KR101994159B1 - Device for distributing CAN signal and apparatus for simulating CAN communication with the same - Google Patents

Device for distributing CAN signal and apparatus for simulating CAN communication with the same Download PDF

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KR101994159B1
KR101994159B1 KR1020170143787A KR20170143787A KR101994159B1 KR 101994159 B1 KR101994159 B1 KR 101994159B1 KR 1020170143787 A KR1020170143787 A KR 1020170143787A KR 20170143787 A KR20170143787 A KR 20170143787A KR 101994159 B1 KR101994159 B1 KR 101994159B1
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South Korea
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plurality
transceivers
signal
connected
signals
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KR1020170143787A
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Korean (ko)
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KR20190048653A (en
Inventor
이동열
주성명
장민석
전태민
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주식회사 만도
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/28Data switching networks characterised by path configuration, e.g. local area networks [LAN], wide area networks [WAN]
    • H04L12/40Bus networks
    • H04L12/40052High-speed IEEE 1394 serial bus
    • H04L12/40091Bus bridging
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00Arrangements for maintenance or administration or management of packet switching networks
    • H04L41/14Arrangements for maintenance or administration or management of packet switching networks involving network analysis or design, e.g. simulation, network model or planning
    • H04L41/145Arrangements for maintenance or administration or management of packet switching networks involving network analysis or design, e.g. simulation, network model or planning involving simulating, designing, planning or modelling of a network
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00Arrangements for monitoring or testing packet switching networks
    • H04L43/50Testing arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/28Data switching networks characterised by path configuration, e.g. local area networks [LAN], wide area networks [WAN]
    • H04L12/40Bus networks
    • H04L2012/40208Bus networks characterized by the use of a particular bus standard
    • H04L2012/40215Controller Area Network CAN
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00Data switching networks
    • H04L12/28Data switching networks characterised by path configuration, e.g. local area networks [LAN], wide area networks [WAN]
    • H04L12/40Bus networks
    • H04L2012/40267Bus for use in transportation systems
    • H04L2012/40273Bus for use in transportation systems the transportation system being a vehicle

Abstract

A CAN signal distribution apparatus and a CAN communication simulation apparatus having the CAN signal distribution apparatus are provided. The CAN signal distribution apparatus according to the embodiment of the present invention includes an input unit including a plurality of first CAN transceivers connected in parallel to the CAN simulator through a main CAN bus; And a plurality of second CAN transceivers connected in a one-to-one relationship with the plurality of first CAN transceivers for outputting individual CAN signals, wherein the plurality of second CAN transceivers output respective CAN signals to a plurality of simulation target devices via a CAN bus And an output unit. Here, the input unit and the output unit are connected to make unidirectional communication so that the individual CAN signals are electrically separated among the plurality of simulation target devices.

Description

Technical Field [0001] The present invention relates to a CAN signal distributing apparatus and a CAN communication simulation apparatus having the CAN signal distributing apparatus.

More particularly, the present invention relates to a CAN signal distribution device capable of simulating a plurality of target devices by using a single CAN simulator by distributing CAN signals in a CAN communication simulation environment, and a CAN communication simulation device .

In recent years, automobile manufacturers are demanding an increase in the number of samples required for reliability testing in order to increase the reliability of vehicle electrical products. In addition, component suppliers supplying parts are also conducting various verification tests such as various harsh mode tests and improving field quality problems to assure a high level of component reliability.

In general, CAN (Controller Area Network) communication can not be connected to the same CAN bus at the same time because the network is configured in the form of a bus.

Therefore, in order to test a DUT (Device Under Test) by considering a CAN simulator as one vehicle, several simulators are required to communicate with each DUT at a 1: 1 CAN.

In this situation, the number of samples to be tested is increasing according to the test schedule or the request of the customer. Therefore, the number of simulators is increased and the cost for constructing the simulation environment is increasing.

KR 10-1449212 B

According to an aspect of the present invention, there is provided a CAN signal distribution apparatus capable of distributing one CAN signal to a plurality of CAN signals using one CAN simulator, and a CAN communication apparatus Simulation apparatus.

According to an aspect of the present invention, there is provided an apparatus comprising: an input unit including a plurality of first CAN transceivers connected in parallel to a CAN simulator through a main CAN bus; And a plurality of second CAN transceivers connected to the plurality of first CAN transceivers in a 1: 1 manner and outputting individual CAN signals, wherein the plurality of second CAN transceivers transmit individual CAN signals to a plurality of simulation target devices via a CAN bus Wherein the input unit and the output unit are connected to perform unidirectional communication so that the individual CAN signals are electrically separated between the plurality of simulation target devices.

