Vehicle emissions remote monitoring system and method

Abstract

The application discloses a vehicle emission remote monitoring system and method, which comprises: a vehicle terminal, which is used for conducting on-off inspection on a remote platform and an engine terminal respectively when vehicle starting is monitored; when the inspection result indicates that signal transmission is normal, historical engine operation parameters in a preset period are read from the engine terminal and sent to the remote platform; the remote platform is used for extracting first engine parameters when the vehicle runs to a preset first working condition from the historical engine operation parameters; based on the first engine parameters, the engine operation state of the vehicle is determined and it is judged whether the sensor signal is credible; if yes, second engine parameters when the vehicle runs to a preset second working condition are extracted; according to the second engine parameters, it is determined whether the vehicle has emission deterioration; if yes, a fault signal is generated and sent to the vehicle terminal. By using the application, the ECU data of the vehicle can be prevented from being tampered, and the monitored emission data can truly reflect the actual emission condition of the vehicle.

Description

Technical Field

[0001] This application relates to the field of vehicle emission monitoring technology, and in particular to a vehicle emission remote monitoring system and method. Background Technology

[0002] With the continuous increase in the number of motor vehicles, the environmental pollution caused by vehicle exhaust emissions has received increasing attention. In particular, for natural gas engine vehicles, the control of nitrogen oxide (NOx) emissions is a crucial aspect of environmental protection. To effectively monitor vehicle emissions and ensure compliance with environmental standards, a technological means is needed to monitor vehicle emissions in real time and accurately.

[0003] In related technologies, vehicle emissions monitoring primarily relies on the vehicle's engine control unit (ECU) and on-board diagnostic (OBD) system. These systems determine whether vehicle emissions are normal by monitoring engine operating parameters such as oxygen sensor output values, fuel flow, and intake air volume. However, vehicle ECU data is easily tampered with, causing the monitored emissions data to fail to accurately reflect the vehicle's actual emissions. Summary of the Invention

[0004] This application provides a vehicle emissions remote monitoring system and method. To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general description, nor is it intended to identify key / important components or describe the scope of protection of these embodiments. Its sole purpose is to present some concepts in a simple form as a prelude to the detailed description that follows.

[0005] In a first aspect, embodiments of this application provide a vehicle emission remote monitoring system, the system comprising:

[0006] The system comprises a remote platform, a vehicle terminal, and an engine terminal; the vehicle terminal is communicatively connected to both the remote platform and the engine terminal.

[0007] The vehicle terminal is used to perform continuity checks on the remote platform and the engine when the vehicle is detected to be starting. When the continuity check result indicates that the transmission of the signal is normal, the terminal reads the historical engine operating parameters within a preset period from the engine and sends them to the remote platform.

[0008] The remote platform is used to extract the first engine parameters when the vehicle is running to a preset first operating condition from historical engine operating parameters; based on the first engine parameters, determine the vehicle's engine operating status and determine whether the sensor signals are reliable; when the engine operating status is in operation and the sensor signals are reliable, extract the second engine parameters when the vehicle is running to a preset second operating condition from historical engine operating parameters; based on the second engine parameters, determine whether the vehicle has emission degradation; if so, generate a vehicle fault signal and send it to the vehicle terminal.

[0009] Optionally, the vehicle terminal is also used to send fault signals to the engine.

[0010] On the engine side, it is used to respond to fault signals and execute alarm reminders.

[0011] Optionally, continuity checks can be performed on both the remote platform and the engine, including:

[0012] Create a data request for reading data of any type from the engine and send it to the engine.

[0013] When data is received from the engine within a preset first time period, a result indicating normal signal transmission between the engine and the system is generated; or, when no data signal is received from the engine within a preset first time period, a result indicating abnormal signal transmission between the engine and the system is generated.

[0014] Obtain handshake data used to establish a connection with the remote platform and send it to the remote platform;

[0015] If the handshake data is successfully sent within the preset second time period, a result indicating normal signal transmission with the remote platform is generated; or, if the handshake data fails to be sent within the preset second time period, a result indicating abnormal signal transmission with the remote platform is generated.

[0016] Optionally, the first engine parameters include engine fuel flow rate, intake air volume, three-way catalytic converter temperature, front oxygen sensor output value, and rear oxygen sensor output value.

[0017] Based on the first engine parameters, the vehicle's engine operating status is determined and the reliability of sensor signals is assessed, including:

[0018] When the engine fuel flow, intake air volume, and three-way catalytic converter temperature are all not empty, the vehicle's engine operating status is determined to be the operating status.

[0019] Compare the output value of the previous oxygen sensor with the preset first sensor value, and compare the output value of the subsequent oxygen sensor with the preset second sensor value; the preset first sensor value is greater than the preset second sensor value.

