How does a pressure sensitive resistor work?

How force sensitive resistor can measure pressure/force. The more of the conductive ink area get in touch with the conductive film, the lower the resistance. Therefore, the more pressure applied on the sensor, the more the layers touch the conductive film and that makes the resistance go down.

How accurate are force sensitive resistors?

FSRs are basically a resistor that changes its resistive value (in ohms Ω) depending on how much it is pressed. These sensors are fairly low cost, and easy to use but they’re rarely accurate. They also vary some from sensor to sensor perhaps 10%.

What are FSR used for?

Force Sensing Resistors (FSR) are a polymer thick film (PTF) device which exhibits a decrease in resistance with an increase in the force applied to the active surface. Its force sensitivity is optimized for use in human touch control of electronic devices.

Does a resistor have a constant resistance?

As you can based on the graph of a resistor, the resistance is constant. It does not vary when either voltage or current is changed in a circuit. When you have a 10KΩ resistor in a circuit, it will offer 10KΩ resistance in the circuit regardless of the voltage or current of the circuit.

How do force sensors work?

Generally, the working principle of force sensors is that they respond to the applied load and weight and then transforms them into a quantifiable output. An example is the pneumatic load cell which works as a force balance device. Pneumatic load cells are not Force transducers as their output is not electrical.

What is load force sensor?

A load cell is a sensor or a transducer that converts a load or force acting on it into an electronic signal. This electronic signal can be a voltage change, current change or frequency change depending on the type of load cell and circuitry used. There are many different kinds of load cells. We offer resistive load cells and capacitive load cells.