Universal Robots – a classification of tactile sensors for industrial robots

Create Date: 2024-8-30 12:03:23|Source: Universal Robots/UR

1. Optical tactile sensor

There are two types of optical tactile sensors: inside and outside. In this type, the intensity of the light is adjusted by moving the obstacle to the light path. It has the advantage of being immune to electromagnetic interference and has a high resolution. Low wiring is required and the electronics can be kept away from the sensor.

2. Piezoelectric tactile sensor

When pressure is applied to the sensor element, the voltage effect on the sensor element is piezoelectric. The generation of voltage is directly proportional to the pressure applied. In this case, no external sensor is required. The advantages of such sensors are durability and a wide dynamic range. Pressure can be measured.

3. Resistive tactile sensor

The operation of the sensor is based on the change in resistance between the conductor polymer and the electrode. This type of tactile sensor is widely used. When pressure is applied, the resistance of the conductive material changes. The resistance is then measured. The sensor has the advantages of high durability and good overload tolerance.

4. Capacitive tactile sensor

The change in capacitance between the two electrodes is used for capacitive sensors. This type of capacitive sensor will measure the capacitance and change in response to the applied pressure. The capacitance of a parallel plate capacitor is related to the spacing and area of the plates. Capacitors vary depending on the load. The sensor has the advantage of a linear response and a wide dynamic range.

5. Magnetic tactile sensor

Magnetotactile sensors use two methods, one is to measure the change in magnetic flux density, and the other is to change the deformation of the magnetic coupling between the windings. The sensor has the advantages of high sensitivity and no mechanical hysteresis.

Universal Robots – a classification of tactile sensors for industrial robots

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