WO2020255787A1 - Control device and control method - Google Patents

Control device and control method 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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unit
signal
control unit
mode
control device
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PCT/JP2020/022618
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French (fr)
Japanese (ja)
Inventor
慶 荒川
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日立オートモティブシステムズ株式会社
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Publication of WO2020255787A1 publication Critical patent/WO2020255787A1/en

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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)

Abstract

Failure diagnosis of a communication blocking function can be reliably performed. A control device 1 has: a CPU 7 that controls communication with another control device; a monitoring unit 11 that monitors the CPU 7; and a CAN driver 2 having a transmission unit 4 that transmits a signal to the other control device on the basis of an instruction from the CPU 7, a reception unit 5 that receives a signal from the other control device and transmits the reception result to the CPU 7, and a mode control unit 6 that switches between a normal mode for operating the transmission unit 4 or the reception unit 5 on the basis of the instruction from the monitoring unit 11, and a reception mode for operating only the reception unit 5. When the mode control unit 6 is switched to the reception mode, the CPU 7 sends a diagnosis dedicated signal 16 of the mode control unit 6 to the transmission unit 4, transmits a signal from the transmission unit 4, and performs a diagnosis of the mode control unit 6 on the basis of whether the signal based on the diagnosis dedicated signal 16 is received by the CPU7.

Description

制御装置及び制御方法Control device and control method
　本発明は、制御装置及び制御方法に関する。 The present invention relates to a control device and a control method.
　近年、例えば車両に搭載され、同様に車両に搭載された他の制御装置との間でＣＡＮ（Controller Area Network）による通信を行う制御装置において、自動車向けの国際的な機能安全規格であるＩＳＯ２６２６２に規定された多重安全の要求より、制御内に独立したＣＡＮの送信信号を遮断する手段を講じることが求められている。この要求に対し、一つのＣＡＮバスに対し複数のＣＡＮコントローラを備えた制御装置が知られている（例えば、特許文献１参照）。 In recent years, for example, in a control device mounted on a vehicle and communicating with another control device mounted on the vehicle by CAN (Controller Area Network), ISO 26262, which is an international functional safety standard for automobiles, has been adopted. Due to the specified multiple safety requirements, it is required to take measures to block the transmission signal of the independent CAN within the control. In response to this request, a control device including a plurality of CAN controllers for one CAN bus is known (see, for example, Patent Document 1).
　特許文献１に開示された技術では、何れかのコントローラが送受信可能な通常モードで動作している間は、他のコントローラは受信のみ可能な受信モードで動作し、受信モードへの切り替えは監視素子によりＣＡＮ通信遮断することを特徴としている。 In the technique disclosed in Patent Document 1, while one of the controllers is operating in the normal mode in which transmission / reception is possible, the other controller operates in the reception mode in which reception is possible only, and switching to the reception mode is a monitoring element. It is characterized by blocking CAN communication.
特開２０１７―９５０５０号公報JP-A-2017-95050
　しかし、上述した特許文献１に開示された制御装置において、ＣＡＮ通信遮断機能を満たすためにはＣＡＮ通信遮断部が常に正常に動作することを確実に確認しなければならない。 However, in the control device disclosed in Patent Document 1 described above, in order to satisfy the CAN communication blocking function, it is necessary to surely confirm that the CAN communication blocking unit always operates normally.
　本発明は上記の課題に鑑みてなされたもので、通信遮断機能の故障診断を確実に行うことが可能な制御装置及び制御方法を提供することにある。 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.
　上記課題を解決すべく、本発明の一つの観点に従う制御装置は、他の制御装置との間での通信を制御する制御部と、制御部を監視する監視部と、制御部からの指示に基づいて信号を他の制御装置に送信する送信部、他の制御装置からの信号を受信して制御部に受信結果を送出する受信部、及び、監視部からの指示に基づいて送信部及び受信部のいずれも動作させる通常モードと受信部のみを動作させる受信モードとを切り替えるモード制御部を有する送受信部とを有し、制御部は、モード制御部が受信モードに切り替えられているときに、モード制御部の診断用信号を送信部に送出して送信部により信号を送信させ、診断用信号に基づく信号を制御部が受信したか否かに基づいてモード制御部の診断を行う。 In order to solve the above problems, the control device according to one aspect of the present invention 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.
