NOAH by ViVian Ng

VIVIAN NG WING MAN 12104898D TUTOR: MARKO STANOJEVIC SD4467 CAPSTONE PROJECT 2 PRODUCT DESIGN

The concept of NOAH is an in-water product to make swimming safer and more enjoyable in open water area. Especially in the area that lifeguards are absent.

USER

TARGET GROUP

People who likes to enjoy in open water where life-saving professionals are absent.

NEEDS A system that can offer a layer of protection to enhance their enjoyment in water.

CHARACTERISTICS POTENTIAL DROWNING VICTIMS & PEOPLE ON SHORE / WATER CRAFT

SWIMMERS without any floatation device overestimate their own ability swim away in small groups/alone NON-SWIMMERS floatation device is needed extra care is needed

not trained to distractions to lay person to may not help

recognize drowning victims respond to a swimmer in distress due with drowning victims without any tools

CASE STUDIES DROWNING ACCIDENT RELATED TO YACHTING IN HONG KONG

08/09

victim age: 22 missing when swimming in the water during yachting with friends.

07/27

victim age: 20 drowning in the water cause by physical decline.

07/25

victim age: 45 swimming alone for a certain distance

07/20

victim age: 24 fall into water from the yacht and have been found until the next day.

06/09

victim age: 24 fall into water from the yacht and have been found 3 days later

ANALYSE In the situation, people are easily disturbed to focus on the people who are swimming in that area. As their job is not searching for someone who is in danger. So when lifeguard is absent, the swimmers are exploding themselves in high risk of drowning. As well as if the swimmer are missing ,otherâ&#x20AC;&#x2122;s will have no clues to locate the swimmer.

CONCEPT DIRECTION

POSSIBLE SOLUTIONS

! PAIN POINTS

THINGS ARE MISSING

something locate the people in the water something monitor the people in the water something helps the distress swimmer call for help

something provide immediate floatation to the distress swimmer

DROWNING LIFE CYCLE

PRE-EVENT Prevention is the most important paramount in drowning reduction.

LIVE-EVENT Need immediate help from someone or something.

PREVENTION OF DROWNING

RECOGNIZE A DROWNING VICTIM

POST-EVENT After care is need for the victims

PROVIDE FLOTATION

REMOVE FROM WATER

PROVIDE CARE

EXPLORATION OF

DESIGNS DIRECTIONS The design opportunities are shown and the design development will focus on two directions. The aim is provide a layer of protection to the user instead to enhance their enjoyment in water.

Wearable that provide immediate helps.

Some device that float on the water that provide helps throughout the process.

that provide RESEARCH ON Wearable immediate helps.

PRODUCT EXAMPLES

& ANALYSE

research on the exceed products in the market

LIFE JACKET are the most common Personal Flotation Device (PFD)in the market. A piece of equipment designed to assist a wearer to keep afloat in water. The wearer may be either conscious or unconscious. There are mainly four types of PFD, they are designed for different kinds of situation. PREVENTION OF DROWNING PRE-EVENT Prevention is the most important paramount in drowning reduction.

TYPE 1 Off-shore life jacket over 20 pounds of buoyancy, designed to turn an unconscious person face-up. Best for open, rough or remote water, where rescue may be slow-coming.

ADVANTAGE Floats you the best Turns most unconscious wearers face-up in water

DISADVANTAGES Bulky Inconvenience when wear it

Supporting point of the PFD neck back waist stomach chest

The supporting point of the PFD neck chest

TYPE 2 Near shore buoyant vest minimum 15.5 pounds of buoyancy, designed to turn an unconscious person face-up. Good for calm or inland water, or where there is a good chance of fast rescue

ADVANTAGE Turns some unconscious wearers face-up in the water Less bulky more comfortable than Type I

DISADVANTAGES Not for long hours in rough water Will not turn some unconscious wearers face-up

TYPE 3 Flotation aid-minimum 15.5 pounds of buoyancy, not designed to turn an unconscious person face up, more comfortable for water sports. Good for conscious users in inland water and where there is good chance of fast rescue.

