Warehouse Picker Audio Device with Inertial Step Counting
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Solution Overview
Problem
Traditional paper-based order picking methods in warehouses are inefficient and prone to errors, leading to incorrect shipments and customer dissatisfaction, while voice-directed picking can suffer from issues like memorization of check digits, which reduces accuracy.
Innovation Solution
A workflow system utilizing audio-based picker devices with inertial units to monitor movement and ensure correct location verification before providing check digit information, preventing incorrect item retrieval by requiring physical movement to the correct location.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If voice-directed picking is used to free hands and eyes, then ease of operation is improved, but reliability deteriorates due to memorization of check digits
Solution Approach 1:
The system incorporates feedback by requiring pickers to provide verbal confirmation of their location and the items they are picking. The host computer receives this feedback and verifies it against the expected picking sequence and location data, creating a closed-loop verification system that prevents memorization errors.
Solution Approach 2:
The system performs preliminary verification by checking the picker's reported location and item selection against the predetermined picking list before allowing the picking operation to proceed. This preliminary action prevents incorrect picks from occurring in the first place.
2Reliability
If paper-based picking methods are used, then reliability is maintained through physical documentation, but productivity decreases due to cumbersome procedures
Solution Approach 1:
The system replaces the mechanical paper-based documentation system with an electronic voice-directed system. Pickers communicate verbally with the host computer, eliminating the need to physically handle papers, clipboards, and barcode readers, thereby increasing productivity while maintaining reliability through electronic verification.
Solution Approach 2:
The voice-directed picking system with verification capabilities serves multiple functions: it provides picking instructions, receives location confirmation, verifies item selection, and tracks picking progress all through verbal communication, replacing multiple separate tools and procedures.
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
Enhances picking accuracy and efficiency by ensuring pickers physically move to the correct location before confirming items, reducing errors and improving customer satisfaction.
Implementation Method 1
Each audio-based picker device includes an inertial unit configured to calculate a step count related to walking movements of the respective user
Data Source
AI summary
Systems and methods for monitoring worker movement within a warehouse setting are provided. According to one implementation, a wearable apparatus comprises an audio unit configured to receive audio input signals from a user and convey audio output signals to the user. Also, the wearable apparatus includes a step count unit configured to detect walking movements of the user.