[0020] When the output value of the front oxygen sensor is greater than the preset first sensor value and the output value of the rear oxygen sensor is less than the preset second sensor value, the sensor signals of the vehicle are determined to be reliable.

[0021] Optionally, the vehicle is determined to operate in a preset first condition by following these steps:

[0022] The first after-processing temperature was read from the historical engine operating parameters in chronological order.

[0023] When the first post-treatment temperature reaches the preset first temperature threshold, the total first towing time of the first towing condition of the vehicle is analyzed.

[0024] When the total duration of the first reverse towing exceeds a preset duration threshold, it is determined that the vehicle is in a continuous reverse towing condition and that the vehicle has reached the preset first condition.

[0025] Optionally, the second engine parameters include the target post-oxygen sensor output value;

[0026] Based on the second engine parameters, determine whether the vehicle exhibits emissions degradation, including:

[0027] When the output value of the target oxygen sensor exceeds the preset target sensor value after a preset time, it is determined that the vehicle does not have emissions degradation; or...

[0028] If the output value of the oxygen sensor after the target is greater than or equal to the preset target sensor value within a preset time period, it is determined that the vehicle has emission degradation.

[0029] Optionally, the vehicle may be operated to a preset second operating condition by following these steps:

[0030] The second after-processing temperature was read from the historical engine operating parameters in chronological order.

[0031] When the second post-processing temperature is greater than the preset second temperature threshold, the total second towing time of the second towing condition of the vehicle is analyzed; the preset second temperature threshold is greater than the preset first temperature threshold.

[0032] When the total duration of the second reverse towing exceeds the preset duration threshold, determine whether the vehicle meets the conditions for resuming fuel supply.

[0033] If the vehicle meets the conditions for resuming fuel supply, determine that the vehicle will operate in the preset second condition.

[0034] Optionally, determine whether the vehicle meets the conditions for resuming fuel supply, including:

[0035] Acquire the torque value within a preset time period when fuel supply is resumed after the second backward dragging condition occurs, and the target after-treatment temperature after fuel supply is resumed;

[0036] When the torque value is greater than the preset threshold and the target after-treatment temperature is greater than the preset temperature threshold, the vehicle is determined to meet the conditions for resuming fuel supply.

[0037] Optionally, execute alarm notifications, including:

[0038] An alarm message is generated based on the fault signal to trigger an alarm.

[0039] Limit the output power of the vehicle's engine;

[0040] Illuminate the malfunction indicator light on the vehicle's dashboard to alert the driver that the vehicle needs repair.

[0041] Secondly, a method for remote monitoring of vehicle emissions, the method comprising:

[0042] When the vehicle terminal detects that the vehicle has started, it performs continuity checks on the remote platform and the engine. When the continuity check result indicates that the transmission of the signal is normal, it reads the historical engine operating parameters within a preset period from the engine and sends them to the remote platform.

[0043] The remote platform extracts the first engine parameters from historical engine operating parameters when the vehicle is running under a preset first operating condition; based on the first engine parameters, it determines the vehicle's engine operating status and judges whether the sensor signals are reliable; when the engine operating status is in operation and the sensor signals are reliable, it extracts the second engine parameters from historical engine operating parameters when the vehicle is running under a preset second operating condition; based on the second engine parameters, it determines whether the vehicle has emission degradation; if so, it generates a vehicle fault signal and sends it to the vehicle terminal.

[0044] The vehicle terminal sends a fault signal to the engine.

[0045] The engine responds to the fault signal and issues an alarm.

[0046] In this embodiment, on the one hand, engine operating parameters are uploaded to a remote platform for analysis via the vehicle terminal, rather than relying on the vehicle's local ECU for data processing and judgment. This remote monitoring method avoids the possibility of tampering with vehicle ECU data, ensuring the authenticity and reliability of the data. On the other hand, analyzing engine operating parameters through a remote platform and combining this with parameter thresholds under preset operating conditions allows for a more accurate identification of the vehicle's actual emissions. This method not only considers the engine's operating status but also verifies the reliability of sensor signals, thereby avoiding misjudgments caused by sensor malfunctions or data anomalies.

[0047] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0048] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0049] Figure 1 This is a schematic diagram of the system structure of a vehicle emission remote monitoring system provided in an embodiment of this application;

[0050] Figure 2 This is a flowchart illustrating a remote vehicle emissions monitoring method provided in an embodiment of this application;

[0051] Figure 3 This is a schematic diagram of the structure of a remote platform provided in an embodiment of this application. Detailed Implementation

[0052] The following description and accompanying drawings fully illustrate specific embodiments of this application to enable those skilled in the art to practice them.

