WO2020255787A1 - Dispositif de commande et procédé de commande - Google Patents

Dispositif de commande et procédé de commande Download PDF

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Publication number
WO2020255787A1
WO2020255787A1 PCT/JP2020/022618 JP2020022618W WO2020255787A1 WO 2020255787 A1 WO2020255787 A1 WO 2020255787A1 JP 2020022618 W JP2020022618 W JP 2020022618W WO 2020255787 A1 WO2020255787 A1 WO 2020255787A1
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WO
WIPO (PCT)
Prior art keywords
unit
signal
control unit
mode
control device
Prior art date
Application number
PCT/JP2020/022618
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English (en)
Japanese (ja)
Inventor
慶 荒川
Original Assignee
日立オートモティブシステムズ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 日立オートモティブシステムズ株式会社 filed Critical 日立オートモティブシステムズ株式会社
Publication of WO2020255787A1 publication Critical patent/WO2020255787A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
    • B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
    • B60R16/023—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for transmission of signals between vehicle parts or subsystems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks

Definitions

  • the present invention relates to a control device and a control method.
  • the present invention has been made in view of the above problems, and an object of the present invention is to provide a control device and a control method capable of reliably performing a failure diagnosis of a communication interruption function.
  • the control device includes a control unit that controls communication with another control device, a monitoring unit that monitors the control unit, and an instruction from the control unit.
  • a transmitter that transmits a signal to another control device based on this, a receiver that receives a signal from another control device and sends a reception result to the control unit, and a transmitter and receiver based on instructions from the monitoring unit.
  • It has a transmission / reception unit having a mode control unit that switches between a normal mode in which all of the units are operated and a reception mode in which only the reception unit is operated, and the control unit is used when the mode control unit is switched to the reception mode.
  • the diagnostic signal of the mode control unit is sent to the transmission unit to be transmitted by the transmission unit, and the mode control unit is diagnosed based on whether or not the control unit has received the signal based on the diagnostic signal.
  • FIG. It is a schematic block diagram which shows the control apparatus of Example 1.
  • FIG. It is a time chart diagram explaining the operation of the control device of Example 1 in a normal state. It is a time chart diagram explaining the operation at the time of abnormality of the control device of Example 1.
  • FIG. It is a schematic block diagram which shows the control device at the time of diagnosis of Example 1.
  • FIG. It is a time chart diagram explaining the operation at the time of diagnosis of the control device of Example 1.
  • FIG. It is a time chart diagram explaining the operation at the time of diagnosis of the control device of Example 2.
  • FIG. 1 is a schematic configuration diagram showing a control device of the first embodiment.
  • control device 1 of this embodiment is mounted on an automobile (vehicle) and forms a network capable of communicating with other control devices via a CAN bus 13.
  • the control device 1 has a CAN driver (transmission / reception unit) 2, a CPU (control unit) 7, and a monitoring unit 11.
  • the CPU 7 has a transmitting unit (TX) 9 for transmitting the CAN message signal 8 and a receiving unit (RX) 10 for receiving the CAN message signal, and controls communication between the other control devices.
  • TX transmitting unit
  • RX receiving unit
  • the CAN driver 2 has a communication control unit 3, a transmission unit 4, a reception unit 5, and a mode control unit 6.
  • the communication control unit 3 causes the transmission unit 4 to transmit the CAN transmission signal 14 based on the CAN message signal 8 transmitted from the transmission unit (TX) 9 of the CPU 7.
  • the CAN transmission signal 14 transmitted from the transmission unit 4 is transmitted to another control device via the CAN bus 13, and is received by the reception unit (RX) 10 via the reception unit 5.
  • the receiving unit 5 receives the CAN receiving signal 15 transmitted from another control device connected to the CAN bus 13, and transmits the CAN message signal to the receiving unit (RX) 10 of the CPU 7.
  • the mode control unit 6 controls the transmission unit 4 and the reception unit 5, and operates the transmission unit 4 and the reception unit 5 to transmit and receive signals in a normal mode, and operates only the reception unit 5 to receive signals. It is possible to switch between the reception mode that operates only.
  • the monitoring unit 11 monitors the CPU 7 and controls the mode switching operation by the mode control unit 6 by the status signal.
  • the CAN communication cutoff circuit 12 is configured by the mode control unit 6 and the monitoring unit 11.
