Project # Team Members: Maham Suleman, EE Anne Johnson, ME Joe Farnsworth, EE Josh Brown, ME Jerry Money, EE Sanh Ha, ME Jeffrey Miller, EE Faculty Advisors: Faulty Coordinator: Dr. Sahin, EE Prof. George Slack Dr. Kochersberger, ME

Project Sponsor TRANSCAT  Located in Rochester, NY – Industry leader in calibration services Instrumentation  Transcat Contact – Howard Zion – Philip Mistretta – Rainer Stellrecht – Robert Maddamma

Current Workbench Setup

Project Background Problem Description  High volume unit  Undergoes preliminary testing process –Semi-automated through CalTrak® –Technician still required

Project Mission Mission Statement Investigate viable methodologies and approaches to automate the“as received data” calibration process for the Fluke 80 Series multimeters. Project Description  Build a working prototype to –Automate the reading process –Toggle the push buttons –Switch between test leads –Rotate the VOM rotary switch

Final Assembly  Driving Components –Camera placement –Solenoid actuator stroke length  12” x 12”x ½” 6061 Aluminum base plate  ¼” Plexiglas case –Encloses components –Multimeter placement and constraint

Rotate the VOM rotary switch  Hurst Series ABS Geared Stepping Motor  Rated Torque oz-in  Step angle 0.1   Custom made rotary dial fixture

 Polypropylene plastic construction –Easily machine-able –Non-conductive  3 banana plugs –mA, COM, and VΩ Banana Plug Assembly  Independent Amp Terminal –Mini polypropylene block –Utilizes a sliding rail bearing –Provides insertion / extraction

Finished Banana Plug Assembly Banana Plug Assembly

Solenoid Fixture  3 solenoids used to depress multimeter buttons, allowing for automation of calibration and mode selection.  70155K12 push style continuous duty linear solenoids from McMaster- Carr selected for application.

Design of Bracket  Design had to account for ideal striking distance of solenoids themselves, button arrangement, size constraints.  Mounting had to accommodate clear LOS for camera, while remaining adaptable to location of stepper motor assembly.

System Control  PIC18F8720 Microcontroller -Dual UARTS -52 I/O’s (14 used)  Control Programming -CalTrak Command Strings -“conf,XXXX -“flt,ave,#times,%tol” -“read,value”

Camera  Captures the image  On-Board processing Image Analysis  Breaks image into pixel arrays  Calculates average color Display Analysis

Driver Circuits  Stepper Motor Driver Circuit -UCN5804 Chip -4 I/O’s used per chip -1.25Amp continuous output  Linear Actuator / Relay Driver -N-Channel MOSFET -1 I/O used per driver

Finished Assembly Questions?