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High-accuracy vertical axis inclination angle measurement system and calibration method thereof

A measurement system and high-precision technology, applied in measurement devices, inclination measurement, mapping and navigation, etc., can solve problems such as rapid deployment of unfavorable measurement systems, motorized measurement, and long measurement preparation time, and achieve rapid deployment of equipment and reduced cost. devices, feasible and reliable results

Active Publication Date: 2014-01-01
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

However, before the start of the measurement work, it is necessary to adjust the level and the orthogonality of the autocollimator. The advantage of this method is that the results are true and accurate. The disadvantage is that the measurement preparation time is too long, which is not conducive to the rapid deployment and mobile measurement of the measurement system in engineering. requirements

Method used

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  • High-accuracy vertical axis inclination angle measurement system and calibration method thereof
  • High-accuracy vertical axis inclination angle measurement system and calibration method thereof
  • High-accuracy vertical axis inclination angle measurement system and calibration method thereof

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Embodiment Construction

[0030] The TV autocollimator is vertically and fixedly installed on the vehicle base of the photoelectric theodolite, and a plane reflection device (level) is placed on the ground to provide a horizontal base for the system. When the impact of the moment of inertia and wind force generated by the movement will drive the shaking and deformation of the car body, the crosshairs reflected by the mercury level will be imaged on the CCD.

[0031] According to the characteristics of the optical path of the non-contact measurement system, after the system is installed and debugged, the relative position of the absolute zero position of the azimuth encoder of the photoelectric theodolite and the crosshair of the TV autocollimator has been determined, and the TV autocollimator can be used. The dynamic leveling and deformation errors of the photoelectric theodolite (that is, the vertical axis tilt error of the theodolite) are measured. When the attitude of the base of the theodolite chan...

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Abstract

The invention provides a high-accuracy vertical axis inclination angle measurement system and a calibration method thereof. The high-accuracy vertical axis inclination angle measurement system comprises a vehicle-mounted platform, a photoelectric theodolite, a television auto-collimator and a plane reflecting device, wherein the photoelectric theodolite is fixedly arranged on the vehicle-mounted platform and carries a first imaging device; the television auto-collimator carries a second imaging device; the plane reflecting device is positioned right below the television auto-collimator and is fixed relative to the ground; the television auto-collimator is vertically fixed below a base of the photoelectric theodolite. The calibration method comprises the following steps: coarsely leveling the photoelectric theodolite; starting the television auto-collimator; arranging a collimator which is horizontally placed at the same horizontal position of the photoelectric theodolite; inclining the vehicle-mounted platform; rotating an azimuth axis of the photoelectric theodolite; and re-inclining the vehicle-mounted platform. By virtue of the high-accuracy vertical axis inclination angle measurement system and the calibration method thereof, the system structure is simplified, and the efficiency of vertical axis inclination angle measurement is improved.

Description

technical field [0001] The invention relates to a vertical axis inclination measurement system and a calibration method thereof, which are particularly suitable for vertical axis inclination measurement in a non-landing working mode. Background technique [0002] The vertical axis inclination measurement is mainly used for the non-ground measurement technology of the photoelectric theodolite. The vertical axis inclination directly affects the measurement accuracy of the photoelectric theodolite to the target. The conventional photoelectric theodolite adopts the landing mode. The current leveling method can make the vertical axis error of the theodolite adjusted to below 3 ", and the comprehensive measurement error of the theodolite can reach below 10 ". When the non-landing working mode is used, the theodolite always has a large vertical axis error due to the rigidity and clearance of the car body support mechanism, and the error will continue to change with external disturb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C1/02G01C9/02G01C25/00
CPCG01C1/02G01C9/00G01C25/00
Inventor 江波郝伟郑志奇田雁靳虎敏
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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