MULTIPLE ZONE SENSING FOR MATERIALS HANDLING VEHICLES
First Claim
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1. A materials handling vehicle having detection zone control comprising:
- a power unit for driving the vehicle;
a load handling assembly that extends from the power unit;
at least one contactless obstacle sensor on the vehicle operable to define at least two detection zones, each detection zone defining an area at least partially in front of a forward traveling direction of the vehicle; and
a controller that is configured to control at least one aspect of the vehicle, the controller further configured to receive information obtained from the at least one obstacle sensor to;
perform a first action if the vehicle is traveling and an obstacle is detected in a first one of the detection zones; and
perform a second action different from the first action if the vehicle is traveling and an obstacle is detected in a second one of the detection zones.
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Abstract
A supplemental control system for a materials handling vehicle comprises one or more sensors capable of defining multiple contactless detection zones at least towards the front of the forward travel direction of a remotely controlled vehicle. The vehicle responds to the detection of objects within the designated zones based upon predetermined actions, such as to slow down or stop the vehicle, and/or to take other action, such as to perform a steer angle correction.
158 Citations
46 Claims
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1. A materials handling vehicle having detection zone control comprising:
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a power unit for driving the vehicle; a load handling assembly that extends from the power unit; at least one contactless obstacle sensor on the vehicle operable to define at least two detection zones, each detection zone defining an area at least partially in front of a forward traveling direction of the vehicle; and a controller that is configured to control at least one aspect of the vehicle, the controller further configured to receive information obtained from the at least one obstacle sensor to; perform a first action if the vehicle is traveling and an obstacle is detected in a first one of the detection zones; and perform a second action different from the first action if the vehicle is traveling and an obstacle is detected in a second one of the detection zones. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A materials handling vehicle capable of supplemental remote control comprising:
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a power unit for driving the vehicle; a load handling assembly that extends from the power unit; a receiver at the vehicle for receiving transmissions from a corresponding remote control device, the transmissions comprising at least a first type signal designating a travel request requesting the vehicle to travel; at least one contactless obstacle sensor on the vehicle that is operable to define at least two detection zones, each detection zone defining an area at least partially in front of a forward traveling direction of the vehicle when the vehicle is traveling under remote control in response to a travel request; and a controller that communicates with the receiver and with a traction control system of the vehicle to operate the vehicle under remote control in response to receiving travel requests from the remote control device, wherein the controller receives information obtained from the at least one obstacle sensor and is configured to; perform a first action if the vehicle is traveling under remote control in response to a travel request and an obstacle is detected in a first one of the detection zones; and perform a second action different from the first action if the vehicle is traveling under remote control in response to a travel request and an obstacle is detected in a second one of the detection zones. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A multiple detection zone supplemental remote control system for a materials handling vehicle comprising:
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a remote control device manually operable by an operator to wirelessly transmit at least a first type signal designating a travel request requesting the vehicle to travel by a predetermined amount; a receiver for installation on the vehicle that receives transmissions from the corresponding remote control device; at least one contactless obstacle sensor that is operable to define at least two detection zones, each detection zone defining an area at least partially in front of a forward traveling direction of the vehicle when the vehicle is traveling under remote control in response to a travel request; and a controller that communicates with the receiver and with a traction control system of the vehicle to operate the vehicle under remote control in response to receiving travel requests from the remote control device, wherein the controller receives information obtained from the at least one obstacle sensor and is configured to; perform a first action if the vehicle is traveling under remote control in response to a travel request and an obstacle is detected in a first one of the detection zones; and perform a second action different from the first action if the vehicle is traveling under remote control in response to a travel request and an obstacle is detected in a second one of the detection zones. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. A multiple detection zone control system for a materials handling vehicle comprising:
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at least one contactless obstacle sensor that is operable to define at least two detection zones, each detection zone defining an area at least partially in front of a forward traveling direction of the vehicle when the vehicle is traveling; and a controller that is configured to integrate with and control at least one aspect of the vehicle, the controller further configured to receive information obtained from the at least one obstacle sensor to; perform a first action if the vehicle is traveling and an obstacle is detected in a first one of the detection zones; and perform a second action different from the first action if the vehicle is traveling and an obstacle is detected in a second one of the detection zones.
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34. A method of operating a materials handling vehicle utilizing multiple detection zones comprising:
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defining a first detection zone in an area proximate to the vehicle; defining a second detection zone in an area proximate to the vehicle; performing a first action if an unacceptable detection occurs in the first detection zone; and performing a second action different from the first action if an unacceptable detection occurs in the second detection zone. - View Dependent Claims (35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46)
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Specification