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Electronic control unit, communication method, and in-vehicle network system

An electronic control unit, vehicle network technology, applied in the direction of bus network, electrical components, transmission system, etc., can solve problems such as being unsuitable for data transmission

Active Publication Date: 2018-08-31
PANASONIC INTELLECTUAL PROPERTY CORP OF AMERICA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In CAN, the data that can be sent by one frame (standard format data frame) is less than or equal to 8 bytes, so it is not suitable for the transmission of data with a large amount of data, such as images captured by vehicle cameras.

Method used

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  • Electronic control unit, communication method, and in-vehicle network system
  • Electronic control unit, communication method, and in-vehicle network system
  • Electronic control unit, communication method, and in-vehicle network system

Examples

Experimental program
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Embodiment approach 1

[0063] Hereinafter, as an embodiment of the present disclosure, an in-vehicle network system 10 including a plurality of electronic control units (ECUs) and hubs (HUBs) for transferring (exchanging) data in the in-vehicle network will be described with reference to the drawings.

[0064] [1.1 Overall configuration of the in-vehicle network system 10]

[0065] figure 1 It is a diagram showing an in-vehicle network 11 including two networks in the in-vehicle network system 10 .

[0066] The vehicle 9 is equipped with various devices such as a control device, a sensor, an actuator, a user interface device, and an electronic control unit (ECU). The in-vehicle network system 10 is a network communication system having an in-vehicle network 11 for communicating information to and from various devices such as sensors and ECUs mounted in the vehicle 9 . The in-vehicle network 11 is configured to include: a control system network 1 (first network), which conforms to the CAN (Controll...

Embodiment approach 2

[0178] Hereinafter, the in-vehicle network system 10 shown in Embodiment 1 (refer to figure 2 ) will be described as an example obtained by partially modifying the configuration.

[0179] [2.1 Configuration of in-vehicle network system 10a]

[0180] Figure 20 It is a diagram showing a schematic configuration of the in-vehicle network system 10a. HUB 200 in in-vehicle network system 10 shown in Embodiment 1 is connected to one CAN bus in control system network 1 . In contrast, as Figure 20 As shown, in the in-vehicle network system 10a, the HUB 200a obtained by partially deforming the HUB 200 is connected to two buses in the control system network 1a, that is, the bus 30a (CAN bus 1) and the bus 30b (CAN bus 2). Among the constituent elements of the in-vehicle network system 10a, the same constituent elements as the in-vehicle network system 10, in Figure 20 marked with figure 2 The same reference numerals are omitted here. In addition, the in-vehicle network system...

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PUM

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Abstract

An X-ECU (100) is provided with: a reception unit (110a) which sequentially receives frames from a CAN bus and stores the frames in a reception buffer (120a); a reception unit (110b) which sequentially receives frames from a second network and stores the frames in a reception buffer (120b); a generation unit (130) which refers to the data in each of the reception buffers and sequentially generatesa first kind of data which is data for the traveling control of a vehicle and a second kind of data which is data used in areas other than the traveling control of the vehicle, and stores each kind of data in respective transmission buffers (140a, 140b); and a transmission unit (150) which preferentially transmits prioritized data which is one of the kinds of data in the transmission buffers.

Description

technical field [0001] The present disclosure relates to a message processing technology for transceiving (transmission and reception) of messages in an in-vehicle network including a plurality of networks having different characteristics from each other. Background technique [0002] In recent years, many devices called electronic control units (ECU: Electronic Control Unit) are arranged in systems in automobiles. The network connecting these ECUs is called the in-vehicle network. Various standards exist for in-vehicle networking. As one of the most mainstream vehicle-mounted networks, there is a CAN (Controller Area Network) standard specified by ISO11898-1. In CAN, each ECU (node) connected to a bus (Bus) as a wired transmission path transmits and receives frames (messages). In addition, there is no identifier indicating the destination (receiver) and / or source in CAN, and the sending node adds an ID (CAN-ID) to each frame to send (that is, to send a signal to the bus)...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/46
CPCH04L12/40143H04L12/40H04L67/12H04L2012/40215H04L2012/40273H04L12/4625H04L12/46
Inventor 佐佐木崇光芳贺智之前田学松岛秀树
Owner PANASONIC INTELLECTUAL PROPERTY CORP OF AMERICA