SU1051455A1 - Device for measuring frequency responses of dielectric properties of materials - Google Patents

Abstract

DEVICE FOR MEASURING FREQUENCY PERFORMANCE DIELECTRIC PROPERTIES OF COMPOUNDS comprising sweep generator, capacitive sensors whose field interacts with the analyte, amplitude detectors, calculation unit and the recorder, characterized in that, in order to increase the sensitivity and expansion of the frequency measurement range of dielectric properties of materials characteristics , a channel switch, controlled by a channel number counter, time base driver, differentiator, max selection block, are entered into it. mains voltage, latch voltage, resistive healer, comparator, pulse generator, the first and second time interval converters in the code, one output of the sweep generator connected to the input of the time base generator, and another output of the sweep generator connected to the input of each resonant divider voltages, the outputs of these dividers are connected via amplitude detectors to the information inputs of a channel switch connected by control inputs to the outputs of a channel number counter, the information output of a switch The channels are connected to the information input of the voltage clamp and through an a4 to the first input of the voltage extraction block, the second input of which is connected together with the installation input of the channel number counter and the first input of the first transformer time interval — the code to the output of the time base generator, with In this case, the first output of the maximum allocation unit is connected to the information input of the channel number counter, which controls (L the voltage latch input and the first jBXOuoM of the second converter) d, the second output of the voltage selection block is connected to the second inputs of the first and BTCpOi converters, the time interval, while the third inputs of these converters are connected to the output of the pulse generator, the fourth input of the second converter is connected to the output of the comparator, the first input of which is target The output of the resistive healer is connected, the input of which is connected to the first output of the voltage clamp, and the second output of the voltage clamp, the outputs of the codes of both transformers are connected to the second input of the comparator The aggel time-code interval, the outputs of the channel number counter and the third output of the voltage selection block are combined into a common bus to which the computation unit is connected, the output of which is connected to the recorder input.

Description

1 The invention relates to a measuring technique and can be used to measure the frequency characteristics of the dielectric properties of substances for the purpose of non-destructive testing of complex clumps. A device is known for measuring the frequency characteristics of a pielectric dual of substances, which contains a sweep generator, capacitive dividers. Voltages, vector-dimensional phase meters, phase shifters, computational blocks and panoramic recording devices ij. However, this device cannot provide high accuracy and sensitivity of Tg o wide frequency range, since it is not possible to ensure that the phase-frequency and amplitude-frequency characteristics of the input circuits of devices connected to you are identical the course of the working and reference capacitive voltage dividers. It is also known a device for automating measurements of the frequency characteristics of dielectrics, which contains two capacitive sensors included as capacitors of the oscillatory circuits of the first and second sweep generators, amplitude detectors, frequency converters to voltage, computational units and a recorder consisting of horizontal and vertical deflection, blender, marker and electron beam tube. The first capacitive sensor is filled with the test object, while the second serves as a reference. The outputs of both sweep generators are connected in parallel with the inputs of the corresponding frequency converters to voltage and amplitude detectors, the outputs of which are connected to the inputs of computing units interconnected in such a way that the voltage at their outputs is proportional to the loss angle t fi and loss factor EtgS measured. Any of the outputs of the computing units can be connected to the input of a vertical deflection amplifier connected to the output with vertical deflecting plates of an electron-beam tube, the horizontal deflecting plates of which are connected to the output of a horizontal deflection amplifier also connected to the inputs of both sweep generators. Measurements of C, lu S and matter are performed using 55 means of comparing the Q-factor and the resonant frequencies of the oscillatory circuits of the first and second (reference) sweep generators. Since the output voltage of the horizontal deflection amplifier is also a voltage modulating the frequency of both oscillators, the curves on the recorder screen are observed to vary from c to frequency D. A disadvantage of the known device is the dependence of the measurement accuracy on the identity of the characteristics of the sweep generator, detectors and frequency to voltage. Another major drawback is the contradiction between the width of the band covered by the sweep-frequency generator and the sensitivity of the device noi. . This is explained by the fact that the capacitors of the oscillatory circuits of the sweep-generators are capacitive dates {iki and, therefore, the frequency sweep can be reduced by changing the inductance of the coils of these circuits. A wide range of oscillation frequencies can be ensured only by using coils with magnetic cores, but all of them have sharp non-uniformity of frequency characteristics introduced by them into the loss contours. The purpose of the invention is to increase the sensitivity and expansion of the frequency range for measuring the dielectric properties of substances. The goal is achieved by the fact that a channel switch, controlled by a channel number counter, is inserted into a device for measuring the frequency characteristics of the dielectric properties of substances, including a sweep generator, capacitive sensors whose field interacts with the test substance, amplitude detectors, computing unit and recorder form of the time base, differentiator, voltage extraction block, voltage lock, resistive healer, comparator, pulse generator, first and second transducer If there is a time interval in the code, and the output of the sweep generator is connected to the input of the time base generator, and another output of the sweep generator is connected to the input of the 1st resonant voltage divider, the outputs of these dividers are connected to the information inputs of the switch

