Master Device Interrupt Detection for Wireless Power Management
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Solution Overview
Problem
Existing wireless communication systems for entrance monitors, particularly in low-cost installations, fail to effectively reduce power consumption on both the slave and master devices, with previous technologies either neglecting master device power reduction or only addressing transmission power consumption without considering reception operations.
Innovation Solution
A wireless communication system where the master device includes a power supply that detects interrupts to selectively power units only when necessary, allowing for continuous signal transmission and reception at predetermined intervals, and the slave device performs intermittent reception, thereby reducing overall power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the master device continuously transmits capture signals to establish synchronization, then communication reliability is improved, but power consumption on the master side increases
Solution Approach 1:
The master device transmits capture signals periodically at predetermined intervals rather than continuously, allowing the communication units to enter low-power states between transmissions. This periodic transmission pattern maintains synchronization reliability while significantly reducing power consumption compared to continuous transmission.
2Use of energy by moving object
If the slave device performs intermittent reception, then power consumption on the slave side is reduced, but communication efficiency deteriorates
Solution Approach 1:
The slave device uses interrupt detection to immediately wake from low-power state when transmission requests are detected, ensuring timely response without requiring continuous reception. This feedback mechanism maintains communication efficiency while enabling significant power savings through intermittent reception operations.
3Reliability
If power is supplied to all units continuously, then device performance is maintained, but overall power consumption increases
Solution Approach 1:
The power supply system dynamically adjusts power delivery based on operational state, supplying power to communication units only during active transmission or reception periods and cutting power during idle intervals. This dynamic power management maintains device performance when needed while minimizing overall power consumption during low-activity periods.
Data Source
AI summary
In a wireless communication system, a master device includes a wireless communicator that performs wireless communication with the slave device, a power supply that supplies power to each unit of the master device, an interrupt detector that detects various interrupts, and a controller that controls the entire master device, the interrupt detector supplies power from the power supply to each unit when detecting the interrupt, and the controller performs control to continuously transmit a capture signal to the slave device that waits for reception at a reception timing of a first predetermined interval, via the wireless communicator for time longer than the first predetermined interval when the detected interrupt is an interrupt that requests signal transmission to the slave device, and control to await a capture signal transmitted from the slave device through the wireless communicator when the detected interrupt is a timer interrupt occurring at a second predetermined interval.