Title:
FAIL-SAFE DEVICE FOR ON-VEHICLE ELECTRONIC CONTROL SYSTEM
Document Type and Number:
Japanese Patent JP3042277
Kind Code:
B2
Abstract:
PURPOSE: To provide an on-vehicle electronic control device fail-safe device capable of turning the electronic control system to a safe state only by interrupting the system from a power supply and applying manual control to the system even when a system loading vehicle rushes into a strong electromagnetic field caused by illegular strong radio waves.
CONSTITUTION: Plural microcomputers 8, 12 for system monitoring circuits are individually arranged in order to execute failure diagnosis for an actuator driving circuit 2 and mutual failure diagnosis between respective monitoring circuits in the control system and a self-holding relay circuit 6 allowed to hold a conductive state only after turning on a start switch 5, be interrupted at the time of detecting a system failure by the monitoring circuit and hold the interrupted state until the switch 5 is turned on is connected between a power supply and the circuit 2.
Inventors:
Hideo Nakamura
Application Number:
JP22888493A
Publication Date:
May 15, 2000
Filing Date:
September 14, 1993
Export Citation:
Assignee:
Nissan Motor Co., Ltd
International Classes:
B60T8/96; B60T8/173; F02D41/22; F02D45/00; G05B9/02; G06F11/00; (IPC1-7): G05B9/02; B60T8/96; F02D41/22; F02D45/00
Domestic Patent References:
| JP4150701A | ||||
| JP4231258A | ||||
| JP62210138A | ||||
| JP571367A | ||||
| JP4328073A |
Attorney, Agent or Firm:
Junnosuke Nakamura (1 outside)