Windshield Wiper Pressure Mapping

Utilising a tactile pressure sensor, the Wiper™ System measures wiper blade to windshield interface force profiles under various testing conditions.

The Wiper system measures the force distribution along the entire length of the blade at different positions on the windshield, providing important insights to improve design. It is used as a research and development tool to improve blade and wiper system performance under different conditions such as “lift-off.”

Windshield Wiper Pressure Mapping

Key Features:

  • Map the force distribution along the wiper blade
  • Access real-time or recorded data
  • Dynamic measurement for “lift-off” testing
  • Collects and consolidates static measurements at different angles to capture the full wiper cycle
  • Graphic and analysis capabilities

Wiper System Components

Key Features:

  • Tactile pressure sensor – model 9920

  • Evolution™ Handle – (data acquisition electronics) connects to the sensor to gather data, process it, and send it to the PC via USB connection.
  • PB5E equilibration device – the equilibration process compensates for any variation or uneven output across individual sensing elements caused by manufacturing or repeated use of the sensor.
  • Wiper™ Software CD

Wiper Blade Sensor – 9920

Key Features:

  • Minimally intrusive, flexible, thin-film sensor

  • Specifically designed for use with wiper blades
  • Durable and reusable
  • Thin & incompressible – dimensional stability is key for repeatable measurements

Wiper System Software

Tekscan Wiper NEW_1

Force output measured: wiper blade at 30° angle on windshield – Output displayed graphically: Force vs. Distance across sensor rows

Key Features:

– Access real-time or recorded data in 2D & 3D

– Correlates pressure data to the angular position of the wiper blade

– Key metrics: total force, peak pressures, and centre of force

– Multiple graph options to plot data

– View and compare multiple test results simultaneously

– Ability to attach a digital image to each frame of a Tekscan movie

– Export data to ASCII or AVI files

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