STEM与日常科技·英语30篇（9）

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图书馆自助借还机如何在扫描前识别破损图书

Before scanning the barcode, infrared cameras scan the book’s spine and cover edges for tears or bends.
A tiny vibration sensor inside the cradle detects unusual stiffness or warping in the binding.
If the system notices glue separation or missing corners, it displays a polite message on screen.
You can still check out the book, but staff receive an automatic alert to review it later.
The machine adjusts pressure gently on older paperbacks to avoid further damage during handling.
Its software compares each scan against a digital archive of known edition features and wear patterns.
Children’s board books trigger different sensitivity thresholds than paperback novels.
Even smudges or water stains get flagged by color-mapping algorithms trained on thousands of samples.
No librarian needs to intervene unless the issue affects readability or safety.
You hear a soft tone and see green confirmation lights when the book passes all checks.