Title:
N:1 BACKUP SYSTEM FOR DECENTRALIZED MICROCONTROLLER POWER SOURCE
Document Type and Number:
Japanese Patent JPS5856001
Kind Code:
A
Abstract:
PURPOSE:To relieve a burden on an operator greatly when a power source is faulty, by monitoring the number of normal power sources and stopping the arithmetic of a controller in case of the fault of the power source in accordance with priority. CONSTITUTION:For example, if one of five power sources has a fault, the arithmetic of only a local controller SLC-4 with low priority is stopped to reduce the current consumption of the system. Then, a transmission controller SLC-5, a device master controller MC, a fuel system controller SLC-1, an air system controller SLC-2, and a water feed system controller SLC-3 which control a control system with high priority are allowed to perform arithmetic continuously. Thus, the number of normal power sources is monitored to allow the controllers to perform control, and as the number of faulty power sources increases, the arithmetic is stopped starting at the controller with the lowest priority. Consequently, automatic control by the controllers is performed.
Inventors:
TSUJI AKIHIRO
KUMAZAKI MASAYUKI
KUMAZAKI MASAYUKI
Application Number:
JP15378381A
Publication Date:
April 02, 1983
Filing Date:
September 30, 1981
Export Citation:
Assignee:
HITACHI LTD
HITACHI ENG CO LTD
HITACHI ENG CO LTD
International Classes:
G05B9/02; G06F11/07; (IPC1-7): G05B9/02
Attorney, Agent or Firm:
Akio Takahashi