Wireless Master Device Capture Signal Power Management
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Solution Overview
Problem
Existing wireless communication systems for entrance monitors, particularly those used in single-occupant households, face challenges in reducing power consumption for both slave and master devices, with existing technologies either focusing on slave device power reduction or neglecting reception operations, leading to inefficiencies in overall energy savings.
Innovation Solution
A wireless communication system that includes a master device with a power supply, interrupt detector, and controller, which continuously transmits a capture signal to the slave device at predetermined intervals, allowing both devices to conserve power by minimizing unnecessary operations and optimizing reception and transmission timing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the slave device performs regular reception at predetermined intervals, then power consumption is reduced compared to continuous reception, but communication reliability deteriorates because the master device cannot transmit data outside these intervals
Solution Approach 1:
The slave device performs reception operations periodically at predetermined intervals rather than continuously, reducing power consumption while maintaining communication capability during active slots
Solution Approach 2:
The master device continuously transmits a capture signal before the predetermined reception interval to wake up the slave device, ensuring the slave is ready to receive data when the reception slot arrives, thus maintaining communication reliability
2Reliability
If the master device continuously transmits data, then communication reliability is maintained, but power consumption increases significantly
Solution Approach 1:
The master device transmits data only during predetermined transmission slots rather than continuously, significantly reducing power consumption while maintaining reliable communication through scheduled periodic transmissions
Solution Approach 2:
A capture signal acts as an intermediary wake-up mechanism, transmitted continuously at low power to notify the slave device of upcoming data transmission, enabling the master to maintain reliability without sustained high-power transmission
3Use of energy by moving object
If the slave device stops transmission/reception during sleep period, then power consumption is reduced, but the device cannot receive unexpected data from the master
Solution Approach 1:
The slave device alternates between sleep mode and active reception slots periodically, achieving significant power reduction while maintaining the ability to receive data during scheduled active periods
Solution Approach 2:
The continuous capture signal transmission by the master device serves as a preliminary notification, ensuring the slave device wakes up in time for its reception slot to receive any data that needs to be transmitted
Data Source
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AI summary
A wireless communication system is a wireless communication system including a slave device, and a master device wirelessly connected to the slave device, and the master device includes a master device wireless communicator that performs wireless communication with the slave device, a master device power supply that supplies power to each unit of the master device, a master device interrupt detector that detects various interrupts, and a master device controller that controls the entire master device, the master device interrupt detector supplies power from the master device power supply to each unit of the master device when detecting the interrupt, and the master device controller performs control to continuously transmit a capture signal to the slave device that waits for reception at a reception timing of a predetermined interval, via the master device wireless communicator for time longer than the predetermined interval.