162 results about "On-board diagnostics" patented technology

A system and method for ΔI-powered engine diagnostics combine OBD-II data, high-frequency sound, and vibration analysis to detect engine wear and mechanical faults. A detachable puck sensor in the engine bay captures sound and vibration signals, while an OBD-II module collects engine performance metrics. A smartphone app collects and uploads data to a backend AI engine, where Dynamic Time Warping (DTW) aligns event-driven or asynchronous data and time series data from multiple sources, ensuring accurate feature fusion. Machine learning models then detect engine wear, belt degradation, knocking, and bearing faults, generating a diagnostic report with severity assessments and predictive maintenance recommendations. By integrating multi-modal sensor data, this system enhances early-stage fault detection beyond traditional OBD-II diagnostics, offering greater accuracy in assessing physical wear conditions and optimizing vehicle maintenance.

The invention discloses a communication method and system for real-time downloading of vehicle-mounted data, and the method comprises the steps: a ground downloading terminal transmits at least one data downloading request to a wireless transmission platform, the wireless transmission platform carries out resource configuration according to the priority parameters of the data types and sends at least one data downloading request to the vehicle-mounted diagnosis recording unit, the vehicle-mounted diagnosis recording unit carries out identity verification on the at least one data downloading request, if verification succeeds, the at least one data downloading request is decrypted and sent to the vehicle-mounted ATP, and the vehicle-mounted ATP sends the decrypted data downloading request to the wireless transmission platform; and the vehicle-mounted ATP responds to the at least one data downloading request, and encrypts and transmits the corresponding vehicle-mounted log data to the ground downloading terminal according to a priority sequence. According to the invention, the data in the wireless transmission process is dynamically encrypted, and the priority is distinguished according to the data type in the transmission process, so that the vehicle-mounted data can be quickly acquired on the premise of ensuring the transmission safety of the vehicle-mounted data, and the troubleshooting, analysis and repair of faults can be quickly realized.

The invention belongs to the field of intelligent vehicle-mounted technology, and particularly relates to a multifunctional vehicle-mounted sensing detection system based on multi-source information fusion, which comprises multi-source information acquisition, high-precision space-time synchronization and heterogeneous data preprocessing. A heterogeneous sensing system with feature level deep fusion, vehicle state dynamic performance evaluation and adaptive decision and risk evaluation capabilities is constructed, and a driving decision is dynamically adjusted through fusion perception and vehicle performance. The vehicle state and dynamic performance evaluation module is constructed by deeply integrating vehicle internal state data acquired by a vehicle-mounted diagnosis system into a perception fusion and decision planning process, and the core contradiction of disjunction of a perception result and a vehicle dynamic performance strategy is effectively solved. The system can evaluate key performance parameters such as power, braking, steering and the like of the vehicle and potential faults of the key performance parameters in real time, and the driving strategy and the safety margin are dynamically adjusted in the self-adaptive decision and risk evaluation module according to the actual physical limitation of the vehicle.

Apparatuses, machine-readable media, and methods related to vehicle diagnosis and repair are described. Receiving vehicle status information from a control panel and / or on board diagnostic (OBD) unit of a vehicle at a vehicle diagnosis and repair too can provide valuable information to an owner and / or user of a vehicle. Computing devices (e.g., mobile devices and / or modules having a computing device) can be configured to run an application (e.g., a vehicle diagnosis and repair tool) to determine whether a vehicle needs to be repaired or serviced according to examples of the present disclosure. The vehicle diagnosis and repair tool can receive vehicle status information, determine the repairs and / or service that the vehicle needs, and initiate the vehicle repairs and / or service.

The invention provides a vehicle-mounted diagnosis and remote diagnosis combination method and system, and relates to the technical field of vehicle fault diagnosis, and the method comprises the steps: converting diagnosis service data into a diagnosis script, and deploying the diagnosis script to a vehicle-mounted diagnosis unit for generating a preliminary diagnosis result according to fault data; sending the preliminary diagnosis result and the fault data to a regional diagnosis center to match corresponding computing resources for coordinated analysis, and generating an intermediate diagnosis scheme; and when the confidence coefficient of the middle-level diagnosis scheme is lower than a preset threshold value, submitting the preliminary diagnosis result, the fault data and the middle-level diagnosis scheme to a cloud server for deep analysis to obtain an optimized diagnosis strategy, and respectively issuing the optimized diagnosis strategy to a vehicle-mounted diagnosis unit and a regional diagnosis center to complete collaborative diagnosis. By implementing the method, the three-level diagnosis architecture is constructed, and different architectures complete fault diagnosis of different complexity degrees, so that the pressure of a remote platform is relieved, reasonable allocation of computing resources is realized, and the overall diagnosis efficiency is improved.

