25 results about "Automotive ethernet" patented technology

Disclosed are an automotive Ethernet circuit board and communications system, and a vehicle. The automotive Ethernet circuit board includes: a component placement layer, configured to carry a PHY chip and a control chip of the PHY chip; a plurality of signal wiring layers, configured to carry signal wiring between components in the component placement layer; and a signal shielding layer, located between the plurality of signal wiring layers and configured to prevent interference of a clock signal in the signal wiring. In the embodiments of the present application, a plurality of signal wiring layers are used for signal wiring between components, and a plurality of complete signal shielding layers are used to prevent interference of a clock signal in the wiring. The embodiments help reduce signal crosstalk between PCBs, prevent interference of a clock signal in signal wiring, and improve stability and consistency of a data communications system.

A system and method of processing Automotive Ethernet and High-Speed Ethernet signals. The method includes forming a first data path according to a first transmission protocol and a second data path according to a second transmission protocol. The method includes selecting the first data path to receive a first bitstream compliant with the first transmission protocol at a first data rate. The method includes encoding the first bitstream using a first encoding scheme to produce a first encoded bitstream. The method includes upsampling the first encoded bitstream to produce an upsampled bitstream at a different data rate. The upsampled bitstream aligns with transmission requirements of a Physical Medium Attachment (PMA) device. The method includes forwarding the upsampled bitstream to the PMA device.

A vehicle communication system comprises: Ethernet gateways, wherein each of the Ethernet gateways (i) is designated to serve as the Ethernet gateway in addition to performing other automotive functions in a vehicle; (ii) is coupled to multiple buses for respective subsystems having electronic control units (ECUs) communicating using respective automotive bus protocols; and (iii) is configured to encapsulate within Ethernet packets received communications of the respective automotive bus protocols; Automotive Ethernet cables connecting the Ethernet gateways in a ring topology, each of the Ethernet gateways connected to two others of the Ethernet gateways that are adjacent to the Ethernet gateway; and a communication matrix in each of the Ethernet gateways, wherein each of the ECUs is specified as belonging to at least one of multiple virtual local area networks (VLANs), wherein a VLAN tag is included in each of the Ethernet packets.

The application provides a communication control method and electronic equipment for an automobile Ethernet bus, the Ethernet bus uses a 4-core line to transmit information, the method comprises the following steps: timing control of ID information sent by a differential signal line receiving node, and arbitration; the master node with arbitration authority sends a target address identifier and a target node ID to the timing control differential signal line through a sending differential signal line; other nodes determine themselves as target nodes, then send information through the receiving differential signal line to reply information to the master node; the master node and the target node communicate through the receiving differential signal line and the sending differential signal line. The application uses a bus type Ethernet to solve the problems of low speed, many wire harnesses and difficult layout in traditional vehicle communication, adopts a multi-channel differential signal mode in physical signal transmission, balances data receiving and sending of each node, so that receiving and sending of each node do not conflict under the bus architecture, and the reliability of vehicle communication is ensured.

The invention relates to the technical field of vehicle-mounted Ethernet testing, in particular to a method for automatically testing the protocol consistency of a vehicle-mounted Ethernet. The method comprises the following steps: acquiring multi-controller protocols of a network layer, a transmission layer, a session layer, a presentation layer and an application layer in a vehicle-mounted Ethernet controller such as 10 base-T1, 100 base-T1 / TX and 1000 base-T1; the method comprises the following steps: connecting a vehicle-mounted Ethernet controller with test equipment, and debugging data of multiple controllers; debugging a test project in the test equipment, and verifying whether the script logic is consistent with the TCB specification or not; checking case triggering conditions, interaction processes and judgment standards; running the debugged test project, and synchronously scheduling each channel for parallel test in a multi-controller test scene; after the test is completed, automatically exporting a content analysis report and a log containing Ethernet packet capture data and environmental parameters; and according to a report viewing result, analyzing a test failure item reason in combination with a log.

A SOME / IP service testing system. The SOME / IP service testing system comprises a superordinate computer (10), an Ethernet converter (20), and at least one electronic control unit (30). The superordinate computer (10) is connected to the Ethernet converter (20) by means of an Ethernet wire harness, and the Ethernet converter (20) is connected to the electronic control unit (30) by means of an automotive Ethernet wire harness. The superordinate computer (10) is used for starting a testing interface thread, displaying a testing interface to a user, and acquiring operation information of the user in the testing interface. The superordinate computer (10) is further used for starting preset sub-threads on the basis of the operation information and testing a SOME / IP service in the electronic control unit (30), wherein the preset sub-threads at least include a service import thread, a connection subscription thread, a service request thread, a receiving thread, and a display thread. The superordinate computer (10) is further used for generating a testing result when the testing is completed, and on the basis of the testing result, determining whether the SOME / IP service in the electronic control unit (30) is abnormal.

