In a screw torque module, the gripper closed status is typically indicated by a ______ sensor.

In a screw torque module, the gripper closed status is typically indicated by a ______ sensor.

• A. Ultrasonic sensor
• B. Vision sensor
• C. Capacitive sensor
• D. Inductive sensor

Answer: (D)

The main idea is to reliably detect when the metal gripper jaws are closed. An inductive proximity sensor is ideal here because it detects metal targets in close proximity without contact and provides a fast, clean on/off signal. In a screw torque module, the gripper and its jaws are metal, so when the jaws close around a workpiece, the metal target enters the sensor’s field and the sensor registers a closed status. This signal is robust to dirt, oils, and lighting conditions and is well-suited for tight, repetitive gripper actions. Ultrasonic sensors rely on distance measurement and can be affected by target shape and surface, making timing less precise. Vision sensors require clear line of sight and proper lighting, which can complicate setup. Capacitive sensors detect various materials but can be influenced by moisture and surface coatings and are less inherently robust for metal-only closure. Inductive sensing provides the most reliable indication of gripper closure in this metal-end-effector context.

The main idea is to reliably detect when the metal gripper jaws are closed. An inductive proximity sensor is ideal here because it detects metal targets in close proximity without contact and provides a fast, clean on/off signal. In a screw torque module, the gripper and its jaws are metal, so when the jaws close around a workpiece, the metal target enters the sensor’s field and the sensor registers a closed status. This signal is robust to dirt, oils, and lighting conditions and is well-suited for tight, repetitive gripper actions.

Ultrasonic sensors rely on distance measurement and can be affected by target shape and surface, making timing less precise. Vision sensors require clear line of sight and proper lighting, which can complicate setup. Capacitive sensors detect various materials but can be influenced by moisture and surface coatings and are less inherently robust for metal-only closure. Inductive sensing provides the most reliable indication of gripper closure in this metal-end-effector context.