RU1820207C - Method and device for measuring length and angles - Google Patents

Abstract

The invention relates to a measurement technique. The aim of the invention is to increase accuracy by increasing the uniformity of the division of the points of division. period when interpolating the step of discreteness of the displacement transducer. The inertia of the moving mechanical units in combination with the small length of the interpolated sections provides a high degree of uniformity of movement of the sensor element of the transducer, therefore, taking into account the stability of the filling frequency, it is equal to (Л С

Description

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the degree of fragmentation of the discreteness step is high. The change in the absolute values of the speeds of these movements for different periods is compensated by calculating the fractional part as the ratio of the number of filling pulses from the beginning or from the end of the period to the signal from the controlled object to their number for this period. The object, together with the sensing element of the displacement sensor 1, is brought into the translational or rotational movement as uniform as possible, and a periodic signal is generated at the output of the sensor 1 that carries information about the magnitude of the displacement of the object. This signal with the help of shapers 2 and 3 short pulses is converted into two sequences of pulses with the same period, but shifted relative to each other in phase by 180. As the object moves relative to node A, the fixation of the controlled elements of the object at the output of the shaper 5 short pulses occur pulses are such that between each pair of them several pulses occur from the shapers 2 and 3. Pulse information signals from the shapers 2, 3 and 5 are used to count an integer number of steps of the discreteness of the sensors 1 to move the counter 7 and to determine the time equivalents of the current steps of discreteness and their fractional parts of the winter polter. The received information is finally processed in the computer 9. 2 s. and 2 zpp-fs, 3 ill.

The invention relates to measuring technique and can be used to measure lengths and angles specified using multi-valued measures in the form of distances between strokes of linear measures, angles between side faces of angular prismatic measures or strokes of angular limbs and rasters, etc.

The aim of the invention is to increase the accuracy of measuring lengths and angles by increasing the uniformity of the arrangement of period division points when interpolating the step of the discontinuity of the displacement sensor.

The goal is achieved due to the fact that by the method of measuring lengths or angles, namely, that the object is connected with a linear or angular displacement sensor, the object is uniformly moved along the measurement line, the moments of passage of the controlled elements of the object relative to a fixed reference point are recorded, and the value the measured lengths or angles are judged by the values of the corresponding displacements of the object, recorded by the output signals of the displacement sensor with interpolation of the step of the discreteness of the latter, the measurement operation exist as follows: separately, an integer number of steps of the discontinuity of the displacement encoder falling within the measured value is calculated, and to determine the corresponding fractions of the steps of the discontinuity of the displacement encoder, its output signal is filled with a pulse sequence with an exemplary repetition rate a predetermined number of times the frequency repetition of the output signal of the sensor, count the number of filling pulses from the beginning or from the end of the period of the sensor output signal, inside which the signal from the controlled element of the object

10 of this signal and the number of filling pulses between the reference points of the specified period and find their ratio.

When applying the proposed method, high accuracy of the arrangement of interpolating pulses is achieved due to the fact that inside the interpolated sections, taking into account their small length, as well as the inertia of the moving mechanical units, uneven movement

0 there is almost no sensor element, therefore, due to the stability of the filling frequency, the uniformity of the fragmentation of the discreteness step is high. The change in the absolute values of the velocities of these displacements for different periods is compensated by calculating the fractional part as the ratio of the above number of pulses. .

30 The proposed method is illustrated by timing diagrams in FIG. 1, where a is the time sequence of nodal reference points of the periods of the sensor output signal; b - temporary position of the moment of pro- 5

walking the sensor element of a controlled coordinate; c - time sequence of high frequency filling pulses.

The essence of the proposed method is as follows.

