Vehicle Telematics Dual-Modem Switching for Battery-Aware Connectivity
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Solution Overview
Problem
Recreational vehicles lack effective communication and monitoring systems that can adapt to different operating modes and battery states, leading to inefficient energy management and limited connectivity options.
Innovation Solution
The development of an intercept circuit for vehicles that includes a controller to manage signal transmission based on operating modes, a telematics control unit with dual cellular modems for high-power and low-power connectivity, and a method for configuring vehicle states based on battery state of charge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single cellular modem is used for vehicle connectivity, then device complexity is reduced, but adaptability to different power states is limited
Solution Approach 1:
The system divides the connectivity function into two separate cellular modems: a first cellular modem for high-power states and a second cellular modem for low-power states. This segmentation allows each modem to be optimized for its specific power state, improving overall adaptability while managing complexity through functional separation.
Solution Approach 2:
The system dynamically selects which cellular modem to use based on the vehicle's power state. The controller switches between the first and second modems depending on whether the vehicle is in high-power or low-power mode, enabling adaptability without requiring both modems to operate simultaneously, thus managing complexity.
2Reliability
If vehicle connectivity is maintained continuously, then communication reliability is improved, but energy consumption increases
Solution Approach 1:
The system dynamically adjusts connectivity behavior based on power state. In high-power states, the first modem maintains continuous reliable communication. In low-power states, the second modem provides periodic or event-triggered communication, reducing energy consumption while maintaining essential connectivity reliability.
Solution Approach 2:
The second cellular modem operates periodically or on-event in low-power states rather than continuously, reducing energy consumption while maintaining sufficient communication reliability for monitoring and control functions.
3Productivity
If high-power connectivity mode is used continuously, then communication performance is improved, but battery life is reduced
Solution Approach 1:
The system dynamically switches between high-power and low-power modem modes based on operational requirements. High-performance communication is used only when necessary (high-power states), while low-power mode extends battery life during routine operations, optimizing the balance between productivity and duration.
Solution Approach 2:
The system changes operational parameters by switching between different modem power states. The first modem operates at high power for performance-critical tasks, while the second modem operates at low power for extended duration, allowing the system to adapt communication performance to match actual needs and extend battery life.
Data Source
AI summary
Systems and methods for vehicle communication are provided, for example to provide various connectivity and functionality according to hardware availability, power constraints, and environmental conditions, among other examples.