The capacitive loads on sda and scl line have to be the same. Fss020wnsr fss series low profile force sensor, 0 n to 20 n force range, tape and reel packaging fss020wnst fss series low profile force sensor, 0 n to 20 n force range, standard tube packaging. Force dependant on actuation interface, mechanics, touch location, and measurement electronics. They are also known as force sensitive resistor and are sometimes referred to by the initialism fsr wikimedia commons has media related to force. Force sensing resistors an overview of the technology. Fsr 406 sensing resistor interlink electronics digikey. Fsr 400 series datasheet interlink electronics digikey. Capable of microforce detection with high sensitivity, high precision. The product information contained in this document is designed to provide general information and guidelines only and must not be used as an implied contract with interlink electronics, inc. Flexiforce force sensors can measure force between almost any two surfaces and are durable enough to stand up to most environments. The cad files and renderings posted to this website are created, uploaded and managed by thirdparty community members. Fsr force sensing resistor sensor allow you to detect physical pressure, squeezing and weight. In general, the more force applied to the surface of the sensor, the lower the resistance. Note that force is not measured in grams and what they really mean is newtons 100.
This table indicates the approximate analog voltage based on the sensor forceresistance wa 5v. Launched in 1985, interlink electronics is the worlds leading innovator of cost effective polymeric force sensors. Mechanical specifications electrical specifications. This video demonstrates how to calibrate and visualize a force sensitive resistor fsr using the arduino uno board and matlab. This video describes the operation of force sensing resistors and how to interface them to microcontrollers using an adc channel. Sensor overallsensorseries datasheet search, datasheets, datasheet. Force sensing resistors can be designed as singlepoint force sensors, or in a matrix array form, allowing the user to capture pressure distribution over a given area. Force sensor hokuriku ce specifications are subject to change without noti. The product information contained in this document is designed to provide general information and guidelines only and must not be. Fsr 400 series square force sensing resistor description interlink electronics fsrtm 400 series is part of the single zone force sensing resistortm family. This sensor is a interlink model 402 fsr with 12 diameter sensing region.
Download copies of our datasheets for all of our standard products. A force sensing resistor is a material whose resistance changes when a force, pressure or mechanical stress is applied. The 4zone force sensing resistor fsr paired with a suitable actuator can be implemented as a fingeractuated mouse pointing module. Connect the wires of the fsr sensor to multimeter without applying any force on the surface of the force sensing resistor the resistance will be very high. Our sensors are available offtheshelf for prototyping or can be customized to meet the specific needs of your product design and application requirements. This graph indicates approximately the resistance of the sensor at different force measurements. Of course the force will change dramatically during the stride or activity, but the force sensor will only measure whatever portion is actually applied to the sensing area. Examples of different force sensitive resistor technologies. For those looking for a way to make a more secure connection without soldering, try looking at the associated amphenol pin adapters. Please see the datasheet 1mb pdf for more information, including force vsresistance curves, integration notes, usage tips, and suggested electrical circuits. Force sensitive resistor products sparkfun electronics. How to use a force sensitive resistor arduino tutorial. Today, with over 20 years of industryleading experience, interlink electronics continues to.
Force sensing resistor can be defined as a special type of resistor whose resistance can be varied by varying the force or pressure applied to it. As an example, well measure the force on the resistor using an arduino uno and a simple voltage divider circuit. So you should see a value between 0 and 1023 in the serial monitor, depending on how hard you squeeze the sensor. High durability, life cycle 1 million cycles or more outline dimension 3 unit specification rating. The fsr sensors are made of conductive polymer which has a property of changing its resistance based on the force. Force sensitive resistor fsr created by lady ada last updated on 20180822 03. Conversely, the sensitivity can be increased for measurement of lower forces by increasing v t or r f. Round forcesensitive resistor fsr interlink 402 id. Force sensing resistors fsrs are a type of resistor whose resistance changes when a force or pressure is applied. Heres a fritzing diagram combining the interlink fsr, 3. A led pressure display and a toggle switch circuit is covered. Tekscans fsr sensor, the flexiforce sensor, is a paperthin, flexible sensor which solves a number of important load sensing issues for test and design engineers, including.
Apr 24, 2020 how to measure force pressure with an fsr as weve said, the fsrs resistance changes as more pressure is applied. These innovative sensors provide an inverse change in resistance in response to an increasedecrease in applied force. This force sensing 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 the 1. The grabcad library offers millions of free cad designs, cad files, and 3d models. Datasheet search engine for electronic components and semiconductors. One of the first uses of our patented thin film force sensing resistor fsr. Checking the datasheet will always illuminate any differences.
This ohmite resistor series includes a pigtail extending on one end with an industrystandard connector. Interlink electronics fsr 400 series is part of the single zone force sensing resistor family. 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 the 1. Force sensing resistor how it works and its applications. Jan 11, 2017 this video describes the operation of force sensing resistors and how to interface them to microcontrollers using an adc channel. This is a force sensitive resistor with a round, 0. Please follow the instructions below to calibrate your sensor and to convert the acquired data. This table indicates the approximate analog voltage. The technology of force sensing resistors was invented and patented in 1977 by franklin eventoff. Force sensitive resistor adapter while the fsr terminals are breadboardcompatible, weve found that it may be loose in the breadboard.
