US20130245878A1 - Method and system for transporting material - Google Patents

Method and system for transporting material Download PDF

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Publication number
US20130245878A1
US20130245878A1 US13/874,706 US201313874706A US2013245878A1 US 20130245878 A1 US20130245878 A1 US 20130245878A1 US 201313874706 A US201313874706 A US 201313874706A US 2013245878 A1 US2013245878 A1 US 2013245878A1
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Prior art keywords
data processing
processing device
transport unit
detection device
transport
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US13/874,706
Inventor
Steffen Armbruster
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Primetals Technologies Germany GmbH
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Siemens AG
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Priority to US13/874,706 priority Critical patent/US20130245878A1/en
Assigned to SIEMENS AKTIENGESELLSCHAFT reassignment SIEMENS AKTIENGESELLSCHAFT ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ARMBRUSTER, STEFFEN
Publication of US20130245878A1 publication Critical patent/US20130245878A1/en
Assigned to PRIMETALS TECHNOLOGIES GERMANY GMBH reassignment PRIMETALS TECHNOLOGIES GERMANY GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SIEMENS AKTIENGESELLSCHAFT
Abandoned legal-status Critical Current

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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D1/00—Control of position, course or altitude of land, water, air, or space vehicles, e.g. automatic pilot
    • G05D1/02—Control of position or course in two dimensions
    • G05D1/021—Control of position or course in two dimensions specially adapted to land vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F9/00—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes
    • B66F9/06—Devices for lifting or lowering bulky or heavy goods for loading or unloading purposes movable, with their loads, on wheels or the like, e.g. fork-lift trucks
    • B66F9/075—Constructional features or details
    • B66F9/0755—Position control; Position detectors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
    • G01S13/76—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted
    • G01S13/767—Responders; Transponders
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/87—Combinations of sonar systems
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/28—Details of pulse systems
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D1/00—Control of position, course or altitude of land, water, air, or space vehicles, e.g. automatic pilot
    • G05D1/02—Control of position or course in two dimensions
    • G05D1/021—Control of position or course in two dimensions specially adapted to land vehicles
    • G05D1/0257—Control of position or course in two dimensions specially adapted to land vehicles using a radar
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D1/00—Control of position, course or altitude of land, water, air, or space vehicles, e.g. automatic pilot
    • G05D1/02—Control of position or course in two dimensions
    • G05D1/021—Control of position or course in two dimensions specially adapted to land vehicles
    • G05D1/0268—Control of position or course in two dimensions specially adapted to land vehicles using internal positioning means
    • G05D1/0274—Control of position or course in two dimensions specially adapted to land vehicles using internal positioning means using mapping information stored in a memory device
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/74—Systems using reradiation of electromagnetic waves other than radio waves, e.g. IFF, i.e. identification of friend or foe

