SU771607A2 - Device for automatic referencing of time scales - Google Patents

Description

I

This invention relates to the synchronization of time scales of spaced points by time signals.

A device for automatic anchoring of time scales of 5 aut. Is known. St. No. 443360, containing the reference generator, time keeper, reading device, radio receiving device, shaper of the signal strobe and reference-10 strobe pulse shaper, drive meter switching device, multi-channel drive counters, device for combining output signals of multi-channel counter 2- 5 binders, a command device, an anchor time counter, a polling counter, an anchor frequency switchboard, and a controlled frequency divider. Moreover, the outputs of the radio receiving device 20 and the time keepers are connected via shapers of the duration of the signal strobe pulse and the reference pulse to the input of the coincidence circuit, 25 output connected to the switch input of the drive counters, the counters of which are connected to the multichannel drive counters, the outputs of the latter connected to I / O 30

I will give the device for combining the output signals of drive counters, the output of the device for combining is connected to the input of the command device, the output of which is connected to the output time counter, interrogation counter, frequency commutation device and anchor channel, match circuit and controlled frequency divider, outputs which is connected to the reference device and to the switching device of frequencies and anchor channels 1.

A disadvantage of the known device is the reduced reliability of the attachment of low-frequency (LF) signals, due to the consistent principle of detecting signals from a higher frequency to the lowest and at the boundary, a fixed transmission time of amplitude-manipulated (AM) time signals.

The aim of the invention is to increase the reliability and accuracy of the tie.

The goal is achieved by introducing a second shaper of signal stro-pulco Bj second coincidence circuit into the automatic time tagging device, the first one, setting the capacity of the counter accumulator, the second key, the comparison unit to the control pulse shaper, and the second output of the receiving device is connected via serial connected to the second driver of the duration of the signal strobe pulses and the second coincidence circuit, the other input of which is connected to the driver of the reference strobe pulses, A channel switch, the first input of a controlled drive meter is connected to a capacity installation unit, the inputs of which are connected to the third input of a radio receiver and a command unit / outputs connected to the input of the unit (output and the first inputs of both keys, the output of a controlled counter drive connected to the second input of the second key, the output of the controlled frequency divider is connected via the first key to the second input of the controlled storage counter and the input of the control pulse former, the output of which is of the comparison unit is connected to a controllable divider.

The block diagram of the device is shown in FIG. one; in fig. 2 shows time diagrams.

The first output of the receiving device 1, matched with AM time signals, is connected to the driver 2, the duration of the signal gates of the primary processing device 3 signals, and the second output of the receiving device, matched with the carrier time signals is connected to the driver 4, the duration of the signal gates. The outputs of the strobe pulse width drivers are connected to the inputs of the matching circuits 5 and 6, respectively, the other inputs of which are connected to the output of the gate 7 pulse width reference pulses. The outputs of the circuits are connected to the output terminal of the secondary signal processing device 9, the outputs of the channel switch are connected multichannel counters-drives 10, and to the control inputs - the outputs of the command block 11, the polling counter 12 and the frequency switch 13. The inputs of the controlled drive-accumulator 10 are connected to the output of the block To set 14 the capacity of the storage counter and the key 15. The outputs of the storage counters are connected to the command unit 11 via a combination device of 16 output signals of the storage counter, and the output of the controlled storage counter is also connected to the key 17, the control input of which connected to the command unit 11. The control pulse shaper 18 is connected in /., dami with the keys 15 and 17,

and an output with a comparison unit 19, the output of which is connected to a controlled frequency divider 20. A controlled frequency divider is connected via a frequency switch 13 with an anchor time counter 21 and a key 15, as well as with a reading device 22 and a comparison unit 19. Reference generator 23 connected to the time keeper 24, the outputs of which are connected to the controlled divider 20 and the driver 7 of the duration of the reference strobe pulses. The third output of the receiving device 1 is connected to the installation unit 14. The outputs of the command unit 11 are also connected to time counters 21 and polling 12, to the matching circuit 5, to the frequency switch 13, and to the controlled frequency divider 20 and to the comparison unit 19.

The device for automatic assignment of time scales works as follows.

The time signals received by the radio receiver 1 from the outputs matched respectively to the carrier and the envelope of the signals are received (Fig. 2a) to the formers 2 and 4 of the duration of the signal strobe pulses and then to the matching schemes 5 and 6. The reference pulses of the time keeper 24 combined to phase from the carrier of time signals, are fed to the driver 7 of the duration of the reference strobe pulses, the output of which is connected to the inputs of the coincidence circuits. As a result of the coincidence of the reference and signal strobe pulses, pulses are formed at the outputs of the coincidence circuits — code units carrying useful information about the signal (FIG. 26 and c), and the number of code units when the signal-to-noise mixture gates coincide exceeds the number of code units when the gates of pure noise match , due to the specific nature of the signal phase in a mixture with noise and the random nature of the pure noise phase Upon a command to start using the command unit 11, control pulses are generated to assign an anchor to the Pul signals of a high frequency of the next 10 Hz. In this case, the code units from the coincidence circuit 5 of FIG. 26) 8 channels arrive at the switchboard, where by means of the frequency switch 13, signals from controlled divider 20 are distributed over accumulation channels and fed to counters accumulators 10 (Fig. 2d, e, f and g).

