Cleveland Medical Devices Inc. 0103 ユーザーズマニュアル
ParkinSense User’s Guide v. 1.0
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Figure 6. The ParkinSense wrist module includes both a mini USB and lemo connector.
Electromyography – The user unit provides a lemo connector input for two channels of
electromyography (EMG). The electromyography data transmitted over the wireless link and
saved in memory is processed data. The user unit samples EMG at 2 KHz. However, the root
mean square (RMS) value of the EMG signal is processed every 7.8 milliseconds and stored to
memory or sent over the wireless link. This provides data synchronization between the EMG and
the mechanical sensors which are sampled at 128Hz (or every 7.8 milliseconds). (Table 2)
Gyroscopes – The finger worn sensor module includes three orthogonally positioned gyroscopes.
This provides three axes of angular rotation data. (Table 2)
Accelerometers - The finger worn sensor module includes three orthogonally positioned
accelerometers. This provides three axes of linear acceleration data. (Table 2)
Sensors
ParkinSense integrates motion sensing and EMG in a single device. Eight channels of data are
providing including three orthogonal accelerometers, three orthogonal gyroscopes, and two
channels of differential EMG. The exact sensors specifications are shown below (Table 3).
Table 3.
ParkinSense system sensor specifications.
Angular Rate
Acceleration
Electromyography
Sensor Type
MEMS Gyroscopes MEMS Accelerometers Snap electrodes
Number of Channels
3 Orthogonal
Channels
3 Orthogonal
Channels
2 differential channels
Input Range
±1200 deg/sec
±5 g
±5 mV
Min. Freq (3dB)
0Hz
0 Hz
30 Hz
Max. Freq (3dB)
15 Hz
15 Hz
1024 Hz
Input Noise
<1.6 deg/sec RMS
<2 mg RMS
<15 µV p-p
CMRR
N/A
N/A
>60 dB
A/D resolution
12-bit
12-bit
12-bit
Sampling Rates
128 sps
128 sps
2048 sps per channel
DC offset rejection
N/A
N/A
300 mV
Input Impedance
N/A
N/A
>20 Mohm
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