Jiajia WIM / Blog
The Jiajia WIM blog: field notes on weighing in motion.
Short, practical writing for the people who have to specify a weighing system rather than just buy a device. We cover the measurement principle, the components of an enforcement station, and the accuracy questions that tend to get skipped in a datasheet.
01 / Articles
Writing from the lane.
Three starting points, newest first. Each one is written to be useful before a purchase order exists, not after.
Weigh-in-Motion Explained: How Trucks Are Weighed at 1–100 km/h
A buyer's walkthrough of what happens between a wheel crossing a buried plate and a gross-weight figure you can act on — and why the operating speed envelope belongs in the specification.
Read the article Overload EnforcementBuilding an Overload Enforcement Station: Sensors, ANPR and LED Signage
A weight on its own is easy to dispute. Here is how we configure the sensing, identity, display and software layers into one chain of evidence for a limit-and-overload site.
Read the article Buyer's GuideStatic vs Dynamic Weighing: Accuracy Trade-offs Nobody Explains Simply
Static and dynamic weighing are not competing on a single percentage. We set out what each method gives up, the lane conditions behind the number, and the questions worth putting to a supplier.
Read the article