Method for determining parameters of road geometric elements and roadside characteristics

FIELD: physics.

SUBSTANCE: horizontal and vertical survey (HVS) of the controlled road area, is performed in the claimed method by terrestrial or mobile scanner surveying in the forward and backward direction, where the base stations GPS are the HVS reference points, placed on the road curb side, as well as the solid points on the curb sides of the roadway in the form of the traffic sign pole bases and the road arrangement elements. The terrestrial or mobile laser scanning of the controlled area is performed on the HVS reference points, resulting in determining the spatial coordinates of axes X, Y, Z of the laser beam reflection points from the roadway surface and the HVS reference points, that are identified in the scans. The scan is received, the scan results are transmitted to the PC, and the scans are registered therein by using the computer program, the actual digital dot three-dimensional (3D) model of the road and the roadside is received, then the route photographing of the controlled section of the roadway and the adjacent territory is performed to the width of 200 metres of the road axis in the forward and backward direction on the basis of the unmanned aircraft. The photographing results are transmitted to the PC, the orthophotos are registered therein by using the computer program and the digital photogrammetric model construction of the road surface and the adjacent territory is made. Its spatial data are transformed according to the HVS reference points into the data of the actual digital vector three-dimensional (3D) model, and the integrated realistic digital vector three-dimensional (3D) model of the controlled raod section and the roadside is received, the standard three-dimensional model of the road and the roadside is modelled in the same program. It is aligned according to the same HVS reference points with the received integral realistic digital vector three-dimensional (3D) model of the road and the roadside. Then the longitudinal sections are formed with the given increments, the differences are automatically recognized between the actual values of the controlled geometric element parameters of the integral realistic digital vector three-dimensional (3D) model and the values of the standard three-dimensional model of the controlled road and roadside section, comparing the received data, the linear geometric parameters of the road and the roadside are determined on the surface of the measured layer required for the construction or reconstruction of roads.

EFFECT: defining the reliable and accurate parameter values of the geometric road elements and the roadside characteristics by using the laser scanning technology.

3 dwg

 



 

Same patents:

FIELD: measurement equipment.

SUBSTANCE: method consists in measurement of coordinates of points with the help of a tachometer, prisms of which are fixed on "П"-shaped brackets installed on rails. The tachometer is installed in the span of the gantry rail so that in its visibility zone there are several points n1…nk and c1…ck, arranged at both rail lines. After measurements the tachometer is reinstalled into a new position from the original one. From this position of the tachometer they again determine coordinates of the points nk and ck, and using them, they define the coordinates of the new tachometer's position. Then prisms with brackets are serially fixed in points nk+1…nm and ck+1…cm, arranged along rail lines, their coordinates are measured, measurement results are processed, and actual planned-high-altitude position of the gantry rail is determined.

EFFECT: increased accuracy of measurement of parameters of planned-high-altitude position of a gantry rail in span zones that are unavailable for measurement of parameters with optic and mechanical means of measurement.

2 dwg

FIELD: physics.

SUBSTANCE: method comprises the following steps: guiding the observation axis onto an object; obtaining images of the object on measurement planes, the measurement planes being orthogonal to the optical axes from the centres of two identical optical devices spaced apart on a known base; taking measurements on the planes through points of projections of the optical axes of the measurement axes of coordinates parallel to the base; measuring positions of boundary points of images of the object from the centres of projections of optical axes; calculating the distance to the object using the size of the base as a component part of the reference parameter, wherein the size of the base and the distance from the centres of optical devices to the measurement planes are controlled. Calculations are carried out using, as a reference parameter, the product of the length of the base and the distance from the centres of optical devices to the measurement planes.

EFFECT: high accuracy and reliability of determining distance and sizes of objects based on results of stereoscopic measurements, design of a device which increases the quality of using viewing navigation equipment, reliability and comfort in sailing ships in the near range.

2 cl, 1 dwg

FIELD: physics.

SUBSTANCE: proposed device comprises laser range-finder and target fixed in brackets mounted on opposite gantry rails. "П"-like brackets have their vertical flanges spaced apart for more than rail head width to make 70…160 mm. Every bracket is provided with position retainer made up of L-like clamp to be pressed against rail head and fitted into opening arranged along horizontal flange, and bolt fitted into one of said flange to interact with vertical wall of said clamp. Rail head size scale is applied on bracket horizontal flange. Laser range-finder incorporates target sighting device secured on horizontal flange of one of said brackets. Target is secured vertically on flange of the other bracket. Device to guide laser range-finder to target and target bracket are provided with levels in two mutually perpendicular directions along and across rails. Linear sizes scale is applied on target in vertical direction.

EFFECT: higher accuracy of measurements and safety.

4 cl, 6 dwg

The invention relates to the field of instrumentation, in particular to the manufacture of protective cases measuring devices, such as rangefinder

FIELD: physics.