The invention discloses a vehicle-mounted diagnosis system based on CAN communication and an adjustable power supply and a method thereof, and relates to the technical field of vehicle electronic diagnosis. Comprising the following steps: a CAN communication acquisition module is used for acquiring a multi-channel CAN message containing a timestamp; the data processing module is used for identifying a signal field in the message and generating a structured signal value; the signal semantic recognition module is used for matching the structured signal with the reference state data and determining a semantic tag of the structured signal; the anomaly detection module identifies structural anomaly, time anomaly and behavior anomaly based on rule judgment and time sequence prediction; the control instruction generation module is used for generating a power supply control instruction according to the abnormal level; and the adjustable power supply equipment module adjusts output voltage and current parameters according to the control instruction and feeds back a power supply state. According to the method, a closed-loop diagnosis process from CAN data acquisition, signal behavior modeling to power supply response control is constructed, and the method is suitable for application scenes such as function verification, anomaly recognition and system testing of the vehicle-mounted electronic control unit.

A splitter harness and a method of installing the splitter harness are provided. The splitter harness includes a main harness segment having a first multi-wire harness connector and a second multi-wire harness connector at both ends thereof, an On-Board Diagnostic (OBD) port harness segment having an OBD port connector at an end thereof, a signal splitter, and a power signal provider for providing power to the OBD port connector. The method includes unplugging the vehicle connector cable connectors, connecting the harness connectors, and connecting the power signal provider to a power source.

A vehicle alert system (10) for instructing observers as to movement of the vehicle. A scoop (12) adheres against an inside surface of a windshield (2) and supports a plurality of illuminating elements (43) communicating with a PCBA (44), along with each of an accelerometer (74), on board diagnostic system and a power supply. In response to a determined acceleration of the structure, the accelerometer (74) inputs a signal to the PCBA (44) representative of the vehicle movement and the PCBA (44) in turn provides an output signal causing illuminating elements to generate a visual output corresponding to said input signal and further representative of a decelerating or braking condition of the vehicle. An ambient light sensor (ALS) can be incorporated into the assembly for managing lighting / LED intensity based upon exterior lighting conditions.

The invention provides an electric vehicle alternating current charging data acquisition and analysis system and method. Wherein the alternating current charging pile, the vehicle charging interface, the vehicle-mounted charger and the high-voltage distribution box are sequentially connected in series; the high-voltage distribution box is respectively connected with the high-voltage load, the power battery and the direct-current converter; the direct-current converter is connected with a low-voltage load; the on-board OBD diagnosis interface is connected with the AC charging pile, the vehicle charging interface, the on-board charger, the high-voltage distribution box, the high-voltage load, the power battery, the DC converter and the low-voltage load. A plurality of data acquisition points are arranged among the devices, and the plurality of data acquisition points are respectively connected with the multi-channel power analyzer. According to the invention, data acquisition points on an electric quantity transmission loop are added, and redundancy check is carried out on the acquired data in combination with monitoring data of each device to ensure data accuracy, so that alternating current charging efficiency and influence factors thereof are quantified, and a direction is provided for subsequent engineering optimization.

The invention discloses a function layer and protocol analysis layer decoupling vehicle-mounted diagnosis system architecture and a diagnosis method, and the system comprises a function service unit group which is used for sending an abstract diagnosis request to a protocol adaptation bus when a diagnosis operation is executed; the protocol adapter group is used for executing diagnosis operation based on the abstract diagnosis request and sending semantically packaged response data to the protocol adaptation bus; and the protocol adaptation bus is connected between the function service unit group and the protocol adapter group, and is used for transmitting abstract diagnosis requests and response data to the protocol adapter group and the function service unit group respectively, so that decoupling of the function layer and the protocol analysis layer is realized. Through collaborative design of the function service unit group, the protocol adapter group and the protocol adaptation bus, diagnosis function realization and a protocol analysis process are separated, flexible switching between independent evolution of diagnosis service and protocol adaptation is realized, and the method has the advantages of improving system maintainability, expandability and cross-platform compatibility.