Starting from a certain point in time to (which can be any, since the coordinate difference relative to the same reference point is subject to measurement), the number of periods of the sensor output signal (sequence a) is counted, as well as the number of filling pulses (sequence c) between the nodal points the reference periods of the signal Converter P | for each of these periods. When the signal of sequence b appears, the numbers Kc or K2i are fixed, which characterize the temporal location of the reference pulse of sequence b relative to the start or end nodal point of the sensor output signal period including it. With this, the spatial coordinate xi is the summation of the integer and fractional parts of the period of the sensor output signal according to the formulas obvious from Figs. 1:

or -x, (l. + 1.). (1) .

where c is the price of dividing the step of the discontinuity of the displacement sensor in measured units, for example, micrometers or angular seconds.

As the measurement object moves, the spatial coordinates Xo, xi, x2, ..., xfsi ... of all the controlled elements (strokes, faces, etc.) of the measurement object (total (N + 1) elements).

The desired lengths or angles are defined as the differences of the above coordinates according to one of the formulas:

X1-XO; X2-X1, - XZ-X2,1 ... XN-XN-1

(2)

or xi-xo; x2-ho; xs-x0; ... XN-XO

depending on the desired presentation of the measurement results. . . Known devices for measuring lengths and angles comprising a drive for moving an object in the direction of a measuring line, a linear or angular displacement sensor, the sensing element of which is associated with a movable part of the drive;

moved together with part of the drive moved together with the object, the fixation unit of the controlled elements of the object. installed with the possibility of fixing 5 moments of their passage relative to the reference axis of the assembly, shapers of short pulses of the sensor and fixing assembly, the step span of the discontinuity sensor with the control unit and

.0 series-connected buffer memory unit, calculator and recorder. As examples of such devices, a comparator for absolute measurements of dashed linear measures, in

5 in which the interferometer acts as a sensor, the main mirror of which is placed on a movable carriage with a measurable line measure, or raster conjugation, and the passage of controlled strokes is recorded by a photoelectric microscope; a device for measuring the angles of polyhedral prisms, in which a ring laser is used as a sensor, which rotates with a rotating

5 by a multifaceted prism, and the passage by the normals to the faces of the prism of a certain direction is fixed by a photoelectric self-collimator. In the specified devices. In addition, discontinuity step interpolators of the displacement sensor are used to improve the accuracy of measurements and include electronic circuits for fixing characteristic points of the primary sensor output signal or its splitters

5 phases, etc.

A disadvantage of the known interpolators is the relatively low uniformity of the arrangement of the interpolation points (unevenness of the initial step of discreteness), which limits the increase in measurement accuracy.

The aim of the invention is to increase the accuracy of measuring lengths and angles by increasing the uniformity of the arrangement of period division points when interpolating the step of the discontinuity of the displacement sensor.

The purpose of the device according to the invention is achieved by the fact that a device for measuring lengths or angles, comprising a drive for moving an object in the direction of the measuring line, a linear or angular displacement sensor, the sensitive element of which is associated with a movable part of the drive moving with the object, the fixation unit of the controlled elements of the object, installed with the possibility of fixing the moments of their passage relative to the reference axis of the node, the first and second shapers of short sensor pulses, the inputs of which are are connected with the sensor output, the short pulse generator of the fixation unit, the input of which is connected to the output of the fixation unit, the Interpolator of the step of discontinuity of the displacement sensor with the control unit and the serially connected buffer memory unit, the calculator and the recorder, is equipped with a counter of an integer number of steps of discontinuity of the displacement sensor, the input which is connected to the output of one of the shapers of the short pulse of the sensor, and the interpolator is made in the form of a generator of the reference frequency, the unit for determining the time equivalent in the current steps of discontinuity of the displacement encoder, the first, second, and third inputs of which are connected respectively to the outputs of the model frequency generator and the short pulse generator, and a unit for determining the time equivalents of the fractional parts of the discontinuity steps of the displacement encoder, the first, second, and third inputs of which are connected respectively, with the outputs of the generator of the exemplary frequency, one of the formers of the short pulses of the sensor, and the former. quick pulses of the locking device, the first and second outputs are connected respectively to the inputs of the control unit, the control input of which is connected to the same output of the buffer memory unit, the output is connected to the control inputs of the time equivalents determination unit of the current steps of the displacement of the motion sensor and the buffer memory unit the information inputs of which are connected respectively with the outputs of the same name of the determination of time equivalents and the counter of an integer number of steps of the discontinuity of the displacement sensor, the unit for determining the time equivalents of the current steps of discontinuity sensor displacement is made in the form of two pulse counters, the outputs of which are the information outputs of the block, four AND elements, the outputs of the first and third of which are connected respectively to the counting inputs of the pulse counters, and the outputs of the second and fourth are connected respectively with inputs Setting O of the same counters, and a trigger with a counting input, one of the outputs of which is connected to the second inputs of the first and fourth elements AND, the other output s the second inputs of the second and third elements And, the first inputs of the first and third elements And are combined and form the first input of the block, the first inputs of the second and fourth elements And are also combined and form the second input of the block, the counting input of the trigger is the third input of the block, and the third inputs of four elements And combined and form it

