Alarm emergency maintenance system for detecting collapse of rear suspension of automobile

Abstract

The invention relates to the technical field of automobile fault detection, and discloses an alarm emergency maintenance system for detecting collapse of an automobile rear suspension. The acquisition module is used for acquiring the vertical distance from the lowest point of the tail of the automobile to the ground, the vertical distance from left and right wheel brows to the center of an axle, the height difference of the vertical distance from the left and right wheel brows to the center of the axle and the body pitch angle; the judgment module is used for preliminarily judging whether the rear suspension collapses or not; the alarm module is used for judging the collapse type, further judging the collapse level and giving a collapse alarm according to the collapse type and the collapse level; and the maintenance module is used for storing the recorded information to an automobile control system, sending the recorded information to a remote maintenance platform through the wireless communication module, and controlling the automobile to enter a speed limiting mode when a collapse alarm is given. Through cooperative work of multiple modules, powerful support is provided for safe and efficient operation and comfortable driving of the automobile.

Description

Technical Field

[0001] This invention relates to the field of automotive fault detection technology, and more specifically, to an emergency maintenance system for detecting rear suspension collapse in automobiles. Background Technology

[0002] Rear suspension collapse during vehicle operation is a potential hazard that could lead to serious safety issues. Traditional methods for inspecting rear suspensions are relatively simplistic, relying heavily on the driver's subjective feelings or simple, periodic manual checks. For example, a driver might suspect a problem with the rear suspension by feeling unusual bumps or changes in the vehicle's posture while driving. However, this method often only detects problems when they are already quite severe, making it difficult to identify potential rear suspension collapse risks in a timely manner. Regular manual checks also have limitations. On the one hand, it's difficult to precisely set the inspection cycle; too long a cycle may lead to delayed problem detection, while too short a cycle increases maintenance and time costs. On the other hand, manual inspections may result in incomplete checks and inaccurate assessments.

[0003] From a safety perspective, there is currently a lack of a comprehensive, real-time, and accurate system for detecting rear suspension collapse in vehicles. This prevents drivers from being aware of potential rear suspension problems in a timely manner, easily leading to serious safety accidents such as loss of vehicle control and tire blowouts due to undetected rear suspension collapse, threatening the lives of passengers. In terms of vehicle maintenance and management, when a rear suspension collapse occurs, repair personnel struggle to obtain detailed parameter data and the collapse level in a timely manner, making it impossible to prepare appropriate repair plans and parts in advance, thus prolonging repair time and increasing repair costs. Simultaneously, vehicle management personnel find it difficult to monitor and effectively manage the rear suspension conditions of multiple vehicles in real time, failing to promptly identify potential hazards and rationally arrange maintenance plans, impacting overall vehicle operating efficiency. Regarding the driving experience, once a rear suspension collapses, if the vehicle lacks corresponding emergency measures, it may suddenly break down, causing significant inconvenience to the driver. Furthermore, the lack of scientific guidance for speed control means that excessive speed may exacerbate the collapse, further worsening the vehicle's condition and reducing driving stability and comfort.

[0004] Therefore, it is necessary to provide an emergency maintenance system for detecting rear suspension collapse in automobiles to solve the current lack of a comprehensive, real-time, and accurate system for detecting rear suspension collapse in automobiles. This results in drivers being unable to promptly recognize potential problems that could lead to safety accidents, maintenance personnel being unable to obtain data in a timely manner, extending maintenance time and costs, vehicle management personnel being unable to monitor in real time and arrange maintenance reasonably, and the lack of emergency measures and speed guidance for rear suspension collapse affecting the driving experience. Summary of the Invention

[0005] In view of this, the present invention proposes an emergency maintenance system for detecting rear suspension collapse in automobiles, aiming to solve the current problems of lacking a comprehensive, real-time and accurate system for detecting rear suspension collapse in automobiles, which makes it difficult for drivers to know about potential problems in time and cause safety accidents, makes it difficult for maintenance personnel to obtain data in time and prolong maintenance time and costs, makes it difficult for vehicle management personnel to monitor in real time and arrange maintenance reasonably, and the lack of emergency measures and speed guidance for rear suspension collapse affects the driving experience.

