Vehicle Load-Arm RFID Detection for Hazardous Battery Identification
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The increasing use of lithium ion batteries in waste and recycling streams poses a fire hazard due to thermal runaway and mechanical damage, as existing detection methods are inadequate for early identification in large volumes, especially on tipping floors and conveyorized handling stations.
Innovation Solution
Implementing active radio beacons powered by lithium ion batteries to transmit a warning signal when the battery is hazardous, combined with directional antenna configurations on vehicles to detect these beacons and distinguish them from ambient signals, allowing for early identification and removal of potentially flammable batteries.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Difficulty of detecting and measuring
If visual detection by human operators or cameras is used to identify lithium batteries, then detection capability is improved, but detection accuracy and reliability deteriorate due to complexity of accurate identification and lack of line of sight
Solution Approach 1:
A radio frequency identification (RFID) tag is introduced as an intermediary device attached to each lithium battery. The tag contains an antenna and circuitry that actively transmits or passively responds to RFID signals, serving as a mediator between the battery and the detection system. This intermediary enables reliable detection without requiring visual contact or complex image processing, as the RFID reader can detect the tag's electromagnetic signal through containers and amidst other materials.
Solution Approach 2:
The mechanical and visual detection system (human operators physically inspecting or cameras capturing images) is replaced with an electromagnetic field-based RFID detection system. The RFID reader emits electromagnetic signals that interact with the RFID tags on batteries, enabling automated, contactless detection that is more accurate and reliable than visual methods, especially when line of sight is blocked.
2Difficulty of detecting and measuring
If magnetic induction techniques are used for battery detection, then detection capability is improved, but ease of implementation deteriorates on tipping floors
Solution Approach 1:
The RFID tag serves as an intermediary that carries the detection functionality directly with the battery, eliminating the need for complex magnetic induction equipment at detection locations. The tag's antenna and circuitry enable it to be detected by standard RFID readers, which are much simpler to implement than magnetic induction systems, especially in environments like tipping floors where quick, simple detection is needed.
3Measurement precision
If detection is performed at conveyorized handling stations, then detection accuracy is improved, but response time deteriorates making it too late to protect the facility
Solution Approach 1:
The RFID tags are attached to lithium batteries in advance, before the batteries enter the recycling facility. This preliminary action ensures that when batteries are loaded onto collection vehicles or placed in containers, they are already tagged and can be detected immediately by RFID readers mounted on vehicles or at entry points, enabling early warning before batteries reach conveyorized handling stations where detection would be too late.
Solution Approach 2:
The mechanical conveyor-based detection system is replaced with electromagnetic RFID detection that can be deployed on mobile vehicles. This substitution enables detection to occur at multiple locations including during loading and transport, providing earlier warning than fixed conveyor stations and allowing facilities to respond to potential hazards before batteries enter high-risk areas.
4Reliability
If RFID tags with active transmitters are used, then detection reliability is improved, but energy consumption increases
Solution Approach 1:
The RFID tags are designed with adjustable transmission parameters including transmit power level and signal frequency. These parameters can be optimized to achieve reliable detection at required distances while minimizing energy consumption. For example, lower transmit power can be used when detection distance is short, and higher power only when needed, balancing reliability with energy conservation.
Solution Approach 2:
Instead of continuous transmission, the active RFID tags transmit signals periodically or on-demand in response to reader queries. This periodic action reduces average energy consumption compared to continuous transmission, while still maintaining detection reliability by ensuring signals are present at appropriate intervals for the reader to detect and identify tagged batteries.
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 effectively reduces the risk of fires by accurately detecting and locating hazardous lithium ion batteries before they ignite, enabling safe handling and recycling operations.
Implementation Method 1
Each lithium battery is tagged with a radio frequency identification (RFID) tag 302. The RFID tags 302 may be active tags that transmit or passive tags that respond to transmitted signals.
Implementation Method 2
a first detector 720 oriented relative to the load arm 708 to receive a first wireless signal when the load arm 708 is in a first position P1, a second detector 730 oriented relative to the load arm to receive a second wireless signal when the load arm is in a second position P2
Data Source
AI summary
Apparatuses, methods, and systems for detecting the presence of a beacon are disclosed. An embodiment includes a vehicle that includes a load arm configured to receive a receptacle, a first detector oriented relative to the load arm to receive a first wireless signal when the load arm is in a first position, a second detector oriented relative to the load arm to receive a second wireless signal when the load arm is in a second position, and a controller configured to detect presence of a tag attached to a specific object within the receptacle based on the received signal strengths of the first wireless signal and the second wireless signal.