than the preset speed redundancy difference Ny, the intermediate shaft sensor is diagnosed as being in a non-fault state.

[0136] Specifically, in this embodiment, the fault status of the intermediate shaft sensor is not continuously stable and may fluctuate. For example, due to ambient temperature, aging of components and circuits, and unstable data transmission, the intermediate shaft sensor may be in a stable state. Even if the intermediate shaft sensor is currently diagnosed as fault-free, periodic monitoring is still required after a preset delay.

[0137] From the start of the vehicle, after the first round of comparison between the difference Nc between the engine speed value and the calculated value of the front auxiliary box input shaft speed and the preset speed redundancy difference Ny, it is concluded that the current intermediate shaft sensor is diagnosed as a fault-free state, and then the delay period is continued to be set to continuously trigger the judgment process again.

[0138] In this embodiment, the time threshold t1 can be set dynamically based on specific operating conditions. For example, when the vehicle is just starting up, the temperature is relatively low, and the intermediate shaft sensor is not affected by the high temperature and can still function normally. In this case, the time threshold t1 can be increased. If the engine has been running for a long time, such as when the vehicle has difficulty shifting gears and is forced to stop by the roadside, the time threshold t1 can be reduced and the sampling frequency increased.

[0139] In this embodiment, determining whether the intermediate shaft sensor is diagnosed as being in a non-fault state further includes:

[0140] If the difference Nc between the engine speed value and the input shaft speed value is greater than or equal to the preset speed difference Ny between the engine speed value and the input shaft speed value, then obtaining the timer timing control information;

[0141] Start timing according to the control timer, set the time threshold t1, and record the delay time t;

[0142] If the delay time t is greater than or equal to the time threshold t1, it is again determined whether the intermediate shaft sensor is diagnosed as being in a non-fault state;

[0143] If the difference Nc between the engine speed value and the input shaft speed value is greater than or equal to the preset speed difference Ny between the engine speed value and the input shaft speed value, the intermediate shaft sensor is diagnosed as being in a faulty state.

[0144] Specifically, because the engine and front auxiliary transmission are connected via a clutch, if the clutch plate is severely worn during the connection process or when the accelerator is depressed, the difference Nc between the engine speed and the input shaft speed may briefly become greater than or equal to the preset speed difference Ny between the engine speed and the input shaft speed. To prevent misjudgments caused by the clutch, the difference Nc between the engine speed and the input shaft speed can be compared again with the preset speed difference Ny between the engine speed and the input shaft speed after a timer delay has expired. If the difference Nc between the engine speed and the input shaft speed is still greater than or equal to the preset speed difference Ny between the engine speed and the input shaft speed, it can be determined that the intermediate shaft sensor is faulty.

[0145] When the engine is just started, the temperature is low and the intermediate shaft sensor is not affected by the high temperature and can still work normally, so the time threshold t1 can be increased. When the engine runs for a long time, such as when the vehicle has difficulty shifting gears and is forced to stop by the roadside, the time threshold t1 can be reduced and the sampling frequency can be increased.

[0146] In this embodiment, the time threshold t1 can be set to a variable value based on specific operating conditions. For example, if the intermediate shaft sensor is diagnosed as fault-free during the previous delay period (the difference Nc between the engine speed and the calculated speed of the front auxiliary transmission input shaft is less than the preset speed margin difference Ny), then the time threshold t1 will be increased during the next delay period. If the intermediate shaft sensor is diagnosed as faulty during the previous delay period (the difference Nc between the engine speed and the calculated speed of the front auxiliary transmission input shaft is greater than or equal to the preset speed margin difference Ny), then the time threshold t1 will be decreased during the next delay period.

[0147] Through the change of the floating time threshold t1, the working conditions that are easy to expose abnormal conditions are monitored more vigorously, the working conditions with abnormal conditions that are easy to be ignored are monitored more vigorously, and the working conditions with abnormal conditions that are easy to be misjudged are monitored with caution.

[0148] Figure 3 It is a structural diagram of an intermediate shaft sensor fault diagnosis device provided by one or more embodiments of the present invention.

