CN209978898U - Total station instrument for digital image centering - Google Patents
Total station instrument for digital image centering Download PDFInfo
- Publication number
- CN209978898U CN209978898U CN201920801788.4U CN201920801788U CN209978898U CN 209978898 U CN209978898 U CN 209978898U CN 201920801788 U CN201920801788 U CN 201920801788U CN 209978898 U CN209978898 U CN 209978898U
- Authority
- CN
- China
- Prior art keywords
- total station
- point
- ccd
- rotating shaft
- digital image
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Length Measuring Devices By Optical Means (AREA)
Abstract
The utility model discloses a total station for digital image centering, which comprises a tripod panel, wherein a tripod is arranged at the lower side of the tripod panel, and a leveling base is fixedly connected at the upper side of the tripod panel; an alignment part is arranged above the leveling base, a middle rotating shaft is arranged on a middle axis of the alignment part, and a CCD (charge coupled device) camera for automatic focusing is arranged in the middle rotating shaft; the middle rotating shaft penetrates through the leveling base and the tripod panel and extends to the lower side of the tripod panel; the bottom of CCD camera extends to the lower part of the bottom of the middle rotating shaft. The utility model discloses only need the flattening, need not accurate centering, reduce the operation degree of difficulty, improve work efficiency greatly.
Description
Technical Field
The utility model relates to a survey and drawing technical field, concretely relates to total powerstation of digital image centering.
Background
At present, the common centering mode of the total station comprises an optical mode and a laser mode, before the instrument is used for measuring, the instrument is required to be centered on a known point mark center and leveled, and the leveling instrument causes centering deviation, so that the centering and leveling requirements can be met only by repeatedly debugging for many times. Thus, even a skilled measuring person takes 5 to 6 minutes, and even a beginner needs to take more than half an hour, so that the preparation work efficiency at the early stage of the measuring work is low.
Although the instrument can perform horizontal coordinate measurement work as long as accurate leveling is performed without centering a mark center of a known point, the shooting range is only limited to be close to the known point below the base because the lens of the image shooting device is arranged in the instrument base, and the angle formed by the orientation point, the centering point and the known point cannot be measured; therefore, the instrument cannot measure the horizontal angle formed by the known point and two target points under the condition of not centering the mark center of the known point, so that the application is limited.
Disclosure of Invention
Aiming at the technical problem, the technical scheme provides the total station in digital image centering, which can effectively solve the problem.
The utility model discloses a following technical scheme realizes:
a total station for centering digital images comprises a tripod panel, wherein a tripod is mounted on the lower side of the tripod panel, and a leveling base is fixedly connected to the upper side of the tripod panel; an alignment part is arranged above the leveling base, a middle rotating shaft is arranged on a middle axis of the alignment part, and a CCD (charge coupled device) shooting device is arranged in the middle rotating shaft; the middle rotating shaft penetrates through the leveling base and the tripod panel and extends to the lower side of the tripod panel; the bottom of CCD camera extends to the bottom of the middle rotating shaft.
Furthermore, a hollow cavity is arranged inside the middle rotating shaft along the central axis, and an automatic focusing CCD (charge coupled device) shooting device is arranged in the hollow cavity.
Furthermore, the CCD camera adopts an automatic focusing system, and the automatic focusing system is an active and passive mixed system.
Furthermore, the bottom end of the CCD shooting device adopts a convex lens which protrudes to the bottom of the middle rotating shaft.
Furthermore, the CCD camera comprises a shooting key and a display screen which are in signal connection with the CCD camera.
Furthermore, the display screen comprises a digital operation interface, a shooting key is arranged on the digital operation interface, and the shooting key is in signal connection with the CCD shooting device.
Furthermore, the display screen adopts an LED touch display screen.
Furthermore, one side of the display screen is provided with a shooting key which is in signal connection with the CCD for shooting.
Further, the pixels of the CCD camera are not less than 100 ten thousand.
Furthermore, the vertical height of the CCD camera from a ground coordinate point is 50 cm to 200 cm.
