Mobile Phones Design Situation English Language Essay

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There are many mobile phones on the market these days to suit just about every market. My father and I are keen spear fishermen, we occasionally travel far off shore in search of new reefs and drop offs. This is the same with many other boat enthusiasts and fishermen. Immediately in this situation, normal mobile phones become useless as they lose reception and become very venerable to the elements of the ocean. Normal mobile phones aren't water proof either which puts the phone at a large risk of being water damaged at any point. There are also many unnecessary features that are not used when you are out at sea such as Bluetooth, active gaming and music. My father being a practical person always complains about how many pieces of electronic equipment there is, such as the fish finder, uhf radio and the mobile phone, wishing there was just one that did the job of all three.

Design brief

Currently on the market there aren't any mobile phones that meet the above criteria. My new proposed mobile phone will have to be small, light weight, easy to use and have a recognisable layout, similar to a standard mobile phone. This will allow the user to control the phone in much the same way as a normal mobile phone while also having features to satisfy the design situation. These features will include:

Code division multiple access (CDMA) capability for long distance reception.

Water Proof

Inbuilt fish finder

Larger buttons for easy use

Large LCD (liquid crystal display) screen for a clear image.

5 mega pixel underwater camera and video streaming for action shots

Easy to use slide keypad

GPS (global positioning system)

Robust, because of the unpredictable weather conditions

Limitations

During the construction stage of the mobile phone there are several areas that are going to hinder or disrupt the process of production of the mobile phone. Some of these are listed below.

Time allocated, duration of term two.

School interruptions that are not stated in the timetable e.g. 24th April ANZAC day liturgy, 6th May bully buster's day, 11th May School cross-country and School assemblies.

Pupil free days e.g. Australia day 26th of January, student free days 27th of April.

The workshop may not always be available as we might have a theoretical lesson.

The Equipment that is provided might not be sufficient for all aspects of the construction.

Not having full knowledge of woodwork and things surrounding it such as joints and construction techniques.

Lacking in workshop skills may affect the speed at which we work and the quality of the finished product.

The limitations of the design situation.

Design specifications

This phone will provide an easy, user friendly phone that has long distance reception capabilities (CDMA) while also being extremely strong and water proof to cope with the unpredictable nature of the ocean. The phone will also offer other features such as the underwater camera with red tint for optimum picture quality, enlarged keys and a big LCD screen for clear reading from either the fish finder or the GPS. The phone will also incorporate many extra fetures that divides this phone from all the others. These are listed below:

Code division multiple access (CDMA) capability for long distance reception.

Water Proof

Inbuilt fish finder

Larger buttons for easy use

Large LCD (liquid crystal display) screen for a clear image.

5 mega pixel underwater camera and video streaming for action shots

Easy to use slide keypad

GPS (global positioning system)

Robust plastic and silicone outer shell, because of the unpredictable weather conditions

Tools

Bandsaw: The Bandsaw is useful for cutting stock to size and cutting out shapes. It contains a serrated blade that forms one continuous loop. The blade is stretched over two pulleys, the upper one idle, and the lower one driven by a variable speed electric motor. I will use this machine to cut out the outline of the phone and to separate the sliding back from the body.

Figure 1

Radial Arm Saw: The radial arm saw is one of the most accurate, versatile and easy to use woodworking machines available. A radial arm saw basically consists of a motor suspended from a long arm, in a yoke, which allows multiple degrees of rotation for the motor assembly. All parts of the radial arm saw may be locked into particular positions as desired by the user. To achieve a simple 90 degree cross cut the saw is pulled from back to front, through a slot in the fence. The Radial arm saw will be used in the initial stages of the phone to cut the Bolsa wood into the rough shape of the phone

Figure 2

Figure 3

Chisel: The term Bevel Edge Chisels is typically given to normal wood chisels or firmer chisels with blades that are beveled on the long edges. These bevels make the blade less strong compared to a straight edge chisel but in return allow for better clearance when trimming joints such as dovetails. For the production of my mobile phone I will be using the chisel to shave off, carve into and to make small cuts to shape the keypad and the screen.

Table saw: A table saw is the most common piece of large woodworking equipment. Because of its versatility, when only one piece of large woodworking machinery is owned, it will often be a table saw. The saw consists of a circular saw blade, mounted on an arbor, that is driven by an electric motor (directly, by belt, or by gears). The blade protrudes through the surface of a table, which provides support for the material (usually wood) being cut. The table saw will be used in the first stages of the phone to cut the Bolsa wood into the shape that I want.

