Title:
ALARM SYSEM FOR WORKING MACHINE
Document Type and Number:
Japanese Patent JP2785081
Kind Code:
B2
Abstract:
PURPOSE: To more safely issue an alarm and to perform the correct object control by setting plural virtual danger potential zones to the periphery of a working machine, and when a monitoring object enters a setting zone, moving an object from a zone with low danger to a zone with high danger, detecting the monitoring object and issuing the alarm.
CONSTITUTION: When there is an object stored already as a monitoring object, the coordinate value and the coordinate value in which a new flag is detected are compared, and at the time of entering the prescribed range, a potential value is compared between these, and it is decided whether or not the potential value is increased. When a danger potential value is increased, it remains at a monitoring object table 9f of a memory 9 as the monitoring object, and a parametor to deliver the present virtual danger potential zone to an alarm processing program 9d is stored in the memory 9. When an MPU 10 starts the alarm processing program 9d, the parametor stored in a memory 8 is received and an alarm signal is issued.
Inventors:
TANAKA YASUO
ONO KOZO
WATANABE HIROSHI
ONO KOZO
WATANABE HIROSHI
Application Number:
JP20536691A
Publication Date:
August 13, 1998
Filing Date:
July 22, 1991
Export Citation:
Assignee:
HITACHI KENKI KK
International Classes:
G08B23/00; E02F9/24; G08B21/00; G08B25/10; (IPC1-7): G08B21/00; E02F9/24
Domestic Patent References:
| JP1303597A | ||||
| JP470587A | ||||
| JP1156256U |
Attorney, Agent or Firm:
Kajiyama Bozen (1 person outside)