control input, and the unit for determining the time equivalents of the fractional parts of the steps of the discontinuity of the motion sensor is made in the form of a trigger with separate inputs, an OR element, the output of which is connected to the first input of the trigger, and the first input is the second input of the block, two pulse shapers, two elements And the pulse counter, the output of which is the information output of the unit,

5. wherein the first input of the first AND element is combined with the first input of the OR element, the second input is combined with the second input of the trigger and is the third input of the block, the first input of the second AND element is connected

0 with the trigger output, the second input is the first input of the block, the output is connected to the counting input of the pulse counter, the input of the first pulse former is connected to the second input of the OR element and

The input 5 of the pulse counter setting O is the first output of the block, the input of the second pulse former is connected to the output of the trigger, and the output is the second. block output.

0 Figure 2 shows a functional diagram of a device for measuring lengths and angles with an interpolator of a step of discreteness of a displacement sensor, where 1 is a sensor of linear or angular displacements, 2, 3,5,22,23

5 - shapers of short pulses, 4 - fixation unit of the controlled elements of the object, b, - interpolator of the step of discreteness of the displacement sensor with a control unit, 7 - counter of an integer number of steps

0 discontinuity of the displacement sensor, 8 - buffer memory unit, 9 - calculator, 10 - recorder, 11 - reference frequency generator, 12 - trigger with counting input, 13-16, 21, 24 - logic elements I, 17,

5 .18,25 - pulse counters, 19, 26 - logical elements OR, 20, 27 - triggers with separate inputs.

Fig. 3 shows time diagrams illustrating the operation of the individual elements of the circuit shown in Fig. 2. The polarity of the signals in this figure is shown conditionally, since a combination of the polarity of these signals, necessary for the operation of a real circuit, depends on the particular element base selected.

The linear or angular displacement sensor 1 generates a primary periodic signal, which is usually of a quasi-sinusoidal shape, which is filtered, amplified, and often converted to a rectangular shape. The period of this signal corresponds to a unit linear or angular displacement, i.e. step of discreteness of the sensor 1.

Shapers 2 and 3 of short pulses of 5 clocks generate periodic sequences of pulses whose leading edges fix the characteristic points of the primary signal of sensor 1, for example, the signal transition points through zero, respectively, 10 at its positive and negative fronts.

The fixation unit 4 of the controlled elements of the object generates pulsed 15 signals, usually bell-shaped, which are filtered and amplified at appropriate times. Shaper 5 generates pulses whose edges record the temporal positions of pulse signals 20 of node 4. The pulses of driver 5 can be connected, for example, to leading (trailing) edges, both edges, or to the top (maximum or minimum) of the primary output signal of node 4.25

The interpolator 6 steps of the discontinuity of the motion sensor with the control unit provides accumulation and transmission to the unit