　本発明によれば、通信遮断機能の故障診断を確実に行うことが可能な制御装置及び制御方法を実現することができる。 According to the present invention, it is possible to realize a control device and a control method capable of reliably performing a failure diagnosis of a communication cutoff function.
実施例１の制御装置を示す概略構成図である。It is a schematic block diagram which shows the control apparatus of Example 1. FIG. 実施例１の制御装置の正常時における動作を説明するタイムチャート図である。It is a time chart diagram explaining the operation of the control device of Example 1 in a normal state. 実施例１の制御装置の異常時における動作を説明するタイムチャート図である。It is a time chart diagram explaining the operation at the time of abnormality of the control device of Example 1. FIG. 実施例１の診断時の制御装置を示す概略構成図である。It is a schematic block diagram which shows the control device at the time of diagnosis of Example 1. FIG. 実施例１の制御装置の診断時における動作を説明するタイムチャート図である。It is a time chart diagram explaining the operation at the time of diagnosis of the control device of Example 1. FIG. 実施例２の制御装置の診断時における動作を説明するタイムチャート図である。It is a time chart diagram explaining the operation at the time of diagnosis of the control device of Example 2. 実施例３の制御装置の診断時における動作を説明するタイムチャート図である。It is a time chart diagram explaining the operation at the time of diagnosis of the control device of Example 3.
　以下、本発明の実施形態について、図面を参照して説明する。なお、以下に説明する実施形態は特許請求の範囲に係る発明を限定するものではなく、また実施形態の中で説明されている諸要素及びその組み合わせの全てが発明の解決手段に必須であるとは限らない。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. It should be noted that the embodiments described below do not limit the invention according to the claims, and all of the elements and combinations thereof described in the embodiments are indispensable for the means for solving the invention. Is not always.
　図１は、実施例１の制御装置を示す概略構成図である。 FIG. 1 is a schematic configuration diagram showing a control device of the first embodiment.
　図１において、本実施例の制御装置１は自動車（車両）に搭載され、ＣＡＮバス１３を介して他の制御装置と互いに通信可能なネットワークを形成している。制御装置１は、ＣＡＮドライバ（送受信部）２、ＣＰＵ（制御部）７及び監視部１１を有する。 In FIG. 1, the 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.
　ＣＰＵ７は、ＣＡＮメッセージ信号８を送信する送信部（ＴＸ）９と、ＣＡＮメッセージ信号を受信する受信部（ＲＸ）１０を有し、他の制御装置との間での通信制御を行う。 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.
　ＣＡＮドライバ２は、通信制御部３、送信部４、受信部５及びモード制御部６を有する。 The CAN driver 2 has a communication control unit 3, a transmission unit 4, a reception unit 5, and a mode control unit 6.
　通信制御部３は、ＣＰＵ７の送信部（ＴＸ）９から送信されたＣＡＮメッセージ信号８に基づいて、送信部４にＣＡＮ送信信号１４を送信させる。送信部４から送信されたＣＡＮ送信信号１４は、ＣＡＮバス１３を介して他の制御装置へ送信されるとともに、受信部５を介して受信部（ＲＸ）１０により受信される。また、受信部５は、ＣＡＮバス１３に接続されている他の制御装置から送信されたＣＡＮ受信信号１５を受信し、ＣＡＮメッセージ信号をＣＰＵ７の受信部（ＲＸ）１０に送出する。 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. Further, 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.
　モード制御部６は、送信部４および受信部５をコントロールし、これら送信部４及び受信部５を動作させて信号を送受信可能に動作する通常モードと、受信部５のみ動作させて信号の受信のみを可能に動作する受信モードとを切り替え可能としている。 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.
　監視部１１は、ＣＰＵ７を監視するとともに、ステータス信号によってモード制御部６によるモード切替動作を制御する。これらモード制御部６及び監視部１１によりＣＡＮ通信遮断回路１２が構成されている。 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.
　次に、上述したように構成された本実施例の制御装置１のＣＡＮ通信遮断回路１２正常時における動作について、図1および図２を参照して説明する。 Next, the operation of the control device 1 of the present embodiment configured as described above when the CAN communication cutoff circuit 12 is normal will be described with reference to FIGS. 1 and 2.
　図２は、実施例１の制御装置１の正常時における動作を説明するタイムチャート図である。 FIG. 2 is a time chart diagram illustrating the operation of the control device 1 of the first embodiment in a normal state.