connected by the control inputs to the outputs of the counter of the number drop, the information output of the channel switch is connected to the information input of the voltage clamp and through the differentiator to the first input of the voltage extraction terminal, the second input of which is connected together with the installation input of the counter of the channel number and the first input of the first time interval converter - code to the output of the time base generator, with the first output of the maximum allocation block connected to the information input of the channel number counter, control The first input of the voltage clamp and the first input of the second converter is the time interval — a second, the second output of the voltage extraction block is connected to the second inputs of the first and second converters, the time-code interval, the third inputs of these converters are connected to the output of the pulse generator, the fourth input The second converter is connected to the output of an ommparator, to the first input of which is connected the output of the resistive healer, whose input is connected to the first output of the voltage clamp, and to the second input to a second voltage latch output is connected, the code output of both transducers is a KOTS time interval, outputs, the channel number counter moves, and the third output of the voltage selection block are combined into a common bar to which the input of the computing unit is connected, the output of which is connected to the input the registrar.

FIG. 1 shows the scheme of the proposed device; in fig. 2 is a block diagram of the voltage selection maximum; in fig. 3 - 8 are timing diagrams for the operation of the device.

The device contains a sweep-generator-1 with a linear law nzme-. the frequency of the output signal, which is fed to the inputs of all the dividers 2 voltage, each of which consists of a resistor and an oscillatory circuit, in which a capacitive sensor plays the role of a capacitor. The outputs of the voltage dividers through the amplitude detectors 3 are connected to the corresponding informational inputs of the 4-channel switch, which is connected to the outputs of the counter 5 of the channel number, the reset of which

Provided by the connection of the installation input to the output of the form-generator of time base 6. The output of the 4-channel switch is connected to the input of the voltage clamp 7, which, together with the resistive divider 8 and the controller 9 connected to it, fixes the maximum voltage at the output of the switch and channels connected also through the differentiator 10 to the block. com 11 maximum voltage allocation whose outputs are connected to the inputs of the first 12 and second 13 converters time-code interval, clocked by the pulse generator 14, to the information input of the counter 5 channel number and together with the outputs of the counter 5 channel number and the outputs of the converters 12 and 13 interval time-code to the input of the computing unit 15, which controls the recorder 16.

The time base generator 6 comprises a comparator 17, a standby multivibrator 18 and a source 19 of the reference voltage 1i, connected to the second input of the comparator 17. The voltage clamp 7 consists of a peak detector 20, controlled by the input by switch 21, and by output 22 by a key 22. The resistive divider 8 is formed by two resistors 23 and 24. The voltage extraction block 11 (Fig. 2) contains comparators 25 and 26 connected by their second inputs to the sources 27 and 28 of the reference voltages, trigger 29, which is controlled by means of a logic element OR 30 logs NOT 31 and AND 32 and OR 33 are other trigger 34, controlled by a setup input by an OR 35 logic element, and a comparator 36, controlled by a key 37.

The first converter 12 time-code interval (Fig. 1) is assembled on summing counter 38 and register 39, controlled by waiting multivibrators 4O and 41, and AND 42 logic element. Second converter 13 1 interval of time the code is assembled on summing counter 43, which is controlled by the installation input shaper 44 pulses, and the information - logic elements And 45 and NOT 46.

