Emergency Communication Node Using LoRa and Wi-Fi Hotspot
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
During emergencies, normal communication systems like cellular networks can be disrupted due to power loss or increased demand, hindering the assessment of community needs and resource allocation.
Innovation Solution
Emergency communication hardware nodes utilizing a long-range low-bandwidth radio channel, such as LoRa, and a Wi-Fi access point to facilitate communication between an emergency communications center and user devices, enabling communication even without cellular networks, with a captive portal for reporting needs and requiring minimal power for extended operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cellular networks are used for emergency communication, then communication capability is improved, but reliability deteriorates when power is lost or demand increases
Solution Approach 1:
The patent introduces intermediary devices (emergency communication devices, message boards, portable hotspots) that act as mediators between users and the emergency response center. These intermediaries can operate independently of cellular networks, using alternative communication channels like Wi-Fi, Bluetooth, or direct radio frequency communication, thereby ensuring communication reliability when cellular infrastructure fails.
Solution Approach 2:
The communication system is segmented into multiple independent components: user devices, intermediary emergency communication devices, portable hotspots, and the emergency response center. This segmentation allows different parts of the system to operate independently through multiple communication protocols, so if one path fails (cellular), other paths (Wi-Fi, direct radio) can maintain communication.
2Loss of information
If high-bandwidth communication channels are used, then information transmission capability is improved, but power consumption increases
Solution Approach 1:
The system implements partial action by transmitting only essential emergency information rather than full-bandwidth data streams. Message boards use low-bandwidth display technologies (e-ink, segmented LCD) that consume minimal power, and communication protocols are designed to send only critical data (location, emergency type, basic status) rather than comprehensive information, thereby reducing power consumption while maintaining essential information transmission capability.
Solution Approach 2:
The system dynamically changes communication parameters based on battery status and emergency urgency. When battery power is low, the device switches to lower-bandwidth modes, reduces transmission frequency, and uses sleep modes more aggressively. The message board adjusts refresh rates and display brightness to minimize power consumption while maintaining readability of essential emergency information.
Data Source
AI summary
Emergency response by facilitating communication between an emergency communications center and user devices. Such user devices may be highly available without special training, such as cell phones. Furthermore, such communication is available even without the use of a cellular network. Thus, even in emergencies in which cellular communication is no longer possible, individuals can communicate their emergency needs and situation to an emergency communications center, allowing that center to gain a holistic, comprehensive, and fresh understanding of the needs of the community. The communication center can thereby coordinate with capable individuals and resources within the community to help address those needs.