[0149] like Figure 3 The intermediate shaft sensor fault diagnosis device shown includes: an information acquisition module, an action control module, a gear status module, a start diagnosis module, and a clutch information module;

[0150] Information acquisition module, used to obtain the speed information of the engine and AMT transmission system;

[0151] The motion control module is used to control the clutch disengagement and gear shifting based on the speed information of the engine and the AMT transmission system;

[0152] The gear status module is used to determine whether the gear status is neutral;

[0153] a gear scanning module, configured to, if yes, continue scanning the gear status according to a preset first time period;

[0154] Start the diagnostic module, and if yes, start the intermediate shaft sensor fault diagnosis;

[0155] The clutch information module is used to obtain information on the clutch position status based on the fault diagnosis of the starting intermediate shaft sensor.

[0156] It is worth noting that although the present system only discloses an information acquisition module, an action control module, a gear status module, a start-up diagnosis module, and a clutch information module, it does not mean that the present device is limited to the above-mentioned basic functional modules. Rather, what the present invention wants to express is that, based on the above-mentioned basic functional modules, those skilled in the art can arbitrarily add one or more functional modules in combination with the existing technology to form an infinite number of embodiments or technical solutions. In other words, the present system is open rather than closed. Just because the present embodiment only discloses individual basic functional modules, it cannot be considered that the scope of protection of the claims of the present invention is limited to the above-mentioned basic functional modules.

[0157] Through the above solution, the following beneficial technical effects are achieved:

[0158] The present application reads the intermediate shaft sensor data in the neutral state to determine whether the intermediate shaft sensor is faulty, thereby improving the existing defect that diagnosis can only be performed in the gear engaged state.

[0159] This application determines the fault status of the intermediate shaft sensor through regular scanning, detects the malfunction of the intermediate shaft sensor as early as possible, repairs and replaces it early, and reduces the risk of deterioration.

[0160] Figure 4 Schematic diagram of an AMT transmission system according to a specific embodiment of the present invention.

[0161] Figure 5 It is a schematic diagram of the intermediate shaft sensor fault diagnosis process according to a specific embodiment of the present invention.

[0162] In a specific embodiment, Figure 4 The AMT transmission system shown includes:

[0163] 1. Input shaft, 2. Front auxiliary box, 3. Intermediate shaft reduction gear, 4. Intermediate shaft counting gear, 5. Intermediate shaft speed sensor, 6. Intermediate shaft, 7. Drive shaft counting gear, 8. Drive shaft, 9. Drive shaft speed sensor, 10. Transmission control unit, 11. Engine control unit, 12. Input gear, 13. Engine, Clutch 14;

[0164] When clutch 14 is engaged, torque and speed from engine 13 are transmitted via input shaft 1. Input gear 12 on input shaft 1 rotates co-rotating with the input shaft via a spline connection. Input gear 12 is meshed with the intermediate shaft reduction gear 3. To achieve different gear ratios, multiple gear sets can be added between input gear 12 and intermediate shaft reduction gear 3 for speed reduction. The intermediate shaft reduction gear 3 is splined to intermediate shaft 6, ensuring that the intermediate shaft reduction gear 3 and intermediate shaft 6 have the same speed and transmit power.

[0165] The intermediate shaft counting gear 4 is connected to the intermediate shaft 6 through a spline connection and rotates together with the intermediate shaft 6 at the same speed. At this time, a pulse frequency signal is formed between the intermediate shaft speed sensor 5 and the intermediate shaft technical gear 4, which is transmitted to the transmission control unit 10 through the signal line. The transmission control unit 10 processes the signal transmitted by the sensor through internal hardware and transmits the processed signal to the software. The software calculates the current speed of the intermediate shaft counting gear 4, that is, the intermediate shaft speed n_layshaft.

[0166] Intermediate shaft 6 transmits power and speed to drive shaft 8 via splines and gear meshing. Drive shaft counter gear 7 is connected to drive shaft 8 via gear meshing. Drive shaft 8 (equivalent to the total output shaft of the entire AMT transmission system) and drive shaft counter gear 7 rotate together at the same speed. At this time, a pulse frequency signal is generated between drive shaft speed sensor 9 (equivalent to the aforementioned drive shaft sensor) and drive shaft counter gear 7. The pulse frequency signal is transmitted via a signal line to transmission control unit 10. Transmission control unit 10 processes the signal from the sensor through internal hardware and transmits the processed signal to software. The software drives the current speed of drive shaft counter gear 7, i.e., the output shaft speed n_output.

[0167] After obtaining the intermediate shaft speed, the internal software of the transmission control unit 10 uses the transmission ratio i between the input shaft 1 and the intermediate shaft 6 to calculate the input shaft speed N_input = i*N_layshaft by multiplying the transmission ratio by the intermediate shaft speed N_layshaft. At the same time, the transmission control unit 10 obtains the engine speed Ne by communicating with the engine control unit 11.

