Disaster Notification Server Location Detection
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Solution Overview
Problem
Existing disaster notification systems using portable electronic devices do not effectively provide disaster information to users located in affected areas or to their acquaintances, such as family or relatives, unless the device is registered within the specific area.
Innovation Solution
A server-based system that receives location indications from subscribed devices, detects when a device is in a disaster area, and transmits disaster alerts to both the device and its registered friends, enabling real-time notification of users regardless of their location.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If disaster notification is provided only to devices located in the disaster area, then notification precision is improved, but notification coverage deteriorates
Solution Approach 1:
The patent extends notification from a single spatial dimension (disaster area location) to multiple dimensions by including both the user's current location and the locations of registered acquaintances. This dimensional expansion allows the system to notify users about disasters occurring in areas where their acquaintances are located, thereby increasing notification coverage while maintaining precision through location-based targeting.
2Speed
If location-based notification is implemented, then notification speed is improved, but system complexity deteriorates
Solution Approach 1:
The patent implements preliminary action by having users register their acquaintances in advance before a disaster occurs. The system stores these pre-registered relationships and uses them during disaster notification, eliminating the need for complex real-time relationship detection and reducing system complexity while maintaining fast notification speed.
3Reliability
If acquaintance registration is required for notification, then notification reliability is improved, but ease of operation deteriorates
Solution Approach 1:
The patent applies self-service by allowing users to independently register their own acquaintances through a simple interface on their portable device. The system automatically manages the registration data and uses it for notifications, reducing the operational burden on users while ensuring reliable notification through user-defined acquaintance relationships.
Data Source
AI summary
A server is provided comprising a processor configured to: receive an indication of a location of a first device that is subscribed to a disaster notification service; in response to receiving a disaster alert, detect that the first device is located in an area associated with the disaster based on the indication of the location of the first device; identify a second device that has registered the first device as a friend; and transmit a first indication of the disaster to the first device and a second indication of the disaster to the second device.