Home Automation Synchronization Channel Preamble
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Solution Overview
Problem
Home automation systems face challenges in energy-efficient data transmission, particularly in battery-operated devices, where high power consumption limits device longevity and requires continuous listening for data, leading to increased latency and energy waste.
Innovation Solution
The method involves storing two fixed synchronization channels in both the transmitter and receiver, allowing the receiver to listen on these channels during a scan interval and the transmitter to send a preamble twice as long as the scan interval to ensure data transmission without knowing the current data channels, enabling efficient event-controlled data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the receiver remains permanently switched on to detect data transmissions, then data transmission reliability is improved, but power consumption increases
Solution Approach 1:
The receiver is switched on only periodically at fixed time intervals (e.g., every 15 minutes) to check for data transmissions, rather than remaining permanently on. This periodic activation maintains the ability to detect data while significantly reducing overall power consumption during operation.
2Use of energy by moving object
If the receiver uses polling to check for data at fixed intervals, then power consumption is reduced, but data transmission latency increases
Solution Approach 1:
The transmitter sends a wake-up call message to the receiver before the actual data transmission. This preliminary action alerts the receiver to activate its receiver before the data arrives, ensuring timely data reception without requiring the receiver to remain permanently on, thus balancing power consumption with reduced latency.
3Use of energy by moving object
If the receiver activates at fixed intervals to check for data, then power consumption is reduced, but spontaneous data transmission capability deteriorates
Solution Approach 1:
The transmitter sends a wake-up call message before the actual data transmission. This preliminary action enables spontaneous data transmission by alerting the receiver to activate before the data arrives, rather than requiring the receiver to continuously monitor or wait for fixed interval polling.
Solution Approach 2:
A wake-up call message acts as an intermediary signal between the transmitter and receiver. This intermediate message triggers the receiver's activation, enabling efficient communication without requiring the receiver to remain permanently on or wait for fixed interval polling, thus maintaining spontaneous data transmission capability while reducing power consumption.
Data Source
Figure 1~2
Figure 3
Figure 4~5
AI summary
The method involves storing fixed synchronization channels (40a-40d) in a transmitter i.e. sensor (2), and a receiver i.e. actuator. The receiver is listened to the fixed synchronization channels within scan intervals (42a-42d). A preamble (46) following user data is transmitter-side, event-controlled transmitted to one of the synchronization channels. The preamble has double length of the scan intervals. Two channels used for inclusion of devices in a home automation system are determined at the synchronization channels. An independent claim is also included for a home automation system.