Vehicle Cabin Climate Control Based on Occupant Fatigue Estimation
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Solution Overview
Problem
Existing vehicle air conditioning systems fail to accurately determine an occupant's fatigue degree based on actions performed before entering the vehicle, leading to inadequate air conditioning adjustments.
Innovation Solution
A vehicle system that communicates with a mobile terminal to acquire information on the occupant's actions outside the vehicle, estimates fatigue state and degree based on identified places and actions, and controls air conditioning settings accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If air conditioning control is based only on sensor data inside the vehicle, then the system is simple, but the fatigue degree determination is inaccurate
Solution Approach 1:
The system performs preliminary actions by acquiring action information from the mobile terminal before the occupant enters the vehicle. This includes obtaining location data, movement data, and other action-related information that indicates the occupant's fatigue state before air conditioning control begins, allowing for more accurate fatigue assessment
Solution Approach 2:
The mobile terminal acts as an intermediary between the occupant and the air conditioning system. It collects action information from the occupant's device and transmits it to the air conditioning control system, enabling accurate fatigue detection without requiring complex sensors inside the vehicle
2Reliability
If action information from mobile terminal is acquired, then fatigue state estimation is improved, but communication requirements increase
Solution Approach 1:
The system utilizes the mobile terminal's existing multi-functional capabilities (GPS, accelerometer, gyroscope, compass) to collect action information. These components serve multiple purposes including location tracking, movement detection, and fatigue assessment, reducing the need for dedicated communication infrastructure
Solution Approach 2:
The mobile terminal performs self-service by automatically collecting and transmitting action information without requiring additional vehicle-mounted equipment. The terminal uses its own sensors and processing capabilities to generate fatigue-related data, eliminating the need for complex vehicle-side communication systems
Data Source
AI summary
A vehicle includes an information receiver, an estimator, and a processor. The information receiver is configured to communicate with a mobile terminal of an occupant of the vehicle, and acquire information related to an action performed by the occupant outside a vehicle compartment of the vehicle. The estimator is configured to estimate a fatigue state including a fatigue degree of the occupant, based on a place identified from the acquired information related to the action. The processor is configured to execute, based on a result of estimating the fatigue state, air conditioning control including setting of a temperature and setting of an air volume on an air conditioning device configured to air condition the vehicle compartment.