Product
Patsnap Eureka
For R&D, Patsnap Eureka makes reading and utilizing patents & technical documents easy.
Patsnap Eureka AIR
Designed for self-driven R&D workflows. Generate viable solutions, solve complex R&D challenges, empower your innovation with AI.
Patsnap Eureka Materials
Designed for material experts only. Revolutionize your material R&D, from search, analyze, to developing new materials.
Feature
TechResearch
Generate reliable direction feasibility study reports for your R&D in just a few steps.
TechSeek
Discover and master advanced knowledge NOW. Basics, ideas, possibilities, all at once.
TechMind
As an expert in R&D Theories, TechMind can generates customized viable solutions instantly.
TechRisk
Analyze your overall solution with one click, know your potential R&D risks in advance.
TechMonitor
Get weekly tech updates, stay abreast of the latest tech innovations and key insights.
Patents
Literature
Hiro is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
40 results about "Gyrotheodolite" patented technology
Efficacy Topic
Property
Owner
Technical Advancement
Application Domain
Technology Topic
Technology Field Word
Patent Country/Region
Patent Type
Patent Status
Application Year
Inventor
In surveying, a gyrotheodolite (also: surveying gyro) is an instrument composed of a gyroscope mounted to a theodolite. It is used to determine the orientation of true north. It is the main instrument for orientation in mine surveying and in tunnel engineering, where astronomical star sights are not visible and GPS does not work.
Attitude testing apparatus and method based on autocollimator
ActiveCN105021211AContinuous attitude measurementMeet measurement needsMeasurement devicesAttitude testingAutocollimation
The invention relates to an attitude testing apparatus and method based on an autocollimator. The apparatus mainly comprises the autocollimator, an optical hexahedron, a double-shaft electronic level meter and a pedestal with a leveling function. The method comprises the following steps: putting the attitude testing apparatus on a firm base, allowing the autocollimator to collimate a reflecting surface of an object, then collimating the optical hexahedron with an autocollimation gyro theodolite and measuring the included angle between the apparatus and a true north azimuth reference; starting the autocollimator for recording and retrieving of continuous data of the attitude of the reflecting surface of the object and starting the double-shaft electronic level meter for recording and retrieving of continuous data of horizontal attitude; and after completion of recording and retrieving of the data, processing the data of the autocollimator and the double-shaft electronic level meter by using a data processing method for the attitude testing apparatus so as to eventually obtain continuous changes of the attitude of the reflecting surface of the object in a geographic coordinate system, thereby meeting demands of continuous absolute measurement.
Owner:TIANJIN NAVIGATION INSTR RES INST
Method for measuring posture angle of base cubic mirror based on gyro theodolite
InactiveCN104266649AAvoid mutual aimingAvoid occlusionNavigation by speed/acceleration measurementsClassical mechanicsMeasurement precision
The invention discloses a method for measuring the posture angle matrix of a base cubic mirror, relative to a geodetic coordinate system based on a gyro theodolite. The method comprises the following steps: firstly, measuring any two adjacent side surfaces of the base cubic mirror in an alignment manner by the gyro theodolite and an electronic theodolite respectively to obtain the azimuth angle and zenith distance of the gyro theodolite in the alignment direction and the zenith distance of the electronic theodolite in the alignment direction; secondly, calculating through a vertical relationship between the two surfaces to obtain the azimuth angle of the electronic theodolite in the alignment direction; finally, obtaining the posture angle matrix of the base cubic mirror, relative to the geodetic coordinate system. According to the method, one gyro theodolite is omitted, so that the cost is reduced; meanwhile, the mutual alignment between a general theodolite and the gyro theodolite is avoided, so that the measurement precision and efficiency are improved, and the light path shielding during mutual alignment under the complicated working condition is prevented.