Definitions

  • a method and a system for transporting material in industrial plants are provided, in particular in the basic goods or paper industries, at least one mobile transport means being detected using at least one data processing device.
  • mobile transport means such as forklift trucks or heavy load stacker trucks are used to transport material between manufacturing and/or storage units.
  • the operators of the transport means thereby generally have to detect the location for depositing or picking up material manually. Incorrect input or operating error can result in incorrect entries and even stoppages and incur significant costs.
  • An object is to avoid the disadvantages of material transport described above, in particular within an industrial unit.
  • the object is achieved by a method, wherein a detection device is connected to the transport means and emits signals and wherein signals are sent back to the detection device by response units, the detection device determining the position coordinates and position angle of the transport means using at least one reference coordinates system.
  • a material transport system having at least one data processing device and at least one detection device to detect at least one mobile transport means, the detection device being connected to a transport means and having means for sending and receiving signals and stationary response units being provided, which in particular receive signals from the detection device and send back signals, by means of which the detection device determines in particular the current position coordinates, the position angle and preferably also the current speed of the transport means, using at least one reference coordinates system.
  • the position coordinates, position angle and in some instances current speed are determined in real time or almost in real time.
  • a module for the preferably automatic calibration of the position coordinates of the transport means to a material-relevant point is provided. This allows particularly accurate material tracking even for different types of material, transport means and transport modes.
  • the data processing device has a module for supplementing the position coordinates with at least one area identifier. It is also expedient for the stationary data processing device to have a device for providing and preferably also verifying a storage inventory with discrete storage locations. This makes it possible to manage material and/or storage in such a manner that allows automatic identification of the locality by area or warehouse-wide for the transport of material.
  • the data processing device has a module for determining the type of storage of the material based on the position angle. This makes it possible to detect and track material and its type of storage automatically without requiring operator input.
  • the detection device is configured as a radar device, as this ensures particularly reliable and non-vulnerable detection of position coordinates, position angle or current speed of the transport means.
  • a data processing device connected to the transport means is connected to a device for the visual display of transport instructions or position and/or material information or has such a device as part of it. This makes transport instructions, warnings and/or information of any sort particularly easily accessible for an operator of the transport means.
  • FIG. 1 shows an exemplary illustration of a material transport system.
  • FIG. 2 shows a schematic illustration relating to a reference coordinates system and the position angle.
  • FIG. 1 shows a section of an industrial unit in which a material transport method and/or a material transport system is/are used.
  • the industrial unit may be subdivided into different areas, e.g. different buildings or surfaces, at least some of which may be in the open air.
  • a spatial subdivision can also be carried out on the basis of areas assigned to individual or more than one production or storage process.
  • the method or system for the transport of material may be used in conjunction with production, loading, storage and other units.
  • the embodiment described below uses the example of a storage warehouse bounded by the walls 5 .
  • Each point of the storage unit may be described uniquely by specifying its Cartesian coordinates.
  • the storage unit is subdivided into two areas 7 a , 7 b , each of which has a plurality of loading and unloading points or storage locations 8 a , 8 b .
  • the storage locations 8 a in the area 7 a are configured such that wound material 10 is preferably stored there.
  • the storage locations 8 b in the area 7 b in contrast are preferably configured for the storage of sheet material 9 .
  • Material 9 or 10 is transported by a mobile transport means 1 , i.e. by a heavy load stacker truck or a forklift truck for example, between the storage locations 8 a , 8 b and loading, production or other storage units, which are outside the boundaries 5 , i.e. in the example outside the walls 5 .
  • Transport means used in the basic goods and paper industries generally move faster than so-called AGVs (automated guided vehicles).
  • FIG. 1 shows a single reference point for the areas 7 a and 7 b . It is however also possible to define a specific reference point for each of the areas. One or a plurality of common and/or specific reference points may be provided for further areas. A mixture of common and specific reference points is also possible.
  • a detection device 12 is attached to the transport means 1 to determine the position coordinates of the transport means 1 and the material transported, deposited or picked up by it and the angle of approach.
  • Response units 6 are also positioned in a stationary manner in the industrial plant, such as transponders attached to the walls 5 .
  • Mobile transport means 1 are for example vehicles with drivers, such as stacker trucks or automatically controlled vehicles.
  • Transported material is for example rolls of paper or wound material such as coils in hot or cold 10 bundles or sheet material 9 , such as sheet metal stacked with pallets or for example split bundles on pallets.
  • the transport means 1 preferably has a data processing device, e.g. a host PC, which may be located for example inside the cabin of the transport means 1 .
  • This data processing device is linked wirelessly or by cable for example to the detection device 12 .
  • the data processing device of the transport means 1 is linked by a wireless connection 4 , e.g. wireless LAN, a wireless local network, to a stationary data processing device 2 .
  • the detection device 12 may alternatively or additionally be linked wirelessly to the stationary data processing device 2 at the same time.
  • the detection device 12 has a radar module, operating preferably in the ISM frequency band.
  • the detection device 12 thereby takes the role of a base station and locates the response units 6 arranged in the active range of the vehicle based on the radar principle.
  • the response units 6 are configured as transponders and are for example configured such that they respond in a specific manner to the base station.
  • the response units 6 are active components in respect of their action principle.
  • the detection device 12 determines the current position in the reference coordinates system continuously based on a plurality of feedback responses from one or a plurality of response units, as well as preferably also detecting the specific speed or current position angle of the transport means 1 or the material 9 , 10 preferably as well. Positions may also alternatively be determined using a visual detection device, the response units 6 being configured using reflective film or similar materials. Position determination based on the radar principle has proven particularly advantageous when used in the open air and when used in buildings of significant length.
  • FIG. 2 shows a transport means 1 and a storage location 8 .
  • a material pick-up point may be defined respectively for different transport means 1 and materials 9 or 10 , e.g. in relation to the tip of a mandrel in the case of heavy load stacker trucks or in relation to the center of the fork ends in the case of stacker trucks with forks.
  • the material pick-up point thereby does not generally correspond to the coordinates determined by the detection device 12 for its own position based on its mounting point on the transport means 1 . Calibration of the coordinates to a material-relevant point, i.e. for example the material pick-up point takes place automatically based on the selected transport means or material.
  • the current coordinates of the transport means 1 or the material 9 , 10 are determined with reference to the respective reference point 3 . Not only the planar position coordinates x and y but also the height z is thereby taken into account. The height z thereby preferably corresponds to the deposited height of the material 9 , 10 . Detecting the current position angle ⁇ of the transport means 1 in relation to the storage location, i.e. approaching from left, right, rear or front for example, determines the direction in which the material was or is deposited. It is therefore possible to detect the position of labels for example or for example to detect whether coils are stored with the winding direction to the left or right. This allows the transport of material without or largely without operator intervention and it is thereby ensured that material is supplied correctly for further processing in subsequent production units.
  • the stationary data processing device 2 is used to provide a full and correct storage inventory, in particular as operators involved in transportation for example do not have to input coordinates to describe material pick-up and/or unloading points.
  • Transport may be controlled via the data processing device 12 .
  • Transport instructions, position and/or material information can quickly be made accessible to operators by a data processing device connected to the transport means 1 and visual display means. Warnings of an incorrect material pick-up and/or deposit due to an operating error can thus be displayed immediately to the operator and corrected by said operator. If an operator deposits material incorrectly despite a warning, at least the incorrect location of the material deposit is recorded correctly in the system.
  • a module which supplements the position coordinates with at least one area identifier. This ensures that the method or transport system can also be used in large-scale industrial units with different areas, a plurality of boundaries, extensive or complex subdivision and/or a large number of production, loading, storage or other units.
  • the provided method and system for material transport allows unique verification of a storage location and the type of storage. There is no need for operator input for a complete description of material storage.