[0053] It should be understood that the described embodiments are merely some, not all, of the embodiments in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0054] In the following description, when referring to the accompanying drawings, the same numbers in different drawings denote the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of systems and methods consistent with some aspects of this application as detailed in the appended claims.

[0055] In the description of this application, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Furthermore, in the description of this application, unless otherwise stated, "multiple" refers to two or more. "And / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship.

[0056] In this embodiment, on the one hand, engine operating parameters are uploaded to a remote platform for analysis via the vehicle terminal, rather than relying on the vehicle's local ECU for data processing and judgment. This remote monitoring method avoids the possibility of tampering with vehicle ECU data, ensuring the authenticity and reliability of the data. On the other hand, analyzing engine operating parameters through a remote platform and combining this with parameter thresholds under preset operating conditions allows for a more accurate identification of the vehicle's actual emissions. This method not only considers the engine's operating status but also verifies the reliability of sensor signals, thereby avoiding misjudgments caused by sensor malfunctions or data anomalies. Exemplary embodiments are described in detail below.

[0057] Please see Figure 1 , Figure 1 This is a schematic diagram of the system structure of a vehicle emission remote monitoring system provided in an embodiment of this application. The system includes: a remote platform, a vehicle terminal, and an engine terminal; the vehicle terminal is communicatively connected to the remote platform and the engine terminal respectively.

[0058] The remote platform refers to a network-based central monitoring system deployed on a server or in the cloud, used for centralized management and analysis of data from each vehicle terminal. The vehicle terminal refers to the equipment installed in the vehicle, used to collect vehicle operating data and communicate with the remote platform and the engine terminal. The engine terminal refers to the vehicle's engine and its control unit (ECU), responsible for the vehicle's power output and operational control.

[0059] In some embodiments of this application, the vehicle terminal is used to perform continuity checks on the remote platform and the engine when the vehicle is detected to be starting; when the continuity check result indicates that the transmission of the signal is normal, the terminal reads the historical engine operating parameters within a preset period from the engine and sends them to the remote platform.

[0060] Among them, continuity check refers to the process by which the vehicle terminal checks whether the communication connection between the vehicle terminal and the remote platform and the engine is normal when the vehicle is started. The historical engine operating parameters within the preset period refer to the engine's operating data over a period of time (such as the past few hours) before the vehicle is started, including oxygen sensor output value, fuel flow, intake air volume, etc.

[0061] Specifically, the process of performing connectivity checks on the remote platform and the engine includes: creating a data request to read any type of data from the engine and sending it to the engine; generating a result indicating normal signal transmission between the engine and the remote platform when data feedback is received within a preset first time period; or generating a result indicating abnormal signal transmission between the engine and the remote platform when no data feedback signal is received within the preset first time period; acquiring handshake data for establishing a connection with the remote platform and sending it to the remote platform; generating a result indicating normal signal transmission between the remote platform when the handshake data is successfully sent within a preset second time period; or generating a result indicating abnormal signal transmission between the remote platform when the handshake data fails to be sent within the preset second time period.

[0062] The data can be of any type, such as engine speed, vehicle speed, or atmospheric pressure.

[0063] In one possible implementation, the vehicle terminal's built-in sensors or monitoring modules detect a vehicle start signal (such as an ignition switch being turned on). The vehicle terminal sends test signals (such as heartbeat or handshake signals) to both the remote platform and the engine. The vehicle terminal waits for response signals from both the remote platform and the engine. If a response signal is received within a preset time (e.g., within a few seconds), the communication link is considered normal; otherwise, fault information is recorded and an alarm may be triggered. After confirming a normal communication link, the vehicle terminal sends a request to the engine to read historical engine operating parameters within a preset period. The engine retrieves the relevant parameters from its storage unit and sends them back to the vehicle terminal. The vehicle terminal packages the historical engine operating parameters obtained from the engine and sends them to the remote platform via the communication module.

[0064] For example, when checking the continuity between the vehicle terminal and the engine, data from the engine is read to determine if the signal transmission between the two is normal. This data could include engine speed, vehicle speed, and atmospheric pressure. If data is transmitted within 30 seconds, the signal transmission is considered normal; otherwise, a fault is identified. In this case, since the engine has not received a data request from the vehicle terminal, it will issue a communication alarm after 30 seconds. Similarly, when checking the continuity between the vehicle terminal and the remote platform, if no data is transmitted to the remote platform within 50 seconds, a signal transmission fault is identified between the two platforms, triggering a communication alarm.

