Portable Log Marking Tool with Time-Validated Position Tracking
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Solution Overview
Problem
Existing methods for logging require a harvesting machine equipped with a marking device, which is not always available, necessitating a solution for marking logs from trees felled without such machinery.
Innovation Solution
A portable, hand-held log marking tool generates a unique code and establishes its geographical position using a position determining device, applies the code as a marking on the log, and stores it as an authenticated code in a database if the time elapsed is within a predetermined threshold, ensuring the log's origin and movement can be traced.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a harvesting machine with a marking device is used, then the log marking and position recording is automated and reliable, but the device complexity and cost increase significantly
Solution Approach 1:
The marking function is extracted from the harvesting machine and implemented as a separate portable hand-held tool. This allows the marking capability to be used independently without requiring the complex harvesting machine infrastructure, thereby reducing device complexity while maintaining marking reliability through the same code generation and position recording methodology.
Solution Approach 2:
A portable marking tool serves as an intermediary device between the harvester and the log. It receives code information and position data, applies the marking, and records the information in a database, thus bridging the gap between harvesting operations and log identification without requiring direct integration into the harvesting machine.
2Device complexity
If a portable hand-held marking tool is used, then the device complexity is reduced and it can be used without a harvesting machine, but the time to mark each log individually increases
Solution Approach 1:
The code is generated and the position information is recorded in advance before the actual marking is applied to the log. This preliminary preparation of marking data allows the marking process itself to be executed quickly when the tool is applied to the log, reducing the overall time loss while maintaining accurate position and code association.
3Productivity
If code marking is applied without time verification, then the marking process is faster, but the position information correctness cannot be verified
Solution Approach 1:
A time verification mechanism provides feedback to confirm that the marking was applied within an acceptable time window after code generation and position recording. This feedback loop ensures position information accuracy by validating the temporal sequence of operations, while the automated time checking occurs quickly enough to maintain high productivity without significant manual intervention.
Data Source
AI summary
A method for handling logs, wherein the method comprises the following steps: —retrieving or generating a unique code at a first moment; —establishing, by means of a position determining device, position information as to the geographical position of a portable, hand-held log marking tool (1) at said first moment; —applying the code as a corresponding code marking on a log by means of the log marking tool at a second moment and automatically establishing a time value representing the time elapsed between said first moment and said second moment; —comparing said time value with a predetermined time threshold value; and—storing the code as an authenticated code in a database associated to the position information when said time value is smaller than the time threshold value. The invention also relates to a log marking tool (1) for use in such a method.