Pressure-Sensing Bin Reordering for Accurate Inventory Tracking

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Solution Overview

Problem

Existing inventory systems are inaccurate and costly due to the manual labor required for monitoring and restocking, and existing automated systems rely on expensive sensors that do not account for inventory loss from breakage, spoilage, theft, or misidentification.

Innovation Solution

A smart bin system comprising a storage bin with a removably positioned reorder device containing a pressure sensor and control unit that automatically tracks inventory levels and reorders items based on pressure data, using a force sensing resistor (FSR) sensor and a control unit connected to a cloud server for analysis.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If manual monitoring and replenishment of inventory is conducted, then labor flexibility is maintained, but labor costs and time consumption increase

Engineering Contradiction:
Improveinventory monitoring efficiencyVSAvoidtime for manual restocking
Core Design Contradiction:
ProductivityVSLoss of time

Solution Approach 1:

The inventory system performs self-monitoring through pressure sensors that automatically detect inventory levels without human intervention. The system self-reports status to the control system, eliminating the need for manual counting and monitoring, thus improving productivity while reducing time loss.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

Manual mechanical monitoring is replaced with electronic pressure sensing technology. The pressure sensor converts physical inventory presence into electrical signals that are automatically processed, substituting human labor with an automated sensing and control system.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Productivity

If automated transactional accounting systems are used, then manual labor is reduced, but measurement accuracy deteriorates due to unaccounted inventory loss

Engineering Contradiction:
Improveautomation levelVSAvoidinventory tracking accuracy
Core Design Contradiction:
ProductivityVSMeasurement precision

Solution Approach 1:

The pressure sensor provides continuous feedback on actual inventory presence in the container. This feedback loop allows the control system to compare expected inventory levels with actual levels, detecting discrepancies caused by breakage, spoilage, or theft, thereby maintaining measurement precision while automated.

Inventive Principle:
Principle #23Feedback

Solution Approach 2:

Traditional transactional accounting methods are replaced with direct physical sensing through pressure sensors. This substitution provides more accurate real-time measurement of actual inventory presence versus book inventory, improving measurement precision in the automated system.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Measurement precision

If expensive sensors are embedded in containment units or attached to inventory, then automated monitoring accuracy improves, but system cost increases

Engineering Contradiction:
Improveinventory detection accuracyVSAvoidsystem cost
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The monitoring function is extracted from expensive embedded sensors and implemented using a simpler, more cost-effective pressure sensor system. The pressure sensor is a lower-cost component that achieves the same monitoring objective without requiring complex embedding or attachment to each inventory item.

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The system uses inexpensive pressure sensors instead of expensive embedded sensors. The pressure sensor is a simple, low-cost component that can be easily replaced if needed, reducing the overall system cost while maintaining adequate measurement precision for inventory monitoring.

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

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

The system provides a cost-effective and efficient method for inventory tracking and automatic reordering, capable of learning usage patterns and reducing manual labor, while being easily interchangeable between bins.

Implementation Method 1

The at least one reorder device including a pressure sensor and a control unit operably coupled to the pressure sensor

Methodology Applied
Scientific EffectPressure sensing: Piezoresistive Effect

Data Source

PatentUS12559315B2Smart bin system
Publication Date: 2026.02.24 TRELLEBORG SEALING SOLUTIONS US INC
  • US12559315B2 patent drawing
  • US12559315B2 patent drawing
  • US12559315B2 patent drawing

AI summary

A reordering system for automatically reordering one or more objects. The reordering system includes at least one storage bin configured for storing the one or more objects and at least one reorder device positioned within the at least one storage bin. The at least one reorder device including a pressure sensor and a control unit operably coupled to the pressure sensor.