SU1277101A1 - Device for reproducing quadric dependency - Google Patents

Abstract

The invention relates to the field of computing, and allows to increase the accuracy of reproduction of the quadratic dependence. The device contains a period counter, a control counter, a result counter, two keys, three controllable frequency dividers, a pulse generator, and a one-shot with corresponding connections. The accuracy in the device is achieved by preliminarily averaging the periods of the input frequency at the period counter and establishing the corresponding division factor in the first and second controlled frequency dividers. After that, the corresponding conversion of the input frequency into a quadratic dependence is performed. 1 il.

Description

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The invention relates to computing and measuring technology and can be used to process the readings of frequency sensors.

The purpose of the invention is to improve the accuracy

The drawing shows the proposed device.

The device contains a result counter 1, the first 2 and second 3 controlled frequency dividers, a 4 period counter, / connected by a counting input to the information input 5 of the device, a third controlled frequency divider 6, the first and second 8 keys, and a generator 9 pulses, a control counter 10 and a one-shot 11,

The device works as follows.

At the end of the p-th cycle of operation, the single vibrator 11 generates a pulse that brings the circuit to its initial state. After that, the first pulse of the input frequency at the input 5 starts the counter 4 periods, to generate 1Y on the second output the signal of the duration

t-t - t

@ L -

where L is the averaging coefficient of the input frequency 5 by the counter 4 of the period T - the singing of the information input X

him signal.

The installation signal opens the second key 3 and permits the passage of pulses from the output of the controlled divider 6, frequency ya, the inputs of the coefficient setup, the division of the first 2 and second 3 controlled frequency dividers, designed so that their division ratio is equal to the number of pulses installation input. Thus, the division factors K-w K ,, controlled dividers 2 and 3 frequencies are set equal to

K -K j, S to..t about

where K is the division ratio of the controlled divider 6 frequency j

1 T is the period of the pulses of the generator frequency base9 By removing the setup signal: the division factor 4, the period counter 4 generates a signal at the first output allowing the control counter 10 to start. In this case, at the first output of the control counter 10, a signal is generated.

About s

0 5

0

5 s

five

O

012

This opens the first key 7., and the pulses from the generator 9 through the controlled dividers 2 and 3 begin to flow into the counter 1 of the result. Next, the control counter 10 counts N pulses from the generator output 9 and then closes the first key 7. After the first key 7 is closed, the number of pulses V recorded in counter 1 is equal to

N N C V --- ---- 2 A.f2

K K, L2- f2% H

  t o

where A is the scale factor chosen (by changing the parameters of the circuit N, K, L, f) based on the accuracy and speed requirements for a particular task.

Next, the counter 10 counts another M-N pulses, i.e., it drains the delay necessary to record the result V from the counter 1, and outputs a signal to the one-shot 11, which produces a pulse that brings the circuit to its initial state. Scheme prepared for the next cycle of work.

Claims (1)

ND × 11 The invention relates to computing and measurement technology and can be used to process readings of frequency sensors. The purpose of the invention is to improve the accuracy. The drawing shows the proposed device. The device contains a result counter 1, the first 2 and second 3 controlled frequency dividers, a period counter 4, / connected by a counting input to the device information input 5, a third controlled frequency divider 6, the first and second keys 8, a pulse generator 9, a control counter 10 and one-shot 11, the Device operates as follows. At the end of the p-th cycle of operation, the oscillator 11 generates a pulse that brings the circuit to its initial state. After that, the first impulse of the input frequency at input 5 starts with a 4-period counter, generate a 1-second signal at the second output of a setting of duration t - t - t @ L - where L is the averaging factor of the input frequency5 with counter 4 periods of T - the information signal input X of its signal. The installation signal opens the second key 3 and permits the passage of pulses from the output of the controlled divider 6 hours to the inputs of the coefficient setting, the dividing agent of the first 2 and second 3 controlled frequency dividers, so that their division ratio is equal to the number of pulses received installation input. Thus, the division factors K -w K, controlled dividers 2 and 3 frequencies are set equal to K -K j, S k.t where K is the division factor of the controlled divider 6 frequency j 1 T - the period of the base frequency pulses generator 9 By removing the setup signal: the dividing ratio of the counter 4 periods generates, on the first output of the signal, allowing the start of the counter 10 of the control. In this case, at the first output of the control counter 10, a signal 12 al is generated, opening the first key 7., and the pulses from the generator 9 through the controlled dividers 2 and 3 begin to arrive the counter 1 of the result. Next, the control counter 10 counts N pulses of the output of the generator 9 and then closes the first key 7. After closing the first key 7, the number of pulses recorded in counter 1 is equal to NN К V --- ---- 2 A.f2 К K, L2- f2% P t o where A is the scale factor chosen (by changing the parameters of the circuit N, K, L, f) based on the accuracy and speed requirements for a particular task. Next, the counter 10 counts another —N pulses, i.e., it drains, delays the delay needed to record the result V from counter 1, and outputs a signal to the one-shot 11, which produces a pulse that brings the circuit to its initial state. Scheme prepared for the next cycle of work. The invention The device for reproducing a quadratic dependence, containing a pulse generator, a first key, a period counter, a control counter and a result counter, whose information output is the output of the device result, the information input is connected to the counting input of the period counter, the first output of which is connected to the counter lock input control, the impulse generator is connected to the information input of the first key, characterized in that. that, in order to increase accuracy, a single vibrator is introduced in three, one: 1 mobile frequency divider and a second key, the second output of the ceriod counter pod.pyuchr-n to the control input of the second key, the counting input of the control counter is connected to the generator output pulses, the first information output of the control counter is connected to the control input of the first key, the output of which is connected to the information input of the first controllable frequency divider, the input of the installation of the division factor of which is connected to the output of the second key and the division ratio of the second controlled divider is often31277 You, whose information input is connected to the output of the first controlled frequency divider, and the output is connected to the counting input of the result counter, the information input of the third controlled 5th frequency divider, is connected to the output of the pulse generator, and the output is connected to the information input of the second key, the second information output of the period counter is connected to 014 to the control input of the second key, the second information output of the control counter is connected via a one-shot to the reset inputs of the period and result counters and the first to third controlled frequency dividers, the input of the division factor of the third controlled frequency divider is the input of the initial setup of the device.