SU900446A1 - Device for coding single pulse electric signals of nanosecond range - Google Patents

Description

one

The invention relates to a measuring technique and can be used for processing on a computer information, coming in the form of single elactric signals of nanosecond duration.

Apparatus for encoding single-pulse pulsed electric signals of the nanosecond range are known, containing one of the elements of a high-speed storage cathode ray tube {.

These devices use the principle of time-scale conversion of the input signal, which is fixed on the target by remembering the tube in real time and then reading its ordinate using a line-transverse raster.

The closest technical solution to the invention is a device for encoding single pulsed electrical signals comprising an input unit, states of a series-connected attenuator, a delay line and body forces, a memory tube, a mode switch connected by output i to a tube collector, unit reamers-.

the readings, the outputs of which are connected to the deflection plates of the reading lamp of the tube, the inputs to the first and BTopONiy outputs of the synchronizer, the shifter of coordinate scale codes and the output register connected by the first inputs w. to the outputs of the imager scale codes by coordinates. In this device:

10, the input signal is fixed on the target for mentioning the tube in the form of a potential relief corresponding to the oscillogram of the input signal. The read signal of the recorded signal is a raster with the direction of lines perpendicular to the direction of the time base during recording (line-raster raster). The intersection of the reading beam and the potential relief line causes a current pulse on the signal plate. The coordinates of the intersection points corresponding to the ordinates of the input signal are converted into a digital code {2.

The disadvantage of this device is the low maximum repetition rate of full coding cycles (write-read-prepare)

In known devices, it is 1-2 Hz. This imposes a limitation on the pulse frequency of the input pulses, since one pulse is encoded during a cycle. However, in these experiments, the problem arises of coding single impulse electrical signals that follow at a higher frequency.

The aim of the invention is to improve the speed of the device.

To achieve this goal, a device for encoding single pulse pulsed electrical signals of the nanosecond range, containing an input unit consisting of a series-connected attenuator, a delay line and an amplifier, a memory tube, a mode switch connected to the tube collector, a readout scanner, the outputs of which are connected to the deflecting plates of the tube reading lamp, the inputs to the first and second outputs of the synchronizer, the driver of the scale codes according to the coordinates and the output The first register, connected by the first inputs to the outputs of the scale codes generator by coordinates, introduced an additional scanner unit, a video amplifier and an analog-to-digital converter, connected by information outputs to the second inputs of the output register, a trigger control circuit to the third output of the synchronizer, and the input to the video amplifier output, the input of which is connected to the signal plate of the memory tube, the modulator of the recording illuminator of which is connected to the output of the amplifier of the input unit, and the deflecting plates The recording tube searchlight is connected to the first and second outputs of the additional scanner unit, the outputs of which are connected to the fourth and fifth outputs of the synchronizer and to the first input of the scale codes generator along the coordinates, the second input of which is connected to the output attenuator of the input unit.

FIG. 1 shows the functional scheme of the device; Fig. 2 is a timing diagram explaining its principle of operation.

The proposed device contains an input unit 1, which includes a serially connected attenuator 2, a delay line 3, and an amplifier 4. The amplifier output is connected to a recording headlight modulator of a high-speed dual-beam storage tube 5. The reject plates of the recording headlight of a memory tube 5 are connected to the inputs additional block raziertok

b, which is designed to form a recording television raster on the tube. An additional scan block b consists of a planetary voltage generator 7, a horizontal deflection amplifier 8 and a series-connected row counter 9, a digital-analog converter 10 and a vertical deflection amplifier 11. The outputs of amplifiers 8 and 11 are connected respectively to the horizontal and vertical deflecting plates of the hanging lamp of the tube 5. To form a reading television raster, a device with will contain an identically executed readout scanner 12, including a sawtooth generator 13, a horizontal deflection amplifier 14, a row counter 15, a digital-to-analog converter 16 and a vertical deflection amplifier 17. The outputs of the amplifiers 14 and 17 are connected to the horizontal and vertical deflection, respectively The reading plate of the memory tube 5 is also connected to the device. The device also contains an analog-to-digital converter 18, the input of which through the video amplifier 19 is connected to the signal signal circuit tube 5; tube 5 operation mode controlled by mode switch