The invention relates to the technical field of vehicle-mounted diagnostic services, in particular to a safety authentication method and device for the vehicle-mounted diagnostic services, a vehicle and a storage medium, and the method comprises the steps: generating initial data of a first target byte when a diagnosis authentication request instruction is received, and carrying out the data processing of the initial data, and obtaining to-be-authenticated data of a second target byte, receiving to-be-authenticated data of a third target byte after target cloud data processing, and if the to-be-authenticated data of the second target byte and the third target byte meet a preset matching condition, judging that the vehicle-mounted diagnosis service passes authentication, and unlocking the vehicle-mounted diagnosis service. And based on the diagnosis authentication request instruction, controlling the vehicle-mounted diagnosis service to carry out diagnosis. Therefore, the problems that the security algorithm is easy to crack, the leakage possibility is improved and the like due to the fact that the security algorithm is relatively simple, the mask is relatively short and the security algorithm and the mask are transmitted through a plaintext in the related technology are solved.

The invention provides a multi-link Ethernet message acquisition system and method, and belongs to the technical field of Ethernet message data transmission, the multi-link Ethernet message acquisition system comprises a data acquisition module, a switch module, a vehicle-mounted diagnosis system and a troubleshooting module, and a computer in the troubleshooting module inputs a diagnosis request instruction to the vehicle-mounted diagnosis system. And the vehicle-mounted diagnosis system inputs a diagnosis request instruction to the Ethernet controller through the switch module. And the Ethernet controller adds a label to a specified link message in the diagnosis request instruction according to the diagnosis request instruction and transmits the label to the switch module. And the switch module identifies the link message and then transmits the link message to the vehicle-mounted diagnosis system. And the vehicle-mounted diagnosis system outputs the link message to the troubleshooting module, and the troubleshooting module carries out troubleshooting. According to the invention, the data transmission rate in different local area networks is improved, the response time of the diagnosis request instruction is reduced, and the accuracy of automobile testing is improved.

A diagnostic system for assessing engine wear utilizes data from sensors in a vehicle engine compartment and electronic data from a vehicle communications network to provide a comprehensive diagnostic evaluation. The system includes a sensor device with an audio sensor for capturing engine sound, an accelerometer for detecting vibration, and a near-field communication (NFC) tag for sensor information. The sensor device communicates sound and vibration data to a remote server, while a data acquisition and transfer (DAT) device connected to the vehicle's diagnostic port transmits engine performance metrics. A Dynamic Time Warping (DTW) algorithm aligns time-series data from the sensor and vehicle metrics to identify engine problems. The system supports cloud-based diagnostics and enables optimal sensor placement using geo-location or positional data. Applications include smartphone integration, Wi-Fi 6 communication for high-speed data transfer, and scan modes for varying diagnostic detail levels.

The invention discloses a carbon emission factor optimization method and system for accounting-monitoring interactive verification. The method comprises the following steps: dividing mechanical equipment into core equipment and auxiliary equipment; a vehicle-mounted diagnosis terminal configured to be used for collecting operation state data of the mechanical equipment and a tail gas sensor configured to be used for monitoring direct carbon emission data of the mechanical equipment are installed on the core equipment; recording the daily fuel consumption of the auxiliary equipment; calculating an accounting value of the carbon emission data corresponding to the core equipment and a monitoring value of the carbon emission data corresponding to the auxiliary equipment respectively; calculating the ratio of the monitoring value to the accounting value to obtain a value for data verification and abnormality diagnosis; the emission factor is optimized weekly by a dynamic model according to the value, the time decay factor, and the job scenario. And the accuracy of carbon emission management is improved.

A vehicle diagnostics technology is provided. Further, a vehicle fault diagnostic method, an on-board diagnostic apparatus, and a related system that are used for advanced intelligent driving are provided. In an example method, a first diagnostic module monitors and records first fault information, and a second diagnostic module monitors and records second fault information. The second diagnostic module sends the second fault information to the first diagnostic module. The example method further includes the first diagnostic module communicating with a master computer through a first communication interface and the second diagnostic module communicating with the master computer through a second communication interface.

The invention provides a continuous frame parameter adjustment method, electronic equipment and a system in on-board diagnostic communication. The method comprises the following steps: determining the priority of UDS service; determining a reference value of the first parameter according to the priority of the UDS service; determining a predicted value of a network load at a future moment through a network load prediction model based on the correlation characteristics of the vehicle at the current moment; and correcting the reference value of the first parameter according to the predicted value of the network load at the future moment and the true value of the network load at the current moment to obtain a corrected value of the first parameter. Through the technical scheme of the invention, the continuous frame parameter can adapt to the dynamically fluctuating network load, the loss probability of the continuous frame is reduced, and the stable and effective transmission of the continuous frame is ensured.

