SHARK Log XRay
Contents
1. 1 3 2 GENERAL INFORMATION 2 5 3 OPERATING SECURITY rieeceeecievoedu suu e enun aeu Cuv eam aHa XV Ex Cha 3 6 4 SYSTEM DESCRIPTION eere rennen nnne nu rana ran rana 4 7 4 1 Included io axxo exa eda o ax o ax ou xa on E NEARE RAN 4 7 4 2 BenSOIS cii iria de dacuavadasctas E 4 8 5 EOGDATRN 5 9 6 OPERATION eerren bh en yk easi egre n bac n Yi are n gi co ba em kk rari eren 6 11 6 1 Event LISU ciii esie eher a 6 11 T SETUP R 7 12 7 1 System 7 12 7 2 Installation lt 7 14 DOBDVBVOE aii E leti a hee 7 14 T22 iiec sicci 7 16 re NR LBDCESLLII MM 7 18 7 2 4 Geometric 7 19 7 3 GOPFOCTUOIS sicaris a chara Sane RR2. 7 19 7 4 Calculation Factors ie c bai ce ae ees Pau e E Des 7 20 7 5 X ray Shutdown times accede secant 7 20 7 6 1 7 21 8 MAINTENANCE 8 22 8 1 Data Eo 8 22 8 2 Load oec sce ees Pa ce C es Pa o e a Pa ce 8 23 8 3 Save Process Data 8 23 8 4 Detector Calibration 8 24 86 5 Test Funci ns sarsana 8 25 8 5 1 Data Acquisition snssssnnnnnnnennnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn nnmnnn 8 25 8 5 2 Log MI eee ee PE ner ey eee 8 26 8 5 3 SWEEP DAG AKSA 8 31 8 5 4 Pixel aciei NERAN erg e ER 8 34 8 6 SimuUlatiOti soren ARR 8 35 8 7 Geometric 8 36 9 FILES AND DATA 5 9 37 10 SYSTEM RESTART AAA o ruv naa Ee Rau 10 38 11 SCANNER ROOM _ 11 39 12 12 40 1 4 SHARK Lo
3. Quality Vm tall Quality komponent Quality beam Spare 1 Spare 2 Quality 0 5 tall 2 7 5 X ray Shutdown times eel 2000 Used if the system shall turn off the x ray system automatically Requires that the X Ray system be manually restarted with the X ray Control Unit 7 20 SHARK Log Xray T CTRONIX SYSTEMS INC 7 6 Pixel Filter L Pixel Filtering Info oeoceoce ceo Ccecece If individual pixels in the detector are defect using data from the pixel neighbors can filter them See chapter 8 5 4 page 8 34 how to identify defect pixels The filter becomes active after next detector calibration 7 21 SHARK Log Xray T CTRONIX SYSTEMS INC 23 8 MAINTENANCE The following commands are available Archive Edit View Setup JERE Windows Help Data for each log Load All Tables Save Process Data Detector Calibration Testfunctions Simulation Geometric Calibration 8 1 Data for each log Through the menu selection Tools Data for each log a function can be started that writes out infor mation log by log L Data for each log No Length Emm Dia LoaType Whon Dist Pine Heart Diamet Species Roll iv Save File Reset More Latest Log lt Other Status gie Stated 0611231226 He File Size kb 0 0 Stopped 0511231405 mm New Number 0
4. Select Data Select Data 1 Cal data Raw data Selection of displayed data Calibrated data Raw data data directly from the detectors Note that Selecting Raw Data during normal production will cause the log calculation to fail Use this option only when there is no logs on the conveyor or when the conveyor is not moving 8 33 SHARKLog Xray T CTRONIX SYSTEMS INC 23 8 5 4 Pixel errors It is then possible to remove the error by using the neighboring pixels If you right click near the faulty pixel the following table will show the intensity value for each element Here you can see that element no 279 is faulty L Pixel Intensities Into Updated 06 11 0911 11 Active More The element number of the faulty pixel must be entered in the table for Pixel Filtering see chapter 7 6 page 7 21 8 34 SHARK Log Xray T CTRONIX SYSTEMS INC 8 6 Simulation og Calc Simulation Load from File 2 109 10 199 3 Man LoaNo No Files 1 5 Lenath 7 Top Dial Start 8 Top Dia 2 Dia 0 Dia 1 Vol 2 Tot Vol Species 5 Whorl Volume Spruce C B Total Densit Acc Op 7 Heart Densit 8 Splint Densit Acc fe 9 Heart Diameter Simsnap txt Save 23 U S Pine Size kb 00 Load from Browse to the first file that is to be used in the simulation o Files Number of files to be used Start Press to start the calculation
5. Close Start Reading Stop Reading Clear Image Repeat Now Save to File Load from File Compensation None Show Comp Pine 3pruce C Direction 61 C 1and2 Select Data Sweep is a line of signals from the 576 detector elements pixels The following symbols are used Log measurement is active Log measurement is in the end phase 0 gt 0 The photocell is not activated light 0 gt 0 The photocell is activated dark Note that the photocell symbol directly shows the status of the photocell without the distance delay normally used It is then easy to check the photocell using this display 8 31 Conv Pos Start Reading Stop Reading Clear Image Repeat Now Save to File Load from File Compensation Show Comp Lin Comp Species Direction 8 32 SHARK Log Xray T CTRONIX SYSTEMS INC 2 3 Radiation level 0 4095 The scale is inverted so that the highest level no damping is at the bottom Detector element 0 575 Current conveyor position in pulses 0 65535 Continually reads data from the detectors The reading is done in intervals of one second Closes continuous reading Clears the picture area Every sweep is erased before showing the next one Erases the picture Stores the current log as a file A form Save as appears and it is possible to enter a file name The default name is ddhhmmnn dat where dd
6. Species Specify what species shall be used in the calculations Species from the operator is saved in the data files Save Specify if the result shall be saved in simsnap txt 6 35 SHARKLog Xray T CTRONIX SYSTEMS INC 23 8 7 Geometric Calibration E SweepData for Geometric Calibration Geometric calibration requires special equipment to be placed on the conveyor inside the scanner Then it is possible to calculate the absolute position of the x ray tubes and the detectors This needs to be done only once after commissioning 8 36 The following data files are produced by SHARKLog and are available to the user SHARK Log Xray T CTRONIX SYSTEMS INC 2 3 9 FILES AND DATA STORAGE c hod snap txt Result from Data for each log Every log produces one line of data separated by spaces The file can be read and evaluated in Excel Maximum size is 20MB c hod snap bak Copy of snap txt which is created by the command Reset before snap txt is deleted c nod simsnap txt Result from simulation Same format as snap txt c data rlxnnnn dat Result from Data acquisition One file contains all raw data from a log c data nnnnnnn dat Sweep data file The following files are important components of SHARKLog XRay This list is for information only More components are installed inside the Windows system c nod hod exe Operator s interface to SHARKLog XRay
