Optical detection and analysis of a counterweight assembly on a crane

Patent metadata

Field	Value
Publication number	US-11130658-B2
Application number	US-201715819234-A
Country	US
Kind code	B2
Filing date	Nov 21, 2017
Priority date	Nov 22, 2016
Publication date	Sep 28, 2021
Grant date	Sep 28, 2021

Abstract

An optical detection system for a crane having a counterweight assembly includes an image capture assembly having one or more image capture devices configured to capture an image of the counterweight assembly and an optical control system. The optical control system is configured to detect one or more objects in the captured image, the one or more objects selected from the counterweight assembly, a weight unit of the counterweight assembly, a stack of weight units of the counterweight assembly, and a marker on the counterweight assembly. The optical control system is also configured to analyze the one or more detected objects and determine a status of counterweight assembly based on the analysis of the one or more detected objects.

First claim

The invention claimed is:

1. A crane comprising:
a carrier;
a superstructure coupled to the carrier, the superstructure including a boom;
a counterweight assembly configured for movement or repositioning by linear movement or pivoting on an axis relative to the superstructure in a plurality of positions for different lifting operations on the crane, the counterweight assembly comprising one or more weight units;
an optical detection system comprising:
an image capture assembly comprising one or more image capture devices configured to capture an image of the counterweight assembly; and
an optical control system comprising a computer processor and a non-transitory computer-readable storage medium storing instructions, that when executed by the computer processor cause the optical control system to implement one or more functions to:
detect the counterweight assembly in the captured image;
analyze the detected counterweight assembly in the captured image; and
determine a status of the counterweight assembly based on the analysis of the detected counterweight assembly in the captured image, the determined status including a determined position of the counterweight assembly, wherein the determined position of the counterweight assembly is an actual position of the counterweight assembly calculated based on an identified position of the detected counterweight assembly in the captured image, the actual position determined quantitatively as a distance of the counterweight assembly from a reference point within a coordinate system, and the determined status further including a determined weight of the counterweight assembly; and

a crane control system configured to determine a maximum load capacity of the crane based on the actual position of the counterweight assembly and the weight of the counterweight assembly determined by the optical control system.

2. The crane of claim 1 , wherein the one or more image capture devices include a camera.

3. The crane of claim 1 , wherein the determined status of the counterweight assembly further includes at least one of a configuration of the counterweight assembly and a specification of the counterweight assembly.

4. The crane of claim 1 , wherein a weight unit of the one or more weight units includes a marker, and wherein the optical control system analyzes the detected one or more weight units to detect at least one of a shape of the weight unit, a color of the marker, and a pattern of the marker.

5. The crane of claim 4 , wherein the optical control system further analyzes the detected one or more weight units to identify the detected one or more weight units as a known weight unit.

6. The crane of claim 5 , wherein the optical control system retrieves additional information associated with the known weight unit, and the determined status is based on the additional information.

7. The crane of claim 5 , wherein the optical control system counts a number of the detected on or more weight units that are identified as known weight units, and the determined status is based on the counted number of detected weight units.

8. The crane of claim 5 , wherein the optical control system identifies a position of the detected one or more weight units within the captured image, and the determined status is based on the position of the detected one or more weight units within the captured image.

9. The crane of claim 1 , wherein the crane control system is operably coupled to a crane component and configured to control or prevent movement of the one or more crane components based on the determined status.

10. The crane of claim 9 , wherein the crane control system controls or prevents movement of the crane component based on the determined maximum load capacity.

11. An optical detection system for a crane having a movable or repositionable counterweight assembly repositionable to a plurality of positions for different lifting operations by linear movement or pivoting on an axis relative to the superstructure, the counterweight assembly comprising one or more weight units, the system comprising:
an image capture assembly comprising one or more image capture devices configured to capture an image of the counterweight assembly; and
an optical control system comprising a computer processor and a non-transitory computer-readable storage medium storing instructions, that when executed by the computer processor cause the optical control system to implement one or more functions to:
detect the counterweight assembly in the captured image;
analyze the detected counterweight assembly in the captured image;
determine a status of the counterweight assembly based on the analysis of the detected counterweight assembly in the captured image, the determined status including a determined position of the counterweight assembly, wherein the determined position of the counterweight assembly is an actual position of the counterweight assembly calculated based on an identified position of the detected counterweight assembly in the captured image, the actual position determined quantitatively as a distance of the counterweight assembly from a reference point within a coordinate system, and the determined status further including a determined weight of the counterweight assembly; and
determine a maximum load capacity based on the determined position of the counterweight assembly and the determined weight of the counterweight assembly.

12. The optical detection system of claim 11 , wherein the optical control system analyzes the detected one or more weight units to identify the detected one or more weight units as one or more known weight units.

13. The optical detection system of claim 12 , wherein the optical control system retrieves additional information associated the one or more known weight units, and the determined status is based on the additional information.

14. The optical detection system of claim 12 , wherein the optical control system counts a number of the detected one or more weight units, and the determined status is based on the counted number of detected weight units.

15. The optical detection system of claim 12 , wherein the optical control system identifies a position of the detected one or more weight units within the captured image, and the determined status is based on the position of the detected one or more weight units within the captured image.

16. A method of determining a status of a crane component comprising:
capturing, with an image capture assembly, an image of a counterweight assembly movable or repositionable on a crane by linear movement or pivoting on an axis relative to a superstructure to a plurality of positions for different lifting operations, the counterweight assembly comprising one or more weight units;
detecting, with an optical control system, the one or more weight units in the captured image;
analyzing, with the optical control system, the detected one or more weight units in the captured image;
determining, with the optical control system, a status of the counterweight assembly based on the analysis of the detected one or more weight units in the captured image, the determined status including an actual position of the counterweight assembly and a weight of the counterweight assembly; and
determining a maximum load capacity based on the determined actual position of the counterweight assembly and the determined weight of the counterweight assembly,
wherein determining the actual position of the counterweight assembly includes identifying, with the optical control system, a position of the detected counterweight assembly in the captur

Assignees

• Manitowoc Crane Companies Llc

Inventors

• Rudy John R
• Thoresen Matthew

Classifications

• G01B11/26

  for measuring angles or tapers; for testing the alignment of axes · CPC title

• B66C23/36

  mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes (with pneumatic or hydraulic motors B66C23/54; vehicle or ship aspects B60 - B63) · CPC title

• B66C15/065

  electrical · CPC title

• B66C13/18

  Control systems or devices (exclusively for rope, cable, or chain winding mechanisms B66D1/40) · CPC title

• G06T7/60

  Analysis of geometric attributes · CPC title