  • FIG. 2 is a time chart diagram illustrating the operation of the control device 1 of the first embodiment in a normal state.
  • 2- (a) is the transmission state of the CAN message signal 8 transmitted from the transmission unit (TX) 9, and 2- (b) is the mode state of the mode control unit 6, 2- ( c) indicates the transmission state of the transmission unit 4 in each state of 2- (b), and 2- (d) indicates the reception state of the reception unit (RX) 10.
  • the CAN communication cutoff circuit 12 is in the reception mode as shown in 2- (b), and the CAN transmission signal 14 is transmitted from the transmission unit 4 as shown in 2- (c).
  • the receiving unit 5 receives only the CAN reception signal 15 transmitted from the other control device. That is, when the CPU 7 is abnormal, only the CAN transmission signal 14 is stopped, and the abnormal CAN transmission signal 14 is not transmitted to the CAN bus 13.
  • FIG. 3 is a time chart diagram illustrating the operation of the control device 1 of the first embodiment at the time of abnormality.
  • 3- (a) is the transmission state of the CAN message signal 8 transmitted from the transmission unit (TX) 9
  • 3- (b) is the mode state of the mode control unit 6
  • 3- (c) is 3.
  • -(B) indicates the transmission state of the transmission unit 4 in each state
  • 3- (d) indicates the reception state of the reception unit (RX) 10.
  • the CAN message signal 8 transmitted from the transmission unit (TX) 9 is 3- (c). It is transmitted from the transmitting unit 4 as shown, and is received by the receiving unit 5 as shown in 3- (d). That is, the CAN message signal can be transmitted and received.
  • the CAN communication cutoff circuit 12 is not in the reception mode as shown in 3- (b), and the CAN transmission signal 14 is transmitted from the transmission unit 4 as shown in 3- (c). Is transmitted, and as shown in 3- (d), in the receiving unit 5, the CAN receiving signal 15 transmitted from another control device and the CAN transmitting signal 14 transmitted from the transmitting unit 4 are the receiving unit (RX). Received at.
  • the CAN transmission signal 14 which may be abnormal data may be transmitted to the CAN bus 13. Therefore, it is necessary to make a normal diagnosis of the CAN communication cutoff circuit 12 so as not to cause the above-mentioned event.
  • FIG. 4 is a schematic configuration diagram showing a control device 1 at the time of diagnosis according to the first embodiment.
  • the CPU 7 of the control device at the time of diagnosis transmits a diagnosis-only signal 16 having a diagnosis-only ID of the CAN communication cutoff circuit 12 in addition to the CAN message signal 8 from the transmission unit (TX) 9.
  • FIG. 5 is a time chart diagram illustrating the operation of the control device 1 of the first embodiment at the time of diagnosis.
  • 5- (a) is the driving state of the control device 1 at the time of key-on or key-off of the vehicle
  • 5- (b) is the CAN message signal 8 and the diagnostic ID transmitted from the transmission unit (TX) 9.
  • 5 (c) is the mode state of the mode control unit 6
  • 5- (d) is the transmission state of the transmission unit 4 in each state of 5- (c)
  • 5- (e). ) Indicates the reception state of the receiving unit (RX) 10.
  • control device 1 mounted on the vehicle performs a normal diagnosis of each function during the initial check period immediately after the key is turned on, and then enters the normal control state. During the initial check, communication with other control devices is generally not performed.
  • the mode state of 5- (c) is set as the reception mode during the initial check period, and the diagnosis-dedicated signal 16 is transmitted to the transmission unit (TX) as shown in 5- (b). ) Send from 9.
  • the CAN transmission signal 14 is not transmitted from the transmitting unit 4 during the receiving mode, and as shown in 5- (e), the receiving unit (RX) 10 passes through the receiving unit 5. None receive.
  • the CPU 7 determines that the CAN communication cutoff circuit 12 is normal in this state, and conversely, the diagnosis-only signal 16 is transmitted from the transmission unit 4, and the reception unit (RX) 10 transmits the diagnosis-only signal 16 via the reception unit 5. When it is received, it is determined that the CAN communication cutoff circuit 12 is abnormal.
  • the control device 1 is based on a CPU 7 that controls communication with another control device, a monitoring unit 11 that monitors the CPU 7, and an instruction from the CPU 7.
  • a transmission unit 4 that transmits a signal to another control device, a reception unit 5 that receives a signal from another control device and sends a reception result to the CPU 7, a transmission unit 4 and a transmission unit 4 based on an instruction from the monitoring unit 11.
  • the CPU 7 has a CAN driver 2 having a mode control unit 6 for switching between a normal mode in which any of the reception units 5 is operated and a reception mode in which only the reception unit is operated.
  • the mode control unit 6 is switched to the reception mode in the CPU 7.