The application relates to the technical field of data acquisition in an on-board diagnostic system, in particular to a data acquisition method based on an OBD on-board diagnostic system and related equipment. The data acquisition method comprises the following steps: receiving a target query instruction, matching a target item to be queried; based on the target item to be queried, acquiring target running data of a vehicle at present; judging whether the target query instruction is consistent with the target item to be queried, if yes, the target running data is taken as output data for output; if no, a target algorithm is matched for operation, and the operated data is taken as the output data for output; judging whether the output data is within a corresponding safety threshold, if no, a preset fault reason is matched for output. The application can improve the flexibility and accuracy of the OBD system in data acquisition.

The application provides a new energy vehicle optimization online method, system, device and storage medium, which comprises the following steps: storing device number information into a basic configuration file of a T-Box terminal through a production test tool, sending the device number information to a new energy platform, adding an online number corresponding to the device number information in the device management of the new energy platform, judging whether the T-Box terminal can collect a vehicle identification code of a vehicle through CAN, if the T-Box terminal can collect the vehicle identification code through CAN, sending the vehicle identification code and the device number information to the new energy platform through a registration protocol, otherwise adding an on-board diagnostic instruction in the basic configuration file, the on-board diagnostic instruction containing frame number parameter information, reading the frame number parameter information in the on-board diagnostic instruction by the T-Box terminal, sending the vehicle identification code and the device number information to the new energy platform through the registration protocol, and performing vehicle online according to the vehicle identification code and the device number information by the new energy platform. The vehicle is automatically online on the new energy platform.

1. The name of the design product: plug protective cover. 2. The use of the design product: for the protection of the plug of the on-board diagnostic system. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: design 1 perspective view 1. 5. Design 1 is designated as the basic design.

A computing system 8 internal to a motor vehicle 6 comprises a control circuit 10 configured to: operate an onboard diagnostic scanner 12 internal to the motor vehicle and obtain at least one diagnost

The invention discloses a fault diagnosis method for a motor drive control system of an electric vehicle, and relates to the technical field of fault diagnosis, and the method comprises the steps: carrying out the global collection of real-time operation data, obtaining a global operation image, and constructing a three-dimensional operation model based on the global operation image; performing electrical and mechanical coupling relationship restoration on the three-dimensional operation model to obtain operation mechanism data; performing abnormal probability estimation on the motor driving control system based on the operation mechanism data and the global operation image to obtain fault probability data, and performing load impact energy increment calculation on the fault probability data to obtain abnormal impact energy data; according to the fault probability data and the abnormal impact energy data, carrying out local risk level assignment on the electric vehicle motor driving control system to form a local risk level map; and constructing a potential safety hazard identification optimization model, and sending the potential safety hazard identification optimization model to the vehicle-mounted diagnosis terminal. The method has the effect of improving the fault diagnosis efficiency.

The present application belongs to the field of engine fuel control technology, and particularly relates to a fuel information processing method, an engine management device, a medium and a controller; by partitioning calibration of engine working conditions and combining preset reference physical quantity threshold conditions, the detection and response information of the control unit on the knocking phenomenon of poor oil products is used to realize the processing of fuel quality information under preset working conditions, and then the discrimination of fuel information is improved by combining the collection and processing of fuel filling information, and further the running state of the engine is improved by comprehensively processing the working condition information and adjusting the ignition angle; the method and product of the present application can meet the on-board diagnostic (OBD) capability, improve the adaptability of the engine to oil products, maintain a high fuel economy level and engine safety level, and can upgrade the control strategy on the basis of the existing hardware to improve the noise, vibration and harshness (NVH) performance of the vehicle and the robustness of the engine.

The invention is suitable for the technical field of automotive electronics, provides a vehicle-mounted diagnosis security access method and system based on heterogeneous computing power transfer, and aims to solve the problems of timeout, blocking real-time control and the like when a low-computing-power edge node executes high-strength asymmetric signature verification. The system is composed of a service interaction layer, a security routing layer, a core computing power layer and a board-level high-speed link. The method comprises the following steps: a target edge node receives a diagnosis request, requests a 32-byte challenge value from a gateway and feeds back the challenge value; after a 64-byte ECDSA signature is received, NRC 0x78 is sent, and data are packaged to initiate computing power transfer; the gateway converts the protocol and transmits the protocol to the SoC; the SoC executes signature verification based on the NIST P-256 and feeds back a result; and the target edge node unlocks the authority. According to the method, edge hardware does not need to be upgraded, the UN R155 compliance requirement is met at low cost, and diagnosis efficiency and vehicle real-time control safety are guaranteed.

