Work Instruction Feedback Using Product Position Progress Tracking
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Solution Overview
Problem
Existing work instruction systems inaccurately detect the start and end times of work due to reliance on worker presence and facility operation status, leading to inappropriate work instructions, especially in complex manufacturing environments where upstream and downstream processes are not physically adjacent.
Innovation Solution
A work instruction system comprising a production progress management device and a work instruction device that communicate to provide accurate production progress information, using product position and process information to estimate and update production progress, enabling generation of appropriate work instructions based on updated production plans.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If worker presence and facility operation status are used to detect work start and end times, then the system is simple to implement, but the detection accuracy deteriorates leading to false detection when product is absent
Solution Approach 1:
The patent introduces a product presence detection mechanism as an intermediary element between worker presence detection and work status determination. By detecting whether the product is present in the facility and correlating it with worker presence and facility operation status, the system achieves accurate work start and end time detection without false positives. The product presence information acts as a mediator that validates whether detected worker presence and facility operation actually correspond to genuine work activities.
2Reliability
If only worker presence and facility operation status are monitored, then the monitoring system is simple, but the production progress information becomes inaccurate in complex manufacturing environments
Solution Approach 1:
The patent merges multiple monitoring functions into a unified production progress management system. It combines worker presence detection, facility operation status monitoring, and product presence detection into an integrated system that comprehensively tracks production progress. By merging these different data sources and correlating them through the product presence information, the system achieves reliable and accurate production progress information that reflects the actual state of manufacturing processes.
3Productivity
If work instructions are generated without accurate production progress information, then the instruction generation process is fast, but the work instructions become inappropriate and reduce productivity
Solution Approach 1:
The patent implements a feedback mechanism where accurate production progress information, derived from correlated data on worker presence, facility operation status, and product presence, is continuously fed back to the work instruction generation system. This feedback enables the system to generate appropriate and timely work instructions that reflect the actual production state. By using this feedback loop, the system ensures that work instructions are both accurate and generated efficiently, thereby improving manufacturing productivity without significant time loss.
Data Source
AI summary
A work instruction system includes: a production progress management device including a communication unit configured to communicate with a work instruction device, a product signal storage unit that stores a product signal including position information of a product, a product in-progress process estimation unit configured to estimate an in-progress process of the product using the position information, and a production progress estimation and update unit configured to estimate production progress of the product in accordance with a change in the position information and update production progress information; and the work instruction device including a communication unit configured to communicate with the production progress management device, a production progress storage unit that stores the production progress information, a data collection unit configured to obtain progress management information updated from the production progress management device, a recommended work generation unit configured to generate recommended work information, and an output unit.