There is a proliferation of health-tech wearables in recent years as the healthcare paradigm shifts from discrete monitoring in a hospital to continuous monitoring at one’s convenience. However, regular change of batteries and power outlet charging are often the pain points of using these wearables. Moreover, electrical charging points may not be readily available, especially when the user is in an outdoor environment for prolonged periods e.g. field trips that stretch for a few days. For these wearable devices to be powered for uninterrupted usage, there is a need for a constant source of external energy supply.
Ambient energy can be harvested from the body's activities and serve as a reliable external energy source for wearables and portable electronic devices. As this energy source is readily available, energy sustainability can be achieved for the electronics and sensors in wearables and portable devices. However, it remains a technological challenge to develop such energy-harvesting devices.
This technology offer is a 2-D non-resonant energy harvesting method using hybrid energy harvesting mechanisms that can harvest energy from body movements. It can also be customised to harvest wave or wind energy, etc.
The technology owner is keen to do R&D collaboration, technology licensing and test-bedding with application developers intending to use motion energy harvesting solution to power devices.
The technology offer is a hybrid energy harvester that has a unique design configuration. It can overcome the following challenges of existing technology:
The energy harvester, which is of 6cm (L) x 6cm (B) x 4.5 cm (H), is able to generate a power density of 4.8µW/cm3 at acceleration of 1g and frequency of 4Hz. It can be resized and scaled-up according to the application with customisable component selection.
Besides harnessing energy from human body motion to power wearables and portable electronics, the energy harvester could also be customised for the following applications to harness:
This technology offer has the following advantages compared to existing energy harvesters in the market:
The technology owner is keen to do R&D collaboration, technology licensing and test-bedding with application developers intending to use motion energy harvesting solutions to power devices.