Method Of Operating A Fork-Lift Truck, Computer Program Product, And A Fork-Lift Truck
First Claim
1. A method of operating a forklift truck, said method comprising:
- receiving a hydraulic pressure signal P from at least one detection device, wherein the hydraulic pressure signal P corresponds to hydraulic pressure in at least a section of hydraulic system of a fork-lift truck;
transferring said hydraulic pressure signal P to an electronic load carrier unit;
determining by means of the electronic load carrier unit whether the hydraulic pressure signal P adopts a value within a predetermined value range Pval;
determining by means of the electronic load carrier unit if a load carrier of the forklift truck is at least partially supported by an external object not being part of the forklift truck or a fixed internal object of the fork-lift truck based on the determination whether the hydraulic pressure signal is within the predetermined value range Pval; and
sending an indication to an operator that the load carrier is supported by the external object or the fixed internal object of the forklift truck, if said load carrier is determined to be at least partially supported by the external object or the fixed internal object of the fork-lift truck.
1 Assignment
0 Petitions
Accused Products
Abstract
A method of operating a fork-lift truck includes steps to determine a hydraulic pressure signal P by means of the at least one detection device, wherein the hydraulic pressure signal P corresponds to an hydraulic pressure in, at least a section, of an hydraulic system of a fork-lift truck 1, transfer the hydraulic pressure signal P to an electronic load carrier unit, determine by means of the electronic load carrier unit whether the hydraulic pressure signal P adopts a value, within a predetermined value range Pval, determine by means of the electronic load carrier unit if a load carrier of the forklift truck is, at least partially, supported by an external object no being part of the forklift truck or a fixed internal object of the fork-lift truck, based on the determination whether the hydraulic pressure signal is within the predetermined value range Pval. Embodiments of the invention also include a computer program product and a fork-lift truck that can perform the method.
16 Citations
17 Claims
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1. A method of operating a forklift truck, said method comprising:
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receiving a hydraulic pressure signal P from at least one detection device, wherein the hydraulic pressure signal P corresponds to hydraulic pressure in at least a section of hydraulic system of a fork-lift truck; transferring said hydraulic pressure signal P to an electronic load carrier unit; determining by means of the electronic load carrier unit whether the hydraulic pressure signal P adopts a value within a predetermined value range Pval; determining by means of the electronic load carrier unit if a load carrier of the forklift truck is at least partially supported by an external object not being part of the forklift truck or a fixed internal object of the fork-lift truck based on the determination whether the hydraulic pressure signal is within the predetermined value range Pval; and sending an indication to an operator that the load carrier is supported by the external object or the fixed internal object of the forklift truck, if said load carrier is determined to be at least partially supported by the external object or the fixed internal object of the fork-lift truck. - View Dependent Claims (2, 3, 4, 5)
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6. A method of operating a forklift truck, said method comprising:
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receiving a hydraulic pressure signal P from at least one detection device, wherein the hydraulic pressure signal P corresponds to an hydraulic pressure in at least a section of hydraulic system of a fork-lift truck; transferring said hydraulic pressure signal P to an electronic load carrier unit; determining by means of the electronic load carrier unit whether the hydraulic pressure signal P adopts a value within a predetermined value range Pval; determining by means of the electronic load carrier unit if a load carrier of the forklift truck is at least partially supported by an external object not being part of the forklift truck or a fixed internal object of the fork-lift truck based on the determination whether the hydraulic pressure signal is within the predetermined value range Pval, and sending an indication to a control unit controlling operation of the fork-lift truck that the load carrier of the forklift truck is at least partially supported by an external object not being part of the forklift truck or a fixed internal object of the fork-lift truck. - View Dependent Claims (7, 8)
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9. A computer program product comprising:
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computer readable code, that when executed performs the steps of receiving a hydraulic pressure signal P from at least one detection device, wherein the hydraulic pressure signal P corresponds to a hydraulic pressure in at least a section of a hydraulic system of a fork-lift truck; transferring said hydraulic pressure signal P to an electronic load carrier unit; determining by means of the electronic load carrier unit whether the hydraulic pressure signal P adopts a value within a predetermined value range Pval; determining by means of the electronic load carrier unit if a load carrier of the forklift truck is at least partially supported by an external object not being part of the forklift truck or a fixed internal object of the fork-lift truck based on the determination whether the hydraulic pressure signal is within the predetermined value range Pval, and sending an indication to an operator that the load carrier is supported by the external object or the fixed internal object of the fork-lift truck, if said load carrier is determined to be at least partially supported by the external object or the fixed internal object of the fork-lift truck.
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10. A fork-lift truck comprising:
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a hydraulic system; a load carrier; at least one hydraulic pressure detection device arranged to generate a hydraulic pressure signal P corresponding to a hydraulic pressure in at least a section of the hydraulic system; wherein the forklift truck further includes, or is in communication with an electronic load carrier unit arranged to receive said hydraulic pressure signal P, determine whether the hydraulic pressure signal P adopts a value within a predetermined value range Pval, determine if the load carrier of the forklift truck is at least partially supported by an external object not being part of the forklift truck or a fixed internal object of the fork-lift truck based on the determination whether the hydraulic pressure signal is within the predetermined value range Pval, and send an indication to an operator that the load carrier is supported by an external object or a fixed internal object of the fork-lift truck, if said load carrier is determined to be at least partially supported by an external object or a fixed internal object of the fork-lift truck. - View Dependent Claims (11, 12, 17)
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13. A fork-lift truck comprising:
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a hydraulic system; a load carrier; at least one hydraulic pressure detection device arranged to determine a hydraulic pressure signal P corresponding to a hydraulic pressure in at least a section of the hydraulic system; wherein the forklift truck further comprises, or is in communication with, an electronic load carrier unit arranged to receive said hydraulic pressure signal P, determine whether the hydraulic pressure signal P adopts a value within a predetermined value range Pval, determine if a load carrier of the forklift truck is at least partially supported by an external object not being part of the forklift truck or a fixed internal object of the fork-lift truck based on the determination whether the hydraulic pressure signal is within the predetermined value range Pval; and a control unit arranged to control the movement of the load carrier based on the determination if a load carrier of the forklift truck is at least partially supported by an external object not being part of the forklift truck or a fixed internal object of the fork-lift truck. - View Dependent Claims (14, 15, 16)
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Specification