Forklift activated projector
First Claim
Patent Images
1. An apparatus for detecting and for warning pedestrian traffic approaching an intersection comprising:
- a sensing system for controlling a projector and for identifying traffic crossing at the intersection, said sensing system having a first unitary sensor and a second unitary sensor, each of said first unitary sensor and said second unitary sensor being capable of detecting a pedestrian and a moving metal object, each of said first unitary sensor and said second unitary sensor having an activatable pedestrian detection mode;
said first unitary sensor being positioned to detect, with microwaves, the moving metal object approaching the intersection from a first direction when the moving metal object enters a first metal detection area, said second unitary sensor being positioned to detect, with microwaves, the moving metal object approaching the intersection from a second direction when the moving metal object enters a second metal detection area;
said first unitary sensor being positioned to detect the pedestrian approaching the intersection from a first direction when the pedestrian enters a first pedestrian detection area, said second unitary sensor being positioned to detect the pedestrian approaching the intersection from, a second direction when the pedestrian enters a second pedestrian detection area;
said sensing system being responsive to said first unitary sensor d said second unitary sensor;
said sensing system causing said projector to project a warning message into or near said intersection when said first unitary sensor senses the moving metal object enter into said first metal detection area and in a direction that is toward the intersection, said sensing system causing said projector to project a warning message into or near said intersection when said second unitary sensor senses the moving metal object enter into said second metal detection area and in a direction that is toward the intersection, said warning message being visible to pedestrians walking toward the intersection; and
said sensing system causing said projector to project a warning message into or near said intersection when said pedestrian detection mode of said first unitary sensor is activated and said first unitary sensor senses the pedestrian entering into said first pedestrian detection area, said sensing system causing said, projector to project a warning message into or near said intersection when said pedestrian detection mode of said second unitary sensor is activated and said second unitary sensor senses the pedestrian entering into said second pedestrian detection area, said warning message being visible to pedestrians walking toward the intersection.
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Abstract
An apparatus detects and warns pedestrians of traffic approaching an intersection. The apparatus includes multiple unitary sensors for detecting traffic, each unitary sensor being capable of detecting a pedestrian and a moving metal object such as a forklift. The unitary sensors use microwaves to detect moving metal objects and, in some embodiments can also use microwaves to detect pedestrians. Each of the unitary sensors has an activatable pedestrian mode that, when activated, allows the unitary sensor to sense and detect the presence of pedestrians.
15 Citations
45 Claims
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1. An apparatus for detecting and for warning pedestrian traffic approaching an intersection comprising:
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a sensing system for controlling a projector and for identifying traffic crossing at the intersection, said sensing system having a first unitary sensor and a second unitary sensor, each of said first unitary sensor and said second unitary sensor being capable of detecting a pedestrian and a moving metal object, each of said first unitary sensor and said second unitary sensor having an activatable pedestrian detection mode; said first unitary sensor being positioned to detect, with microwaves, the moving metal object approaching the intersection from a first direction when the moving metal object enters a first metal detection area, said second unitary sensor being positioned to detect, with microwaves, the moving metal object approaching the intersection from a second direction when the moving metal object enters a second metal detection area; said first unitary sensor being positioned to detect the pedestrian approaching the intersection from a first direction when the pedestrian enters a first pedestrian detection area, said second unitary sensor being positioned to detect the pedestrian approaching the intersection from, a second direction when the pedestrian enters a second pedestrian detection area; said sensing system being responsive to said first unitary sensor d said second unitary sensor; said sensing system causing said projector to project a warning message into or near said intersection when said first unitary sensor senses the moving metal object enter into said first metal detection area and in a direction that is toward the intersection, said sensing system causing said projector to project a warning message into or near said intersection when said second unitary sensor senses the moving metal object enter into said second metal detection area and in a direction that is toward the intersection, said warning message being visible to pedestrians walking toward the intersection; and said sensing system causing said projector to project a warning message into or near said intersection when said pedestrian detection mode of said first unitary sensor is activated and said first unitary sensor senses the pedestrian entering into said first pedestrian detection area, said sensing system causing said, projector to project a warning message into or near said intersection when said pedestrian detection mode of said second unitary sensor is activated and said second unitary sensor senses the pedestrian entering into said second pedestrian detection area, said warning message being visible to pedestrians walking toward the intersection. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An apparatus for detecting and for warning pedestrian traffic approaching an intersection comprising:
