196 results about "CAN bus" patented technology

The invention discloses a vehicle idling start and stop control system and method. The control system judges whether a vehicle has idling start and stop conditions by monitoring the water temperatureof an engine, the capacity of a storage battery, a safety belt and other information, judges whether the vehicle has conditions of stopping the engine by monitoring the rotating speed of the engine, the speed of the vehicle, the brake air pressure and other conditions, and judges whether the vehicle has conditions of starting the engine by monitoring the gear of a gearbox, the speed of the vehicle, a hand brake and other information. When the relevant conditions are met, start and stop work signals are sent to the engine though a CAN bus. In order to guarantee the reliability of frequent startand stop of the engine, the system strengthens flywheel gear rings of a starter and the engine. In order to ensure that the battery does not lose power, a storage battery capacity sensor is added tothe system on the basis of increasing the capacity of the storage battery, and the idling start and stop are allowed when the state of charge (SOC) of the storage battery satisfies a safe starting threshold. The idling start and stop control system has advantages of low cost and high reliability, and is especially suitable for commercial vehicles.

This invention relates to the field of computer technology, specifically to a method and apparatus for integrating third-party algorithm components based on dual-core collaboration. This application directly integrates third-party algorithm components into the BCM dual-core MCU, eliminating reliance on ZCU and CAN bus communication. This fundamentally eliminates the latency and security overhead caused by cross-ECU transmission and E2E protection, improving signal real-time performance and communication security. By clearly defining the functions and allocating resources of the BCM dual-core, a dedicated storage area is planned for the third-party algorithm components, and a standardized integration environment is built, achieving efficient and stable component integration. Simultaneously, peripheral access strategies are optimized, unnecessary protections and redundant polling are disabled, releasing idle computing power and hardware resources of the BCM and improving utilization. Without increasing the ZCU hardware cost, the chassis braking algorithm is deployed and executed locally, reducing performance losses caused by cross-domain communication and effectively improving the overall system operating efficiency and resource utilization efficiency.

This invention provides a method and system for predicting vehicle speed in commercial vehicles using the E-Power architecture, relating to the field of commercial vehicle speed measurement technology. First, vehicle operating data is collected via hardwired and CAN bus lines. Second, the PCA method is used to extract features from the collected vehicle operating data, obtaining variables highly correlated with vehicle speed, which serve as input to the speed prediction model, improving computational efficiency. Finally, a speed prediction model is established based on a recursive fuzzy neural network and a multi-step prediction strategy, achieving accurate prediction of vehicle speed during operation and improving fuel economy and driving comfort.

The application discloses a kind of intelligent wiper control method and system, car, wherein method includes obtaining wiper switch signal and vehicle information on vehicle CAN bus;Based on wiper switch signal, it is judged whether to start the automatic control of wiper;After judging to start the automatic control of wiper, the theoretical wiping speed of wiper is calculated based on the vehicle information read on vehicle CAN bus, and the wiper motor is controlled according to the theoretical wiping speed of wiper.The application has the advantages that the rain sensor is cancelled, the purpose of low-cost wiper control is realized, the control of wiper is realized through logic control, and the cost of wiper control is saved.

The application discloses a kind of air-cooled refrigerator CAN bus multi-node instruction scheduling method and system, it is related to refrigerator control technical field, it is solved in the air-cooled refrigerator multi-node CAN bus control scene, when sudden heat load of freezing chamber, emergency refrigeration switching instruction is easily crowded by ordinary periodic message and leads to the problem of execution lag, first build cabinet temperature acquisition result, message category and periodic occupation relationship, then according to temperature deviation, temperature rise rate, door opening disturbance and forecast overrun result generate cabinet emergency degree, and form emergency refrigeration instruction set and ordinary message degradation set, then according to basic cycle division synchronous reference window, emergency exclusive window, key feedback window and ordinary arbitration window, make emergency refrigeration instruction priority transmission and priority confirmation, finally according to key message response delay, cabinet recovery state and ordinary message backlog situation iteration correction next round of scheduling parameters, to improve the timeliness and stability of multi-node collaborative control under sudden load scenario.