7. Measurement Computer Normally there are some text messages shown but if there are messages containing the words error or fault please write down these Order The software in the two computers are dependent of each other so it is important to restart in the right order If the procedure Restart1 is not working try using Restart2 Restart 1 1 Close the HOD program on the Operator s Computer File Exit Do NOT close Windows 2 Restart the Measurement Computer MD by pressing the reset button in the cabinet 3 Select the MD screen Press Ctrl Ctrl Enter Wait until the program starts It takes a while because the program file is loaded from the Op erator s Computer It is ready when you can see a blinking dot at the lower left side of the screen 4 Start the HOD program on the Operator s Computer by double clicking the icon Now SHARKLog XRay should work properly again Restart 2 Close the HOD program on the Operator s Computer File Exit Delete the file xray bin under c nod md dbpd Use the Explorer Restart Windows Start Shut down Restart Wait until Windows comes up Restart the Measurement Computer MD by pressing the reset button in the cabinet Select the MD screen Press Ctrl Ctrl Enter Wait until the program starts It takes a while because the program file is loaded from the Op Computer It is ready when you can see a blinking dot at the lower left
8. day hh hour mm minute and nn a number 00 99 It is also possible to enter a text description that is saved in the file Loads a stored file with log data A form to select a previously stored log appears Choices of compensation method for scan data In order to get a good view of different logs you can use different compensations of the data None No compensation Ext File Function defined in an external file Log 1 Logarithmic function Log 1inv Logarithmic function inverted Parable Parable function Linear Linear function between two levels A and B 0 4095 Set below Everything under A becomes 0 everything over B becomes 4095 Shows the compensation curve for selected compensation Setting of offset values for linear compensation Species used when calculating diameter and edge values Choice of measuring direction to show log picture If 1 and 2 is selected then direction 1 is shown in the upper half and direction 2 is shown in the lower half SHARK Log Xray T CTRONIX SYSTEMS INC 23 Diameters and Edge Values When the automatic update is interrupted Stop Reading and there is an object in the scanner then the corresponding diameter and edge values are shown Lin Comp A 0 B o r Species Pine Spruce Direction ey Gelect C2 Edge Values gt lt Diameter 2 Note that the values differ slightly if Pine or Spruce is selected
9. OK Tube1 35 Tube2 36 C Scanner 36 C Computer 36 C By means of the selection fields at the upper edge the data to be shown in the list are set By pointing on a line and pressing the button More all the data on the log appear The larger window is consecutively supplemented with data for the logs that have passed the evalua tion zone It is possible to move up and down in this window even while new logs are being added to the list If Roll is marked the list will move upward as new logs are being added The latest log can then be found furthest down If Roll is not marked the list is at a standstill and new logs are added at the end of the list as long as there is room When the screen surface is filled a scroll list comes up which makes it possible to move manually in the list The window Latest log continually show the data for the latest log 8 22 SHARK Log Xray T CTRONIX SYSTEMS INC 2 3 Through the pushbuttons Start and Stop the collection of data is controlled The fields Started and Stopped show the times for these occasions The pushbutton Start activates storage of all log data in a file on the hard disk if Save File is marked This file is called C DATA SNAP TXT The file is added to until the pushbutton Stop is clicked on The file can at the most be 20 MB thereafter the data storage ceases The pushbutton Reset changes the name SNAP TXT to SNAP BAK any older SNAP BAK is deleted The file format is a normal text
10. c hod hod ini Installation parameters for hod exe c nod hod hlp Help file C nod komp bin Files containing compensation data for image pres entation c hod rtbackup exe Backup program used for security copy of data bases and parameters c nod rtrest exe Program for restoring backup c hod db hod mdb Database file where all settings are stored c hod md program xRay Program for Measurement Computer Is loaded via network c nod md dbpd xray bin Database file used by Measurement Computer Contains process data Created by the command Tools Save Process Data c nod md dbpd xRay ini Starting parameters for Measurement Computer program XRay 9 37 SHARK Log Xray T CTRONIX SYSTEMS INC 2 3 10 SYSTEM RESTART Certain situations make it necessary to restart SHARKLog XRay The system contains two computers connected in a network If one computer fails the other one also is affected The following procedures must be followed when restarting the computers NB Restarting the computers is an abnormal measure that Tectronix Systems urgently wants to find a remedy Before restarting a computer it is very important to save any error messages that can help explaining what went wrong Reporting such error messages to Tectronix Systems will help development of soft ware updates Operator s Computer Errors are shown in Windows Messages forms
