Commercial vehicle DPF regeneration early warning monitoring and reminding system and method

Abstract

The invention provides a commercial vehicle DPF regeneration early warning monitoring and reminding system and method. The system comprises a data monitoring and collecting module, a DPF regeneration early warning recognition module, an abnormity judgment module and a result pushing and displaying module. The method comprises the following steps that S1, vehicle DPF state data are monitored and collected in real time; s2, whether a DPF parking regeneration early warning event is output or not is judged; s3, judging whether the output DPF parking regeneration pre-warning event is a normal active service event or not; s4, whether a DPF regeneration early warning complete event is output or not is judged; s5, pushing to a work order system of a DPF regeneration early warning server side and displaying in a web page; according to the method, the reminding event is generated through the DPF regeneration early warning monitoring method and system, a driver can more visually understand the working state of the DPF system, operation errors caused by the fact that state indication cannot be correctly understood are avoided, and the vehicle maintenance cost and the operation risk are reduced.

Description

Technical Field

[0001] This invention relates to the field of vehicle networking technology, and in particular to a DPF regeneration early warning monitoring and reminder system and method for commercial vehicles. Background Technology

[0002] In recent years, with the continuous advancement of commercial vehicle technology, society has placed higher demands on the environmental performance of commercial vehicles. The emissions of diesel vehicles, including PM (particulate matter) and PN (particle number), are subject to stringent restrictions. To meet emission requirements, diesel vehicles are generally equipped with DPF (diesel particulate filter) technology to capture particulate matter in emissions and prevent pollutant emissions from exceeding standards. However, during the process of capturing particulate matter, the DPF device may experience a decline in its capture performance due to the accumulation of excessive carbonaceous matter, which can affect the normal operation of the engine and even cause power limitations. Therefore, DPF regeneration technology has become the key to maintaining the efficient operation of the DPF.

[0003] DPF regeneration technology restores the trap's trapping performance by periodically burning away the particulate matter accumulated inside the trap. Currently, commercial vehicle instrument panels have an alarm function to remind users when DPF regeneration is needed, but the following drawbacks still exist: Drivers have difficulty understanding the DPF system status: Commercial vehicle drivers may have difficulty accurately understanding the relevant indicator lights, working status, regeneration timing, etc. of the DPF system, which may lead to problems such as excessive DPF carbon load, vehicle torque limitation, or even DPF overload damage due to failure to regenerate in time. Lack of DPF high carbon load torque limitation warning: No torque limitation warning mechanism is set up; when the vehicle enters the torque limitation state due to high carbon load, the driver can only passively contact the maintenance service for fault repair, which increases maintenance costs and operation downtime. 3. Lack of information on DPF regeneration needs among maintenance organizations: Maintenance organizations cannot keep track of the DPF status and regeneration needs of each vehicle in real time, nor can they proactively initiate maintenance services; they can only passively wait for drivers to contact them, lacking the ability to predict and warn of situations such as excessive DPF carbon load in vehicles, and are unable to provide timely preventive or proactive services to vehicles. This leads to delayed resolution of vehicle problems, increasing maintenance costs and operational risks. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a commercial vehicle DPF regeneration early warning monitoring and reminder system and method.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A commercial vehicle DPF regeneration early warning monitoring and reminder system includes a data monitoring and acquisition module, a DPF regeneration early warning identification module, an anomaly judgment module, and a result push and display module; The data monitoring and acquisition module is used to collect basic vehicle information, DPF status data, etc. The DPF regeneration warning identification module is used to determine whether to output a DPF regeneration warning event requiring parking; The anomaly detection module is used to determine the constant carbon load density of the output first-level or second-level DPF regeneration warning event requiring parking. The result push and display module is used to push the judgment results to the DPF regeneration early warning server work order system and display them on the web page.

[0006] Specifically, a method for monitoring and alerting DPF regeneration in commercial vehicles includes the following sub-steps: S1: Real-time monitoring and collection of vehicle DPF status data; The data monitoring and acquisition module collects basic vehicle information and monitors and collects vehicle DPF status data in real time through the vehicle's pre-installed or aftermarket vehicle Tbox. The basic vehicle information includes vehicle model, series, license plate number, engine model, Tbox version number, GPS location, vehicle VIN code, vehicle speed, throttle opening, mileage, contact information, etc. The vehicle DPF status data includes carbon load density, DPF carbon load indicator status signal, and regeneration prohibition switch status.

