Title:
RECORDING METHOD OF PLANT OPERATION INFORMATION
Document Type and Number:
Japanese Patent JPS5837712
Kind Code:
A
Abstract:
PURPOSE:To record information before and after the generation of a failure with less storage capacity, by performing recording at normal operation while revising within a prescribed storage time and recording within a time width less than said time from the generation of a failure. CONSTITUTION:A picture and audio signal fetch controller 4 scans M kinds of picture signals and N kinds of audio signals in high speed and gives them to a picture and audio signal storage controller 5. The controller 5 stores the scanning data of the M+N kinds for a time T with the endless system at normal operation as shown in figure. Further, the controller 5 inputs a trigger signal 10 of failure detection and temporarily stops with recording only for a prescribed time width T1. Then, the data before the triggering is recorded for a time width T2 and the data after the triggering is recorded for the time T1. This recording is transferred to a recorder 6 and the operation information before and after the generation of failure can be displayed on reproducers 8 and 9.
Inventors:
KATOU KANJI
Application Number:
JP13413381A
Publication Date:
March 05, 1983
Filing Date:
August 28, 1981
Export Citation:
Assignee:
HITACHI LTD
International Classes:
G05B23/02; G06F17/40; (IPC1-7): G05B23/02
Domestic Patent References:
| JP55078202B |
Attorney, Agent or Firm:
Katsuo Ogawa