33 results about "Automotive ethernet" patented technology

The invention discloses an automotive Ethernet outer conductor device and a connector, belonging to the technical field of connectors. The automotive Ethernet outer conductor device includes a shielding shell, an insulator and a signal terminal. The shielding shell includes a shell and a shrapnel. The shell includes a socket part and a shielding body connected in sequence. The shell has a through hole that runs through the socket part and the shielding body in sequence. At least two installation holes are spaced apart along the outer wall of the socket part in the circumferential direction, and the shrapnel is arranged in the installation hole. The shrapnel includes a fixed end and a free end. In the direction of the central axis of the through hole, the fixed end is connected to the installation hole and arranged opposite One of the two inner walls, the fixed ends of at least two opposite shrapnels are respectively located at the two ends of the socket part; the insulator is arranged in the through hole, and a socket hole is opened in the insulator; the signal terminal is inserted in the socket hole Inside, one end of the signal terminal is connected to the cable. The invention can reduce the external electromagnetic interference, improve the shielding effect, and reduce the plugging force when the socket part is connected.

A method is presented by which a node may determine the topology of a computation system wherein the computation system is a network of nodes, and wherein multiple nodes are capable of being a grandmaster clock source. The method includes starting a best clock selection process, announcing clock information, and if the node is not acting grand master then receiving messages announcing clock information from other nodes of the network. The method also includes extracting topology information from the messages, and if the node is acting grandmaster then retiring from the position of grandmaster,and repeating the best clock selection process steps until no node of the network becomes acting grandmaster.

The invention discloses a UDS function addressing method based on automotive Ethernet, which is characterized in that it includes the following steps: mapping the function addressing address with the IP multicast address, establishing a mapping table and building it into the Ethernet diagnostic function According to the mapping table, the server controls the access authority of the external test equipment; sends the diagnostic communication of the functional addressing communication mode to the server; after the server receives the functional addressing diagnostic message, it performs diagnostic processing. Adopting the technical solution of the present invention, the client only needs to process once and send a data packet when processing function addressing and sending, and the processing time of the external test equipment, the overall communication time, and the occupancy of the system bandwidth are all obtained. Nicely improved.

The invention discloses a communication gateway and a method for converting an automobile Ethernet bus to a CAN bus. The system includes an automobile Ethernet transceiver, a processor, and a CAN bus transceiver; the automobile Ethernet transceiver and the CAN bus transceiver are both connected to the processor Connection; the automotive Ethernet transceiver is connected to the equipment connected to the automotive Ethernet through the automotive Ethernet bus interface circuit, and the CAN bus transceiver is connected to the equipment connected to the CAN bus network through the CAN bus network interface circuit. The present invention solves the problem that direct communication cannot be performed due to the difference between the frame structure of the automotive Ethernet data transmission and the frame structure of the CAN bus data transmission by setting the gateway as a conversion device during the communication between the automotive Ethernet and the CAN bus. The barrier-free communication between the automotive Ethernet and the CAN bus network is realized, and the real-time performance of the communication process is guaranteed.

A system for controlling the impact of process and temperature in passive signal detector includes a voltage level detector, a first transistor with a drain electrically connected to a first input of the voltage level detector, and a second transistor with a drain electrically connected to a second input of the voltage level detector. The first transistor has a threshold voltage of a first voltage value. The threshold voltage corresponds to a minimum gate-to-source voltage to create a conducting path between source and drain terminals of a transistor. The second transistor has a threshold voltage of the first voltage value. An offset voltage is applied across a gate of the first transistor and a source of the second transistor, and applied across a gate of the second transistor and a source of the first transistor. A difference between a threshold voltage and the offset voltage is constant.

A system and method for detecting abnormal motor vehicle operation and providing notification and alerts to third parties, comprising: an impediment proximity detection subsystem including sensors at least mounted at external surfaces of said vehicle, said impediments consisting of at least fixed and moving objects external to said vehicle; a vital sign detection subsystem installed in said vehicle, including driver monitoring sensors and providing a measure of at least driver pulse rate and hand location; a controller installed in said vehicle, for receiving and processing sensor produced signals; an alarm subsystem installed in said vehicle, producing at least one of a visual or vibrational signal; a cloud interface subsystem including at least a WiFi transceiver installed in said vehicle, and a Google Cloud IoT Service or equivalent, and a vehicle to vehicle communication subsystem installed in said vehicle, using the BroadR-Reach® standard for automotive Ethernet or its evolving equivalents.

The embodiment of the application discloses an Ethernet switching module. The technical solution provided by the embodiment of the present application connects the data transceiver interfaces of the twisted-pair Ethernet transceiver, the optical fiber Ethernet transceiver, the twisted-pair side standard Ethernet transceiver, and the fiber-optic side standard Ethernet transceiver to each other, and according to The working mode of the twisted pair Ethernet transceiver or the standard Ethernet transceiver on the fiber side, configure the fiber optic Ethernet transceiver into an adapted working mode, and realize the connection between the twisted pair Ethernet and the standard Ethernet on the twisted pair side, The conversion of physical layer protocols between optical fiber Ethernet and standard Ethernet on the optical fiber side and between twisted pair Ethernet and optical fiber Ethernet realizes the conversion of different Ethernet interfaces and facilitates the testing of automotive Ethernet.