In one embodiment, the transmitting end of the first CAN transceiver and the input end of the second CAN transceiver may be connected.

In one embodiment, the second CAN transceiver may be 1: 1 connected to the simulation target device.

According to another aspect of the present invention, there is provided a CAN simulator for providing a CAN signal for simulation of CAN communication for a plurality of simulation target devices; And a CAN signal distribution device for distributing the provided CAN signal to each of the plurality of simulation target devices.

The CAN signal distribution apparatus and the CAN communication simulation apparatus having the CAN signal distribution apparatus according to an embodiment of the present invention can distribute one CAN signal to a plurality of CAN signals so that a plurality of target apparatuses can be simulated by only one simulator, There is an effect that the cost for testing the device at the same time can be reduced.

Further, since the present invention distributes one CAN signal to a desired number of CAN signals by a unidirectional communication structure of a 1: 1 connected CAN transceiver, the number of target devices that can be simultaneously simulated can be easily increased, And can meet the needs of customers.

In addition, since the present invention easily distributes one CAN signal to a desired number of CAN signals, it is possible to test a large number of samples for specific environmental conditions, thereby improving the reliability of the product.

1 is a schematic configuration diagram of a CAN communication simulation apparatus provided in a CAN signal distribution apparatus according to an embodiment of the present invention,
2 is a detailed block diagram of a CAN signal distribution apparatus according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art to which the present invention pertains. The present invention may be embodied in many different forms and is not limited to the embodiments described herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and the same or similar components are denoted by the same reference numerals throughout the specification.

Hereinafter, a CAN communication simulation apparatus having a CAN signal distribution apparatus according to an embodiment of the present invention will be described in detail with reference to the drawings. 1 is a schematic block diagram of a CAN communication simulation apparatus provided in a CAN signal distribution apparatus according to an embodiment of the present invention.

Referring to FIG. 1, a CAN communication simulation apparatus according to an embodiment of the present invention includes a CAN simulator 10 and a CAN signal distribution apparatus 100.

In this CAN communication simulation apparatus, the CAN simulator 10 and the CAN signal distributing apparatus 100 are connected to each other via the CAN bus, and are connected to the simulation target apparatus 20 via a plurality of CAN buses.

Here, the simulation target device 20 may be a developed ECU test target device for performing the test. At this time, the test may be an environmental endurance test such as a low temperature test, a high temperature test and the like. The simulation target device 20 may include a plurality of DUTs 20-1 to 20-8.

For example, the DUTs 20-1 to 20-8 may include an ABS (Anti-Lock Braking System) ECU, an EPS (Electric Power Steering) ECU, or a SPAS (Smart Parking Assistant System) But may include an ECU provided in the vehicle.

At this time, a desired test can be performed on a plurality of DUTs 20-1 to 20-8 by connecting the testers suitable for environmental test use to the electrically independent DUTs 20-1 to 20-8.

The CAN simulator 10 performs a CAN communication simulation for a plurality of DUTs 20-1 to 20-8, which are the simulation target device 20, and provides a CAN signal for the simulation. Here, the CAN signal is a simulation value (Vehicle Dynamic Data), which is the CAN communication value supplied from the vehicle.

That is, the ECU in the vehicle is connected to the CAN communication to receive the vehicle information such as the vehicle speed and the engine condition. The CAN simulator 10 provides the CAN communication value supplied from the vehicle as a simulation value for testing the ECU.

At this time, as described above, in order to simulate a plurality of DUTs 20-1 to 20-8 due to the characteristics of CAN communication, it is necessary to have as many CAN simulators as the number of DUTs for 1: 1 communication with the DUTs. The entire CAN simulator 10 can be reduced by eliminating redundant portions of the CAN simulators.

The CAN simulator 10 may be a general purpose simulator. Here, although the general-purpose simulator is very expensive, the CAN communication simulator apparatus according to the embodiment of the present invention can guarantee stable simulation while reducing the overall cost by using only one CAN simulator 10. For example, the general purpose simulator may be CANoe provided by Vector.

As another example, the CAN simulator 10 may be manufactured at a low cost with a minimum function for CAN communication simulation. The CAN simulator 10 may include a microcontroller (MCU) 12 and a CAN transceiver 14, as shown in FIG. 2 to be described later.

The MCU 12 can provide CAN signals to the DUTs 20-1 to 20-8 to simulate CAN communication.

