Inventory Management System Effective Expiry Calculation
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Solution Overview
Problem
Conventional inventory management systems rely solely on expiration dates, leading to inaccurate estimation of effective expiration days and untimely replenishment, as they do not consider days of supply and serving days, resulting in customer complaints and inefficiencies in inventory management.
Innovation Solution
A computerized inventory management system that calculates effective expiry by subtracting serving days from the manufacturing expiration date, integrating this calculation into the order fulfillment, inventory receiving, and pricing processes to optimize inventory levels and prevent expired or nearly expired products from being shipped.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional systems track inventory based solely on expiration dates, then the inventory tracking process is simple, but the estimation of effective expiration days is inaccurate and replenishment is untimely
Solution Approach 1:
The system transforms the single parameter approach (expiration date only) into a multi-parameter calculation model by introducing serving days and days of supply as additional parameters. The effective expiration is calculated as: effective expiration = expiration date - serving days. This parameter transformation enables accurate estimation of when inventory will actually expire relative to consumption patterns, resolving the inaccuracy problem while maintaining system manageability through standardized calculation rules.
2Reliability
If the system considers serving days and days of supply to calculate effective expiry, then the inventory management accuracy is improved, but the system complexity increases
Solution Approach 1:
The system performs preliminary calculations of effective expiration dates at the time of inventory receipt and before shipping decisions are made. By pre-calculating effective expiration using the formula (expiration date - serving days) and comparing it with days of supply, the system proactively identifies inventory that should not be shipped or should be prioritized for consumption. This preliminary action prevents expired or partially expired products from being shipped, thereby improving reliability without requiring complex real-time monitoring during shipping operations.
3Ease of operation
If conventional systems ship items based only on manufacturing expiration date, then shipping decisions are simple, but customer satisfaction deteriorates due to receiving items with passed serving expiration
Solution Approach 1:
The system implements a feedback mechanism where the calculated effective expiration date serves as a control parameter for shipping decisions. Before authorizing a shipment, the system checks whether the effective expiration date is positive (i.e., expiration date > serving days). If the effective expiration is negative or zero, the system provides feedback to block the shipment or alert operators. This feedback loop ensures that only inventory with sufficient remaining serving days is shipped, preventing customer complaints while maintaining operational simplicity through automated decision rules.
Data Source
AI summary
Disclosed are systems and methods for inventory management based on effective days to expiry accounting for serving days of an expiring item and inventory days of supply. The disclosed system provides dynamic and automated inventory management which provides a desirable solution for a wide range of inventory applications, such as optimizing order fulfillment, inventory/receiving management, pricing/promotions determination, and store inventory management.