[0007] S2: Determine whether to output a DPF parking regeneration warning event; The DPF regeneration warning recognition module determines whether a vehicle needs to generate a warning alert based on the collected vehicle DPF status data, including the following sub-steps: S21: Determine whether to output a warning event for a first-level DPF requiring vehicle parking and regeneration; The DPF regeneration early warning identification module is pre-set with a time threshold T1 and a service regeneration density range for carbon loading density. The specific judgment method is as follows: The system identifies when the DPF carbon loading indicator light changes from off to continuously lit, and the duration of the continuously lit state exceeds the time threshold T1 within the judgment window. Within the judgment window, fault codes are monitored to detect whether the vehicle has a fault that would cause parking regeneration failure; such faults include sensor failure, excessive DPF blockage, etc. If the vehicle does not experience a fault that would cause parking regeneration failure within the judgment window, read the regeneration prohibition switch signal of the vehicle control system. If the regeneration prohibition switch signal does not indicate that the regeneration prohibition switch is pressed, the vehicle is not in the regeneration prohibition state. Output the Level 1 DPF parking regeneration warning event, along with the event start time, GPS location, carbon load density, and vehicle VIN code; the start time is the timestamp of this moment. S22: Determine whether to output a warning event for a secondary DPF requiring vehicle parking and regeneration; If the carbon load density is within the set service regeneration density range while outputting the Level 1 DPF parking regeneration warning event, then output the Level 2 DPF parking regeneration warning event; output the Level 2 DPF parking regeneration warning event and the event start time, GPS location, carbon load density, and vehicle VIN code; the start time is the timestamp of this moment.

[0008] S3: Determine whether the output DPF parking regeneration warning event is a normal active service event; The anomaly detection module performs a constant carbon load density judgment on the output of the first or second level DPF parking regeneration warning event. Pre-set the driving distance A, vehicle speed threshold V, and throttle opening threshold; Specifically, starting from the start time of the first or second level DPF parking regeneration warning event, based on the VIN code of the vehicle corresponding to the event, the basic vehicle information collected within the preset driving mileage A is obtained, and driving mileage segments with vehicle speed greater than, vehicle speed threshold V and throttle opening greater than the throttle opening threshold are filtered out. The carbon load density is constant for the selected mileage segments. If the carbon load density is the same non-zero value in all mileage segments, the vehicle is judged to have a constant carbon load density, and the first or second level DPF parking regeneration warning event is marked as an abnormal active service event. If the carbon load density is different non-zero value in all mileage segments, the first or second level DPF parking regeneration warning event is marked as a normal active service event. S4: Determine whether to output the complete DPF regeneration warning event; When the DPF regeneration warning identification module detects a Level 1 or DPF parking regeneration warning event, and the DPF carbon load indicator light status signal does not meet the conditions for a Level 1 or DPF parking regeneration warning event, it outputs the complete DPF regeneration warning event, the corresponding end time, and the event duration. The end time is the timestamp of this moment, and the duration of the event is obtained from the start time of the first-level or second-level DPF parking regeneration warning event and the end time.

[0009] Furthermore, to determine whether there are any abnormal fluctuations in carbon loading density, the specific judgment method is as follows: For three consecutive sampling windows of carbon loading density, if the following conditions are met simultaneously: The first data acquisition window meets the Level 1 DPF parking regeneration warning event; The second data acquisition window meets the level 2 DPF parking regeneration warning event; (3) The third acquisition window meets the early warning event of the first-level DPF requiring parking and regeneration; Then mark the event as exception event 1; For three consecutive sampling windows of carbon loading density, if the following conditions are met simultaneously: (1) The first acquisition window meets the warning event of the second-level DPF requiring parking and regeneration; (2) The second acquisition window meets the early warning event of the first-level DPF requiring parking and regeneration; (3) The third acquisition window meets the warning event of the second-level DPF requiring parking and regeneration; Then mark the event as exception event 2.

