Based on respiratory inductive plethysmography（ RIP） technology

telescopic belt is tied to chest or abdominal of patient

this volume change during respiration can cause position change of the grating embedded in the telescopic belt

and grating sensor can detect precisely position change of grating

and then process of respiratoryis detection can be achieved. The system uses MCU to store signal and transmit

and then calculate respiratory rate and ventilation using smart terminal; through networks

the system can realize storage

comparison

analysis and monitoring of respiration status remotely. By experimental comparison and analysis on nine testers

it is proved that this system has high precision

good performance

and strong anti-interference.