Sensor Bus System Internal Event Verification
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Solution Overview
Problem
Existing sensor systems lack sufficient confidence in event detection, particularly in critical safety scenarios like airbag deployment, leading to potential injuries and accidents due to inadvertent deployments.
Innovation Solution
Incorporating internal event verification within the sensor bus system through channel master and slave components, including channel monitoring sensors, self-verifying sensors, and event verification controllers, which analyze and confirm sensor data to ensure accurate event detection before triggering responses.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If redundancy is added to sensor systems through multiple sensors, on-board sensors, or event verification controllers, then reliability of event detection is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple verification functions (channel monitoring, event verification, sensor monitoring) into a single integrated sensor bus unit. This merging approach maintains high reliability through multiple verification layers while reducing overall system complexity by consolidating previously separate components into one unified device that interfaces with the sensor bus.
Solution Approach 2:
The sensor bus unit performs multiple functions simultaneously: it monitors sensor data, verifies events, monitors communication channels, and provides redundant verification. This multi-functionality allows the system to achieve high reliability without adding separate dedicated components for each function, thereby managing complexity while maintaining detection confidence.
2Reliability
If multiple layers of verification are implemented within the sensor bus system, then confidence in sensor results is enhanced, but response time may be increased
Solution Approach 1:
The sensor bus unit performs verification actions preliminarily by continuously monitoring sensor data and pre-verifying events before they need to be acted upon. This preliminary verification ensures that when an event occurs, the system has already established confidence in the sensor results, enabling faster response without sacrificing reliability.
Solution Approach 2:
The system maintains continuous monitoring and verification of sensor data through the sensor bus unit, which operates continuously to verify events as they occur. This continuous verification ensures that confidence in sensor results is maintained without interruption or delay, allowing immediate response when events are detected.
Data Source
AI summary
Internal event verification is enabled in sensor bus systems. One example sensor bus system includes a channel master component and one or more channel slave components. A first subset of the channel slave components can include sensors that sense one or more properties (e.g., acceleration) associated with an event (e.g., crash) and output sensor data based on the one or more sensed properties. A second subset of the channel slave components can include channel verification components that can receive, decode, and analyze at least a portion of the sensor data, and output event data indicating whether an event occurred based on the analyzed portion of the sensor data. The channel master component can receive and decode the sensor data and the event data, and output information to a controller, which can send a signal to initiate a response (e.g., airbag deployment) when an event is detected and verified.