SU611175A1 - Digital meter of time interval series - Google Patents

Description

the second input of the second NAND element, the third input of which is connected to the second input of the fourth NAND element and the output of the reference generator, the output of the fourth NAND element is connected to the inverse input of the additional trigger nerve, the output of the inverter is connected to one of the inputs of the attem NAND, the second input of which is connected to the inverted output of the pulse former, and the output to the installation input of the zero bits of the counter, the counting input of which is connected to the output of the reference generator, the forward output of the pulse former, is connected to torymi inputs of AND gates whose outputs are connected to inputs of the recording unit.

FIG. 1 shows a diagram of the described device; in fig. 2, 3 - time diagrams of his work.

The meter contains a reference generator 1, three RS-flip-flops 2, 3, 4, five elements AND-NOT 5-9, inverter 10, driver 11 pulses, counter 12, elements AND 13, 131, the number of which can vary depending on the number of bits in the counter is 12 and is equal to e, and the recording unit is 14.

The junction point 15 of the direct input 16 of the trigger 2 and the input 17 of the NE-NE element 7 form the meter input. My output 18 of the flip-flop 2 is connected to the input 19 of the I-NOT 5 element, the output 20 of which is connected to the direct input of 21 flip-flops 3 and the input 22 of the I-NE element 8. The input 23 of the I-NE 8 element is connected to direct output 24 of trigger 3, inverse output 25 of which is connected) with input 26 of element AND - NO 7. Output 27 of element IS-HE 8 is connected to the right input 28 of triter 4, input 29 of inverter 10 and input 30 shaper 11 pulses. Inverse input 31 of the trigger 4 is connected to the output 32 of the element H-HE 7.

Direct my .-. 1 33 flip-flop 4 is connected to the input 34 of the element H-HE 6, and the inverse output 35 to the inverse input 36 of the flip-flop 2 and to the input 37 of the element I-Hg 5. The flip-flop 2 has an inverse output 38.

The input 39 of the element AND-NOT 5 is connected to the input 40 of the element AND - NOT 6 and the output 41 of the reference generator 1. The output 42 of the element AND - NOT 5 is connected to the inverse input 43 of the trigger 3;

The output 44 of the inverter 10 is connected to the input 45 o; 1-IE output 9, the input 46 of which is connected to the inverse output 47 of the former 11 pulses. The output 48 of the element AND-NOT 9 is connected to the input 49 of setting the zero bits of the counter 12, the counting input 50 of which is connected to the output 41 of the reference generator 1. The actual output 51 of the driver 11 pulses is connected to the inputs 52, 521 of the elements And 13, 131 The inputs 53, 531 of which are connected to the outputs 54, 541 of the bits of the counter 12. The outputs 55, 551 are connected to the inputs of the recording unit 14.

The operation of the meter is carried out as follows (Fig. 2, 3).

In the initial state of npHMie, the outputs 18, 24, 33 of the flip-flops 2, 3, 4 have the potential, the co-1t is normal to the 1st level of logic zero (further the zero potential), the input 15 of the meter is supplied with the potential corresponding to the level of the logical unit (further - single potential).

When a negative pulse is input to input 15 (plot 15, fig. 3), which determines the beginning ti (t2) of the next time interval (ti-ti), trigger 2 switches, and at its forward output 18 a single potential appears, enters the input 19 of the element AND-NOT (schedule 18, Fig. 3). A positive polarity pulse from the output 41 of the reference generator 1 (plot 41, fig. 3), having a place during the switching of trigger 2, or the first output pulse of the reference generator formed during switching

the trigger 2 causes the appearance of a zero potential at the output 20 of the element IS-HE 5, which switches the trigger 3 so that a single potential is established at its forward output 24. This potential comes

to the input 23 of the element AND-NOT 8, to the second input 22 of which a signal is output from the output 20 of the element AND-NOT 5 (chart 20, fig. 3). Upon termination of the action of the reference generator 1, a single potential appears at the output 20 of the element AND-HE 5, which causes the output of the element AND-HE 8 (plot 27, fig. 3) of the zero potential to appear at the output 27 4 in such a way that a unit potential appears at its output pm 33 (plot 33, fig. 3). This potential and the input to the input 34 of the element AND-NOT 6. The zero potential comes from the inverse output 35 of the trigger 4 (chart 35, Fig. 3). on the inverse input 36 of the trigger 2 and the input 37 of the element AND NOT 5.

