Breathing data from a piezoresistive breathing sensor

A new wearable sensing system of respiration rate based on a piezoresistive FlexiForce sensor has been developed. The 3D casing of the system has been designed and printed with a 3D printer. The design of the casing has a direct impact on sensor accuracy. The casing was designed to house all elements of the sensing system in a compact way: microcontroller, battery, conditioning circuit, Bluetooth module and battery charger. The sensing system was validated with eight subjects using a metronome as a reference. The sensor was worn in the chest at the level of the diaphragm through a chest strap. Six different values of breaths per minute (BPM) were assessed: 10, 12.5, 15, 17.5, 20 and 22.5 BPM. Subjects were requested to perform ten breaths for each reference value at the rhythm of the metronome. This dataset includes the raw voltage signals recorded during the validation experiments. It is organized in eight folders (1 per subject). Each folder contains six different text files (1 per reference value). In total, this dataset comprises 48 files of breathing signals.