[0006] This invention proposes an emergency maintenance system for detecting rear suspension collapse in automobiles, comprising: A sensor module is installed at the bottom of the vehicle and is used to collect vehicle parameters; wherein, the sensor module includes an ultrasonic distance sensor, a vision sensor and a tilt sensor; The data acquisition module is used to acquire the vertical distance from the lowest point of the rear of the car to the ground, the vertical distance between the left and right wheel arches and the center of the wheel axle, the height difference between the vertical distances between the left and right wheel arches and the center of the wheel axle, and the vehicle pitch angle; wherein, the vertical distance from the lowest point of the rear of the car to the ground is recorded as the first vertical distance, and the vertical distances between the left and right wheel arches and the center of the wheel axle are recorded as the second vertical distance and the third vertical distance, respectively. The judgment module is used to make a preliminary judgment on whether the rear suspension has collapsed based on the second vertical distance and the third vertical distance; The alarm module is used to determine the collapse type based on the first vertical distance, height difference and vehicle pitch angle if the judgment result is that a collapse has occurred, further determine the collapse level, and issue a collapse alarm based on the collapse type and collapse level. The maintenance module is used to automatically record various parameter data and collapse level when the collapse occurs after the alarm module triggers the collapse alarm, store the recorded information in the vehicle control system, and send it to the remote maintenance platform through the wireless communication module; the maintenance module is also used to control the vehicle to enter the speed limit mode when the collapse alarm is triggered.

[0007] Furthermore, the ultrasonic distance sensor is located at the bottom of the rear of the vehicle, the vision sensor is located inside the wheel arches on both sides of the rear of the vehicle, and the tilt sensor is located at the longitudinal center of the vehicle chassis.

[0008] Furthermore, when the judgment module is used to initially determine whether the rear suspension has collapsed based on the second vertical distance and the third vertical distance, it includes: A minimum distance is preset. If both the second and third vertical distances are greater than or equal to the minimum distance, it is determined that the rear suspension has not collapsed. Otherwise, it is determined that the rear suspension has collapsed.

[0009] Furthermore, the alarm module, when determining the collapse type based on the first vertical distance, height difference, and vehicle pitch angle if the judgment result indicates a collapse has occurred, includes: If either the second vertical distance or the third vertical distance is less than the minimum distance value, and the height difference is greater than a preset height difference threshold, the first vertical distance is greater than a preset minimum vertical distance value, and the vehicle pitch angle is less than a preset pitch angle threshold, then the collapse type is determined to be a unilateral collapse. When the second vertical distance and the third vertical distance are both less than the minimum distance value, the first vertical distance is greater than the minimum vertical distance value, and the vehicle pitch angle is less than the pitch angle threshold, the collapse type is determined to be a bilateral collapse. Otherwise, the collapse type is determined to be a comprehensive collapse.

[0010] Furthermore, when the alarm module is used to further determine the level of collapse, it includes: If the collapse type is unilateral collapse or bilateral collapse, the collapse level is level one collapse; If the collapse type is a comprehensive collapse, then the collapse level is a level two collapse; The collapse levels are classified from low to high as Level 1 collapse and Level 2 collapse.

[0011] Furthermore, when the alarm module is used to issue a collapse alarm based on the collapse type and collapse level, it includes: The alarm information is displayed visually, including the type and level of collapse.

[0012] Furthermore, the maintenance module is used to automatically record various parameter data and collapse level when a collapse occurs, store the recorded information in the vehicle control system, and send it to the remote maintenance platform via the wireless communication module, including: The parameters include the first vertical distance, the second vertical distance, the third vertical distance, the height difference, and the vehicle pitch angle. The recorded information includes various parameter data, collapse type, collapse level, and data on the judgment process of collapse type and collapse level.

