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Содержание Geodesic Photogrammetry System

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Страница 2: ...trical Geodesics Inc EGI 500 E 4th Avenue Suite 200 Eugene OR 97401 USA 1 541 687 7962 tel 1 541 687 7963 fax www egi com supportteam egi com orderdesk egi com European Union EU Authorized Representat...

Страница 3: ...GPS 3 User Manual 8103002 56 2018 07 17 3 Geodesic Photogrammetry System GPS Sensor Localization System version 3 1 2 User Manual...

Страница 4: ...018 07 17 Key changes in this revision Section 1 1 Revised Intended Use Section 3 2 Added System Requirement for Silver Dot GSNs Section 4 1 1 Added information on sensor label types Section 4 3 Updat...

Страница 5: ...2 1 1 Dome 25 2 1 2 Gantry 27 2 1 3 Calibration Object 28 2 1 4 Computer and Monitor 29 2 1 5 Isolation Transformer 29 2 2 Connections 30 2 3 Raising and Lowering the Dome 32 2 4 Moving the GPS 33 2...

Страница 6: ...set Solution 57 5 1 3 File GeoScan Batch Converter 57 5 1 4 Settings Confirm Identification 59 5 1 5 Calibration Open Calibration 59 5 2 Solving Sensor Locations 59 5 2 1 Load File 59 5 2 2 Identify S...

Страница 7: ...aining 11 cameras a counterbalanced steel gantry the GPS Acquisition image capturing software the GPS Solver sensor modeling software and a calibration object Different from stylus based sensor regist...

Страница 8: ...you have additional questions or wish retraining contact EGI Technical Support Table P 1 Typographic conventions Italics are used for definitions or newly introduced terms Boldface italics are used fo...

Страница 9: ...nt issues do the following before contacting EGI Isolate the problem Try to repeat and define the problem Document the problem Carefully record the sequential details of the problem Report the defined...

Страница 10: ...10 GPS 3 User Manual 8103002 56 2018 07 17...

Страница 11: ...ll system components must be installed and configured by an EGI support or authorized engineer Deviating from the supported configuration or running the system with non EGI approved components attache...

Страница 12: ...ctromagnetic interference Provides reliable data in electrically noisy environments Uses a triangulation algorithm to solve for locations Converts GeoScan txt files from the GeoScan handheld sensor di...

Страница 13: ...Shipping altitude 11 500 m 38 000 ft maximum Operating altitude 3 000 m 10 000 ft maximum 1 3 2 Site Requirements Table 1 2 Site requirements for the location and use of the GPS Location For indoor us...

Страница 14: ...cations including CE declarations go to www egi com or contact EGI Technical Support Table P 1 This medical equipment is certified to the following CAN CSA C22 2 No 60601 1 08 Medical Electrical Equip...

Страница 15: ...uipment Particular requirements for safety Particular requirements for the safety of electroencephalographs This medical equipment is classified as follows Applied Part Type BF 1 3 6 Rating Table 1 4...

Страница 16: ...following measures Reorient or relocate the receiving device Increase the separation between the equipment Connect the equipment to an outlet on a different circuit than the one used by the other dev...

Страница 17: ...GPS components to the isolation transformer or to other GPS components All system components must be installed and configured by an EGI support or authorized engineer Deviating from the supported con...

Страница 18: ...al system and is therefore responsible for ensuring that the system complies with the requirements of the system standard IEC 60601 1 1 If in doubt consult your EGI support engineer at supportteam egi...

Страница 19: ...ains cord supplied with the protective ground terminal The presence of ground protection preserves the patient s safety as well as your own Check that your local electrical plant can guarantee an effi...

Страница 20: ...nent other than the Net that is being worn inside or outside of the patient area 1 4 3 Moving Warnings WARNING The GPS weighs 100 kg 220 lb Tipping hazards Use caution when moving the GPS and do not t...

Страница 21: ...cal injury or equipment damage Ensure grounding reliability This can be achieved only when equipment is connected to an equivalent receptacle marked Hospital Only or Hospital Grade Use a properly grou...

Страница 22: ...he GPS only if the system is powered off and the power cord is unplugged from the outlet Do not position any cable such that it is subject to abuse CAUTION Removing any of the outer panels of the GPS...

Страница 23: ...8103002 56 2018 07 17 23 Clean the external surface except the camera lenses with a cloth that is lightly soaked with lukewarm water and a gentle detergent based on a neutral soap Dry with a clean dr...

Страница 24: ...24 GPS 3 User Manual 8103002 56 2018 07 17...

Страница 25: ...a GSN The dome is in the shape of an icosahedron with the bottom removed with a high resolution high sensitivity camera mounted at each of the 11 remaining vertices See Figure 2 1 Figure 2 1 GPS dome...

