33 results about "Automotive ethernet" patented technology

A transmission method of a domain gateway over a vehicle network based on automotive Ethernet includes receiving, by a domain gateway of a first domain, transmission data on a CAN packet basis from a transmitting-side ECU; transmitting, by the domain gateway of the first domain, the transmission on an Ethernet packet basis to a domain gateway of a second domain; and transmitting, by the domain gateway of the second domain, the transmission data on a CAN packet basis to a receiving-side ECU. The CAN packet includes a CAN ID field, and the CAN ID field includes a CAN message section and an authentication section.

The invention provides an automobile intelligent information entertainment service system. The system performs digitalized processing on intelligent information including entertainment information andachieves distributed deployment with a human-computer interface client, and at least comprises an automobile Ethernet intelligent interconnected antenna controller and the human-computer interface client which are separated, wherein the automobile Ethernet intelligent interconnected antenna controller comprises an antenna, a function module, a central processing unit and an Ethernet communicationinterface; the human-computer interface client comprises an operation interaction module, an operation processing unit and an Ethernet communication interface, and the human-computer interface clientand the automobile Ethernet intelligent interconnected antenna controller achieve communication through the ethernet communication interface on the basis of the distributed architecture design. According to the technical scheme, the independence of the information entertainment functional domain is extruded, and system complexity and redundancy are avoided; interconnection and communication function modules are deployed inside the automobile more reasonably; the roof antenna digital gateway function and performance advantages continue to be brought into play; the system is service for two ormore human-computer interface windows inside the automobile, the software angle can be reasonably achieved; communication isolation is achieved, and for independent isolation deployment with functionapplication with the large interconnection security flaw, the influence on the system with the high security level inside the automobile is reduced.

The invention discloses a UDS function addressing method based on an automobile Ethernet, and the method comprises the following steps: carrying out the mapping of a function addressing address and anIP multicast address, building a mapping table, and enabling the mapping table to be built in a node which is used for an Ethernet diagnosis function; according to the mapping table, completing the control of the server on the access permission of the external test equipment; sending the diagnosis communication of the functional addressing communication mode to a server; and after the server receives the function addressing diagnosis message, carrying out diagnosis processing. By adopting the technical scheme provided by the invention, the client only needs to process and send one data packetonce when processing function addressing and sending, and the processing time of the external test equipment, the overall communication time and the occupation of the system bandwidth are well improved.

The invention provides an automobile Ethernet redundancy scheduling method based on ring networking, which provides a set of complete negotiation and scheduling mechanism for block gateways under thering automobile Ethernet redundancy networking, regards all the block gateways as a logic gateway device, digests redundant broadcast messages in the logic gateway, and avoids generation of a loop problem; a distributed elastic forwarding technology is adopted in the logic gateway to realize two-layer and three-layer forwarding of the message, and the processing capacity of each block gateway is exerted to the maximum extent; and when the connection between any two block gateways fails, the annular connection is switched into the chain connection, so that the service of the mechanism is not influenced and can be quickly converged and switched, and the high availability of the automobile network is ensured.

The embodiment of the invention discloses an automobile optical fiber Ethernet communication device. According to the technical scheme provided by the embodiment of the invention, the work of the sleep awakening module is controlled through the control module; when automobile optical fiber Ethernet communication needs to be carried out, the sleep awakening module is controlled to electrify the optical fiber Ethernet transceiver and the photoelectric conversion module, a photoelectric conversion module is connected between two nodes needing communication connection through an optical fiber. Ethernet data transmission of the two communication nodes is realized, the photoelectric conversion module performs photoelectric conversion on Ethernet data, Ethernet data are transmitted and received through the optical fiber Ethernet transceiver, optical fiber communication is used for achieving the current isolation effect, due to the excellent EMC performance of the optical fiber Ethernet transceiver, the complexity and cost of the EMC debugging process are reduced, the EMC performance of the automobile Ethernet is improved, and the requirement for current isolation is met.

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 invention discloses an Ethernet switching module. According to the technical scheme provided by the embodiment of the invention, data transceiving interfaces of a twisted pair Ethernet transceiver, an optical fiber Ethernet transceiver, a twisted pair side standard Ethernet transceiver and an optical fiber side standard Ethernet transceiver are connected with one another; according to the working mode of the twisted-pair Ethernet transceiver or the optical fiber side standard Ethernet transceiver, the optical fiber side standard Ethernet transceiver is selected; the optical fiber Ethernet transceiver is configured to be in an adaptive working mode; conversion of physical layer protocols between the twisted-pair Ethernet and the twisted-pair side standard Ethernet, between the optical fiber Ethernet and the optical fiber side standard Ethernet and between the twisted-pair Ethernet and the optical fiber Ethernet is achieved, conversion of different Ethernet interfaces is achieved, and testing of an automobile Ethernet is facilitated.

A node may determine the topology of a computation system. The computation system is a network of nodes and 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. Topology information is extracted from the messages, and if the node is acting grandmaster then retiring from the position of grandmaster. The best clock selection process steps are repeated until no node of the network becomes acting grandmaster.

Disclosed are an apparatus and method for communicating data in an in-vehicle network. The method, performed by apparatuses for communicating data on a transmission side and a reception side, includes determining, by the apparatus on the transmission side, whether data collected from the in-vehicle network is changed; creating, by the apparatus on the transmission side, an authentication value based on the determination as to whether the data is changed, creating a message including the data and the authentication value and transmitting the message to the apparatus on the reception side; receiving, by the apparatus on the reception side, the message; creating, by the apparatus on the reception side, a verification value using data extracted from the message; and verifying, by the apparatus on the reception side, the integrity of the apparatus on the transmission side by comparing the authentication value extracted from the message with the verification value.