PULSE FORMER FROM SIGNALS OF ROTATION SPEED INDUCTION SENSORS Russian patent published in 2018 - IPC H03K5/00 

FIELD: measuring equipment.

SUBSTANCE: pulse former from signals of rotation speed induction sensors containing a comparator, a low-pass filter (LPF), an analogue-to-digital converter (ADC) and a central processing unit (CPU), the outputs of the induction sensor are connected to the filter inputs, the filter output is connected to the ADC input and the first input of the comparator, the ADC output is connected to the CPU, and the comparator, ADC and CPU are built-in components of the microcontroller, a reference voltage source, a timer and a pulse generator are additionally introduced, wherein the second output of the LPF is connected to the second input of the comparator, the output of the reference voltage source is connected to the second output of the LPF, the comparator output and the timer output are connected to the CPU inputs, the CPU outputs are connected to the control inputs of the comparator, timer and pulse generator, the generator output is connected to the LPF, and the timer and the pulse generator are built-in components of the microcontroller.

EFFECT: providing high accuracy of measuring the input signal frequency in the presence of various types of interference and simplifying the circuit.

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