ADVANTAGE Generally the most comfortable type for continuous wear Designed for general boating or activities that is marked on the device Available in many styles, including vests and flotation coats

DISADVANTAGES Wearer may have to tilt head back to avoid going face down Not for extended survival in rough water Wearer's face may often be covered by waves All wearers need to try it in water prior to going boating

The supporting point of the PFD chest stomach back waist

The supporting point of the PFD depends on how the user grab the device

TYPE 4 Throwable device minimum 16.5 pounds of buoyancy, designed to be grasped, not worn.

ADVANTAGE Can be thrown to someone. Are good backup to wearable PFDs

DISADVANTAGES Not for unconscious person, non-swimmers or children Not for many hours in rough water.

ANALYSE These types of PFDs mostly are Bulky and design for emergency

For type 1 and 2, it require user to wear them before they jump into water for escape. But it is difficult for people to do fine motor movement to wear the jackets under panic situation.

For type 3 its design for the users when they do the water sports. Although it is less bulky then the first two types, but most of the swimmers who participate in water sports will underestimate the dangerous in water and not to use it. As well as the designs are bulky for water activities or too eye catching.

For type 4, a third person is needed to throw the devices to the distress swimmers. It is difficult to shoot the devices to the victims if you donâ&#x20AC;&#x2122;t have the power and agility skill. So it will become back up plan.

TYPE OF INFLATABLE LIFE JACKET Inflatable technology is applied on the life jacket, for easy storage and light weight design. They are inflated by the compressed air in the co2 cylinder.

STEPS OF ACTIVATE

This is the step how to wear on the life jacket and how can it activate.

1. Fastenate the uninflated life jacket in position 2. Pull the button hanging on the jacket 3. Or blow the air into the jacket by the tube

APPLICATION

This technology is mainly applied to the life jacket that use on the plane. Cause they need to control the weight that carries on the plan. And they need to minimize the space.

It also applied to the life jacket that design for people who goes to do water activities, and go on board for water sports.

Although LIFE JACKET are the most common Personal Flotation Device (PFD)in the market. There are other new designs that trying to replace these traditional PFDs.

RESEARCH

PRODUCT EXAMPLES

& ANALYSE

research on the exceeding products in the market

SAFETY FLOAT AND DRY BAG works as an float buoyancy which is attached with an adjustable belt to your waist and is carried in the current behind you

ANALYSE PERSONAL THOUGHTS PROS let swimmer be visible in a certain distance bag can be a rest buoy for the swimmers one per person

READY STAGE

CONS & misunderstand the situation of the swimmers (the device floating = swimmer safe) not helping the victim call for help difficult for the victim to follow the strip and find the buoyancy part under panic the form will be easily slip away form their hands

SWIMMING IN THE WATER

IN NEED

RESEARCH

PRODUCT EXAMPLES

& ANALYSE

research on the exceed products in the market

Swim IT (inflatable safety device) it is an open water swim safety device, that provide an immediate buoyancy to the swimmer by inflatable gas bottle.

ANALYSE PERSONAL THOUGHTS PROS less constrain to the swimmer before activate light and easy for carry

READY STAGE

CONS & need to roll up the body to activate the device (on upper leg) need to wear the device over hand in water support the whole body only by floating up the head

SWIMMING IN THE WATER

IN NEED

RESEARCH

PRODUCT EXAMPLES

& ANALYSE

research on the exceeding products in the market

KINGII (inflatable safety device) It is a portable flotation device. The device contains an inflatable nylon balloon thatâ&#x20AC;&#x2122;s stored inside a small pouch next to a carbon dioxide cartridge.

