SU1448336A1 - Apparatus for measuring recurrent time intervals - Google Patents

Abstract

The invention can be used in the construction of fosometers, chastotometers and other devices. The purpose of the invention is to expand the functionality of the device. The device contains shapers 1 and 2 pulses, elements OR 3 and 8, a generator of 4 pulses, counters 7, .9, 10, 11, and an end fixation unit 12 — a series of measurements. The introduction of depxfrater 6 and counter 5 and the formation of new functional connections allow the generation of a signal signaling the coincidence of the durations of two of the three measured intervals, and a signal signaling the absence of a coincidence of the durations of any two of the three measured intervals. In this case, the measurement results are obtained in binary code. 2 Il. , Th FIG.

Description

The invention relates to a pulse technique and can be used to measure repetitive time intervals in the construction of the fonomer5 frequency meters, and similar instruments and various measurement systems.

The purpose of the invention is to expand the functionality of the device by generating a signal signaling the coincidence of the durations of two of the three measured intervals, and a signal signaling the absence of a coincidence of the durations of any two of the three intervals, as well as obtaining the result measurements in binary code

FIG. Figure 1 shows the structural electrical circuit of a device for measuring repeated time intervals; Fig. 2 shows an example of execution of a block for fixing the end of a series of measurements.

The device for measuring the repetition - joEijixcH time intervals contains the first second generator 1, 2 pulses (optional) the first element OR 3, the output of which i-spools 2, the pulse generator 4, and the counter 5 pulses are connected to the main input. the summing-ruins input of which is connected to the output of the element OR 3, the decoder 6, the resolution input () of which is connected to the output of the impulse generator 4, and the information inputs to the outputs of the pulse counter 5, the counter 7 pulses (reversible), the second element OR 8, counter 9 imp lsov to summing. the input of which is connected to the output. element OR 8, the counter 10 1F1pulsov (reversible), the summing input of which is connected to the subtractive input of the counter 7, with the first input of the element. OR Hang the second output of the decoder 6, the counter 1 1, pulses (reversible), the summing input of which is connected to the summing input of the counter 7 and the first output of the decoder 6, the fourth output of which is connected to the second input of the element OR B and to the subtracting inputs of the pulse counters 10 and 11, block 12 fixing the end of a series of measurements, the first inputs of which are connected to the outputs of counters 7, 10 and P, the reset inputs of which are interconnected with the reset input of the pulse counter 5

and with the second output of the block. 12, to the second inputs of which the third and fifth outputs of the decoder 6 are connected, the start-pulse bus 13, which is connected to the input of the pulse generator 1, the output of which is connected to the first input of the element OR 3 and to the reset input of the pulse counter 9, the stop-pulse bus 14, which is connected to the input of the driver of the pulses 2, the bus of the initial installation 15, the bus of the result 16, to which the outputs of the pulse counter 9 are connected, the bus alarm 17, which are connected to the first outputs of the block 12, to the third input of which the bus 15 is connected

FIG. 1 shows, for explanation of the operation of the device, an example of the block 12, which contains the element OR 1B, to the inputs of which the first inputs of the block 12 are connected, the element OR 19, the inputs of which are connected to the second inputs of the block 12, And 20, to the second input of which connected to the output of the element OR 19, the element And 21, the first input of which is connected to the output of the ele1 1ENT OR 18 and to the first input of the element And 20, and the second to the second of the second inputs of the I2 unit, the element OR 22, the first input of which is connected to the output of the element And 20 and with the first, from the first outputs of block 12, the element h Supports 23, to the input of which the output of the element OR 22 is connected, the second input of which is connected to the output of the element 21 and the second of the first outputs of the block 12, to the second 1 code of which the output of the delay element 23 is connected, the third input of the block 12 is connected to the third input of the element OR 22

Pulse counters 7, 10, and 11 consist of a pulse counter, the discharge outputs of which are connected to the inputs of the IL-NOT element.