  • the diagnosis-dedicated signal 16 of the mode control unit 6 is sent to the transmission unit 4 to be transmitted by the transmission unit 4, and the mode control is performed based on whether the CPU 7 has received the signal based on the diagnosis-only signal 16. Diagnose part 6.
  • a diagnosis-only signal 16 having a diagnosis-only ID is transmitted, but the operation to a plurality of control devices connected to the common CAN bus 13 is performed. If there is no effect, the diagnostic signal may be transmitted with the ID used in the normal control, and it goes without saying that the same effect can be obtained even in this case.
  • FIG. 6 is a time chart diagram illustrating the operation of the control device 1 of the second embodiment at the time of diagnosis.
  • 6- (a) is the driving state of the control device 1 at the time of key-on and key-off of the vehicle
  • 6- (b) is the CAN message signal 8 and the diagnosis-only ID transmitted from the transmission unit (TX) 9.
  • 6- (c) is the mode state of the mode control unit 6
  • 6- (d) is the transmission state of the transmission unit 4 in each state of 6- (c)
  • 6- (e). ) Indicates the reception state of the receiving unit (RX) 10.
  • control device 1 mounted on the vehicle is provided with a self-shut period at the time of key-off, and each functional state at the end of the driving cycle is an electronic component equipped with a memory such as a CPU 7. It is memorized in and prepared for the next driving cycle.
  • the mode state of 6- (c) is set as the reception mode during the self-shut period, and as shown in 6- (b), the diagnosis-dedicated signal 16 is transmitted to the transmission unit ( TX) 9 is transmitted.
  • the CAN message signal is not transmitted from the transmitting unit 4 during the receiving mode, and is received by the receiving unit (RX) 10 via the receiving unit 5 as shown in 6- (e). There is nothing to do.
  • the CPU 7 determines that the CAN communication cutoff circuit 12 is normal in this state, and conversely, the diagnosis-only signal 16 is transmitted from the transmission unit 4, and the reception unit (RX) 10 transmits the diagnosis-only signal 16 via the reception unit 5. When it is received, it is determined that the CAN communication cutoff circuit 12 is abnormal.
  • Example 1 The diagnostic procedure described in Example 1 will be described with reference to FIGS. 4 and 7 in an example in which the CAN bus 13 is not used.
  • FIG. 7 is a time chart diagram illustrating the operation of the control device 1 of the third embodiment at the time of diagnosis.
  • 7- (a) is the transmission state of the CAN message signal 8 transmitted from the transmission unit (TX) 9
  • 7- (b) is the mode state of the mode control unit 6
  • 7- (c) is 7.
  • -(B) indicates the transmission state of the transmission unit 4 in each state
  • 7- (d) indicates the reception state of the reception unit (RX) 10.
  • the CAN communication cutoff circuit 12 is diagnosed during the periodic transmission, that is, when the CAN bus 13 is not used.
  • a diagnosis period is provided when the CAN bus 13 is not used during normal control, and as shown in 7- (b), the mode control unit 6 is set to the reception mode during normal control. As shown in 7- (a), the diagnosis-only signal 16 is transmitted from the transmission unit (TX) 9.
  • the CAN transmission signal 14 is not transmitted from the transmitting unit 4 during the receiving mode, and as shown in 7- (d), the receiving unit (RX) 10 passes through the receiving unit 5. None receive.
  • the CPU 7 determines that the CAN communication cutoff circuit 12 is normal in this state, and conversely, the diagnostic signal 16 is transmitted from the transmitting unit 4, and the receiving unit (RX) 10 transmits the diagnostic dedicated signal 16 via the receiving unit 5.
  • the receiving unit (RX) 10 transmits the diagnostic dedicated signal 16 via the receiving unit 5.
  • the present invention is not limited to the above-mentioned examples, and includes various modifications.
  • the above-described embodiment has been described in detail in order to explain the present invention in an easy-to-understand manner, and is not necessarily limited to those having all the described configurations.
  • it is possible to replace a part of the configuration of one embodiment with the configuration of another embodiment and it is also possible to add the configuration of another embodiment to the configuration of one embodiment.
  • control lines and information lines indicate what is considered necessary for explanation, and not all control lines and information lines are necessarily shown on the product. In practice, it can be considered that almost all configurations are interconnected.
  • Control device 2 ... CAN driver (transmission / reception unit) 3 ... Communication control unit 4 ... Transmission unit 5 ... Reception unit 6 ... Mode control unit 7 ... CPU (control unit) 8 ... CAN message signal 9 ... Transmission unit (TX) 10 ... Reception unit (RX) 11 ... Monitoring unit 12 ... CAN communication cutoff circuit 13 ... CAN bus 14 ... CAN transmission signal 15 ... CAN reception signal 16 ... Diagnosis dedicated signal (diagnosis signal)

