US20020092184A1 - Mobile cruiser machine for forestry applications - Google Patents
Mobile cruiser machine for forestry applications Download PDFInfo
- Publication number
- US20020092184A1 US20020092184A1 US09/502,341 US50234100A US2002092184A1 US 20020092184 A1 US20020092184 A1 US 20020092184A1 US 50234100 A US50234100 A US 50234100A US 2002092184 A1 US2002092184 A1 US 2002092184A1
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- Prior art keywords
- machine
- mobile
- set forth
- mobile machine
- cruiser
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C15/00—Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00
- G01C15/002—Active optical surveying means
- G01C15/004—Reference lines, planes or sectors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S33/00—Geometrical instruments
- Y10S33/21—Geometrical instruments with laser
Definitions
- This invention relates generally to a mobile machine for applications at a forestry site and, more particularly, to a mobile cruiser machine for determining a set of parameters for a plurality of trees and terrain at the forestry site.
- the present invention is directed to overcoming one or more of the problems as set forth above.
- a mobile machine for determining information at a forestry site comprises a gimbal base mounted on the mobile machine, a rotating laser beam range detector mounted on the gimbal base so that the rotating laser beam maintains a horizontal plane, a position determining system mounted on the mobile machine, and a slope determining system located on the mobile machine and electrically connected to a set of gimbals on the gimbal base, the gimbals being adapted to sense a slope of the mobile machine.
- FIG. 1 is a diagrammatic illustration of a mobile cruiser machine suitable for use in the present invention
- FIG. 2 is a diagrammatic illustration of the mobile cruiser machine of FIG. 1 on a sloped surface
- FIG. 3 is a diagrammatic illustration of a top view of a mobile cruiser machine depicting orthogonal, horizontal axes;
- FIG. 4 is a diagrammatic illustration of a portion of a mobile cruiser machine which enables propulsion
- FIG. 5 is a diagrammatic illustration of a top view of a mobile cruiser machine scanning a tree with a rotating laser beam.
- an apparatus 100 is disclosed suitable for use in determining information at a forestry site 106 for harvesting of trees.
- the apparatus 100 is embodied as a mobile machine 102 .
- the mobile machine 102 is a mobile cruiser machine 104 , adapted to traverse the forestry site 106 efficiently and reliably.
- the mobile cruiser machine 104 of FIGS. 1 and 2 is illustrated in a certain manner, it is understood that many variations in the design and construction of the mobile cruiser machine 104 may be employed without deviating from the spirit and scope of the present invention.
- the mobile cruiser machine 104 has a narrow width and a low height, and is adapted for one operator.
- the low and narrow profile of the mobile cruiser machine 104 allows for traversal of a forestry site 106 which is too dense and rugged for traversal by other vehicles.
- the design of the mobile cruiser machine 104 as described below, allows for movement over rugged terrain.
- the mobile cruiser machine 104 includes a primary power source 402 , preferably an engine 404 , a set of ground engaging members 406 drivably connected to the primary power source 402 , and means 410 for steering the mobile cruiser machine 104 .
- the set of ground engaging members 406 is a set of belted tracks 408 .
- the set of belted tracks 408 offers the advantages of excellent traction and reduced impact on the terrain.
- the present invention would work with other types of ground engaging members 406 , such as tires.
- the means 410 for steering the mobile cruiser machine 104 is a differential steering system 412 , such as commonly used with tracked machines.
- a differential steering system 412 typically operates by controlling the rate of rotation of each belted track separately, thus steering the machine.
- the means 410 for steering may employ other types of steering typically used with mobile machines, such as clutch-brake, rack-and-pinion, and the like.
- a gimbal base 108 mounted on the mobile cruiser machine 104 , includes a set of gimbals 118 .
- the gimbals 118 are adapted to maintain a constant orientation with respect to a horizontal plane as the mobile cruiser machine 104 traverses the forestry site 106 .
- the gimbals 118 are adapted to sense a slope of the mobile cruiser machine 104 , the slope of the mobile cruiser machine 104 being determinative of the slope of the terrain at the forestry site 106 .
- a set of slope value signals, generated by the gimbals 118 are delivered to a slope determining system to determine the slope of the terrain as the mobile cruiser machine 104 traverses the forestry site 106 .
- the gimbals 118 are arranged to sense a slope on two orthogonal, horizontal axes 302 , 304 .
- the gimbals 118 function as a two-axis inclinometer, thus providing a true indication of the slope of the terrain regardless of the heading and orientation of the mobile cruiser machine 104 .
