SU561193A1 - Analog-digital quad - Google Patents

Description

The invention relates to the field of automation and computer technology, in particular, to devices implementing the erection of a pulse signal in duration of time with the result represented in digital form.

A device for squaring AND, containing counters of pulses, elements AND and NOT, a generator of pulses and a start-stop circuit, is known.

It is also known a device for raising to degree 2, containing a saw-head generator, voltage, exciter generators, comparator, driver, memory block, delay element, and repeater.

The design complexity of such devices is due, in particular, to the need to introduce additional shape converters of the input or output signal.

The closest in technical essence to the invention is an analog-to-square quadrant 3, containing a reversible counter, connected by zeroing input to the first output of the delay element, a linearly varying voltage generator, the output of which is connected to the input of the first controlled frequency generator, the connected output to the first input of the first element And, the second input of which is connected to the output of a trigger connected by the first input to the launch input of the quad, and to the first input of the second epeite I connected by the second in the course with the output of the second generator of the controlled frequency. The bit outputs of the reversible counter are connected to the first inputs of the group of output elements And, connected by the second inputs to the second output of the delay element. However, this quad has fast speed and has a large amount of equipment.

The purpose of the invention is to simplify the quad and increase the speed of calculations.

This goal is achieved by the fact that a pulsed coincidence exclusion node, connected by inputs to the first and second I and T springs of the first and second elements AND, respectively, to the summing and subtracting inputs of the reversible counter, was additionally inserted into the proposed device. The input of the second oscillator of the controlled frequency is connected to the generator output of a linear - varying voltage connected by the first input to the quad start input, and the second to the quad stop input, the input of the delay element and the second trigger input.

The drawing shows a block diagram of the device.

The analog digital quad contains a generator of linearly varying voltage 1, two oscillators of controlled frequency 2 and 3, two elements AND 4 and 5, trigger 6, a reversible counter 7, a delay element 8, a group of output elements AND 9, and a pulse coincidence exclusion node 10 .

The quadrator starts working with the arrival of the Start pulse, which defines the beginning of the interval TX transformed by the speMeiffloro, which nepS triggers, opens the AND 4, 5 elements in one state and starts the generator, the output voltage of which changes according to the law.

 The output voltage of the oscillator 1 controls the frequency of the oscillators 2 and 3, which generate short pulses with frequencies, respectively, equal.

,, n.

By an impulse stop, defining the end of the time interval TX, the trigger 6, closing elements AND 5 and 4, returns to the initial state, and the generator 1 stops. The output pulses of the generators 2 and 3 through the elements 5.4 and controlled by the output trigger voltage 6, and through the pulse coincidence exception node 10, respectively, are fed to the summing and calculating tayunday inputs of the counter 7. The elements AND 4.5 are open B for the time TX- The numbers NI, N of the pulses arriving at the summing and subtracting inputs of the counter 7 are equal

ith

2

N .. V,

The total number of pulses recorded by the counter 7 after the arrival of the impulse Stop is equal to

 NI - N2 to-Gx

Impulse Stop, ending the operation of the quadrant, is delayed by a section of the delay element 8 and arrives at the second inputs of the output elements AND 9, the first inputs of which are connected to the discharge outputs of the counter 7. At the same time, the switch N is transmitted to external circuits. Additionally, delayed by the remaining part of the delay element 8, the same impulse discharges the readings of the screen 7, thus preparing it for a new operation.

Using the proposed analog-to-quad quadrant for performing the quad operation of time intervals will significantly reduce the conversion time, since the operation itself takes place over the time of the input conversion interval TX.

The small amount of equipment allows to significantly reduce the device setup and increase the reliability of its operation.

Claims (3)

Invention Formula 15 An analogue numeric quadrant containing a reversible counter connected by zeroing input to the first output of the delay element, a generator of linearly varying voltage, the output of which is connected to the input of the first controlled frequency generator connected by the output to the first input of the first element I, the second input of which is connected to the trigger output connected by the first input to the quadrant start input, and with the first input of the second element, connected by the second input to the output of the second controlled frequency generator, and the discharge The reverse outputs of the reversible counter are connected to the first inputs of a group of output elements And connected by second inputs to a second output of a delay element, characterized in that, in order to simplify the quad and increase the speed of the calculations, a pulse coincidence exclusion node is inserted into the first and second outputs. the second elements And, outputs - respectively to the summing and outputting inputs of the reversible counter; moreover, the input of the second generator controlled frequency is connected to the output of the ramp voltage connected by the first input to the quad start input, and the second to the quad stop input, the input of the delay element and the second trigger input. Sources of information taken into account during examination: 1, USSR Author's Certificate No. 419889, class, G 06 F 7/38, 1972. 2. USSR author's certificate № 424169, cl. G 06 G 7/20, 1972. 3. USSR author's certificate N 444220, cl. G06J3 / 00, 1973.