The present invention provides a redundant scheduling method for automotive Ethernet based on ring networking. Under the circular automotive Ethernet redundant networking, a complete set of negotiation and scheduling mechanism is provided for block gateways, and all block gateways are As a logical gateway device, redundant broadcast messages are digested inside the logical gateway to avoid the occurrence of loop problems; distributed elastic forwarding technology is used inside the logical gateway to realize the second and third layer forwarding of messages, and the maximum Maximize the processing capacity of each block gateway; when the connection between any two block gateways fails, the ring connection is switched to a chain connection, and the business of this mechanism is not affected, and can quickly converge and switch. Ensure high availability of automotive networks.

The present invention provides an automobile intelligent infotainment service system, which digitally processes intelligent information including entertainment information, and realizes distributed deployment with a man-machine interface client, which at least includes mutually separated: automobile Ethernet intelligent interconnection antenna A controller, which includes an antenna and a functional module, a central processing unit, and an Ethernet communication interface; and, a man-machine interface client, which includes an operation interaction module, an arithmetic processing unit, and an Ethernet communication interface; wherein, the man-machine interface The client and the automotive Ethernet intelligent interconnection antenna controller are based on the distributed architecture design to realize mutual communication through the Ethernet communication interface. The technical solution of the present invention highlights the independence of the infotainment functional domain and avoids system complexity and redundancy; more reasonably Deploy interconnection and communication function modules in the car; continue to use the function and performance advantages of its roof antenna digital gateway; serve more than two or more man-machine interface windows in the car, and the software angle can be reasonably realized; isolation Separate isolation and deployment of functional applications with relatively large security vulnerabilities in communication and interconnection can reduce the impact on systems with high security levels in the car, etc.

The invention discloses an automobile controller based on a block gateway electronic control unit, which includes a block gateway electronic control unit ring-shapedly deployed at different positions of the vehicle body with the automobile Ethernet TSN as the backbone network; the block gateway electronic control unit includes an automobile Processor and FPGA; the automotive processor collects external sensor data, performs fusion calculations, and makes judgments and checks on the calculation results; the automotive processor connects to the FPGA through the PCIE interface for high-speed data exchange. The electronic control unit of the block gateway of the present invention is deployed in different positions of the vehicle body, and an automotive processor with sufficient computing power is used. When a functional safety defect occurs, the vehicle control will preferentially exit the automatic control mode, and take reasonable emergency braking, etc. remedy. The export direction of the signal is bridged at any time through the FPGA, which provides convenience for the electrical wiring of the vehicle after the block gateway electronic control unit is deployed to different positions of the vehicle body.

The embodiment of the present application discloses an automotive optical fiber Ethernet communication device. The technical solution provided by the embodiment of the present application controls the work of the sleep wake-up module through the control module. When the automotive optical fiber Ethernet communication is required, the sleep wake-up module is controlled to power on the optical fiber Ethernet transceiver and the photoelectric conversion module, and communication is required. The photoelectric conversion module is connected between the two nodes of the line through optical fiber to realize the Ethernet data transmission between the two communication nodes. Control, using optical fiber communication to play the role of galvanic isolation, also because of its excellent EMC performance, reduces the complexity and cost of the EMC debugging process, improves the EMC performance of automotive Ethernet, and meets the requirements for galvanic isolation.

The invention discloses a vehicle-mounted Ethernet switch hardware testing method, device, equipment and storage medium. The method is connected to the vehicle-mounted Ethernet and industrial Ethernet. After the vehicle-mounted Ethernet is connected to a computer, the computer sends The target broadcasts the message to the Ethernet gateway; receives the response message fed back by the Ethernet gateway, analyzes the response message, and generates an analysis message; between the analysis message and the target broadcast message When the period is the same and the total number of packets is the same, it is determined that the transmission of the vehicle Ethernet switch is normal, and the existing Ethernet test equipment can be used to test the vehicle Ethernet and industrial Ethernet in the gateway at the same time, without any new special test for vehicle Ethernet Tools and test software, the solution is simple and reliable, reducing the cost of testing, without integrating the operating system, which can minimize the difficulty of testing software development and shorten the development cycle.

The invention relates to a method for designing an automotive Ethernet bus based on the DDS protocol, comprising the following steps: generating the topology structure of Service and the topology structure of the vehicle Ethernet architecture through UML language, wherein the topology structure of Service includes the following interfaces: Key , Partition and QoS, transform the topology structure of Service and the topology structure of the vehicle Ethernet architecture into an interface definition language IDL file conforming to the DDS protocol specification, and then generate a service interface code from the IDL file, and the service interface code includes corresponding Data files and related publish-subscribe node codes, and finally deploy the service interface codes to the corresponding application layer codes. The invention utilizes the direct-viewing and easy-to-understand features of the UML language to improve the design efficiency of the automotive Ethernet bus and reduce the occurrence of bus failures.