A Physical Layer (PHY) device, for use in an Ethernet network in a vehicle, includes a link interface and a transceiver. The link interface is configured to connect to a full-duplex Ethernet link. The transceiver is configured to communicate over the full-duplex Ethernet link in a first direction using a High-Data-Rate (HDR) signal having a first data rate, and to communicate over the full-duplex Ethernet link in a second direction, opposite to the first direction, using a Low-Data-Rate (LDR) signal having a second data rate, lower than the first data rate. A frequency spectrum of the LDR signal is contained within a frequency spectrum of the HDR signal.

A Physical Layer (PHY) device (36), for use in an Ethernet network in a vehicle (24), includes a link interface (52) and a transceiver (48). The link interface is configured to connect to a full-duplex Ethernet link (40). The transceiver is configured to communicate over the fullduplex Ethernet link in a first direction using a High-Data-Rate (HDR) signal having a first data rate, and to communicate over the full-duplex Ethernet link in a second direction, opposite to the first direction, using a Low-Data-Rate (LDR) signal having a second data rate, lower than the first data rate. A frequency spectrum of the LDR signal is contained within a frequency spectrum of the HDR signal.

The invention relates to a method and ethernet physical layer device for detecting, classifying and localizing cable faults of an ethernet physical cable, particularly an automotive ethernet PHY, using a time domain reflectometry algorithm, using a hybrid mode for selectively subtracting sent signals from received signals for fault detection and classification and considering send and received signals during fault localization.

The invention provides an interrogator circuit in an automotive Ethernet network system, comprising a hybrid circuit configured to be coupled to a media-dependent interface circuit for data communication with a responder circuit; a transmit circuit coupled to the hybrid circuit and configured to generate and provide a transmit signal to the hybrid circuit; a receive circuit coupled to the hybrid circuit and configured to receive and parse a receive signal from the hybrid circuit to generate a data signal; a processing circuit coupled to the receive circuit and configured to process the data signal; a physical coding sublayer circuit coupled to the processing circuit and configured to control operation of the transmit circuit; and an echo cancellation circuit coupled between the transmit circuit and the receive circuit and configured to generate an echo cancellation signal.

An ethernet connector (4) for a motor vehicle (2) has two signal leads (5–8) arranged adjacent each other, each having a rectangular cross section with a width (w) and a height (h), the height (h) being smaller than the width (w). A height side of each signal lead defines the height and a width side defines the width. In a first portion (L1) of the connector (4), the at least two signal leads (5–8) are each arranged with the width sides being parallel to each other and to a longitudinal axis (L) of the signal leads. In a second portion (L2) of the connector (4), at least a first one of the signal leads (5–8) is twisted by 90° with respect to the first portion (L1) around the longitudinal axis (L) of the first one of the signal leads.

An automotive ethernet connector, comprising: a metal shell assembly; an insulating body, positioned within the metal shell assembly; a plurality of terminals, positioned within the insulating body; a wire crimp, positioned within the metal shell assembly and fixed behind the insulating body, wherein the wire crimp is provided with a body portion, the front end of the body portion is provided with a sleeve portion, and the sleeve portion is provided with a plurality of protrusions extending outward, the protrusions connect to the inner surface of the metal shell assembly; and a cable assembly, fixed within the wire crimp, wherein the cable assembly is electrically connected to the terminals. Therefore, the automotive ethernet connector in this invention has better electromagnetic interference protection, improved high-frequency signal transmission stability, waterproofing, and a stable structure.

The invention relates to the technical field of cable materials, and particularly discloses a polypropylene insulating material for an automobile Ethernet cable and a preparation method of the polypropylene insulating material. The polypropylene insulating material for the automobile Ethernet cable comprises the following components in parts by weight: 60-105 parts of polypropylene resin; 0 to 40 parts of SEBS resin; 0-15 parts of a compatilizer; 0.5 to 1.5 parts of a nucleating agent; and 0.3 to 1 part of an antioxidant. Researches show that the polypropylene insulating material for the automobile Ethernet cable has the advantages of good adhesive force, good mechanical property, high hardness and the like, also has the performance requirements of stable capacitance in water, small ovality, high and low temperature resistance and the like, and is excellent in comprehensive performance; therefore, the requirement of an automobile Ethernet communication cable can be met.