8 of the information storage buffer, allowing to determine the fractional part of the number of 30 steps of discontinuity of the displacement sensor, which fit in a controlled coordinate. The inputs of the interpolator 6 are connected to the outputs of the formers 2,3,5 and the control output of the buffer memory unit 8, 35 the information outputs of the interpolator 6 are connected to the information inputs of the block 8, and the control output is interpolator. ra - with an input allowed recording information of block 8.40

In the counter 7 of an integer number of steps of the discontinuity of the displacement sensor, the pulse count of the shaper 2 is wandering and thereby the current value of the coordinate of the displacement of the sensitive element of the displacement sensor is recorded, the expression in the number of steps of its discontinuity. The counter input of the counter 7 is connected to the output of the shaper 2, and its information outputs are connected to the information inputs of 50 ka8. .- .. -,: -,

The buffer memory unit 8 is intended for recording and storing information from the interpolator 6. and a counter 7 about the fractional and integer parts of the coordinates of each of the 55 monitored elements of the measurement object, as well as for outputting this information to the computer

9 after completion of the measurement process / Calculator 9 is designed to calculate the desired lengths "angles using formulas (1). And (2).

The registrar 10 registers the measured values obtained after processing in the calculator 9, on paper, on a digital display or on the display. As devices 9 and 10, a standard computer with appropriate peripherals can be used.

The interpolator 6 steps of the discontinuity sensor displacement sensor with a control unit b contains a generator 11 of the exemplary frequency, the unit for determining the time equivalents of the current steps of the discontinuity sensor 1 displacement, containing a trigger 12 with a counting input, logic elements 13-16 and pulse counters 17 and 18, the determination unit the temporary equivalent of the fractional part of the step of discreteness, containing a logical element OR 19, a trigger with separate inputs 20, a logical element And 21, shapers 22 and 23 of short pulses, a logical element And 24 and a counter 2 5 pulses, as well as a control circuit containing an OR gate 26 and a trigger 27 with separate inputs.

The reference frequency generator 11 generates a frequency-stable sequence of pulses, the repetition rate of which exceeds the pulse repetition rate of the driver 2 by a factor equal to the number of interpolation points within the resolution step of the sensor. For example, a linear displacement sensor has a step of 1 µm, the speed of its sensitive element (always predetermined) is 1 mm / s, and it is required to obtain a discontinuity of the movement count of 0.01 µm. In this case, the pulse repetition rate of the driver 2 is mm / s: 1 μm 1 kHz, and the number of interpolation points within the 1-μm step: 0.01 μm 100. Therefore, the pulse repetition rate of the generator 11 should be chosen equal to fit-100 2 100 kHz . The generator 11 can be made, for example, from a master oscillator stabilized by quartz, a set of frequency dividers, switched before starting work, depending on the desired value of the output frequency determined by the measurement conditions. The output of the generator 1J is connected to one of the inputs of the logic elements AND 13.15 and 24. The direct and inverse outputs of the trigger 12 are connected to the second inputs of the elements AND 13 and t5, respectively. The same outputs of the trigger are connected to one of the inputs of the elements AND 14 m 16, the second inputs of the latter are connected to the output of the driver 3. The outputs of the logical elements And 13 and 15 are connected respectively to the counting inputs of the counter, 17 and 18 pulses, and the outputs of the elements And 14 and 16 to the inputs Installation About these counters ..

