Section Half Imaging Logger: User Guide
Manual Information
Author(s): | M. Hastedt |
Reviewer(s): | Crawford, Fulton, Beck |
Supervisor Approval (Name, Title, Date): |
|
Audience: | Scientists and Technical Staff |
Current Version: | Draft 11/01/08 LLP - confluence |
Revised: |
Domain: | Physics |
Analysis: | Section Half Imaging |
Contents
...
Topic
...
See page…
...
...
...
...
...
...
...
...
...
...
Introduction
The section half image logger (SHIL) takes digital images of the flat face of split cores using a line scan camera. Sediment cores are imaged as soon as possible after splitting and scraping to minimize color changes that occur through oxidation and drying. The SHIL can also be used to image the outside of a whole round hard rock section (see <<section>> for details).
...
SHIL system operation involves a number of processes, some performed only once upon initial installation, some only when lighting or camera equipment is replaced, and some on a routine basis at the beginning of each expedition or at the beginning of each batch of samples. The following procedures are covered in this manual:
- Installing and calibrating light array (see Light Installation).
- Setting black and white saturation gain levels (see Maximum Dynamic Sensor Range).
- Setting color balance
Wiki Markup
Reviewers – additionally, when you see an "Author" query like this one, it's a prompt for you to provide additional information. Please make sure you answer all of these questions; this may require some research or enlisting someone else's help. - Making camera corrections (see Routine Camera Adjustments).
- Setting track velocity (see Track Speed Example).
- Adjusting knee slope, if needed (see Procedure: Iterative Adjustment).
- Performing QA/QC to confirm camera settings (see Quality Assurance/Quality Control).
...
The laboratory technician calibrates the system when needed by adjusting camera settings and analyzing an imaged Kodak Q13 grayscale standard.
Calibration adjustments are performed using an iterative process of imaging a ruler placed crosswise on the track then counting the pixels between millimeter marks, moving the camera up or down, and repeating. See
| Wiki Markup |
|---|
*<LINK> \[Author: Where is this procedure documented?\]* |
for details on this procedure.
...
Sample and Analysis ComponentsEnsure this list is still accurate; add a column with the description for each component. (Again, this doesn't belong in the "basic" user guide.)
Analysis Code | Component | Description |
IMAGES | adapter_mag |
|
| adapter_tube |
|
| comment |
|
| compound_field_of_view |
|
| contrasting_method |
|
| dimension_horizontal |
|
| dimension_vertical |
|
| file_create_date |
|
| filename |
|
| filesize |
|
| filters |
|
| illumination_type |
|
| light_source |
|
| objective |
|
| objective_field_of_view |
|
| objective_mag |
|
| ppi |
|
| total_magnification |
|
| tube_field_of_view |
|
Uploading Data
After section is imaged, select the Ends of Material Points > Save, and Redo this sectiona virtual label with section identification will attach to the saved image while the concatenation endpoints are recorded to the LIMS.
...
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!>Need an answer to this before this manual is released for use again. |
|
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. |
Scheduled Maintenance
Frequency | Task |
|---|---|
Daily | Ensure that the color standards, ruler, and barcode imager lens are free from dust, smudges, and crumbs. |
Weekly | Using a mirror, ensure that there are no fingerprints or smudges on the camera lens. Call the imaging specialist if the lens needs cleaning. Do not attempt to clean it yourself! |
Monthly | Check socket head cap screws in the camera and lights mounting plates for looseness. |
Every Expedition |
|
Annually |
|
Standard Replacement Parts/Spares
...