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What is the principle of the sensor?
First, we supply a + 15V power to the sensor. The crystal oscillator in the excitation circuit generates 400Hz of Fang Bo. After the power amplifier, the AC excitation power source is generated, and is transferred from the stationary primary coil to the secondary coil through the energy ring transformer. A precise DC power supply consisting of a reference power and a dual amplifier produces a precision DC power supply of + 4.5V. When the elastic shaft torsion, mV strain signal amplification into strong strain bridge detection signal 1.5V + 1V through the instrumentation amplifier, and then through the V/F converter transforms into a frequency signal through the signal from rotating ring transformer primary coil static transfer to the secondary coil, the signal processing circuit can be filtered and shaped shell the signal and frequency of bearing torque is proportional to the elastic axis, can provide two special instruments or frequency meter display can also be sent directly to the computer processing.
The above is the classification of the sensors, the main function, the principle of selection, the composition and the principle of the work. The sensor technology has a very important position in the modern science and technology, known as the three pillars of the modern information technology (sensor technology, computer technology and communication technology) is one of the development and progress of the microelectronics technology, has greatly promoted the rapid development of communication technology and computer technology, in contrast, the development of sensor technology is very slow, restricting the development of information technology, known as the bottleneck in the development of this development, uncoordinated and the negative effect of science and technology, in recent years the rapid development process is particularly prominent, and even local areas due to the lagging development of sensor technology, in turn influence and restrict the development and progress of science and technology and other relevant circumstances.