Force Sensor 501c (Medium), Pressure Sensor, Flex Sensor
Non-returnable
BD 8.000
The TPE-501 is a long tail version of the TPE-500 high-performance Shunt Mode Force Sensing Resistor (FSR). The TPE-501 features the same 8mm diameter sensing zone with a total length of 38mm (excluding the housing).
Force-Sensing Resistors (FSRs) exhibit the unique characteristic of dynamic resistance related to the amount of applied force. In general, the more force applied to the surface of the sensor, the lower the resistance. The resistance change is inversely proportional to the applied force (Figure 1). Typical force-sensing resistors are characterized for HumanMachine Interface (HMI) or Machine-Machine Interface (MMI) applications with a sensing range from circa 20g to 5Kg. Specific device characteristics will depend on the size, shape and materials used in construction. Force-sensing resistors are intended for applications where a delta in applied force is to be detected. They are not intended for high accuracy or specific weight measurement applications 1.1 FSR Explained In an FSR sensor there are 3 di erent mechanisms in e ect which together form the force resistance characteristics. Each of these mechanisms add together and merge to create the total response curve of a typical FSR and each mechanism has di erent dependencies on sensor construction, mechanical integration and the electrical properties of the ink. Break force This is the force required for the 2 membrane layers to contact. In this region the resistance is infinite until enough force is applied to make contact. Area E ect In this region the size of the contact area between the two layers is increasing with increasing force and thereby reducing the resistance. Surface E ect In this region as the force is increased the contact of the two ink surfaces increases at a microscopic level.
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