The application discloses an engine cold start system and method based on AMT clutch control and belongs to the technical field of vehicle control systems. The system comprises an engine assembly, an engine electronic control unit ECU, an AMT automatic transmission assembly, an automatic transmission electronic control unit TCU, a clutch assembly and a cold start signal input assembly; the output end of the engine assembly is in transmission connection with the clutch assembly, and the clutch assembly is in transmission connection with the input shaft of the AMT automatic transmission assembly; the engine electronic control unit ECU is electrically connected with the engine assembly and the cold start signal input assembly respectively, and the automatic transmission electronic control unit TCU is electrically connected with the AMT automatic transmission assembly and the clutch assembly respectively; the engine electronic control unit ECU and the automatic transmission electronic control unit TCU exchange messages through the vehicle CAN bus to control the separation of the clutch assembly, reduce the flywheel end load of the engine and realize engine cold start control.

This invention provides a car seat headrest speaker, including a microcontroller, a digital signal processor, a power amplifier chip, and two pins. The power amplifier chip is connected to a speaker and the digital signal processor; the digital signal processor is connected to the microcontroller; and the microcontroller has a Bluetooth transceiver. The speaker is detachably connected to the car seat headrest. The two pins connect to the vehicle's infotainment system, through which the microcontroller receives CAN protocol signals and controls the Bluetooth transceiver to enter TWS pairing mode based on the CAN protocol signals. This invention achieves multi-scenario speaker use through a detachable design and utilizes physical pins to transmit CAN bus signals to activate TWS pairing, solving the problems of existing car audio systems being non-detachable and limited in use scenarios. While ensuring driving safety, it enhances the auditory immersion and interactive experience for drivers and passengers.

The application discloses a kind of based on two-dimensional coupling chaos vehicle CAN bus lightweight security communication method, belong to vehicle network security communication technical field.This method is applied to the layered vehicle network including gateway electronic control unit GECU, domain control unit DCU and electronic control unit ECU, including four stages of system initialization, identity authentication, key distribution and secure communication.Through two-dimensional coupling chaotic mapping, random challenge value, authentication random quantity and chaotic seed are generated, and combined with global round parameter epoch and domain key evolution parameter rand, a layered key management mechanism is constructed to realize the local derivation of inter-domain and intra-domain shared session keys.The sending node uses the shared session key to perform lightweight encryption and authentication on the service data, and encapsulates the ciphertext and authentication tag in the same CAN message for transmission.This method improves the communication performance of vehicle CAN bus without significantly increasing communication overhead and computational overhead.

Disclosed are a method for initializing a controller area network interface, an electronic device, and a robot. The method for initializing a controller area network interface provided by the present disclosure is suitable for interface initialization in the CAN bus communication scenario of an industrial robot. By adopting a multi-source hierarchical configuration analysis mechanism, the priority of configuration sources such as environment variables and command line parameters is determined, CAN interface zero-configuration deployment is achieved, and the configuration flexibility and environment adaptation capability are greatly improved. By introducing a state-aware redundant configuration skipping mechanism, the current state of the interface is queried during initialization, unnecessary repeated operations are skipped, hardware loss and initialization delay are reduced, and system startup efficiency is improved. The method has a graceful degradation strategy, and in a multi-interface scenario, the failure of partial interface initialization does not block the overall service startup, thereby improving the system fault tolerance and operation stability. Meanwhile, by adopting an initialization strategy with fixed interval retries, the method avoids the endless loop caused by the failure of initialization due to temporary faults.

This invention belongs to the field of vehicle technology, specifically providing a system and method for multiplexing the output shaft speed of an engineering vehicle's transmission. The system includes a vehicle controller, a vehicle instrument cluster, and a transmission controller connected via a CAN bus. The vehicle controller is connected to a transmission input shaft speed sensor via a first relay. The vehicle controller is also connected to a transmission output shaft speed sensor via a second relay. A third relay is connected to both the vehicle instrument cluster and the second relay. The transmission controller is connected to both the first and second relays. The vehicle controller controls the operation of the corresponding relays based on the transmission type configured in the vehicle, connecting the signal paths of the corresponding sensors. After the sensor signal paths are connected, the vehicle controller determines the operating mode and controls the relevant relays accordingly. This provides accurate and reliable speed values, effectively improving the safety of the upper structure's operating mode.