FIG. 2 shows another example of performing block 12 of fixing the end of a series of measurements; it contains an AND 24 element, an OR 25 element, the first and second inputs of which are connected to the first and second inputs of the AND 24 element and the first and second inputs of the first inputs of the block 12, the third the input of the first of which is connected to the third input of the OR 25 element, the OR 26 element, whose inputs are connected to the second inputs of the block 12,

And 27, element 28, the third input of which is connected to the output of the element OR 26, element 29, the first input of which is connected to the output of the element 24 and to the first input of the element 27, the second input of which is connected to the second input of the element 29 , with the first input of the element OR 30 and with the second of the second inputs of the block 12, the third input of which is connected to the second input of the element RITI 30, the delay element 3), the input of which is connected to the output of the element OR 30, the outputs of the elements AND 27, 28 and 29 are connected to the first outputs of block 12, the second input of which is connected to the output element that delay 3.

The duration of the pulses tj,,. Issued by the formers 1 and 2 is chosen so that it is sufficient for the operation of the counters 5 and 9, but less than the total time of the operation of the element OR 3, the counter of pulses 5j of the decoder 6 and the element OR 8.

Pulse counters 5 and 9 on the summing input operate from the leading edges of the pulses arriving at these inputs. When a pulse arrives at the reset input of the counters 5 and 9, they are set to the zero position.

The frequency of the pulses of the generator A is chosen based on the required accuracy of the measurement of time intervals.

The first inputs of the elements And 21, 28 and 29 are inverse, i.e. in the presence of a signal at this input, the corresponding And elements are closed, and in the absence of a signal, they operate in accordance with the signals at other inputs.

The magnitude of the delay T of the elements 23 and 31 is chosen based on the duration of the signal that must be on the input buses of the block 12.

Unit 12 is designed to determine if the results of individual measurements in the series coincide and to generate a device installation signal in the initial state after the end of the series of measurements.

In the case of block 12 of FIG. 1, the signal outputted to the first tire 17 is generated when two of the three results match, and the signal transmitted to the second tire 17 is generated after the end of the measurement of the third interval.

la if in a series of three dimensions

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five

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the results did not coincide. Signal to set the device to the initial, output state is reached within the time T after issuing a signal to any of the buses 17, if the first measurement results coincided, and the second interval is considered S that the measurement series is over and the device is reset. . If, after the measurement has been completed, three consecutive measurements do not result in a coincidence of the two measurement results; then a signal is issued about the end of the series and about the possibility of reading the rezul, .- a tat of a double measurement, the device is installed in the initial live and ready to perform the next series of three measurements,

In the case of a block of 12 ps in FIG. 2, the setup signal to the INITIAL state is always generated through the time T after the termination of a series of measurements of three time intervals, and at the time of termination of the series of measurements a signal is given about how many results coincided. If all three results match, then the signal on the first of the tires 17 comes in, if it is two, then the signal on the second of the tires 17 is output, if there are no results in the measurement series, then the signal on the third of the tires 17 goes. There is information about the coincidence of all three results, if there was such a coincidence.

The device for measuring repeated time intervals operates as follows.

In the initial state, the counters 5, 7, 10, and P are in the zero position: Shee, the counter 9 is in an arbitrary position. There are no signals on the output tires 17. Installation

5 device to its original position; is driven by applying a pulse to the bus 15. When the start-pulse arrives on the bus 13, the driver 1 generates a pulse arriving at the reset input

Q counter 9, which is set to the zero position, and through the element OR 3 to the summing input of counter 5, the contents of which become equal to 1. Open the first output

5 decoder and the generator 4 pulses begin to pass on the summing inputs of counters 7 and 11. When entering then a pulse on the bus 14, the driver 2 generates a pulse.

five

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arriving through the element OR 3 to the summing input of the counter, 5, the content of which HKoe becomes equal to 2, the first output of the decoder 6 is closed and the generator 4 sh-pulses are not passed to any of the outputs of the decoder 6, the counters 7 and 11 write the code the duration of the first time interval. When the second start-impulse arrives on the bus 13, the former 1 emits an impulsej by setting the Living counter 9 to the zero position (or confirming this position; if the counter 9 is already at the zero position) and arriving through the OR 3 element on the summing input of the count 5, the contents of which becomes equal to 3 × Open the second output of the decoder 6 and the pulses of the generator 4 begin to pass on the input of the count 7 to the summation and the input of the counter 8 through the IL 8 to the summing

