Under the hood
Quality Sensors
Each left and right SCIENCE Sensor Insole contains pressure sensors and a gyroscope sensor. More detailed information can be found in the specifications section below.
16 Pressure Sensors
Sensor insole outline and sensor positions are given in a common coordinate system. The orientation of the coordinate systems is different for left and right sides.
6-Axis Intertial Measurement Unit
Position of the IMU sensor is the origin of the coordinate system. Orientation of coordinate system is different for left and right sides. The sensor data contains 3 dimensions in space for acceleration and angular rate data.
Sizes
Download documentation for detailed dimensions including print-outs to check the size fit.
Sensors
Pressure Sensors
Quantity
16 per side
Type
capacitive, proprietary Moticon technology
Axis
Z, plantar
Range
0…50 N/cm²
Resolution
0.25 N/cm²
Hysteresis
≤ 1 %
Coverage
62.5 % (Size 1) … 67.4 % (Size 9)
Calibration
in-production, lifetime
Inertial Measurement Unit (IMU)
Quantity
1 per side
Type
MEMS LSM6DSL, ST Microelectronics
Acceleration Axis
X / Y / Z
Acceleration Range
± 16 g
Acceleration Resolution
0.488 mg/LSB, 16 bit
Angular Rate Axis
ΩX / ΩY / ΩZ
Angular Rate Range
± 2000 dps
Angular Rate Resolution
70 mdsp/LSB, 16 bit
Hysteresis
n.a.
Calibration
in-factory, lifetime
Data Acquisition
Sample Rates
Rates
10 Hz, 25 Hz, 50 Hz, 100 Hz (full sensor setup)
Timer drift
≤ 1 %
Memory
Quantity
1 pers side
Type
FLASH, non-extendable
Size
16 MB
Recording Time
Full sensor setup, 10 Hz
05:35:32 [hh:mm:ss]
Full sensor setup, 100 Hz
00:33:33 [hh:mm:ss]
Monitoring setup, 10 Hz
16:07:54 [hh:mm:ss]
Note
For further recording time information consider the detailed product documentation available for download on our Support sites.
Data Channels
Quantity
23 primary data channels, 2 computed data channels
Primary Channels
TS [1]
time stamp
in ms
PR [1…16]
pressure channels
in N/cm²
ACC [X,Y,Z]
acceleration channels
in g
ANG [ΩX,ΩY,ΩZ]
angular rate channels
in dps
Computed Channels
COP [X, Y]
center of pressure
in -0.5…+0.5 (related to sensor insole length/width)
TF [Z]
total force
in N
Standard Channel Setups
Full Setup
TS, PR, ACC, ANG, COP, TF
Standard Setup
TS, PR, ACC, COP, TF
Monitoring Setup
TS, ACC [Z], COP, TF
Note
Any combination of channels can be configured in the SCIENCE Mobile App. The standard setups are pre-configured channels setups for user convenience.
Operation Modes
Standard Modes
Preview
Transmits fixed basic sensor data wirelessly
For activity checks and live showcasing in the Moticon SCIENCE Mobile App
Live
Transmits selected sensor data channels wirelessly to endpoint (computer/cloud)
Direct data transmission to store on endpoint
Record
On-board sensor data recording
For standalone data acquisition without need for phone/ computer/ cloud
Note
The operation modes Live and Record can be software-selected in the Moticon SCIENCE Mobile App. The Preview mode is always on when connected to a phone. The Transmit mode is activated automatically when data is transmitted.
Intelligence Modes
Smart Recording
Activity triggered recording mode. Recording is only on when users are active. Internal firmware controls start/stop of recording automatically. No phone is required.
For longterm gait monitoring
Smart Sleep
Automatic shut down into power safe mode when sensor insole is not in use. No hardware switches are used.
No user interaction for turning on/off required
Note
Smart Recording is currently undergoing an R&D update from previous sensor insole generation. Estimated availability is 10/2019.
System Functions
Firmware Update
Firmware of the sensor insoles can be updated wirelessly using the Moticon SCIENCE Mobile App.
File Management
Firmware runs a file management system on the on-board memory of the sensor insole. Measurements can be selected, deleted and transmitted individually using the Moticon SCIENCE Mobile App.
System Status
The firmware continuously checks the system status and transmits status information. Status information includes:
1. OK/NOK pressure sensors 1-16
2. Restarts
3. Active time
4. Miscelaneous (firmware version, serial number, size, side)
Battery Status
The firmware detecs the battery charge status of the inserted coin cell batteries. The charge status is transmitted to the Moticon SCIENCE Mobile App.
Wireless
Wireless Standard
Bluetooth Low Energy 5.0
Version refers to integrated wireless chip. BLE connection to smartphones can be established from version 5.0.
Profile
Proprietary
No standard BLE profile is used.
Wireless Range
≥ 5.0 m
Depends on environmental conditions and the presence of other active
2.4 GHz wireless devices.
Bandwidth
54 kB/s
Typical data transmission bandwidth.
Transmission Speed
~ 19 s/MB
Equals approx. 04:27 min. transmission time for complete memory transmission.
Sizes
Size 1
EU 32/33
US 1/2
Size 2
EU 34/35
US 2.5/3
Size 3
EU 36/37
US 3.5/4.5
Size 4
EU 38/39
US 5/6
Size 5
EU 40/41
US 6.5/7.5
Size 6
EU 42/43
US 8/9
Size 7
EU 44/45
US 9.5/10.5
Size 8
EU 46/47
US 11/12
Size 9
EU 48/49
US 12.5/13.5
Power Supply
Power Supply
3.7 V ±0.4 V
Power Consumption
n.d.
Battery Type
1 coin cell rechargeable
Battery Form Factor
2032
Battery Technology
Lithium Ion
Caution
Nominal operating voltage must be 3.7 V. The use of lower voltage, non-rechargeable coin cell batteries type CR2032 or rechargeable coin cell batteries type ML2032 will cause malfunction.
In the Box
Moticon SCIENCE Sensor Insole
1 pair
Battery Lid
2 pcs.