•EXPERIENCE: Circuit Design Engineer

  • TITLE: Circuit Design Engineer
  • COMPANY: Eikone Inc
  • COMANY WEBSITE: www.eikone.com
  • DURATION: Aug 2003 - Dec 2005
  • PROJECT: Eikone Inc was designing a Skin Analysis Kiosk (SAK) which would be used for diagnosing facial ailments such as acne, sun burn, dry skin etc.
  • DESCRIPTION: The SAK consisted of 6 UV lights which would turn on when a user inserts cash or completes an authenticated credit card transaction. The user observes the face in a mirror under the UV lights. Based on the color of the skin in a particular part of the face the user enters this information into a GUI via a touch screen. On completion of process (or time out), the system generates a printed report with the ailments the user is affected with and some recommended cosmetics.
  • JOB FUNCTIONS: The SAK required all the UV lights to be ON during the diagnosis process to have the face evenly lit up. It was therefore important to monitor these lights constantly to detect any failure in one or more of the lamps. A circuit was designed to monitor the lamps constantly. The circuit was designed to send a signal to the computer via LPT port whenever a malfunction occurs in the UV lights. The computer would use this signal to shut down the system and send an SMS/e-mail to the owner of the system about the malfunction. Another aspect of the circuit design was to design a circuit to turn the lamps ON and OFF using a computer signal. Also, the diagnosis signal to the computer was supposed to be available only after the UV lights are fully ON (to avoid flickering of UV lights on power on to be taken as malfunctioning). In order to do this some timing and logic control was implemented within the circuit. Once the circuit design was completed, an analysis was done in Multisim environment and using ORCAD p-spice. The process included capturing the schematic using ORCAD Capture tool, simulation using ORCAD P-spice and board layout using ORCAD Layout. Files such as BOM, Cross reference etc were generated . Next, the circuit prototype was constructed in order to verify its functionality. With successful testing, the circuit was finally approved for PCB layout design. Gerber Files were generated to send the PCB design for fabrication. The first PCB fabrication was given to pad2pad.com. On the arrival of PCB board, another prototype to test the PCB board was constructed. With some revisions in the PCB, a final prototype was constructed. The entire system was then ordered for fabrication.
  • DOWNLOADS: Circuit Data Sheet (Un-official)