SUBSTANCE: proposed device comprises laser range-finder and target fixed in brackets mounted on opposite gantry rails. "П"-like brackets have their vertical flanges spaced apart for more than rail head width to make 70…160 mm. Every bracket is provided with position retainer made up of L-like clamp to be pressed against rail head and fitted into opening arranged along horizontal flange, and bolt fitted into one of said flange to interact with vertical wall of said clamp. Rail head size scale is applied on bracket horizontal flange. Laser range-finder incorporates target sighting device secured on horizontal flange of one of said brackets. Target is secured vertically on flange of the other bracket. Device to guide laser range-finder to target and target bracket are provided with levels in two mutually perpendicular directions along and across rails. Linear sizes scale is applied on target in vertical direction.

EFFECT: higher accuracy of measurements and safety.

4 cl, 6 dwg

FIELD: physics.

SUBSTANCE: method comprises the following steps: guiding the observation axis onto an object; obtaining images of the object on measurement planes, the measurement planes being orthogonal to the optical axes from the centres of two identical optical devices spaced apart on a known base; taking measurements on the planes through points of projections of the optical axes of the measurement axes of coordinates parallel to the base; measuring positions of boundary points of images of the object from the centres of projections of optical axes; calculating the distance to the object using the size of the base as a component part of the reference parameter, wherein the size of the base and the distance from the centres of optical devices to the measurement planes are controlled. Calculations are carried out using, as a reference parameter, the product of the length of the base and the distance from the centres of optical devices to the measurement planes.

EFFECT: high accuracy and reliability of determining distance and sizes of objects based on results of stereoscopic measurements, design of a device which increases the quality of using viewing navigation equipment, reliability and comfort in sailing ships in the near range.

2 cl, 1 dwg

FIELD: measurement equipment.

SUBSTANCE: method consists in measurement of coordinates of points with the help of a tachometer, prisms of which are fixed on "П"-shaped brackets installed on rails. The tachometer is installed in the span of the gantry rail so that in its visibility zone there are several points n1…nk and c1…ck, arranged at both rail lines. After measurements the tachometer is reinstalled into a new position from the original one. From this position of the tachometer they again determine coordinates of the points nk and ck, and using them, they define the coordinates of the new tachometer's position. Then prisms with brackets are serially fixed in points nk+1…nm and ck+1…cm, arranged along rail lines, their coordinates are measured, measurement results are processed, and actual planned-high-altitude position of the gantry rail is determined.

EFFECT: increased accuracy of measurement of parameters of planned-high-altitude position of a gantry rail in span zones that are unavailable for measurement of parameters with optic and mechanical means of measurement.

2 dwg

FIELD: optics.

SUBSTANCE: optical range finder system comprises a flat mirror with axial bore lying at an angle to the optical axis, lens, optosensor and semiconductor laser emitter. Lens is made in the form of positive lens and positive meniscus. Note here that maximum area of the entrance pupil is greater than or equal to sum of areas of the central zone of the entrance pupil for the radiating channel and the area equivalent to the area of circular pupil for the receiving channel.

EFFECT: technical result consists in reduction of overall dimensions and reduced parallax errors when measuring range.

1 cl, 3 dwg, 1 tbl

FIELD: physics.

SUBSTANCE: horizontal and vertical survey (HVS) of the controlled road area, is performed in the claimed method by terrestrial or mobile scanner surveying in the forward and backward direction, where the base stations GPS are the HVS reference points, placed on the road curb side, as well as the solid points on the curb sides of the roadway in the form of the traffic sign pole bases and the road arrangement elements. The terrestrial or mobile laser scanning of the controlled area is performed on the HVS reference points, resulting in determining the spatial coordinates of axes X, Y, Z of the laser beam reflection points from the roadway surface and the HVS reference points, that are identified in the scans. The scan is received, the scan results are transmitted to the PC, and the scans are registered therein by using the computer program, the actual digital dot three-dimensional (3D) model of the road and the roadside is received, then the route photographing of the controlled section of the roadway and the adjacent territory is performed to the width of 200 metres of the road axis in the forward and backward direction on the basis of the unmanned aircraft. The photographing results are transmitted to the PC, the orthophotos are registered therein by using the computer program and the digital photogrammetric model construction of the road surface and the adjacent territory is made. Its spatial data are transformed according to the HVS reference points into the data of the actual digital vector three-dimensional (3D) model, and the integrated realistic digital vector three-dimensional (3D) model of the controlled raod section and the roadside is received, the standard three-dimensional model of the road and the roadside is modelled in the same program. It is aligned according to the same HVS reference points with the received integral realistic digital vector three-dimensional (3D) model of the road and the roadside. Then the longitudinal sections are formed with the given increments, the differences are automatically recognized between the actual values of the controlled geometric element parameters of the integral realistic digital vector three-dimensional (3D) model and the values of the standard three-dimensional model of the controlled road and roadside section, comparing the received data, the linear geometric parameters of the road and the roadside are determined on the surface of the measured layer required for the construction or reconstruction of roads.

EFFECT: defining the reliable and accurate parameter values of the geometric road elements and the roadside characteristics by using the laser scanning technology.

3 dwg

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