Piezo Sensor - Solid State Switches0 pages

Piezo Film Solid State Switches
Piezo SW100 Rev 1 www.meas-spec.com 05/12/2009
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Impact and Momentary Switch
Digital Output – contact closure
Robust
Solderable
Piezo Film Technology
The SW100 is an ideal configuration for impact detection
and momentary switch applications. A direct contact force on
the top of the stainless steel cantilever beam of the SW100
induces strain on the laminated Piezo Film Sensor (PFS)
element. With dynamic strain the PFS element generates an
output that activated a built-in, normally open circuit. Once
activated, the circuit resembles the closure of a contact switch
but without the inherent discontinuity that contact point exhibit
because of corrosion, pitting and bouncing.
Thus, the SW100 provides a single digital pulse that is ideal
for triggering digital circuits and signal processing. The
imperviousness, elasticity and reliability of the PFS element,
along with the noise rejection characteristics of the circuit,
combine to provide the SW100 with features that suit
applications demanding consistent, reliable performance
throughout tens of millions of switching cycles.
FEATURES
• Digital Output
• No Adjustments Required During Installation
• Impervious to Moisture, Dust and Smoke
• Virtually No Maintenance Required
• Long Lifetime, Greater than 10 Million Cycles
• Low Profile
• PCB and Beam Customization to Fit Application
APPLICATIONS
• Foot Pedal / Door Closure Switch
• Counter of Units in Assembly Line Processes
• Panel Switch
• Toothed Gear Counter
• Impact Detection and Counter for Machine-
Dispensed Products
• Games and Toys for Impact Detection and
Counting
dimensions