[0013] Furthermore, the maintenance module is also used to control the vehicle to enter speed-limited mode when a collapse alarm is triggered, including: The real-time speed of the vehicle is obtained when the collapse alarm is triggered, and the vehicle speed is controlled to decelerate based on the real-time speed. If it is determined that the vehicle needs to be slowed down, then the vehicle will be slowed down in stages according to the level of collapse.

[0014] Furthermore, when obtaining the real-time speed of the vehicle at the time of the collapse alarm, and determining whether to control the vehicle to decelerate based on the real-time speed, the process includes: If the real-time speed is not zero and the vehicle is not currently slowing down, it is determined that the vehicle needs to be slowed down. Otherwise, it is determined that there is no need to control the car to slow down.

[0015] Furthermore, when it is determined that vehicle deceleration needs to be controlled, the step of performing graded deceleration according to the collapse level includes: The vehicle deceleration is controlled according to the aforementioned collapse level; The rate at which the vehicle decelerates is directly proportional to the level of subsidence.

[0016] Compared with existing technologies, the beneficial effects of this invention are as follows: From a safety perspective, this system improves driving safety. The ultrasonic distance sensor, vision sensor, and tilt sensor in the sensor module work together to comprehensively collect vehicle parameters. The acquisition module accurately obtains key data such as the vertical distance from the lowest point of the rear of the vehicle to the ground, the vertical distance and height difference between the left and right wheel arches and the center of the wheel axle, and the vehicle's pitch angle. Based on this data, the judgment module can initially determine whether the rear suspension has collapsed. If the alarm module confirms a collapse, it can further determine the type and level of the collapse and issue an alarm. This allows the driver to be aware of the vehicle's condition in a timely manner, avoiding serious safety accidents such as loss of vehicle control and tire blowouts caused by unnoticed rear suspension collapse, thus building a solid defense for the safety of passengers. From the perspective of vehicle maintenance and management, after the alarm is triggered, the maintenance module automatically records various parameter data and the collapse level at the time of the collapse, stores them in the vehicle control system, and sends them to the remote maintenance platform. This allows automotive repair personnel to understand vehicle problems in advance, prepare corresponding repair plans and parts, and shorten repair time and costs. Meanwhile, vehicle management personnel can remotely monitor and manage the rear suspension status of multiple vehicles, promptly identify potential hazards, rationally arrange maintenance plans, and improve overall vehicle operating efficiency. Regarding the driving experience, when a collapse is detected and an alarm is triggered, the maintenance module controls the vehicle to enter a speed-limited mode. This ensures the vehicle can still travel slowly even in situations with safety hazards, avoiding the inconvenience of sudden breakdowns, while also preventing excessive speed from exacerbating the collapse and further deteriorating the vehicle's condition. This allows the driver to handle problems more calmly, improving driving stability and comfort. In summary, this invention, through the collaborative work of multiple modules, demonstrates significant advantages in safety assurance, vehicle maintenance management, and driving experience, providing strong support for the safe, efficient operation and comfortable driving of automobiles. Attached Figure Description

[0017] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 This is a functional block diagram of an emergency maintenance system for detecting rear suspension collapse of a vehicle, provided in an embodiment of the present invention. Detailed Implementation