11. format suitable for export to other software prod ucts such as Excel Clicking on the Clear button zeros the counter No Logs is incremented for each log that is at least as long as set in Installation Parameters Conveyor Min Log Length If the length is shorter Short Logs is incremented instead The temperature is monitored at 4 different locations which are updated every 100 second 8 2 Load Tables Loads the database to the Calculation Computer 8 3 Save Process Data Saves the process database in a file on the hard disk Must be used after any change of the parame ters otherwise the system will not work properly after a power failure 8 23 SHARKLog Xray T CTRONIX SYSTEMS INC 23 8 4 Detector Calibration To obtain the best results the measuring system has to at certain intervals be calibrated This means that the detector s gain and offset are adjusted This is especially important after large temperature fluctuations Calibration is done through the use of the menu Tools Detector Calibration E Detector Calibration CALIBRATE Status Saved file Load from File Latest calibration Calibration step by step 1 Make sure that the conveyor is at a standstill and the scanner frame is free from carriers etc 2 The button Update updates the data view so that it is possible to see if there are any objects in the scanner 3 Click the button Start The calibration se
12. handles all communication with the host system 4 2 Sensors The signals from the photocell and pulse encoder are used for log positioning and length measure ments Photocell The photocell determines where the log starts and ends which results in a length value To better handle logs with damaged ends the photocell consists of one transmitter and two receivers There is also a separate signal indicating if there is soil on the unit s window It is important that the photocells are checked with regular intervals so that they are clean and in correct position Pulse Encoder The conveyor s position is determined by the pulse encoder connected to the rotating wheel The position value is a number between 0 and 65535 and can be checked in Tools Test Functions Sweep Data Correct length measurement is dependent on the scale factor of the circumference of the rotating wheel see Setup Installation Parameters Conveyor Temperature The temperature is measured in the following locations Tube 1 X ray tube in direction 1 Tube 2 X ray tube in direction 2 Scanner Inside the scanner at top Computer Inside the computer rack inside the cabinet The temperature readings are updated every 100 seconds and can be checked in Data for each log In System Parameters there are settings for allowed temperatures deviations from the limits will cause an alarm 4 8 5 LOG DATA SHARK Log Xray T CTRONI
13. log or the next can be selected Logs stored as a file on the hard disk can also be viewed Select Log Data SCANNER Log Ready lt EH Ec EM EH Break Third Second Latest Next Qut Next In Latest Latest g Current Log Keep Loadatafile Break Press if you for example want to see saved logs instead Select log Click the radio button for the selected log Confirm by pressing OK Current Log Select this if the current measurement shall be aborted and the log that has passed the scanner so far will be viewed Confirm by pressing OK Keep Logdatafile Mark this if the log image shall be saved on hard disk 8 26 SHARKLog Xray T CTRONIX SYSTEMS INC 23 Example of a log image Rixs0018 dat ID 1682 512 sect 1 512 Pine The upper status line displays Filename 018 ID number 1682 Number of sections lines 512 Length 512 The lower status line displays Info text entered when the log was saved Date and time In the log picture above the log has been obtained from a stored file Both of the measuring directions are shown The vertical black piles are the conveyor s carriers The brown line under the image shows the distance where the photocell was active Load data Loads data from one of the latest logs that have been run through the scanner A form with choice of selecting the latest next latest or the preceding log appears Load from File
14. side of the screen 7 Start the HOD program on the Operator s Computer by double clicking the icon 8 Select Load all tables under the menu Tools 9 Answer Yes to the question Should all tables be loaded 10 Select Save Process Data under the menu Tools 11 Answer Yes to the question Save process Data O 10 38 ms INC CTRONIX SYSTE SHARK Log Xray T 2 3 11 SCANNER ROOM LAYOUT p 100025 11 39 SHARK Log Xray T CTRONIX SYSTEMS INC 2 3 12 WARRANTY Tectronix Systems Inc extends to the original purchaser a limited warranty from the date of installation The Equipment is warranted to be free from defects in materials and or work manship provided the equipment is installed and operated in accordance with the recom mendations and instructions written in the operator s manual for this equipment This war ranty is limited to repairing or replacing at Tectronix s option any defective component cir cuit board or module contained within the product only when it is returned with an Tectronix Return Material Authorization RMA number to Tectronix or to an Tectronix designated re pair facility In all cases the customer is responsible for shipping charges to and from Tec tronix or the Tectronix designated repair facility The SHARK Log Xray detector may qualify for an onsite repair at no additional charge to the owner when determined by Tectronix e Your SHARK