　より詳細には、図２において、２－（ａ）は送信部（ＴＸ）９から送信されたＣＡＮメッセージ信号８の送信状態、２－（ｂ）はモード制御部６のモード状態、２－（ｃ）は２－（ｂ）の各状態における送信部４の送信状態、２－（ｄ）は受信部（ＲＸ）１０の受信状態を示す。 More specifically, in FIG. 2, 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.
　ＣＰＵ７の正常動作時は２－（ｂ）は通常モードとなっており、２－（ａ）に示すように送信部（ＴＸ）９から送信されたＣＡＮメッセージ信号８は、２－（ｃ）に示すように送信部４から送信され、２－（ｄ）に示すように受信部５により受信されている。つまり、ＣＡＮメッセージの送受信が可能な状態となっている。 During normal operation of the CPU 7, 2- (b) is in the normal mode, and as shown in 2- (a), the CAN message signal 8 transmitted from the transmission unit (TX) 9 is set to 2- (c). It is transmitted from the transmitting unit 4 as shown, and is received by the receiving unit 5 as shown in 2- (d). That is, the CAN message can be transmitted and received.
　一方、ＣＰＵ７の異常動作時は、２－（ｂ）に示すようにＣＡＮ通信遮断回路１２により受信モードとなっており、２－（ｃ）で示すように送信部４からＣＡＮ送信信号１４は送信されないが、２－（ｄ）に示すように、受信部５では、他の制御装置から送信されたＣＡＮ受信信号１５のみが受信される。すなわち、ＣＰＵ７異常時においてはＣＡＮ送信信号１４の送信のみが停止され、異常なＣＡＮ送信信号１４がＣＡＮバス１３へは送信されない。 On the other hand, when the CPU 7 operates abnormally, 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). However, as shown in 2- (d), 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.
　次に、ＣＡＮ通信遮断回路１２の異常時における動作について、図1および図３を参照して説明する。 Next, the operation of the CAN communication cutoff circuit 12 at the time of abnormality will be described with reference to FIGS. 1 and 3.
　図３は、実施例１の制御装置１の異常時における動作を説明するタイムチャート図である。 FIG. 3 is a time chart diagram illustrating the operation of the control device 1 of the first embodiment at the time of abnormality.
　より詳細には、３－（ａ）は送信部（ＴＸ）９から送信されたＣＡＮメッセージ信号８の送信状態、３－（ｂ）はモード制御部６のモード状態、３－（ｃ）は３－（ｂ）の各状態における送信部４の送信状態、３－（ｄ）は受信部（ＲＸ）１０の受信状態を示す。 More specifically, 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, and 3- (c) is 3. -(B) indicates the transmission state of the transmission unit 4 in each state, and 3- (d) indicates the reception state of the reception unit (RX) 10.
　ＣＰＵ７の正常動作時は３－（ｂ）は通常モードとなっており、３－（ａ）に示すように送信部（ＴＸ）９から送信されたＣＡＮメッセージ信号８は、３－（ｃ）で示すように送信部４から送信され、３－（ｄ）に示すように受信部５により受信されている。つまり、ＣＡＮメッセージ信号の送受信が可能な状態となっている。 During normal operation of the CPU 7, 3- (b) is in the normal mode, and as shown in 3- (a), 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.
　一方、ＣＰＵ７の異常動作時は、３－（ｂ）に示すようにＣＡＮ通信遮断回路１２により受信モードとはなっておらず、３－（ｃ）に示すように送信部４からＣＡＮ送信信号１４は送信され、３－（ｄ）に示すように、受信部５では、他の制御装置から送信されたＣＡＮ受信信号１５と送信部４から送信されたＣＡＮ送信信号１４が前記受信部（ＲＸ）にて受信される。 On the other hand, when the CPU 7 operates abnormally, 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.
　すなわち、ＣＰＵ７異常時において、異常データである可能性のあるＣＡＮ送信信号１４がＣＡＮバス１３へは送信されてしまう可能性がある。従って、上述した事象とならないように、ＣＡＮ通信遮断回路１２の正常診断が必要となる。 That is, when the CPU 7 is abnormal, 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.