- a rotating laser beam range detector 110 is mounted on the gimbal base 108 such that the rotating laser beam 112 maintains a horizontal plane.
- FIG. 1 depicts the mobile cruiser machine 104 on a level surface.
- FIG. 2 illustrates the mobile cruiser machine 104 on a sloped surface.
- the gimbal base 108 pivots to maintain the rotating laser beam range detector 110 at a horizontal position.
- the rotating laser beam 112 maintains a horizontal plane, although the mobile cruiser machine 104 is at a slope of ⁇ degrees.
- the rotating laser beam range detector 110 is adapted to transmit a rotating laser beam 112 either in a complete circle or across an arc to scan a desired field. As FIG. 5 illustrates, the rotating laser beam 112 scans the width of the trunk of a tree 502 .
- the rotating laser beam range detector 110 is adapted to determine the range from the mobile cruiser machine 104 to the tree 502 .
- the rotating laser beam range detector 110 is adapted to determine the diameter of the trunk of the tree 502 at the height being scanned, using well known calculations based on the range and the scan angle. The diameter of the trunk of the tree 502 is indicative of the size of the tree 502 .
- a position determining system 114 mounted on the mobile cruiser machine 104 , is adapted to determine the position in geographical coordinates of the mobile cruiser machine 104 at the forestry site 106 . Using this information and the information from the rotating laser beam range detector 110 , the geographical coordinates of each tree of interest may be determined.
- a data storage system 120 located on the mobile cruiser machine 104 , is adapted to store the information gathered as the mobile cruiser machine 104 traverses the forestry site 106 .
- information gathered include, but are not limited to, the slope of the terrain, the numbers, sizes, locations, species, and conditions of trees, and information regarding obstacles, water bodies, and other features at the forestry site 106 which may affect harvesting operations.
- Information may be gathered automatically by sensing equipment, as described in the above examples, or may be observed and input manually by the operator of the mobile cruiser machine 104 . In the preferred embodiment, the information is gathered with respect to a terrain map embodied as software in the data storage system 120 .
- a means 122 for communicating located on the mobile cruiser machine 104 , is adapted to communicate the information stored in the data storage system 120 to a desired location, such as an office site (not shown).
- the means 122 for communicating may use any of a variety of technologies.
- the means 122 for communicating may be a communications system 124 , configured as a wireless communications link.
- the means 122 for communicating may be a data transfer medium, such as a CD, disk, or wired data link for direct transfer of the information.
- the mobile cruiser machine 104 is adapted to traverse the rugged and dense terrain of a forestry site 106 , and to gather information for subsequent harvesting of trees.
- the mobile cruiser machine 104 preferably is small and narrow profiled, thus being large enough to house one operator.
- the mobile cruiser machine 104 includes equipment for gathering and storing the information, including some information manually determined by the operator. Examples of information gathering equipment include, but are not limited to, range, size, and position determining equipment, data storage equipment, and communications equipment.
- the operator is responsible for traversing the forestry site 106 efficiently and completely.
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Operation Control Of Excavators (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Control Of Position, Course, Altitude, Or Attitude Of Moving Bodies (AREA)
Abstract
A mobile machine for determining information at a forestry site. The mobile machine includes a gimbal base mounted on the mobile machine, a rotating laser beam range detector mounted on the gimbal base so that the rotating laser beam maintains a horizontal plane, a position determining system mounted on the mobile machine, and a slope determining system located on the mobile machine and electrically connected to a set of gimbals on the gimbal base, the gimbals being adapted to sense a slope of the mobile machine.
Description
- This invention relates generally to a mobile machine for applications at a forestry site and, more particularly, to a mobile cruiser machine for determining a set of parameters for a plurality of trees and terrain at the forestry site.
- Before trees are harvested at a forestry site, it is typical to perform an operation known in the logging industry as cruising. Cruising involves scouting the forestry site to obtain information such as tree quantities, size, type, and condition, and other relevant data such as the condition of the terrain and ground throughout the site.
- Historically, cruising is performed by hiring professional consultants to traverse the forestry site and gather the information by manual means. Recent developments in technology have aided the cruisers, such as the development of handheld global position satellite system (GPS) units to determine location coordinates of the trees, handheld computers to enter and store the data, and the like.
- However, cruising remains an expensive, time-consuming, and inefficient method for gathering the needed data. In addition, typical cruising operations involves the cruisers traversing the forestry site by foot, thus requiring much time and labor.
