Unique Solutions for Clinical And Research Applications - Biometrics Ltd

DataLOG Click to enlarge  
  • Latest Generation Fully Programmable Portable Data Collection
  • Sampling Rates up to 20 KHz / channel (160 Khz total per DataLOG)
  • Dynamic Link Library (dll) for Real Time Data Transfer to Other Applications
  • Real Time Data Display and Analysis
  • Auto Data Backup using Micro SD card
  • Readily Synchronizes with 3rd party Systems
  • Up to 32 Independent Programmable channels
  • State of the art Wireless Bluetooth® Technology
  • Full Colour Graphics LCD

Bluetooth The NEW DataLOG MWX8 is the latest in data acquisition technology developed to meet the needs of researchers for portable data collection and ambulatory monitoring in human performance, sports science,Click to enlarge medical research, industrial ergonomics, gait laboratories, & educational settings. The small, lightweight, battery operated unit incorporates a colour graphics LCD, joystick, micro SD card interface, and a real-time wireless Bluetooth link to a PC.

Weighing 60% less than previous devices, at 129g, the DataLOG MWX8 can be worn on the arm or leg in addition to the traditional belt/waist placement.  This miniaturized technology is by far the most powerful portable data acquisition device available. During all stages of the design and development process, attention has been given to the Bluetooth® Wireless link, providing real time data transfer and display.  In addition, the data is automatically backed up to the Micro SD card providing complete peace of mind.

DataLOG is a general purpose, programmable Data Acquisition Unit allowing the user to collect both analogue and digital data from a wide range of sensors. All Biometrics Ltd sensors readily connect to the DataLOG including:-

  • Click to enlargeSingle and Twin Axis Goniometers
  • Torsiometers
  • Surface EMG
  • Accelerometers
  • Contact Switches & Event Markers
  • ForcePlates
  • MyoMeter
  • Hand Dynamometers
  • Pinchmeters

Data recording options include:-

The front end amplifier configuration and sensor power supply are programmable enabling the researcher to also connect a wide range of general or custom transducers including:-

  • General Load cells
  • Strain gauge devices
  • Single ended voltage inputs
  • Differential voltage inputs
  • Temperature probes
  • Flow meters
  • Microphones

The DataLOG is configured from the host PC using the Bluetooth® wireless link, including simple adjustments per channel for gain, power supply, sampling rate and datum settings. When Biometrics’ sensors are connected these parameters are automatically set using a drop down menu.

After configuring from the PC, many operations are carried out using the DataLOG LCD & menu system. The screens are selected by scrolling left or right using the navigation joystick:

  • Main displaydisplay and analyse real time within the PC using Bluetooth®
  • store on the PC and auto-back-up to the  Micro SD card
  • store data to the Micro SD card for later download
  • transfer data real time using the Dynamic Link Library into 3rd party programs using tools such as MS Visual Basic or Visual C++
  • store as ASCII or as a standard Sound Wave file for passing into other applications such as Microsoft Excel or Cool Edit
  • display real time on the DataLOG Graphics Display in engineering units, or as a bar chart, or as adjustable audible alarms
  • manual start with pre-set automatic stop
  • remote record start/stop by TTL signal sent from other instrumentation to the DataLOG
  • start/stop other instrumentation by TTL signal sent from the DataLOG

DataLOG Accessories

EVENT MARKERS

These useful accessories allow time marks to be registered in the recorded data. The events are marked for the duration of the time the switch is pressed:
Event Markers

  • IS3 - A 1.8 meter cable with a suitable connector at one end to connect to the DataLOG, and a hand held switch at the other
  • IS3LED – same as above with LED in the hand held switch which illuminates when the switch is pressed for visualization on video recordings
  • IS3Pedal - A 2 meter cable with a suitable connector at one end to connect to the DataLOG, and a foot switch at the other. This allows events to be marked while leaving both hands free


SYNCHRONIZATION CABLE SYNC5

For remote start / stop by a TTL signal sent to 3rd party hardware systems to synchronise data collection from both sources (ie. DataLOG is the master). The SYNC5 is a 3 metre cable with a connector at one end to connect to the digital input socket of the DataLOG and 2 flying wires at the other end. Alternatively, this cable may be specified with any connector of choice.