This means that it will map the input voltage between 0 and 5 v into integer values between 0 and 1023. The modules use force sensing resistor technology and measurement firmware in a fourzone sensor or 4wire resistive touchpad configuration along with a microcontroller to provide pressuresensitive cursor direction and speed control in a durable and easytointegrate form factor. Resistance accuracy varies by sensor model, but is generally limited to a ballpark figure around. Force sensitive resistor fsr sensor data sheet biosignals plux.
Overview force sensitive resistor fsr adafruit learning. The product information contained in this document is. This graph indicates approximately the resistance of the sensor at different force. A low cost force sensing resistor tailor made for the grasper tip was designed and fabricated for quantifying the. Checking the datasheet will always illuminate any differences how to measure force. Novel applications of force sensing resistors in healthcare technologies.
They are fully calibrated and temperature compensated for sensor offset, sensitivity. Thus, the fsr sensor can be tested using a multimeter. Many force measurement applications call for an fsr force sensitive resistor that is ultrathin, accurate, costeffective, and customizable. Fsr01ce datasheet12 pages ohmite force sensing resistor.
This content and associated text is in no way sponsored by or affiliated with any. The force range can be extended by reducing the drive voltage, v t, or the resistance value of the feedback resistor, r f. The recommended pullup resistor value depends on the system setup capacitance of the circuit or cable and bus clock frequency. In this example you will be using the fsr sensor as a toggle switch. It is important to avoid asymmetric capacitive loads. Fsr is basically a resistor that changes its resistive value in ohms. This forcesensing resistor fsr from interlink electronics is a passive component that exhibits a decrease in resistance. Fsrs are also known as pressure sensing, force sensitive resistors, etc. Force sensing resistor matrices are commonly referred as pressure mapping technology. The ohmite fsr series exhibits the unique characteristic of dynamic resistance related to the amount of applied force. Pdf novel applications of force sensing resistors in.
Forcesensing linear potentiometers fslps from interlink electronics are passive components with resistances that depend on the magnitude and location of the force applied to the strip, making it easy to add novel touch interfaces or tactile sensors to your project. You can use this program to control all kinds of other functions, in this case to switch on and off an led. Sparkfun sensor kit out of stock dev16156 with everything included in this sensor kit, youll be able to sense gesture, humidity, temperature, motion, touch, sound, al. 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. This force sensing resistor fsr from interlink electronics is a passive component that acts as a variable resistor, with resistance decreasing in response to increasing applied force, which makes. Sensor overallsensorseries datasheet search, datasheets, datasheet search site for electronic components and semiconductors, integrated circuits, diodes and other semiconductors. Matlab arduino tutorial 16 force sensitive resistor fsr. In an electrical circuit, this sensor will act as a variable resistor, where the change in resistance is inversely proportional to the force applied. Force sensing resistors are also known as force sensitive resistors or force sensors.
As force on the sensor is increased, this resistance is decreased. Checking the datasheet will always illuminate any differences how to measure force pressure with an fsr. They are fully calibrated and temperature compensated for sensor. Force sensitive resistor fsr sensor data sheet fsr 01022018 page 2 of 3 transfer function the sensor requires frequent calibrations to provide reliable measurement, a constant transfer function does therefore not exist. Choose the sensor that best fits the geometry of your application. Standard and custom force sensitive resistors tekscan. In the simplest layout configuration singlezone, an fsr is a twoterminal device that can essentially be treated as a variable resistor whose value is controlled by applied force. Sen09376 force sensing resistor 3d cad model library. Please follow the instructions below to calibrate your sensor. Fsr 400 series round force sensing resistor description interlink electronics fsrtm 400 series is part of the single zone force sensing resistortm family. Fsrs are sensors that allow you to detect physical pressure, squeezing and weight. Join the grabcad community today to gain access and download. This content and associated text is in no way sponsored by or affiliated with any company, organization, or realworld good that it may purport to portray.
The transistor q1 is chosen to match the required current specification for the relay. The resistance is inversely proprotional to the force applied, i. Fsr resistors include square, circle, and strip designs with adhesive backing for easy attachment. Force accuracy ranges from 5% to 25% depending on a number of factors, and the resolution is better than 0. Force sensing resistors fsrs are resistive sensors exhibiting varying. Acknowledging our policy of continual product development, we reserve the right to change, without notice, and detail in this publication. You will have to add a led with a resistor to the circuit, which is shown in the diagram below. When there is no pressure, the sensor looks like an infinite resistor open circuit, as the pressure increases, the resistance goes down. Datasheet force sensors fsa series, compensatedamplified description the fsa series are piezoresistivebased force sensors offering a ratiometric analog or digital output for reading force over the specified full scale force span and temperature range. In an electrical circuit, this sensor will act as a variable resistor, where the change in resistance is inversely proportional to the force. These stats are specifically for the interlink 402, but nearly all fsrs will be similar. Just fill out the form and browse for the specific information you want. Specifications are derived from measurements taken at grams, and are.
They are also known as force sensitive resistor and are sometimes referred to by the initialism fsr. These sensors are fairly low cost and easy to use but theyre rarely accurate. 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. Using a force sensing resistor fsr as a toggle switch. A force sensing resistor fsr is a variable resistor, constructed of several thin flexible layers, that varies in resistance as pressure is applied and released. Fsr features a special thick film formulation printed and adhered to a flexible substrate. This fsr will vary its resistance depending on how much pressure is being applied to the sensing area. If force is applied to its surface, then the resistance starts decreasing. Sen09376 force sensing resistor 3d cad model library grabcad. The fsr sensor is not a strain gauge, load cell or pressure transducer. Force sensing resistor fsr arduino tutorial 3 examples.
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