Capacitive Coupling Vehicle Door Lock Switching Circuit
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Solution Overview
Problem
Current vehicle technologies for switching processes, such as door opening and locking, are costly and unreliable, often requiring complex and expensive radio transmission systems that can be misused or trigger unintended actions.
Innovation Solution
A method and system for generating switching signals based on user interaction using capacitive coupling, where enablement signals are transmitted through the user to a detection zone, allowing for secure and ergonomic operation of switching devices, and a vehicle door lock system that uses a mobile key device for selective locking and unlocking without requiring special manipulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If radio transmission systems are used for vehicle switching processes, then switching functions can be implemented, but the system becomes costly and unreliable
Solution Approach 1:
The patent replaces complex radio transmission systems with a capacitive coupling-based electrical field interaction system. The switching signal is transmitted through the user's body via capacitive coupling between a first electrode (in the switching device) and a second electrode (in the detection zone), eliminating the need for expensive and unreliable radio frequency communication hardware while improving security and reliability.
Solution Approach 2:
The user's body acts as an intermediary medium for signal transmission. The capacitive coupling system uses the user's body capacitance to transfer the switching signal from the switching device to the detection zone, creating a secure physical link that prevents unauthorized remote activation while maintaining system simplicity.
2Ease of operation
If conventional switching devices are installed in vehicles, then switching functions are available, but cabling expenses are high
Solution Approach 1:
The patent extracts the signal transmission function from traditional wired connections and implements it through capacitive coupling fields. By using electrical field interaction through the user's body rather than physical cables, the system eliminates extensive cabling requirements while maintaining full switching functionality, significantly reducing manufacturing costs.
3Ease of operation
If switching devices are placed at various locations, then ergonomic operation is improved, but system complexity increases
Solution Approach 1:
The patent creates a universal capacitive coupling system where any switching device can communicate with the detection zone through the user's body regardless of physical location. This multi-functional approach allows switching devices to be placed ergonomically throughout the vehicle without requiring separate wiring harnesses for each location, as the capacitive field can penetrate through the user's body to establish communication.
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
This approach reduces cabling costs, enhances security by ensuring only authorized users can operate vehicle functions, and prevents unintended unlocking or locking, while maintaining user convenience and safety.
Implementation Method 1
The enablement signal is preferably coupled into the user on the basis of the electrical field interaction effect
Implementation Method 2
A method and system for generating switching signals based on user interaction using capacitive coupling
Data Source
AI summary
The invention relates to a circuit for selectively producing switching signals, in particular signals used for locking vehicle doors, a vehicle provided with said circuit, a system and method for protecting areas of risk and a system, components and method for hermetically transferring validated data. For automotive engineering, it is desired that certain switching processes in or outside the vehicle like the opening of a door, the actuation of a start button or the activation of a parking brake be carried out exclusively by a driver. The aim of said invention is to develop the solutions which make it possible to advantageously produce distinctive signals for coordinating a switching process. For this purpose, the inventive method for generating switching signals consists in producing said signals according to the selective activation of a switching device by a user. The inventive circuit is characterized in that the device signal is emitted towards the user and is transmitted by the user during the actuation of the switching device. The switching signal is produced by said device.