Adaptive Vehicle HVAC Control for Driver Exit Thermal Comfort
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Solution Overview
Problem
Delivery drivers face challenges in maintaining efficient thermal conditions in vehicles due to frequent door openings and exposure to varying thermal environments, making it difficult to maintain cabin comfort.
Innovation Solution
An HVAC system with processing circuitry that adjusts parameters based on occupancy, ambient temperature, and occupant location, including directing thermal energy to vehicle seats and components to maintain comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the HVAC system operates continuously to maintain thermal comfort, then cabin comfort is improved, but energy consumption increases
Solution Approach 1:
The HVAC system dynamically adjusts its operation based on real-time detection of occupant presence and environmental conditions. The system transitions between different operational states (full operation, reduced operation, shutdown) depending on whether the cabin is occupied or unoccupied, allowing thermal comfort to be maintained when needed while reducing energy consumption when the cabin is empty.
Solution Approach 2:
The system uses sensors to continuously monitor cabin occupancy status and environmental conditions, feeding this information back to the control circuitry. This feedback mechanism enables the HVAC system to automatically adjust its parameters based on actual cabin conditions, ensuring comfort is maintained when occupants are present while avoiding unnecessary energy consumption when the cabin is unoccupied.
2Ease of operation
If the HVAC system is adjusted frequently to respond to occupancy changes, then thermal comfort is maintained, but system complexity increases
Solution Approach 1:
The HVAC system automatically detects occupancy changes and adjusts its own parameters without requiring manual intervention. The control circuitry monitors sensor inputs and autonomously modifies HVAC operation, enabling the system to self-regulate thermal comfort based on cabin conditions while avoiding the complexity of manual control interfaces.
Solution Approach 2:
The control circuitry integrates multiple functions including occupancy detection, environmental monitoring, and HVAC parameter adjustment into a single system. This multi-functional approach consolidates what could be separate complex systems into one integrated control unit, maintaining thermal comfort while managing system complexity through functional integration.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system efficiently maintains thermal comfort by adjusting HVAC settings based on occupancy and environmental conditions, ensuring optimal conditions upon the driver's return.
Implementation Method 1
directing thermal energy to a vehicle seat of the vehicle occupant
Data Source
AI summary
Systems and methods are provided for determining, by processing circuitry, a vehicle occupant has left a cabin of a vehicle (or that the cabin is unoccupied), where the vehicle comprises a heating, ventilation, and air conditioning (HVAC) system. In response to determining the vehicle occupant has left the cabin (or the cabin is unoccupied), the processing circuitry may adjust a parameter of the HVAC system.