[0168] In another specific embodiment, Figure 5 The intermediate shaft sensor fault diagnosis process shown includes: at the start, first obtaining the current gear position of the AMT, which is obtained by the AMT controller. Determining whether the current gear position is neutral. If the current gear position is not neutral, then continuing to obtain the current gear position information. If the current gear position is neutral, proceeding to the next step;

[0169] The clutch position is obtained through the clutch position sensor and compared with the preset clutch engagement position. If the clutch position is greater than the preset clutch engagement position, the clutch is controlled to engage. If the clutch position is less than or equal to the preset clutch engagement position, the next step is carried out.

[0170] The current engine speed Ne is obtained through CAN bus communication, the current intermediate shaft speed Nl is obtained through the intermediate shaft speed sensor, the front and auxiliary gearbox transmission ratio R is obtained through the AMT controller, and the input shaft speed Nin = Nl*R is calculated based on the intermediate shaft speed and the front and auxiliary gearbox transmission ratio;

[0171] Calculate the difference between the current engine speed and the input shaft speed, Nc = Ne - Nin. Compare the speed difference Nc with the preset speed difference Ny. If the speed difference Nc is less than the preset speed difference Ny, the intermediate shaft speed sensor is not faulty. If the speed difference Nc is greater than or equal to the preset speed difference Ny, proceed to the next step.

[0172] Start the timer and get the current timer time. If the timer time t is less than the preset time t1, continue to get the timer time. If the timer time t is greater than or equal to the preset time t1, proceed to the next step.

[0173] The current engine speed Ne is obtained through CAN bus communication, the current intermediate shaft speed Nl is obtained through the intermediate shaft speed sensor, and the front and auxiliary gearbox transmission ratio R is obtained through the AMT controller. The input shaft speed Nin = Nl*R is calculated based on the intermediate shaft speed and the front and auxiliary gearbox transmission ratio;

[0174] Calculate the difference between the current engine speed and the input shaft speed, Nc = Ne - Nin. Compare this difference with a preset difference, Ny. If Nc is less than Ny, the intermediate shaft speed sensor is not faulty. If Nc is greater than or equal to Ny, the intermediate shaft speed sensor is faulty.

[0175] Figure 6 This is a structural block diagram of an electronic device according to one or more embodiments of the present invention, including a method for diagnosing an intermediate shaft sensor fault.

[0176] like Figure 6 As shown, the present application provides an electronic device, comprising: a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other via the communication bus;

[0177] The memory stores a computer program, which, when executed by the processor, enables the processor to execute steps of a method for diagnosing a fault of an intermediate shaft sensor.

[0178] The present application also provides a computer-readable storage medium storing a computer program executable by an electronic device. When the computer program runs on the electronic device, the electronic device executes the steps of a method for diagnosing a fault of an intermediate shaft sensor.

[0179] The present application also provides a vehicle, comprising:

[0180] An electronic device for implementing the steps of the intermediate shaft sensor fault diagnosis method;

[0181] a processor, the processor running a program, and executing the steps of the intermediate shaft sensor fault diagnosis method based on data output by the electronic device when the program is running;

[0182] The storage medium is used to store a program, and when the program is running, the program executes the steps of the intermediate shaft sensor fault diagnosis method for the data output from the electronic device.

[0183] The communication bus mentioned in the electronic device mentioned above may be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus. This communication bus can be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is used in the figure, but this does not mean that there is only one bus or only one type of bus.

[0184] The electronic device includes a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system. The hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory. The operating system can be any one or more computer operating systems that control electronic devices through processes, such as the Linux operating system, the Unix operating system, the Android operating system, the iOS operating system, or the Windows operating system. In the embodiments of the present invention, the electronic device can be a handheld device such as a smartphone or a tablet computer, or an electronic device such as a desktop computer or a portable computer, which is not particularly limited in the embodiments of the present invention.

[0185] The execution subject of the electronic device control in the embodiment of the present invention can be an electronic device, or a functional module in the electronic device that can call a program and execute the program. The electronic device can obtain the firmware corresponding to the storage medium. The firmware corresponding to the storage medium is provided by the supplier. The firmware corresponding to different storage media can be the same or different, and is not limited here. After the electronic device obtains the firmware corresponding to the storage medium, it can write the firmware corresponding to the storage medium into the storage medium, specifically, burn the firmware corresponding to the storage medium into the storage medium. The process of burning the firmware into the storage medium can be implemented using existing technology and will not be described in detail in the embodiment of the present invention.

