RFID Pig Tracking for Data-Rich Vehicle Body Coating Lines
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Solution Overview
Problem
Conventional coating systems for vehicle bodies are expensive to set up and have limited information density, as they rely on magnet-based pig detection methods that only provide location and indirect speed information, lacking the ability to encode additional data.
Innovation Solution
Integration of an RFID transponder into the pig for storing and transmitting data, allowing for higher information density and enabling the storage and reading of various pig-specific, coating-specific, and object-specific data without a centralized data processing system, facilitating cost-effective data transfer and management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If magnet-based detection is used to track the pig, then the pig location can be detected at sensor points, but the information density is limited and only location and indirect speed can be determined
Solution Approach 1:
The patent replaces the magnet-based detection system with an RFID (Radio Frequency Identification) system. Instead of using magnets and magnetic field sensors, the invention employs RFID transponders that communicate via electromagnetic radio waves, enabling higher information density including location, speed, orientation, and additional encoded data without increasing mechanical complexity
Solution Approach 2:
The invention changes the detection parameter from magnetic field interaction to radio frequency electromagnetic wave interaction. This parameter change enables the pig to carry and transmit multiple types of information (location, speed, orientation, identification, service life data) simultaneously through the RFID transponder, significantly increasing information density
2Reliability
If sensors are arranged one behind the other to track the pig, then the pig can be tracked along the way, but setting up sensors is expensive and must be planned with the design of the pipe system
Solution Approach 1:
The patent replaces the expensive physical sensor array infrastructure with RFID read/write devices that can be strategically positioned at pig stations. The RFID system uses electromagnetic fields that penetrate the pipeline wall, eliminating the need for complex sensor installations and reducing setup costs while maintaining reliable tracking
Solution Approach 2:
The invention introduces the RFID transponder as an intermediary carrier on the pig that holds and transmits all tracking information. This intermediary approach allows data to be read at any point along the pipeline without requiring a continuous array of sensors, reducing infrastructure costs while maintaining tracking reliability
3Loss of information
If a magnet is integrated into the pig for detection, then the pig presence can be detected with magnetic field-sensitive sensors, but further information cannot be encoded using this technology
Solution Approach 1:
The patent replaces the simple magnetic identification system with an RFID transponder that incorporates electronic memory. This substitution enables the pig to store and transmit multiple types of information including location, speed, orientation, identification numbers, service life data, and coating process information, vastly expanding data encoding capability
Solution Approach 2:
The invention implements preliminary action by pre-storing relevant data on the RFID transponder before the pig enters service or at its first pig station. This allows the pig to carry its own information portfolio throughout its service life, eliminating the need for continuous external data input and enabling comprehensive tracking from the outset
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 continuous, reliable data flow from coating materials to application devices, allowing for improved tracking and control of pigs and coating processes, reducing setup costs and enhancing data accuracy by physically linking data to the pig, enabling efficient monitoring and maintenance.
Implementation Method 1
an RFID transponder (36) which is designed to store and/or send and/or data using RFID technology to recieve
Data Source
Figure 1
Figure 2
AI summary
The invention relates to a pig for a coating device, in particular for coating vehicle bodies, wherein the coating device has a line system that can be pigged, wherein the pig has an RFID transponder, which is designed to store and/or to transmit and/or to receive data by means of the RFID technology. The invention further relates to a coating system for coating an object with a coating material and to a method for controlling a coating system.