[0018] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the disclosure to those skilled in the art. It should be noted that, unless otherwise specified, embodiments and features in the embodiments of the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0019] In some embodiments of this application, see Figure 1 As shown, this embodiment provides an emergency maintenance system for detecting rear suspension collapse in automobiles, including: A sensor module is installed at the bottom of the vehicle and is used to collect vehicle parameters; wherein, the sensor module includes an ultrasonic distance sensor, a vision sensor and a tilt sensor; The data acquisition module is used to acquire the vertical distance from the lowest point of the rear of the car to the ground, the vertical distance between the left and right wheel arches and the center of the wheel axle, the height difference between the vertical distances between the left and right wheel arches and the center of the wheel axle, and the vehicle pitch angle; wherein, the vertical distance from the lowest point of the rear of the car to the ground is recorded as the first vertical distance, and the vertical distances between the left and right wheel arches and the center of the wheel axle are recorded as the second vertical distance and the third vertical distance, respectively. The judgment module is used to make a preliminary judgment on whether the rear suspension has collapsed based on the second vertical distance and the third vertical distance; The alarm module is used to determine the collapse type based on the first vertical distance, height difference and vehicle pitch angle if the judgment result is that a collapse has occurred, further determine the collapse level, and issue a collapse alarm based on the collapse type and collapse level. The maintenance module is used to automatically record various parameter data and collapse level when the collapse occurs after the alarm module triggers the collapse alarm, store the recorded information in the vehicle control system, and send it to the remote maintenance platform through the wireless communication module; the maintenance module is also used to control the vehicle to enter the speed limit mode when the collapse alarm is triggered.

[0020] From a safety perspective, this system understandably enhances driving safety. The ultrasonic distance sensor, vision sensor, and tilt sensor in the sensor module work together to comprehensively collect vehicle parameters. The acquisition module accurately obtains key data such as the vertical distance from the lowest point of the rear of the vehicle to the ground, the vertical distance and height difference between the left and right wheel arches and the wheel axle centers, and the vehicle's pitch angle. Based on this data, the judgment module can initially determine whether the rear suspension has collapsed. If the alarm module confirms a collapse, it can further determine the type and level of the collapse and issue an alarm. This allows the driver to be aware of the vehicle's condition in a timely manner, avoiding serious safety accidents such as loss of vehicle control and tire blowouts caused by unnoticed rear suspension collapse, thus building a strong defense for the safety of passengers. From a vehicle maintenance and management perspective, after the alarm is triggered, the maintenance module automatically records various parameter data and the collapse level at the time of the collapse, stores them in the vehicle control system, and sends them to the remote maintenance platform. This allows automotive repair personnel to understand vehicle problems in advance, prepare corresponding repair plans and parts, and shorten repair time and costs. Meanwhile, vehicle management personnel can remotely monitor and manage the rear suspension status of multiple vehicles, promptly identify potential hazards, rationally arrange maintenance plans, and improve overall vehicle operating efficiency. Regarding the driving experience, when a collapse is detected and an alarm is triggered, the maintenance module controls the vehicle to enter a speed-limited mode. This ensures the vehicle can still travel slowly even in situations with safety hazards, avoiding the inconvenience of sudden breakdowns, while also preventing excessive speed from exacerbating the collapse and further deteriorating the vehicle's condition. This allows the driver to handle problems more calmly, improving driving stability and comfort. In summary, this invention, through the collaborative work of multiple modules, demonstrates significant advantages in safety assurance, vehicle maintenance management, and driving experience, providing strong support for the safe, efficient operation and comfortable driving of automobiles.

[0021] In some embodiments of this application, the ultrasonic distance sensor is disposed at the bottom of the rear of the vehicle, the vision sensor is disposed inside the wheel arches on both sides of the rear of the vehicle, and the tilt sensor is disposed at the longitudinal center of the chassis of the vehicle.

[0022] In some embodiments of this application, when the determination module is used to initially determine whether the rear suspension has collapsed based on the second vertical distance and the third vertical distance, it includes: A minimum distance is preset. If both the second and third vertical distances are greater than or equal to the minimum distance, it is determined that the rear suspension has not collapsed. Otherwise, it is determined that the rear suspension has collapsed.

[0023] In some embodiments of this application, the alarm module is used to determine the type of collapse based on the first vertical distance, height difference, and vehicle pitch angle if the determination result is that a collapse has occurred, including: If either the second vertical distance or the third vertical distance is less than the minimum distance value, and the height difference is greater than a preset height difference threshold, the first vertical distance is greater than a preset minimum vertical distance value, and the vehicle pitch angle is less than a preset pitch angle threshold, then the collapse type is determined to be a unilateral collapse. When the second vertical distance and the third vertical distance are both less than the minimum distance value, the first vertical distance is greater than the minimum vertical distance value, and the vehicle pitch angle is less than the pitch angle threshold, the collapse type is determined to be a bilateral collapse. Otherwise, the collapse type is determined to be a comprehensive collapse.

