SU1018211A1 - Pulse shaper - Google Patents

Description

The invention relates to automation and computing and can be used in control devices, synchronizers, electronic switches and other devices.

A pulse shaper is known, comprising a generator, a frequency divider, a comparison device, a registrar, a program block, a refinement circuit, a pulse shaper and a reset of frequency divider 1.

However, this pulse shaper produces a sequence of pulses, which also have only a predetermined pulse duration and duty cycle, which limits its scope.

Closest to the invention in its technical essence is a pulse shaper, which comprises a generator, a control unit, two triggers, a switch, and a switch. At the same time, the generator output is connected to the input of the switch, another input of which is connected to the output of the first trigger, and the third input of the switch is connected to the output of the control unit connected to the inputs of the pulse former. The output of the switch is connected to the input of the second trigger 21.

However, this pulse shaper produces a sequence of pulses that also have only a constant pulse duration and duty cycle, which limits its scope.

The aim of the invention is to expand its field of application by allowing programmatic change, duration of the duty cycle pulses, and period.

The goal is achieved by the fact that a pulse driver containing a generator, a switch, two triggers and a control unit, the direct output of the generator is connected to the first input of the switch, the second input of which is connected to the output of the first trigger, and the third input of the switch control, the inputs of which are the first inputs of the pulse driver f, and the first output of the switch is connected to the first input of the second trigger, two frequency dividers are introduced, the information inputs of which are Are the second inputs of form 182112

world leader, the first, third, third and fourth control inputs of which are connected respectively to the second and third outputs of the control unit, laziness, to the first and second outputs of the switch, the inverter output of the generator and the second input of the control unit, and the output of the first frequency divider is connected to the third input, Q of the control unit and to one input of the first trigger, the other input of which is connected to the third output of the control unit J and the output of the second frequency divider is connected to the fourth j input of the control unit, and the switch outputs The bodies are connected directly and through the second trigger to the outputs of the pulse former.

Each of the frequency dividers was executed in the form of serially connected register of the block of elements I, you ™ of the reading counter and the element I, while the second inputs of the pulse former are connected to the information

2 - the inputs of the registers whose control inputs are connected to the second output of the control unit, the third output of which is connected to the control inputs of the blocks of elements I. The counting inputs of the subtracting counters of the first and second frequency dividers are connected respectively to the first and second outputs of the switch S control inputs elements M are connected to the inverted output of the generator, and the outputs

 And elements are the outputs of the divider.

Figure 1 presents the structural diagram of the proposed pulse shaper; FIG. 2 is a timing diagram explaining the operation of a pulse former.

The pulse shaper contains a generator 1, a switch 2, triggers 3 and and a control block 5 with outputs 6, dividers 7 and 8. At the same time, the output of generator 1 is connected to the input of switch 2, the second input of which is connected to the output of trigger 3, and the third input switch 2 is connected

With the output of control unit 5, the inputs of which are the first inputs of the pulse former. The output of switch 2 is connected to the trigger input.