A total station for centering digital images and a method for determining a horizontal angle thereof are disclosed, the total station for centering digital images comprises a centering component, the centering component is a CCD (charge coupled device) shooting device arranged in an inner cavity of a rotating shaft in a collimation part, the bottom end of the CCD shooting device extends to the lower side of a tripod panel, the total station is erected above a known point A, after the total station is leveled, the centering point of the total station is an A' point, and a real ∠ BAC horizontal angle value is solved by aiming at two known target points B and C respectively, and the specific operation steps are as follows:
(1) erecting a total station in the digital image pair above a known point A, and displaying that the known point A falls into the shooting range of a CCD (charge coupled device) shooting device on a display screen; after the total station is roughly leveled, a centering point A' of the total station is close to a known point A;
(2) accurately leveling the total station, horizontally rotating the whole total station collimation part, vertically rotating a telescope lens barrel of the collimation part to enable the lens barrel to accurately aim at a target point B, rotating a spiral locker to lock the collimation part and the lens barrel respectively, and measuring and storing the horizontal distance A 'B from a centering point A' of the total station to the target point B;
(3) opening a guide indicator lamp in a lens barrel of the total station, forming a red light spot B ' point on a target point B, loosening the lens barrel spiral locker, rotating the lens barrel to pull back the red light spot B ' towards the total station direction and enable the red light spot B ' to fall into the shooting range of the CCD (charge coupled device) camera, rotating the lens barrel spiral locker, locking the lens barrel, and shooting an image;
(4) in the shot image, the horizontal distance A 'A between the center point A' and the known point A by the total station is determined by the image technology: namely, a marker of a regular pattern is arranged on a known point A, the center point of the marker is overlapped with the center of the known point A, a certain distance of the known marker is R, digital pattern software identifies and determines R pixel in a digital image and A 'A pixel d, and the distance of A' A is as follows:
(5) digital graphic software in the total station identifies the geometric center of a red light spot B ', the center of the total station to a point A ' and the center of a known point A, and an angle value of ∠ B ' A ' A formed by connecting three points, wherein ∠ BA ' A is ∠ B ' A ' A as the point B is on an A ' B ' extension line;
(6) from the angular value of ∠ BA ' A and the distance of A ' B, A ' A obtained above, the horizontal distance of AB is determined:
when 0 degree<∠BA′A<At 180 deg., the points B ', A' and A enclose a triangle, according to the cosine theorem, the points B 'and A' are
When ∠ BA 'a is 180 °, point a is on the extension of a' B, then AB is a 'B + a' a;
when ∠ BA 'a is 0 °, point a is on the segment of a' B, then AB is a 'B-a' a;
(7) loosening the spiral locking device of the sighting part and the lens cone, horizontally rotating the whole body of the sighting part to enable the lens cone of the sighting part to aim at another target point C, and measuring and storing the horizontal distance A 'C from the centering point A' to the target point C of the total station and obtaining the horizontal distance AC from the known point A to the other target point C by adopting the same method of the steps (2) - (6);
(8) when the lens barrel of the sighting part rotates from the aimed target point B to the aimed target point C, the horizontal dial of the total station obtains the angle value of the horizontal angle ∠ BA' C;
(9) from the angular value of ∠ BA ' C and the above measured A ' B, A ' C, the horizontal distance of BC is determined:
when 0 degree<∠BA′C<When the angle is 180 degrees, the point A', the point B and the point C enclose a triangle, and according to the cosine theorem, the angle is
When ∠ BA 'C is 180 °, point a' is on the segment of BC, then BC is a 'B + a' C;
when ∠ BA 'C is 0 °, point a' is on the extension of BC, then BC is | a 'B-a' C |;
(10) an angle value of the true horizontal angle ∠ BAC is obtained from the horizontal distance of AB, AC and BC obtained as described above, and the angle value of the true horizontal angle ∠ BAC is determined as follows:
when the sum of the two sides is larger than the third side, the point A, the point B and the point C enclose a triangle, and according to the cosine theorem, the point A, the point B and the point C enclose a triangle
When AB + AC is BC, point a is on the segment of BC, ∠ BAC is taken 180 °;
when | AB-AC | ═ BC, point a is on the extension of BC, ∠ BAC takes 0 °.
Further, when a prism is used for measuring the horizontal distance from a target point to a centering point A' of the total-station instrument, a thickness delta parameter from the center of the prism to the target point is input into a software system of the total-station instrument in advance, and the delta parameter is added to each measured distance; for short range ranging, prism-free or reflector-free can be used, and this parameter need not be added.
