Vision-Based Elongation Detector
Non-contact gap measurement — replacing manual scale and vernier checks with automated, PLC-integrated elongation monitoring on every cycle.
Automated Wire Extension Verification
During PSC sleeper production, HTS wire must reach a precise elongation before casting. This device tracks reference markers on the fixed bench and moving anchor plate — converting marker movement into gap readings in millimetres without entering the tension zone.
STRESSING BENCH (TOP VIEW) LEFT SIDE RIGHT SIDE +----------------------+ +----------------------+ | [Vision Device] | | [Vision Device] | | Fixed <- gap -> Plate| | Fixed <- gap -> Plate| | (independent zone) | | (independent zone) | +----------+-----------+ +----------+-----------+ | | +------------------+-------------------+ v SINGLE STRESSING PLC (gap, fault codes, heartbeat per side)
How It Works
Each side uses two reference marker plates — one on the bench frame and one on the anchor plate — monitored by an independent vision device. Readings feed the stressing PLC for closed-loop control, interlocks, and per-cycle traceability.
Operator Safety
Keeps operators out of the high-tension hazard zone. Remote readings replace steel scale and vernier checks inside the gap.
Production Speed
Meets the 1-second plant cycle limit. Vision measurement runs continuously during stressing — no pull stop required.
Quality & Compliance
Supports IRS-T-39 clause 4.2 extension verification with repeatable sub-millimetre readings tied to sleeper drawing setpoints.