C-ETD Product information
Contents
1. of the user The facemasks can be delivered pre formed and unformed The pre formed mask can be used in itially For better comfort and minimal slippage effects it will be necessary for the user to form his her own masks The facemasks are made of so called thermoplastic This material becomes very flexible at temperatures above 65 70 Celsius 150 160 Fahrenheit In principle the facemasks can be fitted to any facial form Dichroic mirrors The IR mirrors positioned in front of the right and left eye are essential for the correct functioning of the Eye Tracker They are made of quartz glass Each mirror is delivered with two brackets which are already attached to the mirror by fixing screws Chronos Inertial Tracking System C ITS The mechanical interface permits mounting on the head unit of the Chronos Eye Tracking Device In this case the analog output signals would normally be connected to the ADC interface of the C ETD for synchronous recording of eye and head movements The Chronos Vision Inertial Head Tracker consists of two triaxial sensor assemblies one for measu rement of linear acceleration along each of the three orthogonal axes and one for measurement of angular rate around each of the three orthogonal axes The output signals of the sensor assemblies 3 plus 3 are connected to a signal conditioning system with buffer output amplifiers The C ITS can be used as a stand alone six degree of freedom sensor device and c2. of the resultant data set ASCII format Archiving selection and visualisation Storage of selected setups as parameter files Digital image processing and full storage of eye sequences Binocular and or monocular left right for all frame rates 50 100 200 and 400 Hz Online 2D 2 ms delay 11 bit output range Online storage of complete image sequences Offline 3D evaluation software Selectable algorithms for 2D pupil tracking Corneal reflection tracking Iris segment tracking up to 36 selectable Iris segments Comparision of torsional results of different recordings possible 3D eye position output in raw or Fick coordinates 13 bit output range Support for Matlab interfaces for integrating testing own algorithms Horizontal and vertical between 30 and 30 Torsional between 25 and 25 lt 0 05 for all three components lt 0 02 RMS Eye blinks easily distinguished Horizontal 55 74 mm Vertical 20 mm Input camera connector Record Trigger in TTL level Start synchronous recording with help of external trigger Output Sync clocked to sampling rate Start external experiments simulations by synchronous output sync DD Digital to Digital output Standard Video Monitor Output PAL only for principal inspection of eye adjustment IR LEDs 940 nm Irradiance lt 7 5 mW cm within recommended safety levels EU EN 60825 1 8 79 mW cm USA ACGIH 10 0 mW cm IBM compatible PC Supply Volt
3. EI CHRONOS VISION Your partner for vision based decisions EE f ba i 7 o P Chronos Eye Tracking Device X CE and FDA approved as medical device Y User selectable sampling rate 50 100 200 400 Hz Y NASA qualified for use on humans during spaceflight X Ergonomic design of head unit for comfort and minimal slippage MADE IN GERMANY Ergonomic Design Drawing from our previous experience with VOG systems and consultation with experts in the fields of visual vestibular research optometric and neurological examination The inertial load on the head has been kept to a minimum by selection of lightweight components and uniform distribution on the head frame 40 60 vertical Technology The digital eye tracking cameras designed around CMOS image sensors are interfaced to a dedicated processor board in the host PC via bi directional high speed digital transmission links 400 Mb s This PCI plug in board carries the front end processing architecture consisting of digital signal processors DSP and programmable logic devices FPGA for binocular online image and signal acquisition For the eye tracking task a substantial data reduction is Software Circle and ellipse fitting algorithms for pupil tracking are included together with a new implementation of the polar correlation algorithm The interactive software provides the user with a comprehensive set of options via pull down