ANALYSE PERSONAL THOUGHTS PROS smallest in size light and easy to carry less resitrain and discomfort to swimmers

READY STAGE

& CONS not helping others to locate the people in the water need to use consistency strength to hold the balloon cannot release the body cause the muscle high conscious

SWIMMING IN THE WATER

IN NEED

ANALYSE EXPECTATION

& PROBLEMS

These types of design are allowing for more freedom of movement than a life jacket. Most of them will apply the inflatable technology to their product. Their selling point is about as reliable as a traditional life jacket, as well as more comfortable and less bulky.

But the disadvantage is nearly all of them are just try to provide buoyancy and the user need to grab tightly by their hand until someone safe them of they get better. But the shape of the device is not well designed for gripping. Even the victims cannot rest in a relax gesture for a period of recovery. As well as for the body parts they chose are not the best part that can support a human body weight.

BRAINSTORM SKETCHES CONCEPTS

Wearable that provide immediate helps

The concept direaction is about, to design wearable for the swimmers that are able to act as a life saving device when the user inflate them. It will be a comfortable and non bulky design, that are stylish and supportive for the target users.

CONCEPT

SKETCH IDEATION The concept is to create a stylish inflatable vest for the swimmers. The buoyancy balloon are mainly located on the area of under arm. That area is the best to let the body rise up in water. PREVENTION OF DROWNING

PROVIDE FLOTATION

CONCEPT

SKETCH IDEATION Seat + wearable design that are easy and fast to wear on by a gross movement during the boat accident.

PREVENTION OF DROWNING

PROVIDE FLOTATION

Development sketch of the design, to see how can the inflatables can support the swimmers body. And let the passenger can wear on the life jacket in a fast and easier way.

that float on the RESEARCH ON device water to provide helps

PRODUCT EXAMPLES

& ANALYSE

research on the exceed products in the market

BUOYS is a type of floating device that can have many purposes. It can be anchored or allowed to drift with the sea wave. These markers may be equipped with lights and may be marked with letters or numbers for marine chart identification.

PREVENTION OF DROWNING PRE-EVENT Prevention is the most important paramount in drowning reduction.

TYPES OF BUOYS

FOR MARKING AREA different types of buoys are mainly used for marking particular area for water activities. They give signal to the people or boat around they.

DIVING BUOYS mark an area where scuba diving (or other such diving activities) are taking place. White in colour Carries a red flag not less than 50 cm square with a white diagonal stripe

SWIMMING BUOY Swimming Buoys mark the perimeter of swimming areas. White in colour Yellow light may flash in a 4-second sequence

CAUTIONARY BUOY Cautionary Buoys mark dangers such as underwater structures, areas where no safe channel exists or may mark traffic separations. Yellow in colour Identification letters displayed May carry a top mark that is a single yellow â&#x20AC;&#x2DC;Xâ&#x20AC;&#x2122; shape Yellow light may flash in a 4-second sequence

Anchorage Buoy Anchorage Buoys identify areas where it is safe to anchor. Yellow with a symbol representing an anchor Sometimes identified by letters Yellow light may flash in a 4-second sequence

Mooring Buoy Mooring Buoys are the only Aid to Navigation that you can legally secure your boat to. White in colour with an orange top

ANALYSE buoys are mainly use in a fixed area

These buoys need to fix in position by putting the anchor to the bottom of the sea. the movability is low, and complicated to relocate them.

Most of the buoy are keep and fix in the sea for a long period of time. For the short time use, mostly they will tie the buoy to the boat of the swimmerâ&#x20AC;&#x2122;s body.

But these product are not design for provide floatation to the swimmer, maybe a help hand for the diving to follow them back to the surface.

After understand the traditional buoy, will focus more on the rescue function of other products. These products are come to the victims in the life event, The victim are not wearing or carrying them before the event..

RESEARCH

PRODUCT EXAMPLES

& ANALYSE

research on the exceeding products in the market

Pars(Flying Quad copters Will Deliver Life Preservers) is a ship-based quad copter that would be launched into action immediately upon being notified of a potential drowning person in the area.

