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بنام خدا کاربرد کامپیوتر در مهندسی صنایع (21774 ( Lecture 7 AIDC

بنام خدا کاربرد کامپیوتر در مهندسی صنایع (21774 ( Lecture 7 AIDC. Bar Codes & Automatic Data Capture. DEFINITION:

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بنام خدا کاربرد کامپیوتر در مهندسی صنایع (21774 ( Lecture 7 AIDC

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  1. بنام خدا کاربرد کامپیوتر در مهندسی صنایع (21774( Lecture 7 AIDC

  2. Bar Codes &Automatic Data Capture

  3. DEFINITION: A computerized technology that allows real-time data to be collected accurately and rapidly to create the potential for improving performance, productivity, and profitability Automatic Data Capture Automatic Data Collection Automatic Identification QUESTION: Why should an IE know AIDC? AUTOMATIC IDENTIFICATION & DATA CAPTURE

  4. Demand for AIDC has “Exploded” Most training in AIDC occurs after graduation THE NEED

  5. Optical Bar Codes Two Dimensional BC OCR (Optical Character Recognition) Machine Vision Wireless RFDC RFID (tags) Contact Pen-Based Systems (VCR,DVD) Contact Buttons Touch Screens Biometrics Voice Recognition Fingerprint Geometry Hand Geometry Retinal Eye Scan AIDC Technology Families

  6. AIDC Technology Families • Cards • Magnetic Stripe (Credit cards, 28 words, 256 bytes) • Smart/Chip Cards (65000 bytes) • Magnetic Ink Character Recognition (MICR) • Optical (Laser) Cards (1.6 MB)

  7. WHEN SHOULD AIDC BE APPLIED? QUESTION

  8. Why AIDC? $ • Lower Labor Costs • Reduced Errors • Reduced process errors • Reduced Shipping Errors • Accurate Inventory Levels • Shorter Cycle Times

  9. AIDC BENEFITS MANUAL: AUTOMATIC:

  10. SUBSTITUTION ERROR RATE (SER) Probability that a given character contains an error e.g., 1 error in million FIRST READ RATE (FRR) Probability that an attempt to capture data will result in data being captured on the first attempt Expressed as a % EVALUATING AIDC TECHNOLOGIES

  11. What is the number of errors to be expected in an application given number of characters entered is 53 million (53,000,000) and the SER is .00001%? If 1000 labels are to be scanned using a system with a 75% FRR, how many scanning attempts will be required? EXERCISES

  12. AIDC Technologies • Bar Codes • Wireless Data Capture • Automatic Speech Recognition

  13. Bar Codes • Most Widespread AIDC Technology • Material or People Tracking • Database Key

  14. Typical Applications • Shop Floor Lot Tracking • WIP Tracking • MRP/ERP • Inventory Management • Shipping/Receiving • Quality Control • Labor Tracking • Cost Accounting • Records/Claims Tracking • Library Applications • Hospital Applications

  15. Advantages Low cost printing Wide variety printing techniques Customized symbol Low SER (<1 error in 1 million) Disadvantages Not good in hazardous environments 1-D symbols hold little data Data cannot be changed BAR CODES

  16. Wireless Data Capture--RFDC-- • Portable Interactive Bar Code Readers • Data sent back to host computer via Radio Signal

  17. RFDC Applications • Warehouse • Picking & Placing Items • Manufacturing • Shipping & Receiving items • Parts Tracking • Retail • Tracking items on Shelves

  18. Portability Ease of Creation Expense Prohibitions New Capabilities RFDC Advantages

  19. Wireless Data Capture--RFID-- • Retrieve data via radio signal from a transponder (tag) attached to item • Used when • Distance impedes optical techniques • Obtrusiveness is an issue • Harsh Environment

  20. Typical Applications • Tracking Shipping Containers on high speed sortation systems • Access Control • Parts/Pallet Tracking • Patient Tracking • Shoplifting Prevention • Libraries • Department Stores • Jewelry Stores

  21. Advantages Label does not need to be visible Works well in hazardous environments Disadvantages Expensive Labeling Requires a Site Survey RFID

  22. Automatic Speech Recognition • Digitizes vocal track • Recognizes through Pattern Matching • Used for Hands-free, Eyes-Free Tasks • Speech Independent vs. Speech Dependent Systems

  23. Typical Applications • Automatic Generation of Work Measurement Standards • Recording defects while performing visual inspections • Overcoming Learning Disabilities • Overcoming Physical Disabilities • Making Airline Reservations • Baggage/Shipment Loading

  24. Advantages: “Hands-off” operation Portable systems require no wires Disadvantages: Slow (20 seconds) High error rates Training required Automatic Speech Recognition

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