Further, when the target points are more than three, the horizontal angle is measured by adopting a direction observation method: the degree is set to be zero when the starting target is aimed, and because the degree of a horizontal dial of the total station is expressed in a clockwise mode, the true horizontal angle value obtained by aiming the lens barrel of the sighting part at other target points in a clockwise rotating mode is gradually increased; if the latter horizontal angle value obtained by the method is smaller than the former horizontal angle value, the latter horizontal angle value is subtracted from 360 degrees to obtain a real horizontal angle value.
Furthermore, the marker is circular, R is the radius of the circle, or is marked as an equilateral triangle, R is the side length of the triangle, or is marked as a regular polygon, and R is the side length of the polygon.
Further, the method for determining the position of the center a' in the picture by the total station comprises the following steps: firstly shooting a digital image, then accurately rotating 180 degrees 00 'to shoot a digital image, and identifying a central point O of an overlapped area of the two digital images through digital graphic software, namely the position of the centering point A' in the shot image.
Advantageous effects
The utility model provides a total powerstation of digital image centering, compare with prior art, it has following beneficial effect:
(1) the CCD adopting the digital image technology is a centering device, a CCD digital image signal can be displayed on an instrument display screen, and the total station only needs to be erected above a known point for accurate leveling without accurate centering; the traditional early debugging means that the optical prism or the laser is used for alternately and repeatedly centering and leveling for many times and gradually approaches the known point centering is changed, the operation difficulty is reduced, and the working efficiency is greatly improved.
(2) The revolution axis of total powerstation increases below the tripod panel of fixed instrument, can make the convex lens camera lens visual angle of the cavity intracavity of revolution axis bigger, can shoot the red light spot that falls near the direction pilot lamp formation in the total powerstation tripod outside, provides the condition for horizontal angle measurement.
(3) The CCD camera adopts an automatic focusing system which is an active and passive mixed system; the active auxiliary light or ultrasonic emission system is an infrared stripe beam, and has good shooting effect on low contrast, weak light, thin lines and moving bodies; the passive emission-free system has a good effect on shooting transparent vitreous materials, the two are mixed and can be automatically switched and complementarily used, the strength of the two is exerted, the weakness is overcome, and the shape of the shot guide indication red light spot is clearer and more stable.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic cross-sectional view of a part of the central spindle according to the present invention.
Fig. 3 is a schematic view of the horizontal distance from the point a' to the target point measured and read by the total station of the present invention.
Fig. 4 is the utility model discloses well total powerstation rotates near the schematic diagram of direction light falling near the tripod behind the telescope lens cone.
Fig. 5 is the image schematic diagram that the total powerstation obtained in the utility model.
Fig. 6 is a schematic diagram of the point a' on the right side of the point a in the present invention.
Fig. 7 is a schematic view of the point a' on the upper side of the point a in the present invention.
Fig. 8 is a schematic view of the present invention in which point a' is located below point a.
Fig. 9 is a schematic diagram of the point a' on the line segment BC in the present invention.
Fig. 10 is a schematic diagram of the point a' on the extension line of BC in the present invention.
Fig. 11 is a schematic diagram of the point a on the extension line of BA' in the present invention.
Fig. 12 is a schematic diagram of the point a on the line segment of a' B in the present invention.
Fig. 13 is a schematic diagram of the point a on the line segment of BC in the present invention.
Fig. 14 is a schematic diagram of the point a on the extension line of BC in the present invention.
Fig. 15 is a schematic diagram of the position determination of the center point a' on the image by the total station in the present invention.
Reference numbers in the drawings: 1-handle, 2-bracket, 3-cross shaft, 4-lens cone, 41-sighting device, 42-sighting device, 5-display screen, 6-leveling base, 61-upper plate, 62-lower plate, 63-leveling screw, 7-tripod panel, 8-middle rotating shaft, 81-CCD camera, 811-CCD chip, 812-convex lens, 82-hollow cavity, 9-tripod, 10-prism and 11-fastener.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. The described embodiments are only some, but not all embodiments of the invention. Under the prerequisite that does not deviate from the design concept of the utility model, the ordinary person in the art should fall into the protection scope of the utility model to the various changes and improvements that the technical scheme of the utility model made.
Example (b):
as shown in fig. 1-2, the total station for digital image centering includes an aiming portion disposed at an upper side of the total station, a handle 1 disposed at a top of the aiming portion, a bracket 2 fixedly connected to a bottom of the handle 1, a lens barrel 4 rotatably connected between the brackets 2 through a cross shaft 3, collimators 41 and 42 fixedly connected to upper and lower sides of the lens barrel 4, and a display screen 5 mounted at a bottom of the bracket 2.
