SU1056471A1 - Device for monitoring frequency and output signal level of generator - Google Patents

Abstract

DEVICE FOR CONTROL OF FREQUENCIES AND LEVELS OF OUTPUT SIGNALS OF GENERATORS according to the author. St. No., characterized in that, in order to expand its functionality, a series-connected radio receiver, a second amplitude comparator, a second shaper pulse generator, and an indicator, are connected in series to the first frequency discriminator and a third shaper pulse generator, are connected in series to the second frequency discriminator and the fourth shaper pulse generator, as well as additional trigger and second reference voltage driver, output, which connected to the second input of the second amplitude comparator, the outputs of the third and fourth formers of the pointed pulses are connected respectively to the first and second inputs of the auxiliary trigger, the output of the latter is connected to the to control input of the radio receiver, the signal input of which is connected to (L generator output and the inputs of the first and second frequency discriminators.

Description

I The invention relates to a radio metering technique and can be used to control the frequencies and levels of the output signals of generators and to control the levels of side oscillations of generators. According to the main author. St. No. a device for controlling frequencies and output levels of generators is known, comprising a voltage driver, an amplitude comparator, a frequency meter and a generator, the output of which is connected to the frequency meter and the first input of the amplitude comparator, the second input of which is connected to the reference voltage generator, voltage source, key, trigger, differentiation unit, multivibrator waiting and spike pulse former, the input of which is connected to the output of the amplitude comparator, and the output - with the input of the waiting multivibrator, the output of which is connected to the input of the differentiation unit, the output of which is connected to the C-input of the trigger, the S input of which is connected to the output of the key, the R input of the Trigger is connected to the auxiliary output of the generator, and the output of the trigger is connected to the control inputs generator and frequency meter; the key input is connected to the output of the voltage source. A disadvantage of this device is the inability to assess the quality of the output signals of the generators, which reduces the functionality of the device. The purpose of the invention is to expand the functional capabilities of the device by simultaneously monitoring the frequencies and levels of the output signals of the generators and controlling the standards for the levels of side oscillations of the generators. The goal is achieved by having a device for controlling frequencies and output levels of generators containing a reference voltage driver, a first amplitude comparator, a frequency meter and a generator, the output of which is connected to the frequency counter input and the first input of the first amplitude comparator, the second input connected to the output the first driver of the reference voltage, voltage source, key, trigger, differentiation unit, waiting for the multivibrator, the first driver of 712 pointed pulses, whose input connected to the output of the first amplitude comparator, and the output from the inlet, the home of the waiting multivibrator, the output of which is connected to the input of the differentiation unit, the output is connected to the C input of the main trigger, the S input of which is connected to the output of the key, the R input of the main trigger connected to an additional output of the generator, and the output of the main trigger is connected to the control inputs of the generator and frequency meter, the key input is connected to the output of the voltage source, a series-connected radio receiver is inserted, the second amplitude comparator, the second minutes shaper needle pulses and indicator serially connected first frequency discriminator, and the third needle pulse shaper, serially connected second and fourth frequency discriminator generator needle pulses, as well as an additional trigger and a second reference voltage generator whose output is connected. the second input of the second amplitude comparator, the outputs of the third and fourth formers of pointed pulses are connected respectively to the first and second inputs of the additional trigger, the output of the latter is connected to the control input of the radio receiver, the signal input of which is connected to the output of the generator and the inputs of the first and second frequency discriminators .. For decision various problems of electromagnetic compatibility of radio electronic means it is necessary to measure and monitor the side channels of the radio receivers. However, the presence of side oscillations of generators leads to the measurement of false reception channels. Therefore, the levels of side oscillations of the generators are currently being monitored. Such control can be carried out by registering at the output of the radio receiver, the sensitivity of which is equal to the rate established at the second oscillation, of the output signal, and to avoid false control, which may be the case when the main oscillation of the generator hits the photon passive of the radio receiver, by turning off the radio receiver. FIG. 1 shows a block diagram of the device; in fig. 2 - time diagrams of the device operation. The device comprises a signal generator 1, a frequency meter 2, a first amplitude comparator 3, a first driver of a reference voltage, e.g. a power source, a first driver, 5 pointed pulses, for example, a Schmitt trigger, a waiting multivibrator 6, a differentiation unit 7, a main trigger O,, voltage source 9, key 10, second driver of the reference voltage 11, second amplitude comparator 12, radio receiver 13, indicator 14, for example, a light panel Not normal, second pointed pulse shaper 15, additional tons rigger 16, the first 17.1 and the second 17.2 frequency discriminators, the third 18.1 and the fourth 18.2 sharpened pulse drivers. The output of the generator 1 is connected to the input of the frequency meter 2 and the first input of the first comparator 3, the second input of which is connected to the output of the first driver k, the input of the first driver 5 is connected to the output of the first amplitude comparator 3, and the output to the input of the waiting multivibrator 6, the output which is connected to the input of the block 7 whose output is connected to the C-input of the main trigger 8, the S-input of which is connected to the output of the key 10, the R-input of the main trigger 8 is connected to the auxiliary output of the generator 1, and the output of the main trigger 8 is connected To the control inputs of the generator 1 and the frequency meter 2, the input of the key 10 is connected; it is connected to the output of the source 9 connected in series with a radio receiver. J3, the second comparator 12, the second generator 15 and the indicator 14, are connected in series the first discriminator 17.1, the third driver 18.2 and the additional trigger 1b, the second discriminator 17i2 and the fourth driver 18.2 are connected to the second input, and the output of the additional trigger 16 is connected to the control input of the radio receiver 13, wherein the inputs of the first 17-1 and second discriminators 17.2 and the signal input of the radio receiver 13 are connected to the output of the generator 1, the output of the second driver 11 is connected to the second at the input of the second comparator 12. The device operates as follows. The frequency / generator 1 is set to the lower limit f of the tuning range f (FIG. 2a) and is measured using frequency counter 2. At the output of the first shaper 4 set the signal level y corresponding to the maximum allowable minimum level of the input signal generator. The radio receiver 13 is tuned to the upper frequency of the controlled side oscillations of the generator 1 and, using an internal attenuator, the level of its sensitivity is set equal to the normal level of the side oscillations of the generator. In the second voltage driver unit 11, the output voltage level is set to correspond to the maximum permissible level of the oscillator side oscillations. At the initial moment of time, the main trigger 8 is in a logical state. At this, a voltage Uf 0 is generated at its output, which is fed to the control input of generator 1. By closing the key 10, the trigger 8 is switched to the logical position 1 A voltage O is produced which disconnects the frequency meter 2 and tunes the frequency of the oscillator 1 in the controlled range f- f. When the output signal of the generator y y reaches its maximum permissible minimum level, the frequency of the first amplitude comparator 3 at the output of the first amplitude comparator 3 generates a signal y - U - U, which, arriving at the first driver 5, forms an electric pointed pulse U {fig . 2b) -, which starts the waiting multivibrator-6 (Fig. 2 &). The front of the pulse of the waiting multivibrator 6 is differentiated by block 7 (FIG. 2d), the trigger 8 is brought into the initial state of logical O. The frequency tuning of the oscillator 1 is stopped, and the frequency meter 2 is connected by determining the frequency f (where the output level of the generator 1. The received value is less than the allowed one. The duration Lp of the pulse of the waiting multivibrator 6 (Fig. 2c) is selected on the basis of the time required for recording the frequency from the frequency meter 2. At the time of the termination of the pulse of the waiting multivibrator 6, its trailing edge t is differentiated by block 7 (fig. 2d), translation of trigger 9 into co-operation of logic 1. frequency meter 2 is turned off and further frequency tuning of oscillator 1 is performed. When frequency f reaches, at which the output signal of oscillator 1 again corresponds to the maximum permissible minimum level, the output the first amplitude k6mparatora. 3 is generated by the Y V - UO O, which, entering the shaper 5, forms a pulse of a pointed form (Fig. 26), etc.

