3rd year MEng Design Engineering student at Imperial College.  London based, Oslo raised.

 

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1. FlowTEX

A stripped down, low-cost spirometer designed to deliver precise lung volume measurements with an integrated vortex whistle.

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2. BMIC

Combining computing, electronics, and mechanics, BMIC creates something fun and interactive that gives each user a unique experience.

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3. DAL

The DAL sustainable razor is a unique design with an organic material experience, challenging today's fast-moving plastic consumerism.

Stripped down, high performance.

 

Chronic lung disease is the third most common cause of death in the world. Being prevalent in low-income countries, we saw the need for an affordable and easy way of delivering precise lung volume measurements. 

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Research & Ideation

There are several ways to measure lung volume. We studied the spirometers context of use and undertook stakeholder and user analysis to narrow down our research to three main technologies; differential pressure, turbine, and ultrasound.

As they all showed certain limitations we had to widened our exploration to discover the profitable vortex whistle that was taken forward due to its simplicity, accuracy, and cost.

 
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Technology research

The fundamental principle of vortex whistle spirometry is that the pitch of the sound produced is linearly proportional to the flow rate of fluid. The frequency of the pitch can be altered by changing the dimensions of the Inlet, outlet and the cavity of the whistle.

The initial design was produced using example values found in the research state of this technology.

 
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ITERATIONS

By iterating through several 3D printed geometries it was found that, in general, smaller geometries produced higher pitched sounds.

Consequently, by reducing the size of the whistle the minimum frequency produced by the whistle was increased to a level which was above the general background sound. 

 

WORKS-LIKE PROTOTYPE

We used MATLAB to record with the works-like prototype. 

The aim was to produce a frequency against time graph for a recording taken from the built in microphone onboard the computer running the script. This would later be replaced by the more accurate and applicable external microphone. 

We tested the final working prototype multiple times with a Sensirion Flow Meter to validate our results. 

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ERGONOMICS & FORM

After making a thorough design specification, model massing was used to get an understanding of the different overall shape, and to validated our belief that a vertical handle was not necessary, minimising the cost of material. 

A rough CAD was created from conceptual sketches. Fast, low quality, 3D-prints were used to rapidly iterate the design after user testing. It was then made sure that the final works-like vortex whistle could be integrated in the looks-like prototype. 

 

 
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LOOKS-LIKE ProTOTYPE

The final prototype was 3D-printing in ABS. The wanted surface finish was obtained by sanding down the 3D-print and applying a thin coat of spray paint, then sanding it down, then re-painting, over and over, creating a realistic surface finish. The prototype was then painted with the final coat and the logo was added. 

 
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Product concept

The spirometer is simplified to a transducer (orange) and USB-C port (purple) and used with a computer, tablet or smartphone, displaying an instructive interface for patients, minimising the time needed for a nurse or doctor, who’s time is already in high demand. 

By having a separate more powerful decide, it means all the processing, coaching, results and data bases can be stored on a common device. This eliminates the requirement for additional modules, keeping the entire product incredible cheap to manufacture and easy to upkeep. 

The spirometers main body is split into two main components, exposing surfaces for easy cleaning, while shielding the electronic components. 

As health and hygiene was a main consideration for our design specification, a stand was designed to house and keep the product clean in between uses as countertop surfaces might not be clinically clean in low-income settings. 

 

 

Final design

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Please note that this was a group project and not my sole work.
Fellow team members were Shivam Bhavnagar, Ben Greenberg and Kenza Zouitene.

A unique experience for each user.

 

We were given the task to design and engineer an electromechanical machine that generates sound by integrating machine elements, sound design and technology.

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Ideation

We used tools such as brainstorming sessions, mood boards and idea generation to uncover our creative sides and maximise the concept exploration.

We quickly discovered that we wanted to create a fun installation the user would interact with. Our vision became to combine computing, electronics, and mechanics to give each user a unique experience and different outputs from time to time.

 

DESIGN PROCESS

We chose to document our design process by filming our work from the early prototyping stages all the way to the final design.

