Vehicle Door Activation Device with Backup Power
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Solution Overview
Problem
Conventional vehicle door handles and keyholes are becoming obsolete with the adoption of passive entry systems, which require a more streamlined and efficient method for unlocking and locking vehicle doors without mechanical keys.
Innovation Solution
A vehicle door activation device equipped with a semiconductor chip, back-up battery, and antennas that responds to a remote device's proximity and actuation of a button to unlock or lock the door, utilizing a passive entry system and incorporating an emergency power mode when the vehicle battery voltage falls below a threshold.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If passive entry systems are implemented to eliminate mechanical keys, then ease of operation is improved, but reliability deteriorates when power supply fails
Solution Approach 1:
A back-up battery is pre-installed in the door assembly to provide power when the vehicle battery fails, enabling the door to remain operable for unlocking and locking functions even when the main power supply is depleted
Solution Approach 2:
A semiconductor chip acts as an intermediary between the back-up battery and the door lock mechanism, managing power distribution and enabling communication with remote devices to facilitate door operation during power outages
2Device complexity
If conventional vehicle door handles and keyholes are eliminated, then device complexity is reduced, but ease of operation deteriorates when power is unavailable
Solution Approach 1:
The door assembly includes an integrated activation button that allows users to manually trigger door locking and unlocking functions without requiring external power or complex electronic systems, enabling the system to serve itself during power failures
Solution Approach 2:
The door assembly integrates multiple functions including passive entry via remote devices, manual activation via button, and back-up power supply, allowing the same system to operate through multiple methods depending on power availability
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
Simplifies access control by eliminating the need for mechanical keys and conventional handles, ensuring seamless operation even during power outages by using a back-up battery to maintain functionality, enhancing user convenience and security.
Implementation Method 1
a back-up battery stored in the first chamber; and a semiconductor chip stored in the second chamber, the semiconductor chip configured to: responsive to a voltage supplied to the vehicle door being less than a threshold: cause the back-up battery to supply power to the vehicle door
Implementation Method 2
responsive to a tag being within a proximity from the antennas and an actuation of the switch, cause the vehicle door to unlock
Data Source
AI summary
A vehicle door activation device includes a housing, an activation button connected with the housing to define a first chamber and a second chamber, a back-up battery stored in the first chamber, and a semiconductor chip stored in the second chamber. The semiconductor chip, in response to a voltage supplied to a vehicle door being less than a threshold, causes the back-up battery to supply power to the vehicle door, and, in response to a tag being within a proximity from the semiconductor chip and an actuation of the activation button, causes the vehicle door to unlock.