[0065] In some embodiments of this application, a remote platform is configured to extract first engine parameters from historical engine operating parameters when the vehicle is running to a preset first operating condition; determine the engine operating state of the vehicle and determine whether the sensor signal is reliable based on the first engine parameters; when the engine operating state is in operation and the sensor signal is reliable, extract second engine parameters from historical engine operating parameters when the vehicle is running to a preset second operating condition; determine whether the vehicle has emission degradation based on the second engine parameters; if so, generate a vehicle fault signal and send it to the vehicle terminal.

[0066] The first engine parameters include engine fuel flow rate, intake air volume, three-way catalytic converter temperature, front oxygen sensor output value, and rear oxygen sensor output value.

[0067] In some embodiments of this application, the specific process of determining the engine operating state of a vehicle and judging whether the sensor signal is reliable based on the first engine parameters includes: determining the engine operating state of the vehicle as an operating state when the engine fuel flow, intake air volume, and three-way catalytic converter temperature values ​​are all not empty; comparing the output value of the front oxygen sensor with a preset first sensor value, and comparing the output value of the rear oxygen sensor with a preset second sensor value; the preset first sensor value is greater than the preset second sensor value; when the output value of the front oxygen sensor is greater than the preset first sensor value and the output value of the rear oxygen sensor is less than the preset second sensor value, determining that the sensor signal of the vehicle is reliable.

[0068] The preset value of the first sensor is 1.94 volts, and the preset value of the second sensor is 0.12 volts.

[0069] For example, if the output value of the front oxygen sensor is greater than 1.94 volts and the output value of the rear oxygen sensor is less than 0.12 volts, the sensor signals of the vehicle are considered reliable.

[0070] In some embodiments of this application, the specific process of determining that the vehicle has reached a preset first operating condition includes: reading the first after-treatment temperature from historical engine operating parameters in chronological order; when the first after-treatment temperature reaches a preset first temperature threshold, analyzing the first total towing time of the first towing condition; when the first total towing time exceeds a preset time threshold, determining that the vehicle has entered a continuous towing condition and determining that the vehicle has reached the preset first operating condition.

[0071] The preset first temperature threshold is 300℃, and the preset duration threshold is 5 seconds.

[0072] For example, if the first post-treatment temperature is greater than 300°C and the total towing time of the first towing condition is greater than 5 seconds, it is determined that the vehicle has reached the preset first condition.

[0073] The second engine parameter includes the target rear oxygen sensor output value.

[0074] In some embodiments of this application, the specific process of determining whether a vehicle has emission degradation based on the second engine parameters includes: when the output value of the target rear oxygen sensor is greater than the preset target sensor value after a preset time, it is determined that the vehicle has no emission degradation; or, when the output value of the target rear oxygen sensor is greater than or equal to the preset target sensor value within a preset time, it is determined that the vehicle has emission degradation.

[0075] The preset duration is 3 seconds, and the preset target sensor value is 0.65 volts.

[0076] For example, if the target rear oxygen sensor output value reaches 0.65 volts or higher after 3 seconds or more, it is considered normal, and the vehicle does not have emission deterioration. If the target rear oxygen sensor output value reaches 0.65 volts or higher within 3 seconds, the vehicle is considered to need maintenance and inspection, and the vehicle has emission deterioration.

[0077] In some embodiments of this application, the specific process of determining that the vehicle has reached a preset second operating condition includes: reading the second after-treatment temperature from historical engine operating parameters in chronological order; when the second after-treatment temperature is greater than a preset second temperature threshold, analyzing the total second towing time of the vehicle's second towing condition; the preset second temperature threshold is greater than a preset first temperature threshold; when the total second towing time is greater than a preset time threshold, determining whether the vehicle meets the fuel supply recovery condition; and if the vehicle meets the fuel supply recovery condition, determining that the vehicle has reached the preset second operating condition.

[0078] The preset second temperature threshold is 350℃, and the preset duration threshold is 5 seconds. The preset duration threshold is 6 seconds.

[0079] For example, if the second after-treatment temperature is greater than 350°C and the second towing time is greater than 5 seconds, it is determined whether the vehicle meets the conditions for resuming fuel supply.

[0080] In some embodiments of this application, the specific process of determining whether a vehicle meets the conditions for resuming fuel supply includes: obtaining the torque value of the vehicle during a preset time period after resuming fuel supply following the second towing condition, and the target after-treatment temperature after resuming fuel supply; when the torque value is greater than a preset threshold and the target after-treatment temperature is greater than a preset temperature threshold, it is determined that the vehicle meets the conditions for resuming fuel supply.

[0081] The preset time period is 6 seconds. The preset temperature threshold is 250℃.

[0082] For example, when resuming fuel supply, the torque value is greater than 20% within 6 seconds, and is greater than 1% within 6 seconds. At the same time, the aftertreatment temperature after resuming fuel supply needs to be greater than 250℃. At this time, it is determined that the vehicle meets the conditions for resuming fuel supply.