Abstract

A method and a system of transporting material are provided, wherein at least one mobile transport unit is detected by a detection device with a radar or laser detecting device. Position coordinates, position angles and speed of the transport unit are determined using a reference coordinate system and are transmitted to a stationary data processing device. A central material tracking with verification of storage locations is generated by the data processing device, wherein, particularly with use of the positing angle, a storage type for the material is automatically determined.

Description

    CROSS REFERENCE TO RELATED APPLICATIONS
  • This application is a divisional application of U.S. non-provisional application Ser. No. 10/535,038 filed May 12, 2005, which is the US national stage of International application no. PCT/DE2003/003566 filed Oct. 27, 2003, and claims the benefits thereof. The International application claims priority of German application no. 102 52 901.9 filed Nov. 12, 2002. All applications are incorporated by reference herein in their entirety.
    • FIELD OF THE INVENTION
  • A method and a system for transporting material in industrial plants are provided, in particular in the basic goods or paper industries, at least one mobile transport means being detected using at least one data processing device.
    • BACKGROUND OF THE INVENTION
  • In the basic goods or primary industry in particular, e.g. in sectors of industry where metal or steel are processed, or in the paper industry, mobile transport means such as forklift trucks or heavy load stacker trucks are used to transport material between manufacturing and/or storage units. The operators of the transport means thereby generally have to detect the location for depositing or picking up material manually. Incorrect input or operating error can result in incorrect entries and even stoppages and incur significant costs.
    • SUMMARY OF THE INVENTION
  • An object is to avoid the disadvantages of material transport described above, in particular within an industrial unit.
  • The object is achieved by a method, wherein a detection device is connected to the transport means and emits signals and wherein signals are sent back to the detection device by response units, the detection device determining the position coordinates and position angle of the transport means using at least one reference coordinates system. Further, the object is achieved by a material transport system, the material transport system having at least one data processing device and at least one detection device to detect at least one mobile transport means, the detection device being connected to a transport means and having means for sending and receiving signals and stationary response units being provided, which in particular receive signals from the detection device and send back signals, by means of which the detection device determines in particular the current position coordinates, the position angle and preferably also the current speed of the transport means, using at least one reference coordinates system.
  • The position coordinates, position angle and in some instances current speed are determined in real time or almost in real time.
  • Developments of the method and the material transport system are specified in the dependent claims and are described in more detail below with reference to exemplary embodiments.
  • A module for the preferably automatic calibration of the position coordinates of the transport means to a material-relevant point is provided. This allows particularly accurate material tracking even for different types of material, transport means and transport modes.
  • The data processing device has a module for supplementing the position coordinates with at least one area identifier. It is also expedient for the stationary data processing device to have a device for providing and preferably also verifying a storage inventory with discrete storage locations. This makes it possible to manage material and/or storage in such a manner that allows automatic identification of the locality by area or warehouse-wide for the transport of material.
  • The data processing device has a module for determining the type of storage of the material based on the position angle. This makes it possible to detect and track material and its type of storage automatically without requiring operator input.
  • The detection device is configured as a radar device, as this ensures particularly reliable and non-vulnerable detection of position coordinates, position angle or current speed of the transport means.
  • A data processing device connected to the transport means is connected to a device for the visual display of transport instructions or position and/or material information or has such a device as part of it. This makes transport instructions, warnings and/or information of any sort particularly easily accessible for an operator of the transport means.
  • Advantages of the method in particular will emerge in a similar manner to the advantages specified in relation to the material transport system.
  • Further advantages and details of the system or method will emerge from the description which follows of exemplary embodiments with reference to the drawings and in conjunction with the claims.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 shows an exemplary illustration of a material transport system.
  • FIG. 2 shows a schematic illustration relating to a reference coordinates system and the position angle.
    •  DETAILED DESCRIPTION OF THE INVENTION
  • FIG. 1 shows a section of an industrial unit in which a material transport method and/or a material transport system is/are used. The industrial unit may be subdivided into different areas, e.g. different buildings or surfaces, at least some of which may be in the open air. A spatial subdivision can also be carried out on the basis of areas assigned to individual or more than one production or storage process. The method or system for the transport of material may be used in conjunction with production, loading, storage and other units. The embodiment described below uses the example of a storage warehouse bounded by the walls 5.
  • Each point of the storage unit may be described uniquely by specifying its Cartesian coordinates. In the example the storage unit is subdivided into two areas 7 a, 7 b, each of which has a plurality of loading and unloading points or storage locations 8 a, 8 b. The storage locations 8 a in the area 7 a are configured such that wound material 10 is preferably stored there. The storage locations 8 b in the area 7 b in contrast are preferably configured for the storage of sheet material 9.