[0010] S5: Push the work order to the DPF regeneration early warning server system and display it on the web page; The result push and display module will push the first or second level DPF parking regeneration warning event output by the DPF regeneration warning identification module, the vehicle information corresponding to the event, the timestamp of the moment, and the abnormal active service event or normal active service event marked in step S4 to the DPF regeneration warning service work order system. The DPF regeneration early warning service ticket system is a web page. The web page synchronously generates a list of regeneration early warning events to be displayed to the corresponding repair shops. The list of regeneration early warning events includes vehicle information, the vehicle's first or second level DPF regeneration early warning event requiring parking, start time, end time, etc. The repair shop proactively contacts the driver based on the contact information in the vehicle information displayed on the web page, and provides the driver with vehicle regeneration warning status information and suggested handling methods in combination with abnormal proactive service events or normal proactive service events.

[0011] Compared with the prior art, the beneficial effects of the present invention are as follows: This method, through DPF regeneration early warning monitoring and system-generated reminder events, allows drivers to more intuitively understand the working status of the DPF system, avoiding operational errors caused by incorrect understanding of status indicators and reducing the driver's workload.

[0012] With timely DPF regeneration warnings, drivers and repair shops can take action before problems become serious, avoiding power loss, torque limitation, or even engine damage caused by DPF issues, thus reducing vehicle maintenance costs and operational risks. By pushing early warning information to the DPF regeneration early warning service ticket system and displaying it through a web page, repair shops and drivers can be notified immediately, ensuring that problems are handled in a timely manner, reducing the need for manual intervention and improving work efficiency. It not only provides basic vehicle information, but also displays detailed warning content according to different statuses. Repair shops can directly contact drivers through the platform, realizing information sharing and an instant response mechanism, which helps to improve the timeliness and accuracy of repairs. Attached Figure Description

[0013] Figure 1 This is a flowchart illustrating the steps of a commercial vehicle DPF regeneration early warning monitoring and reminder method according to the present invention. Detailed Implementation

[0014] To provide a further understanding of the purpose, structure, features, and functions of the present invention, detailed descriptions are provided below with reference to specific embodiments.

[0015] like Figure 1 As shown, a commercial vehicle DPF regeneration early warning monitoring and reminder system includes a data monitoring and acquisition module, a DPF regeneration early warning identification module, an anomaly judgment module, and a result push and display module. The data monitoring and acquisition module is used to collect basic vehicle information, DPF status data, etc. The DPF regeneration warning identification module is used to determine whether to output a DPF regeneration warning event requiring parking; The anomaly detection module is used to determine the constant carbon load density of the output first-level or second-level DPF regeneration warning event requiring parking. The result push and display module is used to push the judgment results to the DPF regeneration early warning server work order system and display them on the web page.

[0016] Specifically, a method for monitoring and alerting DPF regeneration in commercial vehicles includes the following sub-steps: S1: Real-time monitoring and collection of vehicle DPF status data; The data monitoring and acquisition module collects basic vehicle information and monitors and collects vehicle DPF status data in real time through the vehicle's pre-installed or aftermarket vehicle Tbox. The basic vehicle information includes vehicle model, series, license plate number, engine model, Tbox version number, GPS location, vehicle VIN code, vehicle speed, throttle opening, mileage, contact information, etc. The vehicle DPF status data includes carbon load density, DPF carbon load indicator status signal, and regeneration disable switch status; the DPF carbon load indicator status signal is stored in the engine EMS. By monitoring and collecting vehicle DPF status data in real time (such as carbon load density, DPF carbon load indicator status signal, etc.), the working status and operation of the vehicle's DPF can be grasped at any time; overcoming the shortcomings of traditional methods that rely on the driver to manually judge the DPF status.

