50 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.

An automotive Ethernet system-on-chip (SoC) implements a power management state that is a lower power standby for an embedded controller of a physical layer (PHY). The SoC combines an always-on power domain (AON) and a switched power domain (SWP). A power manager activates the lower power standby state through a standby signal sent to a power controller in the AON. The standby state enables the power manager of the SoC to switch a system clock from a high-frequency clock to a low frequency clock generated in the AON and turns off a clock dedicated to the PHY.

An automotive Ethernet system-on-chip (SoC) implements a power management state that is a lower power standby for an embedded controller of a physical layer (PHY). The SoC combines an always-on power domain (AON) and a switched power domain (SWP). A power manager activates the lower power standby state through a standby signal sent to a power controller in the AON. The standby state enables the power manager of the SoC to switch a system clock from a high-frequency clock to a low frequency clock generated in the AON and turns off a clock dedicated to the PHY.

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.

1. The name of this design product: Automotive Ethernet Converter (SE2001). 2. The purpose of this design product: to achieve physical layer conversion from the in-vehicle Ethernet T1 to the standard Ethernet RJ45 interface, so that users can easily realize data communication between the computer and the controller with in-vehicle Ethernet. The communication rate supports 1000M and 100M. 3. The key point of the design of this product lies in its shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

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.

The 100M vehicle-mounted Ethernet chip type common-mode inductor comprises a middle column, a magnetic chip, a first enameled wire and a second enameled wire, a first flange and a second flange are vertically welded to the two ends of the middle column respectively, and the middle column, the first flange and the second flange form an H-shaped magnetic core framework. The middle column and the first flange and the second flange which are vertically welded at the two ends form the H-shaped magnetic core framework, a stable magnetic conduction path is provided for the inductor, and it is ensured that a magnetic field is intensively distributed in a middle column area; a pad electrode a and a pad electrode b of the first flange and a pad electrode c and a pad electrode d of the second flange adopt a non-protruding design that the pad electrode a and the pad electrode b are flush with the bottoms of the flanges, compared with a traditional protruding electrode, the electrodes can be prevented from being damaged by stress during installation, and the stability of 100M vehicle-mounted Ethernet signal transmission is ensured; the first varnished wire and the second varnished wire respectively form a first winding and a second winding on two sides of the center post, and a crossing section between the two windings realizes primary and secondary crossing commutation.

Discussed herein is a technology that enables dynamic traffic monitoring of automotive Ethernet traffic over a network topology. The technology includes a switching node receiving a traffic mirroring request from a request node over an automotive Ethernet network, and based on this code, the switching node determines a source port and a source switch of the source node. The technology also includes the switching node determining a traffic-mirroring network path between the source node and the request node based on a received network topology matrix. The technology also includes the switching node initiating mirroring of the source node's network traffic by sending traffic-mirroring instructions to the switches in the determined traffic-mirroring network path, instructing those switches to mirror the source port's network traffic to the request node.

The in-vehicle Ethernet physical layer (PHY) transceiver (32) includes an analog front end (FE-46) and a digital processor (44). The FE is configured to receive analog Ethernet signals via a physical Ethernet link (36) while the Ethernet PHY transceiver is operating in the vehicle (24), and is configured to convert the received analog Ethernet signals into digital signals. The digital processor is configured to: maintain one or more noise distributions (84) that characterize noise signals of corresponding predefined noise types that are expected to disrupt the received analog Ethernet signals; classify actual noise signals present in the digital signals into one of the noise types using the noise distributions; and apply noise mitigation operations selected in response to the given noise type in response to determining that the actual noise signal matches a given noise type among the predefined noise types.

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.

An inquirer-side circuit of an automotive Ethernet system includes: a hybrid circuit arranged to operably conduct data communication with a respondent-side circuit through an MDI circuit; a transmitting circuit coupled with a hybrid circuit and arranged to operably generate and provide a transmission signal to the hybrid circuit; a receiving circuit coupled with the hybrid circuit and arranged to operably receive and parse a received signal transmitted from the hybrid circuit to generate a data signal; a processing circuit coupled with the receiving circuit and arranged to operably process the data signal; a physical coding sublayer circuit coupled with the processing circuit and arranged to operably conduct a physical coding operation according to the instruction of the processing circuit to control the operations of the transmitting circuit; and an echo cancellation circuit coupled between the transmitting circuit and the receiving circuit, and arranged to operably generate an echo cancellation signal.