[0083] Alternatively, to determine whether a vehicle meets the conditions for resuming fuel supply, one can identify it by conditions such as an intake air volume greater than 100L / h and an engine fuel flow rate greater than 10L / h.

[0084] It should be noted that the preset target sensor value is 0.65 volts, but it can also be other similar values, such as 0.66 volts, 0.64 volts, etc. The preset duration threshold and other values ​​are just examples.

[0085] In some embodiments of this application, the vehicle terminal is further configured to send a fault signal to the engine terminal; the engine terminal is configured to respond to the fault signal and execute an alarm reminder.

[0086] Specifically, the process of executing the alarm notification includes: generating alarm information based on the fault signal; limiting the output power of the vehicle's engine; and illuminating the fault indicator light on the vehicle's dashboard to prompt the vehicle to undergo maintenance.

[0087] A fault signal is a special signal generated by a remote platform to indicate a vehicle malfunction or abnormality. This signal is sent to the engine via the vehicle terminal. An alarm reminder refers to the engine notifying the driver of a malfunction requiring repair after receiving a fault signal, using various methods. Alarm information is a prompt generated by the engine, typically displayed to the driver through sound, text, or lights to inform them of the malfunction. Limiting output power means that after receiving a fault signal, the engine adjusts its operating parameters (such as fuel injection quantity and ignition timing) to reduce engine output power, thereby reducing vehicle emissions. A malfunction indicator light is an indicator light installed on the vehicle's dashboard to alert the driver to a vehicle malfunction.

[0088] In one possible implementation, the vehicle terminal receives a fault signal from a remote platform and forwards it to the engine. Upon receiving the fault signal from the vehicle terminal, the engine (ECU) initiates a series of alarm and warning actions. The engine generates alarm information based on the fault signal's content. For example, it displays text such as "Emissions fault, please repair as soon as possible" on the instrument panel. The engine adjusts engine operating parameters, such as reducing fuel injection and adjusting ignition timing, thereby reducing engine output power. The engine also illuminates the malfunction indicator light on the vehicle's instrument panel to alert the driver that the vehicle has a fault and requires repair.

[0089] In this embodiment, on the one hand, engine operating parameters are uploaded to a remote platform for analysis via the vehicle terminal, rather than relying on the vehicle's local ECU for data processing and judgment. This remote monitoring method avoids the possibility of tampering with vehicle ECU data, ensuring the authenticity and reliability of the data. On the other hand, analyzing engine operating parameters through a remote platform and combining this with parameter thresholds under preset operating conditions allows for a more accurate identification of the vehicle's actual emissions. This method not only considers the engine's operating status but also verifies the reliability of sensor signals, thereby avoiding misjudgments caused by sensor malfunctions or data anomalies.

[0090] Please see Figure 2 This is a flowchart illustrating a method for remote monitoring of vehicle emissions provided in this application. Figure 2 As shown, the detection method in this application embodiment may include the following steps:

[0091] S101, when the vehicle terminal detects that the vehicle has started, it performs continuity checks on the remote platform and the engine. When the continuity check result indicates that the transmission of the signal is normal, it reads the historical engine operating parameters within a preset period from the engine and sends them to the remote platform.

[0092] In some embodiments of this application, the specific process of performing connectivity checks on the remote platform and the engine includes: creating a data request for reading any type of data from the engine and sending it to the engine; generating a result indicating normal signal transmission between the engine and the engine when data feedback is received within a preset first time period; or generating a result indicating abnormal signal transmission between the engine and the engine when no data feedback signal is received within the preset first time period; acquiring handshake data for establishing a connection with the remote platform and sending it to the remote platform; generating a result indicating normal signal transmission between the remote platform when the handshake data is successfully sent within a preset second time period; or generating a result indicating abnormal signal transmission between the remote platform when the handshake data fails to be sent within the preset second time period.

[0093] S102, the remote platform extracts the first engine parameters when the vehicle is running to a preset first operating condition from the historical engine operating parameters; based on the first engine parameters, it determines the engine operating status of the vehicle and judges whether the sensor signal is reliable; when the engine operating status is in operation and the sensor signal is reliable, it extracts the second engine parameters when the vehicle is running to a preset second operating condition from the historical engine operating parameters; based on the second engine parameters, it determines whether the vehicle has emission degradation; if so, it generates a vehicle fault signal and sends it to the vehicle terminal.

[0094] The first engine parameters include engine fuel flow rate, intake air volume, three-way catalytic converter temperature, front oxygen sensor output value, and rear oxygen sensor output value.

