WiMAX Automatic Crash Notification System
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Solution Overview
Problem
Automatic crash notification systems face limitations due to the reliance on standard cell phone technology, which has limited range, compatibility issues, and variable reliability, leading to safety concerns and unpredictable costs, especially when relying on occupant-provided devices.
Innovation Solution
An automatic crash notification system utilizing a crash detection system, a wireless communication system conforming to the IEEE 802.16 standard (such as WiMAX), and a processing system that transmits crash notifications with prerecorded messages in multiple languages, along with a user communication system for occupant confirmation, ensuring reliable and cost-effective communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If standard cell phone technology is used for wireless communication, then the system can be implemented with existing technology, but the communication range is limited and compatibility issues arise
Solution Approach 1:
The system uses a dedicated wireless communication hardware unit that implements its own communication protocol independent of carrier-specific cell phone services. This universal approach allows the system to communicate with any remote location without being restricted to a single carrier's network, thereby improving both reliability and adaptability simultaneously.
2Reliability
If the system includes its own mobile cell phone hardware, then communication reliability improves, but the system flexibility is reduced and hardware complexity increases
Solution Approach 1:
The system extracts the essential communication function from complex carrier-dependent cell phone hardware and implements a simplified dedicated wireless communication unit. This extracted approach maintains communication reliability while eliminating unnecessary hardware complexity and carrier-specific dependencies.
3Adaptability or versatility
If cell phone services from different carriers are used, then carrier compatibility improves, but unpredictable costs and difficulty in entering fixed-price contracts arise
Solution Approach 1:
The system uses a dedicated wireless communication hardware unit that operates independently of carrier billing structures. This self-contained approach eliminates unpredictable per-minute or per-message charges, allowing for fixed-price contracts and predictable operational costs while maintaining carrier compatibility through protocol standardization.
Data Source
AI summary
An automatic crash notification system may include a crash detection system configured to detect a crash of a vehicle, a wireless communication system configured to wirelessly transmit a message to and wirelessly receive a message from a remote location in conformance with the IEEE 802.16 standard, and a processing system configured to transmit notice of a crash over the wireless communication system to the remote location in conformance with the IEEE 802.16 standard in response to detection of the crash by the crash detection system. The wireless communication may be configured to wirelessly transmit a message to and wireless receive a message from the remote location using WiMAX. The automatic crash notification system may include a memory system containing a first prerecorded message that includes one or more words that mean that the remote location has received notice of a crash and a user communication system configured to deliver words to an occupant of the vehicle. The processing system may be configured to cause the first prerecorded message to be communicated over the user communication system in response to receipt by the wireless communication system of an acknowledgement from the remote location that the remote location has received notice of the crash, but which does not include the first prerecorded message.