- It is desired to provide a means to cruise a forestry site that is economical, efficient, and saves time and labor. In addition, it is desired to automate the information gathering processes of cruising to increase reliability and accuracy of the data gathered. Furthermore, it is desired to provide a mobile machine that is adapted to traverse the forestry site in an efficient manner, thus allowing an operator to gather information for forestry purposes with minimal time and labor.
- The present invention is directed to overcoming one or more of the problems as set forth above.
- In one aspect of the present invention a mobile machine for determining information at a forestry site is disclosed. The mobile machine comprises a gimbal base mounted on the mobile machine, a rotating laser beam range detector mounted on the gimbal base so that the rotating laser beam maintains a horizontal plane, a position determining system mounted on the mobile machine, and a slope determining system located on the mobile machine and electrically connected to a set of gimbals on the gimbal base, the gimbals being adapted to sense a slope of the mobile machine.
- FIG. 1 is a diagrammatic illustration of a mobile cruiser machine suitable for use in the present invention;
- FIG. 2 is a diagrammatic illustration of the mobile cruiser machine of FIG. 1 on a sloped surface;
- FIG. 3 is a diagrammatic illustration of a top view of a mobile cruiser machine depicting orthogonal, horizontal axes;
- FIG. 4 is a diagrammatic illustration of a portion of a mobile cruiser machine which enables propulsion; and
- FIG. 5 is a diagrammatic illustration of a top view of a mobile cruiser machine scanning a tree with a rotating laser beam.
- Referring to the drawings and the appended claims, an
apparatus 100 is disclosed suitable for use in determining information at aforestry site 106 for harvesting of trees. With particular reference to FIGS. 1 and 2, theapparatus 100 is embodied as amobile machine 102. More particularly, themobile machine 102 is amobile cruiser machine 104, adapted to traverse theforestry site 106 efficiently and reliably. Although themobile cruiser machine 104 of FIGS. 1 and 2 is illustrated in a certain manner, it is understood that many variations in the design and construction of themobile cruiser machine 104 may be employed without deviating from the spirit and scope of the present invention. - In the preferred embodiment, the
mobile cruiser machine 104 has a narrow width and a low height, and is adapted for one operator. The low and narrow profile of themobile cruiser machine 104 allows for traversal of aforestry site 106 which is too dense and rugged for traversal by other vehicles. The design of themobile cruiser machine 104, as described below, allows for movement over rugged terrain. - Referring to FIG. 4, the
mobile cruiser machine 104 includes aprimary power source 402, preferably anengine 404, a set ofground engaging members 406 drivably connected to theprimary power source 402, and means 410 for steering themobile cruiser machine 104. - In the preferred embodiment, and as illustrated in FIGS. 1 and 2, the set of ground
engaging members 406 is a set ofbelted tracks 408. The set ofbelted tracks 408 offers the advantages of excellent traction and reduced impact on the terrain. However, the present invention would work with other types ofground engaging members 406, such as tires. - Preferably, the
means 410 for steering themobile cruiser machine 104 is adifferential steering system 412, such as commonly used with tracked machines. Adifferential steering system 412 typically operates by controlling the rate of rotation of each belted track separately, thus steering the machine. Alternatively, themeans 410 for steering may employ other types of steering typically used with mobile machines, such as clutch-brake, rack-and-pinion, and the like. - Referring back to FIGS. 1 and 2, a
gimbal base 108, mounted on themobile cruiser machine 104, includes a set ofgimbals 118. Thegimbals 118 are adapted to maintain a constant orientation with respect to a horizontal plane as themobile cruiser machine 104 traverses theforestry site 106. In addition, thegimbals 118 are adapted to sense a slope of themobile cruiser machine 104, the slope of themobile cruiser machine 104 being determinative of the slope of the terrain at theforestry site 106. A set of slope value signals, generated by thegimbals 118, are delivered to a slope determining system to determine the slope of the terrain as themobile cruiser machine 104 traverses theforestry site 106. - In the preferred embodiment, as depicted in FIG. 3, the
gimbals 118 are arranged to sense a slope on two orthogonal,horizontal axes gimbals 118 function as a two-axis inclinometer, thus providing a true indication of the slope of the terrain regardless of the heading and orientation of themobile cruiser machine 104. - A rotating laser
beam range detector 110 is mounted on thegimbal base 108 such that the rotatinglaser beam 112 maintains a horizontal plane. FIG. 1 depicts themobile cruiser machine 104 on a level surface. However, FIG. 2 illustrates themobile cruiser machine 104 on a sloped surface. Thegimbal base 108 pivots to maintain the rotating laserbeam range detector 110 at a horizontal position. Thus, the rotatinglaser beam 112 maintains a horizontal plane, although themobile cruiser machine 104 is at a slope of θ degrees. - Referring to FIG. 5, the rotating laser