[0017] S2: Determine whether to output a DPF parking regeneration warning event; The DPF regeneration warning recognition module determines whether a vehicle needs to generate a warning alert based on the collected vehicle DPF status data, including the following sub-steps: S21: Determine whether to output a warning event for a first-level DPF requiring vehicle parking and regeneration; The DPF regeneration early warning identification module is pre-set with a time threshold T1 and a service regeneration density range for carbon loading density. The specific judgment method is as follows: The system identifies when the DPF carbon loading indicator light changes from off to continuously lit, and the duration of the continuously lit state exceeds the time threshold T1 within the judgment window. Within the judgment window, fault codes are monitored to detect whether the vehicle has a fault that would cause parking regeneration failure; such faults include sensor failure, excessive DPF blockage, etc. If the vehicle does not experience a fault that would cause parking regeneration failure within the judgment window, read the regeneration prohibition switch signal of the vehicle control system. If the regeneration prohibition switch signal does not indicate that the regeneration prohibition switch is pressed, the vehicle is not in the regeneration prohibition state. Output the Level 1 DPF parking regeneration warning event, along with the event start time, GPS location, carbon load density, and vehicle VIN code; the start time is the timestamp of this moment. S22: Determine whether to output a warning event for a secondary DPF requiring vehicle parking and regeneration; If the carbon load density is within the set service regeneration density range while outputting the Level 1 DPF parking regeneration warning event, then output the Level 2 DPF parking regeneration warning event; output the Level 2 DPF parking regeneration warning event and the event start time, GPS location, carbon load density, and vehicle VIN code; the start time is the timestamp of this moment.

[0018] Based on changes in the vehicle's DPF carbon load and carbon load density, the system determines whether the DPF regeneration process needs to be initiated. Through the setting of first-level and second-level warning events, the system can promptly remind drivers and maintenance personnel whether the DPF needs regeneration, thereby avoiding DPF overload problems caused by untimely regeneration. The multi-stage warning mechanism (first-level and second-level warnings) improves the precision of the judgment.

[0019] S3: Determine whether the output DPF parking regeneration warning event is a normal active service event; The anomaly detection module performs a constant carbon load density judgment on the output of the first or second level DPF parking regeneration warning event. Pre-set the driving distance A, vehicle speed threshold V, and throttle opening threshold; Specifically, starting from the start time of the first or second level DPF parking regeneration warning event, based on the VIN code of the vehicle corresponding to the event, the basic vehicle information collected within the preset driving mileage A is obtained, and driving mileage segments with vehicle speed greater than, vehicle speed threshold V and throttle opening greater than the throttle opening threshold are filtered out. The carbon load density is constant for the selected mileage segments. If the carbon load density is the same non-zero value in all mileage segments, the vehicle is judged to have a constant carbon load density, and the first or second level DPF parking regeneration warning event is marked as an abnormal active service event. If the carbon load density is different non-zero value in all mileage segments, the first or second level DPF parking regeneration warning event is marked as a normal active service event.

[0020] By judging the constant value of carbon load density, the system can further analyze whether there is abnormal carbon load accumulation in the vehicle, and provide proactive service or maintenance suggestions based on this judgment, avoiding vehicle power limitation or DPF damage caused by excessive carbon load; by incorporating the judgment of constant carbon load density into the DPF regeneration early warning system, the accuracy of the analysis is improved by combining it with vehicle driving conditions (such as vehicle speed, throttle opening, etc.).

[0021] S4: Determine whether to output the complete DPF regeneration warning event; When the DPF regeneration warning identification module detects a Level 1 or DPF parking regeneration warning event, and the DPF carbon load indicator light status signal does not meet the conditions for a Level 1 or DPF parking regeneration warning event, it outputs the complete DPF regeneration warning event, the corresponding end time, and the event duration. The end time is the timestamp of this moment, and the duration of the event is obtained from the start time of the first-level or second-level DPF parking regeneration warning event and the end time.

[0022] Furthermore, to determine whether there are any abnormal fluctuations in carbon loading density, the specific judgment method is as follows: For three consecutive sampling windows of carbon loading density, if the following conditions are met simultaneously: The first data acquisition window meets the Level 1 DPF parking regeneration warning event; The second data acquisition window meets the level 2 DPF parking regeneration warning event; (3) The third acquisition window meets the early warning event of the first-level DPF requiring parking and regeneration; Then mark the event as exception event 1; For three consecutive sampling windows of carbon loading density, if the following conditions are met simultaneously: (1) The first acquisition window meets the warning event of the second-level DPF requiring parking and regeneration; (2) The second acquisition window meets the early warning event of the first-level DPF requiring parking and regeneration; (3) The third acquisition window meets the warning event of the second-level DPF requiring parking and regeneration; Then mark the event as exception event 2.

