Technology Innovation

Mashavu is a computer-based system set up as a kiosk with an attractive industrial design and user-friendly interface. Various biomedical sensors capable of recording images, body temperature, lung capacity, body weight, etc. will be attached to the kiosk. These biomedical devices are low-cost, rugged, and easily replaceable with the ability to be manufactured locally.The significant cost reduction is achievable through virtual instrumentation. The COTS devices embed the primary sensor, signal conditioning, user display and networking support on the device itself. The Mashavu devices consist of only a sensor and the minimal essential hardware around it. The sensor output is digitized by a DAQ device shared by all the devices. The signal conditioning and user display is handled by software on the computer, turning the entire computer into a virtual instrument. Hardware is more expensive and repairing the devices is unrealistic. Computer software is “free”, requires little maintenance, and is easily upgradable through the Internet connection itself.

Data transmission is accomplished by a cell phone connected to the computer using a USB data cable—a setup known as tethering. Cell phones can connect to the internet through a mobile gateway using a technology called General Packet Radio Service (GPRS). This technology allows cell phones to receive e-mail, browse websites as well as upload data to them. It is widely available across East Africa by Zain, Vodacom, and SafariCom. The Mashavu web portal features an intuitive user interface with secure login to verify identity and protect patient privacy.

Block Diagram of the Mashavu Kiosk