Pdf evaluation of commercial forcesensing resistors. Forcesensing resistors fsrs exhibit the unique characteristic of dynamic resistance. Please allow small size error due to manual measurement. Force sensing resistors an overview of the technology force sensing resistors fsr are a. Force sensing resistor fsr technology from interlink electronics is the most versatile force sensing technology on the market today. In the simplest layout configuration singlezone, an fsr is a twoterminal device that can essentially be treated as a variable resistor whose. How to measure force pressure with an fsr as weve said, the fsrs resistance changes as more pressure is applied. Force sensing resistors, or fsrs, are robust polymer thick film ptf devices that exhibit a decrease in resistance with increase in force applied to the surface of the sensor. Efficient acquisition of force data in interactive shoe designs. We build an fsr based on resistive material velostat and printed. Connect the wires of fsr sensor to multimeter without applying any force on surface of the force sensing resistor the resistance will be very high. Checking the datasheet will always illuminate any differences. This forcesensing resistor fsr from interlink electronics is a passive component that exhibits a decrease in resistance when there is an increase in the force applied to.
If force is applied to its surface, then the resistance starts decreasing. The use of weights is prone to inaccuracies since it is a manual process. Evaluation of flexible force sensors for pressure monitoring. Pdf force sensing resistor and evaluation of technology. A force sensing resistor is special resistor that resistance can be varied by varying by. The product information contained in this document is. Force sensing resistor family interlink electronics. Thus, the fsr sensor can be tested using a multimeter. Sensors, transducers force sensors are in stock at digikey. Zerone force sensitive resistor, 1pc df 940 high precise force sensing resistor thin. Fsr 400 series round force sensing resistor description interlink electronics fsrtm 400 series is part of the single zone force sensing resistortm family. In the current firmware, we have set the adc to work in freerunning mode. One of the first uses of our patented thin film force sensing resistor fsr technology was in electronic drums and other musical instruments. Force sensing resistor and evaluation of technology for wearable.
What is precluding force sensing resistors fsr to be the next best seller wearable. Integration guide force sensing resistor mouser electronics. This video describes the operation of force sensing resistors and how to interface them to microcontrollers using an adc channel. Force sensing resistor how it works and its applications. When there is no pressure, the sensor looks like an infinite resistor open circuit, as the pressure increases, the resistance goes down. Detailed information about interlink electronics fsr 400 series of. Mobile phones, portable media players, navigation devices, handheld gaming, digital cameras, and other portable. As force on the sensor is increased, this resistance is decreased.
For the love of physics walter lewin may 16, 2011 duration. Force sensitive resistor df940 high accurate resistancetype thin film pressure. Pdf pressure and force touch sensors are pervasive in electronic musical instruments. This graph indicates approximately the resistance of the sensor at different force measurements. Buy products related to force sensing resistor products and see what customers say about force sensing resistor products on free delivery possible on eligible purchases.
Chiolerio, development of a flexible leadfree piezoelectric transducer for. Feel free to approach us by posting your comments, ideas, queries and. A led pressure display and a toggle switch circuit is covered. A manual wooden press has been built, and mounted onto a weighing scale. Force sensitive resistor df940 high accurate resistancetype. Force sensing resistor and evaluation of technology for wearable body pressure sensing article pdf available in journal of sensors 20163. The product information contained in this document is designed to provide general information and guidelines only and must not be. Force sensing resistors fsrs are resistive sensors exhibiting varying resistance that responds to force applied to the sensing area. This forcesensing resistor fsr from interlink electronics is a passive.
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