[0095] In some embodiments of this application, the specific process of determining the engine operating state of a vehicle and judging whether the sensor signal is reliable based on the first engine parameters includes: determining the engine operating state of the vehicle as an operating state when the engine fuel flow, intake air volume, and three-way catalytic converter temperature values ​​are all not empty; comparing the output value of the front oxygen sensor with a preset first sensor value, and comparing the output value of the rear oxygen sensor with a preset second sensor value; the preset first sensor value is greater than the preset second sensor value; when the output value of the front oxygen sensor is greater than the preset first sensor value and the output value of the rear oxygen sensor is less than the preset second sensor value, determining that the sensor signal of the vehicle is reliable.

[0096] Specifically, the process of determining that the vehicle has reached the preset first operating condition includes: reading the first after-treatment temperature from the historical engine operating parameters in chronological order; when the first after-treatment temperature reaches the preset first temperature threshold, analyzing the first total towing time of the first towing condition; when the first total towing time exceeds the preset time threshold, determining that the vehicle has entered a continuous towing condition and determining that the vehicle has reached the preset first operating condition.

[0097] The second engine parameter includes the target rear oxygen sensor output value.

[0098] In some embodiments of this application, the specific process of determining whether a vehicle has emission degradation based on the second engine parameters includes: when the output value of the target rear oxygen sensor is greater than the preset target sensor value after a preset time, it is determined that the vehicle has no emission degradation; or, when the output value of the target rear oxygen sensor is greater than or equal to the preset target sensor value within a preset time, it is determined that the vehicle has emission degradation.

[0099] Specifically, the process of determining that the vehicle is operating in the preset second operating condition includes: reading the second after-treatment temperature from historical engine operating parameters in chronological order; when the second after-treatment temperature is greater than the preset second temperature threshold, analyzing the total second towing time of the vehicle in the second towing condition; the preset second temperature threshold is greater than the preset first temperature threshold; when the total second towing time is greater than the preset time threshold, determining whether the vehicle meets the fuel supply recovery condition; and if the vehicle meets the fuel supply recovery condition, determining that the vehicle is operating in the preset second operating condition.

[0100] Specifically, the process of determining whether a vehicle meets the conditions for resuming fuel supply includes: obtaining the torque value within a preset time period when the vehicle resumes fuel supply after the second dragging condition occurs, and the target after-treatment temperature after resuming fuel supply; when the torque value is greater than a preset threshold and the target after-treatment temperature is greater than a preset temperature threshold, the vehicle is determined to meet the conditions for resuming fuel supply.

[0101] S103, the vehicle terminal sends a fault signal to the engine.

[0102] S104, the engine responds to the fault signal and executes an alarm reminder.

[0103] In some embodiments of this application, the specific process of performing the alarm reminder includes: generating alarm information and issuing an alarm through a fault signal; limiting the output power of the vehicle's engine; and illuminating the fault indicator light on the vehicle's dashboard to prompt the vehicle to undergo maintenance.

[0104] In this embodiment, on the one hand, engine operating parameters are uploaded to a remote platform for analysis via the vehicle terminal, rather than relying on the vehicle's local ECU for data processing and judgment. This remote monitoring method avoids the possibility of tampering with vehicle ECU data, ensuring the authenticity and reliability of the data. On the other hand, analyzing engine operating parameters through a remote platform and combining this with parameter thresholds under preset operating conditions allows for a more accurate identification of the vehicle's actual emissions. This method not only considers the engine's operating status but also verifies the reliability of sensor signals, thereby avoiding misjudgments caused by sensor malfunctions or data anomalies.

[0105] This application also provides a computer-readable medium having program instructions stored thereon, which, when executed by a processor, implement the vehicle emission remote monitoring method provided in the above-described method embodiments.

[0106] This application also provides a computer program product containing instructions that, when run on a computer, cause the computer to execute the vehicle emissions remote monitoring method of the various method embodiments described above.

[0107] Please see Figure 3 This is a schematic diagram of the structure of a remote platform provided in an embodiment of this application. Figure 3 As shown, the remote platform 1000 may include: at least one processor 1001, at least one network interface 1004, a user interface 1003, a memory 1005, and at least one communication bus 1002.

[0108] The communication bus 1002 is used to realize the connection and communication between these components.

[0109] The user interface 1003 may include a display screen and a camera. Optionally, the user interface 1003 may also include a standard wired interface and a wireless interface.

[0110] The network interface 1004 may optionally include a standard wired interface or a wireless interface (such as a Wi-Fi interface).

