Presentation and Unit Overview

I felt pretty confident about our presentation overall, I thought our video was good and our speaking was good, however I do believe that we could have done more for behaviour that would have more clearly depicted how our device worked. Yasu said that it would be beneficial to either show how the fish moved or show renderings of the track on the top surface of the tank. Yoakim did provide a rendering on the final boards of the track so hopefully that is sufficient.


My general overview of ID 6 was that it was a good unit that really challenged us. I do think the downfall though was that being separated into object-behaviour-scenario tutorials meant that we were lacking in two areas. Scenario and Object were straightforward enough but Behaviour is not something we can teach ourselves. I know that Yoakim struggled in this area and it was to our disadvantage that Lisa and I were lacking in the skills to assist him. I've found that many of the students doing behaviour needed Yasu's constant help in this area which probably acts as an indication that this was too complex and/or that not enough time had been allocated to teaching this aspect. Some people excelled in this area, but for the ones that struggled, help was not always available.


I feel as a group we chopped and changed ALOT within our areas. I found that I was probably more suited to scenario and I found that Yoakim was probably more suited to object due to his expertise with CAD. Lisa was suited to both object and scenario. We sort of allocated tasks as we went and completed these pretty efficiently.

Final Boards

Lisa designed the final boards for our presentation. These boards document the significant aspects of the scenario-object-behaviour sections of the project.

Final Design Brief

It was my responsibility to work on the design brief for submission on Tuesday the 8th of November. Here is the finished product;

The Product Design Specification

Date: 6/11/11

Project: I Sense You

Group Members: Bec Cunz, Lisa Jonas, Yoakim Vasdekis

Introduction: The most basic meaning of the term ‘social telepresence’ has expanded from first referring to industrial remote control systems to currently also including references to virtual realities and interaction among geographically separated members of a group. (Tammelin, In: Media Publication 8).

Project brief:              

To design a product that facilitates users the ability of being aware about the presence of friends or family and the status of a particular situation. The product design must address the significance of presence in a context that excludes face-to-face interaction.

Function: The Physh system increases the motivation to exercise within a group of friends and allows them to set individual goals, pushing the results of each other. This product provides a competitive element, allowing goals to be set and broken. It appeals to the user using a fun and quirky display.

Client requirements:

·      Men and women aged between 15-25

·      These people lead busy lives with university study, full time or part time jobs and other commitments

·      Often struggle to find the right balance between work, and/or study and maintaining a healthy lifestyle

·      Motivation to exercise is lacking

·      Passionate about new technology or novel items

·      Possess a competitive edge

·      Encouraged by friends and family getting fit and active

·      Struggle to put the time aside for exercise

·      Have different schedules to friends so group exercise does not always work out

·      Once exercising, often need encouragement to push themselves further

·      There is no current method for measuring the exact amount of exercise done

·      Nothing is currently making exercise a fun event between friends

Design requirements:

·      Need to encourage users to exercise in order to get fit

·      Allow users to set their own personal goals in order to increase competitiveness

·      Must provide an accurate measure of exercise

·      Provides a fun and quirky way for the users to become involved in exercise

·      The product needs to be desirable to the selected persona

·      All users need to be able to view the results of the other selected users

1. Physical and Operational Characteristics

a. Performance requirements:

Wristband

·      The heart-rate monitor wristband must be worn whilst exercising so that the increase in heart rate can be recorded and sent to the Physh tank display.

·      The device is turned on and will start reading heart rate once the catch with the batteries in has been closed.

Fish

·      2 or more are used depending on the users

·      Move up or down depending on the data received from the wrist band

Motor and Axel

·      Mounted to track

·      Connected to Circuit Board via cable.

·      Moves around the track and moves the fish in a life like manner.           

b. Safety: Understand any safety aspects, safety standards, and legislation covering the product type.  This includes the need for labeling, safety warnings, etc. Consider various safety aspects relating to mechanical, chemical, electrical, thermal, etc.

·      The wristbands must be waterproof to ensure safety and reliability of the device when sweat and rain come into contact with the device.

·      Both the wristband and the motor and axel contain or are connected to a circuit board.

c. Accuracy and Reliability: 

·      A score is created from the wristband by recording the users BPM every  minute and averaging it then multiplying that number by the number of minutes that the users heat rate exceeds 90 BPM. E.g. 160BPM x 48 Min. = 7680

·      Once within the vicinity of the fish tank, the wristband will transfer the score to the tank.

