UWB Distance Measuring Mode Switching
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Solution Overview
Problem
Bluetooth Low Energy (BLE) distance measuring technologies have low accuracy, while Ultra Wide Band (UWB) technologies consume more power, making them less suitable for prolonged device operation in distance measuring scenarios, especially for closer distances.
Innovation Solution
A method that utilizes UWB antenna modules to switch between different distance measuring modes based on initial distance ranges, with lower power consumption in the second mode and higher accuracy, using UWB antenna modules for both modes, and no overlap between distance ranges to optimize power usage and accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If UWB technology is used for distance measuring, then measurement precision is improved, but use of energy increases
Solution Approach 1:
The patent implements dynamic switching between first and second distance measuring modes based on real-time distance range conditions. The system transitions from a low-power mode to a high-precision UWB mode only when the initial distance measurement indicates the target is within a specific first distance range, thereby dynamically adapting power consumption to measurement requirements
Solution Approach 2:
The patent changes the measurement parameter by selecting different distance measuring modes based on the initial distance range. When the initial distance is within the first distance range, the system switches to the second distance measuring mode which uses UWB technology for higher precision, otherwise it remains in the first mode with lower power consumption
2Use of energy by moving object
If BLE technology is used for distance measuring, then use of energy is reduced, but measurement precision deteriorates
Solution Approach 1:
The patent segments the distance measurement process into two distinct modes: a first distance measuring mode using BLE technology for initial coarse measurement, and a second distance measuring mode using UWB technology for precise measurement. This segmentation allows the system to use the appropriate technology for each measurement stage
Solution Approach 2:
The patent performs a preliminary distance measurement using the low-power first distance measuring mode before deciding whether to activate the high-precision second distance measuring mode. This preliminary action allows the system to avoid unnecessary high-power consumption by only activating UWB when the initial measurement indicates it is needed
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enhances the accuracy of distance measurement while reducing power consumption by adaptively switching between distance measuring modes based on the initial distance range, ensuring efficient operation across varying distances.
Implementation Method 1
obtaining the actual distance between the first device and the second device according to a first distance measuring mode in response to the initial distance value being in a first distance range
Data Source
AI summary
A distance measuring method is applied to measure a distance between a first device and a second device. The first device and the second device include a UWB antenna module. The distance measuring method includes: obtaining the distance between the first device and the second device as an initial distance value; obtaining an actual distance between the first device and the second device according to a first distance measuring mode in response to the initial distance value being in a first distance range; and obtaining the actual distance between the first device and the second device according to a second distance measuring mode in response to the initial distance value being in a second distance range. The second distance measuring mode and the first distance measuring mode are configured to obtain the actual distance between the first device and the second device based on the UWB antenna module.