...
Author(s): | M. Hastedt | |
Reviewer(s): | Crawford, Fulton, Beck | |
Supervisor Approval (Name, Title, Date): |
| |
Audience: | Scientists and Technical Staff | |
Current Version: | V383P | Draft 11/01/08 LLP | |
Revised: | Draft 6/17/2019 | |
Domain: | Physics | |
Analysis: | Section Half Imaging |
...
Software
Operates with LabVIEW 10.0 2017 application.
Maintenance
Before taking images make sure the lights and camera are calibrated properly. See section Light Array Setup and Camera Calibration for instructions on procedures.
...
- Barcode (most common): Put cursor in the 'Scan' box. Use the bar-code scanner to scan the label on the end-cap. The sample information will parse into the 'Sample ID', 'LIMS ID', and Length fields.
- LIMS Entry: Select the 'LIMS' tab at the top of the window. Navigate through the hierarchy to select the correct, expedition, site, hole, core, and section. Length information will automatically populate when the section is selected.
- Manual Entry: Select the 'Manual' tab at the top of the window. Click in the box and manually type sample information into the box.
By default the instrument is set for imaging the archive half and will not allow you to scan a working label. If you want to take a picture of a working half you need to go to the MANUAL tag and select W (working) into the Section Half label (See the picture bellow). Once you have selected the W (working), you will not be able to scan an archive half; in order to do that you need to go back into the MANUAL tag and re-select A (archive).
5. Click Take a Picture. The lights will turn on and start moving down the length of the core. In the IMS interface the sample information will go away revealing the measurement windows. The image and RGB data is displayed and updates as the measurement progresses.
...
Sample and Analysis Components
| Analysis | Component | Definition |
|---|---|---|
LSIMG (Core Section) | Exp | expedition number |
| Site | site number | |
| Hole | hole number | |
| Core | core number | |
| Type | type indicates the coring tool used to recover the core (typical types are F, H, R, X) | |
| Sect | section number | |
| A/W | archive (A) or working (W) section half | |
| Top Depth CSF-A (m) | location of the upper edge of the section expressed relative to the top of the hole. | |
| Bottom Depth CSF-A (m) | location of the lower edge of the section expressed relative to the top of the hole. | |
| Top Depth (other) (m) | location of the upper edge of the section expressed relative to the top of the hole. The location is presented in a scale selected by the science party or the report user. | |
| Bottom depth (other) (m) | location of the lower edge of the section expressed relative to the top of the hole. The location is presented in a scale selected by the science party or the report user. | |
| Display Status (T/F) | "T" (true) indicates that this image has been selected as the core section image to display in core descriptions and core composites. "F" (false) indicates that this image will not be displayed. (All images prior to Expedition 349 are designated as display images.) | |
| Uncropped image (JPG) link | link to URL of JPG version of core section image that shows the ruler and external space at the top and bottom of the section. | |
| Uncropped image filename | filename of uncropped image provided for identification purposes. | |
| Cropped image (JPG) link | link to URL of JPG version of core section image with the ruler and external space at the top and bottom of the section cropped. | |
| Cropped image filename | filename of cropped image provided for identification purposes. | |
| Timestamp (UTC) | point in time at which an observation or set of observations were made. Precise meaning of the value varies between systems due to variation in capability and/or implementation. | |
| Instrument | line-scan camera (e.g., JAICV107CL). | |
| Instrument group | Section Half Imaging Logger (SHIL). | |
| Text ID | automatically generated unique database identifier for a sample, visible on printed labels. | |
| Test No | Unique number associated with the instrument measurement steps that produced these data. | |
| Comments | observer's notes about the sample. |
| Analysis | Component | Definition |
|---|---|---|
| RGB Channels (RGB) | Exp | expedition number |
| Site | site number | |
| Hole | hole number | |
| Core | core number | |
| Type | type indicates the coring tool used to recover the core (typical types are F, H, R, X). | |
| Sect | section number | |
| A/W | archive (A) or working (W) section half. | |
| Offset (cm) | position of the observation made, measured relative to the top of a section. | |
| Depth CSF-A (m) | location of the observation expressed relative to the top of a hole. | |
| Depth (other) (m) | location of the observation expressed relative to the top of a hole. The location is presented in a scale selected by the science party or the report user. | |
| R | average of digitized red (R) channel over a user-defined rectangle along the core section. Values range from 0 to 255 (8-bit color digitization). | |
| G | average of digitized green (G) channel over a user-defined rectangle along the core section. Values range from 0 to 255 (8-bit color digitization). | |
| B | average of digitized blue (B) channel over a user-defined rectangle along the core section. Values range from 0 to 255 (8-bit color digitization). | |
| Timestamp (UTC) | point in time at which an observation or set of observations was made on the logger. | |
| Instrument | line-scan camera (e.g., JAICV107CL). | |
| Instrument Group | Section Half Imaging Logger (SHIL). | |
| Text ID | automatically generated unique database identifier for a sample, visible on printed labels. | |
| Test No | Unique number associated with the instrument measurement steps that produced these data. | |
| Comments | observer's notes about a measurement, the sample, or the measurement process. |
Troubleshooting
Common problems encountered when using the core imager and their possible causes and solutions:
Issue | Possible Causes | Solution |
Actuator squeal | NA | Lightly tap the actuator housing to silence the noise |
Image too dark | Manual F-stop on the camera closed down | Have technician adjust F-stop aperture |
Exposure time is too low | Increase exposure time | |
Focused lights are not aimed at the correct spot | Adjust lights | |
Track is “stuck” | Run was aborted with the software abort switch | Reset software and run sample again |
Run was aborted with the hardware abort switch | Reset hardware and run sample again | |
Gantry flag has tripped the end-of-travel limit switch | Adjust gantry flag and run sample again | |
Current limit on motors was exceeded | Check the Galil AMP-19520 for LED error indicators. Call track technician or ET to reset the motor controller | |
Torque limit on motors was exceeded. <we need to check how Labview handles this!>[djh1] | ||
Image indicates that camera was triggered erratically OR no image acquired | Camera was left in Free Run mode in MAX | Set camera to Externally Triggered for normal operation |
Linear encoder head has failed | Call an ET to verify/repair | |
Lens cap is on | Remove cap and repeat image capture procedure. |
...