A leveling base 6 is arranged at the lower side of the collimation part, and the bottom of the leveling base 6 is fixedly connected with a tripod panel 7 through a fastener; a middle rotating shaft 8 is arranged on a middle axis of the collimation part, and the middle rotating shaft 8 penetrates through the leveling base 6 and the tripod panel 7 and extends to the lower side of the tripod panel 7; the middle rotating shaft 8 is fixedly connected with the tripod panel 7 and the lower plate 62 of the leveling base 6 through external threads on the fastener 11; a hollow cavity 82 is arranged in the middle rotating shaft 8 along the central axis, and an automatic focusing CCD (charge coupled device) shooting device 81 is arranged in the hollow cavity 82; the top of the CCD camera 81 is provided with a CCD chip 811; the pixels of the CCD chip 811 are not less than 100 ten thousand pixels. The bottom end of the CCD camera 81 extends to the bottom of the middle rotating shaft 8; a convex lens 812 is used at the bottom end of the CCD camera 81, and the convex lens 812 protrudes to the bottom of the central axis 8. The CCD camera 81 employs an auto-focus system, which is a hybrid system of active and passive types. The CCD camera 81 is connected with a shooting key and a display screen 5 through a lead signal.
The display screen 5 is an LED touch display screen, the display screen 5 comprises a digital operation interface, a shooting key is arranged on the digital operation interface, and the shooting key is in signal connection with the miniature CCD shooting device 81. (the connection mode between the display screen and the shooting device is the conventional connection mode in the field, the embodiment does not improve the connection mode, the prior art is adopted, and the description is omitted here)
A tripod 9 is movably arranged on the lower side of the tripod panel 7; in the embodiment, the periphery of the hinge is hinged. The tripod 9 is a telescopic tripod, so that after the tripod 9 is unfolded, the vertical height of the CCD camera 81 from a known point on the ground is 50 cm to 200 cm.
A total station for centering digital images and a method for determining a horizontal angle thereof are disclosed, the total station for centering digital images comprises a centering component, the centering component is a CCD (charge coupled device) shooting device arranged in an inner cavity of a rotating shaft in a collimation part, the bottom end of the CCD shooting device extends to the lower side of a tripod panel, the total station is erected above a known point A, after the total station is leveled, the centering point of the total station is an A' point, and a real ∠ BAC horizontal angle value is solved by aiming at two known target points B and C respectively, and the specific operation steps are as follows:
(1) erecting a total station in the digital image pair above a known point A, and displaying that the known point A falls into the shooting range of a CCD (charge coupled device) shooting device on a display screen; after the total station is roughly leveled, a centering point A' of the total station is close to a known point A;
(2) accurately leveling the total station, horizontally rotating the whole total station collimation part, vertically rotating a telescope lens barrel of the collimation part to enable the lens barrel to accurately aim at a target point B, rotating a spiral locker to lock the collimation part and the lens barrel respectively, and measuring and storing the horizontal distance A 'B from a centering point A' of the total station to the target point B;
as shown in fig. 3, when a prism is used to measure and store a horizontal distance from a target point to a center point a' of the total-station, a thickness δ parameter from the center of the prism to the target point is input into a software system of the total-station in advance, and the δ parameter is added to each measured distance; for short range ranging, prism-free or reflector-free can be used, and this parameter need not be added.
(3) Turning on a guide indicator lamp in a lens barrel of the total station, forming a red light spot B 'on a target point B, loosening the lens barrel spiral locker, and rotating the lens barrel to pull back the red light spot B' towards the total station to fall within the shooting range of the CCD camera, as shown in FIG. 4; rotating the lens cone spiral locker, locking the lens cone, and shooting an image;
(4) among the photographed images, the photographed image is shown in fig. 5; the horizontal distance A 'A between the center A' and the known point A of the total station is determined by an image technology: namely, a marker of a regular pattern is arranged on a known point A, the center point of the marker is overlapped with the center of the known point A, a certain distance of the known marker is R, digital pattern software identifies and determines R pixel in a digital image and A 'A pixel d, and the distance of A' A is as follows:
if the tag is circular, R is the radius of the circle; if the mark is an equilateral triangle, R is the side length of the triangle; if the label is a regular polygon, R is the polygon side length.