　本実施例である制御装置１によるＣＡＮ通信遮断回路１２の診断手順について、特にキーオン直後の診断方法について、図４及び図５に基づいて説明する。 The diagnostic procedure of the CAN communication cutoff circuit 12 by the control device 1 of this embodiment, particularly the diagnostic method immediately after the key-on, will be described with reference to FIGS. 4 and 5.
　図４は、実施例１の診断時の制御装置１を示す概略構成図である。 FIG. 4 is a schematic configuration diagram showing a control device 1 at the time of diagnosis according to the first embodiment.
　図４に示すように、診断時における制御装置のＣＰＵ７は、送信部（ＴＸ）９からＣＡＮメッセージ信号８以外にＣＡＮ通信遮断回路１２の診断専用ＩＤをもつ診断専用信号１６を送信する。 As shown in FIG. 4, 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.
　図５は、実施例１の制御装置１の診断時における動作を説明するタイムチャート図である。 FIG. 5 is a time chart diagram illustrating the operation of the control device 1 of the first embodiment at the time of diagnosis.
　より詳細には、５－（ａ）は車両のキーオン時またはキーオフ時の制御装置１の駆動状態、５－（ｂ）は送信部（ＴＸ）９から送信されたＣＡＮメッセージ信号８および診断専用ＩＤをもつ診断専用信号１６の送信状態、５－（ｃ）はモード制御部６のモード状態、５－（ｄ）は５－（ｃ）の各状態における送信部４の送信状態、５－（ｅ）は受信部（ＲＸ）１０の受信状態を示す。 More specifically, 5- (a) is the driving state of the control device 1 at the time of key-on or key-off of the vehicle, and 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.
　一般的に、５－（ａ）に示すように、車両に搭載される制御装置１は、キーオン直後のイニシャルチェック期間において各機能の正常診断を行っており、その後、通常制御状態となる。イニシャルチェック中は他の制御装置とそれぞれ通信は行われないのが一般的である。 Generally, as shown in 5- (a), the 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.
　本実施例では、５－（ｃ）に示すように、イニシャルチェック期間に５－（ｃ）のモード状態を受信モードとし、５－（ｂ）に示すように診断専用信号１６を送信部（ＴＸ）９から送信する。５－（ｄ）に示すように、受信モード中は送信部４からＣＡＮ送信信号１４は送信されず、５－（ｅ）に示すように、受信部５を介して受信部（ＲＸ）１０が受信することはない。 In this embodiment, as shown in 5- (c), 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. As shown in 5- (d), 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. Never receive.
　ＣＰＵ７は、この状態をＣＡＮ通信遮断回路１２が正常であると判定し、それとは逆に、送信部４から診断専用信号１６が送信されて、受信部５を介して受信部（ＲＸ）１０が受信した場合はＣＡＮ通信遮断回路１２が異常であると判定する。 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.
　このように構成される本実施例によれば、制御装置１は、他の制御装置との間での通信を制御するＣＰＵ７と、ＣＰＵ７を監視する監視部１１と、ＣＰＵ７からの指示に基づいて信号を他の制御装置に送信する送信部４、他の制御装置からの信号を受信してＣＰＵ７に受信結果を送出する受信部５、及び、監視部１１からの指示に基づいて送信部４及び受信部５のいずれも動作させる通常モードと受信部のみを動作させる受信モードとを切り替えるモード制御部６を有するＣＡＮドライバ２とを有し、ＣＰＵ７は、モード制御部６が受信モードに切り替えられているときに、モード制御部６の診断専用信号１６を送信部４に送出して送信部４により信号を送信させ、診断専用信号１６に基づく信号をＣＰＵ７が受信したか否かに基づいてモード制御部６の診断を行う。 According to the present embodiment configured as described above, 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. At that time, 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.
　従って、本実施例によれば、通信遮断機能の故障診断を確実に行うことが可能となる。 Therefore, according to this embodiment, it is possible to reliably perform a failure diagnosis of the communication blocking function.
　より詳細には、本実施例によれば、従来では検出できなかったＣＡＮ通信遮断回路１２の故障診断をドライビングサイクル毎に実施することが可能となり、ＣＡＮ通信遮断が必要な時に確実に動作させることが可能となる。 More specifically, according to the present embodiment, it is possible to perform a failure diagnosis of the CAN communication cutoff circuit 12 which could not be detected in the past for each driving cycle, and to ensure the operation when CAN communication cutoff is required. Is possible.