·      The motors will move the user’s fish responding to the user’s score. The fish will move higher and faster if the user has a high score in the last seven days and slower and lower if they have a low score in the last seven days

Establish limits for precision (repeatability) and accuracy (how close to the "true" value) and the range over which this is true of the device.

d. Life in Service:

Wristband

·      Use is dependant on the individual and their exercise habits

·      It can be assumed that the wristband electronic components would be active for a maximum of 2 hours per day

·      It may be transported while worn by the user over a distance

·      While not in use the electronic components will be inactive and will only become active when the catch with the electronic components is closed

·      The three batteries will need to be replaced when necessary

Fish

·      The fish will adjust in height once per day

·      The fish will have a long life in service and will only need to be replaced when the materials degrade

Tank

·      The tank will have a long life in service and will only need to be replaced when the materials degrade

Motor and Axel

·      Up to 10 000 revolutions per day if constantly active

·      Could be on stand by to reduce electricity usage.

e. Shelf Life:

·      All components should have a long shelf life while in storage

·      The batteries in the wristband will need to be replaced when needed

·      The components may be exposed to dust and dirt

f. Operating Environment:

·      The wristband could be exposed to fluid, varying temperatures, shock, dirt and dust

·      The tank could be exposed to handling, dirt and dust and breakages

·      The track could be exposed to corrosion

·      The fish could be exposed to handling, dirt and dust and breakages

g. Ergonomics:

·      Wristbands would be sold in at least two different sizes to account for differing wrist circumferences.

·      We would aim to account for the 5^th percentile to 95^th percentile (13.7-16.2cm) (NASA, 2008)

·      The tank needs to be designed so that a hand can be placed inside, when assembling.

h. Size:

·      The wristband must be slim line with a maximum width of 15mm. The depth of the band is 4mm in the design, which is ideal.

·      The battery compartment of the band should be the minimum circumference necessary to house the batteries.

·      At this stage it is relatively large, if smaller batteries could be used then the size could be reduced which would be ideal.

i. Weight:

·      The wristbands need to be light enough to not detract from the physical activity being undertaken by the user/s

·      The fish need to be light enough to to easily be moved by the motor around the track.

·      The fish tank needs to be light enough that it can be easily lifted, moved, transported and mounted to the wall

·      The materials that will be used in the design are silicon, ABS and Perspex and have a high strength to weight ratio

j. Materials:

·      The use of glass for the fish tank was ruled out as it would be more likely for a breakage to occur, especially for the intended purpose of wall mounting.

·      Therefore it was concluded that Perspex would be a better solution as it is not as fragile and has a similar appearance.

·      The fish could be manufactured with ABS plastic and be injection moulded.

·      ABS provides durability at a low cost.

·      Fragile materials should not be used for the fish in the instance that a collision may occur

·      The wristbands need to be malleable, durable, and have the ability to withstand various environmental conditions

·      They also need to be comfortable for the user and be easily worn and taken off

·      Silicon has been chosen for these reasons in addition to the fact that it is highly transparent which will allow the LED’s to be seen clearly.

k. Aesthetics, Appearance, and Finish:  Color, shape, form, texture of finish should be specified where possible (get opinions from as many sources as possible).

·      The fish tank is transparent and wall mounted for aesthetic and novel appeal

·      The edges of the fish tank are curved predominantly for aesthetic appeal and also to differentiate the product from the standard fish tank on the market.

·      The fish are injection moulded using different colour ABS that corresponds with individual users.

·      The details of the fish, such as the eyes, the tail and the fins would be painted on for novel finish

·      The wristbands are also colour coded to correspond with individual users (eg. Sally has a red fish and a red wristband and her friends know that red is the colour she is associated with)

·      The wristbands are as slimline as possible and are curved in form for comfort and aesthetic appeal

2. Production Characteristics

a. Quantity:

·      Fish are dependant on number of users

·      Lasers are dependant on number of users

·      One tank per user

·      One circuit board per tank (on the underneath of the lid)

·      One track per tank

·      One motor and axel per fish

·      One wristband per user

·      Three batteries per wristband

·      Circuit board contained in the wristband

·      Three infrared sensors contained in the wristband

·      Twelve low current LED’s per wristband

b. Target Product Cost:

·      Perspex cost is $180 per square metre

·      The silicon would equate to about 20c per wristband.

·      $4-$5 per infrared sensor

·      $3-$5 per Servo motor when buying in 200+ quantity

·      LED’s approximately 20c per piece

·      LR44 1.5 Volt Button Cell Battery $5-$8 per 100

·      Laser light magnet $3-$4

3.  Miscellaneous

a. Customer: The novel solution is appropriate for our target market but had this been altered to perhaps an elderly market than the solution would need to be changed to something this age group would appreciate. This could be the output of the plant and the correlation of the wellbeing of the person to the wellbeing of the plant.  

Input/Output

I created an input/output diagram to clearly distinguish what information or activity the user must input to the system and what they will receive and view as an output.