Figure 4

Bobbin sanded: the bobbin sander is a great piece of equipment. It comprises of a flat table with a rotating cylinder in the middle that bobs up and down. This is used to sand hard to get places, circles and curved surfaces. The sanding cylinders come in many different sizes to suit the job that you are doing. The sanding sleeves are also replicable so you don't have to buy a whole new cylinder each time the sand paper is worn out. This is a highly useful piece of equipment in the situation of making the mobile phones as it will help to get into the small grooves and corners that many of the other pieces of equipment are not able to get into. The bobbin sander will be used to make the finger grooves in the back sliding park to the phone and to sand down the curved surfaces.

Figure 5

Tool justification

All of the previous machinery and tools (Figure 1-5) are all of the main pieces of equipment that I am going to use in the production of my proposed mobile phone. For example the Bobbin Sander shown in figure 5 is a highly useful piece of equipment which will be used to get into the small grooves, corners and rounded surfaces that otherwise no other piece of equipment it able to. All of the tools and machinery that I will use are highly accurate, which I believe will enable me to bring out a better finished produce than if I were not to have them.

Finishes

There are many different finishes that have been used on mobile phones over the past 20 years. Finishes add an important aspect to the phone which is the look also known as aesthetics. When you buy a phone nowadays a large part of your decision is dependent on the appearance. Finishes also provide the phone with other features such as; silicone/rubber to take an impact when dropped, to water proof and for grip, aluminum; non-corrosive, robust. Some of the more commonly seen finishes that would be suited to my proposed mobile phone are listed below:

Stainless steel

Metallic paint (application, powder-coated, spray can, paint brush)

Matt paint (application, powder-coated, spray can, paint brush)

Shined plastics (mechanically done)

Coloured rubber or Silicone (done by computerized robots)

Finishes Justification

The finishes that have been listed above are all possible options that may be used on my mobile phone. These were chosen to suit the conditions and elements that the phone may be exposed to in the ocean. For my finished product I will be using a matt paint finish.

Materials

Jelutong: Although technically a hardwood it has many properties similar to balsa wood. These properties such as the low density, straight grain and fine texture mean it is easily worked with both machines and hand tools, best used for sculpturing, carving, architectural models, patternmaking and craft work. Jelutong is naturally found in parts of Malaysia and Thailand and now has become a protected species as it has been over harvested. The tree is now grown commercially for timber.

Figure 7

Figure 6

Figure 9Bolsa wood: Scientifically named ochroma lagopus, is a relatively fast growing hardwood plant, found primarily in Central and South America. Balsa wood is one of the lightest varieties of wood available whilst also being remarkably strong. Bolsa wood is also easily worked much like Jelutong with the cutting and shaping done with very simple hand tools, sanding blocks, chisels and X-acto blades. Rarely are power tools necessary unless you are cutting down larger blocks. Because raw balsa wood has such high moisture content, it must be dried in a kiln for at least two weeks before it can be used commercially. The drying process creates an ultra light wood which is usually cut into sheets or round dowels. Balsa wood does have a grain, so consumers should be aware of what type of cut they need for a specific project. Typically Bolsa wood has been used for the production of surfboards (figure 9), making model airplanes and in architectural/engineering models.

Figure 8

Acrylic: is a useful, clear plastic that resembles glass, but has properties that make it superior to glass in many ways. Common brands of high-grade acrylic include, Plexiglass and Lucite.

There are two basic types of acrylic: extruded and cell cast. Extruded or "continuous cast" acrylic is made by a less expensive process, is softer, can scratch easier and may contain impurities. Cell cast acrylic is a higher quality acrylic. Acrylic is used to make various products, such as shower doors, bath enclosures, fish tanks, windows and skylights. There are many reason acrylic is chosen over glass these are listed below:

It is much stronger than glass, making it much more impact resistant and safer.

Insulates better than glass, potentially saving on heating bills.

Half the weight of glass. This makes working with acrylic much easier.

It can also be sawed, whereas glass must be scored.

Transparency rate of 93% makes acrylic the clearest material known. Very thick glass will have a green tint, while acrylic remains clear.

For all of its advantages, there are two disadvantages of acrylic: it is more expensive than glass, and if exposed to a direct flame it will melt and eventually burn. In my project I will be using acrylic to insert into the front of the phone to act as a LCD screen.

Justification of Materials

These are some of the modeling products that are available on the market. These are easily sculptured, very accessible and relatively cheap, making them perfect products to design my prototype mobile phone. For my project I will be using balsa wood as it is easy to wood to work with and very accessible. I will also be using Acrylic for the screen in my phone as it is a clear product that comes in different tints to make the phone look better.

