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empatica_e4 package from ros2-foxy-wearable-biosensors repo

emotiv_insight empatica_e4 polar_h10 shimmer3_gsr_unit vernier_respiration_belt

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Package Summary

Tags No category tags.
Version 0.0.1
License Apache License 2.0
Build type AMENT_PYTHON
Use RECOMMENDED

Repository Summary

Checkout URI https://github.com/smartlab-purdue/ros2-foxy-wearable-biosensors.git
VCS Type git
VCS Version master
Last Updated 2022-06-08
Dev Status UNMAINTAINED
CI status No Continuous Integration
Released UNRELEASED
Tags No category tags.
Contributing Help Wanted (0)
Good First Issues (0)
Pull Requests to Review (0)

Package Description

it is to read the biosignals of the empatica e4.

Additional Links

No additional links.

Maintainers

  • Wonse Jo

Authors

No additional authors.
src/empatica_e4/README.md

Empatica E4 Wristband Node

The Empatica E4 is a wristband with an array of biosensors for physiological monitoring: Electrodermal Activity (EDA), Blood Volume Pulse (BVP), Inter-Beat-Interval (IBI), Heart Rate (HR), and Skin Temperature (ST), and behavioral monitoring: 3-axis accelerometer [14]. However, there are a limitation to directly read biosensor data on the Linux environment since the Empatica does not officially provides SDKs and libraries for Linux operating system. Thus, an additional Window machine and Bluetooth dongle (e.g., Bluegiga Bluetooth Smart Dongle) are required in the current version of the biosensor package in order to stream biosensor data using LSL as mentioned on the Empatica E4 website [15]. The main Linux machine having the ROS 2 system converts the LSL data into ROS 2 topics in real-time.

Requirments

1) Additional window machine to stream data via E4 stremaing server. 2) Install a python library: ```$ pip install open-e4-client



## Node Informations
1) Node name: empatica_e4_node
2) Parameters: 
  * _Sensor_Enable_ : a boolean data type (i.e., True or False).; default= _True_
  * _Chunk_Enable_ : a boolean data type (i.e., True or False).; default= _True_
  * _Chunk_Length_ : a integer data type to adjust data length per topic.; default= _128_
  * _DeviceID_ : a string data type to connect own device via ble/; for example, _'CC34CD'_
  * _E4_Host_IP_ : a string data type to connect Empatica E4 streaming server.; for example, _'XXX.XXX.XXX.XXX'_
  * _E4_Host_Port_ : a integer data type to adjust data length per topic.; default= _28000_

## Topic Information
### For raw data
1) _biosensors/empatica_e4/bvp_ : 
* type: standard_msg/Float32
* size: 1-by-1 
* detail:the Blood  Volume  Pulse (BVP) signal. 
2) _iosensors/empatica_e4/gsr_ :
* type: standard_msg/Float32
* size: 1-by-1 
* detail: the Electrodermal  Activity  (EDA) signal. 
3) _biosensors/empatica_e4/hr_ : 
* type: standard_msg/Float32
* size: 1-by-1 
* detail: the Heart Rate (HR) signal. 
4) _biosensors/empatica_e4/st_ : 
* type: standard_msg/Float32
* size: 1-by-1 
* detail: Skin Temperature (ST) signal
5) _biosensors/empatica_e4/ibi_ : 
* type: standard_msg/Float32
* size: 1-by-1 
* detail:  the Inter-Beat-Interval (IBI) signal. 
6) _biosensors/empatica_e4/acc_ : 
* type: standard_msg/Float32MultiArray
* size: 1-by-1 
* detail: the accelerometer (ACC) data.
7) _biosensors/empatica_e4/bat_ : 
* type: standard_msg/Float32
* size: 1-by-1 
* detail: the Electrodermal  Activity  (EDA) signal.
8) _biosensors/empatica_e4/tag_ : 
* type: standard_msg/Empty
* size: 1-by-1 
* detail: the Electrodermal  Activity  (EDA) signal. 

### Chunk data
1) _biosensors/empatica_e4/bvp_chunk_ : 
* type: standard_msg/Float32MultiArray
* size: 1-by-128 float array
* detail: the Blood  Volume  Pulse (BVP) signals.
2) _biosensors/empatica_e4/gsr_chunk :
* type: standard_msg/Float32MultiArray
* size: 1-by-128 float array
* detail: the Electrodermal  Activity  (EDA) signals.
3) _biosensors/empatica_e4/st_chunk : 
* type: standard_msg/Float32MultiArray
* size: 1-by-7 float array
* detail: Skin Temperature (ST) signal.

## Test the Node using Launch file


```bash
$ros2 launch empatica_e4 ros2-empatica_E4.launch.py

Example of Published Topic Data

CHANGELOG
No CHANGELOG found.

Wiki Tutorials

This package does not provide any links to tutorials in it's rosindex metadata. You can check on the ROS Wiki Tutorials page for the package.

Package Dependencies

Deps Name
ament_copyright
ament_flake8
ament_pep257

System Dependencies

Name
python3-pytest

Dependant Packages

No known dependants.

Launch files

No launch files found

Messages

No message files found.

Services

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Plugins

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Recent questions tagged empatica_e4 at Robotics Stack Exchange

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