Patent EP0482424B1 successfully refreshed from Google Patents.
EP0482424B1
Expired / Lapsed
EP
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Carriage running control system
Assignee: Daifuku Co Ltd
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Filing: 1991-10-09
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Granted: 1996-01-10
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Expires: 2011-10-09
Abstract
No abstract record available.
Inventors
- 👤 Hideichi Tanizawa
- 👤 Yoshitaka Watanabe
- 👤 Michio Iwama
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 12:50
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/02; G05D1/021; G05D1/0259; G05D1/0261; G05D1/20; G05D1/24; G05D1/244; G05D1/0263; G05D1/0268; G05D1/0272; G05D1/0287; G05D1/0289; G05D1/0291; G05D1/0297; G05D1/22; G05D1/221; G05D1/226; G05D1/60; G05D1/646; G05D1/69; G05D2101/00; G05D2101/10
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
305 words
A carriage running control system comprising: a guideline (L); a zone (Z) provided in said guide line (L); at least one memory medium (T) installed on the ground at an entry end of said zone (Z), said memory medium (T) being capable of reading and writing running control information; a plurality of carriages (A), each including communication means (7) for communicating said running control information with said memory medium (T), control means (9) installed on each of said carriages (A) for controlling running of said carriages (A) based on said running control information read by said communication means (7), said control means (9) causing said communication means (7) to read presence information stored in said memory medium (T) indicating presence of a preceding carriage in said zone (Z), so that, when the preceding carriage is present in said zone (Z), said control means (9) being operable to stop a succeeding carriage, thereby to prevent this succeeding carriage from entering said zone (Z), and so that, when the preceding carriage is absent in said zone (Z), said control means (9) being operable to allow the succeeding carriage to enter said zone (Z); detecting means (SW) provided at an exit end of said zone (Z) for detecting passage of said carriages, said detecting means (SW) being operable upon detecting of passage of the carriage to reset said presence information stored in said memory medium (T); characterized in that said guideline (L) is discontinued at predetermined curved sections including a branching point (D), a merging point (J) and corners (P); and each of said carriages (A) is controllable on the basis of information received from said memory medium (T) to follow said guideline (L) to run autonomously in said predetermined sections (P, D, J) of said guideline (L) from an upstream guideline (L1) to a downstream guideline (L2).
Claim 2
Dependent Claim
59 words
A carriage running control system as claimed in claim 1, characterized in that said guideline (L) is in loop form and comprises a magnetic member having a rectangular cross section with an N-pole disposed on a front thereof an an S-pole disposed on a back, said magnetic member being surrounded by an epoxy resin flush with a track surface.
Claim 3
Dependent Claim
61 words
A carriage running control system as claimed in claim 1, characterized by a supplementary guideline (LS) extending parallel to and spaced from a predetermined section of said guideline (L), said control means (9) being operable to execute a line change control for causing the carriage (A) to run from the predetermined section of said guideline (L) to said supplementary guideline (LS).
Claim 4
Dependent Claim
54 words
A carriage running control system as claimd in claim 3, characterized in that said control means (9) is operable to execute the line change control for causing the carriage (A) to return to the predetermined section of said guideline (L) after running from the predetermined section of said guideline to said supplementary guideline (LS).
Claim 5
Dependent Claim
75 words
A carriage running control system as claimed in claim 4, characterized in that said memory medium (T) stores running control information for allowing execution of said line change control, said communication means (7) being operable to read said running control information from said memory medium (T) as the carriage (A) approaches said memory medium, said control means (9) executing said line change control based on said running control information read by said communication means (7).
Claim 6
Dependent Claim
27 words
A carriage running control system as claimed in claim 1, characterized by safety means for use when each carriage fails to run onto said downstream guideline (L2).
Claim 7
Dependent Claim
98 words
A carriage running control system as claimed in claim 6, characterized in that said safety means includes a restrictor line (LR) distinguishable from said downstream guideline (L2) and extending substantially parallel to and spaced, in a dwonstream direction with respect to a running direction along said upstream guideline (L1), from said downstream guideline, a sensor mounted on each carriage (A) for detecting said restrictor line (LR), and control means having a discriminating function to determine from detection by said sensor of said restrictor line (LR) that the carriage (A) has failed to run onto said downstream guideline (L2).
Claim 8
Dependent Claim
46 words
A carriage running control system as claimed in claim 7, characterized in that said guideline (L) is a magnetic line having one of the magnetic poles to be detected, and said restrictor line (LR) is a magnetic line having the other magnetic pole to be detected.
Claim 9
Dependent Claim
41 words
A carriage running control system as claimed in claim 1, characterized in that each of said carriages (A) further includes measuring means (16) for measuring a running distance based on a rotating rate of a ground wheel of the carriage (A).
Claim 10
Dependent Claim
91 words
A running control system as claimed in claim 9, characterized in that said control means (9) stores, as distance information, a distance from said memory medium installed adjacent thereto, said control means (9) determining that a running abnormality has occured when a predetermined permissible error is exceeded by a difference between said distance information read by said communication means as the carriage (A) approaches said further memory medium and said running distance measured by said measuring means as the carriage (A) runs from said memory medium to said further memory medium.
References Cited (Backward Citations)
No citation records indexed.
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