The output of the driver 2 is also connected to one of the inputs of the OR gate 19, the output of which is connected to one of the inputs of the trigger 20. The output of the driver 5 is connected to the other input of this trigger. The outputs of the drivers 2 and 5 are also connected to the inputs of the logic element And 21, the output which is connected to the input of the shaper 22. This shaper generates a pulse of a certain duration with the full or partial coincidence of the pulses from the shapers 2 and 5, the Output of the shaper 22 is connected to the inputs of the elements OR 19 and 26 and the inputs of the Settings and О of the counter 25 pulses, One of the inputs of the trigger 20 is connected to the input of the logic element And 24, as well as to the input of the driver 23. The latter generates a pulse of a certain duration when the trigger 20 transitions from one certain state to another (in the diagram, from state О to state 1). The output of the driver 23 is connected to the input of the OR element 26. The output of the OR element 26 is connected to one of the inputs of the trigger 27, the output of this trigger is connected to the third inputs of the logical elements And 13-16 and the control input of the buffer memory unit 8, and the control output of the last - with the second input of flip-flop 27. Trigger 27 prohibits the passage of pulses from the generator 11 to the counting inputs, and pulses from the shaper 3 to the inputs. Installing O. Counters 17 and 18 after the appearance of each pulse at the output of the shaper 5 and gives a command to record information at block 8. After collecting all the information, block 8 returns the trigger to its original state. The information outputs of the counters 17,18 and 25 are connected to the information inputs of block 8.

Depending on the selected element base, it may be necessary to link the described elements in polarity — the use of inverters in some places of the circuit in Fig. 2, not shown in the circuit. It is not shown in the diagram how the well-known chain of setting the elements of the circuit of Fig. 2 to their initial state before starting measurements is also well known. In an embodiment of the device, the reference signal, which sets the circuit elements of Fig. 2 to its initial state and allows the device to start working, can be generated by a special sensor that detects the passage of a certain point in space by the moving system (for example, the gap between a fixed pair of LED-photodiode)

overlapped by an opaque plate associated with the movable part).

A device for measuring lengths and angles — operates as follows.

At the operator’s command, the measurement object, together with the sensor element 1, is brought into uniform (if possible) translational or rotational motion, depending on

0 which value is measured: length or angle. At the same time, a periodic signal appears on the output of sensor 1, which carries information about the magnitude of the movement of the measurement object. This signal is converted

5 by shapers 2 and 3 in two sequences of short pulses with a repetition period like that of sensor 1. shifted relative to each other in phase by 180 °. Pulses from the shaper 2 are fed to

0 trigger input counter 1.2. which begins to periodically switch from one position to another, as a result of which two opposite-phase voltages of a rectangular shape are formed at its outputs. These voltages 5 are applied to one of the inputs of the logic elements AND, respectively 13 and 15. At the same time, from the output of the trigger 27, the other inputs of these elements receive a voltage that does not prevent their open state. Thus, the trigger 12 provides the passage of the pulses of the generator 11 to the counting inputs of the counters 17 and 18 pulses through the logical elements And 13 and 15 alternately, as you switch

5 of the trigger 12, for example, to the counter 17 in odd periods of the signal from the driver 2, and to the counter 18 in its even periods. At the same time, counters 17 and 18 accumulate the number of pulses representing the temporal equivalents of the corresponding periods of the signal from sensor 1 (former 2). The reset of the counters 17 and 18 to the initial state is also provided alternately by pulses from the shaper

5 3, received at their inputs. Installation О, depending on the resolving potentials from the outputs of triggers 12 and 27 at the inputs of logic elements And 14 and 16.

Pulses from shaper 2 through element 0 OR 19 also arrive at one of

: trigger inputs 20, confirming each

times its state (state 1 in Fig. 2).

As the measurement object moves at

the passage relative to the node 4 fixation

5 controlled elements of the object (strokes of the scale or limb, angular measure faces, etc.) at the output of the shaper 5 short pulses begin to appear, and between each pair of these pulses, as a rule, at least several

pulses from the shapers 2 and 3, since the step of the discreteness of the sensor 1 is several times less than the angular or linear price of the pulse from the node 4 fixation and many times less than the price between adjacent pulses of the node 4.

Each of the pulses from the driver 5, entering the other input of the trigger 20, causes it to tip over (state O). A subsequent pulse from former 2 again returns trigger 20 to its original state. In this case, a strobe pulse arises at the output of the trigger 20, the duration of which is equal to the time interval between pulses from the driver 5 and the next pulse from the driver 2. This

the pulse allows the passage of counting pulses from the generator 11 through the logical element And 24 to the counter 25 pulses. Thus, the number of pulses is accumulated on the counter 25, which is the time equivalent of the fractional part of the step of the discreteness of the sensor 1 corresponding to. pulse with shaper 5.

