Mail Processing System True Length Dimensional Rating
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Solution Overview
Problem
Conventional mail processing systems fail to provide true length support for carrier rates, leading to improper classification and overpayment of fees due to inconsistent orientation-dependent length assignment, resulting in unnecessary waste of funds.
Innovation Solution
The system determines a first dimension parallel to the path of travel and a second dimension transverse to the path, compares them to assign the longer side as the length, and uses this assignment to correctly classify mail pieces based on format tables, ensuring accurate fee calculation and printing of the appropriate indicium.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the top edge of the mail piece is always specified as the length for dimensional rating, then the mail processing system can consistently assign length parallel to the path of travel, but this leads to improper classification and overpayment when carrier rates are based on true length (longest side)
Solution Approach 1:
The system dynamically adjusts the length assignment based on mail piece orientation. When a mail piece is fed in landscape orientation, the top edge is assigned as length; when fed in portrait orientation, the side edge is assigned as length. This dynamic adaptation ensures true length support while maintaining operational simplicity.
Solution Approach 2:
The system changes the parameter assignment (which dimension is considered length) based on the detected orientation of the mail piece. Sensors detect whether the mail piece is in landscape or portrait orientation, and the system accordingly assigns either the top edge or side edge as the length dimension for rating purposes.
2Measurement precision
If the system supports true length requirements for all carriers, then accurate fee calculation is achieved, but the system complexity increases due to orientation detection and conditional processing
Solution Approach 1:
The mail piece itself provides the information needed for correct processing through its physical orientation. The system simply detects the orientation (landscape or portrait) and automatically adjusts length assignment accordingly, without requiring external intervention or complex decision-making logic.
Solution Approach 2:
Sensors provide feedback about the mail piece orientation, and this feedback is used to automatically adjust the length assignment. The system continuously monitors the orientation and makes real-time adjustments to ensure accurate dimensional rating based on true length.
Data Source
AI summary
A mail processing system that includes dimensional rating capability that provides true length support for carrier rates to prevent improper classification of mail pieces. The mail processing system determines a first dimension, parallel to the path of travel, and a second dimension, transverse to the path of travel, of a mail piece. The first dimension and second dimension are compared to each other to determine which is greater. The greater of the two dimensions is assigned to be the length of the mail piece, regardless of the orientation of the mail piece. The format of the mail piece is then determined based on a comparison of the assigned length and assigned width dimensions to maximum dimensions specified by a format table. Based on the determined format of the mail piece, a delivery fee is then calculated, and an indicium can be generated for the mail piece.