Patent US5029294A successfully refreshed from Google Patents.
US5029294A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sensor unit for traffic control of an automatic guided vehicle
Assignee: Samsung Electronics Co Ltd
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Filing: 1989-06-19
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Granted: 1991-07-02
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Expires: 2009-06-19
Abstract
Abstract A sensor unit for traffic control of an automatic guided vehicle. Traffic sensor means generates a signal of a specified frequency. Control means controls the direction of the automatic guided vehicle as a function of signal generated by the traffic sensor means. Control sensor means coupled with the traffic sensor means and the direction controlling means sends a stop signal to one or more of the vehicles to resolve conflicts at intersections and avoid collisions and deadlocking.
Inventors
- 👤 Chang S. Kim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:50
CPC Classifications
G; G05; G05D; G05D1/00; G05D1/20; G05D1/24; G05D1/247; B; B61; B61L; B61L3/00; B61L3/02; B61L3/08; B61L3/12; B61L3/126; G05D1/60; G05D1/69; G08; G08G; G08G1/00; G08G1/09; G05D2107/00; G05D2107/70
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
183 words
A traffic control system for preventing collisions of automated guided vehicles approaching a traffic intersection, comprising: (a) a traffic sensor unit located within each automated guided vehicle, said traffic sensor unit comprising: a first means for transmitting a first signal indicative of the transmit direction of the corresponding automated guided vehicle, and a second means for receiving a stop signal and for halting movement of the corresponding automated guided vehicle; (b) a controller unit located remote from said traffic sensor unit, said controller unit for managing the trafficking of said automated guided vehicles; and (c) a control sensor unit located at each traffic intersection, each said control sensor unit comprising: a third means for receiving said first signal from said traffic sensor unit of the automated guided vehicles; a fourth means for transmitting said first signal to said controller unit; a fifth means for receiving a signal from said controller unit indicative of a command to generate said stop signal for one or more said automated guided vehicles; and a sixth means for generating and transmitting said stop signal to said second means.
Claim 2
Dependent Claim
183 words
A traffic control system for preventing collisions of automated guided vehicles approaching a traffic intersection, comprising: (a) a traffic sensor unit located within each automated guided vehicle, said traffic sensor unit comprising: a first means for transmitting a first signal indicative of the transmit direction of the corresponding automated guided vehicle, and a second means for receiving a stop signal and for halting movement of the corresponding automated guided vehicle; (b) a controller unit located remote from said traffic sensor unit, said controller unit for managing the trafficking of said automated guided vehicles; and (c) a control sensor unit located at each traffic intersection, each said control sensor unit comprising: a third means for receiving said first signal from said traffic sensor unit of the automated guided vehicles; a fourth means for transmitting said first signal to said controller unit; a fifth means for receiving a signal from said controller unit indicative of a command to generate said stop signal for one or more said automated guided vehicles; and a sixth means for generating and transmitting said stop signal to said second means.
Claim 3
Dependent Claim
14 words
The traffic control system of claim 1, wherein said third means comprises a transceiver.
Claim 4
Dependent Claim
26 words
The traffic control system of claim 2, wherein said fifth means comprises an input/output terminal to electronically connect said control sensor unit to said controller unit.
Claim 5
Independent Claim
282 words
A method in a traffic control system for preventing collisions of automated guided vehicles approaching a traffic intersection, the system comprising a traffic sensor unit located within each automated guided vehicle, said traffic sensor unit having a first means for transmitting a first signal indicative of the transmit direction of the corresponding automated guided vehicle, and a second means for receiving a stop signal and for halting movement of the corresponding automated guided vehicle; a controller unit located remote from said traffic sensor unit and which manages the trafficking of said automated guided vehicles; and a control sensor unit located at each traffic intersection, each said control sensor unit having a third means for receiving said first signal from said traffic sensor unit of the automated guided vehicles; a fourth means for transmitting said first signal to said controller unit; a fifth means for receiving a signal from said controller unit indicative of a command to generate said stop signal for one or more said automated guided vehicles; and a sixth means for generating and transmitting said stop signal to said second means, the method comprising the step of: (1) transmitting first signals from the automated guided vehicles approaching the traffic intersection to indicate which direction each of said vehicles intends to pursue at said traffic intersection; (2) receiving said first signals at said control sensor unit; (3) communicating said first signals to said controller unit from said control sensor unit; (4) transmitting a command at said controller unit to said control sensor unit to transmit the stop signal to one or more said automated guided vehicles; and (5) transmitting said stop signal at said control sensor unit to said second means.
Claim 6
Independent Claim
282 words
A method in a traffic control system for preventing collisions of automated guided vehicles approaching a traffic intersection, the system comprising a traffic sensor unit located within each automated guided vehicle, said traffic sensor unit having a first means for transmitting a first signal indicative of the transmit direction of the corresponding automated guided vehicle, and a second means for receiving a stop signal and for halting movement of the corresponding automated guided vehicle; a controller unit located remote from said traffic sensor unit and which manages the trafficking of said automated guided vehicles; and a control sensor unit located at each traffic intersection, each said control sensor unit having a third means for receiving said first signal from said traffic sensor unit of the automated guided vehicles; a fourth means for transmitting said first signal to said controller unit; a fifth means for receiving a signal from said controller unit indicative of a command to generate said stop signal for one or more said automated guided vehicles; and a sixth means for generating and transmitting said stop signal to said second means, the method comprising the step of: (1) transmitting first signals from the automated guided vehicles approaching the traffic intersection to indicate which direction each of said vehicles intends to pursue at said traffic intersection; (2) receiving said first signals at said control sensor unit; (3) communicating said first signals to said controller unit from said control sensor unit; (4) transmitting a command at said controller unit to said control sensor unit to transmit the stop signal to one or more said automated guided vehicles; and (5) transmitting said stop signal at said control sensor unit to said second means.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-07-01 | 1994-12-31 | 1995-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-07-01 | 1998-12-31 | 1999-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-07-01 | 2002-12-31 | 2003-07-02 | $7700.00 | Window Closed / Lapsed |