The invention discloses a whole vehicle sensor electrical fault simulation device and method, and relates to the field of whole vehicle sensor testing. A signal acquisition device is used for acquiring a signal output by a sensor during normal work; the computer is used for acquiring a signal waveform, determining a signal type and a working range, modifying the signal waveform according to the signal type and the working range, and controlling the signal generator to simulate a sensor fault signal by using the modified signal waveform; a sensor fault signal generated by the signal generator is sent to the trip computer by connecting the wire harness with the fault test box; the vehicle-mounted diagnosis system obtains a sensor fault signal through the trip computer, judges the working state of the sensor and determines a fault code; and the on-board diagnostic system diagnostic instrument verifies whether the monitoring function of the on-board diagnostic system on the sensor is normal or not according to the fault code determined by the on-board diagnostic system. According to the invention, the electrical fault of the sensor of the whole vehicle can be simulated without dismounting the sensor, and the function verification of the OBD system on the sensor is realized.

A vehicle includes at least one input device adapted to be operated by a user to control at least one driving function of the vehicle, and an onboard diagnostic port adapted to be engaged with a dongle. The vehicle also includes a controller configured to detect the engagement of the dongle with the onboard diagnostic port, and activate a game mode of the vehicle upon detection of the engagement of the dongle with the port. The controller is further configured to disable an ignition of the vehicle in response to the activation of the game mode, and associate the at least one input device with at least one control function of a game to be played using a virtual reality headset. The control function of the game being played on the virtual reality headset is controlled in response to the actuation of the input device.

According to the OBD data quality control method and device based on the field difference, a first field used for calculating emission rate information in OBD data is distinguished, and the accuracy of calculating the OBD data used for the emission rate information is ensured based on validity judgment of the first field; the OBD data with all effective first fields are used as the OBD data for determining the emission rate information, the situation that the OBD data with all effective first fields are deleted due to the fact that the second fields are invalid is reduced, the data volume of the OBD data for determining the emission rate information is increased, and the emission rate information can be determined by increasing the data volume of the OBD data for determining the emission rate information. The accuracy of the determined emission rate information is improved; in view that the vehicle emission factor is determined based on the emission rate information, a data basis is provided for improving the accuracy of the vehicle emission factor based on the improvement of the accuracy of the emission rate information, and a data support is provided for improving the quality of vehicle emission level evaluation.

Embodiments of the invention disclose a diagnosis control method and apparatus, an electronic device and a storage medium. The method comprises the steps of performing diagnosis demand identification on input information of a diagnosis interaction interface through a target language model; establishing communication connection between the target language model and a vehicle-mounted diagnosis module of the target vehicle under the condition that the identification result contains a diagnosis demand for the target vehicle and the diagnosis demand meets a diagnosis control condition; based on a target diagnosis instruction set matched with the diagnosis demand; and based on the target diagnosis instruction set, the vehicle-mounted diagnosis module is controlled to perform diagnosis operation on the target vehicle through the communication connection, and an obtained diagnosis result is returned to the target language model, so that the diagnosis result is displayed on the diagnosis interaction interface. On the basis, communication connection between the target language model and the vehicle-mounted diagnosis module of the vehicle is established, so that the target language model controls the diagnosis work of the vehicle-mounted diagnosis module based on the instruction set corresponding to the diagnosis demand, and the complexity of vehicle-mounted diagnosis operation is reduced.

The invention relates to the technical field of automobile fault diagnosis, and discloses an automobile fault offline diagnosis method based on multi-sensor data fusion, which comprises the following steps of: 1, connecting a vehicle-mounted diagnosis instrument with an automobile diagnosis port, reading an automobile fault code, and determining an engine fault instruction; 2, deploying various sensors in an engine compartment according to the fault instruction, and setting a sampling frequency to obtain various data in the engine compartment in the running process of the vehicle; and step 3, preprocessing the acquired data, identifying abnormal data in the acquired data, rejecting the abnormal data, and performing data supplementation on a data vacancy after data rejection. According to an initial fault instruction read by a vehicle-mounted diagnostic instrument, multiple types of sensors are deployed in a vehicle engine to collect data, a dynamic threshold interval is constructed to recognize abnormal data of the sensors, and the abnormal data of the sensors are removed.

A vehicle wheel defect indicator system includes a visible light array mounted on a vehicle wheel, a processor, and a memory communicably coupled to the processor and storing a light array control module. The light array control module includes computer-readable instructions that when executed by the processor cause the processor to, after a defect is detected in the vehicle wheel, determine a lighting scheme associated with the defect, and control operation of the visible light array to implement the lighting scheme. The visible light array may be attached to the vehicle wheel and is automatically controllable to implement the lighting scheme to communicate the wheel defect. This enables the nature of a detected wheel defect to be communicated to a user or other person without the need to couple an OBD (On-Board Diagnostics) scanner to a vehicle diagnostics port.