At full or partial coincidence of the pulses from the shapers 2 and 5, an output appears on the output of the And 21 element, a pulse whose duration can vary depending on the degree of overlap of the input pulses. This pulse is brought to a certain duration by the shaper 22 and sets the counter 25 to zero

. state i.e. the fractional part is equal to zero. Since in the case under consideration. Pulses arrive at both inputs of trigger 20, at their end its state is undefined. To avoid this, the pulse from the shaper 22 through the logic element OR 19 also arrives at the same

 trigger 20 as pulses from the shaper

2. ..:. ; . - / ..; : /-.- -;

In the previous case, at the end of the strobe pulse from the trigger 20, the shaper 2 generates a short pulse, which, like the pulse from the shaper 22 :: arrives at the OR element 26, and from its output to one of the inputs of the trigger 27, causing it to fire. Moreover, the potential at its output locks the logical elements AND; 13-16 and gives a signal to block 8 of the buffer memory, allowing recording information from counters 17, 18, and 25, as well as from counter 7 of the integer number of steps of the discontinuity of the displacement sensor, which counts the number of pulses from former 2, starting from the moment it started coordinate reference, i.e. fixes the current value of an integer number of steps of discreteness. .

Thus, when each pulse appears from the driver 5 in block 8, the recorded information appears, which is necessary for calculating the coordinates according to formula (1). At the same time, one of the counters 17 or 18 turns out to be written O. It is not taken into account or the sum of the values of both counters is taken. After the recording of information is complete, block 8 gives a signal to the second input of trigger 27 and the latter returns to its original position.

0 After collecting information that corresponds to all control points (there are usually several of them, for example, strokes of a linear dashed measure, angles of a polyhedral prism, etc.), the information from block 8 of the buffer memory is read into calculator 9 and the calculator calculates the coordinates according to the formula (1). as well as their differences by formula (2), since it is usually required to determine not the absolute coordinates of points in space relative to the starting point, but their differences, for example, 5 when measuring the intervals between strokes of stroke measures, angles of polyhedral prisms, etc. The measurement results are recorded by recorder 10.

 . Embodiments of a device for measuring lengths and angles are possible depending on a number of parameters influencing. speed dialing and recording

0 information, such as measurement speed, number of points to be monitored, absolute values of measured values, ratio of steps

 discreteness of the sensor and interlator. 5 in the time diagram of FIG. 2. for transferring information from the counter 7 to the buffer memory unit 8, it should not exceed the period of the sensor output signal.

1, then information can be rewritten from counters 17, 18, and 25. This time is limited only by the minimum possible time of arrival of the next pulse from shaper 5. For even higher measurement performance at 5 outputs of counter 7, dynamic memory elements can be used te, storing information unspecified above time, while the counter 7 continues to count. /.-. . -. . 0 At relatively low measurement speeds and small values of the differences of the counters, first of all, the counter. 7, when the time of transferring information from them to the unit: 8 does not exceed half the period of the output signal of sensor 1, it is possible to modify the circuit in FIG. 2 : the output of driver 3 can be connected to the R-input of trigger 27, the output of trigger 27 can be disconnected from the logic elements I and 14 and 1.6, and instead of the latter, use two inputs of Installation O connected in the And circuit, which are available for most types of counters.

