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Vehicle control device

A vehicle control device, a vehicle technology, applied in the direction of the control device, vehicle position/route/height control, vehicle components, etc., to achieve the effect of improving reliability

Active Publication Date: 2019-04-02
HITACHI ASTEMO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Patent Document 1 discloses a vehicle control device that partially restricts the control functions of a plurality of sub-control devices when the operation of the microcomputer of the main control device is in a normal state and the power supply voltage of the microcomputer is out of the normal range.

Method used

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Examples

Experimental program
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Embodiment 1

[0032] figure 1 It is a schematic configuration diagram of an automatic driving system equipped in a vehicle using the present invention. figure 1 Among them, the automatic driving system includes a camera (first sensor) 1, a radar (second sensor) 2, and a self-vehicle position sensor (third sensor) 3 as external recognition sensors for recognizing the external situation of the vehicle. Autopilot button 4 to start autopilot control mode.

[0033] Furthermore, the automatic driving system includes an autonomous driving control unit (first ECU (first control command unit)) 11, an assist control unit (second ECU (second control command unit)) 12, a brake control unit (third motion control unit (3rd ECU)) 13, an engine control unit (4th operation control unit (4th ECU)) 14, and a power steering control unit (5th operation control unit (5th ECU)) 15.

[0034] The camera 1, the radar 2, the own vehicle position sensor 3, and the automatic driving button 4 are connected to the auto...

Embodiment 2

[0082] Figure 5 It is a diagram showing the internal configuration of the autonomous driving control unit 110 and the assistance control unit 120 responsible for assisting when abnormality occurs in the second embodiment of the present invention. The schematic configuration of the automatic driving system is the same as that of the first embodiment, so illustration and description thereof will be omitted.

[0083] In the autonomous driving control unit 110 in the second embodiment, the figure 2 The shown internal configuration of the autonomous driving control unit 11 includes a sub CPU (sub arithmetic processing unit) 11m, a sub power generation circuit 11k that outputs a voltage to the sub CPU 11m, and a sub communication circuit 11n. In addition, a monitoring unit 11h is formed in the main CPU 11b.

[0084] Sensor information from a camera (first sensor) 1 , a radar (second sensor) 2 , and a self-vehicle position sensor (third sensor) 3 , which are external recognition ...

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Abstract

The present invention achieves a vehicle control device capable of maintaining a control function and improving reliability during an operational abnormality in a processing unit or a power supply voltage abnormality. If there is no abnormality in the main CPU (11b) and main CPU (12b) of an autonomous travel control unit (11) and an auxiliary control unit (12), the autonomous travel control unit (11) and the auxiliary control unit (12) calculate control command values for autonomous driving control, and the CAN communication circuit (11c) of the autonomous travel control unit (11) is enabled,whereas the CAN communication circuit (12c) of the auxiliary control unit (12) is disabled. If an abnormality occurs in the autonomous travel control unit (11) and no abnormality occurs in the auxiliary control unit (12), the CAN communication circuit (11c) of the autonomous travel control unit (11) is disabled, whereas the CAN communication circuit (12c) of the auxiliary control unit (12) is enabled. If an abnormality occurs in the autonomous travel control unit (11) and no abnormality occurs in the auxiliary control unit (12) while autonomous driving control is being performed by the autonomous travel control unit (11), it is possible to maintain seamless autonomous driving control with little time delay.

Description

technical field [0001] The invention relates to a vehicle control device of an automatic driving system. Background technique [0002] In the automatic driving system of the vehicle, when an abnormality in the power supply voltage of the microcomputer of the ECU (Electronic Control Unit (Electronic Control Unit)) that controls the operation of the automatic driving is detected or the operation of the microcomputer is abnormal, the following appropriate measures are considered. processing. [0003] Patent Document 1 discloses a vehicle control device that partially restricts control functions of a plurality of sub-control devices when a microcomputer of a main control device is operating normally and a power supply voltage of the microcomputer is out of a normal range. [0004] In addition, although it is not an automatic driving system, Patent Document 2 discloses a technology for appropriately notifying the control drive source when the microcomputer of the ECU that adjust...

Claims

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Application Information

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IPC IPC(8): B60W50/023G05B9/02
CPCB60W50/023G05B9/02B60W50/029B60W2050/0295B60W60/0051B60W50/087B60W50/082G05D1/0077G05D1/0088B60R16/0232G07C5/04
Inventor 坂本英之池谷昭雄川端雅之天羽博考
Owner HITACHI ASTEMO LTD