This invention relates to the field of electricity meter metering box technology, and particularly to an IoT lock device and method for online monitoring and control of the opening and closing of the metering box. The device includes a metering box, a door, and a lock plate. The door is rotatably mounted on the metering box, and the lock plate is fixed to the outside of the door. Inside the lock plate are an IoT lock and lock monitoring equipment. The IoT lock has an electronic latch, and an IoT lock power induction coil is installed on the lock plate and electrically connected to the IoT lock. A metering switch inside the metering box is connected to the IoT lock via a composite contact through a CAN bus and power supply. A door magnetic switch on the door frame communicates with the IoT lock. The method transmits commands containing a unique lock management code via the CAN bus. After verification by the IoT lock, it controls the electronic latch to move. The door magnetic switch provides feedback on the door status, and the lock monitoring equipment verifies the status. This invention achieves authorized control and operation traceability, improves security level and monitoring reliability, provides dual interlocking to ensure equipment safety, optimizes installation and maintenance, and is suitable for outdoor environments.

This invention provides a transmitter circuit for a CAN bus, relating to the field of CAN bus communication. The circuit includes: a common-mode feedback circuit for generating first and second gate voltages; a slew rate control circuit comprising a CANH terminal circuit for receiving the first gate voltage and a CANL terminal circuit for receiving the second gate voltage, each terminal circuit including multiple sequentially connected delay units and power transistors, the delay units controlling the gate voltage of the power transistors stage by stage to alternately switch the power transistors; and a port positive and negative high-voltage protection circuit, respectively connected between the output terminals of the CANH and CANL terminal circuits and the bus port, for protecting against positive and negative high voltages on the bus and suppressing parasitic effects. The beneficial effects are: by controlling the switching of the power transistors stage by stage through the delay units, the current surge rate is reduced, and electromagnetic radiation is reduced; by stabilizing the gate voltage and balancing the output current through common-mode feedback, signal symmetry is improved and common-mode interference is suppressed.

This invention discloses an offline voice interaction system and method for motorcycles, belonging to the field of voice interaction technology. The invention aims to solve the technical problems of low recognition rate and lack of driving safety control in existing motorcycle voice systems under high-speed wind noise environments. Its technical solution includes: synchronously acquiring microphone array audio signals and CAN bus vehicle driving status data; dynamically loading a high-noise robust simplified instruction library or a full-function instruction library based on the real-time environmental signal-to-noise ratio to adapt to different riding scenarios; using a safety interlock decision module to match voice operation intentions with physical states such as vehicle speed and tilt angle in a permission mapping table, intercepting high-risk instructions or triggering secondary confirmation; and adaptively adjusting the gain and speech rate of the feedback voice based on the environmental signal-to-noise ratio. This invention can achieve highly reliable voice interaction across the entire speed range while ensuring riding safety.

This invention discloses an elevator edge computing device, including a communication interface, a control and acquisition interface, and an AI processing unit. The communication interface includes dual Ethernet ports and onboard WiFi and Bluetooth modules. The control and acquisition interface includes a USB interface, a CAN bus, an RS485 or RS232 interface, digital input, and digital output interfaces. The CAN bus interfaces with the elevator control system, and the RS485 and RS232 interfaces interface with various sensors or peripherals. The AI ​​processing unit is equipped with a trained AI model that features adaptive parameter optimization. The elevator edge computing device is installed on the elevator car in a locally deployed manner, enabling data communication and cloud-edge collaboration with a cloud platform. This invention has significant value in processing dense sensor signal data in the elevator car and optimizing local performance and cost.

