Respiratory Rate is a very important physiological parameter to be monitored in both healthy and critical condition, as it gives meaningful information regarding their respiratory system performance as well as condition. Respiratory rate is an important vital sign that can indicate progression of illness but to also predict rapid decline in health. For the purpose, non-invasive monitoring systems are becoming more popular due to the self-evident increase in patient comfort. It can be hard to predict respiratory failure as it can lead to life threatening condition within a short span of time. Thus it necessitates continuous monitoring of respiratory activity and suitable monitoring equipment are developed which could be life-saving. Respiration Rate measurement is based on the Thoracic Expansion measurement includes the sensors that are placed on the thorax. This review uses thermocol ball for the measurement of respiratory rate/count. Respiration Rate metera lowcost design approach uses sensors that are mounted within the oxygen mask. Thus the Respiratory Rate Monitors discussed above provide optimal result to detect changes in the severity of chronic illnesses. Following invention is described in detail with the help of Figure 1 of sheet 1 showing the block diagram, Figure 2 of sheet 2 showing input and sensing circuit and Figure 3 of sheet 3 showing the flowchart of the system.