20, the output circuit of which is connected to the manifold of the tube 5. The coding device contains a digital block

21, providing the transmission of numeric codes to a communication channel with a digital computer and general synchronization of the device operation. It consists of the output register 22 and the synchronizer 23. The inputs of the register 22 are connected to the information outputs of the analog-digital converter 18 and the generator outputs 24 of the scale codes along the coordinates, the input of which is connected to the circuits of the attenuator 2 and the horizontal deflection amplifier 8. The electrical circuits of the synchronizer 23 are connected to the input circuits of the blocks 6,12,20, as well as to the control circuit for starting the analog-to-digital converter J18.

The device operates cyclically. The cycle consists of writing, reading and preparation. The mode of operation of the device during recording is similar to the formation of a television image on the screen of the receiving television tube. The difference is that the video signals of the lines modulating the recording beam use electrical pulses to be processed. On the screen of the receiving television tube, lines are modulated in luminance in accordance with the video games of the lines, and on the surface of the target of the memory tube

lines are formed, the depth of the charge relief of which varies along the length of the line in accordance with the amplitude of the input signals. The reading of the charge relief from the target of the storage tube is made by a relatively slow television raster, the reading beam passing along the track of the recording beam. The movement of the reading beam along the line causes the formation of a signal in the circuit of the signal plate proportional to the depth of the potential line relief. Thereby, a scaling of the input signal is performed, followed by encoding its ordinates.

The proposed device works as follows. The sequence of single pulse signals U (see Fig. 2, the indices in the voltage symbols are received in accordance with the reference numbers of the device elements) through the attenuator 2, delay line 3 and the amplifier of the input unit 1 is fed to the storage tube modulator 5. When the first pulse of the sequence arrives at the input of the block 1, the synchronizer 23, which converges into the digital block 21, is transmitted to the collector of the tube 5 by means of the mode switch 20 and a high potential Ujo I is supplied corresponding to the Record mode. At the same time, the synchronizer 23 starts the generator of the sawtooth voltage 7, which is part of the additional scanner unit 6. The output signal of the sawtooth voltage generator J goes through the horizontal deflection amplifier 8 to the horizontal deflection plates of the recording spotlight of the tube 5, ensuring the deflection of the recording beam along horizontally. Due to the fact that the current of the recording beam is modulated by the input signal, a target line (line) of the charging relief is formed on the target of the tube 5, the depth of which varies along the length of the line in accordance with the instantaneous values of the input pulse.

When the recording of the first input pulse is completed, the recording beam is shifted vertically by a step-wise voltage. The latter is formed by a synchronizer 23 command using a line counter 9, a digital-to-analog converter 10, a vertical deflection amplifier 11, and is fed to the vertical deflection plates of the recording spotlight of the tube 5. Under the action of the voltage step, the recording beam is shifted vertically by one step, preparing device to record the next pulse. The recording of the second and subsequent signals at the input of block 1 is carried out in a similar way. Thus, synchronously with the input signals by the scanner unit 6 on the memory tube of the memory tube, the lines of the television raster are formed and, at the same time, the recording beam is modulated by input pulses. The maximum number of pulses recorded on the targets of the storage tube 5 in one cycle is determined by the working dimensions of the target of the tube and the diameters of the recording and scoring rays.