Adhesives and Fasteners

Epoxy: Strong and durable, fast setting two part epoxy adhesive that dries crystal clear making it ideal for areas where an invisible bond is required. When mixed and applied it will adhere in 5 minutes. Initial bonding is achieved in 20 minutes with maximum bond strength after 16 hours. It is also weather, yellowing and shock resistant. This will be great to glue the numbers on the keypad of the phone as it will not show any glue marks that you may find with other glues.

Positives:

Bonds a variety of surfaces

Dries Crystal Clear so there's no visible

evidence of repair

Quick setting in 5 minutes

No clamping necessary

High water resistance

Forms a rigid, durable bond

Can be used for gap filling (Surfaces need not mate closely)

Good chemical resistance

Heat Resistant

Doesn't yellow over time so is ideal for use on glassware

Figure 11

Figure 10

PVA Glue: Poly vinyl acetates are one of the most common adhesive on the market. They come in a variety of types all very much alike and specific to what they are designed to glue.

PVA is only toxic to ingest and does not emit any harmful fumes.

PVAs need pressure to adhere.

PVAs are water based making it easy to clean up.

Most PVAs are not water proof. Some of the yellow PVA's are water resistant.

PVA sets best in good air circulation, at room temperature.

In some cases you can add sawdust to it to make it into gap filler.

Figure 12

Hot Glue: A form of thermoplastic adhesive that is commonly supplied in solid cylindrical sticks (figure 14) of various diameters, designed to be melted in an electric hot glue gun (figure 13). Like any glue, it is designed for certain bonding requirements. It dries fast, is relatively non toxic, and is easy to use. There are different types of hot glue, ranging in melting temperature, and strength. The drawbacks of this glue is that it can melt the material you are working with, it can leave some spider like webs if the application is wrong.

Figure 14

Figure 13

Justification of adhesives and fasteners

On my project I am going to use PAV glue as it is the most assessable and suited to the job I am doing. Like epoxy, PVA dies clear which will help with the aesthetics because there wont be any visible evidence of the adhesive used.

Joints

Stopped housed joint: this is the only joint that I will be using in the making of the mobile phone. This joint will act as the sliding mechanism of the key pad allowing it to slide from the back of the phone. For this to work I will make the joint looser than normal allowing it two slide freely up and down. This intern will significantly make the joint much weaker making it very fragile. This was the best joint as it allowed the keypad to slide up and down while also having a point at which it will stop when you slide it up to the back of the phone. This type of joint is commonly used in shelving and other joints that you don't want to join to be visible.

Similar products on the market

Figure 16G'zone Type S

Figure 15Positives

Completely water resistant and water proof to 1 metre underwater

Extremely tough, all the electronics inside are covered in a protective bed of silicone, surrounded by a sturdy frame of reinforced plastic with a coat of polyurethane

Two megapixel camera with video streaming (176x144)

Led light

Talk time 203 minutes

Supports Bluetooth, inferred, mp4, video viewing, music play

Simple and easy to flip mechanism

Has screen on front (figure 15-16) to give basic information such as time, date, missed calls, messages, etc.

Aesthetically pleasing

Dedicated volume and PTT keys

Negatives

Is not waterproof under 1 metre of water

Low resolution camera

Does not have any long range reception capabilities

Camera and video streaming doesn't work under water

Only standard 203 minute battery life which will not be able to cope with long periods out a sea.

Only supports standard messaging and calling capabilities with no long range reception connectivity.

Figure 17

Positives

light weight, 100g/128g without/with battery

7 soft keys and 10 programmable short-cuts

Headset and USB charging port

Dedicated volume and PTT keys

Tough, shock resistant exterior

Scratch resistant LCD screen

Great long life Lithium-ion battery with 5 hours of talk time

Loud speaker

Simple key pad with easy to use navigational arrows

Removable battery with charging port

Basic and easy all round use

Negatives

Small hard to see LCD screen

Not water proof in any way

Does not host any long distance reception capabilities

Does not support any navigational or GPS functions

No light, camera or video streaming

Anthropometrics

Anthropometry is the measure of woman/man (anthro=man, pometry=measure). The study of anthropometry is the study of human body measurements to assist in understanding human physical variations and aid in anthropological classification. Anthropometrics is used to know where objects should be positioned and what height or size the object should be. For example, if there were to be an emergency phone on an elevator, what height it should be at, what size should the phone be for easy accessibility and handling, the size of the keys on the keypad, etc. The anthropometries used in my mobile phone are the finger grooves to help pull down the key pad, the enlarger keys and screen.

