Vehicle Accident Notification Fallback Across HTTP, SMS, and Calls
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Solution Overview
Problem
Existing vehicle accident notification systems fail to reliably notify authorities of an accident when the wireless network is down or not functioning correctly, leading to a low success rate in emergency rescue requests.
Innovation Solution
A device and method that utilize a communication device equipped in vehicles to transmit and retransmit accident notifications through multiple communication mediums, such as HTTP, SMS, and call connections, based on signal strength, and link the notification with vehicle location sharing services to ensure successful delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single communication medium is used for transmitting accident notifications, then the device complexity is low, but the reliability of notification delivery deteriorates when the wireless network is down
Solution Approach 1:
The communication system is segmented into multiple independent communication mediums (HTTP, SMS, call connections) with different priorities. Each medium operates independently and can be selected based on availability, ensuring that failure of one medium does not prevent notification delivery entirely.
Solution Approach 2:
The system dynamically changes communication parameters by selecting different communication mediums based on signal strength and network conditions. When HTTP fails, it transitions to SMS; when SMS fails, it transitions to call connections, adapting to changing environmental conditions to maintain reliable notification delivery.
2Reliability
If multiple communication mediums are used for retransmission, then the reliability of notification delivery is improved, but the device complexity increases
Solution Approach 1:
The system performs preliminary actions by establishing a priority order for different communication mediums before actual notification delivery. The controller is pre-configured with the sequence (HTTP > SMS > call connections) and signal strength thresholds, enabling automatic fallback without complex real-time decision-making logic.
Solution Approach 2:
The controller acts as an intermediary that manages the transition between different communication mediums. It monitors signal strength and transmission success, automatically selecting the appropriate medium based on pre-established criteria, thereby simplifying the overall system architecture while maintaining high reliability.
3Reliability
If retransmission attempts are made based on signal strength, then the notification delivery reliability is improved, but the loss of time increases due to multiple reattempts
Solution Approach 1:
The system dynamically adjusts the number of retransmission attempts based on real-time signal strength conditions. When signal strength exceeds the threshold, more retransmission attempts are allowed; when signal strength is below the threshold, fewer attempts are made and the system transitions to alternative communication mediums, optimizing the balance between reliability and time loss.
Solution Approach 2:
The system employs periodic action by attempting notifications at regular intervals across different communication mediums. Instead of continuous retrying on a single medium, it systematically cycles through HTTP, SMS, and call connections with defined intervals, ensuring timely delivery while preventing excessive time consumption.
4Adaptability or versatility
If the notification system operates without linking to location sharing services, then the device complexity is low, but the adaptability to different emergency situations deteriorates
Solution Approach 1:
The notification system is merged with the location sharing service to create an integrated emergency response system. When an accident is detected, the system simultaneously transmits both the accident notification and the vehicle location information to the emergency contact, enabling more effective emergency response without requiring separate systems.
Solution Approach 2:
The communication device is designed with multi-functionality, serving both as an accident notification system and a location sharing service. This universal design allows the same hardware and communication infrastructure to perform multiple functions, increasing adaptability to different emergency situations while minimizing additional device complexity.
Data Source
AI summary
A device and method are configured to provide a notification of an occurrence of a vehicle accident when an airbag is deployed. The device acquires an intensity of a signal received from a server for at least one communication medium, transmits a notification including information on an occurrence of an accident to the server when an airbag of a vehicle is deployed, and retransmits the notification based on the intensity of the received signal when the transmission of the notification has failed. When the transmission of the notification including the information on the occurrence of the accident has failed because a wireless network communication is not operating correctly, wireless communication connection may be reattempted the appropriate number of times to increase a success rate.