SU1319250A1 - Device for automatic tuning of selective amplifier - Google Patents

Abstract

The invention relates to radio engineering and provides a reduction in setup time. The device contains a selector-1) system 1 with block 2 settings, b. yuk 3 sampling and storage, and nothing more. Trigger 6, sensor 7 of adjustment commands, block 8 of us, i - p 9 nm. | 1) Sleep. System 1 after the 1st cycle is set to max. transfer. The duration of MMiiy.ibsov at the output of unit 4 of the onre: 1e, is the inertia of block 3. To claim. Soil 1.11; the inertia effect on the accuracy of 1-; asters (. the output signal of the 4th element goes to the l-ii input of the 5th and 5i disconnects H.V. from the control input of unit 2 for the transient time in Y / 3. 1 ni (L with with to 01 about

Description

FIELD: engineering. May be related to the invention. It is used when setting up selective transmission systems of radio transmitters and receivers, as well as when monitoring the parameters of radio engineering devices.

The purpose of the invention is to reduce the setting time.

The drawing shows a structured electrical circuit of the automatic tuning device of the selective amplifier.

The proposed device contains a selective system 1 with a setting block 2, the output of which is connected in series with the sampling and storage unit 3, a threshold element 4, an AND 5 element whose output is connected to the control input of the setting unit 2. The output of the installation trigger 6 is connected to the second input of the element / 7 5 and the input of the setting block 2, the Start input of which is connected to the sensor 7 of the tuning commands and the second input of the setting trigger b, the nerve input of which is connected to the output of the End of the range of the setting block 2. The memory block 8 is turned on between the horizontal inputs of the electoral system 1 and the information inputs of the configuration block 2, and the control inputs of the memory block 8 and the sample and storage block 3 are connected to the threshold element 4. The third input of the element 5 coincides with P1 connected to the output of the generator 9 9 The reset input of unit 3 for sampling and storage is connected to the sensor of non-tuning commands.

The device works as follows.

Select; 1 to system 1 changes the frequency of tuning depending on the code fed to its control inputs by block 2 of the settings. Sampling and storage unit 3 remembers instantaneous values at its input when it is fed to the control input of an impulse and stores this value until the next pulse arrives. The poro | -barrelance element 4 compares the signals at the outputs of the electoral system 1 (U) and the block 3 of sampling and storage (U :) and produces a low signal at the output. In this case, in block 3 of sampling and storage, the signal at the output of electoral system 1 is memorized, and in block 8 of memory, the code at the control inputs of this system. Element And 5 transmits the signals from the output of the pulse generator to the control unit control unit input unit 2 settings when there are negative potentials at its other inputs. Under the influence of these signals, a discrete adjustment of the tuning unit 2 is carried out. The sensor 7 of the spawning commands has wrapped the tuning block 2, the sampling and storage block 3, and countervailing the setting trigger 6. whose output signal gives the ramping up to the tuning.

0

I.png from the output of sensor 7 of the spawning commands embraces block 2 of spawning, block 3 of sampling and storage and switches setting trigger 6, the output signal: which paapenjacT signals from generator 9 of pulses to control input of setting 2, under the influence of which tuning unit 2 re-tunes electoral system 1 in frequency. The threshold element 4 compares the output signal and the electoral system 1 with the output signal bz of the sampling and storage unit 3. When the condition is fulfilled, the threshold element 4 is triggered and its output signal switches the sampling and storage unit 3 into an underreporting mode. In Sample and Store 3, the TCKyniee value IJ is written and the threshold element 4 is returned to its original state. At the same time, this pulse records in block 8 of code memory, corresponding to the niero frequency at which.

Thus, after the adjustment process has been completed, the maximum value of the UnmiL signal at the output of the electoral system 1 is recorded in the sampling and storage unit 3, and the code corresponding to the tuning frequency of the electoral system 1, in which (7 | 6 max.) output "The end of the range of block 2 settings switches the installation trigger 6 to its original state. The signal from the output of this trigger closes the element U 5, thereby 11rekrap1, and rebuilding the block 2 settings. The same signal received at the input of the block 2 settings, carried out Attempt code from memory block 8 to setup block 2. The voter1 and system 1, after the first cycle, is set to the maximum transfer ratio. The pulse duration at the output of the normal element 4 is determined by the inertia of the sampling and storage unit 3. To exclude the effect of the inertia of this block on the tuning accuracy, the output signal noporoBOi Oe; 1mepta 4 also goes to the nerve input of the element Ub and turns off the generator 9 impulses: 1c from the control input of block 2 tuning for the time of the transient processb in the block 3 sampling and storage.

five

0

five

five

50

55

Claims (1)

Invention Formula A device for automatic tuning of a selective amplifier containing a selective system, the inputs of which are connected to the outputs of the tuner, a pulse generator, the series-connected threshold element and the And element, the second input of which is connected via an installation trigger connected by another input to the output command sensor adjustment connected to the input of the Setup Tuner, and the output to the control input of the Setup Tuner, characterized in that, in order to reduce the setup time, between the control inputs of the election system and the information inputs of the Setup unit the memory block is turned on connected to the output of the threshold element, between the output of the electoral system and the first the input of the threshold element, the second input of which is connected to the output of the electoral system, includes a storage unit U, the control input of which is connected to the output of the threshold element, and the reset input is connected to the output of the tuning command sensor, the output of the pulse generator is connected to the third input of element 14, and the output the installation trigger - with the entry of the tuner.