The application provides a linear motion test system of a multi-channel inductive proximity sensor, relates to the technical field of aviation sensor testing, and comprises a base, a plurality of linear motion platforms installed on the base, a plurality of targets fixed on the linear motion platforms through target supports, a plurality of proximity sensors fixed on the base through sensor supports, a plurality of stepping motors for driving the linear motion platforms to move along a straight line, and an upper computer connected with the stepping motors through a CAN bus via a CAN distributor, for sending position control instructions to the stepping motors, so that the stepping motors drive the linear motion platforms to drive the targets to move, the distance between the targets and the proximity sensors is adjusted, the inductance values of the plurality of proximity sensors are collected by a measured controller, and performance verification is completed. The application realizes automatic and accurate control, reproduces real working conditions, improves the reliability of test data, adapts to the testing requirements of multiple scenes, and guarantees the operation reliability of aviation key systems.

This invention discloses a communication gateway, data communication method, and vehicle control chip for inter-core collaboration, belonging to the field of vehicle diagnostic technology. The communication gateway is integrated into the diagnostic processing core. The diagnostic processing core and the bus communication core collaborate through the communication gateway. The communication gateway includes: an inter-core transparent transmission interface connected to the bus communication core, used to acquire the DoCAN data packet carrying the diagnostic request transmitted by the bus communication core when the CAN diagnostic instrument sends a diagnostic request via the CAN bus; and a first reassembly unit connected to the inter-core transparent transmission interface, used to parse the DoCAN data packet and reassemble it into a DoIP data packet; the reassembled DoIP data packet is sent to the diagnostic processing core for diagnostic processing. The beneficial effects of the above technical solution are: reliable transparent transmission of diagnostic data between dual cores in a multi-core heterogeneous SoC chip architecture, support for seamless conversion between dual bus protocols, and meeting the access requirements of diagnostic services under multiple protocols.

The present application relates to a kind of methods for coordinating left and right light controller work using CAN message, comprising the following steps: in the first time window after the power-on of left controller and right light controller, local pin level is detected and bus message is listened, and it is determined that itself is left light controller or right light controller by level state;In the first time window, left controller or right light controller listens CAN bus, whether the state message of non-controller side is received is judged, if so, continue normal work;Otherwise, trigger identification error flag.The method for coordinating left and right light controller work using CAN message, device, processor and its computer readable storage medium of the present application are adopted, the pain points of left and right light controller identity misjudgment and playing out of sync are solved, single point failure caused by wire harness open circuit or unreliable connection is avoided, the function safety level of turn signal system is greatly improved, and the defect that traditional time reference synchronization easily causes software competition and then reduces reliability is overcome.

The utility model provides a kind of passenger vehicle right side rearview mirror integrated type stop board device, to solve the problem that current stop board is easily blocked, and passenger is difficult to see information. It includes mounting bracket, display panel and anti-glare transparent cover, mounting bracket is located in right side rearview mirror front end, display panel is installed on it, and it is electrically connected with vehicle control system through CAN bus to display line information, anti-glare transparent cover is fixed in rearview mirror and covers display panel. In addition, display panel orientation is 15 °-30 ° outside angle of extension with vehicle direction of advance, center line is 1.8-2.2 meters from ground, and LED electronic screen is used;Mounting bracket is aluminum alloy material, and it contains rotatable pivot and motor, and display panel angle can be adjusted. The device uses the advantage of rearview mirror, reduces shielding, and passenger obtains line information conveniently, and improves ride experience.

This invention relates to a cockpit simulation instrument system based on modular design and a configuration and testing method based on this system. The system includes: a host computer control system for generating configuration calibration commands and verification test commands; and a slave computer control system including a main control unit, common function components, and pointer drive components, wherein the common function components are selected according to the instrument's functional requirements, and the pointer drive components are selected according to the motor type and instrument type. The slave computer control system communicates with the host computer control system via a CAN bus and is used to: respond to configuration calibration commands, drive the instrument pointer to complete calibration and feed back a first operating status frame to the host computer control system; and respond to verification test commands, drive the instrument pointer to perform verification test movements and feed back a second operating status frame to the host computer control system. This invention can effectively realize the configuration and testing functions of the slave instrument, improve design efficiency, and reduce functional testing time.