15. 7 2 Installation Parameters The parameters that are found here should normally be adjusted during commissioning and exchange of measuring units 7 2 4 Conveyor Info Updated 05 12 06 13 05 Distances Scale Factor Photocell Log End Log Gap Ray 3Ddata Check Point Min dist send point Min Scan Dist Min Log Length Pulse Encoder Inverted Pulses 4 Distances Length scale factor Photocell XRay Log End Log Gap XRay 3Ddata Check Point Active gt Help Filtering Intensity Cony 70 Min Intensity Full Xray 4095 Min Conv Height 140 Pixel Conv Areas 5 Conv Height 220 Photacell Inverted Signal Number of millimeter conveyor movement that sponds to one revolution on the turning wheel where the pulse encoder is connected Distance from the photocell to the x ray sweep plane The distance that the photocell has to be free in order to terminate the measuring for the current log Minimum distance from accepted Log End previous parameter to the start of next log May be set to 0 Distance from SHARKLog XRay to a point where data from 3D scanner are safely received SHARKLog XRay must have finished with its own calculation at this point If no 3D scanner is used set this parameter to 0 Distance from previous point 3Ddata to a point where data safely has been received by the h
16. Beam Corr Offset 8 05 Offset 1 57 Gain Small 1 0064 Gain 0 9787 Breakpoint 270 Breakpoint 310 Primary Calculation Sweep Limit mr1 Sweep Limit mr2 Secondary Calculation Skipped Calc End Values Skipped Line End Values Pine Beam Corr Offset Small Gain Small Breakpoint 1 Offset Large Gain Large Breakpoint 2 Spruce Beam Corr recalc Offset Small Gain Small Breakpoint 1 Offset Large Gain Large Breakpoint 2 7 18 Break Help Secondary Calculation Skipped Cale End Values 4 st Skipped Line End Values 20 Spruce Beam 205 Offset 4 43 Gain Small 0 9706 Gain 1 0009 Breakpoint 270 Breakpoint 31 0 The limit between bark and wood in direction 1 0 4095 The limit between bark and wood in direction 2 0 4095 Number of lines that are skipped at the ends of the log A value of 0 means that only empty lines will automatically be removed Number of lines that are skipped at the ends of the log before calculation Correction of diameter value due to lower damping of the radiation in the log s surface layer Pine Constant term diameters lower than breakpoint 1 Proportional term diameters lower than breakpoint 1 Limit between small and medium diameters mm Constant term diameters higher than breakpoint 2 Proportional term diameters higher than breakpoint 2 Limit between medium and large diameters mm Correction of diameter value du
17. Indicated in degrees Distance from the radiation source to the detector unit direction 2 Indicated in mm Distance between the midpoint of the detector and the centre of the radiation line from the xray source mm Distance between the Xray sources mm Adjustment of the detector unit s zero point offset and amplifying gain for the current measuring task Checking that calibrations are done at regular time intervals A message is sent to the host system when it is time for a new calibration A value of 0 means no time check Checking that calibrations are done when tempera ture is changing A message is sent to the host system when it is time for a new calibration A value of 0 means no temperature check Levels used for checking that it is possible to per form a calibration Timing for the signals that control the calibration sequence Must be at least 4000 4 s Delay means waiting before the action starts It is recommended to fill in the same values as are set in the Xray Control Unit this will help when evaluating the raw data image files 7 17 7 2 3 Image Analysis SHARK Log Xray T CTRONIX SYSTEMS INC Parameters that control the evaluation of the X ray picture can be found under the menu Setup Installation Parameters Image Analysis image Analysis Info Updated 05 10 12 10 12 Actively More Primary Calculation Sweep Limit mr 1 Sweep Limit mr 2 Edge Filter Pine
18. Loads a stored file with log image data A form for selection of stored logs appears Next Loads the file with the next sequence number E g Viewing file RIx6007 dat and pressing Next will show file RIx6008 dat Prev Loads the file with the previous sequence number 8 27 Rescale Invert Conv Filt Contour Clear Save to File Compensation Show Comp Lin Comp Direction 8 28 SHARK Log Xray T CTRONIX SYSTEMS INC 2 3 Image view options If the log contains less than 900 scans the entire picture sur face on the screen will not be used If the check box is marked such a log will be re scaled so that the entire picture surface is used The log picture s grey values are shown inverted Carriers and other parts of the conveyor are removed Calculates the outer limits of the log used for diameters Options for conveyor filtering Normally 1 should be marked but not 2 Saves the current log as a file It is also possible to enter a text description that is saved in the file Choices of compensation method for scan data In order to get a good view of different logs you can use different compensa tions of the data None No compensation Ext File Function defined in an external file Log 1 Logarithmic function Log 1inv Logarithmic function inverted Parable Parable function Linear Linear function between two levels A and B 0 4095 Set below Everything under A becomes 0
19. Log Xray detector is designed to the most stringent manufacturing specifications to insure a long life in your industrial environment e Your SHARK Log Xray detector us warranted against defects in materials and workmanship a One year warranty on detector sensor head b One year warranty on electronics 12 40 SHARK Log Xray T CTRONIX SYSTEMS INC 2 3 Tectronix Systems Inc Unit 9 18812 96th Ave Surrey VAN 3R1 Tel 1 604 607 6028 Fax 1 604 607 6026 Internet www metal shark com Email service metal shark com Manual and operating instruction SHARK XRay Version 2 3 Software version 6 25