  • Material 9 or 10 is transported by a mobile transport means 1, i.e. by a heavy load stacker truck or a forklift truck for example, between the storage locations 8 a, 8 b and loading, production or other storage units, which are outside the boundaries 5, i.e. in the example outside the walls 5. Transport means used in the basic goods and paper industries generally move faster than so-called AGVs (automated guided vehicles).
  • The entire storage unit 5, 7 a, 7 b, 8 a and 8 b and the material 9 and 10 are mapped on a reference coordinates system with a reference point 3 by a data processing device, preferably a stationary data processing device 2. FIG. 1 shows a single reference point for the areas 7 a and 7 b. It is however also possible to define a specific reference point for each of the areas. One or a plurality of common and/or specific reference points may be provided for further areas. A mixture of common and specific reference points is also possible.
  • A detection device 12 is attached to the transport means 1 to determine the position coordinates of the transport means 1 and the material transported, deposited or picked up by it and the angle of approach. Response units 6 are also positioned in a stationary manner in the industrial plant, such as transponders attached to the walls 5.
  • Mobile transport means 1 are for example vehicles with drivers, such as stacker trucks or automatically controlled vehicles. Transported material is for example rolls of paper or wound material such as coils in hot or cold 10 bundles or sheet material 9, such as sheet metal stacked with pallets or for example split bundles on pallets.
  • The transport means 1 preferably has a data processing device, e.g. a host PC, which may be located for example inside the cabin of the transport means 1. This data processing device is linked wirelessly or by cable for example to the detection device 12. The data processing device of the transport means 1 is linked by a wireless connection 4, e.g. wireless LAN, a wireless local network, to a stationary data processing device 2. The detection device 12 may alternatively or additionally be linked wirelessly to the stationary data processing device 2 at the same time.
  • The detection device 12 has a radar module, operating preferably in the ISM frequency band. The detection device 12 thereby takes the role of a base station and locates the response units 6 arranged in the active range of the vehicle based on the radar principle. The response units 6 are configured as transponders and are for example configured such that they respond in a specific manner to the base station. The response units 6 are active components in respect of their action principle.
  • The detection device 12 determines the current position in the reference coordinates system continuously based on a plurality of feedback responses from one or a plurality of response units, as well as preferably also detecting the specific speed or current position angle of the transport means 1 or the material 9, 10 preferably as well. Positions may also alternatively be determined using a visual detection device, the response units 6 being configured using reflective film or similar materials. Position determination based on the radar principle has proven particularly advantageous when used in the open air and when used in buildings of significant length.
  • FIG. 2 shows a transport means 1 and a storage location 8. A material pick-up point may be defined respectively for different transport means 1 and materials 9 or 10, e.g. in relation to the tip of a mandrel in the case of heavy load stacker trucks or in relation to the center of the fork ends in the case of stacker trucks with forks. The material pick-up point thereby does not generally correspond to the coordinates determined by the detection device 12 for its own position based on its mounting point on the transport means 1. Calibration of the coordinates to a material-relevant point, i.e. for example the material pick-up point takes place automatically based on the selected transport means or material.
  • The current coordinates of the transport means 1 or the material 9, 10 are determined with reference to the respective reference point 3. Not only the planar position coordinates x and y but also the height z is thereby taken into account. The height z thereby preferably corresponds to the deposited height of the material 9, 10. Detecting the current position angle γ of the transport means 1 in relation to the storage location, i.e. approaching from left, right, rear or front for example, determines the direction in which the material was or is deposited. It is therefore possible to detect the position of labels for example or for example to detect whether coils are stored with the winding direction to the left or right. This allows the transport of material without or largely without operator intervention and it is thereby ensured that material is supplied correctly for further processing in subsequent production units.
  • The stationary data processing device 2 is used to provide a full and correct storage inventory, in particular as operators involved in transportation for example do not have to input coordinates to describe material pick-up and/or unloading points. Transport may be controlled via the data processing device 12. Transport instructions, position and/or material information can quickly be made accessible to operators by a data processing device connected to the transport means 1 and visual display means. Warnings of an incorrect material pick-up and/or deposit due to an operating error can thus be displayed immediately to the operator and corrected by said operator. If an operator deposits material incorrectly despite a warning, at least the incorrect location of the material deposit is recorded correctly in the system.
  • A module is provided, which supplements the position coordinates with at least one area identifier. This ensures that the method or transport system can also be used in large-scale industrial units with different areas, a plurality of boundaries, extensive or complex subdivision and/or a large number of production, loading, storage or other units.
  • The provided method and system for material transport allows unique verification of a storage location and the type of storage. There is no need for operator input for a complete description of material storage.

