Emergency Call Detection Delay Mechanism
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Solution Overview
Problem
The increasing use of mobile telephones in emergency 911 systems complicates location determination for dispatchers, as mobile devices have non-fixed locations, necessitating verbal communication to ascertain emergency locations, and existing systems lack efficient mechanisms for notifying secondary responders without interfering with emergency service callbacks.
Innovation Solution
A device with telephone capability, including a microprocessor and memory, detects emergency calls and sends notifications to preselected recipients after a predetermined delay, allowing for secondary calls to be placed, and optionally includes location determination and feature enablement such as SMS messaging, voice mail, and call waiting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If a notification is sent immediately after a 911 call is placed, then the preselected recipient can respond quickly, but it may interfere with potential callback from emergency services personnel
Solution Approach 1:
The system performs preliminary action by detecting the 911 call and preparing the notification in advance, but delays sending it until after the emergency service callback period has elapsed. This allows the system to be ready to act quickly while avoiding interference with emergency services personnel attempting to reach the caller.
Solution Approach 2:
The notification timing is made dynamic rather than fixed. The system automatically adjusts when to send the notification based on whether the caller is still on the line with emergency services, allowing immediate notification if the call is completed voluntarily, but delayed notification if the call is interrupted or emergency services are still attempting contact.
2Reliability
If the system monitors and delays notification until emergency services callback is complete, then emergency services communication is not interfered with, but there is a delay in notifying the preselected recipient
Solution Approach 1:
The system applies partial monitoring - it detects 911 calls and monitors for their completion, but does not continuously monitor the entire duration of emergency service interactions. It implements a reasonable delay period that is sufficient to allow emergency services to attempt callbacks but not so long as to unnecessarily delay notification to the preselected recipient.
3Measurement precision
If location services are continuously active to determine device location, then location information is always available for emergency responders, but energy consumption increases
Solution Approach 1:
Instead of continuous location tracking, the system uses periodic location determination triggered by specific events - namely when a 911 call is detected or when the call is completed. This provides location information to the preselected recipient when most needed while significantly reducing energy consumption compared to continuous GPS or location service operation.
Data Source
AI summary
Systems and methods are provided for enabling communication between a service provider and a telephone user in conjunction with a call placed by the user. A call from the user to a particular telephone number, for example an emergency services number, is detected, and a notification is sent to a preselected recipient indicating that the call has been placed. The preselected recipient may be, for example, a private response center operated by a provider of personal health or other services to the user. A predetermined delay time may be allowed to elapse before the preselected recipient is notified of the call to the emergency services number. The preselected recipient may place a second call in reaction to the notification, for example the preselected recipient may call the user on his or her telephone.