The computing unit contains the processor 47, the storage unit 48, the first 49 and the second 50 interface units. The channels of these 47O units, as well as their secondary channels and control channels, are connected to three corresponding common buses. The device works in the following way. The voltage cyclically and Yusheis is linearly frequency driven from the output of the sweep-generator 1 to the inputs of all voltage dividers 2. The graph of the instantaneous frequency variation (the cBvm generator versus time t during one cycle is shown in Fig. 3. The direct section illustrates the working section — the direct frequency variation, and the direct bv section — the return section from the maximum frequency ao zero — the reverse one. the stroke. The period of the swing of the clockTogs is equal to the time interval between points ab on the t axis, and the width of the swing strip is numerically equal to the maximum generation frequency (reached at point b). Parallel oscillatory contours of healers 2 stresses are set to frequencies i p f h t h within width The bandwidth, however, the dependence on the time of the voltage taken from the output of each amplitude ctector 3, coincides in shape with the dependence of the output voltage of the corresponding target l on the frequency and differs from the output only by the scale but the axis and the abscissa. , as it follows from the graph (Fig. 3), is numerically equal to the tanga of the angle of inclination of the straight a-b to the time-axis MeHHt, so that with a linear law of the frequency band -b are related meHHeMi ki,. The resistance value of each resistor of divider 2, however, is chosen to be much greater than the value of the resonant resistance of the corresponding circuit, so that the amplitude-frequency characteristic of the voltage divider practically does not differ from the resonance curve in terms of the voltage of the corresponding oscillatory circuit. The input matrices of amplitude detectors bypass the contours of healers 2 and somewhat reduce the sensitivity of the test bench in dielectric constant and loss. The introduction of the measured vision into field capacitive sensors changes the resonant frequency and bandwidth of each oscillatory cont. At. this resonant part 1L-1-1 i, 1-7: s, etc. become lower and resonant) 1e curves are smoothed. FIG. Figure 3 shows the voltage variation at the output in the voltage coordinates; the amplitude detector 3 before and after the substance has been inserted into the capacitive sensor. For definiteness, take a voltage divider tuned to frequency i | and the corresponding amplitude detector. The remaining healers and detectors work quite similarly. From FIG. 3 it follows that if the resonant frequency input factor was f the amplitude of the resonance Vl and the width of the resonance curve at the level 1 / i | 2 is equal to tA., And after introducing these paro / et ry equal to i j, respectively, then the maximum voltage at the output of the amplitude ctector will be fixed in the first cjr / tea after s, and in the second case - through i, | c relative to the start of the sweep frequency (point a in FIG. 3). In this case, the time intervals during which the voltage at the output of detector 3 exceeds the value (l / f 2) i / B in the first case and (1 / G2) in the second, are equal, respectively, and (and ui s. The difference in time intervals ti is proportional to the dielectric the permeability of the substance, and the difference σ l l, 1 depends on the loss of the dielectric impedance sensor into the capacitance sensor Ki-DC. Similar data obtained by other voltage healers and amplitude detectors give information about the values of the dielectric parameters of the other frequencies J, , 1a and t. ., Lying in the frequency range does not exceed the width oscillate present svipreHef band) aTopa ,. Measurement of time intervals, -1; , j -C ul i of other analogs of the bushes, as well as the conversion of these intefvals E, the digital code is executed in blocks 4-8 and 10-13 (Fig. 1). Computing unit 15 converts csh zrah time interval codes into digital dielectric permittivity and loss codes in accordance with the formulas below. Sun is a collection of data on permeability and loss measured at frequencies. 2 ..., etc., represents the frequency characteristics of the HCTViKH dielectric properties of weights of tB in akkr) of the 1st form. Since the exhaust signals 11 of the detector detectors 3 pass through the maximum at different times t, i: 2, and so on, the processing of these signals proceeds sequentially in time, which saves a considerable amount of equipment while maintaining a fast wall. The output signals of the amplitude circuits 3 are read-sequentially read by the 4-channel switch, which is controlled by the channel number counter 5. Amplitude detectors 3 with matching dividers 2 are connected to the inputs of switch 4 in order of the increase in the resonant frequencies of the oscillating circuits. In this case, if the counter of the 5th channel channel is in the O state, then the output of the switch 4 is connected to the channel containing the detector and the healer with the resonant frequency f; (if the counter 5 is in state 1, then the channel with the resonant frequency is connected. EU the counter 5 is in state 2, then a channel with a resonant frequency 1-j, etc. At the beginning of each sweep cycle, the counter 5 of the channel number is reset to state O by the pulse generated by the time base generator 6, Nor 1, 2, 3, etc. - impulse control maximums generated by block 11, and the next switching of the counter 5 and the switch occurs only after the information received from this divider 2 is processed. The timing diagram explaining the operation of the time base generator 6 is shown in Fig. 4. Sawtooth sweep n (i, produced by the sweep generator, controls the oscillation of its frequency so that the linear increase of the voltage P (i) (section ab, fig. 4) corresponds to a linear increase in the instantaneous frequency from zero to maximum (section ab, Fig. 3), and the voltage drop n (-tl (part b, figure 4) decreases the instantaneous frequency zon (part b c, Fig. 3). The voltage P (-1 is compared by the comparator 17 with the reference voltage of the source 19Uo which is selected from the condition of reliable operation of the comparator 17. At the output of the comparator, pulses of L appear; the duration of which is determined by (1) UQ (Fig. 4), and the period is equal to the swing period and frequency. To improve the accuracy of 4x moment the beginning of the cycle kakpni (time base) of the hfimenennaya multivibrator 18, triggered by the beginning of the pulse) (7 The back edge of the pulse of the multivibrator determines the time base. Processing the amplitude-frequency characteristics of Depot 2 voltage taken from the amplitude detectors 3, which are alternately connected to the output The 4 channel switch is produced as follows. A plot of the output voltage X d at the output of the switch 4 is shown in FIG. 5. The maximum value of the voltage is A, the width of the resonant cycle band is determined at the standard level () A. The voltage X4 is differentiated in time by the differentiator 10 (plot, fig. 5). The moment of voltage transition at the output of the differentiator through zero is recorded by the comparator 36 of the maximum allocation unit 11. To block the false positives of the comparator 36 at the moments of switching the 4-channel switch, the comparator 36 gates with the help of two additional comparators 25 and 26, the second inputs of which are connected to the sources 27 and 28 of the reference voltages (U) and (11/2) Impulses X appearing at the output of the comparator 25 under the condition of / X d / 4 U; (, with its leading edge sets trigger 29 into one state, and this trigger is reset to zero state either by means of a pulse from the output of comparator 26 when condition / X p / U2 or at the beginning of each cycle of oscillation of the frequency of the pulses of the waiting multivibrator 18. The output pulse Xjfj, trigger 29 gates the key 37, which closes the first input of the comparator 36 only for a time equal to the length of the section r – d - At the output of the 1O differentiator (Fig. 5). Thus, the pulses 29 cut only that part of the curve y which contains only one transition through zero, and this is the goal of gating the comparator 36. The falling edge of the output pulse XjftS of the comparator 36 captures the moment of reaching the maximum april at the output of this amplitude detector 3, or the instant of coincidence of the instantaneous

