RF-PASS Network Positioning for Distressed Responder Location
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Solution Overview
Problem
During emergency operations like fire ground operations, incident commanders face challenges in locating and rescuing distressed firefighters due to limited visibility and information, which can delay rescue efforts.
Innovation Solution
A network of RF-PASS units worn by firefighters that transmit neighbor table information, including link quality indications, to a base station, allowing the incident commander to determine the relative positions of responders and quickly assign nearby responders to assist a distressed colleague.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the incident commander positions themselves in an exterior position to get an overall view of the fire scene, then they can see two sides of the structure, but they cannot see inside the structure, thereby hindering oversight
Solution Approach 1:
The patent introduces RF-PASS units and a base station as intermediary systems to transmit position and status information from firefighters inside the structure to the incident commander. This mediator system bridges the information gap created by the IC's limited visual access, allowing comprehensive oversight without compromising the exterior positioning advantage.
Solution Approach 2:
The system implements continuous feedback by having firefighters wear RF-PASS units that constantly transmit their location, status, and environmental data back to the base station, which then provides this information to the incident commander. This real-time feedback loop compensates for the lack of direct visual observation.
2Reliability
If the incident commander relies on radio communication to locate a distressed firefighter, then communication is possible, but the rescue plan is based on limited information, which may delay rescue operations
Solution Approach 1:
The system performs preliminary actions by continuously tracking and recording the position and status of all firefighters before distress occurs. When a PASS alarm is triggered, the pre-collected data about the firefighter's location, movement history, and environmental conditions is immediately available, eliminating the need for time-consuming location searches and enabling instant rescue planning.
Solution Approach 2:
The patent replaces the manual radio communication and human assessment process with an automated electronic system that uses RF signals, processors, and display devices to automatically determine firefighter positions and generate rescue information, significantly reducing the time required compared to manual radio-based location methods.
3Ease of operation
If the incident commander makes an assessment based on limited radio information, then a rescue plan can be formulated, but the plan may be delayed due to insufficient data about responder positions
Solution Approach 1:
The system transforms the nature of information available to the incident commander by changing parameters from qualitative radio descriptions to quantitative precise location data. The RF-PASS units provide specific coordinates, distance measurements, and directional information, converting vague positional awareness into precise, actionable data that greatly enhances rescue planning efficiency and accuracy.
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 faster and more informed rescue operations by providing the incident commander with real-time positioning and communication link quality data, facilitating quicker response to distressed firefighters.
Implementation Method 1
multiple radio frequency (RF) personal alert safety system (PASS) consisting of multiple portable RF-PASS units
Implementation Method 2
Within the neighbor table information is one or more link quality indications of the RF-PASS unit with respect to one or more (neighboring) RF-PASS units in the network. The link quality indications may provide an approximate estimation of distance.
Data Source
AI summary
A monitoring unit for wireless communication with a plurality of self-contained breathing apparatus (SCBA) units configured to form a network is provided. The monitoring unit includes a communication interface and processing circuitry. The processing circuitry is configured to receive, via the communication interface, a plurality of updates from each of the SCBA units where each update includes information indicating at least one communication link quality to at least one other SCBA unit. The processing circuitry is further configured to determine at least one distance from each SCBA unit to at least one other SCBA unit that is one hop away in the network based at least in part on the communication link quality. The processing circuitry is further configured to cause the determined at least one distance to be displayed.