# US 11,029,153 B2 · Length measurement on an object by taking bearings on measuring points by means of a laser measuring module

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- Number: US 11,029,153 B2
- Document ID: US11029153B2
- Status: Granted
- Kind: B2
- Application number: 15/742,640
- Filed: 2016-06-08
- Published: 2018-07-19
- Granted: 2021-06-08
- Earliest claimed: 2015-07-08
- Assignees: Robert Bosch GmbH
- Applicants: Robert Bosch GmbH
- Inventors: Steffen Assmann; Stoyan Todorov
- Web page: https://patentgrep.com/patent/US11029153B2

## CPC

- G01C 15/002: {Active optical surveying means (optical plumbing G01C15/105)}
- G01B 11/03: by measuring coordinates of points
- G01C 3/08: Use of electric radiation detectors
- G08C 17/02: using a radio link
- G01C: MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY (measuring liquid level G01F; radio navigation, determining distance or velocity by use of propagation effects, e.g. Doppler effects, propagation time, of radio waves, analogous arrangements using other waves G01S)
- G01B: MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G08C: TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS (fluid pressure transmitting systems F15B; mechanical means for transferring the output of a sensing member into a different variable G01D5/00; mechanical control systems G05G)

## Abstract

A system includes a laser measuring module. The laser measuring module is configured to provide a length measurement. The system further includes at least one display module. The display module is configured to electronically display at least one measuring point. The display module is further configured to be separate or removable from the laser measuring module. The bearings of the at least one measuring point are taken using the laser measuring module.

## Claims

### Claim 1

A system, comprising:
a laser measuring module configured to provide a length measurement; and
at least one display module configured to electronically display at least one measuring point associated with the length measurement and further configured to be separate from the laser measuring module, bearings of the at least one measuring point being taken using the laser measuring module,
wherein the bearings are transmitted to the at least one display module such that the display module electronically displays in real time the at least one measuring point only when a field of view of the display module overlaps a portion of a field of view of the laser measuring module that contains the at least one measuring point, and
wherein the at least one display module is configured to be fastened proximate to an eye of a user such that the field of view of the display module corresponds to a field of view of the user.

### Claim 2 (depends on 1)

The system as claimed in claim 1, wherein the at least one display module includes at least one capture unit configured to capture environmental data.

### Claim 3 (depends on 1)

The system as claimed in claim 1, wherein the at least one display module includes a location capture unit that captures location data relating to a position and an orientation of the at least one display module relative to the laser measuring module.

### Claim 4 (depends on 1)

The system as claimed in claim 1, further comprising a computing unit disposed locally in at least one of the laser measuring module and the at least one display module, wherein the computing unit is configured to determine coordinates to electronically display the at least one measuring point via the display module at least from position data relating to the at least one measuring point, and wherein the bearings of the at least one measuring point are taken from location data relating to the at least one display module.

### Claim 5

A display module included in a system having a laser measuring module that provides a length measurement, the display module comprising:
a display unit configured to electronically display at least one measuring point associated with the length measurement and further configured to be separate from the laser measuring module,
wherein bearings of the at least one measuring point are taken using the laser measuring module and are transmitted to the display unit such that the at least one measuring point is electronically displayed in real time on the display unit only when a field of view of the display unit overlaps a portion of a field of view of the laser measuring module that contains the at least one measuring point, and
wherein the display unit is configured to be fastened proximate to an eye of a user such that the field of view of the display unit corresponds to a field of view of the user.

### Claim 6

A method for displaying a measuring point using a system including a laser measuring module and at least one display module, the method comprising:
fastening the at least one display module proximate to an eye of a user;
providing a length measurement using the laser measuring module;
taking bearings of at least one measuring point associated with the length measurement using the laser measuring module;
comparing location data relating to the at least one display module with location data relating to the laser measuring module; and
electronically displaying in real time the at least one measuring point using the at least one display module when a field of view of the display module overlaps a portion of a field of view of the laser measuring module that contains the at least one measuring point, the at least one display module configured to be separate from the laser measuring module, the field of view of the display module corresponding to a field of view of the user.

### Claim 7 (depends on 6)

The method as claimed in claim 6, further comprising:
moving the at least one display module independently of the laser measuring module in space; and
capturing the location data relating to the at least one display module using a location capture unit of the at least one display module.

### Claim 8 (depends on 6)

The method as claimed in claim 6, further comprising:
determining display coordinates of the at least one measuring point using a computing unit disposed locally in at least one of the laser measuring module and the at least one display module, the bearings of the at least one measuring point being taken for displaying the at least one measuring point via the display module at least from the location data relating to the laser measuring module and from the location data relating to the at least one display module.

### Claim 9 (depends on 6)

The method as claimed in claim 6, further comprising:
taking the bearings of at least one further measuring point using the laser measuring module; and
displaying the at least one further measuring point using the at least one display module.

### Claim 10 (depends on 9)

The method as claimed in claim 9, further comprising:
displaying a line using the at least one display module between the at least one measuring point and the at least one further measuring point.

### Claim 11 (depends on 7)

The method as claimed in claim 7, further comprising:
taking bearings of a sequence of at least three measuring points using the laser measuring module; and
displaying the at least three measuring points using the at least one display module for selection for a measuring operation.

### Claim 12 (depends on 11)

The method as claimed in claim 11, further comprising:
calculating at least one geometrical variable determined by the at least one measuring point using a computing unit of the system.

### Claim 13 (depends on 1)

The system as claimed in claim 1, wherein the at least one display module is further configured to be removable from the laser measuring module.

### Claim 14 (depends on 6)

The method as claimed in claim 6, wherein the at least one display module is configured to be removable from the laser measuring module.

### Claim 15 (depends on 1)

The system as claimed in claim 1, further comprising at least one communication apparatus configured to transmit position data relating to the at least one measuring point from the laser measuring module to the at least one display module.

### Claim 16 (depends on 1)

The system as claimed in claim 1, wherein the at least one display module moves relative to the laser measuring module without a fixed mechanical connection to the laser measuring module.

### Claim 17 (depends on 3)

The system as claimed in claim 3, wherein the location data is captured continuously in real time such that the electronic display of the at least one measuring point by the at least one display module changes simultaneously with a change in the location data.

### Claim 18 (depends on 5)

The display module as claimed in claim 5, further comprising a housing to which the display unit is mounted, the housing configured to be spatially displaced and rotated independently of the laser measuring module.

### Claim 19 (depends on 7)

The method as claimed in claim 7, wherein moving the at least one display module includes moving a first housing of the at least one display module independently of a second housing of the laser measuring module in space.