beam range detector 110 is adapted to transmit a rotatinglaser beam 112 either in a complete circle or across an arc to scan a desired field. As FIG. 5 illustrates, the rotatinglaser beam 112 scans the width of the trunk of atree 502. The rotating laserbeam range detector 110 is adapted to determine the range from themobile cruiser machine 104 to thetree 502. In addition, the rotating laserbeam range detector 110 is adapted to determine the diameter of the trunk of thetree 502 at the height being scanned, using well known calculations based on the range and the scan angle. The diameter of the trunk of thetree 502 is indicative of the size of thetree 502. - A
position determining system 114, mounted on themobile cruiser machine 104, is adapted to determine the position in geographical coordinates of themobile cruiser machine 104 at theforestry site 106. Using this information and the information from the rotating laserbeam range detector 110, the geographical coordinates of each tree of interest may be determined. - A
data storage system 120, located on themobile cruiser machine 104, is adapted to store the information gathered as themobile cruiser machine 104 traverses theforestry site 106. Examples of information gathered include, but are not limited to, the slope of the terrain, the numbers, sizes, locations, species, and conditions of trees, and information regarding obstacles, water bodies, and other features at theforestry site 106 which may affect harvesting operations. Information may be gathered automatically by sensing equipment, as described in the above examples, or may be observed and input manually by the operator of themobile cruiser machine 104. In the preferred embodiment, the information is gathered with respect to a terrain map embodied as software in thedata storage system 120. - A
means 122 for communicating, located on themobile cruiser machine 104, is adapted to communicate the information stored in thedata storage system 120 to a desired location, such as an office site (not shown). Themeans 122 for communicating may use any of a variety of technologies. For example, themeans 122 for communicating may be acommunications system 124, configured as a wireless communications link. Alternatively, themeans 122 for communicating may be a data transfer medium, such as a CD, disk, or wired data link for direct transfer of the information. - Industrial Applicability
- As an application of the present invention, the
mobile cruiser machine 104 is adapted to traverse the rugged and dense terrain of aforestry site 106, and to gather information for subsequent harvesting of trees. Themobile cruiser machine 104 preferably is small and narrow profiled, thus being large enough to house one operator. Themobile cruiser machine 104 includes equipment for gathering and storing the information, including some information manually determined by the operator. Examples of information gathering equipment include, but are not limited to, range, size, and position determining equipment, data storage equipment, and communications equipment. The operator is responsible for traversing theforestry site 106 efficiently and completely. - Other aspects, objects, and features of the present invention can be obtained from a study of the drawings, the disclosure, and the appended claims.
Claims (22)
1. A mobile machine for determining information at a forestry site for harvesting of trees, comprising:
a gimbal base mounted on the mobile machine;
a rotating laser beam range detector mounted on the gimbal base so that the rotating laser beam maintains a horizontal plane;
a position determining system mounted on the mobile machine; and
a slope determining system located on the mobile machine and electrically connected to a set of gimbals on the gimbal base, the gimbals being adapted to sense a slope of the mobile machine.
2. A mobile machine, as set forth in claim 1 , wherein the gimbals are adapted to sense a slope on two orthogonal, horizontal axes.
3. A mobile machine, as set forth in claim 1 , wherein the rotating laser beam range detector is adapted to determine a diameter of a trunk of each desired tree, the diameter of the trunk being indicative of a size of the tree.
4. A mobile machine, as set forth in claim 1 , wherein the position determining system is adapted to determine the location of each desired tree in geographical coordinates.
5. A mobile machine, as set forth in claim 1 , further including a data storage system for storing information determined at the forestry site.
6. A mobile machine, as set forth in claim 5 , further including means for communicating the information to a desired location.
7. A mobile machine, as set forth in claim 6 , wherein the means for communicating is a wireless communications link.
8. A mobile machine, as set forth in claim 6 , wherein the, means for communicating is a data transfer medium.
9. A mobile machine, as set forth in claim 1 , wherein the mobile machine is a mobile cruiser machine adapted in size to include one human operator.