Owner:BEIJING INST OF SPACECRAFT ENVIRONMENT ENG
Optical fiber gyroscope theodolite and north-seeking method thereof
The invention relates to an optical fiber gyroscope theodolite and a north-seeking method thereof. The optical fiber gyroscope theodolite comprises an optical fiber gyroscope and a theodolite, wherein the theodolite covers a total station. The optical fiber gyroscope is arranged on a horizontal rotating part of the theodolite; the normal of the closed light path of the optical fiber gyroscope is perpendicular to a horizontal rotating shaft of the theodolite; a theodolite base gear is arranged on the outer side of a theodolite base fixing part; the theodolite base gear is connected with a driving motor which is arranged on the horizontal rotating part of the theodolite through a gear set. The north-seeking method for the optical fiber gyroscope theodolite comprises the steps of dynamic north-seeking and static north-seeking. The optical fiber gyroscope theodolite is compact in structure, small in size, light in weight and suitable for being carried by a single person to be used in a complex terrain district. The instrument and the north-seeking method have the advantages of simplicity in operation, high rapidness, one-key north-seeking function, convenience in use and the like. In addition, the optical fiber gyroscope theodolite is wide in application range, is dual-purpose for the army and people and can be used for determination of north benchmark, mine and geodetic measurement, military survey and the like.
Owner:TIANJIN NAVIGATION INSTR RES INST +1
Measurement method for enhancing tunnel lateral direction penetrating accuracy
InactiveCN101281030AHigh precisionAvoid the defect of low positioning accuracyTheodolitesEngineeringGuide wires
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.
Owner:SHANGHAI TUNNEL ENGINEERING CO. LTD. +1
Calibration method for ship-referenced inertial navigation system
The invention belongs to the technical field of inertial navigation and relates to a calibration method for a ship-referenced inertial navigation system. The calibration method comprises the following steps: firstly, mounting a referenced inertial navigation device in a referenced inertial navigation cabin; mounting an auxiliary inertial navigation device on a deck with bow-and-stern line graduation marks; erecting a theodolite, and controlling the position of the theodolite to enable the theodolite to calibrate an azimuth reference mirror and bow-and-stern scribed lines on the auxiliary inertial navigation device; then connecting the auxiliary inertial navigation device, the referenced inertial navigation device and a data recording device; calibrating between the auxiliary inertial navigation and the bow-and-stern lines, as well as between the auxiliary inertial navigation device and a reference plane for data acquisition and installation error identification, finally, performing calibration compensation, and calculating to obtain calibrated navigation attitude values. By the adoption of the technical scheme, the referenced inertial navigation system can be successfully output onto a ship reference frame without special docking for a ship or north-seeking gyro theodolite equipment with relatively high price, and only the simple theodolite is required, so that the calibration cost can be lowered.
Owner:BEIJING AUTOMATION CONTROL EQUIP INST
Orienting theodolite based on satellite orientation
InactiveCN106323229AImprove antenna performanceImprove performanceSatellite radio beaconingTheodolitesSatellite antennasEngineering
The invention discloses an orienting theodolite based on satellite orientation. The orienting theodolite comprises a theodolite part, a tripod A (12), a tripod B (18), a target part, a main antenna (10), an auxiliary antenna (17), a receiver (11), an internal cable (20) and a communication cable (19). By utilizing the measures of improving the performance of satellite antennas, and improving the satellite orientation algorithms, and the like, the orientation precision with triple standard deviation reaches 50'' on a 10m base line and 10'' on a 50m base line, so that the use requirements in the fields of launching vehicle orientation, north basis establishment, railway construction and the like can be met. According to the orienting theodolite, only a set of satellite receiving parts are increased to a traditional theodolite, so that the equipment cost is far lower than that of traditional orientation equipment such as gyro theodolite with same functions of the orienting theodolite; furthermore, the orienting theodolite is high in reliability, easy to maintain and applicable to outdoor use and has relatively wide application prospects.
Owner:BEIJING INST OF CONTROL & ELECTRONICS TECH
Device for implementing rough north-seeking of gyroscope using electronic compass
InactiveCN101105398AAutomatically achieve rough north findingHigh repeatabilitySpeed measurement using gyroscopic effectsTheodolitesMotor driveProgrammable logic device
The invention relates to a device for realizing coarse north searching of gyroscope using electric compass, belonging to the technical filed of position and orientation of gyroscopic theodolite. The inventive method can realize automatic north searching, and improve the response speed and north searching precision of gyroscopic theodolite. The device comprises an electric compass, a digital signal processor, a complex programmable logic device, a motor driving module, a stepping motor, a junction box, a retarder, and a rotary platform, wherein the above components are sequentially connected, the digital signal processor can determine the direction of the stepping motor in accordance with the deviation between the north direction reflected by the angle value outputted from the electric compass and true north direction, and determine the operating speed of the stepping motor through the complex programmable logic device, and the digital signal processor is also connected with the gyroscopic theodolite via a gyroscope landing device. The invention is mainly used for manufacturing the device for realizing coarse north searching of gyroscope using electric compass.
