Conveyor Belt Overheating Detection Using Thermal Cameras
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Solution Overview
Problem
Conveyor belts used in aggregate transportation systems are prone to overheating and fires due to friction, leading to downtime and maintenance challenges, as existing fire prevention systems lack the ability to identify the cause of overheating and intervene effectively.
Innovation Solution
The use of thermal cameras positioned along the conveyor belt to detect temperature and estimate the extent and origin of overheating, allowing for targeted intervention by controlling the conveyor belt's speed or stopping it, and integrating an anti-fire system with cooling or fire-extinguishing mechanisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If heat sensors are used to detect temperature and activate alarms or stop the conveyor belt, then fire detection capability is improved, but the ability to trace the cause of overheating and intervene locally is lost
Solution Approach 1:
The conveyor belt is divided into multiple sections with individual thermal cameras assigned to each section. This segmentation allows the system to detect temperature anomalies in specific locations rather than treating the entire belt as a single detection zone, thereby preserving location information while maintaining fire detection capability
Solution Approach 2:
A control unit acts as an intermediary between the thermal cameras and the fire-extinguishing systems. This control unit processes temperature data from multiple cameras, determines the specific location of overheating, and activates the corresponding local fire-extinguishing device, thus bridging the gap between detection and localized intervention
2Reliability
If the conveyor belt is stopped to prevent fire, then safety is improved, but downtime increases due to inability to perform localized repairs
Solution Approach 1:
Fire-extinguishing devices are distributed locally along the conveyor belt rather than using a single centralized system. This allows only the affected section to be treated with fire-extinguishing agent, enabling continued operation of unaffected sections and minimizing overall downtime
Solution Approach 2:
Fire-extinguishing devices are pre-positioned at multiple locations along the conveyor belt, ready for immediate activation. This preliminary preparation eliminates the need to stop the entire system for fire suppression, as the local device can be activated instantly while other sections continue operating
3Measurement precision
If thermal cameras are positioned along the conveyor belt to detect temperature, then overheating detection precision is improved, but device complexity increases
Solution Approach 1:
The control unit performs multiple functions: it receives data from all thermal cameras, processes temperature information, determines the location of overheating, and activates the appropriate fire-extinguishing device. This multi-functionality consolidates what would otherwise require multiple separate systems into a single integrated unit, managing complexity while maintaining detection precision
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enables immediate identification and mitigation of overheating, reducing downtime and ensuring safety and reliability by accurately locating and addressing the source of heat, thereby preventing fires and maintaining optimal conveyor belt operation.
Implementation Method 1
a plurality of thermal cameras (2) positioned along the development of the conveyor belt (3) and configured to detect the temperature of the conveyor belt (3)
Implementation Method 2
a processing and control unit (4) communicating data with each one of said plurality of thermal cameras (2) to receive input temperature data detected by each one of said plurality of thermal cameras (2) and configured to estimate the extent and origin position of an overheating phenomenon of the conveyor belt (3)
Implementation Method 3
The movement of the conveyor belt, also given the significant weight of the aggregates it carries, involves high friction between the rubber belt and all the components used for its support, such as, first of all, the idle rollers above, against which the conveyor belt rubs during movement
Implementation Method 4
the localized increase in friction, due for example to a blockage of one of the idle rollers supporting the belt, is sufficient to cause significant increases in temperature of the belt
Data Source
AI summary
An apparatus for transporting aggregates or similar includes a conveyor belt for aggregates or similar and an actuating mechanism actuating advancement of the conveyor belt. The apparatus includes a plurality of thermal cameras positioned along the development of the conveyor belt and configured to detect the temperature of the conveyor belt in a plurality of detection positions positioned along the development of the conveyor belt. The apparatus further includes a processing and control unit communicating data with each one of thermal cameras of the plurality of thermal cameras to receive input temperature data detected by each thermal camera. The processing and control unit is configured to estimate the extent and origin position of an overheating phenomenon of the conveyor belt on the basis of the temperature detected in correspondence of at least two detection positions of the plurality of detection positions.