Our biosensor group focuses on state-of-the-art electronic sensors for sports, consumer, medical and military markets.
Using expertise in wireless communication, bio-sensing, low power circuit design and power harvesting, MaXentric generates ground breaking projects that push the limits of sensor devices in terms of size and power consumption.
Power Supplies for Implantable Devices
Implantable medical electronics have advanced significantly since the advent of the artificial cardiac pacemaker. Today the field is expanding faster than ever, enabled by the dense computing capability of modern integrated circuits. As the size of implantable electronics decreases, the potential for new applications increases. The ability to further shrink electronic implants is often limited by the size of their power supplies. At MaXentric this issue is attacked from two different directions. Ultra-low power circuit design is used to minimize the power consumption of the implantable electronics and advanced power supply design is used to maximize the power density of the power supplies.
- Near field magnetic coupling used to transmit power in a transcutaneous manor from an outside power source into the implant
- Power is harvested directly from the function being sensed
- Electromagnetic radiation is harvested and used to power the device.
The used of rechargeable batteries that require user interaction (plug into the wall to recharge) are often cumbersome when applied to biosensors. This is especially true when the user is wearing the device 24/7 and not always near a power source. The MaXentric teams has created biosensors that operate continuously via power harvested during operation.
Example scenario: The VitalH is a wireless cardiac and respiratory monitor that is self-powered via energy harvested from respiration effort. It measures, displays and stores heart rate, respiration rate and ECG. The system is embedded within an athletic shirt.
MaXentric has developed a system that measures vital signs at a distance in a non-contact manor. The system, VitalWave, uses UWB micro-Doppler radar to access the vital signs of multiple users in an environment. Sensing can be done through obstacles. The system has applications is sports medicine, hospital monitoring, disaster relief and triage.