107 results about "On-board diagnostics" patented technology

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.

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.

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.

A malfunction of an on-board diagnostic (OBD) controller system is diagnosed by comparing a voltage of an input part of an OBD controller with a voltage of a battery. The OBD controller is connected to the battery through a communication line in a hybrid electric vehicle (HEV). When an input voltage measuring circuit or the controller is malfunctioning, the malfunction is diagnosed.

A diagnostic system and technique for a machine (e.g. an industrial machine) to detect, identify, and resolve faults and issues with the machine, including connectivity and / or issues with a communications system. An on-board diagnostic system provides monitoring of machine components and / or the machine's communications system. The on-board system provides faster (e.g. real-time) and more accurate diagnostics and troubleshooting of machine issues. Captured data is communicated to a remote system for further analysis based on machine learning.

Method for driverless repositioning of a passenger vehicle (40) over a distance - in the work process, - in the distribution process or - between the production process and distribution process of a passenger vehicle manufacturer or distributor, wherein - to move the vehicle (40) depending on route information of the route, one or more actuators (20, 21, 22) of the vehicle (40) are controlled, which relate to the movement of the vehicle, - depending on route information ◯ the engine control, ◯ the braking system, ◯ the steering system, and / or ◯ the vehicle's transmission control (40) is controlled, - before the driverless relocation of the vehicle (40), an external device (4) is connected to the vehicle (40), - after the driverless relocation of the vehicle, the external device (4) is disconnected from the vehicle (40), - the external device (4) communicates with the vehicle electronics via an interface of the vehicle (40), and - the external device (4) receives sensor information from one or more sensors (10, 11, 12, 13) of the vehicle via the interface and / or the interface is the on-board diagnostics interface of the vehicle (40).

The invention discloses a diesel vehicle high-emission driving behavior analysis method, device and equipment and a storage medium, and relates to the technical field of diesel vehicle emission control, and the method comprises the steps: obtaining vehicle-mounted diagnosis data and digital elevation model data; carrying out data preprocessing on the vehicle-mounted diagnosis data and the digital elevation model data to obtain road slope data; an emission prediction model is obtained through road slope data training; performing interpretation analysis on the emission prediction model through a double-interpretation framework to generate a feature interpretation result; and a fuel-saving driving optimization strategy is generated according to a characteristic interpretation result, high-emission driving behaviors of the diesel vehicle under different road gradients and the running state of an engine behind the diesel vehicle are accurately revealed, and a basis is provided for formulating a targeted driving strategy and emission reduction measures.

Embodiments of the present application disclose a vehicle diagnosis method and related equipment, which are used for vehicle diagnosis in the case of improving the convenience of vehicle diagnosis. The method comprises the following steps: obtaining application information for closing vehicle on-board diagnosis authentication sent by a diagnosis equipment, the application information comprising various application parameters; if it is verified that the various application parameters meet a preset legality standard, the legality of the vehicle and the diagnosis equipment is determined by manually auditing the various application parameters; after the manual audit is passed, an authorization file for closing the on-board diagnosis authentication is generated based on the various application parameters, the authorization file is sent to the diagnosis equipment, so that the diagnosis equipment sends the authorization file to a corresponding vehicle ECU, and the vehicle ECU executes the operation of closing the on-board diagnosis authentication in the authorization file after verifying that the authorization file is legal.

The application provides a kind of rail vehicle axle end ground wire online monitoring system, belong to ground wire online monitoring field, the system includes: multiple sensor modules, one-to-one correspondence is arranged in each steering axle ground device of rail vehicle inside, for collecting the environmental data of each steering axle ground device;Multiple processors, one-to-one correspondence is arranged in each steering axle ground device of rail vehicle inside, and each processor is connected with adjacent on-board diagnostic instrument, for receiving the environmental data collected by corresponding sensor module;Multiple on-board diagnostic instruments, one-to-one correspondence is arranged in each steering axle ground device of rail vehicle inside, for monitoring the ground wire of corresponding steering axle ground device according to the environmental data sent by corresponding processor and the environmental data sent by adjacent processor.The rail vehicle axle end ground wire online monitoring system provided by the application can improve the reliability of ground wire online monitoring.

This invention discloses a method, apparatus, device, and vehicle for data recovery in a controller area network (CAN), relating to the field of CAN communication technology. By establishing a multi-level recovery mechanism based on the number of transmission failures, different levels of recovery operations are matched according to different threshold ranges of the failure count when data transmission fails, avoiding continuous occupation of central processing unit resources due to waiting for bus arbitration. When the failure count is in the first threshold range, data retransmission is performed; when it is in the second threshold range, the local CAN module is reset; and when it is in the third threshold range, a system-level reset is performed. This mechanism forms a progressive self-healing capability from the communication layer, driver layer, to the system layer, solving the problem of prolonged data recovery being stuck due to bus arbitration failure. It is suitable for vehicle diagnostic scenarios, improving data reporting success rate and system reliability.

The invention provides a diagnosis system and method of a whole vehicle electronic control unit and electronic equipment, the system is installed on target electronic equipment, the IP address of the target electronic equipment is the IP address of a diagnostic instrument defined in a vehicle-mounted network specification, the target electronic equipment comprises an interface module, and the interface module is used for connecting a vehicle-mounted diagnosis system of a tested vehicle; the system comprises a front-end display module, a communication module and a communication diagnosis module, the communication diagnosis module diagnoses the whole vehicle electronic control unit based on a preset communication protocol. According to the invention, the problems of large equipment size, heavy weight and untimely software adaptation in the prior art can be improved.

The utility model discloses a function verification device for an electric control unit of a marine engine. The function verification device comprises a power supply unit, a power supply switch, a T15 switch, a starting switch, a neutral gear switch, an electric control unit joint, an instrument joint, an OBD joint and a prompt unit. During actual use, the electric control unit connector is connected with an electric control unit, the instrument connector is connected with an instrument, the OBD connector is connected with a vehicle-mounted diagnostic system, the power switch, the T15 switch, the starting switch and / or the neutral gear switch are closed according to verification requirements, and the electric control unit operates after receiving signals through the electric control unit connector. The engine electronic control unit outputs corresponding electric signals to the electric control unit connector, the electric control unit connector transmits the corresponding signals to the prompting unit, and the prompting unit gives out corresponding prompts to indicate verification results of the starting function and the pre-oil-supply function of the engine electronic control unit. Therefore, the engine electronic control unit function verification device can verify the function of the engine electronic control unit, and is simple to operate, simple in structure, low in cost and easy to implement.