The input of the counter 9 "On arrival, the 2S Tel 2 outputs a pulse that passes through

The stop pulse to the bus 14, the driver 2, impulses the pulse j that passes through the element of the IPI 3 to the sum of the two; 5, the content of which becomes 4,

The second output of the / -decrambler 6 is closed and a signal arriving at the first of the second inputs of block 2 appears at its third output. In the counters 9 and 10, the code of the duration of the Second time interval is recorded. In the counter 7, the difference of the codes of the duration of the first and second time intervals is recorded E-if the contents of counter 7 is O (i.e., if the measurement results of the first and second time intervals are equal to each other), then the output of the counter 7 is the signal 5 arriving at the first of the first inputs of the block 12.

In case of; if block 12 is made according to FIG. 15, the signal from the first of the first inputs of block 12 passes through the elements OR 18 and K 20 to the first of 17 signals, indicating that nojryc. result with established accuracy and must be considered ,, In addition, the signal from the output of the element And 20 passes through the element IL 22 to the input of the delay element 23, cutting the time T from the output of the delay element 23 passes to the second output, block 12 and further. To the reset inputs of the counters 5 , 7, 10 and 11, through the element IL4 3 to the summing input of the counter 5, the content of which becomes equal to 6, Zak yvaets chetvertsh output of decoder 6 and

The incoming signal on the second of the second inputs of block 2j appears in the 30th of its output. In counter 9, a code of the duration of the third time interval is recorded;

35 of the duration codes of the second and third time intervals, in the counter 1 1 the difference of the codes for the heistness and the first and third time intervals is recorded. If soderu {my account

40 tick 10 or counter P is O (i.e. if the measurement results in the third and third time intervals or the first and third time intervals are equal to each other), then

45 the output of the corresponding counter 1 or 11 appears a signal, arriving at the second or third input from the nth inputs of the block 12, In the case if the block 12 is made as shown in FIG. 1, the signal

50 second or third first

after entering it goes through the elements OR 18 and AND 20 - on the first of the tires 1 7, signaled that the result was obtained with the established reliability

55 and it must be considered. In addition, the signal from the output of the element And 20 passes through the element OR 22 on the delay element 23. To the output of the element 21, the signal from the second, from the second

6

The latter are set to zero, the device has returned to its original state and is ready for the next series of measurements.

If the contents of counter 7 are different from O, then there is no signal at its output and block 2 does not work.

When the third start-pulse arrives on the bus 13, the driver 1 emits a pulse, setting the pulse counter 9 to the zero position and coming through the OR element 3 to the summing input of the counter 5, the contents of which become equal to 5, the signal on the third output of the decoder 6 disappears and its fourth turn off vpsod The impulses of the generator 4 begin to pass to the subtracting inputs of the counters 10 and P and through the element OR .8 to the input of the counter 9, At. the arrival of the third stop pulse on the bar 14, the shape of the IL4 element 3 to the summing input of the counter 5, the contents of which become equal to 6, a quarter of the output of the decoder 6 is closed and

its fifth output will receive a signal, incoming on the second of the second inputs of block 2j. In counter 9, the code of the duration of the third time interval is recorded, in the counter 10 the difference of the duration codes of the second and third time intervals is recorded, in the counter 1 1 the difference of length is recorded. and the first and third time intervals. If the content of the counter 10 or counter P is equal to O (i.e., if the measurement results of the second and third time intervals or the first and third time intervals are equal to each other), then

the output of the corresponding counter 10. or 11 there is a signal coming in to the second or third input from the first inputs of block 12, in case block 12 is made according to fig. 1, the signal

from the second or third of the first

entering through the elements OR 18 and AND 20 - on the first of the tires 1 7, signaling that the result was obtained with the established reliability

and it must be considered. In addition, the signal from the output of the element And 20 passes through the element OR 22 on the input: one delay element 23. To the output of the element 21, the signal from the second, from the second

7

ry input block 12 does not pass, as the element And 21 is closed by the signal from the output of the element OR 18, Through time T, the signal from the output of the delay element 23 passes to the second output of block 1 and further to the reset inputs of counters 5, 7, 10 and 11, which set to zero. The devices have returned to their original state and are ready for the next series of measurements.