The CAN transceiver 14 can output the CAN signal input from the MCU 12 to the CAN bus. Here, the CAN bus is composed of a twisted wire, and the CAN transceiver 14 can output a double signal including a high signal and a low signal inverted to each other via a CAN bus.

The CAN signal distribution device 100 distributes the CAN signal provided from the CAN simulator 10 to each of the plurality of DUTs 20-1 to 20-8. Here, the CAN signal distribution device 100 can distribute one CAN signal provided from the CAN simulator 10 to a plurality of electrically separated CAN signals.

At this time, the CAN signal distribution device 100 can be connected to each of the plurality of DUTs 20-1 to 20-8 through a plurality of local CAN buses in a one-to-one relationship. That is, the CAN signal distribution device 100 can distribute CAN signals for 1: N connection between the CAN simulator 10 and the DUTs 20-1 to 20-8.

Hereinafter, the CAN signal distribution device 100 will be described in more detail with reference to FIG. 2 is a detailed block diagram of a CAN signal distribution apparatus according to an embodiment of the present invention.

Hereinafter, the CAN signal distribution device 100 will be described in more detail with reference to FIGS. 2 and 3. FIG. 2 is a detailed block diagram of a CAN signal distribution apparatus according to an embodiment of the present invention.

The CAN signal distribution apparatus 100 may include input units 121 to 128 and output units 121 to 128.

The input units 111 to 118 can receive the CAN signal from the CAN simulator 10 via the main CAN bus. Here, the input units 111 to 118 are for converting the CAN signal received from the CAN bus, and may be a CAN transceiver. That is, the input units 111 to 118 may include a plurality of first CAN transceivers 111 to 118.

The first CAN transceivers 111 to 118 may be connected to the CAN simulator 10 through a main CAN bus formed by a twisted pair. Here, the first CAN transceivers 111 to 118 may be provided in a plurality according to the number for distributing CAN signals of the CAN simulator 10.

At this time, since the main CAN bus includes the high signal and the low signal, the high signal and the low signal can be respectively connected to the high signal terminal (HIGH) and the low signal terminal (LOW) of the first CAN transceivers 111 to 118.

Here, the plurality of first CAN transceivers 111 to 118 may be connected in parallel to the CAN simulator 10. [

In addition, the plurality of first CAN transceivers 111 to 118 may be connected in a one-to-one relationship with the second CAN transceivers 121 to 128, which will be described later. Here, the transmitting end Tx of the first CAN transceivers 111 to 118 may be connected to the receiving end Rx of the second CAN transceivers 121 to 128, and the receiving end Rx may be kept open.

Accordingly, each of the plurality of first CAN transceivers 111 to 118 and the plurality of second CAN transceivers 121 to 128 can perform unidirectional communication only. Therefore, since the plurality of DUTs 20-1 to 20-8 connected to the CAN signal distributor 100 can not transmit their own ID information to the CAN simulator 10, The DUTs 20-1 to 20-8 are not recognized by the same ID.

Therefore, the plurality of DUTs 20-1 to 20-8 can be connected to one CAN simulator 10 via the CAN signal distributor 100 to receive the CAN signal. As a result, the CAN signal distribution device 100 can separate the CAN signal provided from the CAN simulator 10 into a plurality of CAN signals and output it to the plurality of DUTs 20-1 to 20-8.

As described above, the input units 111 to 118 and the output units 121 to 128 are connected to perform unidirectional communication, so that the CAN signals can be distributed without colliding with each other among the plurality of DUTs 20-1 to 20-8.

Therefore, although the main CAN bus is connected in parallel to the plurality of first CAN transceivers 111 to 118, since only one-way communication between the first CAN transceivers 111 to 118 and the second CAN transceivers 121 to 128 is possible, the first CAN transceiver 111 to 118 can output an electrically separated signal.

The CAN signal distribution apparatus 100 according to the present invention is configured such that the plurality of first CAN transceivers 111 to 118 are connected in parallel to the main CAN bus and the first CAN transceivers 111 to 118 and the second CAN transceivers 121 to 128 ) So that the CAN signal provided by the CAN simulator 10 can be separated into a plurality of CAN signals.

The output units 121 to 128 output the plurality of CAN signals transmitted from the input units 111 to 118 to the DUTs 20-1 to 20-8 as the simulation target device 20 via the local CAN buses # 8 < / RTI > Here, the output units 121 to 128 are CAN transceivers for converting the CAN signals to output to the local CAN buses # 1 to # 8. That is, the output units 121 to 128 may include a plurality of second CAN transceivers 121 to 128.

