Dual Modem Vehicle Communication for Emergency Data Transmission
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Solution Overview
Problem
Existing vehicle communication systems face challenges in reliably transmitting information offboard a vehicle, especially in safety-critical situations, as they often rely on single communication methods and may experience poor cellular coverage, reducing the likelihood of intended recipients receiving critical vehicle location data.
Innovation Solution
A vehicle system equipped with two embedded modems and a processor that identifies predetermined events, such as accidents, to wirelessly transmit vehicle location data via voice calls and data calls, as well as text messages to multiple remote monitoring services, utilizing different cellular network providers and communication services to enhance the chances of successful data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single communication method is used to transmit vehicle location data, then the system complexity is reduced, but the reliability of transmission is worsened due to poor cellular coverage and single point of failure
Solution Approach 1:
The communication system is segmented into multiple independent communication modules (first communication module and second communication module) that operate in parallel. Each module uses different communication technologies (e.g., cellular and satellite) to transmit vehicle location data, ensuring that if one communication path fails, the other can still deliver critical information, thereby improving transmission reliability without creating a single point of failure.
Solution Approach 2:
The system changes the communication parameter by using multiple different communication technologies and protocols simultaneously. By diversifying the communication methods (e.g., switching between cellular networks and satellite communication), the system adapts to varying coverage conditions and improves the likelihood of successful data transmission in areas with poor cellular coverage.
2Reliability
If multiple communication methods are used to transmit vehicle location data, then the reliability of transmission is improved, but the device complexity is worsened due to multiple modems and communication protocols
Solution Approach 1:
The communication system is designed with multi-functionality where the vehicle can perform multiple communication tasks simultaneously using different modules. The first communication module handles primary cellular communication while the second communication module provides backup through alternative technologies. This universal design allows the system to adapt to various communication environments and maintain reliability without requiring completely separate systems for each communication method.
Solution Approach 2:
The system implements prior cushioning by pre-configuring multiple communication modules and establishing backup communication paths before transmission failures occur. The redundant communication infrastructure is prepared in advance, so when cellular coverage is poor or a communication failure occurs, the system can immediately switch to alternative communication methods without delay, cushioning against potential transmission failures.
3Reliability
If redundant communication systems are deployed, then the likelihood of successful transmission is improved, but the cost and resource consumption are worsened
Solution Approach 1:
The communication system operates dynamically by actively monitoring signal strength and communication quality in real-time. The system can switch between active and standby states for different communication modules, activating the backup communication module only when the primary module experiences poor signal conditions or transmission failures. This dynamic operation reduces energy consumption compared to continuously operating all communication modules at full power, while still maintaining high transmission reliability when needed.
Data Source
AI summary
Systems and methods for generating multiple vehicle communications in response to an event include a vehicle having a first embedded modem, a second embedded modem, and a processor. The processor is configured to identify occurrence of a predetermined event. Responsive to occurrence of the predetermined event, the processor is configured to wirelessly transmit a vehicle location offboard the vehicle via a voice call established by the first embedded modem and via a data call established by the second embedded modem for a remote monitoring service.