The invention relates to a method for checking communication between two control units (1) of a vehicle connected via Automotive Ethernet, wherein a signal transmission on a communication channel (2) between the control units (1) is detected (S1), a course of a transmitted energy on the communication channel (2) is determined (S2) and compared with predetermined limit values ​​(S3), wherein different phases of a connection setup between the control units (1) are determined on the basis of the transmitted energy (S4).

The utility model provides an efficient heat dissipation type automobile Ethernet connector, which belongs to the technical field of automobile Ethernet connectors and comprises an Ethernet connection adapter. The front cover plate is arranged at one side end of the Ethernet connection adapter; the data connection socket is formed in one side end of the Ethernet connection adapter and one side end of the front cover plate; the number of the heat dissipation mechanisms is two, each heat dissipation mechanism comprises a sliding groove, a sliding block, a plugging block, a heat dissipation hole, a spring groove, a reset spring, a spring push block and a movable sleeve, the sliding groove is formed in one side end of the front cover plate, the sliding block is slidably connected into the sliding groove, the plugging block is fixedly connected to one side end of the sliding block, and the spring push block is fixedly connected to the other side end of the sliding block. When the Ethernet connection adapter is connected with the data port, the operation load is increased, and the temperature in the body is increased, the data end also opens the plugging block to open the heat dissipation holes for heat dissipation, and then the heat dissipation efficiency is improved.

This invention provides a method and system for automotive Ethernet intrusion detection based on multi-stage deep learning, relating to the field of automotive Ethernet technology. The method includes: after collecting multi-protocol traffic in a bypass mode and synchronizing it using gPTP timing, generating a windowed packet sequence based on a sliding time window; extracting and generating two types of feature data: a statistical aggregation feature vector and a network traffic imaging feature matrix; using a first-stage random forest to quickly detect and output early warnings and a first-stage confidence level for the statistical aggregation feature vector; when anomalies occur, using a second-stage pruned convolutional neural network to perform fine classification of the network traffic imaging feature matrix; finally, performing decision fusion, forcibly accepting the fine classification result when there is a divergence, and using the first-stage confidence level as feedback to update the judgment threshold. This invention takes into account the limited computing power of in-vehicle systems, significantly reduces the false alarm rate, and achieves dynamic adaptive defense.

An automotive ethernet connector, comprising: a front metal shell provided with a first main portion, a shrink portion formed on the first main portion, and an extension portion extended from the shrink portion; an elastic metal shell sleeved on the extension portion and including a front ring portion and a rear ring portion placed to the front and rear ends of the extension portion; a rear metal shell covering the front metal shell and the rear ring portion; a gap formed between the rear metal shell, the shrink portion, and the extension portion; and a terminal assembly disposed within the front metal shell and the rear metal shell; wherein the rear ring portion is disposed in the gap to contact with the sleeve portion and the extension portion. Therefore, the automotive ethernet connector in this invention has better electromagnetic interference protection, high-frequency signal transmission stability, stable structure, and is waterproof.

The invention belongs to the technical field of connectors, particularly relates to a female terminal structure and an automobile Ethernet connector containing the female terminal structure, and aims to solve the problems that a connecting structure is simple and single, a gap still exists between a female terminal and a male terminal after connection, oil, a cleaning agent and the like are easy to adhere and permeate, and hidden danger is caused to operation of the connector. According to the scheme, the female terminal comprises a female terminal body, and two clamping grooves are formed in the female terminal body. The female terminal structure and the automobile Ethernet connector containing the female terminal structure have the effect of reducing connection hidden dangers, after the male terminal body and the female terminal body are preliminarily connected through clamping, the device uses the elastic coating sleeve to carry out coating type connection on the terminal connection part, so that the connection stability is improved, and the connection safety is improved. And meanwhile, a gap between the male terminal body and the female terminal body can be coated and covered through coating type connection, so that oil, a cleaning agent and the like are prevented from adhering and permeating, and the use effect of the device is improved.

An automotive ethernet connector, comprising: an insulating housing, wherein the insulating housing is provided with a recessed mounting slot, the mounting slot is provided with an assembly hole that penetrates the insulating housing, and the assembly hole connects the inner surface of the insulating housing with the mounting slot; a connector assembly, positioned within the insulating housing, wherein the connector assembly is provided with a positioning hole, the positioning hole aligns to the assembly hole; and a locking member, fixed to the lower surface of the insulating housing, wherein the locking member is provided with a plate body positioned within the mounting slot, the upper surface of the plate body extends upward to form a positioning post fixed within the assembly hole, and the top end of the positioning post protrudes through the assembly hole and is fixed within the positioning hole.

