SU1350842A1 - Device for selecting channels with extreme mean voltage - Google Patents

Abstract

The invention relates to communication technology and improves the accuracy of estimating the degree of correctness of the choice of a channel with extreme average voltage. If the number of channels with an extreme average voltage is greater than one (their values differ by an amount within the resolution of the first comparator 18), then the voltage level at the output of the N-input adder 8 will exceed the level of the reference voltage and at the output of the second comparator 9 on vits zero signal. The signal coming to the gate input device, the voltage from the output differential. amplifier 7 through the private key I2 will not be input. Device evaluation, on which there will be a zero voltage level, characterizing the worst result of evaluating the accuracy of the degree of correctness of the channel selection with extreme average voltage. 1 il. with 3 O) eo

Description

The invention relates to a communication technique and can be used in information receiving devices.

The purpose of the invention is to improve the accuracy of the evaluation of the wall of the correctness of the choice of the channel with extreme average voltage.

The drawing shows a structure-wiring diagram of a channel selection device with an extreme average voltage.

The device for selecting a channel with an extreme average voltage contains the second 1 and the first 2 triggers, the generator 3 sawtooth voltage, the first 4, third 5 and second 6 elements OR, differential amplifier 7 N-input adder 8, second M-Parator 9, first 10 and fourth 11 elements And, - the first key 12, counter 13, integrator 4, fourth 15, second 16 and third 17 keys, first comparator 18, quarter 19 and third third triggers, second 21 and third 22 elements And, N processing channels 23 .

The device works as follows.

Integrators 14 services: at for averaging high-speed interference voltages in channels, fourth keys 15 connect at the time of channel selection with the maximum average national outputs of integrators 14 from the input of comparators 18, to the inputs of the first voltage comparators 18, from generator 3, a linearly varying voltage is applied to the selection time. Fourth triggers 19 rumor-; at for short-term memorization of the channel with extreme average stress.

The second trigger 1 starts the sawtooth generator 3 and opens the fourth keys 15 for the duration of the selection. The first element OR 4 generates a reset pulse of the fourth triggers 19. The third triggers 20 serve to memorize the channel number with an extreme average voltage. The third switches are 17 slots for opening the second largest voltage channel 23 with the maximum average voltage. The second keys 16 open up the channel with the maximum average voltage. The first elements And 10 prevent the passage of pulses to the third flip-flops 20 after selecting a channel with extreme average voltage. Second

And 21 elements form a signal to open one of the third keys 17. The first trigger 2 controls the passage of pulses through the third elements 22. The pulse from the second output of the counter 13 through the first element 10 and the third element 11PI 5 sets the fourth triggers 19 to zero

condition after selecting a channel with an extreme average voltage. The impulse of the first output of the counter 13 and 13 opens the second elements AND 21 to open the third keys 7 and sets the second trigger I to zero

condition. The differential amplifier 7 amplifies the voltages applied to its inputs. The closer these voltage levels are, the

less signal will be at the output of the differential amplifier 7.

The first key 12 opens the output of the differential amplifier 7 according to the signal fed to the control

the input of the first key 12, the N-input 8 adder accumulator of this summation | | Nie voltages from the outputs of the third trigger 20. The second comparator 9 generates a zero signal in the case

if the voltage at the output of the N-input adder 8 exceeds the established norm (otherwise, a single signal). The signals from the output of the fourth element And 1I realize the control of opening the first key I2.

When a short pulse arrives at the device launch input, the second

t, the first 2, the fourth 19, and the third 20 triggers and the counter 13 are set to the zero state. The start pulse from the second trigger L starts the generator 3 sawtooth voltage and opens the fourth keys 15. The averaged interference voltages from the outputs of the integrators 14 through the fourth open keys 15 are fed to the inputs of the first comparators 18. The inputs of the reference voltage of the first comparators 18. arrive linearly variable voltage from generator 3. At the moment of equality of the voltages at the inputs of the first comparator 18 into one of the channels 23 of the device, this first comparator 18 triggers and the fourth 19 and the third overturns 20 triggers in this channel are 23, since the second inputs of the third elec

the release of the first triggments And 22 with

Step 2 receives a single signal.

A single signal appears at the output of this channel 23, indicating that this channel 23 has an extreme voltage. . The pulse from the output of the fourth flip-flop 19 through the first element OR 4 is fed to the input of the counter 13 and to the second input of the first element I 10, from the output of which through the third element SH-5 sets the fourth triggers 19 to the zero state. The impulse from the output of the third flip-flop 20 through the second element of RSHI 6 sets the first flip-flop 2 to one state, as a result of which the pulses arriving at their first input through the third elements AND 22 will not pass and the third flip-flops 20 will not overturn.