(5) Digital graphic software in the total station identifies the geometric center of a red light spot B ', the center of the total station to a point A ' and the center of a known point A, and an angle value of ∠ B ' A ' A formed by connecting three points, wherein ∠ BA ' A is ∠ B ' A ' A as the point B is on an A ' B ' extension line;
(6) from the angular value of ∠ BA ' A and the distance of A ' B, A ' A obtained above, the horizontal distance of AB is determined:
when 0 degree<∠BA′A<180°Then point B, point A' and point A enclose a triangle, according to the cosine theorem, thenAs shown in fig. 6-10.
When ∠ BA 'A is 180 deg., point A is on the extension of A' B, AB is A 'B + A' A, as shown in FIG. 11.
When ∠ BA 'a is 0 °, point a is on the segment of a' B, and AB is a 'B-a' a, as shown in fig. 12.
(7) Loosening the spiral locking device of the sighting part and the lens cone, horizontally rotating the whole body of the sighting part to enable the lens cone of the sighting part to aim at another target point C, and measuring and storing the horizontal distance A 'C from the centering point A' to the target point C of the total station and obtaining the horizontal distance AC from the known point A to the other target point C by adopting the same method of the steps (2) - (6);
(8) when the lens barrel of the sighting part rotates from the aimed target point B to the aimed target point C, the horizontal dial of the total station obtains the angle value of the horizontal angle ∠ BA' C;
(9) from the angular value of ∠ BA ' C and the above measured A ' B, A ' C, the horizontal distance of BC is determined:
when 0 degree<∠BA′C<When the angle is 180 degrees, the point A', the point B and the point C enclose a triangle, and according to the cosine theorem, the angle is
As shown in fig. 6-8 and 11-14.
When ∠ BA 'C is 180 °, a' is on the segment of BC, so BC is a 'B + a' C, as shown in fig. 9.
When ∠ BA 'C is 0 °, point a' is on the extension of BC, so BC is | a 'B-a' C |, as shown in fig. 10.
(10) An angle value of the true horizontal angle ∠ BAC is obtained from the horizontal distance of AB, AC and BC obtained as described above, and the angle value of the true horizontal angle ∠ BAC is determined as follows:
when the sum of the two sides is larger than the third side, the point A, the point B and the point C enclose a triangle, and according to the cosine theorem, the point A, the point B and the point C enclose a triangle
As shown in fig. 6-12.
When AB + AC is BC, point a is on the segment of BC, ∠ BAC is taken 180 °, as shown in fig. 13.
When AB-AC is BC, point a is on the extension of BC, ∠ BAC is taken at 0 °, as shown in fig. 14.
And when the target points are more than three, measuring the horizontal angle by adopting a direction observation method: the degree is set to be zero when the starting target is aimed, and because the degree of a horizontal dial of the total station is expressed in a clockwise mode, the true horizontal angle value obtained by aiming the lens barrel of the sighting part at other target points in a clockwise rotating mode is gradually increased; if the latter horizontal angle value obtained by the method is smaller than the former horizontal angle value, the latter horizontal angle value is subtracted from 360 degrees to obtain a real horizontal angle value.
Prior to taking measurements using a total station, the total station needs to be calibrated conventionally: and (3) calibrating the verticality of the collimation axis and the transverse axis, and calibrating the collimation axis and the direction of the guide light.
The total station to center image pixel coordinate determination method comprises the following steps: firstly shooting a digital image, then accurately rotating 180 degrees 00 'to shoot a digital image, and identifying the pixel coordinate of the central point O of the overlapped area of the two digital images through digital graphic software, namely the pixel coordinate of the central point A' in the shot image; as shown in fig. 15.
In this embodiment, the controller, the display screen, and the CCD camera of the total station are all of the types conventionally used in the art; the fixing mode of a handle and a bracket in the total station, the mounting mode of a transverse shaft and a lens cone, the mounting mode of a sighting device and a red light guide device, the connecting mode between a leveling base and a tripod panel and the connecting mode between an aiming part and a middle rotating shaft all adopt the conventional connecting mode in the field.
