Integrated auto-level and electronic rod reader

Patent metadata

Field	Value
Publication number	US-9633246-B2
Application number	US-201414498406-A
Country	US
Kind code	B2
Filing date	Sep 26, 2014
Priority date	Sep 26, 2014
Publication date	Apr 25, 2017
Grant date	Apr 25, 2017

Abstract

An integrated auto-level and electronic rod reader is disclosed. In one embodiment, the integrated auto-level and electronic rod reader comprises a telescope and an image delivery device integrated with the auto-level which is configured for capturing an image of a standard grade rod visible through the telescope and a crosshair. Logic implemented by a processor automatically recognizes the crosshair, automatically compares the crosshair against a scale of the standard grade rod, and automatically determines an elevation of the standard grade rod based upon the comparing.

First claim

What is claimed is:

1. An integrated auto-level and electronic rod reader comprising:
a telescope; and
an image delivery device integrated with the telescope and comprising:
an image capture device configured for capturing an image, wherein the image includes data representing:
alphanumeric characters annotating a scale on a grade rod visible through the telescope, wherein the scale of the grade rod indicates either metric or imperial measurement units, and
a crosshair, and

a transmitter configured to transmit the image to an electronic field notebook comprising a receiver configured to receive the image, and a circuit configured to automatically determine whether the scale indicates metric or imperial measurement units, to automatically recognize the alphanumeric characters and the crosshair of the image, and to automatically determine an elevation of the grade rod based on a position of the crosshair with respect to the scale annotated with the alphanumeric characters and based on whether the scale indicates metric or imperial measurement units.

2. The auto-level of claim 1 , further comprising:
a non-transitory computer readable data storage medium coupled with said circuit for storing said elevation as a first reading.

3. The auto-level of claim 2 wherein said circuit and said non-transitory computer readable data storage medium are components of a portable electronic device.

4. The auto-level of claim 3 wherein said circuit and said non-transitory computer readable data storage medium are components of a cellular telephone.

5. The auto-level of claim 3 wherein said portable electronic device further comprises:
a wireless communication device configured for receiving a position of said grade rod and wherein said circuit is configured to cause said position to be automatically stored with said first reading.

6. The auto-level of claim 1 wherein said image delivery device further comprises:
a wireless communication device configured for conveying said image to said circuit.

7. The auto-level of claim 1 wherein the circuit is configured to automatically recognize the alphanumeric characters.

8. The auto-level of claim 1 wherein the circuit is configured to automatically determine a type of the grade rod.

9. The auto-level of claim 1 wherein the circuit is configured to estimate a value associated with the grade rod by counting image pixels between the crosshair of the auto-level and said scale of said grade rod.

10. The auto-level of claim 1 wherein the circuit is integrated with said image delivery device.

11. A method of automatically reading and recording auto-level readings, said method comprising:
capturing an image through a telescope of an auto-level using an image delivery device integrated with said auto-level, wherein the image includes data representing alphanumeric characters annotating a scale on a grade rod;
automatically recognizing a crosshair overlying said image using a circuit;
automatically determining whether the scale indicates metric or imperial measurement units;
automatically determining an elevation of said standard grade rod based on the crosshair and the alphanumeric characters using said circuit, and based on whether the scale indicates metric or imperial measurement units; and
automatically storing said elevation using a non-transitory computer readable data storage medium coupled with the circuit as a first reading.

12. The method of claim 11 further wherein said circuit and said non-transitory computer readable data storage medium are components of a portable electronic, said method further comprising:
using said portable electronic device to perform said automatically recognizing, said automatically determining, and said automatically storing.

13. The method of claim 12 wherein said image delivery device, said circuit, and said non-transitory computer readable data storage medium are components of a cellular telephone, said method further comprising:
using said cellular telephone to perform said automatically recognizing, said automatically determining, and said automatically storing.

14. The method of claim 12 further comprising:
receiving a position of said grade rod using a wireless communication device of said portable electronic device; and
automatically storing said position with said first reading.

15. The method of claim 11 wherein said image delivery device further comprises a wireless transceiver, said method further comprising:
conveying said image from said image delivery device to said circuit using said wireless transceiver.

16. The method of claim 11 further comprising:
automatically determining a type of said grade rod captured in said image through said telescope of said auto-level.

17. The method of claim 11 further comprising:
automatically estimating a value associated with the grade rod by counting image pixels between the crosshair of the auto-level and said scale of said grade rod.

18. An auto-level and rod reader comprising:
an auto-level comprising:
a telescope; and
an image delivery device coupled with the telescope and configured for capturing an image through said telescope, wherein the image includes data representing:
alphanumeric characters annotating a scale on a grade rod visible through the telescope, wherein the scale of the grade rod indicates either metric or imperial measurement units, and
a crosshair; and

a circuit configured to automatically determine whether the scale indicates metric or imperial measurement units, and to determine an elevation of said standard grade rod based on a position of the crosshair with respect to the scale annotated with the alphanumeric characters and based on whether the scale indicates metric or imperial measurement units; and
a non-transitory computer readable data storage medium coupled with said circuit for storing said elevation as a first reading.

19. The auto-level and rod reader of claim 18 wherein said circuit and said non-transitory computer readable data storage medium are components of a portable electronic device.

20. The auto-level and rod reader of claim 19 wherein said circuit and said non-transitory computer readable data storage medium are components of a cellular telephone.

21. The auto-level and rod reader of claim 19 wherein said portable electronic device further comprises:
a wireless transceiver configured for receiving a position of said grade rod and wherein said logic causes said position to be automatically stored with said first reading.

22. The auto-level and rod reader of claim 18 wherein said image delivery device further comprises:
a wireless transceiver configured for conveying said image to said circuit.

23. The auto-level and rod reader of claim 18 wherein said logic implemented by said circuit facilitates automatically recognizing a character shown on said standard grade rod.

24. The auto-level and rod reader of claim 18 wherein said logic implemented by said circuit facilitates automatically determining a type of said grade rod.

25. The auto-level and rod reader of claim 18 wherein said logic implemented by said circuit is configured to estimate a value associated with the grade rod by counting image pixels between the crosshair of the auto-level and said scale of said grade rod.

26. The auto-level and rod reader of claim 18 wherein said circuit is integrated with said image delivery d

Assignees

• Trimble Navigation Ltd
• Trimble Inc

Inventors

• Bank Michael

Classifications

• H04N23/63

  by using electronic viewfinders · CPC title

• G06V10/245

  by locating a pattern; Special marks for positioning · CPC title

• G01C15/06

  Surveyors' staffs; Movable markers · CPC title

• G01C5/02 Primary

  involving automatic stabilisation of the line of sight · CPC title

• G01C15/00

  Surveying instruments or accessories not provided for in groups G01C1/00 - G01C13/00 · CPC title