Страница 26: ...t from the gantry Camera 9 located closest to the gantry The LED lights are not required for capturing images However they can be useful to technicians for centering patients in each of the software s...

Страница 27: ...el aspect ratio other camera variables focal length u offset and v offset 2 1 2 Gantry The gantry has two main sections A lower stationary section that remains secured to the floor with four locking c...

Страница 28: ...ver the system should be recalibrated see Appendix B GPS Calibration if you move the GPS to another room or building knock the dome out of alignment or if a section of sensors will consistently not so...

Страница 29: ...in the dome Figure 2 4 Calibration object and stand 2 1 4 Computer and Monitor The GPS comes with a dedicated computer and monitor to acquire view and edit GPS images For all safety maintenance and us...

Страница 30: ...s 600 VA max Table 2 1 lists the transformer s specifications For the GPS s power consumption values see Table 1 3 Table 2 1 Specifications for the ISB 060W isolation transformer Fuse rating 6 3 AT 12...

Страница 31: ...into the isolation transformer Remember that all power connections are routed through the isolation transformer CAUTION Do not plug the GPS USB cable into another USB hub before plugging it into the...

Страница 32: ...Figure 2 6 and do the following 1 Hand loosen the upper gantry s locking handle counterclockwise about two turns 2 From behind the gantry hold both handle bars on the upper gantry and manually slide...

Страница 33: ...d that you remove the dome See Figure 2 7 Instructions are provided below for moving the GPS with the dome attached rotated and removed WARNING Tipping hazard ONLY move the GPS as follows By pushing i...

Страница 34: ...dome 2 Remove power from the GPS as follows a On the GPS computer close all software b Select Apple Shut Down to turn off the computer c On the isolation transformer turn off the mains power supply b...

Страница 35: ...ou will adjust the height of the dome when the GPS is used for the next patient 2 4 2 Dome Lowered and Rotated Use this procedure when moving the GPS within the same building with doorways between 90...

Страница 36: ...cked while rotated However it is perfectly balanced and should not spring back when the latch pin is properly seated To ensure that the dome is not bounced out of its rotated position while being move...

Страница 37: ...meone bring along the patient chair or bring it separately 2 4 2 4 Set Up the GPS When at the GPS s new location do the following 1 Lock all four casters 2 Return the dome to its normal operational po...

Страница 38: ...t Down to turn off the computer c On the isolation transformer turn off the mains power supply by flipping the mains disconnect switch to OFF O 3 Unplug all GPS cables data and power and safely secure...

Страница 39: ...rol box Figure 2 8 Inside the control box of the GPS 1 Using the T15 Torx screwdriver remove the cover of the control box It is attached between the 4 5 9 camera triad a Carefully pry off the screw ca...

Страница 40: ...ocket nut driver release the two ground wires the power cord and the upper frame ground wires a Remove each nut from the grounding post b Lift each ground wire off the grounding post 3 Unplug the two...

Страница 41: ...8 07 17 41 4 Unplug the input cord from the power supply 5 Using the 5 32 inch Hex L wrench remove the screw from the cable tie down located near the cable pass through hole Notice that the cable tie...

Страница 42: ...ed by the cushioned clamp that is the USB s power and PC cables and the power supply s power cable through the hole and into the dome rotation bracket 2 4 3 3 Remove the Dome and Move the GPS 1 Using...

Страница 43: ...nd push the GPS forward Have someone bring along the dome and patient chair or bring them separately 2 4 3 5 Set Up the GPS When at the GPS s new location do the following 1 Lock all four casters 2 Re...

Страница 44: ...44 GPS 3 User Manual 8103002 56 2018 07 17...

Страница 45: ...m 2D images The basic principle is triangulation which mathematically intersects lines of sight extending from multiple cameras to a point on an object to produce a 3D coordinate The GPS process depen...

Страница 46: ...echnical Support Table P 1 Intel based Macintosh running Mac OS X 10 11 or later 2 GHz Core 2 Duo processor minimum 8 GB RAM minimum When using Silver Dot GSNs see Section 4 1 1 GPS Acquisition 3 1 2...

Страница 47: ...e White Label or the Silver Dot sensor labels Ensure that the GSN has been applied such that sensors are evenly spaced across the head Ensure that all sensors of the GSN are clearly visible and that n...

Страница 48: ...that the GSN is visible in all 11 camera views do the following Camera View Ensure that Each camera view Sensor glare is minimal and sensor numbers are readable Three cardinal points are visible This...

Страница 49: ...in the GPS Solver sensor modeling software 4 2 1 Menu Bar The standard controls of the GPS Acquisition menu bar operate as expected If the GPS is not connected to the computer no menus will appear 4 2...

