It can feel how much weight or pressure is being applied on them thanks to force sensing resistors which are special materials that can do this. They can be found in everything from toys and phones to medical devices. In this lesson we will learn about force sensing resistors, how they work, and where we can find them in the world around us. Let’s get started!
Typically, FSRs are pressure-sensitive materials that exhibit changes in electrical resistance with applied pressure. That behavior means that when you push on a force sensing resistor, it changes how easily electricity can pass through it. These materials are filled with tiny particles that move closer together or farther apart in response to how much pressure is exerted.
Force sensing resistors use these small particles to determine just how much force is being exerted. But when you press down, the particles come closer together, altering the resistance of the material. This change can be measured by an electronic device, such as a computer or phone, to ascertain how much force is being exerted. This information can be used to control things such as the volume on your phone or the speed of a toy car.
Force sensing resistors are used in various devices for easier and fun usage. For instance, they come in touch screens that allow it to be responsive to light touches. They’re also put into joysticks and game controllers to make them operate better. You can also find force sensing resistors in smartwatches and health and fitness wearables, where they help measure things like your heart rate or how many steps you’re taking.
Force sensing resistors are extremely useful in medical devices because they provide doctors and nurses crucial data about a patient’s health. They can also be applied in dedicated bandages to monitor wounds and signal health workers if something changes. They might also be harnessed in prosthetic limbs, making it easier for users to control the devices. And there are pressure of blood pressure monitors that are looking at how hard your heart is pushing.
The future will see better force sensing resister technology being used even in more ways. Developers are working to make them more sensitive and precise for use in new medical devices. They also want to find molecules that make the materials stronger and last longer in use, and applicable in a wide range of uses. Force sensing resistors are an exciting technology that will continue to play an important role in our day to day interactions.
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