Project introduction ASICS Europe B.V. is a technology and innovation driven company that wants to consider the environment by enhancing environmental initiative. In addition, ASICS wants to expand their apparel business globally. As industrial designer you learn to create products, combining user insight, sustainability and technology to serve the consumer. Consequently this project evolved, a cooperation between ASICS and the Delft University of Technology emerged and the goal of the project was determined: “Design a human-powered, not encumbering, wearable, safe, eco-friendly, and inexpensive running LED-light as an innovative and commercially feasible new product for ASICS.” Analysis To understand the project goal the different aspects of the context were analysed. Firstly the function of the final product was determined to create visibility of the runner in the dark and so enhance the runner’s safety. Human-powered products showed to be very suitable in terms of the application of a portable running-light. Additionally human-powered products have many significant advantages concerning environmental issues. LED-light aspects were considered. LED’s have a significant long lifetime. Characteristics influencing the visibility of a LED are its brightness that depends on the LED’s viewing angle, the illumination of the surroundings and the sensitivity of the human eye. Red light is best visible for the human eye and requires the minimum energy. Consequently red LED lights are most significant in terms of the developed running light. Although you have to bear in mind the minimum forward voltage and maximum current.In addition the environmental aspects were analysed. ASICS recently implemented and is now operating conform the environmental ISO 14001 norms. Other sport companies are also developing and implementing eco-strategies. The majority of trail companies are members of Bluesign®, which advises companies on new environmental textiles and fabrics. In regard to the environmental friendliness of the final product, a long product lifetime is preferred. Eventually the environmental burden of current running light and the designed product can be compared by calculating the Eco-costs of both products. Since the energy is harvested from the running movement it is important to understand running. When running each leap raises the center of gravity during push-off and lowers it on stance phase as the knee bends to absorb the shock. According to research on movement, running is determined to have a gait cycle frequency of 1.5 Hz. The shock reduction is affected by changes in stride length and frequency and is especially sensitive to stride length changes. In regard to running, the safety of runners is important. In particular in the darkness, pedestrians including runners are more vulnerable and accidents are more likely to occur. The crucial aspect on behalf of the safety of a runner is detection. Increasing the conspiquity of runners in the dark makes a substantial difference and makes runners less vulnerable to accidents. Flickering light and increase of luminance raises conspicuity and are therefore important to incorporate in the running light. In order to power the LED-light with human-power an appropriate energy conversion technique needs to be selected. From the reviewed literature two conversion techniques were most significant; 1. The piezoelectric PVDF foil technique and 2. The electro-magnetic technique. Because of the high power densities and specific power outputs the literature illustrated, the piezo electric PVDF foil technique is very interesting. Only current pricing and complexness of the technique withholds its viability in terms of the running light application. Assumingly, this technique will be more interesting after 5 years from now, as prices will decrease and the technique will be developed further. However, the electromagnetic technique also proved to have a relatively high power density and specific power, to be inexpensive, uncomplicated and proved to unobtrusively generate enough power to illuminate a LED form human vibration. Concluding, the literature showed the most relevant conversion technique in terms of this project is the oscillatory electromagnetic conversion technique developed by Saha et al. Consequently this technique is selected to further evaluate its preferred application. In order to verify the possibilities of the electromagnetic technique, first the method of A. Jansen (2011) was applied. The method provides first insights in the feasibility and efficiency of the human-powered electric system and determines the added value of the human- powered product. Concluding from the feasibility study the human-powered electromagnetic system would be able to power two red LED’s with a duty cycle of approximately 7%. To gain insights in the behaviour of the selected linear inertial electromagnetic generator of Saha et al., the system was modelled in MATLAB. The MATLAB model illustrating the systems behaviour is represented by its transfer function. After understanding the systems behaviour MATLAB Simulink models illustrated the possible applications of the system. Both sinusoidal and impulse excitation on wrist and chest were modelled. The