Portable Data Tag Reader Location Accuracy
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing data tag reader systems face challenges in accurately identifying the location of a data tag relative to a known point when the reader device does not have a fixed position.
Innovation Solution
The system determines the location and orientation of the data tag reader device using GPS, gyroscopes, accelerometers, compasses, cameras, and ultrasonic or RFID technologies, and adjusts the read zone characteristics to accurately locate data tags, which can be refined through power ramping and Return Signal Strength Indicator (RSSI) methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the reader device is made portable and mobile, then the ease of operation and versatility are improved, but the ability to accurately identify the location of data tags relative to a known point deteriorates
Solution Approach 1:
The patent introduces GPS receivers, gyroscopes, accelerometers, and compasses as intermediary devices that measure the location and orientation of the portable reader device. These intermediary measurement devices enable the system to calculate the location of data tags even though the reader itself is mobile, thus resolving the contradiction between portability and location identification accuracy.
2Measurement precision
If multiple sensor devices are added to determine location and orientation, then the measurement precision is improved, but the device complexity increases
Solution Approach 1:
The patent combines multiple sensor devices (GPS receiver, gyroscope, accelerometer, compass) into an integrated measurement system within the portable reader device. By merging these components and processing their data together, the system achieves accurate location and orientation determination while managing the complexity through integrated design rather than separate independent systems.
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 precise identification of data tag locations, even when the reader device is not fixed, by determining the spatial location and orientation of the reader device and adjusting the read zone, allowing for effective tracking of various objects, including large and small items.
Implementation Method 1
a GPS receiver to determine a location of the portable data tag reader device
Implementation Method 2
a gyroscope to determine an orientation of the portable data tag reader device
Implementation Method 3
an accelerometer to determine a location of the portable data tag reader device
Implementation Method 4
a compass to determine an orientation of the portable data tag reader device
Implementation Method 5
an ultrasonic transceiver to determine a location of the portable data tag reader device
Implementation Method 6
an ultrasonic transceiver to determine a location of the portable data tag reader device
Implementation Method 7
an RFID transceiver in the terminal that interrogates RFID tags while in the LOCATE mode to obtain information therefrom correlatable with their known positions
Implementation Method 8
RFID tags generally transmit to a reader device a radio frequency (RF) signal
Implementation Method 9
The reader device receives the response signal from the tag, and the response signal is demodulated, decoded and further processed
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A portable data tag method, device and system for identifying a location of a data tag. The method comprises reading (505) the data tag by a portable data tag reader device; determining (510), by a processor in operative communication with the reader device, a location of the portable data tag reader device; determining (515), by the processor, a read zone of the portable data tag reader device, relative to the location of the portable data tag reader device; and determining (520), by the processor, the location of the data tag using the location of the portable data tag reader device and the read zone of the portable data tag reader device.