Vehicle Charging Safety Sensor Rotation Control
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Solution Overview
Problem
Electric vehicles and hybrid vehicles face challenges in efficiently monitoring and managing the charging process, particularly in preventing malfunctions due to unplugging during stationary charging, which can lead to increased wear on sensor and control devices.
Innovation Solution
A safety device with at least one first sensor device and one second sensor device, coupled to a control device that deactivates the second sensor during charging and actuates an actuator if movement is detected, using a rotation method to alternate sensor activation and reduce operational time, thereby preventing malfunctions and extending sensor and control device lifespan.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple sensor devices are continuously activated to monitor vehicle movement during charging, then measurement precision and reliability are improved, but device complexity and operational wear increase
Solution Approach 1:
The patent implements periodic switching between multiple sensor devices (e.g., accelerometers, gyroscopes) during charging mode. Instead of continuously activating all sensors, the control device alternates between different sensor devices at predetermined intervals, achieving reliable monitoring while reducing overall operational wear and simplifying sensor management.
Solution Approach 2:
The monitoring function is segmented across multiple sensor devices that are activated in alternating sequences. Each sensor device handles monitoring duties for specific time periods, dividing the continuous monitoring task into discrete segments that reduce the burden on individual sensors and overall system complexity.
2Measurement precision
If all sensor devices remain active during charging, then detection precision is maintained, but operational time and wear on sensors increase
Solution Approach 1:
Sensor devices are activated in periodic cycles during charging mode rather than continuously. The control device switches between different sensor devices at predetermined time intervals, ensuring that movement detection precision is maintained through regular monitoring while significantly reducing the cumulative operational time and wear on individual sensor devices.
Solution Approach 2:
After a sensor device completes its monitoring cycle during charging, it is deactivated and allowed to recover. The system recovers sensor resources by switching to alternative sensors, enabling previously active sensors to remain inactive and reduce wear while the system maintains monitoring capability through other active sensors.
3Duration of action of stationary object
If sensor devices are frequently switched during charging, then device lifespan is extended, but control complexity increases
Solution Approach 1:
The control device implements a predetermined periodic switching schedule between sensor devices during charging mode. This regular, time-based activation pattern extends sensor device lifespan by reducing continuous operational stress while maintaining relatively simple control logic based on fixed time intervals rather than complex real-time decisions.
Solution Approach 2:
The control device manages sensor switching autonomously based on predetermined charging mode parameters and time intervals. The system self-regulates sensor activation without requiring complex external intervention, extending sensor lifespan through automated periodic switching while keeping control complexity manageable through rule-based operation.
4Reliability
If continuous monitoring with multiple sensors is implemented, then reliability is improved, but energy consumption increases
Solution Approach 1:
Multiple sensor devices are activated in alternating periodic cycles during charging mode rather than continuously. This approach maintains charging safety reliability through regular monitoring by at least one active sensor while significantly reducing total energy consumption by ensuring that not all sensors operate simultaneously or continuously throughout the charging process.
Data Source
AI summary
The present invention relates to a safety apparatus (20) for monitoring charging of an electrical energy store in a motor vehicle (100), having at least one first sensor device (21a) and at least one second sensor device (21b), the two of which are each designed to capture motion data for the motor vehicle (100) and to provide said motion data as a sensor signal; and a control device (25) that is coupled to the at least one first sensor device (21a) and to the at least one second sensor device (21b) and that is designed to deactivate the at least one second sensor device (21b) while the electrical energy store is being charged and, if the control device (25) detects motion of the motor vehicle (100) on the basis of one of the provided sensor signals, to actuate at least one actuator device (30) of the motor vehicle (100) in order to brake the motor vehicle (100).