Keyless Dual Power Control for EV Infotainment and Powertrain ECU
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Solution Overview
Problem
There is a need for an improved method and system for keyless dual power system control in electric motor vehicles, particularly in the context of wireless authentication and the integration of electric motors, which ensures secure and efficient control of powertrain and infotainment systems based on user presence and vehicle status.
Innovation Solution
A keyless dual power control system for electric motor vehicles that includes a power control module utilizing wireless authentication, door sensors, seat pressure sensors, and brake pedal switches to independently control the powertrain electronic control unit (ECU) and infotainment system based on user authentication, door status, and driver presence.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the powertrain ECU and infotainment system are independently powered with keyless control, then ease of operation and user convenience are improved, but device complexity and control system complexity increase
Solution Approach 1:
The power control system is segmented into two independent control paths: one for the powertrain ECU and another for the infotainment system. Each system can be powered on or off independently based on different conditions. The powertrain ECU is controlled based on brake pedal detection, while the infotainment system is controlled based on door sensor detection, allowing separate optimization of each subsystem without requiring full system activation.
Solution Approach 2:
The system dynamically adjusts the power state of different components based on real-time sensor inputs. The powertrain ECU and infotainment system can transition between on and off states independently based on driver actions (brake pedal pressing, door opening/closing). This dynamic control allows the system to adapt to different usage scenarios and optimize energy consumption in real-time.
2Ease of operation
If the infotainment system remains on independently from the powertrain ECU, then ease of operation is improved, but energy consumption and battery drain increase
Solution Approach 1:
The system applies partial action by selectively powering on only the infotainment system without activating the full powertrain ECU. When the driver opens the door, the infotainment system can be accessed independently for tasks like adjusting climate controls or navigating, while the powertrain remains off. This partial activation provides useful functionality while consuming significantly less energy than full system activation.
Solution Approach 2:
Different power management strategies are applied to different system components based on their specific requirements. The infotainment system is designed to support independent low-power operation for user convenience, while the powertrain ECU requires stricter control based on actual driving conditions. This localized quality approach allows each subsystem to operate in its optimal power state.
3Reliability
If wireless authentication and multiple sensors are integrated for power control, then reliability and security are improved, but device complexity increases
Solution Approach 1:
The power control module serves multiple functions: it processes wireless authentication signals, reads sensor inputs (door sensors, brake pedal switches, seat pressure sensors), determines powertrain state, and controls both the powertrain ECU and infotainment system power states. This multi-functional approach consolidates what could be separate complex systems into a single coordinated controller, improving reliability while managing complexity through functional integration.
Solution Approach 2:
The system implements feedback loops where sensor inputs (door status, brake pedal position, seat occupancy) continuously inform the power control module's decisions. The module monitors the state of each component and adjusts power delivery accordingly, creating a closed-loop control system that enhances reliability by responding to actual system conditions rather than operating on fixed schedules or manual inputs.
Data Source
AI summary
A method for keyless dual power system control for an electric motor vehicle is provided. The electric motor vehicle including a powertrain electronic control unit (ECU) and an infotainment system that are independently powered. The method includes receiving a user authentication from a wireless device to authenticate a user, receiving a driver's door status from a door sensor, receiving a driver presence signal from a seat pressure sensor, and determining whether the driver's door status from the door sensor indicates the driver's door is in an open status. The method also includes controlling the infotainment system to be in an on status and controlling the powertrain ECU to be in an off status upon receiving the user authentication, determining the driver's door is in the open status, and receiving the driver presence signal.