10. A mobile machine, as set forth in claim 9 , wherein the mobile cruiser machine includes:
a primary power source to provide power for propulsion and for operating the mobile machine;
a set of ground engaging members drivably connected to the primary power source; and
means for steering the mobile machine.
11. A mobile machine, as set forth in claim 10 , wherein the primary power source is an engine.
12. A mobile machine, as set forth in claim 10 , wherein the set of ground engaging members is a set of belted tracks.
13. A mobile machine, as set forth in claim 12 , wherein the means for steering the mobile machine is a differential steering system connected to the set of belted tracks.
14. A mobile cruiser machine for gathering information at a forestry site for harvesting of trees, comprising:
a gimbal base mounted on the mobile cruiser machine;
a rotating laser beam range detector mounted on the gimbal base;
a position determining system mounted on the mobile cruiser machine;
a slope determining system located on the mobile cruiser machine and electrically connected to a set of gimbals on the gimbal base, the gimbals being adapted to sense a slope of the mobile cruiser machine; and
a data storage system located on the mobile cruiser machine for storing information gathered at the forestry site.
15. A mobile cruiser machine, as set forth in claim 14 , wherein the rotating laser beam range detector is mounted on the gimbal base so that the rotating laser beam maintains a horizontal plane.
16. A mobile cruiser machine, as set forth in claim 14 , wherein the gimbals are adapted to sense a slope of the terrain at the forestry site on two orthogonal, horizontal axes.
17. A mobile cruiser machine, as set forth in claim 14 , further including a communications system adapted to communicate the information to a desired location.
18. A mobile cruiser machine, as set forth in claim 14 , further including:
an engine to provide power for propulsion and for operating the mobile cruiser machine;
a set of ground engaging members drivably connected to the engine; and
means for steering the mobile cruiser machine.
19. A mobile cruiser machine, as set forth in claim 18 , wherein the set of ground engaging members is a set of belted tracks, and wherein the means for steering is a differential steering system connected to the set of belted tracks.
20. A mobile machine for cruising a forestry site to gather information for harvesting of trees, comprising:
a primary power source;
a set of ground engaging members drivably connected to the primary power source and adapted for providing propulsion of the mobile machine;
a gimbal base mounted on the mobile machine, the gimbal base having a set of gimbals attached;
a rotating laser beam range detector mounted on the gimbal base so that the gimbals maintain the rotating laser beam in a horizontal plane;
a position determining system located on the mobile machine;
a slope determining system located on the mobile machine and electrically connected to the set of gimbals, the gimbals being adapted to sense a slope of the mobile machine; and
means for communicating the information for harvesting of trees to a desired location.
21. A mobile machine, as set forth in claim 20 , further including a data storage system for storing the information for harvesting of trees.
22. A mobile machine, as set forth in claim 20 , wherein the primary power source is an engine, and wherein the set of ground engaging members is a set of rubber belted tracks.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/502,341 US6460260B1 (en) | 2000-02-10 | 2000-02-10 | Mobile cruiser machine for forestry applications |
CA002330828A CA2330828A1 (en) | 2000-02-10 | 2001-01-11 | Mobile cruiser machine for forestry applications |
SE0100390A SE523770C2 (en) | 2000-02-10 | 2001-02-08 | System and method for determining information for logging of trees |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/502,341 US6460260B1 (en) | 2000-02-10 | 2000-02-10 | Mobile cruiser machine for forestry applications |
Publications (2)
Publication Number | Publication Date |
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US20020092184A1 true US20020092184A1 (en) | 2002-07-18 |
