Stroboscopic video to rotations per time conversion

Patent metadata

Field	Value
Publication number	US-12025634-B2
Application number	US-202117304384-A
Country	US
Kind code	B2
Filing date	Jun 21, 2021
Priority date	Jun 21, 2021
Publication date	Jul 2, 2024
Grant date	Jul 2, 2024

Abstract

A rotational speed measurement system includes a video device configured to obtain a video of a pulley of a conveyor belt system. The rotational speed measurement system also includes a strobe configured to generate a stroboscopic effect on the obtained video. The rotational speed measurement system also includes a memory device. The rotational speed measurement system also includes a network interface. The rotational speed measurement system also includes one or more processors configured to: generate a stroboscopic window using the strobe and the obtained video, synchronize the strobe with the obtained video using the stroboscopic window, determine a measured rotational speed for the pulley based on the synchronized strobe, and determine belt slippage based on the measured rotational speed.

First claim

What is claimed is:

1. A rotational speed measurement system comprising:
a video device configured to obtain a video of a pulley of a conveyor belt system;
a strobe configured to generate a stroboscopic effect on the obtained video;
a memory device;
a network interface; and
one or more processors configured to:
generate a stroboscopic window using the strobe and the obtained video;
synchronize the strobe with the obtained video using the stroboscopic window;
determine a measured rotational speed for the pulley based on the synchronized strobe; and
determine belt slippage based on the measured rotational speed.

2. The system of claim 1 , the one or more processors configured to determine a remaining life based on the determined belt slippage.

3. The system of claim 1 , the one or more processors configured to determine a belt temperature based on the determined belt slippage.

4. The system of claim 1 , the one or more processors configured to determine a medium flow rate for the conveyor belt system.

5. The system of claim 4 , the medium comprising one or more of baggage, boxes, grain, ore, coal, and sand.

6. The system of claim 1 , the conveyor belt system comprising a gear box coupled to the pulley and a drive motor coupled to the gear box, the gear box configured to cause the pulley to rotate.

7. The system of claim 1 , the conveyor belt system comprising a belt rotatable around the pulley and a second pulley.

8. The system of claim 7 , the belt comprising a top cover layer, an elastomeric carcass and a bottom layer.

9. The system of claim 1 , the one or more processors configured to deters-nine a belt speed of the conveyor belt system.

10. The system of claim 1 , the one or more processors configured to determine belt slippage based on the measured rotational speed and a medium flow rate for the conveyor belt system.

11. The system of claim 1 , further comprising a user interface configured to facilitate synchronizing the strobe, the user interface comprising a plurality of sliders each having a different resolution value.

12. The system of claim 1 , the strobe comprises one or more light sources configured with a flash duration and strobe period.

13. The system of claim 1 , the strobe being virtually presented with the obtained video as a strobe effect, the strobe effect having a flash duration, intensity, color and period.

14. The system of claim 1 , a period/frequency of the strobe configured to synchronize the pulley to appear as stationary.

15. The system of claim 1 , the video device comprising a camera having a field of view that substantially includes the pulley.

Assignees

• Contitech Antriebssysteme Gmbh

Inventors

• Lortie Michel

Classifications

• G05B23/0283

  Predictive maintenance, e.g. involving the monitoring of a system and, based on the monitoring results, taking decisions on the maintenance schedule of the monitored system; Estimating remaining useful life [RUL] (preventive maintenance, i.e. planning maintenance according to the available resources without monitoring the system G06Q10/06) · CPC title

• G01K13/00

  Thermometers specially adapted for specific purposes · CPC title

• G01F13/003

  comprising a conveyor belt · CPC title

• B65G2203/0291

  Speed of the load carrier · CPC title

• B65G43/04

  detecting slip between driving element and load-carrier, e.g. for interrupting the drive {(B65G43/02 takes precedence)} · CPC title