Vehicle ventilation control using portable device detection
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Solution Overview
Problem
Existing vehicle ventilation control systems are inadequate in maintaining comfort and efficiency, particularly in optimizing in-vehicle temperature after the user has exited the vehicle, leading to issues like food deterioration and excessive battery consumption due to reliance on GPS information.
Innovation Solution
A vehicle ventilation control system that includes a reception unit for user-input instruction signals via wireless communication, allowing for ventilation control after the user has exited the vehicle, utilizing modes such as automated, forced, and reservation ventilation to maintain a comfortable temperature, and incorporating sensors for temperature, rain, and battery level to optimize ventilation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If GPS information is continuously received to control pre-air conditioning operation mode, then in-vehicle temperature optimization is achieved, but battery power consumption increases
Solution Approach 1:
The system performs preliminary ventilation action by opening windows and operating air blowers before the user boards the vehicle, based on detection of the portable device approaching. This preliminary action optimizes the in-vehicle temperature in advance, eliminating the need for continuous GPS monitoring and subsequent temperature adjustments, thereby reducing battery power consumption.
Solution Approach 2:
The invention extracts the essential function of temperature optimization from the continuous GPS-based pre-air conditioning system and implements it through a simpler detection-based trigger mechanism. By removing the continuous GPS reception requirement and retaining only the core ventilation function triggered by portable device detection, the system achieves temperature optimization with significantly reduced energy consumption.
2Reliability
If air blower and window are opened after portable device enters detection area, then security is improved by visual observation, but ventilation efficiency is insufficient
Solution Approach 1:
The system opens windows and operates air blowers in advance when the portable device enters the detection area, performing ventilation action before the user actually boards the vehicle. This preliminary action ensures both security (through early window opening for visual observation) and ventilation efficiency (by allowing sufficient time for air circulation and temperature adjustment).
Solution Approach 2:
The ventilation system maintains continuous operation of air blowers and open windows from the moment the portable device enters the detection area until the user boards the vehicle. This continuous useful action ensures adequate ventilation efficiency throughout the waiting period, rather than delaying ventilation until the last moment.
3Ease of operation
If vehicle ventilates only before user boards, then comfort is improved, but food deterioration cannot be prevented when user leaves for extended period
Solution Approach 1:
The ventilation system is designed to serve multiple functions: it provides pre-boarding ventilation for user comfort and can also perform extended ventilation to prevent food deterioration when the user leaves the vehicle for longer periods. The system responds to different user needs universally through the same portable device detection mechanism, adapting its operation duration and intensity based on the situation.
Solution Approach 2:
The ventilation system dynamically adjusts its operation based on real-time conditions. When the portable device is detected approaching, the system activates ventilation for pre-boarding comfort. When the portable device remains outside the detection area for extended periods, the system continues ventilation to prevent food deterioration, making the system adaptable to both short-term and long-term absence scenarios.
Data Source
AI summary
A vehicle ventilation control system includes: a reception unit that receives an instruction signal input by a user via wireless communication; and a control unit that controls ventilation inside a vehicle based on the instruction signal, in which the control unit performs ventilation control to control the ventilation based on the instruction signal input during a period after the user gets out of the vehicle to next boarding.