UWB Vehicle Emergency Call Detection Without Airbag Deployment
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Solution Overview
Problem
Existing emergency call systems in vehicles may fail to automatically request rescue when airbags are not deployed, and drivers may not know how to use them, leading to difficulties in obtaining timely rescue services.
Innovation Solution
An emergency call system utilizing ultra-wideband (UWB) communication to detect sudden movements of a mobile device within a vehicle, combining vehicle speed and position changes to determine emergency situations, and automatically sending an alarm and rescue request to a rescue center.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional emergency call systems rely on airbag deployment detection, then the system structure is simple, but the system fails to detect emergencies when airbags are not deployed
Solution Approach 1:
The patent combines multiple detection methods (airbag deployment detection, mobile device position change detection via UWB, and vehicle speed change detection) into a unified emergency call system. This merging allows the system to detect emergencies comprehensively, whether airbags deploy or not, while maintaining reasonable system complexity through integrated processing.
Solution Approach 2:
The emergency call system is designed to serve multiple detection scenarios: it can detect emergencies through airbag deployment, mobile device position changes, and vehicle speed changes. This multi-functionality ensures reliable emergency detection across various accident types without requiring separate systems for each detection method.
2Ease of operation
If emergency call systems require manual activation, then the system structure is simple, but drivers may not know how to use them in emergencies
Solution Approach 1:
The system implements automatic emergency detection and alarm activation through multiple sensors (airbag sensors, UWB position tracking, speed change detection). When an emergency is detected, the system automatically triggers the alarm and sends rescue requests without requiring driver intervention, making the system easy to use while maintaining sophisticated detection capabilities.
Solution Approach 2:
The system pre-configures emergency response protocols and continuously monitors for emergency conditions. When thresholds are met (airbag deployment, position change, or speed change), the system automatically executes the emergency response sequence, eliminating the need for driver training or manual activation decisions during critical moments.
3Measurement precision
If the system uses multiple detection parameters (position change, speed change), then emergency detection accuracy is improved, but the device complexity increases
Solution Approach 1:
The patent introduces a central control unit as an intermediary that coordinates multiple detection parameters (airbag status, UWB position data, speed sensor data). This central processor integrates information from various sensors, applies detection thresholds, and makes emergency determination, thereby improving detection accuracy while managing system complexity through centralized intelligence.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Ensures accurate detection of emergency situations, provides real-time alerts, and facilitates automatic rescue requests, enhancing safety and convenience by ensuring timely rescue services.
Implementation Method 1
a mobile device 300 including a UWB communication module and capable of transmitting and receiving a UWB communication signal
Data Source
AI summary
An emergency call system and method are based on wireless technology such as ultra-wideband (UWB). The emergency call system includes a mobile device including a communication module for transmitting and receiving a communication signal, an on-vehicle communication device including a processing module and a plurality of on-board communication modules, a vehicle speed detection device configured to detect a vehicle speed, and a main control device communicatively connected to the on-vehicle communication device and the vehicle speed detection device, where the main control device is configured to determine whether an emergency situation occurs based on position change information of the mobile device and a change of the vehicle speed, and send an alarm signal from a vehicle when it is determined that the emergency situation has occurred.