Point layout system using single laser transmitter

Patent metadata

Field	Value
Publication number	US-11226199-B2
Application number	US-201815869255-A
Country	US
Kind code	B2
Filing date	Jan 12, 2018
Priority date	Jan 17, 2017
Publication date	Jan 18, 2022
Grant date	Jan 18, 2022

Abstract

A laser controller having an electronic distance measuring instrument and a laser light transmitter creating a vertical laser plane is used with a remote controller and a movable target for point layout tasks. The electronic distance measurer and laser transmitter are mounted on the same vertical pivot axis. Once the system is set-up for a particular jobsite, the laser plane can be aimed at a specific point of interest on the jobsite floor, and a visible laser light line will then appear on the floor, from the laser controller, all the way to that point of interest. The distance measuring instrument is aimed along the same heading as the laser plane, and it gives the distance to the movable target, which is moved along the visible laser light line, until reaching the specified distance, and thereby find the point of interest.

First claim

What is claimed is:

1. A layout and point transfer system that aids in finding a point of interest on a jobsite, comprising:
(a) a laser controller, including:
(i) a laser light transmitter that emits a substantially vertical plane of visible wavelength laser light, said laser light transmitter being rotatable about a substantially vertical axis;
(ii) an electronic distance measuring instrument that is rotatable about said substantially vertical axis, said electronic distance measuring instrument being directional about said substantially vertical axis and aimed at the same azimuth angle as said substantially vertical plane of visible wavelength laser light;
(iii) an electronic angle measuring instrument; and
(iv) a first processing circuit, a first memory circuit including instructions executable by said first processing circuit, a first communications circuit, and a first input/output interface circuit;

(b) a remote controller, including:
(i) a second processing circuit, a second memory circuit including instructions executable by said second processing circuit, a second communications circuit, a display monitor, a user-operated input circuit, and a second input/output interface circuit, wherein said laser controller and said remote controller communicate with one another by use of said first and second communications circuits; and

(c) a movable target screen, comprising:
(i) a movable chassis; and
(ii) a screen having a size and shape to intercept said visible wavelength laser light when the chassis is sitting on a jobsite surface, in which said screen includes a surface that is at least partially reflective to emissions from said electronic distance measuring instrument;

wherein:
(d) said first and second processing circuits are configured:
(i) to allow a specific point of interest to be selected at said user-operated input circuit;
(ii) to emit from the laser light transmitter said substantially vertical plane of visible wavelength laser light, under the control of said first processing circuit;
(iii) to aim said laser light transmitter in a predetermined heading under the control of said first processing circuit and at an angle that is determined by said electric angle measuring instrument, so that the substantially vertical plane of visible wavelength laser light is aimed at said selected point of interest on said jobsite surface;
(iv) to determine a physical distance between said electronic distance measuring instrument and said movable target screen, in which said physical distance is measured in near real time by said electronic distance measuring instrument; and
(v) if said movable target screen is positioned at a predetermined distance along said substantially vertical plane of visible wavelength laser light that corresponds to a physical distance between the electronic distance measuring instrument and the selected point of interest, as measured by said electronic distance measuring instrument, then for at least one of (A) said laser controller and (B) said remote controller to provide an indication of an ON POINT status.

2. The system of claim 1 , wherein said substantially vertical plane of visible wavelength laser light creates a visible laser light line along the jobsite surface, and said target screen is moved in a direction of said visible laser line, until arriving at said predetermined distance along said substantially vertical plane of visible wavelength laser light.

3. The system of claim 1 , wherein: (i) if the status of said determined physical distance is TOO LONG, then said display monitor on the remote controller will output a first visible indication; (ii) if the status of said determined physical distance is TOO SHORT, then said display monitor on the remote controller will output a second visible indication; and (iii) if the status of said determined physical distance is ON POINT, then said display monitor on the remote controller will output a third visible indication.

4. The system of claim 1 , wherein: (i) if the status of said determined physical distance is TOO LONG, then said remote controller will output a first audible indication; (ii) if the status of said determined physical distance is TOO SHORT, then said remote controller will output a second audible indication; and (iii) if the status of said determined physical distance is ON POINT, then said the remote controller will output a third audible indication.

5. The system of claim 1 , wherein:
(i) if the status of said determined physical distance is TOO LONG, then said laser controller will command the laser light transmitter to turn on and off the substantially vertical plane of visible wavelength laser light at a first flashing rate;
(ii) if the status of said determined physical distance is TOO SHORT, then said laser controller will command the laser light transmitter to turn on and off the substantially vertical plane of visible wavelength laser light at a second flashing rate; and
(iii) if the status of said determined physical distance is ON POINT, then said laser controller will command the laser light transmitter to continuously turn on the substantially vertical plane of visible wavelength laser light.

6. The system of claim 1 , further comprising: an indicator lamp at said laser controller, wherein (i) if the status of said determined physical distance is TOO LONG, then said indicator lamp will output a first visible indication; (ii) if the status of said determined physical distance is TOO SHORT, then said indicator lamp will output a second visible indication; and (iii) if the status of said determined physical distance is ON POINT, then said indicator lamp will output a third visible indication.

7. The system of claim 1 , wherein: at a time when said movable target screen has been moved to said predetermined distance along said visible laser light line, then a human user is able to mark said jobsite surface at the location along said visible laser light line where said movable target screen exists.

8. The system of claim 1 , wherein: both of said first and second communications circuits comprise wireless transmitters and wireless receivers.

9. The system of claim 1 , wherein: said electronic distance measuring instrument comprises a laser distance meter.

10. The system of claim 9 , wherein: said electronic distance measuring instrument emits a substantially horizontal laser measuring beam above floor level.

11. The system of claim 1 , wherein: the remote controller and movable target screen are mounted to a rolling chassis.

12. The system of claim 1 , wherein: said substantially vertical plane of visible wavelength laser light creates a vertical laser light line that appears on said movable target screen.

13. The system of claim 12 , wherein: an intersection of laser light lines on the jobsite surface and on the movable target screen produces a lighted L-shaped mark that visually indicates the point of interest.

14. The system of claim 1 , further comprising: a self-leveling mount for said rotatable laser light transmitter and said rotatable electronic distance measuring instrument.

15. The system of claim 1 , wherein said substantially vertical plane of visible wavelength laser light does not contact said jobsite surface, and
(a) said target screen is moved in a non-radial direction until said substantially vertical plane of visible wavelength laser light makes contact with the target screen, and appears as a substantially vertical line on the target screen; then
(b) said target screen is moved in a radial direction so as to keep said substantially vertical line on the target screen, until arr

Assignees

• Trimble Navigation Ltd

Inventors

• Unger Eric Keith
• Hayes James N
• Snyder Chris W

Classifications

• G01C15/006 Primary

  Detectors therefor · CPC title

• G01C15/06

  Surveyors' staffs; Movable markers · CPC title

• G01S17/74

  Systems using reradiation of electromagnetic waves other than radio waves, e.g. IFF, i.e. identification of friend or foe · CPC title

• G01S7/497

  Means for monitoring or calibrating · CPC title

• G01S7/4813

  Housing arrangements · CPC title