[0186] The electronic device can also obtain a reset command corresponding to the storage medium. The reset command corresponding to the storage medium is provided by the supplier. The reset commands corresponding to different storage media can be the same or different, and are not limited here.

[0187] In this case, the storage medium of the electronic device is a storage medium in which the corresponding firmware is written. The electronic device can respond to the reset command corresponding to the storage medium in which the corresponding firmware is written, thereby resetting the storage medium in which the corresponding firmware is written according to the reset command corresponding to the storage medium. The process of resetting the storage medium according to the reset command can be implemented in the existing technology and will not be described in detail in the embodiments of the present invention.

[0188] For the convenience of description, the above devices are described as various units and modules according to their functions. Of course, when implementing this application, the functions of each unit and module can be implemented in the same or multiple software and / or hardware.

[0189] Those skilled in the art will understand that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by those skilled in the art in the art to which the present invention pertains. It should also be understood that terms such as those defined in common dictionaries should be understood to have meanings consistent with those in the context of the prior art and, unless specifically defined, will not be interpreted in an idealized or overly formal sense.

[0190] For simplicity of description, the method embodiments are described as a series of actions. However, those skilled in the art should be aware that the embodiments of the present invention are not limited by the order of the actions described, because certain steps can be performed in other orders or simultaneously according to the embodiments of the present invention. Secondly, those skilled in the art should also be aware that the embodiments described in this specification are all preferred embodiments, and the actions involved are not necessarily required by the embodiments of the present invention.

[0191] Through the description of the above embodiments, it can be seen that those skilled in the art can clearly understand that the present application can be implemented by means of software plus a necessary general-purpose hardware platform. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product. The computer software product can be stored in a storage medium, such as ROM / RAM, a magnetic disk, an optical disk, etc., and includes a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in various embodiments of the present application or certain parts of the embodiments.

[0192] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for diagnosing an intermediate shaft sensor fault, characterized in that: The intermediate shaft sensor fault diagnosis method is run in the AMT transmission system. The AMT transmission system includes: a power module for transmitting engine power to the vehicle load; A sensing module, used to detect the operating status of the AMT transmission system that transmits engine power to the vehicle load; AMT control module, used to control the gear shifting and clutch connection of the AMT transmission system; The power module includes: a front auxiliary box module, a rear auxiliary box module and a gear box module; The input shaft of the front auxiliary box module is connected to the engine output shaft through a clutch; the drive shaft of the rear auxiliary box module is used to connect to the rear axle of the vehicle to drive the wheels; the gear box module is provided with a gear system for transmitting the engine power under the control of the AMT transmission system to the vehicle load; The gear box module is provided with a gear system including an intermediate shaft; the front auxiliary box module is meshedly connected to the gear box module via the intermediate shaft, the gear box module is meshedly connected to the rear auxiliary box module, and is connected to the rear axle of the vehicle by a drive shaft; The sensing module includes: an intermediate shaft sensor and a drive shaft sensor; The intermediate shaft sensor fault diagnosis method comprises the following steps: Obtain engine and AMT transmission system speed information; Based on the speed information of the engine and the AMT transmission system, the clutch disengagement action is controlled to coordinate the gear shifting action; wherein, determining whether the gear state is a neutral state; If not, then continue scanning the gear status according to a preset first time period; If yes, then start the intermediate shaft sensor fault diagnosis; According to the above mentioned starting intermediate shaft sensor fault diagnosis, information on the clutch position state is obtained; Wherein, the information of obtaining the clutch position state includes: Determine whether the clutch position state is in an engaged state; If not, then continuously scanning the clutch position state according to a preset second time period; If yes, then obtain the engine speed value Ne; It also includes determining whether the intermediate shaft speed sensor is in a data readable state; If it is readable, then read the intermediate shaft speed data through the intermediate shaft speed sensor, including obtaining the intermediate shaft speed value NI; The method further includes obtaining a transmission ratio value R of the front auxiliary box; According to the intermediate shaft speed value NI and the transmission ratio value R of the front auxiliary box, the calculated value of the front auxiliary box input shaft speed is obtained; The calculated value of the front auxiliary box input shaft speed includes: Nin=NI×R; Among them, also include: Obtaining a difference Nc between the engine speed value and the calculated value of the front auxiliary box input shaft speed according to the engine speed value Ne and the calculated value of the front auxiliary box input shaft speed Nin; The difference between the engine speed value and the calculated value of the front auxiliary box input shaft speed includes: Nc=Ne-Nin; wherein, a preset speed redundancy difference Ny of the difference between the engine speed value and the calculated speed value of the front auxiliary box input shaft is obtained; determining whether the intermediate shaft sensor is diagnosed as being in a normal state based on a difference Nc between the engine speed value and the calculated speed value of the front auxiliary box input shaft and the preset speed redundancy difference Ny; The determining whether the intermediate shaft sensor is diagnosed as being in a fault-free state includes: If the difference Nc between the engine speed value and the calculated speed value of the front auxiliary box input shaft is smaller than the preset speed redundancy difference Ny, the intermediate shaft sensor is diagnosed as being in a non-fault state.