SYNCHRONIZATION CABLE SYNC1

For remote start / stop by a TTL signal {i.e. the ability to switch a signal line from logic 1 (+5V) to logic 0 (+0)} sent from other hardware systems to synchronise data collection from multiple sources (ie. DataLOG is a slave). The SYNC1 is a 3 metre cable with a connector at one end to connect to the digital input socket of the DataLOG and 2 flying wires at the other end. Alternatively, this cable may be specified with any connector of choice.

SYNCHRONIZATION CABLE SYNC1BNC

A synchronisation cable with a BNC connector fitted for interfacing to certain 3rd party systems such as Qualisys or Vicon.  Connector chassis is wired as common or ground.  NOTE:-  Please contact Biometrics Ltd or the 3rd party equipment manufacturer for specific instructions before this cable is used

OPTICAL SYNCHRONIZATION using Start Switch IS2-LED

A 1.8 metre cable with a suitable connector at one end to temporarily connect to the DataLOG, and a hand held switch with LED at the other.  Pressing the switch will activate the start recording function and illuminate a LED which may be used for precise synchronization with all camera based motion analysis systems.

CONTACT SWITCH ASSEMBLY FS4

An assembly of 4 Force Sensing Resistor Sensors (FSRs) each on 1.2 meters of cable which are readily connected to the DataLOG via one connector for use as switches to indicate contact e.g. heel and toe strike or palmer contact.  The sensors are thin and robust and are usually placed inside the subject’s shoe or glove for convenience.

Specifications

Model MWX8
Dimensions 104 x 62 x 22 mm
Mass 129 g
Battery Type 2 x Alkaline AA, LR6, MN1500
Battery Life 5-11 hours nominal depending on sensor type & quantity
Microprocessor controlled programmable gain amplifiers
Analog channels                               8
Digital channels                               4
Memory Internal 2GB Micro SD card
Bluetooth® Adaptor Microsoft Bluetooth® stack compatible
Front end ADC 14 bit giving +/- 4000 counts resolution
General analog channels may be single ended or differential input depending on front end plug wiring configuration
Number of goniometer channels 0 to 8, dependent on number of general analog channels (user select)
Number of general analog channels 0 to 8, dependent on number of goniometer channels (user select)

General analog channels may be single ended or differential dependent on front end plug wiring configuration
Hardware Gain range options                     Max Input                    Resolution
                    ± 1 mV                         0.244 µV
                    ± 3 mV                         0.732 µV
                    ± 10 mV                       2.44 µV
                    ± 30 mV                       7.32 µV
                    ± 100 mV                     24.4 µV
                    ± 300mV                      73.2 µV
                    ± 1V                             0.244 mV
                    ± 3V                             0.732 mV
                    ± 6V                             1.464 mV
Recording modes record to Bluetooth® & Micro SD card
record to Micro SD card only
record to Bluetooth® only
Range of Sampling frequency per analog channel 1, 2, 5, 10, 20, 50, 100, 200, 500, 1000, 1250, 2000, 2500, 5000, 10000, 20000 Hz
(note: Bluetooth is used for monitoring only at the higher sampling rates)
Bandwidth                     Input Range                Bandwidth
                    1mV and 3mV              DC to 1KHz (+0 dB / -3dB)
                    10mV to 3V                  DC to 10KHz (+0 dB / -3dB)
an automatic anti-alias digital filter: approximately -3dB at 0.45 x sampling rate and a maximum attenuation of -13dB above 0.8 x sampling rate
Power Supply per channel adjustable 0 to 4.6 Vdc
Current Supply per channel ≤ 20 mA
Accuracy better than +/- 0.5% full scale
Maximum common mode 1.2 V
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