20. SHARKLOg SHARK Log XRay Operator s Manual Software Version 6 25 SHARK Log Xray T CTRONIX SYSTEMS INC 2 3 Copyright Tectronix Systems INC Tectronix Systems Inc 9 18812 96 Ave Langley VAN 3R1 www metal shark com Document history 2006 11 10 Ver2 2 Preliminary English version 2006 12 06 Ver 2 3 Applies to software version 6 25 SHARK Log Xray T CTRONIX SYSTEMS INC 2 3 1 SYSTEM INFORMATION Customer Name Location Date in Service d m y We would like to take this opportunity to thank you for purchasing your SHARK Log Xray scanner from Tectronix The confidence you have placed in our product is sincerely appreciated and we will endeavor to provide the best service and support possible Please take the time to read the User Manual completely as this provides you with the expertise necessary to install and adjust the system according to your re quirements In addition to this you will learn about the sophisticated options provided by the SHARK Log Xray electronics If you have any problems in the set up and operation of your system the Tec tronix team are available to assist you Tectronix Systems inc Unit 9 18812 96 Ave Surrey British Columbia Canada V4N 3R1 Equipment Information Label Telephone 001 604 607 6028 Fax 001 604 607 6026 E mail service metal shark com SHARK Log Xray T CTRONIX SYSTEMS INC 2 3 Table of Contents 1 SYSTEM INFORMATION
21. Voltage Supply Supply The system consists of the following equipment Scanner frame with X ray tubes and detectors e High voltage generators with coolers and control unit e Electronics cabinet containing Measuring computer Operator s Computer and power supply e Operator s monitor keyboard and mouse X Ray Control Unit The Measuring Computer s monitor and keyboard is only used during commissioning and mainte nance All other communication with the system is done through the operator s PC Data communication with the host system for example SHARK15 or SHARK21 takes place either through the network cable or by serial link Scanner Both of the scanner s X ray sources radiates the logs that pass through the measuring area The ra diation is caught up by detectors that are scanned a large number of times per second The measur ing results are analyzed to produce a picture of the log under bark Operator computer The Operator Computer with VDU keyboard and mouse is used to start and stop the system set table values parameters etc that affect the system s functions indicate status in the measuring system verify measurement data or trouble shoot calibrate The operator computer is an Industrial PC with Microsoft Windows 4 7 SHARK Log Xray T CTRONIX SYSTEMS INC Measuring Computer The Measuring Computer collects and analyses the data from the scanner It also makes a final calculation of log data and
22. X SYSTEMS INC 2 3 The following Log Data are calculated by the system Length Sweep Log ID Diameters Top Dia 1 Top Dia 2 Top Dia Avg Dia Top Volume Total Volume Logtype WhorlDist Density HeartDia Species Length measured by pulse encoder and photocell Unit cm Number of sections lines in the x ray image Sequence number for each log 0 1 65535 0 1 All diameters are calculated through linear regression of top data from the log See Setup System Parameters Unit mm Diameter in direction 1 Diameter in direction 2 Minimum of TopDia1 and TopDia2 Average of TopDia1 and TopDia2 Volume of a cylinder based on AvgDia and Length Unit Total volume calculated by adding the volume of all sections Unit 1 Butt Log 2 Log 3 0 Unknown Average distance between whorls Unit Average density of the whole log Diameter of the heart Unit mm 0 Unknown 1 Pine 2 Spruce Determined in one of the fol lowing ways Method 1 Determined only from SHARKLog XRay s dex the limit value is the average of the two limit values given in System Parameters If the SpeciesIndex is lower than this limit the species is pine otherwise it is spruce Method 2 Determined by using both SpeciesIndex and the deci sion from the operator e f the SpeciesIndex is in the safe area below Upper Limit Pine or above Lower Limit Spruce then the operator s in
23. e to lower damping of the radiation on the log s surface layer Spruce Note A correction for pine must be done first Constant term diameters lower than breakpoint 1 Proportional term diameters lower than breakpoint 1 Limit between small and medium diameters mm Constant term diameters higher than breakpoint 2 Proportional term diameters higher than breakpoint 2 Limit between medium and large diameters mm SHARK Log Xray SYSTEMS INC 2 3 7 2 4 Geometric Calibration Wil Geometric Calibration 640 2443 470 5716 494 8344 Do not alter these numbers they are automatically calculated when running the Geometric Calibration 7 3 Corrections Corrections _ 9995555580 All data may be corrected after the calculations by multiplying with Mult Factor and then adding a Constant 7 19 SHARKLog Xray T CTRONIX SYSTEMS INC 7 4 Calculation Factors Do not alter these numbers they are the result of quality algorithm calibrations Archive Edit View Tools Windows Help X e amp System Parameters Installation Parameters gt Calc Factors Logtype Corrections Logtype kt X ray Shutdown Logtype Pixel Filter Species Q Pine t Q Pine k Pine 1 Q Spruce t Q Spruce Q Spruce ARW Pine ARW Spruce Quality O 5 tall Quality OJS gran
