Passive RFID Transponder for Radio Position Detection
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Solution Overview
Problem
Conventional radio location systems for determining the relative position of stations are complex and expensive, making them unsuitable for widespread use in applications like electric vehicle charging, where precise positioning is required.
Innovation Solution
A method using a first station with at least one antenna and a second station with two base-modulated antennas to send and receive modulated locating signals, allowing phase relationships to calculate position angles, with the second station being designed as a passive RFID transponder to reduce complexity and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional radio location systems are used to determine relative position of stations, then position detection accuracy is improved, but device complexity and cost increase
Solution Approach 1:
The patent uses a passive RFID transponder that copies and reflects the locating signal from the first station without requiring active transmission components. The second station with base-modulated antennas reflects the signal back to the first station, allowing position calculation through phase relationship analysis. This copying approach eliminates the need for complex active transmission and reception hardware at the second station while maintaining measurement precision.
Solution Approach 2:
The patent introduces a passive RFID transponder as an intermediary element between the two stations. The transponder receives the locating signal from the first station and reflects it back with modulation, enabling position detection without requiring the second station to have active transmission capabilities. This intermediary approach simplifies the overall system architecture while preserving measurement accuracy.
2Reliability
If active transmission and reception antennas are used in both stations, then communication reliability is improved, but manufacturing cost increases
Solution Approach 1:
The patent replaces expensive active transmission and reception antennas at the second station with inexpensive passive RFID transponders. These passive devices have no moving parts, require no power supply, and can be manufactured at very low cost. While they lack active transmission capabilities, they maintain sufficient communication reliability for position detection applications through signal reflection and modulation.
Solution Approach 2:
The passive RFID transponder at the second station serves itself by reflecting and modulating the incoming locating signal without requiring external power or active components. The transponder automatically responds to the locating signal from the first station, eliminating the need for complex hardware and reducing manufacturing costs while maintaining functional reliability.
3Stability of the object's composition
If hardware and algorithms are distributed in both stations, then system robustness is improved, but ease of operation deteriorates due to increased complexity
Solution Approach 1:
The patent segments the system functions into two distinct roles: the first station performs active locating signal transmission and position calculation, while the second station performs passive signal reflection. This segmentation allows the complex hardware and algorithms to be concentrated in the first station, simplifying the second station to a basic passive reflector and improving overall ease of operation while maintaining system robustness.
Solution Approach 2:
The first station is designed as a universal device that can serve multiple functions: transmitting locating signals, receiving reflected signals, and calculating position information. By concentrating all active functions in one station, the system achieves multi-functionality without requiring each station to have identical complex hardware, thereby improving ease of operation while maintaining robustness through the versatile first station.
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 enables accurate and cost-effective determination of relative positions between stations, suitable for applications like electric vehicle charging, by concentrating hardware and algorithms in the first station and using inexpensive passive antennas in the second station, allowing for precise positioning without the need for active transmission and reception.
Implementation Method 1
The second station reflects the locating signal as a first modulated reflected locating signal via a first base-modulated antenna and as a second modulated reflected locating signal via a second base-modulated antenna
Implementation Method 2
base-modulated antennas is an antenna that has a modulator at its base for modulating a received signal
Implementation Method 3
The phase relationships of the received modulated reflected locating signals are used to ascertain at least one position angle for the relative position between the first station and the second station
Data Source
AI summary
A system and method for determining the relative position of stations through radio location is proposed. In one aspect, a station is configured as an apparatus having at least one antenna. At least one first station has at least one first antenna, and at least one second station has at least two base-modulated antennas. The first station sends at least one locating signal via the first antenna. The second station reflects the locating signal as a first modulated reflected locating signal via a first base-modulated antenna and as a second modulated reflected locating signal via a second base-modulated antenna. The first station receives the modulated reflected locating signals via the antenna. The phase relationships of the received modulated reflected locating signals are used to ascertain at least one position angle for the relative position between the first station and the second station.