SU1529427A1 - Device for time separation of two sampled signals - Google Patents

Abstract

The invention relates to automation and pulse technology and can be used in various control and monitoring systems. The purpose of the invention is to increase the reliability of the device. The device contains triggers 1 and 2, shaper 5 pulses, delay elements 6 and 7, inputs 8 and 9, outputs 10 and 11. Introduction to the device of the elements OR-NE 3 and 4 ensures the formation at the device outputs of two separated in time and stable in duration pulse signals. The sequence of generation of the output signals is determined by the mutual timing of the pulse signals at the input of the device. 1 il.

Description

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The invention relates to a pulse technique and can be used in various control and monitoring systems.

The purpose of the invention is to increase the reliability of the device.

Fig. 1 shows a block diagram of a device for temporarily separating two pulse signals; figure 2 - timing charts of the device.

A device for temporarily separating two pulse signals contains the First 1 and second 2 triggers, the first 3 and second A elements OR NOT, the driver 5 pulses, the first 6 and second 7 delay elements, the first 8 and second 9 inputs and the first 10 and second 11 outputs devices.

The first input of the first trigger 1 is connected to the first input of the device.

8, the first input of the second trigger 2, is connected to the second input of the device

9, the inverse outputs of the flip-flops 1 and 2 are connected respectively to the first inputs of the elements OR-NOT 3 and 4, and the output of the first element IL1-HE 3 is connected to the input of the first element

6 delay, the second input of the first trigger 1, the second input of the second element OR NOT 4 and the input of the imaging unit 5 pulses, the output of which is connected to the third input of the second element OR NOT 4, and the output of the latter to the input of the second delay element 7, the second input of the second trigger 2 and the second input of the first element OR — NO 3, the first and second outputs 0 and AND of the device are the outputs of elements 6 and

7 delays connected to the third inputs of the triggers 1 and 2.

The inverse output of the first or second trigger is transferred to the state O by applying a level 1 to the first input of the trigger, and to the state It 1 II

by simultaneous filing

to the second and third inputs of the trigger.

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The pulse shaper is designed to Normalize a pulse of a given duration over the differential signal at the driver input from a level O to 1.

The device works as follows.

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After power on the device does not require initial installation from the outside.

In the absence of pulses at the inputs of the device, it is set to the zero state by the outputs automatically during a time not exceeding the delay time of the delay elements 6 and 7.

If, during the operation of the device, a pulse signal appears at the first input 8 of the device (case 1 in Fig. 2), the inverse output of the first trigger 1 goes to the zero state, the output of the First element OR-NO 3 is set to a single level and After a time equal to the delay time of the delay element 6, a pulse appears on the first output 10 of the device, after which two units on the second and third inputs of the first trigger 1 invert the output of the lane; the south trigger 1 turns back to the unit state, the output of the first ale COPE OR NOT 3 - to the zero state, and after a delay time on the First element 6, the pulse disappears at the first output of the device 10.

If during the pulse generation at the first output 10 of the device, a pulse signal arrives at the second input 9 of the device, then the inverse output of the second flip-flop translates to the zero state, but the output of the second element OR NOT 4 does not change its zero state, so. as on the second one. At the entrance there is a single level. The state of the second element OR-NOT 4 is changed only when a pulse appears at the first output 10 of the device and, as a result, the inverse output of the first trigger 1 takes a single value, and the output of the first element OR-NO 3 is zero. After that, a delay at the second output 11 of the device appears with a delay at the second delay element 7, two units at the second and third inputs of the inverse of the second flip-flop 2 turn into a single connection, the output of the second element — OR 4 at zero and with a delay on the second delay element 7, the pulse at the second output 11 of the device ends.

Thus, at the outputs of the device, two pulses are formed successively in time. In this case, the duration of the pulses does not depend on the duration of the input pulses and their relative position in time and is determined only by the delivery time of elements 6 and 7.

When the First appears a pulse signal at the second input 9 of the device, the algorithm of the device operation remains the same and differs only in that the first 1 and second 2 triggers first 3 and second 4 elements OR NOT, first 6 and second 7 elements interchange Delays The first 8 and second 9 inputs and the first 10 and second 11 outputs.

Pulse signals can appear simultaneously on both device inputs (. Case 2 in Fig. 2. In this case, the inverse outputs of the first 1 and second 2 triggers simultaneously go into the nude state and then the first 3 and second A elements OR NOT switches to the single state, the pulse shaper 5 generates a pulse at its output, but the state when the outputs of both elements of RSHI-HE 3 and 4 are in the single state. It is not stable because the connections from the output one element OR NOT to the second input of the OR-NOT element and both of the OR-NOT elements again go to the zero state, etc. To exclude the described generation, a pulse generator 5 is used, which after the Transition of the first element OR-NOT 3 to the zero state continues to generate a pulse preventing transition of the second element OR NOT 4 in. single state

Thus, the first element OR-NOT 3 is set to one, blocking the transition to the single state of the second element

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OR-NOT 4. Then the impulse is first formed at the first output 10, and then at the second output P of the device.

Thus, with the simultaneous arrival of pulse signals to both inputs of the device, the First Input 8 of the device takes priority.

Claims (1)

Limitations on the minimum duration of the input pulses are determined only by the speed of the trigger inputs and, for the HELR and ECL, the IC is one and tenths of nanoseconds. Invention Formula A device for temporarily separating two pulse signals, comprising two delay elements, a pulse driver. The first and second triggers, the first input of the first trigger connected to the first input of the device, characterized in that, in order to increase the reliability of the device, 25 The first and second elements OR NOT are inserted in It, the first input of the second trigger connected to the second input of the device , the inverse outputs of the first and second triggers are connected respectively to the first inputs of the first and second OR-NOT elements, and the output of the first OR-NOT element is connected to the input of the first delay element, the second input of the first trigger, the second input ohm of the second element OR NOT and the pulse driver input, the output of which is connected to the third input of the second element OR NOT, and the output of the last element to the input of the second delay element, the second input of the second trigger, the second input of the first element OR NOT, and the first and second The outputs of the device are the outputs of the first and second delay elements, respectively, also connected to the third inputs of the first and second triggers, respectively. thirty 35 40 45 Fie.2