Differences between fiber sensors and edge‑correction sensors

Fiber sensors and edge‑correction (alignment) sensors serve different functions. This article explains their principles, advantages, disadvantages, and application differences.

1. Fiber sensors

Fiber sensors transmit signals via optical fiber and convert measured physical quantities (pressure, temperature, displacement) into optical signals. They offer long transmission distance, strong anti‑interference, and high precision. Pressure sensing is a common fiber sensor application.

Fiber sensors achieve high precision and are immune to electromagnetic interference since they do not require electrical cabling. They are reliable and have no mechanical contact that causes wear.

2. Edge‑correction sensors

Edge‑correction sensors detect object offset and provide feedback to correct position using actuators like motors or hydraulic cylinders. They are fast, stable, and suitable for real‑time control.

3. Key differences

1. Principle: Fiber sensors measure light intensity or phase to determine physical quantities; edge‑correction sensors measure position, velocity, and acceleration for correction.

2. Measurement target: Fiber sensors measure displacement, deformation, presence, etc.; edge‑correction sensors focus on position and direction control.

3. Accuracy and stability: Fiber sensors deliver very high and stable precision (micron level). Edge‑correction sensors provide high position accuracy but may be affected by vibration or inertia.

4. Environment: Fiber sensors work well in electromagnetic interference environments and are durable; edge‑correction sensors may require more stable conditions depending on inertial components.