After the end of the recording of a specified number of pulses, the synchronizer issues a command to re-switch the tube mode and the mode switch 20 supplies the collector of tube 5 with a low potential Ujij corresponding to the read mode. At the same time, the sawtooth voltage generator 13, which is part of the scanner 12, is started from the synchronizer 23. The output voltage of the generator and, through the horizontal deflection amplifier 14, is fed to the horizontal deflection plates of the reading tube of the memory tube 5. Under the action of this the voltage of the sensing beam is moving along the target of the tube in the horizontal direction. The movement of the reading beam is carried out exactly on the track (line) of the recording beam. In this case, a video signal is formed in the circuit of the signal plate of the pipe, the instantaneous values of which are proportional to the depth of the potential relief of the first line. Therefore, the video signal has the form of a first input pulse, extended in time. Thus, in the proposed device, the time-scale conversion of the input signals is carried out. The signal of the U / y signal plate through the video amplifier 19 is fed to the input of the analog-digital converter 18. The analog-digital converter 18 is triggered by the synchronizer 23 synchronously with the movement of the read beam at a frequency determined by the specified number of encoded signal ordinates. The ordinate codes of the signal from the information output of the analog-digital converter 18 through the output register 22 are sent to the communication channel with the digital computer. The synchronizer 23 sequentially gives permission for the issuance in communication with the DVR of scale codes received from the generator of scale codes along the coordinates 24, the code of the number of ordinates and the ordinate codes of the signal.

Claims (2)

With the end of the coding of the first line (the first input pulse). the synchronizer 23 outputs a pulse to the line counter 15. When the counter is changed, analog-digital converter 16 forms a new sweep voltage step {} „that through the vertical deflection amplifier 17 goes to the vertical deflection plates of the reading light of the memory tube 5 In this case, the readout beam shifts from the vertical one step, after which the scanner unit 12 reads, at the command of the synchronizer, the formation of a sawtooth on the pattern to move 1: the readout beam remembers tube on the trail of the second line on its target. Reading and coding the signals of the second and subsequent lines is similar. After coding the last signal (line) recorded on the target of the tube 5, the synchronizer 2 issues a command to re-switch the tube mode and the mode switch 20 supplies the tube collector with zero potential corresponding to the Erase mode. From the synchronizer to the counter of lines 15, pulses of increased frequency begin to arrive. The reading beam under the action of the signals U) and, 7 is developed by raster on the target of the tube 5 and erases the remnants of the potential relief, preparing the target for a new record. After that, at the synchronizer command, the tube mode is re-switched and the high potential corresponding to the Record mode is established on its collector. The coding device is ready to process the next batch of single signal seals. The possibility of increasing the frequency of the input signals in the described device is ensured by the fact that the signal is recorded on: the target of the tube, not in the form of an oscillogram, but in a line modulated by the depth of the charge relief. This makes it possible to record a stack of single signals on a tube target within a single cycle — the maximum number of recorded signals is determined by the size of the target and the vertical resolution of the memory tube — and since the recording is done in real time, it is obvious that the frequency of the pulses can be set significantly more than 1-2 Hz. The memory tube in the device performs not only the function of a time-scale converter. but also the function of the operative locking device, which saves the computer time of the digital computer used to process information about the parameters of the signals under study. Apparatus of the Invention A device for coding one-fold pulsed electric signals of a nanosecond range, comprising an input unit consisting of a successively connected attenuator, a delay line and an amplifier, a memory tube, a mode switch connected by an output to a tube collector, a reading scanner whose outputs are connected deflection plates of the tube reading lamp, the inputs to the first and second outputs of the synchronizer, the coordinate codes generator and the output register The page connected by the first inputs to the outputs of the scale code generator by coordinates, characterized in that, in order to improve the speed of the device, an additional scanner unit, a video amplifier and an analog-to-digital converter connected to the second inputs of the output register, the control circuit launching - to the third output of the synchronizer, and the input - to the output of the video amplifier, the input of which is connected to the signal plate of the memory tube, the modulator of the recording searchlight cat swarm, connected to the output, input amplifier, second unit; -a deflection plates of the recording illuminator of the storage tube are connected to the first and second outputs of the additional scanner unit: whose inputs are connected to the fourth and fifth outputs of the synchronizer to the first input and the former of the scale codes according to coordinates, the second input of which is connected to the output of the attenuator of the input unit. Sources of information taken into account in the examination of 1.Arhipov V.K. Scale-time conversion of short signals using cathode-ray tubes. 1968. 2. Denbiovetsky S.V. and others. Memorization of cathode ray tubes in information processing devices, Sov.radio, 1973, p. 393-400 f.npototype) .. 21 Ht   " V To whom