[0111] The processor 1001 may include one or more processing cores. The processor 1001 connects to various parts within the remote platform 1000 using various interfaces and lines. It executes various functions and processes data of the remote platform 1000 by running or executing instructions, programs, code sets, or instruction sets stored in the memory 1005, and by calling data stored in the memory 1005. Optionally, the processor 1001 may be implemented using at least one hardware form of Digital Signal Processing (DSP), Field-Programmable Gate Array (FPGA), or Programmable Logic Array (PLA). The processor 1001 may integrate one or more of the following: a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), and a modem. The CPU primarily handles the operating system, user interface, and applications; the GPU is responsible for rendering and drawing the content to be displayed on the screen; and the modem handles wireless communication. It is understood that the modem may also be implemented as a separate chip without being integrated into the processor 1001.

[0112] The memory 1005 may include random access memory (RAM) or read-only memory. Optionally, the memory 1005 may include a non-transitory computer-readable storage medium. The memory 1005 can be used to store instructions, programs, code, code sets, or instruction sets. The memory 1005 may include a program storage area and a data storage area, wherein the program storage area may store instructions for implementing an operating system, instructions for at least one function (such as touch function, sound playback function, image playback function, etc.), instructions for implementing the above-described method embodiments, etc.; the data storage area may store data involved in the above-described method embodiments, etc. Optionally, the memory 1005 may also be at least one storage system located remotely from the aforementioned processor 1001. Figure 3 As shown, the memory 1005, which serves as a computer storage medium, may include an operating system, a network communication module, a user interface module, and a vehicle emissions remote monitoring application.

[0113] exist Figure 3 In the remote platform 1000 shown, the user interface 1003 is mainly used to provide an input interface for the user and to obtain the user input data; while the processor 1001 can be used to call the vehicle emission remote monitoring application stored in the memory 1005 and specifically perform the following operations:

[0114] When the vehicle terminal detects that the vehicle has started, it performs continuity checks on the remote platform and the engine. When the continuity check result indicates that the transmission of the signal is normal, it reads the historical engine operating parameters within a preset period from the engine and sends them to the remote platform.

[0115] The remote platform extracts the first engine parameters from historical engine operating parameters when the vehicle is running under a preset first operating condition; based on the first engine parameters, it determines the vehicle's engine operating status and judges whether the sensor signals are reliable; when the engine operating status is in operation and the sensor signals are reliable, it extracts the second engine parameters from historical engine operating parameters when the vehicle is running under a preset second operating condition; based on the second engine parameters, it determines whether the vehicle has emission degradation; if so, it generates a vehicle fault signal and sends it to the vehicle terminal.

[0116] The vehicle terminal sends a fault signal to the engine.

[0117] The engine responds to the fault signal and issues an alarm.

[0118] In this embodiment, on the one hand, engine operating parameters are uploaded to a remote platform for analysis via the vehicle terminal, rather than relying on the vehicle's local ECU for data processing and judgment. This remote monitoring method avoids the possibility of tampering with vehicle ECU data, ensuring the authenticity and reliability of the data. On the other hand, analyzing engine operating parameters through a remote platform and combining this with parameter thresholds under preset operating conditions allows for a more accurate identification of the vehicle's actual emissions. This method not only considers the engine's operating status but also verifies the reliability of sensor signals, thereby avoiding misjudgments caused by sensor malfunctions or data anomalies.

[0119] Those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by a computer program instructing related hardware. The vehicle emission remote monitoring program can be stored in a computer-readable storage medium. When executed, the program can include the processes of the embodiments of the above methods. The storage medium for the vehicle emission remote monitoring program can be a magnetic disk, optical disk, read-only memory, or random access memory, etc.

[0120] The above-disclosed embodiments are merely preferred embodiments of this application and should not be construed as limiting the scope of this application. Therefore, any equivalent variations made in accordance with the claims of this application shall still fall within the scope of this application.

Claims

1. A vehicle emission remote monitoring system, characterized in that, The system includes: The system comprises a remote platform, a vehicle terminal, and an engine; the vehicle terminal is communicatively connected to both the remote platform and the engine. The vehicle terminal is used to perform continuity checks on the remote platform and the engine when the vehicle is detected to be starting; when the continuity check result indicates that the transmission is normal, it reads the historical engine operating parameters within a preset period from the engine and sends them to the remote platform. The remote platform is used to extract first engine parameters from the historical engine operating parameters when the vehicle is running to a preset first operating condition; based on the first engine parameters, determine the engine operating state of the vehicle and determine whether the sensor signal is reliable; when the engine operating state is in operation and the sensor signal is reliable, extract second engine parameters from the historical engine operating parameters when the vehicle is running to a preset second operating condition; determine whether the vehicle has emission degradation based on the second engine parameters; if so, generate a vehicle fault signal and send it to the vehicle terminal; The steps for determining that the vehicle has reached a preset first operating condition include: reading the first after-treatment temperature from the historical engine operating parameters in chronological order; analyzing the first total towing time of the first towing condition when the first after-treatment temperature reaches a preset first temperature threshold; and determining that the vehicle has reached the preset first operating condition when the first total towing time exceeds a preset time threshold. The process of determining that the vehicle is operating in a preset second condition includes the following steps: reading the second after-treatment temperature from the historical engine operating parameters in chronological order; analyzing the total second towing time of the vehicle in the second towing condition when the second after-treatment temperature is greater than a preset second temperature threshold; the preset second temperature threshold being greater than a preset first temperature threshold; determining whether the vehicle meets the fuel supply recovery condition when the total second towing time is greater than a preset time threshold; and determining that the vehicle is operating in the preset second condition when the vehicle meets the fuel supply recovery condition.

