Electric Lock Dual-Controller Architecture for Low-Power Motor Control
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Solution Overview
Problem
The development of electric locks is complicated due to the integration of user interface programs, verification mechanisms, and motor control parameters into a single controller, making it difficult to develop and manage.
Innovation Solution
The electric lock comprises a main controller and an independent motor controller, allowing separate development of user interface and verification mechanisms, with the motor controller storing control parameters and operating independently to drive the motor based on received signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the controller integrates user interface program, verification mechanism and motor control parameters into a single unit, then the control function is unified, but the development difficulty increases
Solution Approach 1:
The controller is divided into two independent parts: a main controller that handles user interface and verification, and a motor controller that handles motor control parameters. This segmentation allows each module to be developed separately, reducing overall development difficulty while maintaining functional unity through communication between the two controllers.
2Device complexity
If the controller integrates all functions into a single unit, then the structure is simplified, but the power consumption increases
Solution Approach 1:
By separating the motor controller from the main controller, the motor controller can enter a low-power state when motor control is not needed, while the main controller continues to handle user interface functions. This reduces overall power consumption compared to a fully integrated controller that must remain fully active.
Solution Approach 2:
The motor controller operates periodically - active when motor control is needed and in low-power mode otherwise. This periodic activation pattern reduces average power consumption while maintaining the simplified structure benefit of having a dedicated motor control unit.
Data Source
AI summary
An electric lock includes an input unit, a main controller electrically connected to the input unit, a driving module, a motor connected to the driving module, and a motor controller independent of the main controller and storing control parameters of the motor. The main controller includes a processing unit configured to control the input unit to receive a user input. When the main controller receives the user input and determines that the motor controller is in a sleep mode, the main controller transmits a wake-up signal to the motor controller for waking up the motor controller. When the motor controller is woken up, the main controller transmits a control signal to the motor controller, and the motor controller controls the motor to drive the driving module to drive a predetermined mechanism of the electric lock to move according to the control signal and the control parameters of the motor.