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

 

FlowTEX

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

BMIC

Fun and interactive self-playing drum kit that combines  computing, electronics, and mechanics.

 

DAL

Unique and sustainable razor with an organic material experience challenging today's fast-moving plastic consumerism.

Snow-whegs

Redesigned biomimetic robot with motor, transmission, steering, and whegs design optimised for various tasks in winter conditions.

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 widen 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. 

 

PROCESSING AND CALIBRATION

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 an external standard acoustic microphone. 

We tested the final works-like prototype with a Sensirion Flow Meter to validate our results. 

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ERGONOMICS & FORM

After making a technical design specification, model massing and conceptual sketches were used to gain an understanding of different overall shapes.

A rough CAD was created from this. 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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FINAL FINISH

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 repeatedly. 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 designed and engineered an interactive electromechanical machine that generates sound by integrating machine elements, sound design and technology.

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Ideation

We used tools such as brainstorming, benchmarking, and mood boards to generate ideas, uncover our creative sides, and widen the concept exploration.

We wanted to create a fun and interactive installation. 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 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 solenoid motor.  

The mechanisms were first prototyped low-fidelity, using cardboard, plywood and string. Basic CADs were 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 rhythms.

The python code for the BMIC ran on a Raspberry Pi 3. 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.

 

Final design

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Please note that this was a group project and not my sole work.
Fellow team members were Matilda 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

Design 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 keep 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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designing for a CIRCULAR ECONOMY

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 supply chain, and a circular economy model for the product lifecycle. 

 
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Algorithm-aided design

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

The Grasshopper model allowed for easy and rapid iterations after user testing, tweaking variables for the design, such as the width and twist angle.

 
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ergonomic Iteration

Each iteration was 3D printed and user tested. 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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Small robot, big tasks.

 

Mini-Whegs™ are a set of biologically inspired robots that combine the speed and simplicity of wheels with the high mobility of legs. The outline for this project was to redesign and CAD a Mini-Whegs robot for a new specific task. 

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Understanding the requirements

The redesigned robot would be engineered to travel on snow and ice, operating in cold environments. The robot could assist in safety routines for checking thicknesses of ice, wildlife research and photography, and search and rescue operations. It was given the name Snow-Whegs.

 
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INITIAL DESIGn specification

An initial design was developed as a starting point for the design process, much of which built on a morphological analysis and research of the concepts behind the original Mini-Whegs and similar biomimicry robots. 

 
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STEERING

A rack-and-pinion system was designed to steer the robot.

When cross-country skiers embark inclines they often position their skies both facing outwards, for better traction on the surface. To make the robot perform better on snowy inclines, a similar approach was taken. Using two micro servos, operating two separate racks, the whegs could still be steered normally, but also put in a position both facing outwards. 

 

CUSToMISED UNIVERSAL JOINT

A universal joint was designed to allow for the required degrees of freedom to power and steer the wheels simultaneously.

Interference detection and motion analysis simulations were used to iterate the joint to its final design. 

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MOTOR AND POWER SUPPLY selection

The contact point between the whegs and an obstacle to overcome was used to derive the equation for the required torque the motor. A 6 V C geared motor motor was chosen, with a power of 2.4 W, speed of 100 RPM, torque of 90 mNm. Two flat lithium-polymer batteries were placed in the top lid, powering the robot for almost 4 hours.

 

TRANSMISSIOn ratio

The speed of the selected motor was lower than what required by the brief. A transmission ratio was calculated to increase the speed to the required 120 RPM. For DC motors, the torque decreased as the speed increased, but in this case, it was still higher than required. 

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optimised WHEGS

It was looked to sports equipment like crampons and snow shoes for inspiration, when re designing the whegs. The wider whegs allows for a bigger surface area on the snow for the robot to distribute its weight. The spikes improve the traction when travelling on ice. 

FEA was used to minimise material and weight.

 

modular Equipment

Special equipment, such as cameras and sensors, would be mounted on the Snow-Whegs for its specific tasks.

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LAYOUT

Components were cut out to dimensions in pieces of paper, to get an understanding of how they could fit together. 

The motor was placed in the middle of the chassis, to allow for the same type of belt to be used for both transmissions, and to localize the robots centre of mass. 

 
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ASSEMBLY DRAWING

The overall weight of the Snow-Whegs is approximately 222 𝑔 with an estimated cost of £91.93.

The motor is one of the biggest contributors to both weight, cost and size, and would therefore be a component probable to replace.

 

 

FINAL DESIGN

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Hi, my name is Ina.

 

I'm a 3rd year MEng Design Engineering student at the Dyson School of Design Engineering at Imperial College London.

"Design engineers are problem solvers who bridge the gap between traditional engineering and design." - Dyson School of Design Engineering.

My professional background ranges from a year in industry working for a civil engineering company to product design internships during my summers at university. I am just as comfortable working with high-fidelity 3D prints as with large industrial tools. 

I love traveling and seek inspiration from Japanese and Scandinavian design. In my spare time you can find me climbing mountains, watching good movies, or going to music gigs. 

I aspire to follow an interdisciplinary path where I can combine my personal interests with my passion for industrial design, interaction design, computer science, and the interface between humans and technology.

Thank you for visiting my portfolio!

CV    LinkedIn

 
 
Year in Industry, Civil Engineering. Operating a crane. 

Year in Industry, Civil Engineering.
Operating a crane. 

MEng at Imperial College, Design Engineering. Board for self-balancing dancing robot.

MEng at Imperial College, Design Engineering.
Board for self-balancing dancing robot.

Intern at Pivot, Product Design. Extinguisher for VR fire training system.

Intern at Pivot, Product Design.
Extinguisher for VR fire training system.

 
 

daily work on INSTAGRAM