40 results about "Gyrotheodolite" patented technology

The invention provides a magnetic field direction measuring method which is used for calibrating an included angle relationship between a measured magnetic field direction and an earth coordinate system, and can realize calibration of an euler angle between a magnetic sensor and other sensors, a standard magnetic source magnetic field direction and the like. A set of standard positions of a magnetic measuring axis coordinate system and an earth coordinate system (or a celestial body coordinate system) is established, and a physical quantity tester for a vector magnetic sensor and an associatedearth coordinate system (or the celestial body coordinate system) is used for measuring associated physical quantity to construct a relationship with the earth coordinate system (or the celestial body coordinate system), and an included angle relationship between a measuring axis of the magnetic sensor and a measuring axis of a gyro theodolite or a star sensor and the like is measured by virtue of the relationship between earth magnetic fields and the earth coordinate system (or the celestial body coordinate system), so that the relationship between the coordinate system of the magnetic sensor and a coordinate axis euler angle of apparatuses such as the gyro theodolite or the star sensor is calibrated, and a relative relationship between a standard magnetic source coil magnetic axis and the earth coordinate system (or the celestial body coordinate system) is measured.

The invention relates to a gyro theodolite detection device which comprises a main control unit, a gyroscope host detection unit, a controller detection unit and a human-computer interaction unit, wherein the main control unit is respectively connected with the gyroscope host detection unit, the controller detection unit and the human-computer interaction unit; the main control unit is used for receiving an instruction from the human-computer interaction unit; the gyroscope host detection unit and the controller detection unit are controlled to detect, and the received signal is transmitted to a human-computer interaction module; the human-computer interaction unit is used for inputting an instruction and receiving, storing and displaying data transmitted by the main control unit; the gyroscope host detection unit is used for detecting the current and the rotating speed of a gyro motor and a photoelectric signal from a photoelectric sensor of a gyroscope and transmitting the detected signal to the main control unit; the controller detection unit is used for detecting the working states of a motor driver board and a control display board and transmitting the signal to the main control unit. The gyro theodolite detection device solves the problems of gyro theodolite detection means deficiency, difficulty in fault positioning and the like.

The invention provides a measuring method for enhancing the transverse penetrating precision of a channel. Based on the traditional hole guiding wire measurement, the method uses the spiral theodolite on part of the control points to increase the directional angle of the guiding edges and obtains the engineering coordinate of the control points in the data processing. The invention uses characteristic that the respective measuring results by the spiral theodolite of independence and non accumulation of the errors, which avoids the defects of low positioning precision of the control point caused by the continuous accumulation in the present measuring technology and significantly enhances the engineering coordinate precision of the control points, so that the invention can achieve the purpose of enhancing the transverse penetrating precision of a channel. The measuring method of the invention is extensively applied to the construction of sorts of channels, especially the over-long mountain-crossing and river-crossing channels with high penetrating precision.

The invention relates to a combined measuring method based on a three-point resection model and belongs to the technical field of engineering measurement. In the method, firstly a laser tracker is employed for respectively measuring true north orientations of three orientation points, and then a gyro theodolite is employed for measuring a horizontal angle and a vertical angle of the three orientation points. Coordinate of an original point of a coordinate system of the gyro theodolite in the coordinate system of the laser tracker, and then a conversion parameter of the coordinate system of the laser tracker relative to a true north coordinate system can be calculated according to the calculated original point and the coordinate of any orientation point, and finally the laser tracker is employed for measuring the coordinate value of a target point of an launching vehicle so that the orientation of a connecting line of the target point in the coordinate system of an instrument is back-calculated and the true north orientation of the connecting line of the target point is calculated according to the conversion parameter. By means of the three-point resection model, coordinate systems of the laser tracker and the gyro theodolite are integrated so that the true north orientation of the model launching vehicle is directly measured and obtained under the coordinate system of the laser tracker. The method is simple and easy to carry out.

The invention provides a north orientation reference device for self calibrating. A pair of distributed north orientation foundation seats are arranged on a foundation plane; collimators are mounted on the distributed north orientation foundation seats through a collimator adjusting mechanism; a reference plane mirror adjusting mechanism and a gyro theodolite mounting adjusting seat are arranged between the two distributed north orientation foundation seats. As the north orientation reference device adopts the reference plane mirror adjusting mechanism as a main north orientation reference, and adopts the center of an infinite target cross reticle produced through the two symmetrically distributed collimators as an auxiliary north orientation reference, in combination with the gyro theodolite mounting adjusting seat, the north orientation reference device can not only realize calibration of different models of gyro theodolites, but also realize mutual calibration of the north orientation references through the mutual comparison of the numerical values of the main reference and the auxiliary reference during north orientation measurement, and effectively avoids north orientation reference movement caused by misoperation and possible foundation deformation. The north orientation reference device is suitable for serving as a north orientation reference device for self calibrating.

The invention belongs to the technical field of inertial navigation, and relates to a calibrating method for a reference inertial navigation system of a ship. A method for calibrating a ship's reference inertial navigation system. First, the reference inertial navigation system is installed in the reference inertial navigation cabin; Calibrate the azimuth reference mirror and bow and stern markings on the auxiliary inertial navigation; then connect the auxiliary inertial navigation, reference inertial navigation and data acquisition device; then calibrate between the auxiliary inertial navigation and the bow and stern lines of the ship and the reference plane , carry out data collection and installation error identification, and finally carry out calibration compensation, and calculate the attitude value after calibration. The technical scheme of the present invention can smoothly output the navigation system of the reference inertial navigation system to the reference coordinate system of the ship, and does not need a special pier for the ship, and does not need a high-priced gyro theodolite device capable of finding north, but only needs a simple theodolite The device can save the calibration cost.