The following provides an example of sample Shimmer Data collected internally on both Shimmer3 motion (IMU) and biophsical (ECG,EMG, GSR, Respiration, Optical Pulse PPG) units. MATLAB was used to plot the raw data collected.
The Shimmer3 IMU unit was initially placed on a desk and then lifted off the desk and rotated about each of its three axes. In between each axis rotation, the Shimmer was placed flat on a desk to demonstrate a stationary period of the device.
The kinematic data was passed through the 9DoF-to-IMU algorithm, which can be found in our Consensys software application. This algorithm generated 9DoF Quaternion data from the calibrated Low-Noise Accelerometer, Gyroscope and Magnetometer data.
| Source | STMicro LSM303DLHC |
| Range | +/- 2g (available ranges:+/- 2g, +/-4g, +/-8g, +/-16g) |
| Channels | 3 Channels (x, y, z) |
| Sampling Rate | 512Hz |
| Format | 16 bits, signed |
| Units | ms-2 |
| Filtering | None |
The Shimmer3 IMU unit was initially placed on a desk and then lifted off the desk and rotated about each of its three axes. In between each axis rotation, the Shimmer was placed flat on a desk to demonstrate a stationary period of the device.
The kinematic data was passed through the 9DoF-to-IMU algorithm, which can be found in our Consensys software application. This algorithm generated 9DoF Quaternion data from the calibrated Low-Noise Accelerometer, Gyroscope and Magnetometer data.
| Source | Invensense MPU9150 |
| Range | +/- 500 deg/s (available ranges: +/- 250 deg/s, +/- 500 deg/s, +/- 1000 deg/s, +/- 2000 deg/s) |
| Channels | 3 Channels (x, y, z) |
| Sampling Rate | 512Hz |
| Format | 16 bits, signed |
| Units | Deg/s |
| Filtering | None |
The Shimmer3 IMU unit was initially placed on a desk and then lifted off the desk and rotated about each of its three axes. In between each axis rotation, the Shimmer was placed flat on a desk to demonstrate a stationary period of the device.
The kinematic data was passed through the 9DoF-to-IMU algorithm, which can be found in our Consensys software application. This algorithm generated 9DoF Quaternion data from the calibrated Low-Noise Accelerometer, Gyroscope and Magnetometer data.
| Source | STMicro LSM303DLHC |
| Range | +/- 1.9Ga (available ranges: +/- 1.3 Ga, +/- 1.9, +/- 2.5Ga, +/- 4.0Ga, +/- 4.7Ga, +/- 5.6Ga, +/- 5.6Ga, +/- 8.1Ga) |
| Channels | 3 Channels (x, y, z) |
| Sampling Rate | 512Hz |
| Format | 16 bits, signed |
| Units | Local flux |
| Filtering | None |
The Shimmer3 ECG unit was placed on a desk and connected to the HE Instruments TechPatientCardio signal generator which simulated 4-lead ECG (LA-RA, LL-RA, LL-LA and Vx-RL).Magnetometer
| Source | ADS1292R |
| Channels | 4 Channels (LA-RA, LL-RA, LL-LA and Vx-RL) |
| Sampling Rate | 1024 Hz |
| Format | 24 bits, signed |
| Units | mV |
| Filtering | None |
Using the Shimmer3 EMG unit a subject connected two EMG electrodes to the forearm and also to the biceps of their right arm while performing a number of sustained muscle contractions over a two minute recording period. A reference electrode was connected to a boney obtrusion on the wrist.
| Source | ADS1292R (EMG mode) |
| Channels | 2 Channels (EMG1, EMG2) |
| Sampling Rate | 512 zH |
| Format | 16 bits, signed |
| Units | mV |
| Filtering | None |
Respiration is determined by impedance pneumography which measures the impedance changes across the lungs during the inhalation/exhalation cycle. Note: Using the Shimmer3 ECG in respiration mode introduces some interference on all of the ECG channels.
The Shimmer device was placed on a desk and connected to a subject using the following electrode placement:
- White: Right Arm (RA) on the midaxillary line of Vertebrate 6 (V6)
- Black: Left Arm (LA) on the midaxillary line of Vertebrate 6 (V6)
- Green: Right Leg Driver (RLD) on the right hip bone.
- Red: Left Leg (LL) above the left hip bone.
- Brown: Vx (where x is 1, 2, 3, 4, 5, or 6) left of the xiphoid process.
While at rest the subject breathed normally for a two minute period and at the end of each minute performed three pronounced inhalations and exhalations.
| Source | ADS1292R (Respiration demodulation) |
| Channels | 1 Channels (PPG) |
| Sampling Rate | 512 Hz |
| Format | 24 bits, signed |
| Units | mV |
| Filtering | None |
Using the Shimmer3 GSR+ unit a subject connected the GSR electrodes to the index and middle finger on the left hand and the PPG probe onto the left ear lobe.
During the first minute of data recording, the subject was sitting down and during the second minute, the subject was walking.
The PPG data was passed through the PPG-to-HR algorithm, which can be found in our Consensys software application. This algorithm converts the PPG signal to a heart rate (bpm). The heart rate has a value of -1 for the first few samples as the algorithm enters a training period.
| Source | Shimmer circuit design |
| Channels | 1 Channel (GSR) |
| Sampling Rate | 128 Hz |
| Format | 16 bits, signed |
| Units | kOhms |
| Filtering | None |
Using the Shimmer3 GSR+ unit a subject connected the GSR electrodes to the index and middle finger on the left hand and the PPG probe onto the left ear lobe.
During the first minute of data recording, the subject was sitting down and during the second minute, the subject was walking.
The PPG data was passed through the PPG-to-HR algorithm, which can be found in our Consensys software application. This algorithm converts the PPG signal to a heart rate (bpm). The heart rate has a value of -1 for the first few samples as the algorithm enters a training period.
| Source | Shimmer circuit design |
| Channels | 1 Channel (PPG) |
| Sampling Rate | 128 Hz |
| Format | 16 bits, signed |
| Units | mV |
| Filtering | None |
Not getting what you are looking for?