　尚、本実施例では、ＣＡＮ通信遮断回路１２を診断するため、診断専用ＩＤを有する診断専用信号１６を送信する構成としたが、共通のＣＡＮバス１３に接続される複数の制御装置への動作影響がないのであれば、通常制御で使用しいているＩＤにて診断専用信号を送信してもよく、この場合であっても同じ効果が得ることができることは言うまでもない。 In this embodiment, in order to diagnose the CAN communication cutoff circuit 12, 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.
　実施例１で説明した診断手順を、キーオフ時のセルフシャット期間に実施する実施例を図４および図６に基づき説明する。 An embodiment in which the diagnostic procedure described in Example 1 is carried out during the self-shut period at the time of key-off will be described with reference to FIGS. 4 and 6.
　図６は、実施例２の制御装置１の診断時における動作を説明するタイムチャート図である。 FIG. 6 is a time chart diagram illustrating the operation of the control device 1 of the second embodiment at the time of diagnosis.
　より詳細には、６－（ａ）は車両のキーオン時およびキーオフ時の制御装置１の駆動状態、６－（ｂ）は送信部（ＴＸ）９から送信されたＣＡＮメッセージ信号８および診断専用ＩＤをもつ診断専用信号１６の送信状態、６－（ｃ）はモード制御部６のモード状態、６－（ｄ）は６－（ｃ）の各状態における送信部４の送信状態、６－（ｅ）は受信部（ＲＸ）１０の受信状態を示す。 More specifically, 6- (a) is the driving state of the control device 1 at the time of key-on and key-off of the vehicle, and 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.
　一般的に、６－（ａ）に示すように、車両に搭載される制御装置１は、キーオフ時にセルフシャット期間を設け、ドライビングサイクル終了時の各機能状態をＣＰＵ７等のメモリを実装した電子部品へ記憶させ、次のドライビングサイクル時に備えている。 Generally, as shown in 6- (a), the 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.
　本実施例では、６－（ｃ）に示すように、セルフシャット期間に６－（ｃ）のモード状態を受信モードとし、６－（ｂ）に示すように診断専用信号１６を前記送信部（ＴＸ）９から送信する。 In this embodiment, as shown in 6- (c), 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.
　６－（ｄ）に示すように、受信モード中は送信部４からＣＡＮメッセージ信号は送信されず、６－（ｅ）に示すように、受信部５を介して受信部（ＲＸ）１０へ受信することはない。 As shown in 6- (d), 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.
　ＣＰＵ７は、この状態をＣＡＮ通信遮断回路１２が正常であると判定し、それとは逆に、送信部４から診断専用信号１６が送信されて、受信部５を介して受信部（ＲＸ）１０が受信した場合はＣＡＮ通信遮断回路１２が異常であると判定する。 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.
　従って、本実施例によっても、上述した実施例１と同様の効果を得ることができる。 Therefore, the same effect as that of Example 1 described above can be obtained by this example as well.
　なお、本実施例では、セルフシャット期間、すなわちキーオフ時に本診断を実施するため、実施例１と同様に共通のＣＡＮバス１３に接続される複数の制御装置への動作影響がなく、ＣＡＮ通信遮断回路１２の診断が可能となる。 In this embodiment, since this diagnosis is performed during the self-shut period, that is, at the time of key-off, there is no operational influence on a plurality of control devices connected to the common CAN bus 13 as in the first embodiment, and CAN communication is cut off. The circuit 12 can be diagnosed.
　実施例１で説明した診断手順を、ＣＡＮバス１３未使用時に実施する実施例を図４および図７に基づき説明する。 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.
　図７は、実施例３の制御装置１の診断時における動作を説明するタイムチャート図である。 FIG. 7 is a time chart diagram illustrating the operation of the control device 1 of the third embodiment at the time of diagnosis.
　より詳細には、７－（ａ）は送信部（ＴＸ）９から送信されたＣＡＮメッセージ信号８の送信状態、７－（ｂ）はモード制御部６のモード状態、７－（ｃ）は７－（ｂ）の各状態における送信部４の送信状態、７－（ｄ）は受信部（ＲＸ）１０の受信状態を示す。 More specifically, 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, and 7- (c) is 7. -(B) indicates the transmission state of the transmission unit 4 in each state, and 7- (d) indicates the reception state of the reception unit (RX) 10.
