2.1 KiB
2.1 KiB
Switch Inspection Diagram (wissel_GW)
Source
06_Figuren_plaatjes/PDF/Plaatje wissel_GW.pdf
A reference diagram used by the Duimstok inspection app to guide the user through photographing a railway switch (Dutch: wissel). The GW suffix refers to the switch type.
Purpose
The diagram acts as an interactive photo-capture template. During an inspection, the user is expected to supply a photograph for each labeled camera position. The blue underlined labels in the PDF are hyperlinks — in the app they map to photo-upload slots.
Layout
Top-down schematic of a single switch, split lengthwise into three color-coded zones:
| Zone | Color | Dutch label | Description |
|---|---|---|---|
| 1 | Green | Puntstukgedeelte | Frog / crossing section — where the two rails converge |
| 2 | Turquoise | Middengedeelte | Middle section — closure rails between frog and points |
| 3 | Red | Tongbeweging | Switch-blade / point-motor section — contains the actuator mechanism |
Camera positions
Eight eye/camera icons surround the switch, each tied to a photo slot:
- Longitudinal (4×) — "Overzichtsfoto" (overview photo) at the top-left, top-right, bottom-left, and bottom-right, taken along the track direction.
- Transverse (6×) — "Foto" (detail photo) on the left and right of each of the three zones, taken perpendicular to the track.
Total: 10 photo slots per switch inspection (4 overviews + 6 details).
Usage in the app
- Render the diagram as the visual index on the switch-inspection screen.
- Each hyperlink label corresponds to a photo slot in the inspection record.
- Slot identifiers should encode both position (top/bottom/left/right) and zone (frog/middle/blade) so the stored photos can be reassembled into the correct diagram positions in the report.
Notes
- The diagram is language-dependent (Dutch labels). Any translation must preserve the zone semantics, not just the words.
- The actuator (two cylindrical elements at the bottom of the red zone) is drawn in place — detail photos of the Tongbeweging zone should capture this mechanism.