[0024] Understandably, the layout of the sensor modules—with the ultrasonic distance sensor positioned at the bottom of the rear of the car, the vision sensor inside the wheel arches on both sides of the rear, and the tilt sensor at the longitudinal center of the chassis—allows the sensors to acquire comprehensive and accurate data on the rear of the car and its attitude. The ultrasonic distance sensor effectively measures the distance between the rear of the car and obstacles or the ground, providing basic data for judgment; the vision sensor acquires visual information from the wheel arches, assisting in assessing the suspension status; and the tilt sensor, located at the longitudinal center of the chassis, accurately senses the vehicle's pitch angle, providing necessary evidence for a comprehensive assessment of rear suspension collapse.

[0025] Furthermore, the judgment module's settings, by pre-setting a minimum distance, can easily and effectively make a preliminary judgment on whether the rear suspension has collapsed, quickly arriving at an initial conclusion and providing direction for further judgment. The alarm module integrates multiple key parameters such as the first vertical distance, height difference, and vehicle pitch angle to accurately distinguish between single-sided collapse, double-sided collapse, and combined collapse. When a rear suspension collapse occurs, it allows maintenance personnel to quickly understand the specific type of collapse and carry out targeted repairs, greatly improving maintenance efficiency, reducing maintenance costs, and ensuring vehicle driving safety, avoiding safety hazards caused by suspension problems, and providing more reliable driving protection for car owners.

[0026] In some embodiments of this application, when the alarm module is used to further determine the collapse level, it includes: If the collapse type is unilateral collapse or bilateral collapse, the collapse level is level one collapse; If the collapse type is a comprehensive collapse, then the collapse level is a level two collapse; The collapse levels are classified from low to high as Level 1 collapse and Level 2 collapse.

[0027] Understandably, the alarm module classifies a collapse as Level 1 when it is a single-sided or double-sided collapse; and as Level 2 when it is a combined collapse. The collapse levels are ranked from lowest to highest as Level 1 and Level 2. On one hand, clear collapse level determination rules make the assessment of collapse situations more accurate, enabling rapid and precise classification of different collapse types. On the other hand, from a practical application perspective, different levels of collapse may correspond to different handling measures and response plans. This precise classification helps subsequent rescue and repair work to rationally allocate resources based on the severity of the collapse, improving work efficiency, minimizing potential losses from collapses, and ensuring personnel safety and the stable operation of related facilities.

[0028] In some embodiments of this application, when the alarm module is used to trigger a collapse alarm based on the collapse type and collapse level, it includes: The alarm information is displayed visually, including the type and level of collapse.

[0029] In some embodiments of this application, the maintenance module is used to automatically record various parameter data and collapse level when a collapse occurs, store the recorded information in the vehicle control system, and send it to the remote maintenance platform via a wireless communication module, including: The parameters include the first vertical distance, the second vertical distance, the third vertical distance, the height difference, and the vehicle pitch angle. The recorded information includes various parameter data, collapse type, collapse level, and data on the judgment process of collapse type and collapse level.

[0030] Understandably, the alarm module visualizes alarm information, including the collapse type and level, enabling relevant personnel to intuitively and quickly obtain key information, improving information transmission efficiency, and facilitating timely response decisions. The maintenance module automatically records various parameters such as the first and second vertical distances and the collapse level when a collapse occurs. This recorded information, including parameter data, collapse type, collapse level, and judgment process data, is stored in the vehicle control system and sent to the remote maintenance platform. This not only helps the vehicle control system comprehensively record and analyze its own status, providing data support for subsequent operational optimization, but also allows the remote maintenance platform to promptly grasp the vehicle's collapse situation, formulate maintenance plans in advance, improve the targeting and efficiency of maintenance, ensure vehicle operation safety, and accumulate rich data for fault diagnosis and technical improvement.