ANALYSE PERSONAL THOUGHTS PROS faster then life guard getting to the victims quickly lower resistant then device in the sea

& CONS difficult to shoot on the the victim the victimâ&#x20AC;&#x2122;s need to pass though the swimming ring need a ship base platform for the quad copter need professionals to identify the victim

IN NEED

RESEARCH

PRODUCT EXAMPLES

& ANALYSE

research on the exceeding products in the market

EMILY(Emergency Integrated Lifesaving lanYard)

real robot lifeguards will start dragging troubled swimmers in to shore at Malibuâ&#x20AC;&#x2122;s Zuma beach.

ANALYSE PERSONAL THOUGHTS CONS & six times as fast as a human requiring a lifeguard to stand on the beach and guide it to a victim PROS

swimmers have to do is grab on and keep hold

difficult to remote control the device from the same sea level although there is a bot to identify underwater movements, still may distract by other people swimming around need professionals to identify the victim

ANALYSE EXPECTATION

& PROBLEMS

Use robot to replace the human in the rescuing process. To increase the efficiency of the rescuing process. Lay person in life saving can also use the product.

But the device cannot detect the victims. Even the swimmer cannot do anything instead of struggle in the water and wait for other to see if the person is in trouble. Also need to control the device by the third person.

BRAINSTORM SKETCHES CONCEPTS

Wearable that provide immediate helps

The concept direction is about to design a floating device that can locate the swimmer and notify other people. The device can follow the swimmers when they swim around, by powering by the drone in the water.

CONCEPT

SKETCH IDEATION hope the device can come to the victims and provide flotation, and also notify others the location of the swimmers to others.

PREVENTION OF DROWNING

PROVIDE FLOTATION

REMOVE FROM WATER

These are some design that will come to the victims and let them grab on and take a rest. The second one will lower their body to let the victim reach for it easily.

This is a drone that carries an inflatable to the victims when they are in needed and the upper part are attachable, that able to replace by other parts.

STAGE 2 CONCEPT FINALISE & RESEARCH

After the research and sketch development on the two design directions , here comes to the flow of the final concept and how I develop the final design details.

HOW IT COMES TO MY MIND

The generic idea of the design and main concept that I am going to develop for my product.

Something personal that the swimmer can wear on before they swim in the open water. Because it has the lowest possibility for them to loss it in water. Also an accurate device that can locate them in water.

A floating thing that can follow the swimmer. As well as provide floatation for the distress swimmer. The reason for me to separate the inflatable function from the wearable is that I want to minimize the product that they wear in the water. At the same time not reducing the supporting function of the helping device.

A system that can offer a layer of protection to enhance their enjoyment in water.

! PAIN POINTS

THINGS THAT WILL BE IN THE DESIGN

Locate the people in the water Monitor the people in the water Helps the distress swimmer call for help

Provide immediate floatation to the distress swimmer

CONCEPT

DEVELOPMENT

A development of the concept, it is about a design product system that can offer a layer of protection to enhance userâ&#x20AC;&#x2122;s enjoyment in water. Basically there are two parts of the design concept. The part is about to connect the swimmers to the device, the second part is the device that put into the water ans serve their functions.

CONCEPT

Parts included There are 4 parts in the design that I plan to design for the concept. They are working together to achieve the aims in my design.

WEARABLE GO WITH THE SWIMMER Wearable for the swimmers bring into the sea. Basically the wearable is connecting to the drone part of the system and others who wear the wearable. So the product can locate the swimmers. And the people can call for help by it.

WATER DRONE

A part with motivation to let it move in water. It can follow the swimmer and serve the function base on the adapted parts.

KICKBOARD / SAFEBOARD Board design that able to support human body on water,it can serve as a kickboard for non-swimmer as well as a safe board for victim to rest on

MONITOR CAMERA

can set on the water or in the water, the people on shore can see the situation of the swimmer. Also use to avoid collision of other swimmers on the sea

These four parts are the main element that I will focus on and show the developments. Hopefully, through these four, parts I can achieve the two main aims that I want to do from what I have been shown before.