　本実施例では、周期送信による通信を主とするＣＡＮバス１３において、周期送信の間、すなわちＣＡＮバス１３未使用時にＣＡＮ通信遮断回路１２の診断を実施する。 In this embodiment, in the CAN bus 13 mainly for communication by periodic transmission, the CAN communication cutoff circuit 12 is diagnosed during the periodic transmission, that is, when the CAN bus 13 is not used.
　７－（ａ）に示すように、通常制御の間のＣＡＮバス１３未使用時に診断期間を設け、７－（ｂ）に示すように、通常制御の間にモード制御部６を受信モードとし、７－（ａ）に示すように診断専用信号１６を送信部（ＴＸ）９から送信する。 As shown in 7- (a), 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.
　７－（ｃ）に示すように、受信モード中は送信部４からＣＡＮ送信信号１４は送信されず、７－（ｄ）に示すように、受信部５を介して受信部（ＲＸ）１０が受信することはない。 As shown in 7- (c), 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. Never receive.
　ＣＰＵ７は、この状態をＣＡＮ通信遮断回路１２が正常であると判定し、それとは逆に、送信部４から診断専用信号１６が送信されて、受信部５を介して受信部（ＲＸ）１０が受信した場合はＣＡＮ通信遮断回路１２が異常であると判定する。
　従って、本実施例によっても、上述した実施例１と同様の効果を得ることができる。 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. When it is received, it is determined that the CAN communication cutoff circuit 12 is abnormal.
Therefore, the same effect as that of Example 1 described above can be obtained by this example as well.
　なお、本発明は上記した実施例に限定されるものではなく、様々な変形例が含まれる。
例えば、上記した実施例は本発明を分かりやすく説明するために詳細に説明したものであり、必ずしも説明した全ての構成を備えるものに限定されるものではない。また、ある実施例の構成の一部を他の実施例の構成に置き換えることが可能であり、また、ある実施例の構成に他の実施例の構成を加えることも可能である。また、各実施例の構成の一部について、他の構成の追加・削除・置換をすることが可能である。 The present invention is not limited to the above-mentioned examples, and includes various modifications.
For example, 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. Further, 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. Further, it is possible to add / delete / replace a part of the configuration of each embodiment with another configuration.
　また、制御線や情報線は説明上必要と考えられるものを示しており、製品上必ずしも全ての制御線や情報線を示しているとは限らない。実際には殆ど全ての構成が相互に接続されていると考えてもよい。 In addition, the 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.
　１…制御装置　２…ＣＡＮドライバ（送受信部）　３…通信制御部　４…送信部　５…受信部　６…モード制御部　７…ＣＰＵ（制御部）　８…ＣＡＮメッセージ信号　９…送信部（ＴＸ）　１０…受信部（ＲＸ）　１１…監視部　１２…ＣＡＮ通信遮断回路　１３…ＣＡＮバス　１４…ＣＡＮ送信信号　１５…ＣＡＮ受信信号　１６…診断専用信号（診断用信号） 1 ... 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)

Claims (8)

  1. 　他の制御装置との間での通信を制御する制御部と、
    　前記制御部を監視する監視部と、
    　前記制御部からの指示に基づいて信号を前記他の制御装置に送信する送信部、前記他の制御装置からの前記信号を受信して前記制御部に受信結果を送出する受信部、及び、前記監視部からの指示に基づいて前記送信部及び前記受信部のいずれも動作させる通常モードと前記受信部のみを動作させる受信モードとを切り替えるモード制御部を有する送受信部と
    を有し、
    　前記制御部は、前記モード制御部が前記受信モードに切り替えられているときに、前記モード制御部の診断用信号を前記送信部に送出して前記送信部により前記信号を送信させ、前記診断用信号に基づく前記信号を前記制御部が受信したか否かに基づいて前記モード制御部の診断を行うことを特徴とする制御装置。     A control unit that controls communication with other control devices,
    A monitoring unit that monitors the control unit and
    A transmitting unit that transmits a signal to the other control device based on an instruction from the control unit, a receiving unit that receives the signal from the other control device and sends a reception result to the control unit, and the above. It has a transmission / reception unit having a mode control unit that switches between a normal mode in which both the transmission unit and the reception unit are operated and a reception mode in which only the reception unit is operated based on an instruction from the monitoring unit.
