RFID Inventory Robot Control for Accurate Bin and Item Tracking
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Manual inventorying of items is prone to data errors, labor-intensive, and inefficient, with existing RFID-based systems facing interference and accuracy issues.
Innovation Solution
A robot control apparatus uses distinct radio frequencies to communicate with storage-bin and item electronic tags, combining positional data from multiple sources to accurately track inventory while adjusting its path as needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual inventorying is performed using PDA and RFID tags, then item inventorying can be realized, but data errors occur and labor efficiency is low
Solution Approach 1:
The patent replaces the manual mechanical inventory system (staff using PDA to read RFID tags) with an automated robot system equipped with RFID reading capabilities. The robot autonomously navigates to storage bins, reads RFID tags of both bins and items, and transmits data to the main controller, eliminating manual labor and associated data errors while significantly improving inventory efficiency
Solution Approach 2:
The robot system performs self-service inventorying by autonomously navigating to storage bins, reading RFID tags of bins and items, comparing tag data with stored information, and generating inventory results without human intervention. The system self-manages the entire inventory process from navigation to data transmission, reducing labor requirements and improving efficiency
2Extent of automation
If RFID-based inventory system is implemented, then inventory automation is achieved, but signal interference and accuracy issues occur
Solution Approach 1:
The patent segments the RFID communication process into distinct frequency channels: the main controller uses a first frequency to communicate with storage bin electronic tags, while the robot uses a second frequency to communicate with item electronic tags. This frequency segmentation prevents signal interference between different communication pairs, improving RFID signal accuracy and reliability
Solution Approach 2:
The patent introduces frequency as an intermediary parameter to separate and isolate different RFID communication streams. By assigning different frequencies to different communication pairs (controller-bin and robot-item), the system prevents direct signal interference, allowing automated inventorying to proceed with high reliability
3Productivity
If robot navigates to storage bins for inventorying, then comprehensive inventory coverage is achieved, but path accuracy and positioning errors occur
Solution Approach 1:
The patent implements feedback mechanisms where the robot reads RFID tags of storage bins to obtain positioning information and continuously reports its position to the main controller. The main controller monitors whether the robot is on the preset path and provides correction instructions, creating a closed-loop feedback system that maintains positioning accuracy while enabling comprehensive inventory coverage
Solution Approach 2:
The patent merges multiple positioning information sources including RFID tag data from storage bins, preset path information, and main controller coordination to determine the robot's current position. This combination of positioning methods compensates for individual limitations and improves overall positioning accuracy while maintaining comprehensive inventory coverage
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
Reduces manual labor, minimizes data errors, and enhances inventory efficiency by using a robot system that accurately tracks and adjusts its path to ensure comprehensive inventorying.
Implementation Method 1
transmitting a second signal with a first frequency through a first transmitting antenna in a case where a first signal with the first frequency transmitted by a main controller is received through a receiving antenna
Implementation Method 2
transmitting a fourth signal with a second frequency through a second transmitting antenna, to cause each of a plurality of item electronic tags receiving the fourth signal to transmit a fifth signal with the second frequency
Data Source
AI summary
The disclosure provides a method and a system for inventorying items, a robot control apparatus and a robot. The method including: transmitting a second signal with a first frequency through a first transmitting antenna in a case where a first signal with the first frequency is received; transmitting a fourth signal with a second frequency through a second transmitting antenna; taking one of a plurality of third signals, which has a maximum signal strength, as a target signal in a case where the plurality of the third signals are received; taking a storage-bin corresponding to a storage-bin electronic tag transmitting the target signal as a target storage-bin, extracting item electronic tag information associated with the target storage-bin; acquiring a inventorying result of the target storage-bin according to a plurality of pieces of tag information and the item electronic tag information; and transmitting the inventorying result to the main controller.