The utility model discloses an automobile Ethernet connector with high anti-interference performance, which comprises a shell, a terminal, an insulating rubber core, a first shielding shell, a second shielding shell and an end cover, the end cover is arranged at the tail end of the shell, a positioning spring is arranged between the end cover and the second shielding shell, a first positioning elastic sheet and a second positioning elastic sheet are arranged on the outer side of the first shielding shell, and the second positioning elastic sheet is arranged on the outer side of the second shielding shell. And a first positioning boss and a second positioning boss are arranged on the inner side of the mounting inner cavity. According to the utility model, the first shielding shell and the second shielding shell cover the outer side of the insulating rubber core, and the first positioning elastic sheet and the second positioning elastic sheet abut against the first positioning boss and the second positioning boss in the mounting inner cavity, so that the first shielding shell and the outer shell are axially fixed; the problem that a traditional Ethernet connector is insufficient in anti-electromagnetic interference, waterproof, dustproof and anti-seismic stability is effectively solved, and the anti-interference performance of the automobile Ethernet connector is improved.

The utility model relates to the technical field of connectors, in particular to a quickly-pluggable and wear-resistant automobile Ethernet connector which comprises a first connector, and a socket is formed in one end of the outer portion of the first connector. According to the quickly-pluggable and wear-resistant automobile Ethernet connector, when a movable circular truncated cone enters a circular cavity, the movable circular truncated cone is inserted into the circular cavity, and the movable circular truncated cone is inserted into the circular cavity; when the movable circular truncated cone crosses the two triangular blocks, the compression spring is extruded and pushes the two triangular blocks to enter the mounting groove, when the movable circular truncated cone crosses the two triangular blocks, limitation of the compression spring is relieved, the two triangular blocks are driven to reset, and therefore locking is achieved, and due to the design, the inserting and pulling process is simplified, and the stability of the connector is improved. When the second connector needs to be separated from the first connector, the second connector continues to be pushed to move towards the first connector, and when a second telescopic rod and a reset spring are compressed to be in the shortest state, a movable circular truncated cone can cross two triangular blocks to be attached to a fixed circular truncated cone. And then the second joint is pulled outwards to move out of the interior of the circular cavity, so that quick plugging is realized, and the connection reliability is good.

This invention belongs to the field of automotive testing technology and discloses a multifunctional automotive TSN testing device and its testing method. The testing method includes: enabling all test ports to share the same time base; generating inbound and outbound timestamps for all incoming and outbound frames in a unified time domain; forming a port-level time-aware scheduling matrix; deeply binding the Layer 3 packet payload to a designated physical port and outputting test traffic through the timestamp injection unit of each port; recording the inbound and outbound timestamps of abnormal frames under the same time base; generating TSN consistency verification results based on the inbound and outbound timestamps; and performing cross-protocol delay consistency verification between automotive Ethernet and CAN / LIN. This invention achieves TSN function verification and cross-protocol delay consistency testing under a unified time base, improving the overall testing accuracy and consistency analysis capability in a multi-protocol automotive network environment.

This application provides a method, system, device, and medium for laying out a transmission link in an automotive Ethernet system, belonging to the field of vehicle technology. The method includes: based on the identification of a signal link reference diagram, initially determining the layout position of each signal link device; determining the ground wire layout, pad layout, and trace layout of the transmission link in the automotive Ethernet system using the signal link reference diagram, layout position, and type of each signal link device, thereby obtaining a preliminary layout diagram of the transmission link that meets Ethernet signal transmission specifications, ensuring effective transmission and processing of 1000Base-T1 signals in the automotive environment, and ensuring initial board success rate and design reliability; performing layout simulation on the preliminary layout diagram and signal simulation analysis on the updated layout diagram; and by standardizing the 1000Base-T1 PCB design process and integrating signal integrity simulation technology, ensuring effective transmission and processing of 1000Base-T1 signals in the automotive environment and improving the consistency and reliability of transmission performance.

A vehicular communication system includes multiple vehicle subsystem assemblies, each including at least a first Ethernet network interface and a second Ethernet network interface. A first Ethernet switch is communicatively coupled to the first Ethernet network interfaces of the multiple vehicle subsystem assemblies. A second Ethernet switch is communicatively coupled to the second Ethernet network interfaces of the multiple vehicle subsystem assemblies and provides network redundancy regarding the first Ethernet switch. For each vehicle subsystem assembly, a network controller determines whether the vehicle subsystem assembly is authorized to be included in the vehicular communication system, and in response to determining that the vehicle subsystem assembly is not authorized to be included in the vehicular communication system, control the first Ethernet switch and the second Ethernet switch to block Ethernet traffic corresponding to the vehicle subsystem assembly that is not authorized to be included in the vehicular communication system.