Context-Aware Safety Alerts for Direct AV-Pedestrian Communication
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Autonomous vehicles (AVs) lack effective communication methods with pedestrians and other road users, making it difficult for individuals to alert AVs of their presence or request safety actions, especially in emergency situations, leading to potential accidents.
Innovation Solution
A safety device equipped with a wireless transceiver, processors, and sensors that determines its context and configures alerts to be broadcast to nearby AVs, allowing users to manually or automatically adjust alert properties based on situational information, enabling direct communication and requesting safety actions from AVs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If AVs rely on external sensors and databases to detect road users, then the system can operate autonomously without human intervention, but the detection reliability is insufficient in edge cases and emergency situations
Solution Approach 1:
The patent introduces a wearable safety device as an intermediary between road users and AVs. This device actively transmits presence information to AVs, serving as a mediator that bridges the detection gap. The safety device includes a transmitter that sends signals to AV sensors, and can display AV-detected information back to the user, creating a two-way communication channel that enhances detection reliability without compromising AV autonomy
Solution Approach 2:
The safety device performs preliminary actions by proactively transmitting presence information to AVs before the AVs can detect the users through their external sensors. The device continuously broadcasts location and status data, ensuring that AVs have advance notice of road user presence, particularly in situations where sensor detection might fail or be delayed
2Reliability
If pedestrians wear safety garments to increase visibility, then detection reliability improves, but ease of operation deteriorates due to impracticality and unavailability
Solution Approach 1:
The safety device is designed as a universal wearable that can be used by various types of road users including pedestrians, cyclists, and persons with disabilities. It integrates multiple functions: active transmission of presence information, display of AV-detected data, emergency alert capabilities, and compatibility with different mobility scenarios. This multi-functionality makes it a versatile alternative to specialized safety garments
Solution Approach 2:
The patent replaces passive mechanical safety garments (reflective vests, high-visibility clothing) with an active electronic system. Instead of relying on passive reflectivity or visual cues, the safety device uses electronic transmitters and wireless communication to actively convey presence information to AVs, substituting mechanical/optical methods with electronic communication
3Loss of information
If AVs use sophisticated algorithms and AI systems to process sensor data, then detection capability improves, but loss of information occurs because AVs cannot receive direct communication from road users
Solution Approach 1:
The safety device implements feedback mechanisms in two directions: (1) It receives and displays information from AV sensors back to the user, allowing them to verify detection status; (2) It transmits user presence and status information back to AVs, creating a closed-loop communication system. This feedback reduces information loss by ensuring both parties have accurate awareness of each other's state
Data Source
AI summary
A context-aware safety device includes a wireless transceiver, a memory storing an application, and one or more processors. When executing the application, the one or more processors are configured to determine a context of a safety device, configure an alert based on the determined context, and broadcast the configured alert using the wireless transceiver.