Owner:TIANJIN UNIV
Automatic tracking proportional-integral-differential (PID) control system and method for gyrotheodolite to perform coarse north finding
InactiveCN101980095AReduce the impact of north-seeking measurementsHigh degree of automationSpeed measurement using gyroscopic effectsControllers with particular characteristicsProportional integral differentialControl system
The invention discloses an automatic tracking proportional-integral-differential (PID) control system and an automatic tracking PID control method for a gyrotheodolite to perform coarse north finding, which belong to the fields of positioning and orientation of the gyrotheodolite. A non-torque tracking reversal point method is used for performing automatic coarse north finding. By the automatic tracking PID control system and the automatic tracking PID control method for the gyrotheodolite to perform coarse north finding provided by the invention, coarse north finding can be performed in the full scale 360-degree range of the gyrotheodolite; the influence of anthropic factors on the north-finding measurement of the gyrotheodolite is reduced; and the automation degree of the north-finding of the gyrotheodolite is improved.
Owner:TIANJIN UNIV
Gyroscope correcting system and method based on astronomical azimuth
ActiveCN106949909ARotate at any angleImplement calibration workMeasurement devicesClassical mechanicsGyrotheodolite
The invention relates to the technical field of gyroscope correction and discloses a gyroscope correcting system based on an astronomical azimuth. The gyroscope correcting system comprises an astronomical observation pillar, a parallel light tube and a gyroscope placement device, wherein the gyroscope placement device is located on a connecting line between the astronomical observation pillar and the parallel light tube and is used for placing a to-be-corrected gyroscope and adjusting the to-be-corrected gyroscope in any angle on a horizontal plane. The invention further discloses a gyroscope correcting method based on the astronomical azimuth. The gyroscope correcting method comprises the following steps of carrying out centering adjustment on an optical center of a theodolite or a down-hanging type gyro theodolite and a mark of a backlight grid plate; and making comparison on an azimuth measured by virtue of the to-be-corrected gyroscope or the down-hanging type gyro theodolite and an zero degree azimuth or an astronomical azimuth of the parallel light tube, so as to make judgment. According to the system and the method, the astronomical azimuth of the parallel light tube is combined with the centering adjustment, so that the correcting precision is improved.
Owner:SHANGHAI INST OF MEASUREMENT & TESTING TECH
New gyro theodolite locking device
ActiveCN105021162ASimple structureEasy to operateSpeed measurement using gyroscopic effectsTheodolitesEngineeringGyrotheodolite
The present invention is a new gyro theodolite locking device, relates to the field of engineering measuring detection, and particularly relates to a new gyro theodolite locking device, comprising a base, the base is fixedly connected with a lifting device, a transition seat is arranged above the lifting device, the transition seat is provided with a convex plate, the convex plate is connected with a locking cup, the locking cup is a carrying platform, the upper end surface of the locking cup is provided with a groove, the lifting device is connected with a motor by input and output gears which are engaged with each other, the top of the convex plate is connected with a locking switch by a bolt, and the locking switch is connected with the motor by a connection line. The new gyro theodolite locking device has a simple structure, the motor and the locking switch are used for control of rising or descending of a gyroscope sensitive portion, and the new gyro theodolite locking device is simple in operation, safe and reliable.
Owner:西安航光仪器厂
Gyrotheodolite integrated with north and south seeking function and implementing method thereof
InactiveCN101451840AAchieve the purpose of orientationReduce designSpeed measurement using gyroscopic effectsTheodolitesElectrical polarityEngineering
The invention discloses a gyrotheodolite integrating north-finding and south-finding function and a method of realizing the same. The gyrotheodolite comprises a gyro power and a gyro motor; the gyro power supplies three phase alternating voltage or a one path direct voltage to the gyro motor; the gyrotheodolite is characterized that: the gyrotheodolite further comprises a controlling unit for controlling the phase sequence change of the three phase alternating voltage or controlling the polarity change of the one path direct voltage. The method comprises changing the phase sequence or polarity of the supplying power of the gyro motor in the gyrotheodolite to realize the positive rotation and reversing switch of the gyro motor, thereby realizing the switch of the north-finding and south-finding function of the gyrotheodolite. When the gyrotheodolite produced or remodeled by the invention is located, the gyrotheodolite is not affected by measuring controlling point set and the surrounding environment, that is to say it is measured at each environment, which solves the long-standing problem of affecting the measuring work in orientation of the gyrotheodolite.