5 Frequency divider 7 consists of serially connected register 9, block of elements And 10, subtractive counter 11 and element 12 and. Frequency divider 8 consists of a series-connected register 13, a block of elements HI, a subtractive counter 15, and element 16 I. A control block 5 consists of elements 17 and 18 AND, elements 19 and 20 OR, and element 21 OR-NOT. At the same time, the inputs 22 and 23 of the pulse body connected to the external control unit are connected respectively to the inputs of registers 9 and 13, the control inputs of which are connected to the output of element 19 OR The control inputs of the blocks of the .10 and AND modules are connected in parallel to the output of the element 20 OR and to the input of the trigger 3, the other input of which is connected to the output of the element 12 AND and to the input of the element 17 I. The other input f and bX4 1 I ÜL I / g I V Vyri L. element 17 And is connected to the input element 19 OR ,. Another input of element 19 OR is connected to the second of the device inputs b, to the input of element 21 OR NOT and to the input of element 18 AND, the second, whose input is connected to the inverse output of generator 1 and to the control inputs of elements 12 and 1b and output element 18 AND connected to the input element 20 OR, the second input of which is connected to the output of the element .16 I. Third IO inputs 6 of the device connected to the second input element 21 OR NOT connected to the control input of switch 2. One output of switch 2 is connected to the counting input of the subtracting counter 11 and to the second the trigger input, the outputs of which are the outputs 2 of the pulse generator, the other outputs 25 of which are connected to the inputs of the trigger k. The other output of the switch 2 is connected to the counting input of the subtracting counter 15 and to the first input of the trigger k. The pulse former operates as follows. Under the action of the Start signal {on one of the device inputs 6) codes proportional to the duration of the positive and negative pulses for one period (coming from B1 of the control unit) from inputs 22 and 23 are first written to registers 9 and 13, respectively, and then rewritten via blocks of elements 10 and 14 And, respectively, in subtractive sweepers 11 and 15 with a new connection of a counting input and a subtractive meter 11 to the output 114 of the generator 1 via switch 2 using trigger 3. Next, when the pulse is removed, reklyuchatel 2, in which. In this case, it passes pulses from the output of generator 1 to the counting input of subtractive counter 11 and, respectively, to one of outputs 25 (a series of pulses and an output (potential. When resetting subtracting IT counters, output pulse 12 is formed at the output of the trigger switch 3 to the opposite steady state which sets switch 2 to a different position, while the pulses from the output of generator 1 are fed to the counting input of the detracting counter 15 and, accordingly, to the other from outputs 25 (pulse train). i. 2k output (potential When zeroing out the subtracting counter 15 at the output of element 16, an impulse is generated that goes to another of the inputs of element OR, and which is equivalent in effect to the start impulse. At the same time, the information from the outputs of registers 9 and 13 is rewritten into subtractive counters 11 and 15 , and the trigger 3 is set to its original state, which pushes the output of the generator 1, to the counting input of the readout counter 11 via switch 2. When the readout is zeroed. the counter 11 at the output of the element 12 I generates a pulse that switches the trigger 3 into the opposite stable state, which sets the switch 2 to the position that transmits pulses from the output of the generator 1 to the count input of the subtracting counter 15. When the subtractor 15 is zeroed, the output 15 is formed a pulse, which is equivalent to the action of the Start pulse, after which the operation cycle is repeated. When a potential signal is applied to the input 6 Automatic correction when changing each of the periods, new codes can be entered that are proportional to the duration of the positive and negative pulses for each of the periods, and thereby automatically control the duty cycle, period and duration of the pulses. When a potential signal is applied, the Stop to one of the inputs 6 blocks the outputs of the switch 2 (as in the presence of the Start-up impulse) and thus the operation of the impulse driver is stopped. When the signal is removed, the Stop impulse driver starts to work from the same fixed state Positive The technical effect of the use of a pulse former, unlike the prototype, is to expand the scope of use by providing

A & g. 11 and the formation at its input of pulses of any duration and duty cycle, following with any period, which can be changed programmatically during the formation of a pulse sequence, while in the E prototype these parameters (duration, duty ratio and period) cannot change Formation process -% of pulse sequence. ppppppppp ppppp;

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Claims (2)

1 PULSE FORMER, containing * a generator, a switch two triggers and a control unit, while the direct output of the generator is connected to the first input of the switch, the second input of which is connected to the output of the first trigger, and the third input of the switch is connected to the first output of the control unit, the inputs of which are the first inputs of the pulse shaper, and the first output of the switch is connected to the first input of the second trigger, which is different in that, in order to expand the scope by providing software To change the pulse duration, duty cycle and period, two frequency dividers are introduced into it, the information inputs of which are the second inputs of the pulse shaper, the first, second, third and fourth control inputs of which are connected respectively to the second and third outputs of the control unit, to the first and second switch outputs, to the inverse output of the generator and to the second input of the control unit, and the output of the first frequency divider is connected to the third input of the control unit and to one input of the first trigger, the other input to torogo connected to the third output of the control unit, and the output of the second frequency divider is connected to a fourth input of the control unit, and outputs the switch are connected directly and via a second flip-flop outputs the pulse shaper. 2. The shaper according to claim 1, wherein each of the frequency dividers is made in the form of a series-connected register, a block of AND elements, a subtracting counter and an AND element, while the second inputs of the pulse shaper are connected to the information inputs of the registers, the control inputs of which are connected to the second output of the control unit, the third output of which is connected to the control inputs of the blocks of elements I. the counting inputs of subtracting counters of the first and second frequency dividers are connected · respectively with the first and second, in the output of the switch, the control inputs of the elements AND are connected to the inverse output of the generator, and the outputs of the elements AND are the outputs of the dividers. SU,.,. 1018211 ί