24. eters that is added to the calculated log length Can be indicated as negative i e shortened The diameter is calculated using a straight line fit by the method of least squares Start of calculation line cm from top end End of calculation line cm from top end Position for calculated diameter cm from top end Can be outside the line limits above Factor that is multiplied by the calculated total volume Limits for safe determination of the species pine 1 spruce 2 Species will be pine if species index is lower than this value Species will be spruce if species index is larger than this value Must be greater than Upper Limit Pine Alternating ways to determine the Species See Species in chapter 5 Operator Operator alone decides XRay Only SHARKLog XRay s species index is used Species index is compared with the Operator s choice Allowed temperatures at following measuring points Tube 1 X ray tube for measuring direction 1 Tube2 X ray tube for measuring direction 2 Scanner Top of the scanner Computer Electronics cabinet in computer room If the temperature becomes too low or too high more than temporarily an alarm is given Indicated as intervals in for example 5 50 means at least 5 and at most 50 C The value 0 0 is interpreted such that the temperature check at the respective meas uring point is disconnected 7 13 SHARK Log Xray T CTRONIX SYSTEMS INC
25. everything over B becomes 4095 Shows the compensation curve for the selected compensation Setting of offset values for linear compensation Choice of measuring direction to show the log picture If 1 and 2 is selected then direction 1 is shown in the upper half and di rection 2 is shown in the lower half SHARKLog Xray T CTRONIX SYSTEMS INC 23 Sweep Data The sweep data is a diagram that shows data from a selected measuring scan Selecting scan is done by right hand clicking somewhere in the log picture and the sweep data will show up directly with a diagram for the scan where the mouse was placed For each scan crosscut the conveyor position is recorded as well as the radiation intensity in 576 measuring points The intensity ranges from 0 to 4096 units where 0 is the lowest radiation Measur ing direction one two or both directions can be selected E Sweep Data The following symbols are used Sweep data within measuring range of the log Sweep data in the start or end section of the log Level Radiation level 0 4095 The scale is inverted so that the highest level no damping is at the bottom Pixel Detector element 0 575 Conv Pos Current conveyor position in pulses 0 65535 Sect Number of the sweep section 1 2 Note that there are sections also before and after the log Direction Choice of measuring direction to show the log picture Direction 1 is red direction 2 is white Edge Values Only
26. g Xray T CTRONIX SYSTEMS INC 2 GENERAL INFORMATION SHARKLog XRay is a measuring system for determination of dimensions and grading of logs by means of X ray beams The measuring can be made on logs with bark and the result is a diameter measurement under bark e As Ys pev Signal from one NW me juo B cross section amp section MEERES 1 em Signal from one log detector 2 Signal from one log detector 1 Source 1 Source 2 The Log Scanner contains two X ray sources and two semiconductor X ray detectors set up so that two separate scaling directions are obtained The X ray sources consists of X ray tubes especially developed for log scaling in an industrial envi ronment and the detector measures the radiation intensity at a number of points along the log s crosscut The logs pass the scanner on a measuring conveyor with high positioning accuracy As a result a multi dimensional picture of the log is obtained In the system s computer the picture is analyzed and dimension under bark is determined for the log In addition to diameter at various points volume taper sweep ovality and other characteristics based on form are calculated Also other defects such as whorl of branches will give effect through variations in intensity The size of these variations is the basis for the quality factor which is a gauge of the log s timber grade Through anal
27. ost system This is the point where all data are available image data files can be saved data for each log is presented etc 7 14 Min dist send point Min Scan Dist Min Log Length Pulse encoder Inverted pulses Multiplication factor Reconstruction at carrier Max Intensity Conv Min Intensity Full Xray Min Conv Height Conv Area Max Conv Height Photocell Inverted signal SHARK Log Xray T CTRONIX SYSTEMS INC 2 3 Number of millimeters from the scanner to the point where log data transmission to the host system shall start The smallest distance between collected crosscuts mm This parameter limits the number of measurement values for alog when the conveyor moves extremely slow and should adapt according to the conveyor s speed when it is moving at maximum Shorter logs are ignored Temporary objects like short branches etc will not cause a log calculation Makes it possible to shift the channels if the pulse encoder is mounted so that the channels end up in the wrong se quence At a forward moving conveyor channel 1 should come 1 4 period before channel 2 The pulse frequency can be 1x 2x or 4x the number of pulses Indicate the alternative in question Parameters for reconstruction of how a crosscut should have turned out if it had not been affected by carriers Highest edge value 0 4095 that could have been af fected by the carrier foot in direction 1 Lowest intensity at full Xra