Owner:CENT SOUTH UNIV
Combined measuring method based on two-point center-alignment model
Owner:THE PLA INFORMATION ENG UNIV
Combined measuring method based on three-point resection model
ActiveCN104330078ASimple methodSpecial data processing applicationsCompassesClassical mechanicsLaser tracker
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.
Owner:THE PLA INFORMATION ENG UNIV
Magnetic field direction measuring method
ActiveCN108871301AImplement testMeasure relative relationships in real timeCompassesGyrotheodoliteInstrumentation
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.
Owner:HARBIN INST OF TECH
Electromagnetic damper
InactiveCN108007478AReduce jitter defectsFast north seekNavigation by speed/acceleration measurementsStator coilSnubber
The invention relates to an electromagnetic damper. The damper comprises a damper stator, a damper rotor and a magnetic shielding cover. According to the electromagnetic damper, the damper rotor is installed on a gyro sensor device, the damper stator is installed at the corresponding position of the rotor, the stator is fixedly connected with a shell body, and an air-gap field is generated by electrifying a stator coil to generate electromagnetic attraction to the rotor, so that a magnetic core of the rotor moves towards the magnetic core of the stator to achieve vertical radial centering of the gyro sensor device. The problem that the gyro sensor device needs to be held and lowered again due to the fact that the swing range is excessive large, the jittering is serious, and the gyro sensordevice movement cursor trajectory is captured deviating from CCD in a lowering process of the gyro sensor device is solved. The electromagnetic damper has the advantages that the gyro sensor device can be lowered successfully at a time to speed up north seeking.
Owner:TIANJIN NAVIGATION INSTR RES INST
Method for controlling automatic lifting of gyro-theodolite sensitive part
InactiveCN101105397AQuick responseHigh repeatabilitySpeed measurement using gyroscopic effectsTheodolitesReciprocating motionElectric machinery
The invention belongs to invention relates to a method for controlling automatic lifting of a sensing unit of gyroscopic theodolite, belonging to the technical filed of position and orientation of gyroscopic theodolite. The inventive method can realize automatic landing and lifting of the sensing unit of gyroscopic theodolite, reduce the man-made impact on north seeking measurement, and improve the response speed, repetition accuracy and degree of automation of gyroscopic theodolite. The technical proposal of the invention comprises DSP sends pulse and direction signals to a motor driver, the driver controls the operation of a motor, the landing and lifting of the sensing unit of gyroscopic theodolite is controlled by the linear reciprocating movement of the motor, and the operation speed of the motor affects the oscillation amplitude of the sending unit of gyroscopic theodolite when searing north. The invention is mainly used for controlling the automatic lifting of a sensing unit of gyroscopic theodolite.
Owner:TIANJIN UNIV
North orientation reference device for self calibrating
ActiveCN108716922ASolve technical problemsAchieve calibrationMeasurement devicesReference deviceOrientation measurement
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.
Owner:PLA 92493 TROOP METERING TEST CENT
Method and system for calibrating parallelism of incongruous turning light pipe based on double-mirror splicing
ActiveCN113267146AAchieve high-precision calibrationGuaranteed stabilityUsing optical meansLight pipePlane mirror
The invention relates to a method and system for calibrating the parallelism of an incongruous turning light pipe based on double-mirror splicing. The method comprises the following steps: step 1, setting a system; step 2, adjusting azimuth angles and pitch angles of reflectors of the first plane mirror device and the second plane mirror device through the same high-precision gyro theodolite respectively, so that north orientation values L and pitch values I of the two reflectors are the same, and double-mirror splicing is realized; step 3, setting a to-be-measured incongruous reflex light tube, using the high-precision gyro theodolite in the step 2 to measure an orientation value L1 and a pitching value I1 of the reflector of the second plane reflector device, keeping the position of the high-precision gyro theodolite unchanged, rotating a sighting part, measuring an azimuth value L2 and a pitching value I2 of a reflector of the first plane reflector device by using a high-precision gyro theodolite through the incongruous reflex light tube to be measured, and calculating an azimuth error delta L and a pitching error delta I according to a formula 1: delta L = L1-L2-180 degrees and a formula 2: delta I = I1 + I2-2ia-180 degrees.
