Slide 1 - School of Engineering Science

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					Aron McKinnon
Raymond Tan
Peter Chen

 14th Dec 2007
•   Why SWIS?
•   The problem
•   Our competitors
•   Our solution and targeted market
•   Product overview
•   Our design
•   Live demonstration
•   Production timeline
•   Budget
•   Funding
•   Conclusion
•   Acknowledgements
             Why SWIS?
• Short-range :
  Suitable for enclosed environments and built
  up areas.
• Wireless:
  Reduce clutter and obstruction due to wiring.
• Innovative:
  Simple implementations that achieve practical
• Solutions:
  Products that solve common daily problems.
           The Company
• Aron McKinnon, the Chief Executive Officer
  (CEO) of SWIS
• Raymond Tan, the Chief Technology Officer
  (CTO) of SWIS
• Peter Chen, Chief Quality Assurance Officer of
            The Problem:
• Customers sometimes wait for extended
  periods of time to be served.
• Due to failure of being alerted, service
  providers otherwise kept busy, are left idling
• Decreased productivity due to time wastage
  resulting from lack of communication.
• Decrease in productivity may ultimately lead
  to lower income and poor customer appraisal.
         Possible Settings
• Mainly hospitality environments:
  –   Restaurants
  –   Hospitals
  –   Old age homes
  –   Department Stores
• Therefore, these are our target consumer
Our Competitors’ Designs
• High-tech solutions :
  touch screen order menu.
   elegent solution
  X costly investment
• The “WaiterCaller” wireless paging system
   alerts a waiter to a table’s request
  X does not identify purpose of paging
  X does not enable waiter to update the kitchen
            Our Solution:
• Designing a short-range wireless product for
  numerous consumer venues/ hospitality
• Allows customer to electronically page
  individual service providers for attention.
• Added feature of allowing internal
  communication amongst service providers.
• Allow page request display in order to reduce
  unproductive travelling time.
          Our Prototype:
• A prototype design customized to cater for a
  restaurant environment
         Product Overview
•   SWIS SerCal (Server Caller)
•   Example scenario : Restaurant
•   Bluetooth wireless scheme
•   3 component units
      SerCal Components
• Kitchen Unit:
 Central communication hub. (Computer)
 Updates waiters on customers paging and
      orders ready.
• Server Unit:
 Portable Unit (eg. PDA) carried by waiters
 Displays customer & kitchen paging status
 Updates kitchen on table orders.
• Table Unit:
 Pages for waiters’ attention
How the SerCal Works
           SerCal Design
• Hardware:
  SerCal Table Unit
          SerCal Design
• Hardware:
  Logitech V270 Bluetooth wireless mouse
                  -Bluetooth 1.2 wireless technology
                  -Adaptive frequency hoping
                  -Battery life up to 2200 hours
                  -Features low battery indicator light
                  -1000 dpi optical engine
                  -Uses 2 AA batteries
                  -3 push buttons with scroll wheel function
          SerCal Design
• Hardware:
  Pushbuttons (final design):
  NKK single element DPDT LED UB series
                  -Double pole double through
                  -PCB mountable with gold contacts
                  -Power level 5A at 30V DC
                  -Dielectric strength 0.4VA
                  -Mechanical life > 1000000 operations
                  -Electrical life > 10000 operations
                  -Operation temperature -25 – 50 degrees Celsius
                  -LED rating: 1.85V at 20mA
                  -CSA certified
        Software Design
• Two parts:
  – Kitchen
  – Server
        Kitchen Software
• The kitchen software is responsible for
  – Receiving signals from the Table Units
  – Relay the signals to the desinated Server Unit
  – Receive orders from the Server Unit
         Server Software
• The Server software will:
  – Allow the user to take orders and send to the
    Kitchen Unit.
  – Receive signals from the Kitchen Unit that tells the
    server what table is in need.
                 Flowchart                                   Start

       3                                                                                                        1

                                                   2                                                       No
                             No                                            No
                                  Did Table 1                                              Did Table 2
                                                          New order?
                                     Call?                                                    Call?

                                          yes                        yes                             yes

                                                       Input the number
                                Display which          and type of orders                  Display which
                              request is called.         the customer                    request is called.

                    No                                      Store the
  Did Kitchen                                           different orders
     Call?                                                for different

  Display which                                         Send out request
  Table is ready         3                               for Kitchen Unit
from the kitchen.                                      through Bluetooth.

                                                       Confirmed request
                                                       from Kitchen Unit?


                                                           Send out
                                                        customer order.



Implementation & training
• Users will be instructed by SWIS engineers, or
  use the device under the supervision of SWIS
• Manuals will be provided, which include:
• The customer manual
  for an audience with minimal technical expertise
  one page leaflet with proper instrument care and
   sensor placement information
Implementation & training
• Server worker manual
  for an audience with general experience with
   electronics device
  provide training for complete device usage of two
   modules: Table Unit and Server Unit
• Service crew manual
  for an audience with expertise in electronic device
  complete training, setup, troubleshooting, and
   device characteristics information for all three
   modules: Table Unit, Server Unit and Kitchen Unit.
Production timeline
Component            price       quantity   subtotal
Logitech V270        $27.50      2          $55
Bluetooth mouse
Tungsten E2 palm     $244        1          $244
Blue tooth Dongle    $20         1          $20
Toggle switches      $4          4          $16
Misc. ( LEDs, casing, $10        -          $10

TOTAL                                       $345
• Engineering Science Student Endowment
  Fund of $50
• Remaining costs were borne by SWIS.
       Why SWIS SerCal?
• Greatly reduces redundant waiting time
• Effective and efficient use of resources
• Real time request/status updates (important
  for time critical services, ie. hospital)
• Increased productivity
• Improve customers’ impression!
We would like to thank the following people:
• Dr Andrew Rawicz for his guidance, suggestions and
  endorsement of funding from the engineering
  science endowment fund.
• Mr Mike Sjoerdsma for imparting us with valuable
  knowledge on project documentation and
• Mr Brad Oldham and Ms Lisette Paris Shaadi for
  taking time off to cater for consultation sessions and
  providing advice with regards to our design
Thank you!

  Done by:
  Aron McKinnon
  Raymond Tan
   Peter Chen

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