Vehicle Emergency Call System Dynamic Data Transmission
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Solution Overview
Problem
Current emergency call systems for vehicles transmit data only once at the beginning of an emergency call, failing to account for changing conditions such as occupants leaving the vehicle, and do not allow for real-time data requests during the call.
Innovation Solution
An emergency call device that allows for continuous data transmission via a voice channel, enabling operators to request and receive measurement data at any time during the call, with the vehicle itself initiating data transmission if conditions change, and supporting text-to-speech conversion for flexible data exchange.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data is transmitted only once at the beginning of the emergency call, then the communication flow is simple and voice mode can be established quickly, but the system cannot detect changing conditions such as occupants leaving the vehicle
Solution Approach 1:
The system transitions from a static data transmission model (one-time transmission) to a dynamic model where data can be transmitted multiple times based on changing conditions. The control unit enables flexible switching between voice mode and data transmission mode, allowing the system to adapt to evolving emergency situations while maintaining operational simplicity through operator-initiated requests.
2Ease of operation
If the system switches to voice mode after initial data transmission, then real-time communication between operator and occupant is enabled, but additional measurement data cannot be transmitted during the call
Solution Approach 1:
The system implements a feedback mechanism where the operator can request additional measurement data during the voice call by sending a trigger signal to the vehicle's control unit. This allows the system to maintain continuous voice communication while enabling on-demand data transmission, ensuring both real-time communication and access to updated information without losing either function.
3Loss of information
If all measurement data is transmitted before the emergency call starts, then the operator receives complete information upfront, but the data may not reflect current conditions during the call
Solution Approach 1:
The system performs preliminary data transmission at the start of the emergency call to ensure the operator receives complete initial information. Simultaneously, it maintains the capability to transmit updated data on-demand during the call, eliminating the need to wait for the next scheduled transmission cycle and reducing the time delay for receiving current condition information.
Data Source
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Figure 3
AI summary
According to one embodiment of the invention, an emergency call device for a vehicle is provided, by which means a data record is produced when a certain event occurs, said data record then being transmitted during the emergency call. The event can be an external request from an operator or a trigger signal inside a vehicle. In this way, the operator can obtain the most recent information at any point during the emergency call.