Wireless Access Control Power via Mobile Source
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Solution Overview
Problem
Existing electronic access control systems in buildings face challenges in powering door locks, as they require either costly cabling or frequent battery replacements, with no practical solution for wireless energy supply to remote-controlled door locks.
Innovation Solution
An access control device that uses a mobile communication apparatus with a built-in or snap-on mobile power source unit to establish a wireless power transfer link, allowing authorized users to operate door locks without extracting energy from the mobile power source, using energy stored in the device for actions like unlocking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If each lock is connected to a power line, then the lock has continuous power supply, but it is complicated and costly to provide cabling to all locks
Solution Approach 1:
The patent replaces the mechanical/electrical cabling system with a wireless electromagnetic field-based power transmission system. The access control device uses a wireless power transmission interface to receive energy wirelessly from a mobile power source unit through electromagnetic coupling, eliminating the need for physical power lines and reducing installation complexity while maintaining power supply reliability.
2Use of energy by moving object
If the lock contains a battery, then it provides necessary energy, but the battery must be replaced or recharged frequently
Solution Approach 1:
The patent implements a dynamic energy supply system where the access control device can switch between using its internal energy storage and receiving wireless power transmission dynamically. The device continuously monitors energy levels and automatically establishes wireless power reception when needed, eliminating the need for periodic battery replacement while maintaining energy self-sufficiency.
Solution Approach 2:
The patent employs preliminary action by having the access control device continuously monitor its energy storage status and proactively establish wireless power reception before the battery is depleted. The control unit detects low energy levels and initiates wireless power transfer in advance, preventing operational interruption and eliminating maintenance downtime.
3Ease of operation
If wireless power transmission is used, then no cabling is needed, but there is no practical solution for supplying energy to access control devices
Solution Approach 1:
The patent achieves universality by designing a multi-functional mobile power source unit that combines wireless communication capabilities with wireless power transmission. The same mobile device that can communicate with the access control device for authentication also serves as the power source, eliminating the need for separate charging infrastructure and ensuring reliable power delivery through a proven communication channel.
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 solution eliminates the need for external power sources and battery replacements, providing a reliable, efficient, and cost-effective method for powering access control devices, simplifying installation and maintenance in large complexes.
Implementation Method 1
a wireless power transmission interface (116) configured to establish a wireless power transfer link with the mobile power source unit (150)
Data Source
Figure 1~3
Figure 4
AI summary
A user of a mobile communication apparatus (160) seeks permission to operate an access control device (110) by placing an active mobile power source unit (150), which is controlled by the mobile communication apparatus (160), within an operation range of a wireless power transmission interface (116) in the access control device (110). In response thereto, a wireless power transfer link is established between the mobile power source unit (150) and the access control device (110). Thereafter, a wireless communication link (WL2) is established between the mobile communication apparatus (160) and the access control device (110). Data are then exchanged between the access control device (110) and the mobile communication apparatus (160) over the wireless communication link (WL2). The exchanged data pertain to at least one access-related service imple-mentable via the access control device (110); and provided that the user is authorized, the requested services are effected.