Sweepers of the generator 1 with the frequency of the parallel in parallel1 About the loop circuit of the corresponding healer 2 voltage.

Measuring the bandwidth of the resonance curve for the voltage of this oscillatory circuit is capable of measuring the time interval during which the voltage at the output of the corresponding amplitude cectector exceeds the level equal to 1 / {2 of the maximum equal to A. Since the value of A is not known in advance, This is only determined by the half width of the resonance curve. The maximum voltage is clamped by a voltage lock, the peak detector 2O of which is connected by a switch 21 and a 4-channel switch to the output of this ctector 3. The switch 21 and a strobe pulse control key 22 (Fig. 5 and 6), BbipaGarbiBaeNfbiM with a maximum allocation unit 11 through the trigger 29 and logic elements 31 - 33. The gate-pulse takes the value of logic 1 under the condition of the truth of the logic output (A 7) "f (Fig. S), while the key 22 is open and the switch 21 connects the output

switch 4 with the input of the peak detector 2O and the second input of the comparator 9.,.

The plots of voltages X2 and at the outlets of the switch 21 and the key 22, respectively, are given in FIG. b. The dotted line on plot X shows a resonant curve relating to this divider 2 voltage (the same as the plot on

FIG. 5), and the solid line - 21 cut out by the switch section of this curve. Peak detector 20 captures the maximum value of voltage Xj equal to A for a time equal to

strobe pulse duration. The dotted line on the X7o «diagram of the torus corresponds to the output voltage 1 of the peak detector 20, the change in its input voltage is shown. Resistors 23 and 24 of the replacement divider 8 are selected so that its output voltage is equal to the voltage divided by so and that the logic level 1 at the output X9 of the comparator Q exists only when the condition X is fulfilled (1). The time interval between the rear ph. X) ntami Bbixon HTiix pulses Xq and N f,

and ZG cooTfMiTcTBveT pockparators

The frequency of ui kit is equal to the half width of the resonance curve. Upon expiration of the c Tp (j6-pulse X j, i.e., the cox X takes the value of the logic switch 21 and the key 22 shorts the input and, accordingly, the output of the peak detector, which causes eix) to discharge and reset.