DESIGN DEVELOPMENT each part of the system

After the generic concept and showing whatâ&#x20AC;&#x2122;s are include in the whole system. Next is how each part are developed and why they are important. The design details are included in this part. And the technical research are going to help me in the design.

WEARABLE GO WITH THE SWIMMER This is the part that each swimmer will bring closely with them into the water and it is the important part that the swimmer can send signal to the water drone part in water.

HOW to fit the user easy to carry into water lowest hinder to the swimmer easy to operate in water

WHY is it important personal to the swimmer locating the swimmer by GPS another way for swimmer ask for help instead of just struggling for help

STAGE OF DROWNING By understanding the different characteristic of each stage of drowning can help us to design what is most suitable for the swimmer when they need helps and where to put the wearable on is the most suitable for them.

wave for help various degrees of panic keep his head out of the water reach for an aid as it is presented act on clear instructions from a rescuer poor swimmer who has gone beyond his abilities

vertical in the water no effective leg movement cannot respond to commands arms are extended to the side unable to call or wave for help head may bob below the surface head thrown back with face upward cannot reach for nearby rescue aids will generally go under in less than a minute

DISTRESSED SWIMMER

ACTIVELY DROWNING VICTIM

PASSIVE DROWNING VICTIM

swimmers may black out lose consciousness in the water some part or all of the way to the bottom victims may float face down at the surface immersion in cold water can numb a swimmer causing unconsciousness because of coldness of the water

DISTRESSED SWIMMER

The whole design concept is about to provide helps to the distressed swimmer before they become an active drowning victim, and the variable is the way for them to ask me for help instead of just struggling. When there is no one focus and pay attention to search for drowning victims like lifeguard do.

WHAT ARE THE CRUCIAL POINTS

wave for help various degrees of panic keep his head out of the water reach for an aid as it is presented

POSITIONING OF THE WEARABLE

Here are the body parts that are common for wearable. For my design I need to choose a parts that the swimmerâ&#x20AC;&#x2122;s hand are able and easy to reach in the water, and bring the least hinder to them.

HEAD BANDS NECK BANDS CLOTHING WRIST BANDS RINGS

ANKLE BANDS

WRIST PART is the part that human can easily grab on by themselves most of the situations, especially when the swimmer is in a distress situation, it is easier for them to grab on their wrist than other body parts, as they are in a vertical situation and the lower body are in the water.

HOW TO LOCATE THE SWIMMERS By simply adding a location transmitter to the wear and receivers on the devices will easily do the job. Here are the details of the GPS technology and support that it is possible to add to the design and benefit it.

Geographic Information Systems (GIS) For large-scale location-tracking systems, it is necessary to capture and store geographic information. Geographic information systems can capture, store, analyse and report geographic information.

CUSTOMERS STREETS PARCELS ELEVATION LAND USAGE

REAL WORLD

This system is not suitable for the design, as my design is for locating people in a particular are and it is unnecessary to have the detail geography information.

Global Positioning System (GPS) A constellation of 27 Earth-orbiting satellites (24 in operation and three extras in case one fails). A GPS receiver, like the one in your mobile phone, can locate four or more of these satellites, figure out the distance to each, and deduce your location through transliteration. For transliteration to work, it must have a clear line of sight to these four or more satellites. GPS is ideal for outdoor positioning, such as surveying, farming, transportation or military use (for which it was originally designed).

smallest GPS module: origin GPS

This is one of the best choices that can applied to the wearable device. And it is commonly used in the mobile today, this is no longer an expensive technology that we are not able to afford it. And it is small enough for us to put into wearable.

