UWB Coordinate Conversion for Chip-Free Device Position Display
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Solution Overview
Problem
Existing UWB-based positioning systems face inaccuracies when a UWB chip is not present in both the UWB tag and the locator node, leading to incorrect distance and angle estimation, and incur high costs and power consumption when the chip is included in the node.
Innovation Solution
A method and electronic device that utilize a UWB chip in a first device to detect position coordinates, convert them into global and user coordinates, and transmit these coordinates to a second device without a UWB chip, enabling accurate positioning display on the second device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a UWB chip is included in a UWB node (such as a smart watch), then positioning accuracy is improved, but cost and power consumption increase
Solution Approach 1:
The patent introduces a server as an intermediary component that performs UWB positioning calculations remotely. The server receives raw position data from UWB nodes and performs the heavy computational tasks of trilateration and coordinate transformations, thereby eliminating the need for UWB chips in mobile devices while maintaining positioning accuracy.
Solution Approach 2:
The patent replaces the mechanical/electronic approach of embedding UWB chips in mobile devices with a software-based server system. Instead of using hardware components in the mobile device, the system uses server-based processing to achieve the same positioning function, thereby reducing device complexity and power consumption.
2Measurement precision
If a UWB chip is included in a UWB node (such as a smart watch), then positioning accuracy is improved, but manufacturing cost increases
Solution Approach 1:
The patent introduces a server as an intermediary component that performs UWB positioning calculations remotely. The server receives raw position data from UWB nodes and performs the heavy computational tasks of trilateration and coordinate transformations, thereby eliminating the need for UWB chips in mobile devices while maintaining positioning accuracy.
Solution Approach 2:
The patent replaces the mechanical/electronic approach of embedding UWB chips in mobile devices with a software-based server system. Instead of using hardware components in the mobile device, the system uses server-based processing to achieve the same positioning function, thereby reducing device complexity and power consumption.
3Ease of manufacture
If UWB chips are not present in both the UWB tag and the locator node, then cost is reduced, but distance and angle estimation becomes inaccurate
Solution Approach 1:
The patent introduces a server as an intermediary that receives raw position data from UWB nodes and performs sophisticated coordinate transformations and trilateration calculations. This server-based approach compensates for the lack of UWB chips in mobile devices by using computational geometry to accurately determine positions and angles.
Solution Approach 2:
The patent transforms position data through multiple coordinate system conversions (from UWB node coordinates to global coordinates, then to user coordinates) and applies mathematical models to compensate for the absence of direct UWB measurements in mobile devices, thereby maintaining measurement accuracy.
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
Enables accurate positioning of a UWB tag on a device without a UWB chip, avoiding increased costs and power consumption by leveraging coordinate conversions and sensor data to display the tag's position accurately.
Implementation Method 1
the UWB uses the transit time method (Time of Flight (ToF)) to determine the position of electronic devices
Implementation Method 2
In the case of UWB, the signal is a UWB radio wave
Data Source
AI summary
Provided is a method and device for displaying a position of a first device on a second device. The method includes: detecting, by a device using a UWB chip, position coordinates in a first coordinate system of the first device with respect to a position of the device; converting, by the device, the position coordinates of the first device in the first coordinate system into position coordinates of the first device in a global coordinate system; converting, by the device, the position coordinates of the first device in the global coordinate system into position coordinates of the first device in a user coordinate system; transmitting the converted position coordinates of the first device in the user coordinate system to the second device; and displaying the position of the first device on the second device based on the converted position coordinates of the first device in the user coordinate system.