Claims (12)

I claim:
1. A method of transporting material, wherein at least one mobile transport unit is detected using at least one data processing device, the method comprising:
emitting signals by a detection device connected to a transport unit; and
sending signals back to the detection device by response units,
wherein the detection device determines position coordinates and a position angle of the transport unit using at least one reference coordinates system for verifying a storage location of material.
2. The method according to claim 1, wherein a current speed of the transport unit is determined.
3. The method according to claim 1, wherein the position coordinates of the transport unit are automatically calibrated to a material-relevant point.
4. The method according to claim 1, wherein the position coordinates are supplemented by at least one area identifier.
5. The method according to claim 1, wherein the data processing device determines a type of storage of the material from the position angle.
6. The method according to claim 1, wherein the detection device emits radar signals.
7. The method according to claim 1, wherein data are transmitted between the detection device and a data processing device connected to the transport unit.
8. The method according to claim 1, wherein data is transmitted between the detection device and/or a data processing device connected to the transport unit and a stationary data processing device.
9. The method according to claim 8, wherein the data are transmitted wirelessly.
10. The method according to claim 8, wherein material transport is controlled by the stationary data processing device and the data.
11. The method according to claim 8, wherein a storage inventory with discrete storage locations is verified and provided by the stationary data processing device and the data.
12. The method according to claim 1, wherein transport instructions, position, and/or material information is/are displayed visually using the data processing device connected to the transport unit.
US13/874,706 2002-11-12 2013-05-01 Method and system for transporting material Abandoned US20130245878A1 (en)

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DE10252901.9 2002-11-12
DE10252901A DE10252901A1 (en) 2002-11-12 2002-11-12 Multi-static sensor arrangement for object distance measurement has pulse generators receiving clock signals via common data bus to produce deterministic HF oscillator signal phase relationship
US53503805A 2005-05-12 2005-05-12
US13/874,706 US20130245878A1 (en) 2002-11-12 2013-05-01 Method and system for transporting material

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WO2018140471A1 (en) * 2017-01-24 2018-08-02 Oceaneering Internatiional, Inc. Automated guided vehicle and method of use

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US8457776B2 (en) 2013-06-04
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