Lifting device with load hazard avoidance using a sensor coupled with the load line

• US 9,248,998 B2
• Filed: 11/22/2013
• Issued: 02/02/2016
• Est. Priority Date: 02/01/2010
• Status: Active Grant

• Current Assignee: Trimble Navigation Limited (Trimble Inc.)
• Original Assignee: Trimble Navigation Limited (Trimble Inc.)
• Inventors: Maynard, Kurtis L., Cameron, John F.
• Primary Examiner(s): HOFSASS, JEFFERY A
• Application Number:
  US14/088,179
• Publication Number:
  US 20140081535A1
• Time in Patent Office: 802 Days
• Field of Search: 340/685, 340/539.1, 340/539.22, 340/539.25, 340/540, 701/468, 701/469, 701/50, 212276-281
• US Class Current: 1/1
• CPC Class Codes: B66C 13/46 Position indicators for suspended loads or for crane elements
• CPC Class Codes: B66C 15/04 for preventing collisions, e.g. between cranes or trolleys operating on the same track
• CPC Class Codes: B66C 15/045 electrical

Abstract

A method of lifting device load hazard avoidance is disclosed. In one embodiment, the method comprises determining a three dimensional position of a load hazard avoidance sensor unit coupled with a load line of a lifting device, the determining performed by a first global navigation satellite system (GNSS) receiver coupled with a housing of the load hazard avoidance sensor unit, monitoring for a load related hazard in a vicinity of a load coupled with the load line, the monitoring performed by a load monitor coupled with the housing and initiating at least one load related hazard avoidance action in response to a monitored occurrence of the load related hazard.

Claims

1. A method of lifting device load hazard avoidance, said method comprising:

determining a three dimensional position of a load hazard avoidance sensor unit coupled with a load line of a lifting device, said determining performed by a first global navigation satellite system (GNSS) receiver coupled with a housing of said load hazard avoidance sensor unit;

monitoring for a load related hazard in a vicinity of a load coupled with said load line, said monitoring performed by a load monitor coupled with said housing; and

initiating at least one load related hazard avoidance action in response to a monitored occurrence of said load related hazard.

2. The method as recited in claim 1, wherein said monitoring for a load related hazard in a vicinity of a load coupled with said load line comprises:

monitoring for an imminent collision between said load and an object in the vicinity of said load.

3. The method as recited in claim 1, wherein said monitoring for a load related hazard in a vicinity of a load coupled with said load line comprises:

monitoring for a loss of visibility of person beneath said load.

4. The method as recited in claim 1, wherein said initiating at least one load related hazard avoidance action in response to a monitored occurrence of said load related hazard comprises:

wirelessly providing a load hazard alert to be output by a display unit located apart from said load hazard avoidance sensor unit.

5. The method as recited in claim 1, wherein said initiating at least one load related hazard avoidance action in response to a monitored occurrence of said load related hazard comprises:

sounding a warning.

6. The method as recited in claim 1, wherein said initiating at least one load related hazard avoidance action in response to a monitored occurrence of said load related hazard comprises:

illuminating an indicator.

7. The method as recited in claim 1 further comprising:

determining said three dimensional position of said sensor unit using an inertial sensor; and

wirelessly providing said three dimensional position of said sensor unit to a display unit.

8. A lifting device load hazard avoidance system comprising:

lifting device load hazard avoidance sensor unit configured for coupling with a load line of a lifting device; and

a computer system located remotely from said lifting device load hazard avoidance sensor unit and configured for receiving wirelessly reported information from said lifting device load hazard avoidance sensor unit and utilizing said wirelessly reported information for monitoring for a load related hazard in a vicinity of said load and initiating at least one load related hazard avoidance action in response to a monitored occurrence of said load related hazard.

9. A lifting device load hazard avoidance sensor unit, said load hazard avoidance unit comprising:

a housing configured to removably couple about a load line of a lifting device;

a global navigation satellite system (GNSS) receiver coupled with said housing and configured for determining a load hazard avoidance sensor unit position in three dimensions;

a load monitor coupled with said housing and configured for monitoring a load coupled with said load line, said load monitor further configured for monitoring for a load related hazard in a vicinity of said load; and

an avoidance action initiator coupled with said housing and configured for initiating at least one load related hazard avoidance action in response to a monitored occurrence of said load related hazard.