Страница 50: ...50 GPS 3 User Manual 8103002 56 2018 07 17 Figure 5 1 GPS Acquisition s Capture Images window...

Страница 51: ...r the patient s head or the calibration object The guides can be selected only during live streaming and will not appear in the saved images Capture When selected stops the live streaming and captures...

Страница 52: ...crush hazard When adjusting the GPS dome to accommodate a patient s height and or position keep all clothing hair and body parts well away from moving parts 1 Position the patient 2 Start GPS Acquisit...

Страница 53: ...n be useful to technicians for centering patients in each of the software s 11 camera views Click Capture Images 5 Ensure that the patient does not move so that images are not blurred 6 In the Capture...

Страница 54: ...able click Save Images and proceed to step 9 If unacceptable click Live to restart the streaming of live video and readjust the patient s position and or dome s height 10 Click Save 11 After saving im...

Страница 55: ...GPS 3 User Manual 8103002 56 2018 07 17 55...

Страница 56: ...ch photograph Only a minimum of interaction is needed to adjust sensors for maximum accuracy With experience modeling the sensors in a 256 channel Net takes 15 to 20 minutes 5 1 GPS Solver Menu Bar Th...

Страница 57: ...you can reset the solution 5 1 3 File GeoScan Batch Converter GeoScan files from the GeoScan handheld sensor digitization system can be converted with a File menu option from their txt file format in...

Страница 58: ...der containing files into the file drop pane For each file select the desired export file format For each file select the correct Net Type Select whether or not to save the exported files to the input...

Страница 59: ...Calibration Open Calibration The Calibration menu options are used during calibration not acquisition or solving For details see Appendix B 5 2 Solving Sensor Locations GPS Solver tracks your progres...

Страница 60: ...lect the correct GSN under Net Type 5 2 2 Identify Sensors Before the GPS Solver can semi automatically analyze and locate sensors it will ask you to identify one sensor in each camera view always sta...

Страница 61: ...de below it b Click Yes or No to confirm the location you clicked in step 1a If sensor 8 is not clearly visible zoom the image and or click and drag the image around in its pane Notice that sensor 8 i...

Страница 62: ...g to blue and transparent blue labels appearing in the 2D model view you will see a Please wait a moment message at the top of the screen and an Optimizing projections message next to the green progre...

Страница 63: ...r all transparent blue labels that are misaligned from their corresponding sensors in the photo 3 Click and drag any transparent blue labels over their corresponding sensor such that their center dots...

Страница 64: ...ve Therefore some labels that appeared aligned early on may show as unaligned as surrounding labels become aligned Watch for these changes 7 As sensors get verified in more than one camera image the b...

Страница 65: ...e 2D model view is aligned over the correct sensor The Sensor Error value will update with each label you move You may need to make a small adjustment in both camera views to reduce the error to 1 5 m...

Страница 66: ...echnical Support Table P 1 2 After all sensors have turned green rotate through the 3D model view to make sure nothing was missed 3 Verify in the Status pane that all 11 camera views show as verified...

Страница 67: ...t cannot be removed 5 2 6 Save After the Status pane shows all stages are checked as completed save your file File Save As Close red button Yes Save changes Dialog Remember that it is not uncommon for...

Страница 68: ...lving your file you can export a solution file from GPS Solver that you can embed into your data file The following export formats embed into the given data formats GPS Solver export file formats Data...

Страница 69: ...inate xml files to later identify which have been placed and which have not Finally the coordinates xml file does not contain any patient specific information Therefore you will need to carefully mana...

Страница 70: ...Manual 8103002 56 2018 07 17 7 Notice that the EEG file s package contents already contains a coordinates xml file 8 Drag and drop the new coordinates xml file into the EEG file s package contents and...

Страница 71: ...GPS 3 User Manual 8103002 56 2018 07 17 71...

Страница 72: ...72 GPS 3 User Manual 8103002 56 2018 07 17 Appendix A GSN Sensor Layouts If needed use these sensor layouts for reference Figure A 1 32 channel GSN sensor layout...

Страница 73: ...GPS 3 User Manual 8103002 56 2018 07 17 73 Figure A 2 64 channel GSN sensor layout...

Страница 74: ...74 GPS 3 User Manual 8103002 56 2018 07 17 Figure A 3 128 channel GSN sensor layout...

Страница 75: ...GPS 3 User Manual 8103002 56 2018 07 17 75 Figure A 4 256 channel GSN sensor layout...

Страница 76: ...uld indicate a misaligned camera The calibration procedure involves optimizing the camera parameters so as to place all the calibration targets on a spherical surface of the correct radius while maint...