28. possible when Contour was selected in the log image Sect Select the section sweep by clicking one of the arrows delor by using the scroll bar Note You must close the Sweep Data window before clicking elsewhere on the screen otherwise the current window will be hidden 8 29 SHARKLog Xray T CTRONIX SYSTEMS INC 23 If Contour is enabled in the Log Image then diameter values are shown in the Sweep Data image Wi Sweep Data Note The diameters are calculated using the species that was applied to the log when it passed the scanner se Species in chapter 5 Pos The section position in mm from the first end of the log 2 Diameter ini direction 1 mm Edge limits in pixels M2 2 Diameter in direction 2 mm Edge Values The edge limits are shown only if this box is marked 8 30 SHARKLog Xray T CTRONIX SYSTEMS INC 23 8 5 3 Sweep Data This real time display is found under Tools Testfunctions Sweep Data The update rate is only maximum 2 frames per second but it is a fast way to see that the hardware is operating OK The conveyor position and the radiation s intensity at 576 measuring points are recorded for each scan crosscut The intensity ranges from 0 to 4096 units where 0 is the lowest radiation Measuring direction one two or both measuring directions can be selected The values from both measuring di rections are used to calculate scan diameter scan density and scan center Wil Sweep Data
29. put is excluded The result will be Pine if the SpeciesIndex is below Upper Limit Pine otherwise spruce e Else If the operator s species and SHARKLog XRay s spe cies are the same this will be the result e Else If the operator has a changed his decision from the last log then the operator s species will be the result e Else The species is determined as in method 1 5 9 Speciesindex Q Gen Q Pine Q Spruce U S Pine U S Spruce B Pine ARWPine ARWSpruce 1 Spare2 Spare3 Spare4 Spare5 5 10 SHARK Log Xray T CTRONIX SYSTEMS INC 2 3 Is normally a value between 0 and 300 where pine gives values up to a certain limit e g 140 and spruce gives values from a limit e g 160 and upwards In between there is an unsafe interval The limit values are set in Setup System Parameters and is given as a fraction number e g 140 is entered as 1 400 General quality index based on density variations in the log A high number denotes a log with many internal density alterations a bad log Same as above but optimized for pine logs Same as above but optimized for spruce logs Probability for U S Pine Integer 0 200 A high number denotes a good log Probability for U S Spruce Integer 0 200 Probability for Green knots Pine Integer 0 200 Annual Ring Width calibrated for pine Unit 1 10 mm e g a value of 25 means a ring width of 2 5 mm Annual Ring Width calibrated for spruce Uni
30. quence takes about 10 seconds 4 Ready when the text Calibration Ready is displayed Every calibration is saved in a file on the hard disk It is possible to load a previous calibration if de sired 8 24 SHARK Log Xray T CTRONIX SYSTEMS INC 8 5 Test Functions 8 5 1 Data Acquisition This function is used to collect log data for a number of logs These logs can then be used in the simu lation program or for graphic presentation under the menu Tools Test Functions Log Image These logs are stored on the harddisk in the folder C Data The file names are created based on consecutive numbers RLXxxxx DAT where xxxx is the file number 0000 9999 If the same number is indicated several times the old file will be overwritten Do not let the number of files in the folder c data become too large It is better to store the files to be kept in a different folder and then delete the remainder Data Acquisition Datafiles RH Xnnnn Start Next File Number 1l Last Filenumber 200 Help Interval 1 Conditions Active Conditions Missed Logs D st Close Next file number Next collected log gets this file number Updates automati cally while the data acquisition is active Last file number End number of the log files When this number is reached the data acquisition stops Interval Indicates at what interval the logs shall be stored 10 means that every 10 log is stored Conditions con Condition
31. s 4000 Gain Del 5 s Offset Gain 4000 ms If one of the scanning directions is not working it is possible to with limited accuracy temporarily only use the other one Normally both directions should be used i e the alternative 1 2 combined The detectors have 640 pixels of which 576 is used The first active detector pixel from the bottom of direction 1 The first active detector pixel from the bottom of direction 2 The total exposure time us for the detectors is 10 x Integration period x Sub samples 1 1000 1 2 4 256 Sizes and angles Angle detector 1 Dist Xray Det 1 Midpoint correction detector 1 Angle detector 2 Dist Xray Det 2 Midpoint correction detector 2 Dist between xray sources Detector Calibration Time checking Temp Checking Calibration Levels Calibration Times Info in saved files SHARK Log Xray T CTRONIX SYSTEMS INC 2 3 Geometric data for the scanner Do not alter these numbers they are automatically calculated when running the Geometric Calibration The detector unit s inclination towards the horizon tal plane direction 1 Indicated in degrees Distance from the radiation source to the detector unit direction 1 Indicated in mm Distance between the midpoint of the detector and the centre of the radiation line from the Xray source mm The detector unit s inclination towards the horizon tal plane direction 2
32. s on off When Conditions Active is marked only nected those logs that meets the given conditions are saved Note that the Interval also is in use Conditions Click to set the conditions Start Starts the data collection Stop Terminates the collection before the end number is reached Please note that if the interval is too small the scanner will not have time to do the normal collection and calculation work For example at interval 1 each log a log gap of at least 10 m at 2 m s is re quired 8 25 SHARK Log Xray T CTRONIX SYSTEMS INC When the button Conditions is pressed the following form is opened L Data Acquisition Conditions Info Updated 05 08 30 17 14 Active More Log Data Interval Log Data Interval Log Data Interval Top dia 250 265 0 Indicate here any special requirements concerning which logs are to be stored log parameter is selected in the column Log Data and the values that the logs shall have in order to store them are set in the column Interval Up to three different conditions can be used to define log to save same row All rows that are marked Active are checked and if the conditions in one of those rows are true then the log is saved 8 5 2 Log Image Shows a graphic picture of an X rayed log The log to be shown can be selected by indicating in the form Three Latest logs current