4. age AC 115 V 230 V Auto Full Range Power consumption 100 VA Product Configurations Head Unit System Unit Software lah INL on OD HERRRRRRRENRRN Documentation Product Version Monocular Binocular Art No Art No 5220011 5220012 Adjustable headband and visor Art No 5220010 Art No 5220013 Camera assembly with optics and infrared 1 2 illumination source left or right Dichroic mirror glass 1 2 Cable set for connection to System Unit upto8m Thermoplastic facemasks 2 x unformed 1 x pre formed Head unit stowage box e State of the art IBM compatible PC with power supply DIN EN 60950 100 240 V 8 A 50 60 Hz Auto Full Range CPU Intel Duo Core 3 GHz 4 GB RAM Hard Disc Drives HDD o System HDD minimum 320 GB Exchangeable HDD minimum 500 GB Exchangeable HDD minimum 200 GB USB compliant CD DVD RW Drive Standard System Unit accessories i e CD OS MS Windows power cable e keyboard and mouse PCI Eye Tracker Boards half length installed in the PC l e Sync Out Board Pre installed standard software MS Windows XP Professional English e Adobe Acrobat Reader 8 0 or higher English Pre installed Chronos Eye Tracker application software Online recording SW ETD e Offline analysis SW Iris horizontal and vertical eye movement e torsional e
5. an be mounted to an arbitrary object whose movement is to be measured Exchangeable HDD according to EN 60950 On request Please contact us and tell us which capacity you need Art No 5220002 Art No 5220003 Art No 5220004 Art No 5220006 Art No 5220007 Art No 5220008 Art No 5220009 CHRONOS VISION GmbH Wiesenweg 9 12247 Berlin Tel 49 0 30 3198060 00 Fax 49 0 30 3198060 01 info chronos vision de www chronos vision de certified ISO 9001 for you Cert MADE IN GERMANY
6. menus or pre stored parameter files Right Eye Playback from File s C session_001_ etd Record Trigger Recording to File s Set Fil C session_001_ etd e eile Calibrate gt E I STANDBY Left board up and running ight board up and running RECORD FILE OVERWRITE WARNING File exists and will be overwritten when entering record model HH MM Eye Tracker graphic user interface showing eye images and 2D trace of calculated eye position Field of view of 90 horizontal and and human factors studies a number of innovative features have been included in the Head Unit design e MOE i Cc 4 e e a e a v Pe 3 s n pen Ben j s m a 7 1 IN gt j j Device slippage is reduced by the use of custom formed facemasks performed by the sensor and the front end processing Thus only preselected data are transferred from the image sensor through to the host PC where the final algorithms and data storage are implemented This eliminates the bottleneck caused by standard frame by frame image acquisition and thus facilitates considerably higher image sampling rates HIGHLIGHTS Selectable acquisition modes sampling rate monocular binocular 2D 3D tracking Sampling rate 50 100 200 400 Hz Online offline calculation of 2D 3D eye coordinates Internal external trigger for record start stop Selection of measurement algorithms Online storage
7. ye movement only 3D Version Audio Video synchronization SW C ETD User Manual Options 16 channel ADC acquisition board The ADC board is an analog to digital converter of the C ETD System If an ADC board is installed in the system the ADC data can be stored in an ASCII file It can be delivered as 16 Ch or 31 Ch board All ADC inputs are optically isolated from the PC circuitry One 37 pin sub D female connector is edge mounted on the ADC Interface board This permits connection for channels 1 to 16 plus sync and trigger ADC extension for 31 channels A second 37 pole sub D connector is provided for channels 17 31 Channel 32 is reserved as a zero reference voltage for calibration purposes The second 37 pole sub D connector is mounted on an additional edge plate and is connected by flatribbon cable to the ADC Interface board 4 channel DAC board The DAC digital to analog converter board provides analog output signals for the horizontal and vertical eye positions of each eye in total 4 channels The output signals are accessed via the 9 pin sub D connector on the slot bracket The DAC board should be inserted into a PCI slot adjacent to the PCI processor boards This option is not available for monocular systems The output voltage level is 2 5 V full scale Accessories and spares ADC board required Additional facemask The facemask is an extension of the C ETD system in order to prevent the slippage on the head
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