New concept to develop a safety sensor network for continuous noninvasive blood pressure monitoring

This paper proposes a continuous, non-invasive blood pressure monitoring system concept, which uses a safety microprocessor to connect sensors for building a body sensor network. The changes in Pulse Transit Time (PTT) can be detected with the sensor network. The microprocessor gathers the PTT and other vital signs of the patient to derive changes in blood pressure. Through the new Bluetooth protocol for safety systems, the current blood pressure value can be sent to a variety of terminals present in the wireless network, such as mobile phone, PC and medical monitoring systems. The 1oo2 architecture of the used microprocessor can provide high safety to a rating of safety integrity level 3 (SIL3), thus the whole network can meet the safety required in medical care systems.