Aggregating Mobile Event Messages for Vehicle Detection
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Solution Overview
Problem
Mobile terminal devices, such as smartphones and navigation systems, lack the comprehensive sensor information available in vehicle-mounted systems, leading to reduced detection accuracy for imminent events like road signs and curves, especially in adverse conditions like fog or darkness, due to fewer and lower-quality sensors and unknown mounting positions.
Innovation Solution
A method where multiple mobile terminal devices transmit data to a central server to aggregate event messages and assess their plausibility based on temporal and spatial relations, utilizing the fact that similar ambient conditions prevail in the vicinity of an event, thereby enhancing detection accuracy and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If mobile terminal devices are used for event detection, then device complexity and ease of operation are improved, but measurement precision and reliability deteriorate due to fewer and lower-quality sensors
Solution Approach 1:
The patent combines sensor data from multiple mobile terminal devices to form a collective detection result. By merging observations from multiple devices detecting the same event (e.g., road sign, curve), the system compensates for the limited sensor capabilities of individual devices, achieving detection accuracy comparable to vehicle-mounted systems while maintaining the ease of using mobile devices.
2Adaptability or versatility
If mobile terminal devices are used for event detection, then adaptability is improved, but reliability deteriorates due to unknown mounting positions and fewer sensors
Solution Approach 1:
The system implements a feedback mechanism where detection results from multiple mobile terminal devices are transmitted to a central server, evaluated against expected event patterns, and used to determine whether to output event messages. This feedback loop compensates for the unknown mounting positions and limited sensors by validating detections through multiple independent observations before triggering warnings.
3Reliability
If multiple event messages are aggregated from distributed devices, then reliability is improved, but device complexity and information processing requirements increase
Solution Approach 1:
The patent introduces a central server as an intermediary that receives, aggregates, and evaluates event messages from multiple mobile terminal devices. This intermediary handles the complex tasks of data fusion, plausibility assessment, and event message generation, allowing individual mobile devices to remain simple while achieving reliable collective detection through the coordinating intermediary.
Data Source
AI summary
A method for providing an event message indicative of an imminent event for a vehicle. In a first step, a first event message and a second event message are initially received. The first event message represents a signal output by a first mobile terminal device in response to the imminent event; and the second event message represents a signal output by a second mobile terminal device in response to the imminent event. In a further step, an aggregated event message is generated on the basis of the first event message and the second event message. A step follows for ascertaining a plausibility value to check the plausibility of the aggregated event message. Finally, the aggregated event message and the plausibility value are output. The aggregated event message and the plausibility value represent a signal that is receivable from at least one mobile playback device.