The following impulse from the output 41 of the reference generator 1 (plot 41, fig. 3) causes the output 42 of the element 6 to produce a zero potential, which triggers the trigger 3 to its initial state, in which the unit potential arriving at the inverse output 25 of the last entrance 26

of the NAND element 7. If by this time at the input 15 the meter has established a single potential (the action of the input pulse is completed - graph 15 (1), Fig. 3), the output potential 32 of the NAND 7 element has a zero potential,

switching trigger 4 to the initial state. If a zero potential is present at the input 15 (the input pulse has a longer duration — plot 15 (2), fig. 3), then the zero potential does not work at the output 32 of the NAND 7 element until the input

15, a single potential is not established (plot 32, Fig. 3), after which the trigger 4 is switched to the initial state. Trigger 2 returns to its initial state (plot 18, fig. 3) at the time of the appearance of a single potential at input 15 (plot 15, fig. 3), if at that time output 35 of trigger 4 (plot 35, fig. 3) - zero potential, or at the time of the appearance of a zero potential at the output 35, if by that time at the input 15 of the meter there is a single

potential.

Thus, at the output 27 of the element AND- HE 8, an impulse of negative polarity r is formed (plot 27, fig. 3), coinciding in time with the pause of the signal of the reference generator 1, following the first pulse, coinciding with the measured time interval.

A negative polarity pulse from the output 27 of the element IS-HE 8 (chart 27, figs. 2, 3) is fed to the input 30 of the pulse shaper 11 and to the input 29 of the inverter 10. The shaper 11 forms a negative polarity pulse r, on the inverse output 47 (plot 47, fig. 2) and a positive polarity pulse on the forward, output 51, the duration of which is chosen to be approximately equal to half the pulse duration at its input 30.

The signal from the inverted output 47 of the driver 11 is fed to the input 46, the element AND NOT 9, the second input 45 of which receives the signal from the output 44 of the inverter 10. The output 48 of the element 9 produces a negative polarity pulse G), which coincides with the time interval from the end of the pulse ti at the output 47 of the driver 11 until the end of the pulse g at the output 44 of the inverter 10 (plot 48, fig. 2).

The pulse from the output 48 of the element IS-HE 9 is fed to the input 49 of the zero-bit setting of the counter 12.

A positive polarity pulse from the direct output 51 of the imaging unit 11 is fed to the inputs 52, 521 of the elements 13, 131, to the second inputs 53, 53I of which a signal is fed from the outputs 54, 541 of the bits of the counter 12. Appearing at the outputs 55, 551 elements And 13, 13i signals are fed to the inputs of the registering device 14.

Thus, in the meter, an impulse r arrives at the input 30 of the imager 11 (plot 27, Fig. 2), whose leading edge coincides with the first after the start of impulse 1 (2), which defines the boundary of two adjacent time intervals (ti-t) and ( ), the falling edge of the pulse of the reference generator 1 (plot 41, fig. 2), and the falling front with the leading edge of the pulse of the reference generator following it, regardless of the duration and pulse 1 (2, 3) (plot 15, fig. 2 ), defining the boundary of time intervals. This pulse is a normalized time interval, which denotes the boundary of adjacent time intervals shifted in time by one pulse period of the reference generator 1.

During this intermixing time, with the help of the throttle 11 and the inverter 10 connected to it and the element AND-HE 9 forms 6

a pulse G1 of reading information from counter 12 (plot 47, fig. 2) and an impulse r of setting it to its initial state (plot 48, fig. 2).

Claims (2)

1. Copyright certificate № 334542, cl. G 04 F 10/06, 1972. 2. Copyright certificate N ° 208038, cl. G 04 F 10/04, 1967.