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mechanical Engineering (AREA)
  • Small-Scale Networks (AREA)

Abstract

L'invention permet d'effectuer avec fiabilité un diagnostic de défaillance d'une fonction de blocage de communication. Un dispositif de commande 1 comprend : une unité centrale (CPU) 7 qui commande la communication avec un autre dispositif de commande ; une unité de surveillance 11 qui surveille la CPU 7 ; et un pilote CAN 2 comportant une unité d'émission 4 qui émet un signal à destination de l'autre dispositif de commande sur la base d'une instruction provenant de la CPU 7, une unité de réception 5 qui reçoit un signal provenant de l'autre dispositif de commande et transmet le résultat de réception à la CPU 7, et une unité de commande de mode 6 qui bascule entre un mode normal pour faire fonctionner l'unité d'émission 4 ou l'unité de réception 5 sur la base de l'instruction provenant de l'unité de surveillance 11, et un mode réception pour faire fonctionner seulement l'unité de réception 5. Lorsque l'unité de commande de mode 6 bascule vers le mode réception, la CPU 7 envoie un signal dédié au diagnostic 16 de l'unité de commande de mode 6 à l'unité d'émission 4, émet un signal par l'unité d'émission 4, et effectue un diagnostic de l'unité de commande de mode 6 sur la base du fait que le signal basé sur le signal dédié au diagnostic 16 est reçu ou non par la CPU 7.
PCT/JP2020/022618 2019-06-18 2020-06-09 Dispositif de commande et procédé de commande WO2020255787A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019-112468 2019-06-18
JP2019112468A JP2022116376A (ja) 2019-06-18 2019-06-18 制御装置及び制御方法

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WO2020255787A1 true WO2020255787A1 (fr) 2020-12-24

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011189918A (ja) * 2010-03-17 2011-09-29 Hitachi Automotive Systems Ltd 車両用の制御装置
US20120158240A1 (en) * 2010-12-17 2012-06-21 GM Global Technology Operations LLC Controller area network message transmission disable testing systems and methods

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011189918A (ja) * 2010-03-17 2011-09-29 Hitachi Automotive Systems Ltd 車両用の制御装置
US20120158240A1 (en) * 2010-12-17 2012-06-21 GM Global Technology Operations LLC Controller area network message transmission disable testing systems and methods

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