SU809389A1 - Analogue storage - Google Patents

Description

(54) ANALOG STORAGE DEVICE

I

The invention relates to radio engineering, in particular, to storage devices, and can be used to memorize and reproduce the frequency of signals in radio engineering devices with information frequency output for subsequent analog processing and control of actuators.

Known storage devices, information about the frequency of which is represented as a binary number l.

The closest to the present invention is a frequency-pulse memory device, in which, during the period of the input pulses, the reversible counter is recorded with .onopH (generator Mro number, which is a measure of the input frequency. This number is also recorded and stored in the memory register. playback of the stored frequency reversible counter sets to subtraction mode and the recorded number of signals is read

reference frequency. When the state of the counter at its output reaches zero, a signal is generated that is outputted by the device’s output signal, and the recorded number is written to the reversible counter from the memory register, resulting in the output of the reversing counter of which the output frequency is stored. frequency 121.

However, the known device has a low accuracy of memorizing the frequency of radio signals with a high level of noise. Pulses formed from radio signals are unstable in phase, and with a large level of noise, the periods of the individual pulses are different. This leads to incorrect recording of the number of pulses into the reversible counter, and therefore to an error when playing the memorized frequency, since the measurement takes place in one pulse period. In addition, the device contains a large number of 3S switching elements, functional devices and connections, which complicates the device and its technical implementation. The purpose of the invention is to improve the accuracy of memorizing and resetting radio signals with a high noise level and to simplify the device. This goal is achieved by the fact that in an analog storage device containing a drive, for example, a binary counter, the inputs of which are connected to the outputs of the first and second elements And, respectively; a control unit whose outputs are connected to the first inputs of the first, second and third elements AND; to the trigger the first output is connected to the second, inputs of the first and second elements I, and the input - to the output of the third element I; a pa- dnosignal shaper whose output is connected to the third input of the first element I, and the input to the input of the device; reference signal generator, sequentially connected transducer Code frequency, frequency divider and filter whose output is connected to the device output, first frequency converter input connected to the output of the reference signal generator, second input to the second trigger output, and third inputs to binary codes counter. . The radio signal is converted into a sequence of pulses, which over time are recorded in a counter. The latter controls the operation of the Code-frequency converter, which, using a frequency divider and a filter, converts the signals of the reference generator into a radio signal with a frequency equal to the input frequency. The drawing shows a block diagram of the proposed device. The device contains a shaper of radio signals 1, a binary counter 2, a control unit 3, elements 4, 5, 6 trigger 7, a reference signal generator converter Code - frequency 9, frequency divider U and filter 11, The device works as follows. Before starting, the trigger 7 is set to its original position, the resolving potential is applied to elements 4 and 5, which open the counting and reset circuits of counter 2, and a signal is issued that prohibits the operation of the code-frequency converter 9, the input signal is fed to the driver 1 where a sequence of pulses reduced to logic levels is formed. Radio signals with a high level of noise are formed into pulses that are unstable in phase, and have unstable periods between individual pulses. However, for a certain counting time, the number of pulses for each frequency is constant with an accuracy of one pulse. The pulses during the counting period, to the control unit 3 opens element 4, periodically fill counter 2 and are reset by control unit 3 through element 5. To memorize and play the stored radio signal, control potential is applied to the input of element 6. Since the AND element 6 is connected with its second input to the control circuit of the counting time of the control unit 3, it triggers trigger 7 when the counting of the input pulses ends. In this case, the permitting potential for the operation of the code-frequency converter 9 is applied, elements 4 and 5 are closed, which break the reset and counting circuits of counter 2. Counter 2 records in binary form a number proportional to the input frequency of the radio signal:,. - number of pulses; - frequency of the memorized radio signal; -time bills. Snap 2 with its outputs is connected to the bit inputs of the Codefrequency converter 9 and thereby controls the operation of the latter. The frequency of the pulses in the code of the code-frequency converter 9 is determined by the control code and is equal to f. + 2 ° A b A Output 1 g and n where A is the number in the counter 2; f is the frequency of the reference generator 8; And - the number of bits of the code-frequency converter 9, When the code-frequency converter 9 operates, there is a characteristic uneven distribution of pulses over the period, however, the sequence of pulses with any control code of the converter of the code frequency 9 repeats after 2 pulses. The most convenient form of the decoded pulse signal to convert it to harmonic is the square wave, so the frequency of the oscillator 8 is increased

in comparison with the maximum value of the memorized frequency. To obtain the output of the meander with a frequency corresponding to the input memorized frequency, the code frequency converter 9 is connected to the frequency divider 1O with a division factor of 2.

The meander at the output of the 1U divider is converted by a filter 11 into a harmonic signal with a frequency equal to the memorized frequency.

The proposed device, with its simplicity, allows to increase the accuracy of storing and reproducing radio signals with a high level of noise.

Claims (2)

1. USSR author's certificate No. 417902, cl. H 03 K 13 / 2O, 1972. 2.Avtorsk certificate of the USSR № 503298, cl. Q 11 C 27 / OO, 1974 (prototype).