33. t 1 10 mm Up to 5 optional customer defined log qualities can be used SHARK Log Xray T CTRONIX SYSTEMS INC 6 OPERATION Any abnormal condition is presented in an Event List and the corresponding message is sent to the host system for presentation 6 1 Event List All events that occur in the system are stored in the event list This list can be studied and handled through the menu selection Operation Event list Wil Event Log Type Code Data Event Text Ray Kod Data Date Update Help Setup Info Show events pounger 2006 17 15 14 58 D M Warming 100 2006 11 15 14 58 Print vn pus In the box Show it is possible to select what is to be shown in the list Indicate in the boxes Info Warning and Fault which type of events should be shown With Code it is possible to show certain specific events If the whole or parts of the list is to be printed this is done through the box at the lower left Click on the first line wanted in the list and press From Then click on the last line wanted in the list and press To Press Print to start printout of all these events The following events exist Code Name Action 19 Time to calibrate Time or temperature limit has been exceeded Make a new calibration 20 The door is open When the door to the x ray room is opened the safety switch turns the x ray off When this happen the system must be restarted manu ally close
34. the door first 24 Soil on photocell Clean or readjust the photocells 27 Temperature limit Check the temperature 12 Tube 1 2 Tube 2 exceeded 3 Scanner 4 Computer 28 XRay shut down X ray images indicate no x rays black image 1 Detector 1 2 Detector 2 11 Both detectors 6 11 SHARK Log Xray SYSTEMS INC 2 3 7 SETUP All settings made on the operator computer are gathered under a common menu Archive Edit View E Tools Windows H System Parameters Installation Parameters Conveyor Calc Factors Scanner Corrections Image Analysis X ray Shutdown Geometric Calibration Pixel Filter 7 1 System parameters Parameters that indicate conditions for calculation of log data Can be found under the menu Settings System parameters System Parameters Calculation Options No Calculation For test purposes it is possible to exclude all calcula tions Direct after Scanner Calculation starts as soon as the log has passed the scanner the species from SHARKLog XRay is used After Operator s Input Calculation starts after receiving the operator s species from the host system 7 12 Length Correction Top Diameter Start Calculation Stop Calculation Position Physical volume Mult factor Species Upper Limit Pine Upper Limit Spruce Resulting Species Allowed temperature interval SHARK Log Xray T CTRONIX SYSTEMS INC 2 3 Number of millim
35. y radiation With standard cali bration this value should be 4095 Minimum pixel height of the carrier image 0 576 Area along the log that is reconstructed instead of the carrier Position cm both sides of centre of carrier Maximum pixel height of the carrier image 0 576 Applies to the photocell mounted in the scanner Logical setting so that the photocell signal is active when the light curtain is shadowed i e a log is in the scanner 7 15 7 2 2 Scanner Wi Scanner Info Updated 06 11 09 11 10 Detectors Used 1 2 combined Active Area Offset detector 1 32 pixel 0 64 Offset detector 2 32 pixel 0 64 Exposure Time Integration period 20 Sub samples g Sizes and angles Angle Detector 1 Dist xray Det 1 Midpoint correction detector 1 Angle Detector 2 Dist ray Det 2 Midpoint correction detector 2 Dist between xray sources Info in saved files Voltage 60 0 Eur 14 00 m Detectors used Active Area Offset detector 1 Offset detector 2 Exposure time Integration period Sub samples 7 16 Active F More 1 Focus 04 Xray SYSTEMS INC Break Detector Calibration Time Checking Interval 23 0 Hour Temp Checking Interval 15 0 10 ps Calibration Levels Level without x rays Level with x rays Min Level with x rays Calibration Times Offset Del 2
36. ysis of the inner characteristics the log can then be classified as but log middle log or top log Log data from the Log Scanner are transmitted to a master control system for sorting log rotation etc 2 5 SHARK Log Xray T CTRONIX SYSTEMS INC 2 3 3 OPERATING SECURITY Since the radiation from the X ray tubes can cause permanent damages to humans special safety regulations have to be followed The sawmill is responsible that the system is operated in compliance with the legal regula tions X ray room The scanner is placed in a room that is carefully shielded to prevent leakage of harmful radiation The radiation levels in the immediate environment are measured at the time of the commissioning and should later be checked at regular intervals To maintain the shield any damages to the shield have to be repaired as soon as possible No dam age may be caused to the walls of the X ray room such as making holes etc Only personnel trained in local radiation protection the instructions applicable for the installation of the Log Scanner are allowed in the X ray room which should be locked during operation The radiation is immediately turned off if the door to the X ray room is opened Warning lamps A warning lamp above the scanner and one above the door to the X ray room indicate that the power to the X ray tubes is turned on 3 6 SHARK Log Xray T CTRONIX SYSTEMS INC 4 SYSTEM DESCRIPTION High Voltage High
Download Pdf Manuals
Related Search