The conversion of the time intervals corresponding to the resonant frequencies and the half-width values of the resonance curves of voltage healers 2 to a digital code is made by the first 12 and second 13 converters {5 time-code-intervals, respectively. The source of the counting pulses for both converters is the generator of 14 pulses.

FIG. 6-8 illustrate timing charts of the conversion. FIG. 7 shows the processing of only the first two pairs of intervals i,, frti and i-j, the remaining pairs i-, it-, etc. are processed quite similarly within a given frequency sweep cycle. In-gervaly time t,, tg and t.ts. measured; relative to the time base (the rising edge of the Xfg pulse of the multivibrator in the front 18, .fig. 4 and 7). Their measurements are based on counting the number of periods of the counting pulses of the generator 14, the stitches in these intervals.

The digital code of the intervals {.- (, 1: 2 and so on) is formed in one cycle by the frequency T1.1 by the counter 38 operating in the continuous counting mode. It is reset by the setup input at the beginning of each sweep of the frequency by the time base pulse g. The kots formed by the counter 38 are entered into the register 30 by applying a short pulse from the three multivibrator 41 to the control input of this register. The launch of the multivibrator 41 occurs on the rear output pulse X-5 (j comparator 36 (Fig. 7). Since the pulses cannot be synchronized with a counting pulse pulse generator 14 (the resonant frequencies are not known beforehand), then direct rewriting of the code from counter 38 to register 39 may be erroneous if it occurs when the transients of the next switch in counter 38 are not completed. The accuracy of the failed recording is approximately equal to the time ratio Installing i 1-.C counter 38 seconds to 1 BpieMOHii interval can be activated by impulses and can actually make up the pore size of 1 / 1OO. To increase the efficiency of the first converter 12, the time interval-ko in it introduces an additional waiting multivibrator 40 and logic element AND 42. The process of blocking the failed recording is illustrated with a time anagram (Fig. 8). The waiting multivibrator 40 generates a negative pulse. gates the arrival of the counting pulses on the information input 38 through the logic element And 42. The pulse duration X Q exceeds the time required for the code code to be rewritten from the counter 38 to the register 39, and satisfies the relation - o., where is the period, at is the duration of the counting pulses X; j4 generator 14 pulses. The duration of the positive pulse X4A of the multivibrator 41 should be longer than the installation time of the counter t, under these conditions, with a probability close to the probability of a failed recording, only one counting pulse X will be blocked (4 gives the counter a minor amount of the least significant counter 38 and a very small error Fig. 8 shows the case of a partial blocking of the counting pulse X 4 (pulse a), the dotted portion of the cut part of the pulse fed to the counter 38 is highlighted. If the duration of this signal is still sufficient to switch the counter 38, then in this case, the unit of the least significant bit does not occur, and after a time interval the counter code 38 is fixed in register 39. The code change on the output tires X of the register 39 is shown in Fig. 8. If the trailing edge of the pulse X is the comparator 36 falls into the interval between the Xo counting pulses of the current counting pulse (b) is not blocked, and the next (c) blocks with completely, and the coa recorded in the register 39 differs from the true one by the least significant bit (FIG. eight). The generation of a code corresponding to the K1-bandwidth of the resampling curves is performed by the counter 43 of the second converter 13 time-code interval. This counts the number of periods of clock pulses of the generator 14 counting imntaCOB, placed in the time interval between the moments of fixation of the maximum voltage A at the output of the given amplitude detector 3 and the moment of equality of the output voltage of this detector to the value () A. This interval is equal to the time between the falling edges of the pulses 9 of the comparator 9 and the pulses X of the comparator 36. The counter 43 is zeroed by means of the pulse former 44, the output signal of which is formed along the leading edge of the strobe pulse X -j- j of the voltage extraction unit 11 of the maximum voltage before counting the next portion of the counting pulses. The portions are separated from the continuous sequence produced by the pulse generator 14 using the HE 46 and I 45 logic elements, which implement the logical expression 36 where L is (4 is the output pulse sequence of the generator 14; the pulse portion at the information input of the counter 43 (FIG. 6) .. The change in the state of the counter 43 is conventionally shown in Fig. 7 (diagram). The low potentials of the signal X o correspond to resetting the counter 43 to zero, and the high potential corresponds to the storage of the fixed code. Formation of codes corresponding to t, ut, i2 2 t. d., ends by the time points t, -t ui :. t ..., etc. The channel number 5 records its next state a little later, on the falling edge of the strobe pulse. The change of the states of the counter 5 is conventionally shown Plot X5 in Fig. 7. The readiness of the codes formed by the converters 12 and 13 and the channel number counter 5 is fixed by setting the trigger voltage selection unit 11 into 1 on the back edge of the strobe pulse and reset to 0 on the code generation time is either a time base pulseX g or you the output pulse X, jc of the comparator 25 (FIG. 7), The output of trigger 34, together with the outputs of both converters 12 and 13, the time-code interval and the outputs of counter 5, the channel number are combined into a common bus and connected to the input channel of the computing unit 15, and the information on the next resonance curve is fixed to the WSC of this unit for time T (Fig. 7).

