Bluetooth Master Module Power Saving by Proximity Switching
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Solution Overview
Problem
Existing Bluetooth devices require manual pairing and consume excessive current during data transmission and wireless connection, limiting design freedom and battery life.
Innovation Solution
A Bluetooth device with a master module that switches between active and power saving modes based on proximity to a mobile device, adjusting packet exchange cycles and connections to minimize current consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple Bluetooth modules operate concurrently to expand design freedom, then device functionality and design flexibility improve, but current consumption increases
Solution Approach 1:
The Bluetooth module dynamically switches between active mode and power saving mode based on whether a mobile device is detected within range. This dynamic operation allows the system to maintain design flexibility while adapting power consumption to actual usage conditions, resolving the contradiction between versatility and energy use.
Solution Approach 2:
The system changes operational parameters by adjusting the packet exchange cycle interval and switching connection states based on device proximity. When a mobile device is detected, the module operates in active mode with normal packet intervals; when no device is present, it transitions to power saving mode with extended intervals or disconnected state, thereby reducing current consumption while preserving design capabilities.
2Speed
If packet exchange cycle is shortened to maintain real-time communication, then communication responsiveness improves, but current consumption increases
Solution Approach 1:
The packet exchange cycle interval is dynamically adjusted based on communication needs and device proximity. The system maintains short intervals during active communication for responsiveness, but extends intervals significantly during power saving mode when no mobile device is detected, thereby resolving the contradiction between communication speed and energy consumption.
Solution Approach 2:
The Bluetooth module employs periodic packet exchange with variable intervals. During active mode, packets are exchanged at normal intervals to maintain real-time communication. During power saving mode, the interval is extended to reduce transmission frequency, balancing communication responsiveness with energy efficiency based on actual usage conditions.
3Reliability
If wireless connection is maintained continuously to ensure connectivity, then connection reliability improves, but current consumption increases
Solution Approach 1:
The connection state is dynamically managed based on device proximity detection. The module maintains active connections when mobile devices are within range to ensure reliability, but releases connections and enters power saving mode when devices are absent, thereby maintaining connection reliability during needed periods while reducing power consumption during idle periods.
Solution Approach 2:
The system changes connection parameters by releasing Bluetooth connections during power saving mode when no mobile device is detected within the preset range. This parameter change allows the system to maintain connection reliability when needed while eliminating unnecessary current consumption from maintaining idle connections, resolving the contradiction between reliability and energy use.
Data Source
AI summary
According to an embodiment, provided is a Bluetooth device comprising a master module and at least one slave module, wherein: the master module operates in an active mode when a mobile communication device is located within a pre-set range and switches to a power saving mode when the mobile communication device deviates from the pre-set range; in the active mode, the master module performs data communication by being connected to the mobile communication device located within the pre-set range and operates the Bluetooth device by periodically exchanging a packet with the slave module; and in the power saving mode, the master module operates in at least one of a first mode in which a packet exchange cycle with the slave module is adjusted from a first interval to a second interval, and a second mode in which a connection between the master module and the slave module is released.