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 provides a vehicle-mounted Ethernet interface test method and device and a medium, and belongs to the technical field of vehicles. The method comprises the following steps: analyzing a first configuration file of the vehicle-mounted Ethernet, and extracting message attributes and Ethernet signal information of the vehicle-mounted Ethernet; and determining a first write-in unit in the first write-in area according to the message attribute and the Ethernet signal information so as to correspondingly write in the Ethernet signal information. And analyzing a second configuration file of the vehicle-mounted Ethernet, and extracting interface signal information corresponding to the Ethernet signal information according to the Ethernet signal information. And according to the message attribute and the interface signal information, determining a second write-in unit in the second write-in area so as to correspondingly write in the interface signal information. And generating an interface test case according to all the matched first write-in areas and second write-in areas, and testing to obtain a test result. The test period is effectively shortened, the problem that the test sequence is omitted or incomplete in the test case is avoided, and the test efficiency is improved.

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 automotive Ethernet physical-layer (PHY) transceiver includes an Analog Front End (AFE) and a digital processor. The AFE is coupled via a full-duplex Ethernet link to a peer transceiver. The AFE is configured to receive from the peer transceiver, over the full-duplex Ethernet link, an analog Ethernet signal conveying data symbols, at a reception data rate that is lower than a transmission data rate used in transmitting data from the PHY transceiver to the peer transceiver, the Ethernet signal being modulated by a spreading sequence having a Spreading Factor including a ratio between a spreading chip-rate and the reception data rate, and to convert the received analog Ethernet signal into a digital signal. The digital processor is configured to de-spread the digital signal using the spreading sequence to recover the data symbols.

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.

The present application discloses a flashing method for a forwarding table in an automotive Ethernet, an electronic device, and a medium. The method comprises: segmenting a hardware forwarding table in an initialization stage; managing forwarding table entries in segments obtained by the segmentation; and when switching information is acquired, performing protection switching on the basis of segment information. The present application can reduce a traversal range, and effectively reduce time occupied by forwarding table entry refreshing in a protection switching process, so that the protection switching time of an automotive Ethernet switch system using one hardware forwarding table meets the industry requirement of less than 50 ms.

This application relates to the field of automotive Ethernet technology, specifically disclosing an automotive communication method and system based on the Ethernet communication protocol. The system includes: a communication service module for confirming the data transmission object and providing a data communication interface for transmitting protocol frame data; a data transmission module for constructing a response queue based on the data transmission object and the size of the protocol frame data, and for sending and receiving protocol frame data according to the response queue; a data parsing module for encoding the data to be sent to generate byte order data, and for parsing the received protocol frame data to extract message content; and a data processing module for processing the message content and feeding back the processing result to the data transmission module. This application improves automotive communication efficiency by constructing a response queue based on the data transmission object and the time interval for segmented data transmission, thereby flexibly handling various communication processes through multi-threading.

To perform full-duplex communication using zero disparity modulation.SOLUTION: In an asymmetric automotive Ethernet link 20, a camera-side PHY device 24A includes an HS transmitter 36, an LS receiver 40, and a hybrid 44 as a cable interface. The HS transmitter acquires sensor data from a camera 32, generates an HS signal, modulates the sensor data, and transmits the HS signal via the hybrid through the cable 28. The LS receiver receives an LS signal, demodulates the LS signal, and forwards control data to the camera. A central PHY device 24B includes an HS receiver 48, an LS transmitter 52, and a hybrid. The HS receiver receives the HS signal, demodulates the HS signal, and forwards the sensor data to its locally connected switch or a central controller. The LS transmitter acquires the control data from the switch or the central controller, generates the LS signal, and transmits the LS signal.SELECTED DRAWING: Figure 1

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.