According to the signal from the command block 11, the keys 15 and 17 are opened, prohibiting false recording and reading of pulses E to the driver of the control pulses, and block 14 sets the capacity of the controlled counter of the equalized capacitance of the accumulative counters of the accumulators. After assigning the scale of the control splitter 20 to the AM signals of 1/10 Hz, when the pulses of the controlled frequency splitter of 1/10 Hz are combined with the reference signals of the same frequency, the device transitions to the lock of 1/60 Hz. At this stage of the search, six drive counters (channels) are involved, and four are free, therefore, using the command block 11, in addition to the above switchings and operation of the device with signals of 1/60 Hz, similarly to the work described above, using signals of 10.1 and 1/10 Hz 15 and 17 The control pulse from the command unit 11, entering the installation unit 14 and the 8 channel switch, allows the passage of code units from the coincidence circuit b to the input of the drive counter 10, which was not used to search for the 1/60 Hz signal. The input of the installation unit receives a signal from the third output of the radio receiver, indicating its mode of operation (in this case, it signals the reception of AM time signals). Using the setting unit 14, the capacitance of the counter-accumulator 10 is controlled by signals from the radio receiver 1 and the command unit 11. In the latter, accumulation of code units occurs (Fig. 2c), and the accumulation time is determined by the polling pulse period (Fig. 2h), received from the controlled divider 20 through the closed key 15 to the counter-drive 10 and the driver 18 of control pulses. If there is a carrier frequency at the input of the receiving device, counter accumulator 10 is filled before the accumulation time expires and its output pulse (Fig. 2i) is fed through the switch 17 to the control pulse generator. The polling pulses (Fig. 2h) record the fact of the filling of the counter-accumulator 10 corresponding to the presence of reference signals at the input of the device. At the end of the transmission of the AN signals of time, when the output of the radio receiving device 1, connected to the driver 2 of the duration of the signal strobe pulses, is present, the input of the drive counter 10 receives units of code, the number of which is significantly less than the number of units of code with AM lock signals on the air (at the input of the radio receiver 1), therefore, during the time of accumulation, the counter-drive 10 does not fill up, and the absence of a signal from its output means the end of the transmission of AM signals, the moment of which is known a priori and the min with the standard reference mark, with; :: 1frov.nnoy and within an hour. In this case, using the control pulse generator 18, a pulse is generated from the interrogation signals (Fig. 2h), which is delayed relative to the minute mark for the period of the interrogation pulses (Fig. 2k). This pulse can be used to operate other devices as a minute digitized within an hour. In addition, it enters the comparison unit 19, by which its delay relative to the minute mark is compensated and its temporary position is fixed relative to the reference scale of the controlled divider 20. The temporary position of the command block 11 is also fixed by the comparison unit 19 Hz counters drives 10 signals 1/60 Hz and is designed to install a controlled divider. During reception of the second carrier reference frequency, code units (Fig. 2c) are also generated at the output of the matching circuit 6, which carry information about the presence of a signal at the input of the radio receiver 1. According to the signal from the radio receiver 1, the capacitance counter 10 is set using the setting unit 14 , the accumulation in it of units of stroke (Fig. 2c) and the fixation of the presence of a reference signal in the driver 18 of the control pulse on the output pulses of the drive counter 10 (Fig. 2i) and the polling pulses (Fig. 2h). At the end of the transmission of the second reference frequency, the moment of which is also known a priori within an hour, the number of units of cola becomes insufficient to fill the counter-accumulator 10 during the accumulation (analysis) time, and with the help of the generator 18 g of the control pulse of opg dew pulses (Fig 2h) is formed and; -pulse (Fig. 2k), which is delayed in relation to the minute mark for the period following the polling pulses. The temporal position of this pulse relative to the reference scale of the controlled divider is also fixed with the help of the comparison unit 19, and the pulse, as a digitized hourly mark, can be used by the consumer. In the process of binding on the reference signals of the third, fourth, and fifth carrier reference frequencies, the device operates in a similar way. At the end of the operation of the device using the comparison unit 19, a comparison is made of the fixed time position of the impulses tied to the minute marks in accordance with a certain erythmum, for example, for most of the coincident values of the time position

pulses or by a weighted average, the temporal position of the installation pulse is selected and the controllable divider 20 is installed in the 1/60 Hz part.

Thus, due to the use of information embedded in the schedule of transmissions of time, corresponding to multiple reference to the signal 1 M 1/60 HZ, processing of the results of the safety and accuracy of binding is eliminated and ambiguity is eliminated within an hour. The tie-in time is reduced, since tied-up to 1/60 Hz signals when operating on carrier frequencies makes it possible to exclude 1/60 Hz signals from the low-frequency part of the AM program.

Claims (1)

1. USSR author's certificate 443360, class, 6 04 С 11/02, published. 10/5/73 (prototype) i t 1 I I t I I I II