TOF photoelectric sensors are an ideal choice for such application scenarios due to their high precision, long-distance detection capability, and independence from the color and material of the workpiece. In this issue, Xiao Ming will share the unparalleled application of Meiji Sensing's photoelectric sensors in detecting welded workpieces.

Scene requirements

It is necessary to install photoelectric sensors on the robotic arm to detect the presence of pins on the welded workpiece. When pins are detected, a signal is immediately triggered to drive the welding gun on the robotic arm to perform welding work

1. The processed part is fixed by the pin (with a distance of 1 cm between the processed part and the pin), and the pin trigger signal cannot be detected by mistake

2. The position of the detected workpiece is a circular arc surface, and ordinary sensors are affected by the angle of the arc

3. The detected workpiece is black gray, and the pin is silver white. Silver white has stronger reflectivity than black gray

4. Detection distance is about 15 centimeters

solution

TOF photoelectric sensor ELT series

1. Using the TOF detection principle of a photoelectric sensor, the distance to the measured object is calculated by emitting a pulsed laser beam and measuring the time difference between the emission, reflection by the object, and return to the sensor receiving chip. The product of this time difference and the speed of light is divided by 2. In this scenario of detecting welded workpieces, the TOF sensor is set to detect a specific distance range corresponding to the position of the pin when it is present.

2. Can provide high-precision distance measurement to ensure accurate detection of the presence of pins.

3. This photoelectric sensor is not affected by the state/color of the detected object and has good detection stability

4. The photoelectric sensor comes with a teaching button, making it easy to adjust the detection distance with just one click, without the need for tedious debugging

5. Long distance detection: Compared to traditional photoelectric sensors, TOF photoelectric sensors have a longer detection distance and are suitable for welding workpieces of various sizes.