If neither the contents of counter 1 nor the contents of counter 11 are equal to O (i.e., if no two of the three measurement results are equal), then the output of the OR element 1 has no signal and then the signal from the second of the second inputs of block 12 (the signal from the fifth output of the decoder 6) passes through the element 21 to the second of the tires 17 to signal that a series of three measurements has been completed, but the result obtained has the reliability of a single measurement. In addition, the signal from the output element AND 21 passes the element OR 22 to the input of the delay element 23. Through time G, the signal from the output of the delay element 23 passes to the second output of the block 12 and further to the reset outputs of counters 5, 7, 19 and 11, which set to zero. The device has returned to its original state and is ready for the next measurement series.

In the event that block 12 is made in accordance with FIG. 2, then when the first one of the second inputs from the third output of the decoder 6 appears and the first one of the first inputs (from the output of the counter 7) is present, the OR 25 26, E 28 k elements trigger the second bus 17 signal. When the signal on the first of the first inputs is missing, there is no signal on the BOE from the second inputs, block 12 does not work and does not output signals to bus 17. If, when a signal appears on the second of the second inputs of block 12 (from the fifth output of the decoder 6) signals on the first and second of the first inputs of block 12 (which means. THAT and The third of the first inputs also has a signal, and an element 27 is triggered, and a signal is given to the first of the signal 17. If there is a signal at the second of the second inputs of block 12, there is a signal either at the second or at the third

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from the first inputs of block 12, the element E28 is triggered and a signal is output to the second of 1 PIN 17. If when a signal appears at the second nz of the second inputs of block 12, the first inputs of block 12 do not have a signal, then element 29 turns on and outputs a signal to the third bus 17. When a signal appears at the second of the second inputs of block 12, it starts up through element OR 30 delay element 3, from the output of which, after time G, a second signal is sent to the second output of block 12, which sets the device to its initial position and prepares it for work) with subsequent series of time intervals.

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Claims (1)

20 claims five five 5 Q 5 0 five 0 A device for measuring repetitive time intervals containing a pulse generator, the first OR element, the first input of which is connected to the Stop bus, and the second input is connected to the Start bus and the reset input of the first pulse counter, the second, third and fourth pulse counters and fixing unit the end of a series of measurements, so that, in order to expand its functionality, a second OR element and a sequentially connected fifth pulse counter and a decoder are introduced into it, with the outputs of the second, third and h Fourth pulse counters are connected to the first group of inputs of the fixing end block of the measurement series, the second group of inputs of which is connected to the third and fifth outputs of the decoder, the first output of which is connected to the summing inputs of the second and fourth pulse counters, the second output of the decoder is connected to the subtracting input of the second pulse counter , with the first input of the second OR element and the summing input of the third pulse counter, the fourth output of the decoder is connected to the readout inputs of the third and fourth pulse counters and with the second input of the second OR element, the output of which is connected to the summing input of the first pulse counter, while the output of the fixing block of the end of the series of measurements is connected to the reset input of the second, third, fourth and fifth pulse counters, the summing input of the fifth pulse counter is connected with the release of the first 144833610 element OR, and the output of the pulse generator is connected to the input of the decoder. Compiler R.Matveeva Editor M.Tovtin Tehred M.Didyk Order 68.46 / 52 . Circulation 373 VNIIPI State Committee on Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, 4/5 Raushsk nab. The production of a pre-graphic enterprise, the town, Ul. Project, 4 Faye.1 Corrector G, Reshetnik Subscription