Automatic collimation method of theodolite based on image recognition
A technology of image recognition and theodolite, which is applied in theodolite and other directions, can solve the problems of inability to achieve follow-up control, real-time control that does not reflect the real-time assembly requirements, etc., and achieve the effect of ensuring measurement stability and improving work efficiency
Inactive Publication Date: 2017-01-11
BEIJING INST OF SPACECRAFT ENVIRONMENT ENG
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Problems solved by technology
[0005] However, none of these existing control methods can achieve follow-up control, which is not enough to truly reflect the assembly requirements and perform real-time control
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[0031] like image 3 As shown, the equipment used in the automatic theodolite collimation measurement method based on image recognition of the present invention includes a miniature measurement camera, which is fixed at the eyepiece of the theodolite through a fixed tool, between the miniature measurement camera and the fixed tool and between the fixed tool and the eyepiece of the theodolite. The eyepieces are fastened with screws. The field of view of the electronic theodolite is observed through the measuring lens barrel of the electronic theodolite, and two kinds of calibrations are performed in turn when measuring, and the specific implementation methods are as follows:
[0032] (1) The calibration method of the conversion relationship (deflection coefficient and translation amount) between the image plane coordinate system of the image captured by the camera and the theodolite eyepiece crosshair observation coordinate system is:
[0033] Let p and q be the conversion rel...
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The invention discloses an automatic theodolite collimation measurement method based on image recognition. A measurement device of the method comprises an electronic theodolite internally provided with a drive motor, a miniature measurement camera and a fixed fixture, wherein the automatic collimation measurement of the electronic theodolite is guided by the miniature measurement camera, a transformational relation between an image plane coordinate system and a theodolite eyepiece reticule observation coordinate system and a relation between an electronic theodolite deflection angle quantity and a miniature measurement camera pixel quantity when a focal length is in a collimation observation state are calibrated, and collimation return light and an electronic theodolite eyepiece reticule and a deviation relation are automatically extracted until collimation is achieved. According to the automatic theodolite collimation measurement method adopted by the invention, an image recording and analyzing method is used for replacing a conventional human eye observation method, so that the measurement stability in the case of long-term measurement is ensured, and the measurement work efficiency is increased.
Description
technical field [0001] The invention belongs to the field of industrial measurement, in particular to a method for automatic collimation measurement of theodolites. Background technique [0002] Accuracy measurement is an important guarantee link for the reliable operation of satellites and on-board instruments. In order to ensure the normal flight and operation of the satellite, it is necessary to measure the geometric accuracy of the satellite's structure and shape and the instruments and equipment that require accuracy during the ground assembly, such as the earth sensors, sun and star sensors, inertial devices and other attitude-sensitive sensors on the satellite. Instruments; thrust components such as 10N thrusters and 490N engines; sensor communication equipment such as antennas and cameras. The device to be measured is generally characterized by an optical cube mirror that has been calibrated on the device under test, and the coordinate axis of the coordinate system ...
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IPC IPC(8): G01C1/04
CPCG01C1/04
Inventor 刘浩淼王伟杨再华易旺民陶力阮国伟段晨旭陈启威任春珍郭洁瑛刘笑于兆吉孙继鹏
Owner BEIJING INST OF SPACECRAFT ENVIRONMENT ENG