US6460260B1 US6460260B1 (en) | 2002-10-08 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/502,341 Expired - Fee Related US6460260B1 (en) | 2000-02-10 | 2000-02-10 | Mobile cruiser machine for forestry applications |
Country Status (3)
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US (1) | US6460260B1 (en) |
CA (1) | CA2330828A1 (en) |
SE (1) | SE523770C2 (en) |
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US20030160974A1 (en) * | 2000-06-27 | 2003-08-28 | Michael Demeyere | Measurement of cylindrical objects through laser telemetry |
US6598692B2 (en) * | 2001-10-16 | 2003-07-29 | Self-Guided Systems, L.L.C. | Vehicle guidance-maintaining horizontal laser |
JP3735722B2 (en) * | 2003-07-07 | 2006-01-18 | 国立大学法人名古屋大学 | Unicycle for mobile observation |
JP3837552B2 (en) * | 2003-07-08 | 2006-10-25 | 国立大学法人名古屋大学 | Mobile optical environment measurement device |
US7865285B2 (en) * | 2006-12-27 | 2011-01-04 | Caterpillar Inc | Machine control system and method |
US9282693B2 (en) | 2013-02-20 | 2016-03-15 | Deere & Company | Data encoding with planting attributes |
US9668420B2 (en) | 2013-02-20 | 2017-06-06 | Deere & Company | Crop sensing display |
US11212962B2 (en) | 2013-02-20 | 2022-01-04 | Deere & Company | Field condition determination |
US9066465B2 (en) | 2013-02-20 | 2015-06-30 | Deere & Company | Soil compaction reduction system and method |
US10178828B2 (en) | 2013-02-20 | 2019-01-15 | Deere & Company | Per plant crop sensing resolution |
US9693503B2 (en) | 2013-02-20 | 2017-07-04 | Deere & Company | Crop sensing |
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GB1521638A (en) * | 1976-06-11 | 1978-08-16 | Ferranti Ltd | Inertial platforms |
US4267737A (en) * | 1978-12-04 | 1981-05-19 | The Bendix Corporation | Dual suspension gyroscopic device having powered gimbal support |
US4396942A (en) * | 1979-04-19 | 1983-08-02 | Jackson Gates | Video surveys |
US4497117A (en) | 1983-09-12 | 1985-02-05 | Wrobley A Ray | Slope compensating angle gauge |
US4593474A (en) * | 1984-11-05 | 1986-06-10 | Mayhew Thomas C | Survey vehicle |
SE457017B (en) * | 1986-02-04 | 1988-11-21 | Geotronics Ab | DEVICE FOR MEASURING THE DIMENSION OF SIGNIFICANT VERTICAL, CIRCUMSTANCES |
US4820041A (en) * | 1986-11-12 | 1989-04-11 | Agtek Development Co., Inc. | Position sensing system for surveying and grading |
US4800501A (en) * | 1986-11-24 | 1989-01-24 | Ivan Kinsky | Vehicle land navigating device |
JPH0827352B2 (en) * | 1988-02-22 | 1996-03-21 | トヨタ自動車株式会社 | Vehicle preceding vehicle identification device |
FR2630392A1 (en) * | 1988-04-26 | 1989-10-27 | Mancheron Daniel | CRAWLER VEHICLE FOR TRANSPORT OF LOADS AND / OR SUPPLY OF ENERGY IN AREAS DIFFICULT OF ACCESS OR DANGEROUS FOR MAN |
US5249157A (en) * | 1990-08-22 | 1993-09-28 | Kollmorgen Corporation | Collision avoidance system |
US5517419A (en) * | 1993-07-22 | 1996-05-14 | Synectics Corporation | Advanced terrain mapping system |
JPH1010233A (en) * | 1996-06-24 | 1998-01-16 | Mitsui Eng & Shipbuild Co Ltd | Method for laser obstruction detection and sensor therefor |
US5963733A (en) | 1996-11-26 | 1999-10-05 | Assisi Software Corporation | Method and system for simulating forest management |
US6113343A (en) * | 1996-12-16 | 2000-09-05 | Goldenberg; Andrew | Explosives disposal robot |
US5852493A (en) * | 1997-03-13 | 1998-12-22 | Spectra Precision, Inc. | Self-aligning laser transmitter having a dual slope grade mechanism |
US5844679A (en) * | 1997-04-11 | 1998-12-01 | Spectra Precision, Inc. | System for adjusting the orientation of a plane of laser light |
US5977534A (en) * | 1997-04-11 | 1999-11-02 | Spectra-Precision, Inc. | Laser transmitter incorporating target dither |
JP3316842B2 (en) * | 1998-08-06 | 2002-08-19 | 村田機械株式会社 | Automatic guided vehicle system and automatic guided vehicle guidance method |
-
2000
- 2000-02-10 US US09/502,341 patent/US6460260B1/en not_active Expired - Fee Related
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2001
- 2001-01-11 CA CA002330828A patent/CA2330828A1/en not_active Abandoned
- 2001-02-08 SE SE0100390A patent/SE523770C2/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
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SE0100390L (en) | 2001-08-11 |
SE523770C2 (en) | 2004-05-18 |
US6460260B1 (en) | 2002-10-08 |
SE0100390D0 (en) | 2001-02-08 |
CA2330828A1 (en) | 2001-08-10 |
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