[0031] In some embodiments of this application, the maintenance module is further configured to control the vehicle to enter a speed-limited mode when a collapse alarm is triggered, including: The real-time speed of the vehicle is obtained when the collapse alarm is triggered, and the vehicle speed is controlled to decelerate based on the real-time speed. If it is determined that the vehicle needs to be slowed down, then the vehicle will be slowed down in stages according to the level of collapse.

[0032] In some embodiments of this application, the step of obtaining the real-time speed of the vehicle when the collapse alarm is triggered, and determining whether to control the vehicle to decelerate based on the real-time speed, includes: If the real-time speed is not zero and the vehicle is not currently slowing down, it is determined that the vehicle needs to be slowed down. Otherwise, it is determined that there is no need to control the car to slow down.

[0033] In some embodiments of this application, the step of determining that vehicle deceleration needs to be controlled, and then performing graded deceleration according to the collapse level, includes: The vehicle deceleration is controlled according to the aforementioned collapse level; The rate at which the vehicle decelerates is directly proportional to the level of subsidence.

[0034] Understandably, firstly, acquiring the vehicle's real-time speed at the time of the collapse alarm and determining whether to control vehicle deceleration based on this information allows for accurate identification of the vehicle's actual operating status, avoiding unnecessary interference with normal driving caused by blind deceleration. Deceleration is only considered necessary when the real-time speed is not zero and the vehicle is not currently decelerating, ensuring that deceleration operations are triggered based on actual needs. Secondly, graded deceleration based on the collapse level makes the deceleration strategy more targeted. Since the vehicle's deceleration speed is directly proportional to the collapse level, the more severe the collapse, the greater the vehicle's deceleration. This effectively ensures vehicle safety under different levels of danger, reduces the risk of accidents caused by collapses, and enhances the vehicle's ability to respond to unexpected road conditions.

[0035] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program goods. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program goods embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0036] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program goods according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0037] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0038] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0039] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not 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 modifications or equivalent substitutions can still be made to the specific implementation of the present invention. Any modifications or equivalent substitutions that do not depart from the spirit and scope of the present invention should be covered within the scope of protection of the claims of the present invention.

Claims

1. A vehicle rear suspension collapse detection alarm and emergency maintenance system, characterized in that, include: A sensor module is installed at the bottom of the vehicle and is used to collect vehicle parameters; wherein, the sensor module includes an ultrasonic distance sensor, a vision sensor and a tilt sensor; The data acquisition module is used to acquire the vertical distance from the lowest point of the rear of the car to the ground, the vertical distance between the left and right wheel arches and the center of the wheel axle, the height difference between the vertical distances between the left and right wheel arches and the center of the wheel axle, and the vehicle pitch angle; wherein, the vertical distance from the lowest point of the rear of the car to the ground is recorded as the first vertical distance, and the vertical distances between the left and right wheel arches and the center of the wheel axle are recorded as the second vertical distance and the third vertical distance, respectively. The judgment module is used to make a preliminary judgment on whether the rear suspension has collapsed based on the second vertical distance and the third vertical distance; The alarm module is used to determine the collapse type based on the first vertical distance, height difference and vehicle pitch angle if the judgment result is that a collapse has occurred, further determine the collapse level, and issue a collapse alarm based on the collapse type and collapse level. The maintenance module is used to automatically record various parameter data and collapse level when the collapse occurs after the alarm module triggers the collapse alarm, store the recorded information in the vehicle control system, and send it to the remote maintenance platform through the wireless communication module; the maintenance module is also used to control the vehicle to enter the speed limit mode when the collapse alarm is triggered.

