Below we explain the working principle of the pull down force testing machine digital sensor.
Tensile testing machine digital sensors use several different working principles. The most common are optical or electromagnetic sensors. The exact type of application depends on the application itself, the accuracy requirements, and environmental factors such as temperature and pollution level.
1, the main types
Rotary encoder, linear displacement sensor.
2, reference
Basically, digital incremental sensors are relative measuring systems; in other words, people do not know the absolute position of the measuring head at the start of the measurement. In order to accurately determine the absolute position of the measuring head, most measuring systems have a reference. Rotary encoders have one reference per revolution, while linear sensors usually have one or more reference references.
3, supply voltage
In industry, the most commonly used is the 5V supply voltage. Of course, variable supply voltages, such as between 11V and 32V, are also common. The advantage of this type of sensor is that it can be directly connected to the power supply of the vehicle.
4, the principle of signal transmission
The measuring head with three sensors moves linearly along the bar code. These bar code excitation sensors generate signals.
5, signal waveform
Sinusoidal and Rectangular Waves—A common simple sensor generally produces rectangular waveforms; however, high-grade digital incremental sensors often use sinusoidal waveforms. Some sensors also have an analog multiplier; in this mode, the signal output is the number of square-wave pulses in each sine cycle (the number of pulses depends on the ratio).