Radio Frequency Identification (RFID) Small, battery-less microchips that can be attached to consumer goods, cattle, vehicles and other objects to track their movements. RFID tags are passive and only transmit data if prompted by a reader. The reader transmits radio waves that activate the RFID tag. The tag then transmits information via a pre-determined radio frequency. This information is captured and transmitted to a central database. Among possible uses for RFID tags are a replacement for traditional UPC bar codes. See How RFIDs Work for more information.

radio-frequency identification tag

MAX 10-15 feet range

RFID SENSOR

Although the hardware in this method is the thinnest and cheapest, but the area range is too small, as well as the sensor is not able to get the location of the tag accurately.

Wireless Local Area Network (WLAN) Network of devices that connect via radio frequency, such as 802.11b. These devices pass data over radio waves and provide users with a network with a range of 70 to 300 feet (21.3 to 91.4 meters).

internet

modem

wireless router

This type of wireless locating method is mainly known as WIFI connection. It is used for transmitting signals from one end to another. But the area is limited, and it can not show the location of the product that sending out the signal.

labtop

GPS application in existing products This is the existing product that have applied the GPS sensor in it. And their function is going to locate moving objects. And let the user find them back.

Tile by Reveal Labs

Device that helps you find lost things quickly using simplicity combined with technology.

Car GPS Navigator

This type of device is commonly used in every day life, even more people replacing it by the phone that have gps function.

Tagg by Whistle Labs

Tagg the Pet Tracker is a boon for protective pet owners, with fast and accurate location updates

CHOICE OF POSITIONING After all the research and consideration, I will apply the Global Positioning System (GPS) in the wearable that are going to locate the swimmer in the sea.

HOW TO ACTIVATE THE WATER DRONE How can the swimmer activate the water drone to come to them when they are needed. There are two ways. The first one is heart beat detection. This is the auto activate system. The second one is the self activate mode. The user can activate the water drone by pressing the wearable.

RAPID OR IRREGULAR HEARTBEAT Uncomfortable changes in heart rate are the most frequently reported symptoms of panic attacks. Over 80% of those experiencing panic list a rapid or irregular heart rate as a symptom.

Swimming increases heart rate during the exercise. However, it is still about

13 PERCENT LOWER

compared to increased heart rate when engaging in non-aquatic exercises such as running

So if you are in distress situation or drowning situation in water, your heartbeat will become faster and irregular. This is easy and simple to detect by a heartbeat sensor. And by programming the water drone can be activated by the signal.

HEARTBEAT MONITOR Nowadays heartbeat sensor commonly uses in the smart wearable especially for the people to do sports. They can record the process of the users for them to use like a reference to design their training plans. So why not apply it in detecting dangers.

Most of the device is located on the wrist and the chest, these two areas is the best for detecting the heart beat of the user.

PRESSURE SENSOR DETECTION This is the second layer of design for the swimmer to activate the water drone. The concept is that if they need help when the situation that their heartbeat is not high enough to reach the level to activate the water drone, they still can grab their wearable on the wrist to activate the water drone manually.

By adding a pressure sensor on the band, it allows the swimmer to grab on the wrist and activate the water drone part to come. And the wrist is the part that can be easily grabbed on as human are familiar with this gesture and the position of the wrist even when they cannot see it.

There will be three sensors on the band. That creates a circular area for the swimmer to add pressure on. That will be better than design a button for them. As human cannot focus on fine movement under panic situations.

GPS BAND After the talking about the design function of the GPS BAND. THis is the design and the discrition on the band.

TOP

SIDE

FRONT

LIGHT INDICATION When the system detects a swimmer in distress, interim warnings followed by a flashing of the light and vibrating alarm are triggered on the swimmer bands including the distressed swimmer and the nomal swimmer.

PRESSURE SENSOR DETECTION Pressure sensor puts inside the band, thatâ&#x20AC;&#x2122;s for the swimmer to press on. A certain area is provided, for easy detecting. HEART BEAT SENSOR The sensor is designed at the botton of the band that is contecting with the user for detecting their heart beat.

GPS BAND Is a band that can connect to the water drone for LOCATING THE SWIMMERS and TRANSMITTING SIGNALS to call the water drone for help.

