A led pressure display and a toggle switch circuit is covered. Force sensing resistors fsrs are resistive sensors exhibiting varying resistance that responds to force applied to the sensing area. This video describes the operation of force sensing resistors and how to interface them to microcontrollers using an adc channel. Force sensing resistor fsr technology from interlink electronics is the most versatile force sensing technology on the market today. Mobile phones, portable media players, navigation devices, handheld gaming, digital cameras, and other portable. Pdf pressure and force touch sensors are pervasive in electronic musical instruments.
Evaluation of flexible force sensors for pressure monitoring. What is precluding force sensing resistors fsr to be the next best seller wearable. Please allow small size error due to manual measurement. 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. We build an fsr based on resistive material velostat and printed. In the current firmware, we have set the adc to work in freerunning mode. Pdf evaluation of commercial forcesensing resistors. Feel free to approach us by posting your comments, ideas, queries and. Force sensing resistors an overview of the technology force sensing resistors fsr are a. Force sensing resistor how it works and its applications elprocus. This is a photo of an fsr, specifically the interlink 402 model. Forcesensing resistors fsrs exhibit the unique characteristic of dynamic resistance.
When there is no pressure, the sensor looks like an infinite resistor open circuit, as the pressure increases, the resistance goes down. Chiolerio, development of a flexible leadfree piezoelectric transducer for. A force sensing resistor is special resistor that resistance can be varied by varying by. 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. 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. The use of weights is prone to inaccuracies since it is a manual process. Sensors, transducers force sensors are in stock at digikey. Pdf force sensing resistor and evaluation of technology. 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. Fsr 400 series round force sensing resistor description interlink electronics fsrtm 400 series is part of the single zone force sensing resistortm family.
Checking the datasheet will always illuminate any differences. If force is applied to its surface, then the resistance starts decreasing. One of the first uses of our patented thin film force sensing resistor fsr technology was in electronic drums and other musical instruments. Force sensitive resistor df940 high accurate resistancetype. Zerone force sensitive resistor, 1pc df 940 high precise force sensing resistor thin. Force sensing resistor and evaluation of technology for wearable. 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. This forcesensing resistor fsr from interlink electronics is a passive. Force sensing resistor how it works and its applications. The product information contained in this document is.
Overview fsrs are sensors that allow you to detect physical pressure, squeezing and weight. For the love of physics walter lewin may 16, 2011 duration. Force sensing resistor family interlink electronics. As force on the sensor is increased, this resistance is decreased. A manual wooden press has been built, and mounted onto a weighing scale. Two force sensing resistors fsr have been inserted between a sandal and a. Force sensitive resistor df940 high accurate resistancetype thin film pressure. In the simplest layout configuration singlezone, an fsr is a twoterminal device that can essentially be treated as a variable resistor whose. This graph indicates approximately the resistance of the sensor at different force measurements. Detailed information about interlink electronics fsr 400 series of. Thus, the fsr sensor can be tested using a multimeter. Efficient acquisition of force data in interactive shoe designs. Integration guide force sensing resistor mouser electronics. Zerone force sensitive resistor, 1pc df 940 high precise force.
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