As the clip shows, low fidelity prototypes showing proof-of-concept were continuously iterated and redefined before coming together in the final design.

 

 
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Mechanisms

We developed two main mechanisms for hitting the percussion instruments, one for the snare drum and one for the base drum, each actuated by a small solenoid motor.  

The mechanisms were first prototyped in low-fidelity, using cardboard, plywood and string. Basic CADs where then created, and SolidWorks motion studies was used to define their dimensions. Parts and links were laser cut and iterated, before the final mechanisms were assembled. 

 

CIRCUITRY

Circuits for the solenoids were constructed, including a diode to eliminate flyback and a transistor to separate the solenoid power supply from the RPi. These components were selected dependent on what was available and best suited to the voltage required by the solenoids. The diagrams below show the various circuit used to control the bass drum, the snare drum and the cymbal. 

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Controller & Code

The controller works similarly to a step sequencer. The three horizontal rows each represent a drum and the four vertical columns represent the four counts. The user can select the preferred combinations of drums and counts to create variations of unique drum beat.

The python code for the BMIC ran on a Raspberry Pi. We first wrote a program for one row of the controller and tested this with a simplified breadboard prototype. We then added the rest of the rows and expanded the code to work for all four.

We chose to keep the controller open to show the somewhat complicated wiring for the Raspberry Pi.

 

Final design

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Please note that this was a group project and not my sole work.
Fellow team members were Tilly Supple, Carla Urbano, and Bea Lopez.

Challenging today's fast-moving plastic consumerism.

 

Personal care products are often cheap and short-lived. They end up hurting our planet, as part of the 8 million tons of plastic being dumped in our oceans every year. I set out to design a razor with a minimal environmental impact and circular product life cycle. 

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Background research

Several tools and approaches were used to build a strong understanding of the market, user experience, and areas for innovation around the personal care product. This shaped a initial design concept that was presented in a visual report, serving as the projects first deliverable. 

Additionally the report included a benchmarking of the Reserve Shave 5 Razor with a system analysis, SWOT-analysis, disassembly, and eco-audit.

 
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IDEATION & Design vision

I wanted to add an emotional value to the razor, and chose to use form and material to do so. Not only would it be aesthetically pleasing, but the user would be more likely to take care of their razor and keeping it for longer, improving the sustainability of the product life cycle. I looked to brands like HAY and MUJI for inspiration.

 
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Material Selection & life cycle

CES EduPack was used to make an overview of potential materials. Stone was shown profitable, with low values for embodied energy and CO2 footprint. A material vision was created, identifying its expreriental and technical properties.

Soapstone (also known as steatite) has been a medium for carving for thousands of years and is today used for large architectural features like fireplaces, floor tiles, and countertops. The idea became to use waste or recycled materials from these manufactures and suppliers.

 

 
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Product life cycle

The unique thing about soapstone is that when powdered, its widely used for making products such as baby powder, make up and soap, because of its high content of certain minerals.

In this way, if or when the user would like to dispose of their razor, the material could be powdered for an additional use. The powder from the manufacturing would also go towards an additional use, creating a no-waste supple chain, and a circular flow for the product lifecycle. 

 
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CAD

The algorithm aided design tool Grasshopper was used to shape the proposed design. Grasshopper is known for creating organic, unique, and natural shapes and surfaces. The design vision would then not only be achivied thought the material experience, but also trought the shape of the razor. 

Using Grapphopper, instead of making a model once, one set up an algorithm for the model. This allowed for easy and rapid iterations for the user testing. 

 
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ergonomic Iteration

Each iteration was 3D printed and user tested. Improvements were then made based on the feedback. The twist in the handle allows the user to place their thumb and middle, ring, and little finer on a flat surface. This feature secures the users grip, minimising the risk of the razor slipping, increaseing its safety of use, while still allowing smooth and comfortable manoevering of the razor in the hand, with no sharp edges causing discomfort. 

 
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Prototyping

The stone used for the prototype was sourced in the mountain area Rondane in Norway. Knives and sandpaper were used to shape the form after a quick model made of clay and 3D prints.

 

Final design

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