results illustrated that the wrist impulse excitation produced the optimum energy outputs. Consequently this application was selected and a physical model was made to proof the illumination of two LED’s by using the human motion of running. Concept phase After selecting the right human-powered energy system, ideas on the running LED-light were generated in cooperation with ASICS. The ideas were evaluated by means of the preset list of requirements. The most interesting ideas were developed into three concepts; Eco-light, Clickin and the A-Led. Both the Clickin and A-Led were commercially attractive for ASICS since they included a docking station, which could be patented. The light could only function when the ASICS docking station is present. However the Eco-light has a larger viewing angle and consequently creates more visibility so safety. In addition the Eco-lights is superior, concerning all other preset requirement of the product. The Eco-light is comfortable and can be worn on other running bands. Together with ASICS the Eco-light was selected to be developed further. Optimization The Eco-light was optimized by reducing the size and the material of the design. Material and assembling processes were reconsidered. In terms of the branding an in-mold label was chosen. Besides a reflective band is incorporated in the final design. When the selected Eco-light was optimized a user test was conducted by means of the physical model. Deriving from the user test, the physical model proved to be sufficient in terms of this project. Yet, they experienced the Eco-light as comfortable. While running two of four participants experienced a ticking sound. However the conducted user test is not completely representative, since only four participants conducted the test. The produced sound could be reduced in several ways; the effect on the generated power should be examined. In the designed folder, ASICS can provide the consumer with user instructions and the main advantages of the Eco-light. The possibilities of storing the energy comprise a more complex electronic circuit ,resulting in more energy dissipation and higher costs. Therefore the desire of storing the energy should be reconsidered. Including the suggested packaging, the production costs will be less then 5,- when the produced amount is more then 12500 pieces. There are two interesting disposal options of the Eco-light which ASICS could consider and elaborate further; dismantling the product manually by ASICS and outsource the recycling or dispose them by the regular take-back system and consider the machine dismantling scenarios. Eventually the Eco-light will burden the environment anyway. However compared to ASICS current running light, the Eco-light is significantly more environmental friendly. EvaluationFinally the Eco-light was evaluated and proved to be an human powered Eco-light that is a comfortable, eco-friendly and commercially attractive, unique and innovative running light for ASICS. Conclusions ASICS as an Innovation and technology driven company wants to collaborate with the Delft University of Technology in order to design a human-powered running LED-light. Firstly the relevant topics concerning a human-powered running LED-light are studied, including a literature review of the different conversion techniques, that can convert the human energy to electrical energy. The electromagnetic conversion technique was chosen to be most significant in terms of this project. The selected system designed by Saha et al. was analysed and optimized by means of MATLAB and MATLAB Simulink modelling and simulations. Resulting in the system characteristics of the electromagnetic system enabling to proof the working of the generator by a physical model. After determining the human-powered electronic system creative sessions were held from which three concepts derived. In collaboration with ASICS one concept was chosen, evaluated and further optimized. Resulting in the final design; the Eco-light, a human -powered innovative, unique, commercially attractive,comfortable and eco-friendly running light. Recommendation Lastly recommendations are presented concerning the final Eco-light, ASICS Europe B.V. and to the Delft University of Technology. In terms of the Eco-light ASICS should further examine and measure the visibility and average illumination of the Eco-light,conduct a more profound user research to support the examined user test. Additionally ASICS should consider patenting, other applications or functions and costs. As well as conducting an Eco-costs/Value ratio assessment and examine the environmental promotion and strategy of the Eco-light within ASICS portfolio. In terms of ASICS Prospects, ASICS should consider investing in researching the promising PVDF foil technique and e-textiles. ASICS should consider cooperating with the Delft University of Technology.Consequently, the Delft University of Technology should consider cooperating with ASICS and enhancing sports in their education program. The Delft University of Technology should consider making sports and measurement material available for students,promote the electronic supporting department DEMO, and enhance A. Jansen’s method in its education program.