2. The emergency maintenance system for detecting rear suspension collapse of a vehicle according to claim 1, characterized in that, The ultrasonic distance sensor is located at the bottom of the rear of the vehicle, the vision sensor is located inside the wheel arches on both sides of the rear of the vehicle, and the tilt sensor is located at the longitudinal center of the vehicle chassis.

3. The emergency maintenance system for detecting rear suspension collapse of a vehicle according to claim 1, characterized in that, When the judgment module is used to initially determine whether the rear suspension has collapsed based on the second vertical distance and the third vertical distance, it includes: A minimum distance is preset. If both the second and third vertical distances are greater than or equal to the minimum distance, it is determined that the rear suspension has not collapsed. Otherwise, it is determined that the rear suspension has collapsed.

4. The emergency maintenance system for detecting rear suspension collapse of a vehicle according to claim 3, characterized in that, The alarm module is used to determine the type of collapse based on the first vertical distance, height difference, and vehicle pitch angle if the judgment result indicates that a collapse has occurred. This includes: If either the second vertical distance or the third vertical distance is less than the minimum distance value, and the height difference is greater than a preset height difference threshold, the first vertical distance is greater than a preset minimum vertical distance value, and the vehicle pitch angle is less than a preset pitch angle threshold, then the collapse type is determined to be a unilateral collapse. When both the second and third vertical distances are less than the minimum distance, the first vertical distance is greater than the minimum vertical distance, and the vehicle pitch angle is less than the pitch angle threshold, the collapse type is determined to be a bilateral collapse. Otherwise, the collapse type is determined to be a comprehensive collapse.

5. The emergency maintenance system for detecting rear suspension collapse of a vehicle according to claim 4, characterized in that, When the alarm module is used to further determine the level of collapse, it includes: If the collapse type is unilateral collapse or bilateral collapse, the collapse level is level one collapse; If the collapse type is a comprehensive collapse, then the collapse level is a level two collapse; The collapse levels are classified from low to high as Level 1 collapse and Level 2 collapse.

6. The emergency maintenance system for detecting rear suspension collapse of a vehicle according to claim 5, characterized in that, The alarm module is used to issue a collapse alarm based on the collapse type and collapse level, including: The alarm information is displayed visually, including the type and level of collapse.

7. The emergency maintenance system for detecting rear suspension collapse of a vehicle according to claim 6, characterized in that, The maintenance module is used to automatically record various parameter data and collapse level when a collapse occurs, store the recorded information in the vehicle control system, and send it to the remote maintenance platform via the wireless communication module, including: The parameters include the first vertical distance, the second vertical distance, the third vertical distance, the height difference, and the vehicle pitch angle. The recorded information includes various parameter data, collapse type, collapse level, and data on the judgment process of collapse type and collapse level.

8. The emergency maintenance system for detecting rear suspension collapse of a vehicle according to claim 7, characterized in that, The maintenance module is also used to control the vehicle to enter speed-limited mode when a collapse alarm is triggered, including: The vehicle's real-time speed is obtained when a collapse alarm is triggered, and the vehicle's deceleration is controlled based on the real-time speed. If it is determined that the vehicle needs to be slowed down, then the vehicle will be slowed down in stages according to the level of collapse.

9. The emergency maintenance system for detecting rear suspension collapse of a vehicle according to claim 8, characterized in that, When obtaining the real-time speed of the vehicle at the time of the collapse alarm, and determining whether to control the vehicle to decelerate based on the real-time speed, the process includes: If the real-time speed is not zero and the vehicle is not currently slowing down, it is determined that the vehicle needs to be slowed down. Otherwise, it is determined that there is no need to control the car to slow down.

10. The emergency maintenance system for detecting rear suspension collapse of a vehicle according to claim 8, characterized in that, If it is determined that vehicle deceleration needs to be controlled, then when performing graded deceleration according to the collapse level, the following is included: The vehicle deceleration is controlled according to the aforementioned collapse level; The rate at which the vehicle decelerates is directly proportional to the level of subsidence.

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