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JPS5794610A - Laser leveling system - Google Patents

Laser leveling system

Info

Publication number
JPS5794610A
JPS5794610A JP17124080A JP17124080A JPS5794610A JP S5794610 A JPS5794610 A JP S5794610A JP 17124080 A JP17124080 A JP 17124080A JP 17124080 A JP17124080 A JP 17124080A JP S5794610 A JPS5794610 A JP S5794610A
Authority
JP
Japan
Prior art keywords
signal
holder
laser beam
sample
photodetector
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP17124080A
Other languages
Japanese (ja)
Inventor
Tetsuya Nakayama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Komatsu Ltd
Original Assignee
Komatsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Komatsu Ltd filed Critical Komatsu Ltd
Priority to JP17124080A priority Critical patent/JPS5794610A/en
Publication of JPS5794610A publication Critical patent/JPS5794610A/en
Pending legal-status Critical Current

Links

Classifications

    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Laser Beam Processing (AREA)

Abstract

PURPOSE:To execute a leveling control with high accuracy, by driving a work actuator by a signal which has added a displacement signal from an actuator displacement detector, and a deviation signal of height of a laser beam added as a target value and height of a work machine. CONSTITUTION:When a laser beam 2 projected from a projector 1 having a rotational period T is photodetected by a photodetector 4, a signal corresponding to deviation of a photodetecting position of the laser beam 2 in the photodetector 4, that is to say, a height deviation signal of a work machine 5 is obtained whenever the laser beam is photodetected, and on all such occasions, the deviation signal is held by a holder 23. That is to say, in the photodetector 4, the deviation signal is sampled by the timing by which a sampler 21 is turned on by a sample period T, and is held by the holder 23. Also, the sample 21 is turned on by synchronizing with the sample period T of the sample 21, a detection signal of a displacement detector 7 is sampled and is applied to a holder 24, and an output of an amplifier 25 and an output of the holder 24 are added, by which a target value of the relative position of a body and the work machine is calculated.
JP17124080A 1980-12-04 1980-12-04 Laser leveling system Pending JPS5794610A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17124080A JPS5794610A (en) 1980-12-04 1980-12-04 Laser leveling system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17124080A JPS5794610A (en) 1980-12-04 1980-12-04 Laser leveling system

Publications (1)

Publication Number Publication Date
JPS5794610A true JPS5794610A (en) 1982-06-12

Family

ID=15919633

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17124080A Pending JPS5794610A (en) 1980-12-04 1980-12-04 Laser leveling system

Country Status (1)

Country Link
JP (1) JPS5794610A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4600997A (en) * 1983-05-09 1986-07-15 Spectra-Physics, Inc. Surveying system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4600997A (en) * 1983-05-09 1986-07-15 Spectra-Physics, Inc. Surveying system

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