2. The intermediate shaft speed sensor fault diagnosis method according to claim 1, characterized in that: The intermediate shaft sensor is diagnosed as being in a non-fault state including: According to the intermediate shaft sensor currently being diagnosed as being in a fault-free state, obtaining timer timing control information; Comparing the difference Nc between the engine speed value and the calculated value of the front auxiliary box input shaft speed with the preset speed redundancy difference Ny; If the difference Nc between the engine speed value and the calculated speed value of the front auxiliary box input shaft is greater than or equal to the preset speed redundancy difference Ny, the timer is controlled to start timing according to the timer timing control information; Start timing according to the control timer, set the time threshold t1, and record the delay time t; determining again whether the intermediate shaft sensor is diagnosed as being in a non-fault state, based on the delay time t being greater than or equal to the time threshold t1; If the difference Nc between the engine speed value and the calculated speed value of the front auxiliary box input shaft is smaller than the preset speed redundancy difference Ny, the intermediate shaft sensor is diagnosed as being in a non-fault state.

3. The intermediate shaft speed sensor fault diagnosis method according to claim 1, characterized in that: The determining whether the intermediate shaft sensor is diagnosed as being in a non-fault state further includes: If the difference Nc between the engine speed value and the calculated speed value of the front auxiliary box input shaft is greater than or equal to the preset speed redundancy difference Ny between the engine speed value and the calculated speed value of the front auxiliary box input shaft, then obtaining the timer timing control information; Start timing according to the control timer, set the time threshold t1, and record the delay time t; determining again whether the intermediate shaft sensor is diagnosed as being in a non-fault state, based on the delay time t being greater than or equal to the time threshold t1; If the difference Nc between the engine speed value and the calculated speed value of the front auxiliary box input shaft is greater than or equal to the preset speed redundancy difference Ny between the engine speed value and the calculated speed value of the front auxiliary box input shaft, the intermediate shaft sensor is diagnosed as being in a faulty state.

4. The intermediate shaft speed sensor fault diagnosis method according to any one of claims 1 to 3, characterized in that: Also included: the sensing module sends information about the operating status of the AMT transmission system to the AMT control module; The AMT control module controls the gear shifting and clutch connection of the AMT transmission system based on a preset control strategy to transfer engine power to the vehicle load.

5. The intermediate shaft speed sensor fault diagnosis method according to claim 4, characterized in that: The intermediate shaft sensor is used to collect information on the rotation state of the intermediate shaft; The drive shaft sensor is used to collect information on the rotation state of the drive shaft; The states of the clutch engagement and gear shifting actions are monitored according to the rotation states of the engine output shaft and the intermediate shaft.

6. An intermediate shaft sensor fault diagnosis device, characterized in that: A method for diagnosing a fault of an intermediate shaft speed sensor according to any one of claims 1 to 5; The intermediate shaft sensor fault diagnosis device includes: Information acquisition module, used to obtain the speed information of the engine and AMT transmission system; an action control module for controlling the clutch engagement and disengagement based on the speed information of the engine and the AMT transmission system, and coordinating the gear shifting with the gear change action; The gear status module is used to determine whether the gear status is neutral; a gear scanning module, configured to, if yes, continue scanning the gear status according to a preset first time period; Start the diagnostic module, and if yes, start the intermediate shaft sensor fault diagnosis; The clutch information module is used to obtain clutch position status information based on the startup intermediate shaft sensor fault diagnosis.

7. An electronic device, characterized in that: include: A processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other via the communication bus; A computer program is stored in the memory, and when the computer program is executed by the processor, the processor executes the steps of the intermediate shaft sensor fault diagnosis method according to any one of claims 1 to 5.

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