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WIRELESS DATA COLLECTION Methods 1 and 2 involve time-consuming hand movements
Da t a ColleCtion SyStemS In a controlled, 100% inspection test to measure the impact of DataSure on throughput and to pickup and put down the tool in order to record data.
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A dAtAsure tHrouGHput And AccurAcy study
quality assurance, we made three measurements per part and recorded the data on 500 parts.
Measurement with DataSure is fast and direct. The slowest
method (#1) required 29 second per part with many errors.
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With DataSure the same task was nearly 5 times faster –
with no errors.
MetHod 1:
MeAsure, HAndWrIte results, reMote dAtA entry
• 37 time/motion elements, 28.9 sec./part
• 62 entry errors
Factors affecting accuracy and throughput:
• Measurement must stop to handwrite results.
• Illegible handwritten numbers, mistakes noted but not corrected,
data written in shorthand and inspector's handwriting misread
by the transcriber
• Value can change when the inspector releases the micrometer
• Data entry errors at the PC
MetHod 2:
MeAsure And enter results to pc
• 20 time/motion elements: 15.3 sec./part
• 4 data entry errors
Factors affecting accuracy and throughput:
• Alternating measuring and data entry caused errors
• Caliper not seated correctly when released to key-in data
• Missed data entry, incorrect keystrokes, entry to wrong cell
MetHod 3:
MeAsure And enter results dIrectly WItH dAtAsure
• 17 time/motion elements: 6.6 sec./part
• 0 entry errors
Factors affecting accuracy and throughput:
• Measurement technique is maintained
• No interpretation or memory errors
• Immediate, direct data entry eliminates errors
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