This invention provides a communication method, device, and system based on a CAN bus. The method includes: receiving a periodic start command broadcast by a master node; and, based on its topological position in the logical chain, executing the following transmission permission determination logic: if it is the first node in the logical chain, it determines that it has obtained bus transmission permission in response to the periodic start command; if it is not the first node, it listens in real time for token passing frames sent by predecessor nodes in the logical chain; within the communication period defined by the periodic start command, when it receives a token passing frame sent by a predecessor node, it determines that it has obtained bus transmission permission; within the obtained bus transmission permission, it sends service data to the CAN bus; after sending the service data, it broadcasts its own token passing frame containing the address of the next-hop successor node to pass the bus transmission permission to the successor nodes in the logical chain.

This application provides a method and system for temperature control of the equipment compartment of an unmanned vehicle's domain controller, relating to the field of thermal management technology for new energy vehicles. The method utilizes the domain controller of the unmanned bus to acquire real-time temperature data. Temperature sensors are used to collect coolant temperature data from the circulation pipes, and operating parameters of the air conditioning ventilation system, including operating power, are calculated based on the coolant temperature. Control commands are then generated based on these parameters and sent to the air conditioning ventilation system to ensure it operates at the specified power. This method improves the response speed of the air conditioning ventilation system by acquiring real-time coolant temperature data and achieves centralized control through the domain controller, thereby improving the efficiency and accuracy of equipment compartment temperature control. Furthermore, the method's domain controller dynamically adjusts the operating parameters of the air conditioning ventilation system via a CAN bus, reducing energy consumption.

A log management module includes: an anomaly detection information receiver that receives anomaly detection information; a detection history information storage that stores detection history information; an attack route information storage that stores attack route information indicating a candidate for an attack route in the CAN bus; an attack route estimator that estimates an attack route including the specific device, based on the attack route information; and a collection target determiner that, upon receipt of the anomaly detection information by the anomaly detection information receiver, determines, as collection targets whose log information for analysis which is for analyzing presence or absence of an undetected anomaly in the CAN bus is to be collected, one or more candidate devices which have been narrowed down from the devices, are present on the attack route estimated by the attack route estimator, and have no history of anomaly detection.

This invention relates to the field of automotive testing technology, specifically to an automotive motor controller simulation testing system and method, comprising: a model building module, a testing module, a control module, and a CAN bus module; the model building module is used to build a complete vehicle model and a simulation environment model; the testing module receives the complete vehicle model and the simulation environment model, and the testing module is connected to the control module; the control module is used to send test commands; the CAN bus module is connected to the motor controller, and the CAN bus module is connected to the model building module, the control module, the testing module, and the motor controller respectively, forming a communication channel; this invention constructs a complete vehicle and environment simulation through digital twin technology, realizing multi-physics coupling, thereby improving the accuracy and realism of simulation testing.

This invention discloses a method for emergency charging of electric vehicles using intelligent drones, belonging to the field of drone technology. The method comprises three steps: the electric vehicle triggers an encrypted distress call based on a threshold between its remaining range and the distance to a charging station; the dispatch center matches the drone with charging equipment and plans an optimal flight path for multiple targets; after the drone arrives, it accurately hovers to identify the license plate, selects a safe landing point, and after the user connects to the charging equipment, the system completes a pre-charging self-check of multiple parameters such as voltage, insulation, and temperature; the charging equipment achieves voltage matching through PID closed-loop control, adapts to the optimal charging current via CAN bus communication, monitors charging parameters in real time, and then disconnects power in an orderly manner, allowing the drone to return autonomously. This invention offers fast response, adaptability to different electric vehicle parameters, safe and controllable charging, and simple operation, effectively compensating for the shortcomings of outdoor energy replenishment for electric vehicles and improving the flexibility and efficiency of emergency charging.