Owner:XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
Attitude testing device and method based on autocollimator
ActiveCN105021211BContinuous attitude measurementMeet measurement needsMeasurement devicesAttitude testingAutocollimation
The invention relates to an attitude testing apparatus and method based on an autocollimator. The apparatus mainly comprises the autocollimator, an optical hexahedron, a double-shaft electronic level meter and a pedestal with a leveling function. The method comprises the following steps: putting the attitude testing apparatus on a firm base, allowing the autocollimator to collimate a reflecting surface of an object, then collimating the optical hexahedron with an autocollimation gyro theodolite and measuring the included angle between the apparatus and a true north azimuth reference; starting the autocollimator for recording and retrieving of continuous data of the attitude of the reflecting surface of the object and starting the double-shaft electronic level meter for recording and retrieving of continuous data of horizontal attitude; and after completion of recording and retrieving of the data, processing the data of the autocollimator and the double-shaft electronic level meter by using a data processing method for the attitude testing apparatus so as to eventually obtain continuous changes of the attitude of the reflecting surface of the object in a geographic coordinate system, thereby meeting demands of continuous absolute measurement.
Owner:TIANJIN NAVIGATION INSTR RES INST
Gyro north finder field calibration device
ActiveCN108398141ARealize on-site calibrationEasy to operateMeasurement devicesLight pipeClassical mechanics
The invention discloses a gyro north finder field calibration device. Supporting regulating feet are fixedly arranged at the bottom of a main body seat; a datum mounting base is arranged at the upperpart of the main body seat; a parallel light pipe is mounted on the datum mounting base by a parallel light pipe regulating device; the parallel light pipe is mounted on a box body with a plane mirrorand a north datum lead-out block; a gyro theodolite is mounted at one side of the datum mounting base by a regulating supporting frame. According to the invention, the gyro theodolite is adopted to determine a north datum for the parallel light pipe, and thus, the gyro north finder field calibration device is convenient to operate and high in accuracy; the gyro theodolite and the parallel light pipe are of an integral structure, and thus, the gyro north finder field calibration device has the advantage of convenience for carrying and can implement field calibration of a gyro north finder; thenorth datum lead-out block leads out a plane and the north is determined for once by the gyro theodolite, calibration of other gyro north finders can be implemented, so that the measurement process is simplified, and detection efficiency is improved. The gyro north finder field calibration device is suitable to use as a gyro north finder field calibration device.
Owner:PLA 92493 TROOP METERING TEST CENT
A new type of locking and releasing device for gyro theodolite
ActiveCN105021162BSimple structureEasy to operateSpeed measurement using gyroscopic effectsTheodolitesEngineeringGyrotheodolite
The present invention is a new gyro theodolite locking device, relates to the field of engineering measuring detection, and particularly relates to a new gyro theodolite locking device, comprising a base, the base is fixedly connected with a lifting device, a transition seat is arranged above the lifting device, the transition seat is provided with a convex plate, the convex plate is connected with a locking cup, the locking cup is a carrying platform, the upper end surface of the locking cup is provided with a groove, the lifting device is connected with a motor by input and output gears which are engaged with each other, the top of the convex plate is connected with a locking switch by a bolt, and the locking switch is connected with the motor by a connection line. The new gyro theodolite locking device has a simple structure, the motor and the locking switch are used for control of rising or descending of a gyroscope sensitive portion, and the new gyro theodolite locking device is simple in operation, safe and reliable.
Owner:西安航光仪器厂
Magnetic Field Azimuth Measurement Method
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.
