Check Weight Permanent Identification via Laser Marking
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Solution Overview
Problem
Current check weights lack a reliable method for permanent and individual identification, leading to potential mix-ups during handling and calibration, and existing electronic coding systems are prone to errors and costly to produce, with limited traceability beyond a certain number of weight checks.
Innovation Solution
Implementing a machine-readable identification code on the outside of the check weight, such as a data matrix code or miniaturized barcode, that includes a unique weight number and additional data like production lot and calibration dates, allowing for permanent and centralized data storage and retrieval.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If check weights are made with electronic coding systems, then identification capability is improved, but error susceptibility increases and manufacturing cost increases
Solution Approach 1:
The patent applies the copying principle by creating a permanent physical replica of identification data through laser marking directly on the check weight surface. Instead of using electronic storage that can fail, the system etches the identification code (weight number, calibration data, serial number) directly into the weight's material, creating a durable physical copy that cannot be lost or corrupted like electronic data.
Solution Approach 2:
The patent replaces electronic coding systems with a mechanical/physical marking system. Laser marking physically alters the surface material to create permanent identification, substituting the electronic field-based identification with a tangible mechanical mark that is resistant to errors and does not require power or complex reading equipment.
2Loss of information
If electronic coding systems are used for check weights, then identification capability is improved, but manufacturing cost increases
Solution Approach 1:
The patent replaces complex electronic coding systems with simple laser marking technology. This mechanical/thermal process directly etches identification data onto the weight surface without requiring electronic components, circuit boards, or programming, significantly reducing manufacturing complexity and cost while maintaining permanent identification capability.
Solution Approach 2:
The laser marking process creates a permanent physical copy of the identification data directly on the weight surface. This eliminates the need for separate electronic storage devices, databases, or communication systems, simplifying the manufacturing process and reducing overall system cost while ensuring the identification information remains with the weight throughout its service life.
3Ease of operation
If check weights are handled manually during calibration, then operational flexibility is maintained, but mixing errors increase
Solution Approach 1:
The patent implements feedback by providing immediate visual verification of weight identity through permanently marked identification codes. During calibration operations, operators can quickly scan or read the laser-marked codes on weights to confirm they are handling the correct weight, receiving instant feedback that prevents mixing errors while maintaining manual handling flexibility.
Solution Approach 2:
The laser marking process creates permanent visual differences on the weight surface through material alteration (darkening, etching, or color change). This visual encoding allows operators to quickly distinguish between different weights and verify identity, reducing mixing errors while preserving manual operational flexibility through clear visual feedback.
Data Source
AI summary
A check weight (1) that is used to check a gravimetric measuring instrument, specifically a balance, or to check a further weight, is provided with a means of identification. This marking which is applied on the outside surface of the check weight includes a permanently affixed machine-readable identification code (2) which makes the specific weight piece individually recognizable. This opens the possibility for a method whereby an individually identifiable check weight can be traced back in time. A system for tracing check weights back in time includes one or more reader devices (6) that serve to record the marking, one or more processors (10) wherein the machine-readable identification code can be converted back into an identification code that can be electronically processed, and one or more data storage units, in particular a database (8) serving to store at least the data contained in the identification code.