SU515081A1 - Device for automatic time stamping - Google Patents

Description

(54) DEVICE FOR AUTOMATIC BINDING SCALE OF TIME

one

The invention relates to devices for automatic assignment of hundred standard time scales of points to accurate time signals with a known frequency phase aecymephi, replicated in amplitude manipulation mode (LAM) in a superb wave range according to a predetermined program of time service stations.

Devices are known for automatically assigning time scales of receiving points to time signals transmitted over, by short-wave radios in real time. an amplitude mantle press containing a radio receiver connected to the first signal processing unit for the high-frequency filling phase including the coincidence circuit; block of the secondary signal processing in the phase of the envelope, including a controlled frequency divider, cxewfy switching frequencies of the anchoring, with: a poll quantifier, press commands, multichannel counters, accumulators, a keeper, time connected to the reference generator, to the primary block and to the primary block } .ch1 signaling and

a reference element connected to a controlled frequency divider. .

The disadvantage of such devices is the large volume of drive counters.

The proposed device differs from the known ones in that it is equipped with a block: synchronous selection, consisting of an electronic key and a selection pulse generator connected to its input, with j another input of the electrokey key connected to the output of the coincidence block of the first processing unit. signal, one input of the pulse selection puller is connected to the anchor frequency switching circuit, to the interrogation counter and to the command circuit, and the other to the frequency divider.

This makes it possible to reduce the volume of the equipment by reducing the capacities of the multichannel counting device, such as: 1 shows the functional scheme of the proposed mouth), on .fig. 2 oscillograms of operation of the system (synchronous selection on irraHe with a 1 Hz signal, where the following is received1. Designations: a - pulsed signals Yu Hz and 1 H. parts of the AM program; b - pulses at the output of the coincidence circuit 4; c - pulse signals 10 Hz controlled frequency divider, tied to the signals of the AM program AM; d - pulse signals of 1 Hz controlled frequency divider 6, which are not combined with the program AM signals; d - strobe signals at the output of the driver 2 O synchronic selection pulses; e - / pulses at the output of the electronic key 19. The device contains a primary information processing unit 1, consisting of shapers of signal 2 duration and a reference 3 strobe pulses, a matching circuit 4; a secondary signal processing block 5 containing a controlled frequency divider 6 generating pulse signals with frequencies corresponding manipulation frequencies of the received AM program, the anchor frequency switching circuit, the channel switching circuit 8, the multichannel counters drive 9, the U circuit combining the output signals of the drive counters, the time counter 11 linked and, the definition of the “timeline” of reference to the standard OR multiple of the time scale of the AM program is counted; interrogation 12, controlled by an account-time delay of anchor 11, KOjviaHA schemes 13. determining the sequence of interaction of the elements of block 5; rgadiogfiamk to 14; reading device 15; xpaHKTej-ye time 16; reference gene, torus 17; block 18 synchronous selection, containing elektronshsh. key 19, generator 2 O pulses of synchronous selection. Radiokröyksh; 14 is connected to the shaper 2 of the duration of the signal STRO.5-I LULSOV. From the primary processing unit to the primary processing unit 1, from the output of the receiving device 14, an amplitude-controlled signal w with a filling frequency f (intermediate) mixed with noise is received, and, on the other hand, the reference voltage with the flushing frequency in phase with AM cm-uaiiA, for example, from a phase meter or time-store-16, synchronized with an onopiibiM generator 17. If the gating pulses formed from the reference voltage coincide with the pulses generated from the mixture of signal and noise, at the moment of zero crossing at their voltage, on the coincidence circuit 4 of the first information processing unit 1, the output pulses appear, which, from the point of view of the information contained in them, are broken down as code units. These pulses and carry useful information about the signal. Since from the radio receiver 14, the voltage of the mixer and noise arrives at the input of the unit 1, there is a voltage of the junction in the pauses between the useful information about the signal, the phase of which is random. In this case, on the coincidence 4 block 1, a certain number of code units will be formed representing false information. Code pulses, carrying both useful and false information, arrive at block 5 of secondary signal processing, where through circuit 8 are distributed into multichannel counters-accumulators 9 in accordance with the control signals of circuit 7. Because when searching for a signal with actual phase the number of code units corresponding to the coincidence of the reference voltage with the voltage of the signal mixture with the ground exceeds the number of code units formed when the reference voltage coincides with the voltage of the noise, for a certain interval specified by the counter 11 time of attachment, one of the drive accumulators 9 receives a greater number of code points than any other counter drives that receive code pulses generated when the reference voltage coincides with the noise voltage. At the time interval specified by the counter 11, block 1 is turned off and the polling counter 12 is turned on, by means of which the counter-drive is selected, in which the number of code units exceeded the calculated threshold of the accumulator. At the same time, the number of the accumulator counter in which the threshold is exceeded corresponds to the number of the time interval in which the desired signal of the AM program is located. The output from the output of the dedicated accumulator through the device combining the output signals of the multichannel counters of accumulators is fed to the command circuit 13 by means of which the controllable frequency divider 6 is set in accordance with the detected signals of the standard time or multiple times. The command circuit 13 then turns on the ongnap block 1 and prepares the elements of the secondary signal processing block 5 for the search for signals of the AM program 1 Hz, 1 / 1O Hz, 1 / 6O Hz, respectively.

from the command circuit 13, turns on the shaper of 2 O pulses of electronic selection, to the input of which pulses with a frequency of 1 O Hz from the controlled divider 6 begin to arrive, set in accordance with the leading edge of the 6 U Hz AM program.

From (} to: fm 2 O gating signals corresponding to the duration of the signals of the 1O Hz AM program, the electronic key 19 arrives and is turned off for the duration of the signals of the 1O Hz AM program; at the 1/10 Hz signal search stage, the electronic key 19 starts

it is still additionally turned off for the duration of the 1 Hz signal of the AM program, and at the 1 / 6O Hz search stage the electronic key is turned off for the duration of the signals of i О Hz and 1 Hz and 1/10 Hz of the AM program.

Claims (1)

Invention Formula A device for automatically assigning time scales to receiver points to time signals transmitted by super long-wave radios in amplitude-shift mode, containing 6 diogfiemnik connected to blol. signal processing by the phase of high-precision filling, including a coincidence circuit; a unit for the secondary processing of the envelope phase signal, including an adjustable frequency divider, an anchor frequency switching circuit, an interrogation counter, multichannel counters — accumulators, a command circuit, a time keeper connected to the reference generator, to the primary and secondary signal processing blocks, to a counting element connected to a controlled frequency divider, characterized in that, in order to reduce the volume of the equipment by reducing the capacity of multichannel counters of accumulators, it is equipped with a synchronous selection block, consisting of an electronic key and a selector pulse generator connected to its input, another electronic switch input is connected to the output of the primary signal processing unit coincidence circuit, one input of the selection pulse generator is connected to the lock switching frequency circuit, the interrogation counter and the command circuit, and the other is to a controlled frequency divider.  P P P P G1 P P fig.g rtgi