RENDERING

FINAL MODEL

WATER DRONE

This is a water propulsion device. It is the universal part for adapting other parts. This part needs to be floating on the surface of the water. And come to the swimmer when they are in need.

HOW to fit the user easy to carry around able to follow the swimmer

WHY is it important It is the propulsion part of the device

RESEARCH

PRODUCT EXAMPLES

& ANALYSE

Example of propulsion device in water

SEA SCOOTER is an extra kick underwater. It is an underwater propulsion devices. Most of them are designed for one person. NUMBER OF PROPELLER : 1

HOW TO CHANGE DIRECTION ? Only one propeller is applied into the product. It can only go forward, if the user want to change their direction they can easily force their body to one side, then the centre of gravity will change instead to change the direction.

RESEARCH

PRODUCT EXAMPLES

& ANALYSE

Example of propulsion device in water

BOAT RUDDER that applied on boat. A rudder is a primary control surface used to steer a ship

NUMBER OF PROPELLER : 1

HOW TO CHANGE DIRECTION ? Rudder is a design that control the direction of the boat. By turning the rudder to the left or right. There are two types of rudder, but both of them having the same function.

INBOARD

STERNDRIVE

RESEARCH

PRODUCT EXAMPLES

ANALYSE

Example of propulsion device in water

NUMBER OF PROPELLERS : 2

ROV that use for underwater exploring, this robot will move underwater mainly powered by the two propeller at the back.

HOW TO CHANGE DIRECTION ? The idea is about using two propellers to control the direction. When the device want to go forward, two of the propeller will turn in the same direction, when it turn to the right the right propeller will turn left and the left propeller will turn right.

GO FORWARD

GO BACKWARD

TURN LEFT

TURN RIGHT

SKETCHES the form development of the water drone part

DEVELOPMENT OF THE DRONE After the research, I designed to use two propeller to move the device. And the following are the form development of the propeller part.

SIDE

TOP

Through out the development process. The form become more silmer as this part is put in the water so less resisitents are better. And lighter will make it move faster.

RENDERING DETAILS

WATER DRONE

After the design of propellers, here comes to the design of the buoyancy chamber. This part is mainly designed for controlling the buoyancy of the whole water drone.

HOW to fit the user

easy to carry around

WHY is it important

control the whole device to lower down when it comes to the victim

HOW SUBMARINES WORK As the Diving and Surfacing function is similiar to the submarines, so i ask about engineer is it possible to do the similar things in the design and the following are the sum up of the interview.

AIR TANK

VENT

BALLAST TANK OPENING To keep the submarine level at any set depth, the submarine maintains a balance of air and water in the trim tanks so that its overall density is equal to the surrounding water (neutral buoyancy).

All the openings are closed, then the density inside the ballast tank is enough to float up the submarine on the water surface

Water goes in and air comes out, then it will change the balance of air and water, then the submarine will reduce its buoyancy

WORKING MODEL TRY OUT This is the toy that simulate the ARCHIMEDES LAW . just understand the parts inside by assembling the submarine. The theory is similar as the real one. But this one donâ&#x20AC;&#x2122;t have the compressed air inside, they need to pump the air from the atmostphere.

FORWARD AND BACKWARD PROPELLER

Before pumping in water

CONTROL PANEL

BUOYANCY CONTROL PUMP

ON/OFF BOTTON

After pumping in water

WATER DRONE A part with motivation to let it move in water. It can follow the swimmer and serve the function base on the adapted parts. And it can contol the buoyancy of the deveice.

BUOYANCY CHAMBER This is a hollow space for air storage. and water storage after water is pumped in.

WATER PUMP The water pump is put inside for pumping in the water

AIR PORE This allow th air get inside, to rerise the device to the surface of the water

PROPELLER Two propellers are put under the buyancy chamber to make sure they are in the water and provide driving force to the whole device.

BUOYANCY CHAMBER By pumping in water to reduce the buoyancy of the propulsion module, pumping out water to increase the buoyancy.

RENDERING

100