A single signal from the output of the inverted third trigger 20 opens the fourth key 19 corresponding to this channel, from the output of which the voltage of the channel with extreme average voltage goes to the first input of the differential amplifier 7. The output voltage of the generator. reference voltage level

decreases and at the moment of equal voltage at the inputs of the first comparator 18, the first comparator 18 triggers and the fourth flip-flop 19 of this channel 23 overturns. The impulse from the fourth flip-flop 19 goes through the first element OR 4 to the input of the counter 13, as a result the second output of the counter 13 appears a zero signal, and at the first output a single signal that arrives at the inputs of the second elements I 21 and | At the second input of the second trigger 1. As a result, the second trigger 1 is set to zero zero on the set.

Fourth keys 15, generator 3 is reset. Overturned fourth trigger 19th century the zero state is not established, since the first input of the first element And 10 receives a zero signal. from the second output of the counter 13. Through

open third switch 17 of this canal-average medium voltage, and its voltage 23 is channel 23 with a second control input connected to the output of the maximum voltage of the differential amplifier, the first

arrives at the second input of the differential amplifier 7.

In the event that the resolution of the first comparators 18 was sufficient to select one channel with an extreme average voltage, then a single signal appears at the output of one of the third triggers 20, which is fed to the corresponding input of the N-input adder 8. The voltage level The output of the N-input adder 8 is less than is necessary to operate the second comparator 9. A reference voltage is applied to the input of the reference voltage of the second comparator 9. A single signal from the output of the second comparator 9 is fed to the first input of the fourth element I 1, and the signal from the output of the differential amplifier 7 through the open first key 12 goes to the output device evaluation.

If the number of channels with an extreme average voltage is greater than one (their values differ by the value within the resolution of the first comparators 18), then the voltage level at the output of the N-input adder 8 is 5

0

five

0

and at the output of the second comparator 9 Vits zero signal. According to the signal received at the gate input of the device, the voltage from the output of the differential amplifier 7 through the closed first key 12 does not enter the device's rating, which has a zero voltage level, which characterizes the worst result of an estimate of the accuracy of the correctness of the channel with extreme average voltage.

Claims (1)

Invention Formula An extreme mean voltage channel selector device containing a counter, the setup input of which is the start input of the channel selector device. With extreme average voltage, a differential amplifier, the first key, the output of which is the output of the Channel selection device with an extremator OR, the output of which is connected to the counting input of the counter, the first trigger, the first input of which is connected to the trigger input of the channel selection device with an extreme average value, the second OR element, whose output is connected to the second input of the first trigger, a second trigger connected in series, the first and second inputs of which are connected to the trigger input of the channel selection device with an extreme the average voltage and the first output of the meter, respectively, and the sawmill voltage generator, connected in series the first And element, the first and second inputs of which are connected to the second output of the counter and the input of the start signal selecting device extreme. average voltage, respectively, and the third element OR, the other - INPUT of which is connected to the start input of the device for selecting a signal with extreme average voltage, N processing channels, each of which contains a second key whose output is connected to the first input of the differential amplifier, the third key , the output of which is connected to the second input of the differential amplifier, the second element I, the output of which is connected to the control input of the third key, connected in series the third element I and the third trigger, the other input to the second is connected to the control input of the channel selector with an extreme average voltage, and the output is connected to the control input of the second key and the corresponding input of the second SHS element and is the channel indication output with an extreme average Editor V. Petrash Compiled by N. Melnikov Tehred M. Khodanich Proofreader M, Pojo Order 5299/57 Edition 636 Subscription VNIIPI State Committee, USSR for inventions and discoveries 113035, Moscow, .ZH-35, Raushsk nab. 4/5 Production and printing company, Uzhgorod, st. Project, 4 five 0 five the voltage of the channel selection device with extreme average voltage, connected in series by the integrator, whose input is the corresponding signal input of the channel selection device with extreme average voltage, and the output connected to the signal inputs of the second and third keys, the fourth key, the control input of which is connected with the output of the second trigger, the first comparator, the input of the reference voltage of which is connected to the output of the sawtooth generator, the fourth trigger, the other input of which is connected not with the output of the third element OR, and the output is connected to the first inputs of the second and third elements AND, the second input of the second element AND is connected to the first output of the counter, the second bypass of the third element I is connected to the output of the first trigger, which is , in order to improve the accuracy of estimating the degree of correctness of the choice of a channel with an extreme average voltage, an N-Yield adder connected in series, each input of which is connected to the output of the third trigger of the corresponding processing channel, are entered into it. the second comparator, the input voltage of which is the reference voltage input of the device for selecting a channel with extreme average voltage, and the fourth AND element, the output of which is connected to the control input of the first key, and the other input is the gate input of the selection device Extreme Medium Voltage Channel. 0 0