Figure 18

Ergonomics

Ergonomics is essentially about "fitting work to people". It's the process of designing or arranging workplaces, products and systems so that they fit the people who use them. When ergonomics is applied correctly in the workplace and everyday life, visual, muscular discomfort and fatigue are significantly reduced. In the diagram above (figure 18) the size of the finger tips, pads and grasp of the whole hand are given. I have used these to determine the size of the phone, keys on the keypad and the finger grooves located on the side of the phone. As my proposed mobile phone is designed for the same market as any other phone (people without special needs, arthritis, dyslexia) the ergonomics will be much the same of that, of a normal phone. The key pad will be much the same as a normal slide phone with some extra keys on the side to make it easier to navigate the fish finder and GPS system. As the phone may get wet or slippery it will have slotted groves in the side of the sliding mechanism to make it easier to grasp. These grooves will be shaped to the size of the top of the index finger and thumb for optimum grip. These measurements can be taken from figure 18.

The screen will also be a larger than usual so that it will be able to be placed in a docking station and be viewed from a distance. This will allow you to drive the boat and look at the GPS or fish finding system clearly while driving. The screen will not be too big so that the average male/ female can easily get a grasp around the phone. All of the measurements for the chosen design of the phone will be derived for figure 18.

Justification of Ideas

Design Idea 1

This is a classic design of mobile phone. As it is a water proof phone it has a covering of silicone which adds strength and shock resistance to it while also having lots of grip when it gets wet and slippery. Other design feature of the phone is the key pad which has been compacted to make room for the extra large LCD screen. This has been done by taking out the second row of numbers and put it into the first.

Design Idea 2

Design two is a slim, futuristic touch phone. This phone is designed to sit primarily on a docking station to serve its purpose of a GPS and Fish finder. When you need the use of the phone it is has an easy to use interactive touch screen. This phone is fully water proof and has a red tinted camera so are able to take clear picture underwater and above. When you want to use the GPS or fish finder, one touch of the G/F button and you are back in business.

Design Idea 3

Design idea three is a model on the normal slide phone with extra fetures. This design has much the same design as design two but with a sliding keypad. The phone is also fully water proof with an underwater and above camera. The phone is fully cased in a robust outer shell with a coating of silicon on the outside to come with the water and unpredictable weather of the ocean. The phone also features a navigation pad to operate the GPS and Fish Finder when the keypad is up and external keys like the picture button and volume/zoom control.

Justification of Chosen Design

I have chosen design idea three as it has the most advantages. Out of the three phones I believe that this phone is the most user friendly phone with the normal sliding keypad and navigational pad. The sliding keypad was one of the main deciding points as it offer the use of a normal keypad when you want and if it is not needed it can tuck back behind the phone making the phone less cumbersome. Out of the three this phone is the toughest and is the best suited to the conditions of the ocean. Over all, this phone best fits the description of the design brief.

Procedure

Step 1: Cut the square shape of the phone using the radial arm saw and table saw to the dimensions 1300mmx900mm (add 2mm extra in the thickness of the phone, this will be explained in step 4). When cutting it out make sure to cut on the external lines so that none of the measurements are out.

Step 2: Now using a campus and the measurements specified of the worked drawing, draw on the rounded edges and then cut them out using the band saw. Refer to diagram below.

Step 3: Using a compass and T-square mark out the front screen and back sliding keypad with the measurements specified on the worded drawing.

Step 4: you are to cut off the back part of the phone where you have previously marked for the sliding keypad. Once the cut has been made you will notice that the two back faces are at different heights. This will have to be sanded flush (this is why you are told in step one to add 2mm to the thickness). Refer to diagram below.

Step 5: Mark out the keys on the keypad and the one on the front screen of the phone to the measurements on the worked drawing and make these extrude 1 mm from the existing surface.

Step 6: Round and sand down all external edges.

Step 7: Measure down 20mm from the top of the sliding back and draw a line horizontal to the top. Refer to diagram on next page.

Step 8: With the Bobbin Sander sand a semi circle 10mm in on marks previously drawn.

Step 9: With the bevel edged chisel shave the marked out screen down 3mm from the exiting surface.

Step 10: Now on the back sliding keypad two vertical lines 25mm down each side and 11mm from the edge. Make a triangular cut in the opposite face in the same place as the lines have been marked.

Step 11: cut out two pieces of wood slightly smaller than the cuts you have just made and glue them to the markings made in step ten. These two surfaces should then slide together.

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