[0023] Because the collected carbon loading density may oscillate around the lower limit of the carbon loading density threshold for the secondary DPF regeneration warning, it may affect the output of the first or second DPF regeneration warning event. Therefore, anomaly identification is required. The identification and recording of anomaly event 1 and anomaly event 2 will facilitate the later assessment of whether the carbon loading oscillation will affect the output of the first or second level DPF regeneration warning event.

[0024] S5: Push the work order to the DPF regeneration early warning server system and display it on the web page; The result push and display module will push the first or second level DPF parking regeneration warning event output by the DPF regeneration warning identification module, the vehicle information corresponding to the event, the timestamp of the moment, and the abnormal active service event or normal active service event marked in step S4 to the DPF regeneration warning service work order system. The DPF regeneration early warning service ticket system is a web page. The web page synchronously generates a list of regeneration early warning events to be displayed to the corresponding repair shops. The list of regeneration early warning events includes vehicle information, the vehicle's first or second level DPF regeneration early warning event requiring parking, start time, end time, etc. The repair shop proactively contacts the driver based on the contact information in the vehicle information displayed on the web page, and provides the driver with vehicle regeneration warning status information and suggested handling methods in combination with abnormal proactive service events or normal proactive service events.

[0025] By proactively categorizing events through an anomaly detection module (e.g., labeling them as "abnormal proactive service events" or "normal proactive service events"), service providers can respond differently based on the actual situation. This process better optimizes vehicle management and reduces the occurrence of malfunctions.

[0026] The present invention has been described in the above-described embodiments; however, these embodiments are merely examples for implementing the present invention. It must be noted that the disclosed embodiments do not limit the scope of the present invention. Conversely, any modifications and refinements made without departing from the spirit and scope of the present invention are within the scope of patent protection of the present invention.

Claims

1. A method for monitoring and reminding commercial vehicle DPF regeneration early warning system, characterized in that: Includes the following steps: S1: Real-time monitoring and collection of vehicle DPF status data; The data monitoring and acquisition module collects basic vehicle information and monitors and collects vehicle DPF status data in real time through the vehicle's pre-installed or aftermarket vehicle Tbox. S2: Determine whether to output a DPF parking regeneration warning event; The DPF regeneration warning recognition module determines whether a vehicle needs to generate a warning alert based on the collected vehicle DPF status data, including the following sub-steps: S21: Determine whether to output a warning event for a first-level DPF requiring vehicle parking and regeneration; S22: Determine whether to output a warning event for a secondary DPF requiring vehicle parking and regeneration; S3: Determine whether the output DPF parking regeneration warning event is a normal active service event; The anomaly detection module performs a constant carbon load density judgment on the output of the first or second level DPF parking regeneration warning event, and determines whether the output DPF parking regeneration warning event is a normal active service event, an abnormal active service event, or a normal active service event. S4: Determine whether to output the complete DPF regeneration warning event; S5: Push the work order to the DPF regeneration early warning server system and display it on the web page.

2. The commercial vehicle DPF regeneration early warning monitoring and reminder method as described in claim 1, characterized in that: In step S1, the basic vehicle information includes vehicle model, vehicle series, license plate number, engine model, Tbox version number, GPS location, vehicle VIN code, vehicle speed, throttle opening, mileage, and contact information. The vehicle DPF status data includes carbon load density and DPF carbon load indicator status signal.

