Event Data Recorder Selective Parameter Recording
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Solution Overview
Problem
Conventional event data recorders (EDRs) face memory limitations, inefficiently recording the same parameters for all events and wasting memory on unneeded data, which restricts the number of events and parameters that can be recorded.
Innovation Solution
An EDR system with an event identification module, parameter selection module, and event recorder module that identifies specific events and selects relevant parameters to record, allowing for efficient memory usage by recording only necessary data, activated by a driver input device to record events of interest.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If conventional EDRs record the same parameters for all events, then all events are captured uniformly, but memory is wasted on unneeded data and the number of recordable events is restricted
Solution Approach 1:
The patent applies local quality by selecting different parameters to record based on the specific event type. Instead of uniformly recording all parameters for all events, the system identifies the event type (e.g., crash, hard braking, door opening) and selectively records only the relevant parameters for that specific event, thereby optimizing memory usage while capturing necessary data.
Solution Approach 2:
The patent changes the recording parameters dynamically based on the detected event type. The system monitors vehicle operations, identifies specific events, and adjusts which parameters are recorded accordingly. This parameter adaptation allows the EDR to capture diverse event types with limited memory by recording only the most relevant data for each event category.
2Loss of information
If EDRs continuously record all parameters, then complete vehicle data is captured, but memory limitations are exceeded and recording efficiency decreases
Solution Approach 1:
The patent extracts and records only the essential parameters needed for analyzing specific vehicle events. By identifying the event type first and then selecting only the relevant parameters for that event, the system removes unnecessary data from the recording process, thereby maintaining information completeness for the specific event while significantly improving memory efficiency and recording productivity.
3Adaptability or versatility
If EDRs use fixed recording parameters, then system complexity is reduced, but adaptability to different event types is limited
Solution Approach 1:
The patent implements a dynamic parameter selection system that adapts the recorded parameters based on the detected event type. The system continuously monitors vehicle operations, identifies specific events (such as crashes, hard braking, or door openings), and dynamically adjusts which parameters are recorded. This dynamic approach enhances adaptability to different event types while maintaining manageable system complexity through event-driven parameter selection.
Data Source
AI summary
An event data recorder (EDR) system includes an event identification module, a parameter selection module, and an event recorder module. The event identification module identifies occurrences of a first event and second event of M predetermined events based on operating conditions of an automotive vehicle. The parameter selection module selects a first set of parameters to record from N predetermined parameters when the first event occurs. The parameter selection module selects a second set of parameters to record from the N predetermined parameters when the second event occurs. The event recorder module records data corresponding to the first set of parameters when the first event occurs and records data corresponding to the second set of parameters when the second event occurs. M and N are integers greater than 1 and the first set includes at least one parameter that is different from the parameters included in the second set.