Owner:HARBIN INST OF TECH
Gyrotheodolite integrated with north and south seeking function and implementing method thereof
InactiveCN101451840BReduce designShorten the timeSpeed measurement using gyroscopic effectsTheodolitesElectrical polarityThree-phase
The invention discloses a gyrotheodolite integrating north-finding and south-finding function and a method of realizing the same. The gyrotheodolite comprises a gyro power and a gyro motor; the gyro power supplies three phase alternating voltage or a one path direct voltage to the gyro motor; the gyrotheodolite is characterized that: the gyrotheodolite further comprises a controlling unit for controlling the phase sequence change of the three phase alternating voltage or controlling the polarity change of the one path direct voltage. The method comprises changing the phase sequence or polarity of the supplying power of the gyro motor in the gyrotheodolite to realize the positive rotation and reversing switch of the gyro motor, thereby realizing the switch of the north-finding and south-finding function of the gyrotheodolite. When the gyrotheodolite produced or remodeled by the invention is located, the gyrotheodolite is not affected by measuring controlling point set and the surrounding environment, that is to say it is measured at each environment, which solves the long-standing problem of affecting the measuring work in orientation of the gyrotheodolite.
Owner:CENT SOUTH UNIV
A gyro theodolite detection device and a gyro theodolite detection method
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.
Owner:ARMY ENG UNIV OF PLA
Measurement method for enhancing tunnel lateral direction penetrating accuracy
InactiveCN100575871CHigh precisionAvoid the defect of low positioning accuracyTheodolitesEngineeringGuide wires
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.
Owner:SHANGHAI TUNNEL ENGINEERING CO. LTD. +1
A joint measurement method based on three-point resection model
ActiveCN104330078BSimple methodSpecial data processing applicationsCompassesClassical mechanicsLaser tracker
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.
Owner:THE PLA INFORMATION ENG UNIV
A northbound reference device for self-verification
ActiveCN108716922BEasy to achieve calibrationAvoid causing a northward datum shiftMeasurement devicesEngineeringReference device
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.
Owner:PLA 92493 TROOP METERING TEST CENT
A Calibration Method for Ship Reference Inertial Navigation System
Owner:BEIJING AUTOMATION CONTROL EQUIP INST
A field calibration device for gyro north finder
ActiveCN108398141BRealize on-site calibrationEasy to operateMeasurement devicesLight pipePlane mirror
The invention provides a field calibration device for a gyro north finder. Supporting adjustment feet are fixed at the bottom of the main body seat, and a reference mounting seat is provided on the upper part of the main body seat. A collimator is installed on the reference mounting seat through a collimator adjustment device. On the box body of the block, a gyro theodolite is installed on one side of the reference mount by adjusting the support frame. The present invention uses the gyro theodolite as the collimator to establish the north reference, so it is easy to operate and has high accuracy; because the gyro theodolite and the collimator are integral structures, it has the advantage of being easy to carry, and can realize the on-site calibration of the gyro north-seeking instrument; The lead-out plane of the reference lead-out block can be calibrated for other gyro north finders after one-time determination of the north direction by the gyro theodolite, which simplifies the measurement process and improves the detection efficiency. It is suitable to be used as an on-site calibration device for a gyro north finder.
Owner:PLA 92493 TROOP METERING TEST CENT
Fiber Optic Gyro Theodolite and Its North Finding Method
The invention relates to an optical fiber gyroscope theodolite and a north-seeking method thereof. The optical fiber gyroscope theodolite comprises an optical fiber gyroscope and a theodolite, wherein the theodolite covers a total station. The optical fiber gyroscope is arranged on a horizontal rotating part of the theodolite; the normal of the closed light path of the optical fiber gyroscope is perpendicular to a horizontal rotating shaft of the theodolite; a theodolite base gear is arranged on the outer side of a theodolite base fixing part; the theodolite base gear is connected with a driving motor which is arranged on the horizontal rotating part of the theodolite through a gear set. The north-seeking method for the optical fiber gyroscope theodolite comprises the steps of dynamic north-seeking and static north-seeking. The optical fiber gyroscope theodolite is compact in structure, small in size, light in weight and suitable for being carried by a single person to be used in a complex terrain district. The instrument and the north-seeking method have the advantages of simplicity in operation, high rapidness, one-key north-seeking function, convenience in use and the like. In addition, the optical fiber gyroscope theodolite is wide in application range, is dual-purpose for the army and people and can be used for determination of north benchmark, mine and geodetic measurement, military survey and the like.
Owner:TIANJIN NAVIGATION INSTR RES INST +1
Who we serve
- R&D Engineer
- R&D Manager
- IP Professional
Why Patsnap Eureka
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com