In-Vehicle Security Mode Switching for Battery-Safe Threat Monitoring
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing dashcams are limited to operating only when the vehicle's engine is running, as they rely on the vehicle's battery power, which can be depleted if used when the engine is off, preventing continuous recording and monitoring when the vehicle is stationary.
Innovation Solution
An in-vehicle security system that operates in multiple modes, including a low-power mode for routine monitoring and higher-power modes for significant events, conserving battery life by transitioning based on sensor inputs and power thresholds, and utilizing sensors like radar and cameras for threat detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If the dashcam operates continuously when the vehicle engine is off, then monitoring coverage is improved, but battery power is depleted
Solution Approach 1:
The system dynamically adjusts its operational state based on power availability and threat level. It transitions between low-power idle mode, high-power security mode, and shutdown state, allowing continuous monitoring capability while adapting power consumption to battery conditions and security requirements
Solution Approach 2:
The system changes operational parameters (power consumption level, sensor activation, processing intensity) based on detected conditions. When threats are detected or battery power is sufficient, the system increases monitoring intensity and power usage; otherwise, it reduces to low-power mode to extend operational duration
2Measurement precision
If the sensor operates at high resolution continuously, then detection accuracy is improved, but power consumption increases
Solution Approach 1:
The system applies partial action by operating sensors at reduced resolution during normal conditions and only activating full high-resolution detection when threats are detected or during critical security events. This provides sufficient detection accuracy for routine monitoring while dramatically reducing power consumption
Solution Approach 2:
The system uses periodic scanning at low resolution combined with intermittent high-resolution detection triggered by specific events or time intervals. This periodic approach maintains adequate monitoring coverage while limiting high-power operation to necessary moments only
Data Source
AI summary
A security system for an in-vehicle digital video recorder, comprising a sensor and a processing resource, the security system operative in: a first mode in which the sensor is operative at a first resolution; and a second mode in which the sensor is operative at a second resolution higher than the first resolution; the security system operative to receive signals from the sensor; wherein in the first mode the security system invokes the second mode responsive to a sensor signal exceeding a threshold value; and wherein in the second mode the processing resource monitors to determine if a security threat criterion is satisfied based on a received sensor signal.