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`Resources > Technical Information > Introduction to Force Sensors
`
`INTRODUCTION TO PIEZOELECTRIC FORCE
`SENSORS
`
` Introduction to Piezoelectric Force Sensors
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`Quartz Force Sensors are recommended for dynamic force applications. They are not used as 'load cells' for
`static applications. Measurements of dynamic oscillating forces, impactor high speed compression/tension
`under varying conditions may require sensors with special capabilities. Fast response, ruggedness, stiffness
`comparable to solid steel, extended ranges and the ability to also measure quasi-static forces are standard
`features associated with PCB quartz force sensors.
`
`The following information presents some of the design and operating characteristics of PCB force sensors to
`help you better understand how they function, which in turn, will "help you make better dynamic
`measurements".
`
`Figure 1 illustrates the cross-section of a typical quartz force sensor. This particular sensor is a General
`Purpose 208 Series compression/tension model with built-in electronics.
`
`Samsung Electronics Co. Ltd. et al v. Neodron Ltd
`Exhibit 2007
`IPR2020-00308
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`U.S. 1-800-828-8840
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`Figure 1: Compression-Tension-Impact Series 208
`When force is applied to this sensor, the quartz crystals generate an electrostatic charge proportional to the
`input force. This output is collected on the electrodes sandwiched between the crystals and is then either
`routed directly to an external charge amplifier or converted to a low impedance voltage signal within the
`sensor. Both these modes of operation will be examined in the following sections.
`
` Conventional Charge Output Sensors
`
` ICP® Low Impedance Quartz Force Sensors
`
` Polarity
`
` Why Only Dynamic Force Can Be Measured With Piezoelectric Force Sensors
`
` Discharge Time Constant (DTC)
`
` DTC Charge Mode System
`
` Low Frequency Response of ICP Systems
`
` DTC in ICP Force Sensors
`
` Signal Conditioner & Readout Time Constants
`
` Long Duration Events and DTC
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`Samsung Electronics Co. Ltd. et al v. Neodron Ltd
`Exhibit 2007
`IPR2020-00308
`
`
`
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` Force Sensor Natural Frequency
`U.S. 1-800-828-8840
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`SHOP FORCE SENSORS
`
` Installation
`
` Preloading Force Rings
`
` Typical Piezoelectric System Output
`
` Repetitive Pulse Applications
`
` Calibration of Force Sensors
`
`Technical Information
`
`General Piezoelectric Theory
`
`General Signal Conditioning Guide
`
`MEMS Accelerometers
`
`TEDS
`
`Mounting
`
`Charge Mode
`
`Introduction to Pressure Sensors
`
`Introduction to Force Sensors
`
`Introduction to Accelerometers
`
`Introduction to Industrial Accelerometers
`
`Introduction to Impact Hammers
`
`Signal Conditioning Basics
`
`Driving Long Cables
`
`Fastener Basics
`
`Samsung Electronics Co. Ltd. et al v. Neodron Ltd
`Exhibit 2007
`IPR2020-00308
`
`
`
`
`
`U.S. 1-800-828-8840
`ABOUT PCB
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`PCB manufactures sensors used by design engineers and predictive maintenance professionals to
`®
`test and measure vibration, pressure, force, acoustics, load, and shock in research and development
`as well as industrial applications.
`
`CONTACT
`
`3425 Walden Avenue
`Depew, NY 14043-2495 USA
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`info@pcb.com
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`800.828.8840
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`Sensorline
`SM
`716.684.0001
`
`716.684.0987
`
`COMPANIES
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`PCB Group, Inc. was acquired by MTS Systems Corporation in July 2016.
`
`Samsung Electronics Co. Ltd. et al v. Neodron Ltd
`Exhibit 2007
`IPR2020-00308
`
`
`
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`U.S. 1-800-828-8840
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`Absolute, Non-Contact Position and Level Sensors
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`© 2020 PCB Piezotronics, Inc. In the interest of constant product improvement, specifications are subject to change without notice.
`PCB , ICP , Swiveler , Modally Tuned , and IMI
` with associated logo are registered trademarks of PCB Piezotronics, Inc. in the
`®
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`Samsung Electronics Co. Ltd. et al v. Neodron Ltd
`Exhibit 2007
`IPR2020-00308
`
`
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`United States. ICP is a registered trademark of PCB Piezotronics Europe GmbH in Germany and other countries. SensorLineSM is a
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`Samsung Electronics Co. Ltd. et al v. Neodron Ltd
`Exhibit 2007
`IPR2020-00308
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