Страница 77: ...gantry and dome enough to place the calibration object on its stand within the dome s area without tipping the object From behind the GPS hold both handle bars on the upper gantry and manually raise t...

Страница 78: ...File as the last name and the date as the patient ID number c Enable or disable the dome s white LED lights Enable check the Enable Auto White LED Lights checkbox to turn the LEDs on during system pow...

Страница 79: ...ss and or glare in the images Note that this setting applies to both the video that is streaming now and the images that will be captured after clicking Capture 6 Click Capture The streaming video wil...

Страница 80: ...sent directly to the adjustment phase There is no automatic alignment of targets A known calibrated state is required for this feature The calibration targets need to be projected to more than two ca...

Страница 81: ...After the Status pane shows all stages are checked as completed select Calibration Calibrate The system will calibrate and save the calibration output to a folder that is shared with GPS Acquisition N...

Страница 82: ...reprojection error is below 2 0 mm you are done If the reprojection error is above 2 0 mm go to step 7 7 For reprojection errors above 2 0 mm reverify label positions and recalibrate as follows a Rev...

Страница 83: ...GPS 3 User Manual 8103002 56 2018 07 17 83 e Verify that the reprojection error is now below 2 0 mm f If you have any issues contact EGI Technical Support Table P 1...

Страница 84: ...ation Object Target Layouts If needed use these target layouts for reference These layouts show which targets should be visible on the calibration object in each camera view Figure C 1 Camera view 1 s...

Страница 85: ...r Manual 8103002 56 2018 07 17 85 Figure C 2 Camera view 2 showing targets 1 2 3 6 7 11 12 13 16 17 21 22 23 30 31 and 36 Figure C 3 Camera view 3 showing targets 1 2 3 4 7 8 12 13 14 17 18 22 23 24 2...

Страница 86: ...User Manual 8103002 56 2018 07 17 Figure C 4 Camera view 4 showing targets 1 3 4 5 8 9 13 14 15 18 19 24 25 26 27 and 33 Figure C 5 Camera view 5 showing targets 1 4 5 6 9 10 14 15 16 19 20 26 27 28 2...

Страница 87: ...3 User Manual 8103002 56 2018 07 17 87 Figure C 6 Camera view 6 showing targets 1 2 5 6 10 11 12 15 16 20 21 28 29 30 31 and 35 Figure C 7 Camera view 7 showing targets 2 3 7 8 11 17 22 23 24 31 32 an...

Страница 88: ...88 GPS 3 User Manual 8103002 56 2018 07 17 Figure C 8 Camera view 8 showing targets 3 4 7 8 9 18 23 24 25 26 32 and 33 Figure C 9 Camera view 9 showing targets 4 5 8 9 10 19 25 26 27 28 33 and 34...

Страница 89: ...PS 3 User Manual 8103002 56 2018 07 17 89 Figure C 10 Camera view 10 showing targets 5 6 9 10 11 20 27 28 29 30 34 and 35 Figure C 11 Camera view 11 showing targets 2 6 7 10 11 21 22 29 30 31 35 and 3...

Страница 90: ...GPS components see Table D 3 Recommended separation distances between radio frequency RF communications equipment and the GPS see Table D 4 Note that portable and mobile RF communications equipment ca...

Страница 91: ...etic Environment Guidance RF emissions CISPR 11 Group 1 The GPS uses RF energy only for its internal functions Therefore its RF emissions are very low and are not likely to cause any interference in n...

Страница 92: ...kV for power supply lines 1 kV for input output lines Mains power quality should be that of a typical commercial or hospital environment Surge IEC 61000 4 5 1 kV differential mode 2 kV common mode 1 k...

Страница 93: ...magnetic Environment Guidance Power frequency 50 60 Hz magnetic field IEC 61000 4 8 3 A m 3 A m Power frequency magnetic fields should be at levels characteristic of a typical location in a typical co...

Страница 94: ...V m 80 MHz to 2 5 GHz 3 V rms 3 V m Portable and mobile RF communications equipment should be used no closer to any part of the GPS including cables than the recommended separation distance calculate...

Страница 95: ...ess telephones and land mobile radios amateur radio AM and FM radio broadcast and TV broadcast cannot be predicted theoretically with accuracy To assess the electromagnetic environment due to fixed RF...

Страница 96: ...Rated Maximum Output Power of Transmitter in watts Separation Distance According to Frequency of Transmitter in meters 150 kHz to 80 MHz d 1 2 P 80 MHz to 800 MHz d 1 2 P 800 MHz to 2 5 GHz d 2 3 P 0...

Страница 97: ...GPS 3 User Manual 8103002 56 2018 07 17 97...

Страница 98: ...98 GPS 3 User Manual 8103002 56 2018 07 17...

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