Ytr Ktura and the principle of operation of the computing unit 15 used in the proposed device are well from natural. The channels of the aan y paras 47, the flash unit 48, the output channel

The data of the first interface unit 40 and the bhoana data channel of the second integrated face unit 5O are combined into an avunapravlivvnnuyu common bus.

The targeted and controlled channels of these units are also shared by common buses. The second interface unit 50 is most suitable for providing communication with the recorder 16.

Processing information arriving at. The compiler of the computing unit 15 is based on the formulas derived from the well-known resonant frequency variation method used to measure dielectric properties of the factors.

Thus, for the oscillating cycle, the frequencies are obtained as C (It)

(i0 ... and T.a., (i,).,) ... and so on, which give a discrete representation of the frequency characteristics of the pyelectric properties of a substance. If these properties change with time, for example, depend on the temperature of the substance, then

Measurements with repetitive frequency sweep cycles allow you to observe the dynamics of changes in their frequency characteristics.

The computing unit sequentially receives and processes the time interval codes and the corresponding channel numbers (or voltage dividers 2) and the ready signal of the trigger 34, and then outputs the received information via the interface unit 50 to the register 16.

The technical and economic effect of the invention is associated with improved measurement accuracy, short time spent on obtaining data at many points in the frequency range, and ease of maintenance of the device due to its automation.

The well-known device is a quality meter type BM-409G from TESLR, which, together with the sample holder of dielectric types BP-4090 of the same company, is used as an indicator of the frequency characteristics of the dielectric properties of a substance. The advantage of the proposed device compared to the known one is much higher labor productivity in dielectric measurements in a wide frequency range.

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Claims (1)

DEVICE FOR MEASURING THE FREQUENCY CHARACTERISTICS OF DIELECTRIC PROPERTIES OF SUBSTANCES, containing a sweep generator, capacitive sensors, the field of which interacts with the substance under study, amplitude detectors, a computational unit and a recorder, in order to increase the sensitivity and expand the frequency the range of measuring the characteristics of the dielectric properties of substances, a channel commutator, controlled by a channel number counter, a time base shaper, a differentiator, a maximum allocation unit n voltages, voltage clamp, resistive healer, comparator, pulse generator, first and second time interval to code converters, with one output of the switcher-generator connected to the input of the time base former, and the other output of the sweep generator connected to the input of each resonant voltage healer, outputs of these healers through amplitude detectors connected to the information inputs of the channel switch, connected by the control inputs to the outputs of the channel number counter, the information output of the channel switch with union of a data input latch voltage and through di ^<·: ferentsiator the first input voltage maximum allocation unit, the second input of which is connected with the adjusting input of counter numbers channel and the first input of the first inverter time interval - code to the output driver time base, wherein the first output of the maximum allocation unit is connected to the information input of the channel number counter, the control input of the voltage clamp and the first input of the second converter, the time interval is code, the second output the maximum voltage isolation lock is connected to the second inputs of the first and second converters with a Nikon time interval, while the third inputs of these converters are connected to the output of the pulse generator, the fourth input of the second converter is connected to the output of the comparator, the first input of which is connected to the output of the resistive divider, the input of which is connected to the first output of the voltage clamp, and the second output of the voltage clamp, connected to the second input of the comparator, the outputs of the codes of both converters time interval-code, Exit counter channel numbers and the third output voltage maximum separation unit are combined in a common bus, which is connected to the input of the computing unit, the output of which is connected to the input of the recorder.