Youth researchYoung scientists honored
A robotic sparring partner for boxing training, the Internet of Things for the home or a camera that always shoots blur-free films thanks to motors and position sensors - the creativity of the young researchers at the 51st national finals knew no bounds. Now the winners have been announced.
Johannes Meier (18) wants to make life easier for forestry workers. To this end, he developed a measuring device for chainsaws that enables the operator to quickly and precisely cut felled trees into pieces of a specified length without the need for any other tools. All the operator has to do is move the rolling saw chain along the trunk. The distance covered is shown on a display integrated into the saw's air filter cover. This principle of measuring is known from the bicycle speedometer: Seven small magnets are attached to the circumference of the chain drive sprocket at regular intervals. The rolling chain turns the wheel and the magnets are moved past a sensor. A microcontroller then calculates the distance traveled from the magnetic pulses.