Manual Vehicle Air Conditioner Remote Preconditioning Control
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Solution Overview
Problem
Manual-type vehicle air conditioners face issues with energy inefficiency and discomfort during remote air conditioning, as they lack temperature sensors and rely on pre-set blowout temperatures and air quantities, leading to potential insufficiency or excessive energy consumption.
Innovation Solution
A control system that adjusts blowout temperature and air quantity from maximum to intermediate settings over time upon user boarding, using sensors for outside temperature and solar radiation to optimize comfort while reducing energy use, and returns to user-set settings upon detection of boarding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the set blowout temperature and set air quantity at the time of disembarkment are used for remote air conditioning, then energy consumption is reduced, but the user may feel air cooling insufficiency or air heating insufficiency when boarding the vehicle
Solution Approach 1:
The control device starts the air conditioning device with maximum cooling or heating capacity before the user boards the vehicle, ensuring the cabin temperature is adjusted in advance. This preliminary action at maximum capacity prevents discomfort upon boarding, while the system automatically transitions to energy-efficient operation after a predetermined time elapses or when the user boards, thus resolving the contradiction between immediate comfort and energy consumption.
2Reliability
If the blowout temperature and air quantity are forcibly changed to maximum settings during remote air conditioning, then air conditioning comfort is improved, but energy is wastefully consumed
Solution Approach 1:
The control device dynamically adjusts the operating mode of the air conditioning device based on timing and user presence. It starts with maximum capacity for quick temperature adjustment, then automatically transitions to an energy-saving mode after a predetermined time elapses or when user boarding is detected. This dynamic adjustment resolves the contradiction by applying maximum power only when necessary for comfort, then reducing power consumption.
3Use of energy by moving object
If the blowout temperature and air quantity are maintained at intermediate settings during remote air conditioning, then energy consumption is reduced, but a comfortable in-vehicle cabin temperature cannot be realized when the user boards the vehicle
Solution Approach 1:
The control device performs preliminary cooling or heating at maximum capacity before the user boards the vehicle, ensuring the cabin reaches a comfortable temperature in advance. This preliminary action at full power prevents the need for continued high-energy operation, as the system can transition to energy-saving mode after the temperature adjustment is complete or when the user boards, thus achieving both temperature comfort and energy efficiency.
Data Source
AI summary
A control system includes a manual-type air conditioner, and a control device which causes the manual-type air conditioner to execute remote air conditioning in response to a command from outside of a vehicle. The control device starts actuation of the manual-type air conditioner with a maximum temperature as a target blowout temperature of an air-conditioning air and a maximum air quantity as a target air quantity in response to a trigger command of the remote air conditioning, and gradually changes and reduces the target air quantity while gradually changing the target blowout temperature toward a target intermediate temperature with elapse of time. The control device changes the target blowout temperature and the target air quantity respectively to a set blowout temperature and a set air quantity at a time of previous disembarkment, when boarding of a user to the vehicle is detected.