Claims (7)
1. A total station for digital image centering comprises a tripod panel (7), wherein a tripod (9) is installed on the lower side of the tripod panel (7), and a leveling base (6) is fixedly connected to the upper side of the tripod panel (7); an aligning part is arranged above the leveling base (6), a central axis of the aligning part is provided with a central rotating shaft (8), and a CCD (charge coupled device) shooting device (81) is arranged inside the central rotating shaft (8); the method is characterized in that: the middle rotating shaft (8) penetrates through the leveling base (6) and the tripod panel (7) and extends to the lower side of the tripod panel (7); the bottom end of the CCD shooting device (81) extends to the bottom of the middle rotating shaft (8); a hollow cavity (82) is arranged in the middle rotating shaft (8) along the central axis, and a CCD (charge coupled device) camera (81) with automatic focusing is arranged in the hollow cavity (82); the CCD shooting device (81) is internally provided with a CCD chip (811), and the pixel of the CCD chip (811) is not less than 100 ten thousand pixels.
2. The total station in a digital image pair of claim 1, wherein: and an automatic focusing system adopted by the CCD shooting device (81) is an active and passive mixed system.
3. A total station in a digital image pair according to any of claims 1-2, wherein: the bottom end of the CCD shooting device (81) adopts a convex lens (812), and the convex lens (812) protrudes out of the bottom of the central rotating shaft (8).
4. The total station in a digital image pair of claim 3, wherein: the CCD shooting device (81) is connected with a shooting key and a display screen (5) through a lead.
5. The total station in a digital image pair of claim 4, wherein: and a digital operation interface is arranged on the display screen (5), a shooting key is arranged on the digital operation interface, and the shooting key is in signal connection with the CCD shooting device (81).
6. The total station in a digital image pair of claim 4, wherein: and a shooting key is arranged on one side of the display screen (5), and is in signal connection with the CCD shooting device (81).
7. The total station in a digital image pair of claim 1, wherein: after the CCD shooting device (81) is erected, the longitudinal height from the known point mark is 50 cm-200 cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920801788.4U CN209978898U (en) | 2019-05-30 | 2019-05-30 | Total station instrument for digital image centering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920801788.4U CN209978898U (en) | 2019-05-30 | 2019-05-30 | Total station instrument for digital image centering |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209978898U true CN209978898U (en) | 2020-01-21 |
Family
ID=69264857
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920801788.4U Expired - Fee Related CN209978898U (en) | 2019-05-30 | 2019-05-30 | Total station instrument for digital image centering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209978898U (en) |
-
2019
- 2019-05-30 CN CN201920801788.4U patent/CN209978898U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110174095B (en) | Total station instrument for digital image centering and method for measuring horizontal angle by using total station instrument | |
| CN1727845B (en) | Surveying instrument | |
| CN102985787B (en) | There is the geodetic apparatus that automatic, high precision marked point sights function | |
| CA2834189C (en) | Calibration method for a device having a scan function | |
| US6731329B1 (en) | Method and an arrangement for determining the spatial coordinates of at least one object point | |
| CN101975530B (en) | Electronic sighting device and method for regulating and determining graduation thereof | |
| US7319511B2 (en) | Surveying instrument and electronic storage medium | |
| CN101821584B (en) | Optical device | |
| CN103499355B (en) | A kind of laser demarcation device calibration system | |
| CN103604411A (en) | Automatic theodolite collimation method based on image recognition | |
| CN104515498B (en) | Laser measurement system | |
| CN205333053U (en) | Automatic right formula surveyor's level measurment scale | |
| CN108646400A (en) | A kind of autocollimator and its working method | |
| CN110186441B (en) | Total station instrument for digital image centering and horizontal coordinate measuring method thereof | |
| CN103162674B (en) | Measuring instrument | |
| CN103344215B (en) | Double-channel balance level | |
| CN209978898U (en) | Total station instrument for digital image centering | |
| CN106840108A (en) | Vision measurer and vision measuring method | |
| WO2021184398A1 (en) | Laser ranging device | |
| CN108267114A (en) | A kind of auto-collimation total powerstation and its method of work | |
| CN117146861A (en) | Self-positioning target device for laser calibration | |
| RU90192U1 (en) | ELECTRON-OPTICAL RANGE FOR MEASURING DISTANCES TO AN OBJECT CLOSED FROM AN OBSERVER BY A OPTICAL OBSTACLE | |
| CN205120091U (en) | Digital angle -measuring equipment with laser communication function | |
| CN113804159A (en) | Measuring device and method of intelligent leveling rod | |
| US6108919A (en) | Automatic optical plumbing instrument |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200121 Termination date: 20210530 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |