Title:
電子制御装置
Document Type and Number:
Japanese Patent JP6683104
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide an electronic control device capable of reducing an execution frequency of fail-safe processing with a failure of a power supply circuit.SOLUTION: An ECU 1 comprises a main microcomputer 11, a sub microcomputer 12, a first power supply circuit 15, a second power supply circuit 16 and an abnormality detection part 20. Output voltages of the first power supply circuit 15 and the second power supply circuit 16 are supplied to the main microcomputer 11 and the sub microcomputer 12 via an internal power supply line Ln that is constructed inside the ECU 1. The first power supply circuit 15 is activated in a case where an ignition switch 8 is turned on, and starts outputting a predetermined target application voltage. The abnormality detection part 20 successively monitors the output voltage of the first power supply circuit 15. In a case where the output voltage of the first power supply circuit 15 is out of a normal range, the abnormality detection part 20 outputs an abnormality detection signal indicating that the first power supply circuit 15 is under an abnormal operation. In a case where the abnormality detection part 20 outputs the abnormality detection signal, the first power supply circuit 15 is stopped, and the second power supply circuit 16 is activated instead.SELECTED DRAWING: Figure 2
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Inventors:
Youto Ito
Application Number:
JP2016217505A
Publication Date:
April 15, 2020
Filing Date:
November 07, 2016
Export Citation:
Assignee:
株式会社デンソー
International Classes:
H02J1/00; B60R16/02; G06F11/30
Domestic Patent References:
| JP10297395A | ||||
| JP2005208939A | ||||
| JP2007213137A | ||||
| JP200940348A | ||||
| JP201260841A | ||||
| JP201458290A | ||||
| JP201632989A | ||||
| JP2016128308A | ||||
| JP2016159672A |
Foreign References:
| WO2015194407A1 |
Attorney, Agent or Firm:
Kazuyuki Yahagi
Taihei Nonobe
Takanori Kubo
Taihei Nonobe
Takanori Kubo