Microcontroller system for measuring respiration

The system measures the inspiratory and expiratory pressure of the subject (patient). The maximum duration of one test is 10 seconds with a measurement resolution of 0.1 seconds. Measured pressure range 0 – 20 kPa. The number of tests stored in the non-volatile memory of the spiro tester is 5. The ability to connect via USB to a PC or mobile device.The maximum pressure value is fixed, which is displayed on the display. There is a mobile application. Data exchange takes place via USB. The mobile application allows you to: enter, store and correct the testee's identification data, display the dependence of inspiratory and expiratory pressure on time (draw graphs), calculate respiration parameters, and compare with the testee's individual reference data.