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a sensing system for controlling a projector and for identifying traffic crossing at the intersection, said sensing system having a first unitary sensor and a second unitary sensor, each of said first unitary sensor and said second unitary sensor being capable of detecting a pedestrian and a moving metal object, each of said first unitary sensor and said second unitary sensor having an activatable pedestrian detection mode; said first unitary sensor being positioned to detect, with microwaves, the moving metal object approaching the intersection from a first direction when the moving metal object enters a first metal detection area, said second unitary sensor being positioned to detect, with microwaves, the moving metal object approaching the intersection from a second direction when the moving metal object enters a second metal detection area; said first unitary sensor being positioned to detect the pedestrian approaching the intersection from a first direction when the pedestrian enters a first pedestrian detection area, said second unitary sensor being positioned to detect the pedestrian approaching the intersection from a second direction when the pedestrian enters a second pedestrian detection area; said sensing system being responsive to said first unitary sensor and said second unitary sensor; said sensing system causing said projector to project a warning message into or near said intersection and a secondary arrow signal pointing toward said first metal detection area when said first unitary sensor senses the moving metal object entering into said first metal detection area and in a direction that is toward the intersection, said sensing system causing said projector to project a warning message into or near said intersection and a secondary arrow signal pointing toward said second metal detection area when said second unitary sensor senses the moving metal object entering into said second metal detection area and in a direction that is toward the intersection, said warning message and said secondary arrow signal being visible to pedestrians walking toward the intersection; and said sensing system causing said projector to project a warning message into or, near said intersection when said pedestrian detection mode of said first unitary sensor is activated and first unitary sensor senses the pedestrian entering into said first pedestrian detection area, said sensing system causing said projector to project a warning message into or near said intersection when said pedestrian detection mode of said second unitary sensor is activated and said second unitary sensor senses the pedestrian entering into said second pedestrian detection area, said warning message being visible to pedestrians walking toward the intersection. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. An apparatus for detecting and for warning pedestrian traffic approaching an intersection comprising:
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a sensing system for controlling a projector and for identifying traffic crossing at the intersection, said sensing system having a first unitary sensor, a second unitary sensor, a third unitary sensor, and a fourth unitary sensor, each of said first, second, third, and fourth unitary sensors being capable of detecting a pedestrian and a moving metal object, each of said first, second, third, and fourth unitary sensors having an activatable pedestrian detection mode; said first unitary sensor being positioned to detect, with microwaves, the moving metal object approaching the intersection from a first direction when the moving metal object enters a first metal detection area, said second unitary sensor being positioned to detect, with microwaves, the moving metal object approaching the intersection from a second direction when the moving metal object enters a second metal detection area, said third unitary sensor being positioned to detect, with microwaves, the moving metal object approaching the intersection from a third direction when the moving metal object enters a third metal detection area, said fourth unitary sensor being positioned to detect, with microwaves, the moving, metal object approaching the intersection from a fourth direction when the moving metal, object enters a fourth metal detection area; said first unitary sensor being positioned to detect the pedestrian approaching the intersection from a first direction when the pedestrian enters a first pedestrian detection area, said second unitary sensor being positioned to detect the pedestrian approaching, the intersection from a second direction when the pedestrian enters a second pedestrian detection area, said third unitary sensor being positioned to detect the pedestrian approaching the intersection from a third direction when the pedestrian enters a third pedestrian detection area, said fourth unitary sensor being positioned to detect the pedestrian approaching the intersection from a fourth direction when the pedestrian enters a fourth pedestrian detection area; said sensing system being responsive to said first, second, third, and fourth unitary sensors; said sensing system causing said projector to project a warning message into or near said intersection when said first unitary sensor senses the moving metal object enter into said first metal detection area and in a direction that toward the intersection, said sensing system causing said projector to project a warning message into or near said, intersection when said second unitary sensor senses the moving, metal object enter into said second, metal detection area and in a direction that is toward the intersection, said sensing system causing said projector to project a warning message into or near said intersection when said third unitary sensor senses the moving metal object enter into said third metal detection area and in a direction that is toward the intersection, said sensing system causing said projector to project a warning message into or near said intersection when said fourth unitary sensor senses the moving metal object enter into said fourth metal detection area and in a direction that is toward the intersection, said warning message being visible to pedestrians walking toward the intersection; and said sensing system causing said projector to project a warning message into or near said intersection when said pedestrian detection, mode of said first unitary sensor is activated and said first unitary sensor senses the pedestrian enter into said first pedestrian detection area, said sensing system causing said projector to project a warning, message into or near said intersection when said pedestrian detection mode of said second unitary sensor is activated and said second unitary sensor senses the pedestrian enter into said second pedestrian detection area, said sensing system causing said projector to project a warning message into or near said intersection when said pedestrian detection mode of said third unitary sensor is activated and said third unitary sensor senses the pedestrian enter into said third pedestrian detection area, said sensing system causing said projector to project a warning message into or near said intersection when said pedestrian detection mode of said fourth unitary sensor is activated and said fourth unitary sensor senses the pedestrian enter into said fourth, pedestrian detection area, said warning message from said projector being visible to pedestrians walking toward the intersection. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27)
