Embedded Sensing: Grip System

Quantify forces applied by the human hand while grasping objects.

Tactile Grip Force and Pressure Sensing

The Grip™ system measures and evaluates static and dynamic pressures from grasping objects. Grip measures interface pressure for the human hand and finger gripping applications to assess comfort, design, and ergonomics. The system is used to improve design for a more ergonomically sound product, study carpal tunnel and repetitive motion syndrome, or analyze the human hold on various tools and sports equipment. It is an ideal tool for collecting vital information and insight to enhance product design, manufacturing, quality, and research.

Key Features:

• Simultaneous measurement of left and right hands
• Numerous independent sensing elements for localized detection and sensing of pressure points
• One subject can grip several objects in many ways, once the hand is instrumented
• High scanning rates of up to 750Hz (tethered version)
• Paper-thin sensor form factor allows for full range of hand motion
• One size fits all
• Durable and reusable sensor

Grip Sensor - 4256E

The Grip™ System uses a thin, high-resolution sensor that can be used directly on a hand or built into a glove. Each sensor has eighteen sensing regions that can be individually positioned over important anatomic sections of the fingers and palm. Gaps between the sensing areas allow the joints to be avoided, move freely, and not interfere with grip measurement. Each sensing region has multiple sensing elements (Sensels™) for localized identification of pressure points on the hand.

Grip System Applications - Steering Wheel Ergonomics

Challenge:

To quantify key grip and movement data that enhance the driver experience.

• Design to address important ergonomic needs
• Determine the ideal placement of accessory buttons

Solution:

The Grip pressure mapping system was used to identify and measure dynamic pressures and forces on the hands and fingers while gripping, lifting, and turning the steering wheel.

• Also proved useful in vibration studies, whether driving or idling