Garbage Truck Hopper Thermal Detection for Compactor Shutdown
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Solution Overview
Problem
Garbage truck accidents occur due to the inability of drivers to detect individuals entering the hopper, obscured by debris and noise, leading to injuries and fatalities, as existing camera systems lack thermal imaging and automatic deactivation capabilities.
Innovation Solution
A camera and safety system with thermal imaging and audio/video capabilities is integrated into garbage trucks, featuring cameras and temperature sensors within the hopper, a control module, and vehicle control interface to automatically deactivate compacting systems and alert drivers upon detecting a person, ensuring real-time notification and prevention of harm.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If visual cameras are used to monitor the hopper, then the operator can see the contents, but the view is obscured by excess trash, ice buildup, dirt, and debris
Solution Approach 1:
The patent introduces thermal imaging cameras as an intermediary detection method that does not rely on direct visual line-of-sight through the hopper. The thermal cameras detect heat signatures of persons, providing reliable detection information even when visual cameras are obscured by trash, ice, or debris.
Solution Approach 2:
The patent replaces the mechanical/visual observation system with a thermal sensing system. Instead of relying on visible light cameras that require clear lines of sight, the system uses thermal radiation detection to sense the presence of persons, substituting one physical detection mechanism for another that is less susceptible to obscuration.
2Loss of information
If the operator relies on mirrors and cameras to observe the hopper, then remote monitoring is possible, but the noise of dumping and compacting prevents hearing someone in the hopper
Solution Approach 1:
The patent replaces acoustic detection (hearing sounds of persons in the hopper) with optical/thermal detection. The thermal imaging system detects infrared radiation from human bodies, providing a non-acoustic method of detection that is not interfered with by the high noise levels during dumping and compacting operations.
3Adaptability or versatility
If existing camera systems are used to monitor for improper trash items, then visual inspection is provided, but they lack thermal imaging and automatic deactivation capabilities
Solution Approach 1:
The patent creates a multi-functional safety system that combines thermal imaging detection with automatic control functions. The system not only detects persons in the hopper but also automatically deactivates the compaction mechanism, providing both monitoring and protective functions in an integrated system.
Solution Approach 2:
The patent implements a feedback control loop where thermal cameras continuously monitor the hopper, the control system processes the thermal images to detect persons, and upon detection, automatically sends deactivation signals to the compaction mechanism. This closed-loop feedback system provides reliable safety capability that simple visual monitoring systems lack.
4Productivity
If the driver focuses on other tasks while operating the truck, then productivity is maintained, but the driver may not witness a person falling into the hopper in real time
Solution Approach 1:
The system provides continuous automated feedback through thermal imaging monitoring, alerting the driver to the presence of persons in the hopper without requiring the driver to maintain constant visual attention. This allows the driver to perform other tasks while the system maintains safety monitoring.
Solution Approach 2:
The safety monitoring function serves itself through automated thermal detection and alerting, rather than requiring the driver to manually observe and detect persons. The system independently performs the safety function, freeing the driver to focus on other operational tasks.
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
The system significantly enhances safety by providing immediate alerts and automatic deactivation of compacting systems, reducing accidents and truck damage, and ensuring driver awareness of individuals in the hopper area.
Implementation Method 1
A camera system and safety system with thermal imaging capabilities as well as audio and video capabilities will help reduce the number of accidents
Data Source
AI summary
A garbage truck camera and safety system includes a garbage truck having a lift arm mechanism, a hopper, and a trash compacting device disposed within the hopper. At least one camera and temperature sensor are disposed within the hopper. A control module is operably connected to the cameras and the temperature sensor, as well as to one or more vehicle systems, via a vehicle control interface disposed within the driver's cab. The control module includes a processor, a non-transitory computer readable medium operatively connected to the processor, and a logic stored in the non-transitory computer readable medium that, when executed by the processor, causes the system to detect, via the temperature sensor, the temperature within the hopper; and if the temperature detected is above a predetermined threshold temperature, then deactivating the trash compacting device. The system will prevent harm from being done to individuals who accidentally fall into the hopper.