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28. An intersection arrangement comprising:
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an aisle or roadway, said aisle or roadway allowing for the movement of forklifts and pedestrians along the length of said aisle or roadway; a pedestrian walkway, said pedestrian walkway meeting and intersecting said aisle or roadway at an intersection located at a point along the length of said aisle or roadway; an apparatus for detecting and for warning pedestrian traffic approaching said intersection comprising; a sensing system for controlling a projector and for identifying traffic crossing at the intersection, said sensing system having a first unitary sensor and a second unitary sensor, each of said first unitary sensor and said second unitary sensor being capable of detecting a pedestrian and a moving metal object, each of said first unitary sensor and said second unitary sensor having an activatable pedestrian detection mode; said first unitary sensor being positioned to detect, with microwaves, the moving metal object approaching the intersection from a first direction when the moving metal object enters a first metal detection area, said second unitary sensor being positioned to detect, with microwaves, the moving metal object approaching the intersection from a second direction when the moving metal object enters a second metal detection area; said first unitary sensor being positioned to detect the pedestrian approaching the intersection from a first direction when the pedestrian enters a first pedestrian detection area, said second unitary sensor being positioned to detect the pedestrian approaching the intersection, from a second direction when the pedestrian enters a second pedestrian detection area; said sensing system being responsive to said first unitary sensor and said second unitary sensor; said sensing system causing said projector to project a warning message into or near said intersection when said first unitary sensor senses the moving metal object enter into said first metal detection area and in a direction that toward the intersection, said sensing system causing said projector to project a warning message into or near said intersection when said second unitary sensor senses the moving metal object enter into said second metal detection area and in a direction that is toward the intersection, said warning message being visible to pedestrians walking toward the intersection; and said, sensing system causing said projector to project a warning message into or near said intersection when said pedestrian detection mode and said first unitary sensor is activated and said first unitary sensor senses the pedestrian entering into said first pedestrian detection area, said sensing system causing said projector to project a warning message into or near said intersection when said pedestrian detection mode of said second unitary sensor is activated and said second unitary sensor senses the pedestrian entering into said second pedestrian detection area, said warning message being visible to pedestrians walking toward the intersection. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35, 36)
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37. A method for detecting and for warning pedestrian traffic approaching an intersection comprising:
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providing a sensing system for controlling a projector and for identifying traffic crossing at the intersection, said sensing system having a first unitary sensor and a second unitary sensor, each of said first unitary sensor and said, second unitary sensor being capable of detecting a pedestrian and a moving metal object, each of said first unitary sensor and said second unitary sensor having an activatable pedestrian detection mode; positioning said first unitary sensor to detect, with microwaves, the moving metal object approaching the intersection from a first direction when the moving metal object enters a first metal detection area, positioning said second unitary sensor to detect, with microwaves, the moving metal object approaching the intersection from a second direction when the moving metal object enters a second metal detection area; positioning said first unitary sensor to detect the pedestrian approaching the intersection from a first direction when the pedestrian enters a first pedestrian detection area, positioning said second unitary sensor to detect the pedestrian approaching the intersection from a second direction when the pedestrian enters a second pedestrian detection area, said sensing system being responsive to said first unitary sensor and said second unitary sensor; causing said sensing system to project with said projector a warning message into or near said intersection when said first unitary sensor senses the moving metal object entering into said first metal detection area and in a direction that is toward the intersection, causing said sensing system to project with said projector a warning message into or near said intersection when said second unitary sensor senses the moving metal object enter into said second metal detection area and in a direction that is toward the intersection, said warning message projected to be visible to pedestrians walking toward the intersection; activating said pedestrian detection mode of said first unitary sensor to cause said sensing system to cause said projector to project a warning message into or near said intersection when, said pedestrian detection mode and said first unitary sensor is activated and said first unitary sensor senses the pedestrian entering into said first pedestrian detection area, activating said pedestrian detection mode of said second unitary sensor to cause said sensing system to cause said projector to project a warning message into or near said intersection when said pedestrian detection mode of said second unitary sensor is activated and said second unitary sensor senses the pedestrian entering into said second pedestrian detection area, said warning message being visible to pedestrians walking toward the intersection. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44, 45)
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Specification