    When the mode control unit is switched to the reception mode, the control unit sends a diagnostic signal of the mode control unit to the transmission unit to transmit the signal by the transmission unit, and the diagnostic signal is transmitted. A control device comprising diagnosing the mode control unit based on whether or not the control unit has received the signal based on the signal.
  2. 　前記制御部は、前記診断用信号に基づく前記信号を前記制御部が受信しないとき、前記モード制御部が正常であると判定することを特徴とする請求項１に記載の制御装置。 The control device according to claim 1, wherein the control unit determines that the mode control unit is normal when the control unit does not receive the signal based on the diagnostic signal.
  3. 　前記制御部は、前記診断用信号に基づく前記信号を前記制御部が受信したとき、前記モード制御部が異常であると判定することを特徴とする請求項１に記載の制御装置。 The control device according to claim 1, wherein the control unit determines that the mode control unit is abnormal when the control unit receives the signal based on the diagnostic signal.
  4. 　前記送信部は通信バスを介して前記信号を送信し、
    　前記受信部は前記通信バスから前記信号を受信し、
    　前記制御部は、前記通信バスが使用されていないタイミングで前記診断用信号を前記送信部に送出することを特徴とする請求項１に記載の制御装置。     The transmitter transmits the signal via the communication bus.
    The receiving unit receives the signal from the communication bus and receives the signal.
    The control device according to claim 1, wherein the control unit transmits the diagnostic signal to the transmission unit at a timing when the communication bus is not used.
  5. 　前記制御装置は車両に搭載され、
    　前記制御部は、前記車両がキーオンのときに前記診断用信号を前記送信部に送出することを特徴とする請求項４に記載の制御装置。     The control device is mounted on the vehicle and
    The control device according to claim 4, wherein the control unit transmits the diagnostic signal to the transmission unit when the vehicle is key-on.
  6. 　前記制御装置は車両に搭載され、
    　前記制御部は、前記車両がキーオフのときに前記診断用信号を前記送信部に送出することを特徴とする請求項４に記載の制御装置。     The control device is mounted on the vehicle and
    The control device according to claim 4, wherein the control unit transmits the diagnostic signal to the transmission unit when the vehicle is keyed off.
  7. 　前記診断用信号は、前記他の制御装置との間の通信の制御に用いられる信号であることを特徴とする請求項１に記載の制御装置。 The control device according to claim 1, wherein the diagnostic signal is a signal used for controlling communication with the other control device.
  8. 　他の制御装置との間での通信を制御する制御部と、
    　前記制御部を監視する監視部と、
    　前記制御部からの指示に基づいて信号を前記他の制御装置に送信する送信部、前記他の制御装置からの前記信号を受信して前記制御部に受信結果を送出する受信部、及び、前記監視部からの指示に基づいて前記送信部及び前記受信部のいずれも動作させる通常モードと前記受信部のみを動作させる受信モードとを切り替えるモード制御部を有する送受信部と
    を有する制御装置による制御方法であって、
    　前記モード制御部を前記受信モードに切り替えた後、前記制御部に前記モード制御部の診断用信号を前記送信部に送出させて前記送信部により前記信号を送信させ、前記診断用信号に基づく前記信号を前記制御部が受信したか否かに基づいて前記モード制御部の診断を行うことを特徴とする制御方法。     A control unit that controls communication with other control devices,
    A monitoring unit that monitors the control unit and
    A transmitting unit that transmits a signal to the other control device based on an instruction from the control unit, a receiving unit that receives the signal from the other control device and sends a reception result to the control unit, and the above. A control method using a control device having a transmission / reception unit having a mode control unit for switching between a normal mode in which both the transmission unit and the reception unit are operated and a reception mode in which only the reception unit is operated based on an instruction from the monitoring unit. And
    After switching the mode control unit to the reception mode, the control unit transmits a diagnostic signal of the mode control unit to the transmission unit, the transmission unit transmits the signal, and the diagnostic signal is based on the diagnostic signal. A control method comprising diagnosing the mode control unit based on whether or not the control unit has received a signal.
PCT/JP2020/022618 2019-06-18 2020-06-09 Control device and control method WO2020255787A1 (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011189918A (en) * 2010-03-17 2011-09-29 Hitachi Automotive Systems Ltd Vehicular control device
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 (en) * 2010-03-17 2011-09-29 Hitachi Automotive Systems Ltd Vehicular control device
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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