Back to results
US 2015/0092181 A1Published application
Measuring Method And Measuring Instrument
AssigneeTopcon Corporation
InventorNobuyuki Nishita
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeTopcon Corporation
InventorNobuyuki Nishita
Estimating the term…
The invention provides a measuring method for performing monitoring measurement on two or more objects to be measured by a measuring instrument, which comprises a telescope unit for sighting an object to be measured, a distance measuring unit for projecting a distance measuring light through the telescope unit and for measuring a distance to the object to be measured, an image pickup unit for taking an image by projecting a sighting light in sighting direction and for acquiring digital image, an angle detecting unit for detecting a directional angle in sighting direction of the telescope unit and an automatic sighting unit for carrying out automatic sighting on the object to be measured by the telescope unit, comprising a step of setting up a searching range, a light amount switch-over step of switching over a light amount of projected sighting light to a light amount for a short distance or for a long distance, a short distance searching step of searching the searching range as the light amount for short distance and of performing a coarse measurement on the objects to be measured as positioned at short distance, a long distance searching step of searching the searching range as the light amount for long distance and performing a coarse measurement on the objects to be measured as positioned at long distance and a precise measurement step of carrying out automatic sighting on all objects to be measured based on the result of coarse measurement of the short distance searching and on the result of coarse measurement of the long distance searching and of distance measurement and angle measurement on each of the objects to be measured.
A measuring method for performing monitoring measurement on two or more objects to be measured by a measuring instrument, which comprises a telescope unit for sighting an object to be measured, a distance measuring unit for projecting a distance measuring light through said telescope unit and for measuring a distance to said object to be measured, an image pickup unit for taking an image by projecting a sighting light in sighting direction and for acquiring digital image, an angle detecting unit for detecting a directional angle in sighting direction of said telescope unit and an automatic sighting unit for carrying out automatic sighting on said object to be measured by said telescope unit, comprising a step of setting up a searching range, a light amount switch-over step of switching over a light amount of projected sighting light to a light amount for a short distance or for a long distance, a short distance searching step of searching the searching range as the light amount for short distance and of performing a coarse measurement on the objects to be measured as positioned at short distance, a long distance searching step of searching the searching range as the light amount for long distance and performing a coarse measurement on the objects to be measured as positioned at long distance and a precise measurement step of carrying out automatic sighting on all objects to be measured based on the result of coarse measurement of said short distance searching and on the result of coarse measurement of said long distance searching and of distance measurement and angle measurement on each of the objects to be measured,
A measuring instrument, comprising a telescope unit for sighting an object to be measured, a distance measuring unit for projecting a distance measuring light through said telescope unit and for measuring a distance to said object to be measured, an image pickup unit for taking images in sighting direction and for acquiring digital image, an angle detecting unit for detecting a directional angle in sighting direction of said telescope unit, an automatic sighting unit for carrying out automatic sighting on said object to be measured by said telescope unit, an arithmetic processing part, and a storage part, wherein said distance measuring unit can change the light amount of the distance measuring light for short distance and for long distance, said arithmetic processing part rotates said telescope unit in horizontal direction and in vertical direction respectively with light amount for short distance and with light amount for long distance, scans in a predetermined range as set so as to include two or more objects to be measured, acquires digital images at the predetermined time interval so that there will be two or more images including the same object to be measured, detects the objects to be measured in said digital image, calculates a composite directional angle of said objects to be measured based on detection results of said angle detecting unit at the time of image acquisition and based on position of the image of the object to be measured in said digital image, makes said storage part store composite directional angle of the object to be measured as target value for automatic sighting by associating with each of the objects to be measured, and further, said arithmetic processing part performs masking processing based on composite directional angle acquired at short distance and restricts the acquisition of composite directional angles of the object to be measured as positioned at short distance in a case where a composite directional angle of the object to be measured is calculated by the light amount for long distance.
Dependencies are inferred from the claim text.