This invention relates to the field of commercial vehicle rearview mirror technology, specifically to a follow-up rearview mirror device with adaptive lens adjustment, including a rearview mirror lens and a wide-angle lens. A radar system and a camera are mounted on the rearview mirror lens. The rearview mirror lens and the wide-angle lens are mounted on a mirror arm via an actuator motor. The radar system is electrically connected to a vehicle control unit. The vehicle control unit receives information from steering sensors and reversing sensors, and simultaneously receives the distance between the rearview mirror and the trailer tail detected by the radar system. The vehicle control unit processes the received information using preset vehicle parameters and transmits it to the rearview mirror control module via a CAN bus. The rearview mirror control module drives the actuator motor to adjust the position of the rearview mirror lens according to the input signal, achieving a follow-up field of view function. By installing a position sensor at the seat, the vehicle can automatically adjust the rearview mirror mirror position according to the seat position, improving adjustment efficiency.

This application relates to the field of simulation and testing technology, and in particular to a remote CAN simulation system and method. The system includes: a first terminal and a second terminal connected via Ethernet; the second terminal accesses the system to be simulated via a CAN bus or CANFD bus. The first terminal receives remote command parameters input from an external source, packages the remote command parameters based on a preset protocol to obtain a message body to be sent, and sends the message body to the second terminal. The second terminal receives the message body to be sent, parses it into a local call instruction, and calls the SocketCAN function according to the local call instruction to complete data interaction with the bus of the system to be simulated. This system provides a highly versatile remote CAN simulation architecture, which helps reduce system usage costs and facilitates deployment.

This invention discloses a multi-functional vehicle instrument panel, belonging to the field of vehicle instrument technology. It includes an instrument panel body, an instrument panel base plate, an instrument panel cover plate, a fixing component, a touch display component, an interface component, a multi-functional circuit board component, and a button component. The multi-functional circuit board component is equipped with an embedded instrument chip, a real-time operating system, a storage module, a power management module, a CAN bus communication module, a signal acquisition module, a control output module, a touch drive module, an audio processing module, and an NFC recognition module. The touch display component has a two-layer architecture of a main interface and a menu interface, supporting both button and touch interaction modes. The CAN bus communication module enables stable data interaction with the vehicle controller and peripherals. This invention solves the shortcomings of traditional instruments, such as limited operation, poor expandability, unreasonable screen design, low security, and insufficient intelligence. It is compatible with all types of electric vehicles from two wheels to six wheels, and has advantages such as high safety, high flexibility, high expandability, and high intelligence.

The subject of the application is a non-invasive measurement system, particularly in buildings intended for human habitation, while ensuring basic living needs, requiring the supply of various types of utilities. Each of the transducers (6) and / or (7) and / or (8) and / or (29) and / or (33) is installed in the building individually or in subgroups for installations with a large number of receivers, in the closest possible proximity, in locations ensuring individual recording and / or measurement of the appropriate type of medium, such as water, air, electricity, electricity, thermal energy. Transducers (6) and / or (7) and / or (8) and / or (29) and / or (33) are connected by signal cables (5) to a signal concentrator (4), which transmits data via a CAN bus (2) in the form of an appropriate cable harness to a central unit (3). The central unit (3) is connected to a network repository in a data cloud (21).

The application discloses a low-wind-noise flow guide damping installation assembly for connecting an automobile rearview mirror and a vehicle body and belongs to the technical field of automobile rearview mirror assembly, which comprises an installation base, the installation base is a triangular base, two installation bolts are fixedly connected to the installation base, and the installation base is connected and installed with an automobile A column through the installation bolts; a connecting arm is used for supporting a rearview mirror shell or a mirror body, the cross section of the connecting arm is drop-shaped, and a vehicle side camera mounting seat is rotationally connected to the bottom position of the connecting arm. The automobile speed data is obtained through CAN bus connection, and the flow guide blade and the vehicle side camera are adjusted according to the vehicle speed, thereby realizing differential synchronous control, expanding the image taking angle of the vehicle side camera on the basis of reducing wind noise and flow guide damping, expanding the coverage range of the side rear lane, reducing the risk of lane changing blind area, and facilitating the early capture of long-distance traffic flow dynamics.