Smart Door Lock Presence Sensing for Low-Power Unlock Control
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Solution Overview
Problem
Smart door locks consume high power due to the need for a constant power-on state to enable remote control and unlocking, leading to increased energy consumption and reduced device lifespan.
Innovation Solution
A door lock system that includes a sensing module to determine the presence of a human body within a preset detection range, powering on only the main controlling and unlocking modules when a user is present, and powering off when no user is detected, thereby reducing power consumption and extending device lifespan.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the controlling module is kept in a power-on state to ensure timely control, then the responsiveness and control capability are improved, but the power consumption increases significantly
Solution Approach 1:
The sensing module performs preliminary detection of human presence before activating the controlling module. This preliminary action allows the system to prepare for potential control operations while maintaining low power consumption during idle periods, as the sensing module consumes less power than the full controlling module.
Solution Approach 2:
The power state of the controlling module is made dynamic rather than static. The module switches between power-on and power-off states based on real-time sensing input, adapting its operational status to actual usage needs. This dynamic power management resolves the contradiction by providing responsiveness only when necessary.
2Reliability
If the door lock operates in a constant power-on state, then the control functionality is maintained, but the device lifespan is reduced due to continuous energy consumption
Solution Approach 1:
Instead of continuous operation, the controlling module operates periodically based on sensing triggers. The module powers on when human presence is detected and powers off after a predetermined time period when no presence is detected, creating a periodic operation pattern that extends device lifespan while maintaining control functionality when needed.
Solution Approach 2:
The system uses its own sensing capability to automatically manage its power state without external intervention. The sensing module detects human presence and automatically triggers the controlling module to power on or off, allowing the system to self-regulate its operational status and extend its own lifespan through intelligent power management.
Data Source
AI summary
The present disclosure discloses a door lock, a door lock controlling method and a door lock controlling device. The door lock includes a main controlling module, an unlocking module and a sensing module. The sensing module is configured to determine whether a human body is present within a first preset detection range; if yes, the main controlling module and the unlocking module are controlled to be powered on; and if no, the main controlling module and the unlocking module are controlled to be powered off. In the present disclosure, only the sensing module is in an operating state and other modules are not powered on when there is no user who is trying to open the door. Therefore, the power consumption of the door lock is reduced.