The second CAN transceivers 121 to 128 may be connected in a 1: 1 relationship with the first CAN transceivers 111 to 118. Here, the receiving end Rx of the second CAN transceivers 121 to 128 is connected to the transmitting end Tx of the first CAN transceiver 111 to 118, and the transmitting end Tx can be kept open.

Thus, the plurality of second CAN transceivers 121 to 128 can be connected to the plurality of first CAN transceivers 111 to 118 in a one-to-one manner, and can output individual CAN signals.

In addition, the plurality of second CAN transceivers 121 to 128 may be connected to the plurality of DUTs 20-1 to 20-8, respectively, through the local CAN buses # 1 to # 8 formed by the twisted pair. That is, the second CAN transceivers 121 to 128 can be connected in a one-to-one manner through the plurality of DUTs 20-1 to 20-8 and the local CAN buses # 1 to # 8.

The output units 121 to 128 output the individual CAN signals separated from the one CAN signal provided from the CAN simulator 10 to the plurality of simulation target devices 20 via the local CAN buses # can do.

At this time, when the individual CAN signals separated by the unidirectional communication with the first CAN transceivers 111 to 118 are eight as shown in Fig. 2, the second CAN transceivers 121 to 128 transmit the separated CAN signals to the local CAN bus And 8 outputs for output through # 1 to # 8. However, the number of the second CAN transceivers 121 to 128 is not limited to this, and may include as many CAN transceivers as the number of CAN signals separated by one-way communication with the first CAN transceivers 111 to 118.

Thereby, the plurality of DUTs 20-1 to 20-8 can be simulated by receiving the CAN signal from one CAN simulator 10. At this time, the test for each DUT 20-1 to 20-8 can be performed by connecting the tester for each test use to each of the local CAN buses # 1 to # 8.

With this configuration, the CAN signal distribution device 100 according to the embodiment of the present invention can simulate a plurality of target devices by using only one simulator by distributing one CAN signal to a plurality of CAN signals, There is an effect that the cost for testing the device at the same time can be reduced.

In addition, the CAN signal distribution device 100 according to the embodiment of the present invention distributes one CAN signal to a desired number of CAN signals by a unidirectional communication structure of a 1: 1 connected CAN transceiver, It is possible to shorten the verification schedule and meet the needs of the customers.

In addition, the CAN signal distribution device 100 according to the embodiment of the present invention easily tests a large number of samples for a specific environmental condition by easily distributing one CAN signal to a desired number of CAN signals, Can be improved.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

10: CAN simulator 20: Simulation target device
20-1 to 20-8: DUT 100: CAN signal distributing device
111 to 118: first CAN transceiver 121 to 128: second CAN transceiver

Claims (4)

  1. An input unit including a plurality of first CAN transceivers each connected in parallel to the CAN simulator via a main CAN bus to receive a CAN signal; And
    And a plurality of second CAN transceivers connected to the plurality of first CAN transceivers in a one-to-one manner to output respective CAN signals, wherein the plurality of second CAN transceivers transmit individual CAN signals to a plurality of simulation target devices via a CAN bus Respectively;
    Lt; / RTI >
    Wherein the input unit and the output unit are connected to perform unidirectional communication so that the individual CAN signals are electrically separated between the plurality of simulation target devices,
    Wherein a transmitting end of each of the plurality of first CAN transceivers is connected to an input end of each of the plurality of second CAN transceivers and a receiving end of each of the plurality of first CAN transceivers is kept open.
  2. delete
  3. The method according to claim 1,
    Wherein the second CAN transceiver is 1: 1 connected to the simulation target device.
  4. A CAN simulator for providing a CAN signal for simulation of CAN communication for a plurality of simulation target devices; And
    A CAN signal distributor according to any one of claims 1 and 3 for distributing the provided CAN signal to each of the plurality of simulation target devices;
    The CAN communication simulation device comprising:
KR1020170143787A 2017-10-31 2017-10-31 Device for distributing CAN signal and apparatus for simulating CAN communication with the same KR101994159B1 (en)

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030002681A1 (en) * 1996-02-22 2003-01-02 Lars-Berno Fredriksson Device in a system operating with CAN-protocol and in a control and/or supervision system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101230902B1 (en) * 2010-12-02 2013-02-07 현대자동차주식회사 System for evaluating electronic parts using vehicle simulator
KR101449212B1 (en) 2012-12-28 2014-10-08 현대자동차주식회사 Apparatus and method for modeling controller of CAN bus simulator

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030002681A1 (en) * 1996-02-22 2003-01-02 Lars-Berno Fredriksson Device in a system operating with CAN-protocol and in a control and/or supervision system

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