Door Lock Mobile Device Input Interface Power Management
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Solution Overview
Problem
Conventional electric door locks face issues with continuous battery power consumption in standby mode, frequent battery replacements, and safety risks due to manual input devices like keypads or touch screens that can leave traces, making them inconvenient and insecure.
Innovation Solution
A door lock system that uses a mobile device as an input interface and power source, where the mobile device executes authentication and power supply procedures only when connected to the outer operating device, and includes a latch mechanism that remains locked unless authenticated identification information matches stored data, eliminating the need for continuous power consumption and reducing safety risks by avoiding manual input devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a transmitter is mounted to continuously or intermittently transmit signals for searching RFID cards, then unlocking function is improved, but power consumption increases continuously
Solution Approach 1:
The transmitter in the door lock is configured to transmit signals periodically or intermittently rather than continuously. This periodic transmission reduces power consumption while still enabling the door lock to search for and authenticate RFID cards effectively, resolving the contradiction between maintaining unlocking functionality and reducing continuous power drain on batteries.
2Ease of operation
If manual input devices like keypads or touch screens are used, then identification input is improved, but security deteriorates due to trace left for burglars
Solution Approach 1:
The patent replaces manual mechanical input devices (keypads, touch screens) with contactless RFID card authentication. This substitution eliminates the need for physical contact with input surfaces, thereby preventing the formation of traces that could be exploited by burglars, while still providing effective identification and authentication capabilities.
3Ease of manufacture
If batteries are used as power source instead of indoor electricity, then installation flexibility is improved, but operational reliability deteriorates due to frequent battery replacement
Solution Approach 1:
The patent combines the power source function with the mobile device (RFID card) itself. The mobile device not only serves as the identification carrier but also as the power source, providing electrical energy through its battery module. This merging eliminates the need for separate battery compartments in the door lock, reducing maintenance requirements while maintaining installation flexibility.
4Reliability
If the transmitter continuously consumes battery power in standby state, then signal readiness is improved, but battery life deteriorates
Solution Approach 1:
The transmitter operates in periodic transmission mode rather than continuous transmission, reducing power consumption during standby states while maintaining signal readiness. The mobile device's battery module supplements power only when needed during authentication, extending overall system battery life while ensuring the transmitter is ready to authenticate cards when required.
Data Source
AI summary
A door lock uses a mobile device as an input interface. The door lock includes a latch device mounted to a door, an outer operating device mounted to an outer face of the door, and an inner operating device mounted to an inner face of the door. The outer operating device includes a contact-type connection interface for contact-type connection with the mobile device. After the mobile device is in electrical connection with the outer operating device, an input device of the mobile device is used to input a to-be-identified identification information to the door lock, and the door lock identifies whether the to-be-identified identification information matches authenticated identification information for subsequent unlocking operation or remaining in a locked state.