2. The system according to claim 1, characterized in that, The vehicle terminal is also used to send the fault signal to the engine terminal; The engine end is used to execute an alarm reminder in response to the fault signal.

3. The system according to claim 1, characterized in that, The connection / disconnection checks performed on the remote platform and the engine end respectively include: Create a data request for reading any type of data from the engine and send it to the engine. When data is received from the engine during a preset first time period, a result indicating normal signal transmission between the engine and the engine is generated; or, when no data signal is received from the engine during the preset first time period, a result indicating abnormal signal transmission between the engine and the engine is generated. Acquire handshake data for establishing a connection with the remote platform and send it to the remote platform; If the handshake data is successfully sent within a preset second time period, a result indicating normal signal transmission with the remote platform is generated; or, if the handshake data fails to be sent within the preset second time period, a result indicating abnormal signal transmission with the remote platform is generated.

4. The system according to claim 1, characterized in that, The first engine parameters include engine fuel flow rate, intake air volume, three-way catalytic converter temperature, front oxygen sensor output value, and rear oxygen sensor output value; The step of determining the engine operating status of the vehicle and judging whether the sensor signal is reliable based on the first engine parameters includes: If the engine fuel flow rate, intake air volume, and three-way catalytic converter temperature values ​​are all not empty, the engine operating state of the vehicle is determined to be the operating state. The output value of the front oxygen sensor is compared with a preset first sensor value, and the output value of the rear oxygen sensor is compared with a preset second sensor value; the preset first sensor value is greater than the preset second sensor value. When the output value of the front oxygen sensor is greater than the preset first sensor value and the output value of the rear oxygen sensor is less than the preset second sensor value, the sensor signals of the vehicle are determined to be reliable.

5. The system according to claim 1, characterized in that, The second engine parameter includes the target rear oxygen sensor output value; The step of determining whether the vehicle has emissions degradation based on the second engine parameters includes: When the output value of the target oxygen sensor is greater than the preset target sensor value after a preset time, it is determined that the vehicle does not have emission deterioration. or, If the output value of the oxygen sensor after the target is greater than or equal to the preset target sensor value within a preset time period, it is determined that the vehicle has emission degradation.

6. The system according to claim 1, characterized in that, The determination of whether the vehicle meets the conditions for resuming fuel supply includes: The torque value of the vehicle during a preset time period after resuming fuel supply following the second backward dragging condition, and the target after-treatment temperature after resuming fuel supply are obtained. When the torque value is greater than a preset threshold and the target after-treatment temperature is greater than a preset temperature threshold, the vehicle is determined to meet the conditions for resuming fuel supply.

7. The system according to claim 2, characterized in that, The execution of alarm notifications includes: Based on the fault signal, an alarm message is generated and an alarm is triggered; Limit the output power of the vehicle's engine; Illuminate the malfunction indicator light on the vehicle's dashboard to prompt the vehicle to undergo maintenance.

8. A method for remote monitoring of vehicle emissions implemented using the system according to any one of claims 1-7, characterized in that, The method includes: When the vehicle terminal detects that the vehicle has started, it performs continuity checks on the remote platform and the engine. When the continuity check result indicates that the transmission of the signal is normal, it reads the historical engine operating parameters within a preset period from the engine and sends them to the remote platform. The remote platform extracts the first engine parameters of the vehicle when it is running under a preset first operating condition from the historical engine operating parameters; based on the first engine parameters, it determines the engine operating status of the vehicle and judges whether the sensor signal is reliable; when the engine operating status is in operation and the sensor signal is reliable, it extracts the second engine parameters of the vehicle when it is running under a preset second operating condition from the historical engine operating parameters; based on the second engine parameters, it determines whether the vehicle has emission degradation; if so, it generates a vehicle fault signal and sends it to the vehicle terminal. The vehicle terminal sends the fault signal to the engine. The engine responds to the fault signal and issues an alarm.

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