Claims (4)

1. A method of measuring lengths and angles, namely, that the object is connected with a linear or angular displacement sensor, uniformly moving the object along the measurement line, recording the passage of the controlled elements of the object relative to a fixed reference point, and the size of the measured lengths or angles judged by the values of the corresponding displacements of the object, recorded by the output signals of the displacement sensor with interpolation of the step of the discreteness of the latter, I distinguish by the fact that, in order to increase the accuracy, separately the integer number of steps of the discontinuity sensor of displacements that fit into the measured value is counted, and to determine the corresponding fractional parts of the steps of the discontinuity of the displacement sensor, fill its output signal with a pulse train with an exemplary repetition rate a predetermined number of times the repetition rate of the sensor output signal, calculate the number filling pulses from the beginning or from the end of the period of the sensor output signal, inside which a signal arises from the monitored element the object, before this signal, and the number of filling pulses between the reference points of the specified period and find their ratio. 2. A device for measuring the lengths of angles, comprising, a drive for moving the object in the direction of the measuring line, a linear or angular displacement sensor, the sensing element of which is connected with the movable part of the drive moving with the object, a fixation unit for the controlled elements of the object, mounted with the possibility fixing the moments of their passage relative to the reference axis of the node, the first and second drivers of short pulses of the sensor, the inputs of which are connected to the output of the sensor, the driver of short pulses of the node latching, the input of which is connected to the output of the latching unit, a discontinuity step interpolator of a displacement sensor with a control unit and serially connected buffer memory unit, a calculator and a registrar, characterized in that, in order to improve accuracy, it is equipped with a counter of an integer number of discontinuity steps of the displacement sensor the input of which is connected to the output of one of the short-pulse shapers of the sensor and the interpolator is made in the form of a model frequency generator, a unit for determining the time equivalents of current w gov discreteness 5 displacement sensors, the first, second and third inputs of which are connected respectively to the outputs of the reference frequency generator and short pulse shapers of the sensor, and the unit for determining the temporal equivalents of the fractional parts of the steps of the discontinuity of the displacement sensor, the first, second and third inputs of which are connected respectively to the outputs of the model exemplary frequency of one of 15 short pulse shapers of the sensor and a short pulse shaper of the locking device, the first and second outputs are connected respectively to the inputs of the control unit, the control input of which is connected to the output of the buffer memory unit of the same name, the output is connected to the control inputs of the unit for determining the time equivalents of the current steps of discreteness displacement sensor and unit 5 buffer memory, the information inputs of which are connected respectively with the same outputs of the blocks for determining temporary equivalents and an integer counter of steps of the discontinuity of the motion sensor, 3. The device according to claim 2, characterized in that the unit for determining the time equivalents of the current steps of the discontinuity of the displacement sensor is made in the form of two 5 pulse counters, the outputs of which are the information outputs of the unit, four AND elements, the outputs of the first and third of which are connected respectively to the counting inputs of the impulse counters 40, and the outputs of the second and fourth to the inputs respectively Setting About the same counters / and trigger with a counting input, one of the outputs of which is connected to the second inputs of the first and fourth 45 AND elements, another output - with the second inputs of the second and third AND elements, the first inputs of the first and third AND elements combined and form the first block input, the first inputs of the second and fourth elements 50 And also combined and form the second block input, counting input The trigger is the third input of the block, and the third inputs of the four AND elements are combined and form its control input. 55. 4. The device according to claim 2, with h and h. And more so with that. that the unit for determining the temporary equivalents of the fractional parts of the steps of the discontinuity of the displacement sensor is made in the form of a trigger with separate inputs, an OR element, the output of which is connected to the first input of the trigger, and the first input is the second input of the block, two pulse shapers, two And elements, and a counter pulses, the output of which is a flea information output, the first input of the first AND element is combined with the first input of the OR element, the second input is with the second input of the trigger and is the third input of the block, the first input is second of the And element is connected to the trigger output, 1 0 the second input is the first input of the block, the output is connected to the counting input of the pulse counter, the input of the first pulse shaper is connected to the output of the first AND element, the output is from the second input of the OR element and to the input O setting of the pulse counter and is the first output of the pulse counter, the input of the second the pulse former is connected to the output i of the rigger, and the output is the second output of the unit. fi + ti No. Shchig. 1