Hand-BCG & SCG signals dataset

General description

This repository contains Ballistocardiogram signals collected from multiple users while they were holding a mobile phone in hand and Seismocardiogram signals collected with the phone placed on their chest.

It consists of 3 different datasets made up of multiple recordings from a total of 272 different users. The main characteristics of these datasets are given below.

+---------------+-------------+-------------+-----------------+------------------------------+-----------------------+--------------------+------------+-----------+
|                    | Loc.        | # users   | Age range  | # sessions per user | session length | Phone            | Acc. Fs | Gyr. Fs |
+---------------+-------------+-------------+-----------------+------------------------------+-----------------------+--------------------+------------+-----------+
| Dataset A | Hand      | 112         | 20-60          | 10                               | 30s                     | Samsung S8 | 100 Hz | 500 Hz |
+---------------+-------------+-------------+-----------------+------------------------------+-----------------------+--------------------+------------+-----------+
| Dataset B | Hand      | 105         | 20-32          | 1                                 | 30s                     | Google Pixel  | 50 Hz    | 400 Hz |
+---------------+-------------+-------------+-----------------+------------------------------+-----------------------+--------------------+------------+-----------+
| Dataset C | Chest     | 55           | 19-52          | 4                                 | 30s                     | Google Pixel  | 50 Hz    | 400 Hz |
+---------------+-------------+-------------+-----------------+------------------------------+-----------------------+--------------------+------------+-----------+

Content of each dataset

Each dataset is made up of multiple files, with each file corresponding to a given measurement session.

The name of a given file indicates some metadata about the measurement session itselft. It is assigned based on the following template: <UserId>-<Gender>-<Age>yrs-<SignalLength>_<Year>-<Month>-<Day>_<Hour>-<Minute>-<Seconds>.csv

The content of the file itself corresponds to the sensor readings collected during the measurement session. It is a collection of timestamped sensor values, reported in a comma-separated format. The first column represent the timestamp of the sensor event (in nanoseconds), the second one the type of the considered sensor and the 3 following ones the actual values along the different axis. Please refer to the official Android SensorEvent documentation for more details.