3. The commercial vehicle DPF regeneration early warning monitoring and reminder method as described in claim 1, characterized in that: The specific details of step S2 are as follows: S21: Determine whether to output a warning event for a first-level DPF requiring vehicle parking and regeneration; The DPF regeneration early warning identification module is pre-set with a time threshold T1 and a service regeneration density range for carbon loading density. The specific judgment method is as follows: The system identifies when the DPF carbon loading indicator light changes from off to continuously lit, and the duration of the continuously lit state exceeds the time threshold T1 within the judgment window. Within the judgment window, fault codes are monitored to detect whether the vehicle has a fault that would cause parking regeneration failure. If the vehicle does not experience a fault that would cause parking regeneration failure within the judgment window, read the regeneration prohibition switch signal of the vehicle control system. If the regeneration prohibition switch signal does not indicate that the regeneration prohibition switch is pressed, the vehicle is not in the regeneration prohibition state. Output the Level 1 DPF parking regeneration warning event, along with the event start time, GPS location, carbon load density, and vehicle VIN code; the start time is the timestamp of this moment. S22: Determine whether to output a warning event for a secondary DPF requiring vehicle parking and regeneration; If a Level 1 DPF requiring parking and regeneration warning event is output while the carbon load density is within the set service regeneration density range, then a Level 2 DPF requiring parking and regeneration warning event is output. Output the secondary DPF requiring vehicle parking for regeneration warning event, along with the event start time, GPS location, carbon load density, and vehicle VIN code; the start time is the timestamp of this moment.

4. The commercial vehicle DPF regeneration early warning monitoring and reminder method as described in claim 1, characterized in that: The specific details of step S3 are as follows: The anomaly detection module performs a constant carbon load density judgment on the output of the first or second level DPF parking regeneration warning event. Pre-set the driving distance A, vehicle speed threshold V, and throttle opening threshold; Starting from the start time of the first or second level DPF parking regeneration warning event, based on the VIN code of the vehicle corresponding to the event, the basic vehicle information collected within the preset driving mileage A is obtained, and driving mileage segments with vehicle speed greater than, vehicle speed threshold V and throttle opening greater than the throttle opening threshold are filtered out. The carbon load density is constant for the selected mileage segments. If the carbon load density is the same non-zero value in all mileage segments, the vehicle is judged to have a constant carbon load density, and the first or second level DPF parking regeneration warning event is marked as an abnormal active service event. If the carbon load density is different non-zero value in all mileage segments, the first or second level DPF parking regeneration warning event is marked as a normal active service event.

5. The commercial vehicle DPF regeneration early warning monitoring and reminder method as described in claim 1, characterized in that: The specific details of step S4 are as follows: When the DPF regeneration warning identification module detects a Level 1 or DPF parking regeneration warning event, and the DPF carbon load indicator light status signal does not meet the conditions for a Level 1 or DPF parking regeneration warning event, it outputs the complete DPF regeneration warning event, the corresponding end time, and the event duration. The end time is the timestamp of this moment, and the duration of the event is obtained from the start time of the first-level or second-level DPF parking regeneration warning event and the end time.

6. The commercial vehicle DPF regeneration early warning monitoring and reminder method as described in claim 1, characterized in that: The specific details of step S5 are as follows: The result push and display module will push the first or second level DPF parking regeneration warning event output by the DPF regeneration warning identification module, the vehicle information corresponding to the event, the timestamp of the moment, and the marked abnormal active service event or normal active service event to the DPF regeneration warning server work order system. The DPF regeneration early warning server-side work order system is a web page, which synchronously generates and displays a list of regeneration early warning events to the corresponding maintenance organizations. The repair shop proactively contacts the driver based on the contact information in the vehicle information displayed on the web page, and provides the driver with vehicle regeneration warning status information and suggested handling methods in combination with abnormal proactive service events or normal proactive service events.

7. A commercial vehicle DPF regeneration early warning monitoring and reminder system for implementing the methods described in claims 1-5, characterized in that: It includes a data monitoring and acquisition module, a DPF regeneration early warning and identification module, an anomaly judgment module, and a result push and display module; The data monitoring and acquisition module is used to collect basic vehicle information and DPF status data; The DPF regeneration warning identification module is used to determine whether to output a DPF regeneration warning event requiring parking; The anomaly detection module is used to determine the constant carbon load density of the output first-level or second-level DPF regeneration warning event requiring parking. The result push and display module is used to push the judgment results to the DPF regeneration early warning server work order system and display them on the web page.

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