SU119692A1 - The method of removing the curves of the probability distribution laws of random variables given by electrical voltages - Google Patents

Description

The subject matter of the invention is a method of removing the curves characterizing the laws of probability distribution of random variables given by electrical voltages.

This method aims to reduce the curves characterizing the laws of the distribution of random variables in the integral and differential forms, and its essence is that changes in the amplitude of the input voltages are transformed into changes in the width of the pulses, proportional to the input signal magnitude, followed by checking the coincidence of the shifted pulse with the comparison pulse, with the output of the pulses directed to the recalculated device.

This method is implemented in a device whose principle of operation is based on the transformation of amplitude changes of the electrical process under study into time-using the pulse-width modulation (PWM) with the subsequent implementation of phase-pulse modulation (FIM). The device uses a compensation method to set the voltage level (threshold) that characterizes a random process.

The device includes the following units: a calibration unit with input devices, a pulse-width modulator, a phase-emulsion modulator, a pulsed block of the differential law channel, a block for the formation of a coincident gating pulse, a circuit for forming of an impulse channel coincident, a pulse coincident circuit channel of the integral law, pulse control unit of coincidence. In the calibration block, the threshold voltage of the test voltage is set. The selection of the threshold value in the device is performed by the compensation method — by setting the FIM pulse to the selected threshold and comparing it with the gate pulse.

No. 119692

A pulse width modulator converts changes in the amplitude of the input voltage and changes in the pulse width. The phase pulse modulator turns them into phase changes of the pulses. At the output of the phase-impulse modulator, short pulses of positive polarity are obtained, the position of which varies relative to the starting pulses of the device, depending on the magnitude of the input voltage under study.

In the gating pulse shaping unit, a gating pulse is generated, the phase of which is proportional to the set value of the calibration threshold of the voltage under investigation. At the output of the block, short pulses are received, which are fed to the pulsed coincidence block of the differential law and the pulse matching circuit of the integral law.

In the pulse shaping circuit of the integral law channel, pulses are emitted that exceed the set threshold, for which the trigger circuit, triggered by a gating pulse, is used.

Disruption of the trigger oscillations is performed by triggering the instrument.

At the output of the coincidence channel pulses of the integral law, short pulses are also received which are fed to the recalculated device for counting their number.

Subject invention

The method of removing curves that characterize the laws of probability distribution of random variables given by electrical voltages, characterized in that, in order to remove curves that characterize the laws of distribution of random variables in integral and differential forms, the amplitudes of the input voltages are transformed into widths pulses, and then in the phase changes of the pulses, which are proportional to the input signal magnitude, and check that the shifted pulse coincides with the comparison pulse, resulting in pulses at the output, T employed in scaler.