When the generator frequency is tuned, its harmonic oscillations are also tuned. If the harmonic oscillation level of the radio receiver sensitivity is exceeded, the output of the second amplitude comparator 12 produces a signal dxx - Xd-O, which, arriving at the second driver 15, generates an electric sharp pulse, including the indicator board Not Normal. In order to avoid false triggering of the indicator Not normal. When the fundamental oscillator 1 hits the bandwidth of the radio receiver 13, when the generator frequency reaches the lower limit of the radio receiver band 13 at the output of the first frequency discriminator 17.1 tuned to this frequency, a voltage Ug 0 is generated, which the output of the driver 18.1 generates an electric pointed pulse U. This pulse arrives at the first input of the additional trigger 16 and translates it to the B position of the logical 1. On the out Trigger 16 generates a voltage Ug, 0 and turns off the radio receiver 13. When the generator 1 reaches the upper bandwidth of the radio receiver 13, the output of the second frequency discriminator 17.2, tuned to this frequency, produces a voltage Uj O, which at the output of driver 18.2 produces Ele (Tric Momentum U.

This: pulse arrives at the second input of the additional trigger 16 and transfers it to the initial state of logic O. At the output of the trigger 1b, a voltage Ug O is formed and turns on the radio receiver 13 At the end of the control range at the frequency f (Fig 2a) from the additional output of the generator 1 to The R input of the trigger 8 supplies the voltage U from the contact of the limit switch of the generator 1. The main trigger 8 is transferred to the initial state of logic O, the frequency tuning of the generator 1 is stopped, and the frequency meter 2 is turned on, determining the upper frequency of the generator Ator.

Thus, the additional introduction of the radio receiver 13, the second amplitude comparator 12, the second shaper 11, the reference voltage, the second shaper 15 pointed pulses and the 1 Not norm indicator allow you to control the levels of side oscillations of the generators. The introduction of the first and second frequency discriminators 17. 1, and 17. 2 and the third and fourth shaper 18.1 and 18.2 pointed pulses and an additional trigger 1b prevent the false operation of the indicator C not normal when the main oscillation of the generator 1E) hits radio transmittance 13..

The device simultaneously with the control of frequencies and output levels of the generators allows setting the sensitivity of the radio receiver equal to the norm to the levels of side oscillations of the generators, and recording the signals at the output of the radio receiver when the levels of the side oscillations of the oscillators exceed the established norm, also controlling the levels of the side oscillations of the generators. This makes it possible to increase the efficiency of the decision on their quality. When carrying out preventive and maintenance work, and thereby expanding the functionality of the device.

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Claims (1)

DEVICE FOR CONTROL OF FREQUENCIES AND LEVELS OF OUTPUT SIGNALS OF GENERATORS by ed. St. No. 984059, characterized in that, in order to expand the functionality, a series-connected radio receiver, a second amplitude comparator, a second pointed pulse generator and an indicator, a first frequency discriminator and a third pointed pulse generator, a second frequency discriminator and a fourth connected in series are introduced into it spiky pulse shaper, as well as an additional trigger and a second reference voltage shaper, the output of which connected to the second input of the second amplitude comparator, the outputs of the third and fourth generators of spiky pulses are connected respectively to the first and second inputs of the additional trigger, the output of the latter is connected to the control input of the radio receiver, the signal input of which is connected to the output of the generator and the inputs of the first and second frequency discriminators. SU „.1056471