SU548833A1 - Device for measuring the offset of the shifted time scales - Google Patents

Description

one

The invention relates to the field of single-time systems, in particular, to anchoring devices of the time scale of working hours located at a large distance, with the help of time-of-time radio signals.

There are known devices in which, for measuring the shift of time scales, the double propagation time of a signal is measured, as well as the delay of local clocks, and the amount of shift of time scales is determined by calculation.

one.

It is also known a device for measuring the shift of a mixed time scale, consisting of a receiver and a transmitter, located at a working hours point of a two-way radio channel with a model hours point, and also containing working hours, a signal splitter, a transmitter start pulse generator time, containing a clock pulse generator and a reversible counter, and a recorder, with the receiver output being connected via a splitter of signals to a reversible time interval meter, on during which the recorder is connected, and to the other two inputs connected working clock and the transmitter trigger pulse generator. The second output is on transmitter 2.

Such a device has a relatively large measurement time.

The aim of the invention is to accelerate the attachment of time scales.

To do this, the proposed device additionally introduces a control frequency divider, one control, whose input is connected to the working hours output, the other to the transmitter start pulse generator, and the irp

In this case, the output of the clock generator is connected to a reversible counter via a series-connected controlled frequency divider. FIG. 1 shows a block diagram of the device;

in fig. 2-time diagrams of his work,

Placement points exemplary and working

hours are connected by a two-way radio channel. The output of working hours 1 is connected to the input

Home Start reversing counter 2 and with the first control input of the divider 3, the input of which is connected to the generator output 4 clock pulses, and the output to the input of the reversing sensor 2. The generator output 3 and the transmitter start pulses connected

the second control input of the frequency divider 3 and with the input of the transmitter 6; The output of the receiver 7 is connected to the input of the splitter 8 signals, one output of which is connected to the input “Reverse of the counter 2, and the second output - with

entrance "Stop. The output of the counter is connected to the input of the recorder 9.

The pulse time signals of clock 1 arrive at the first output of frequency divider 3 and put it into the mode of direct transmission of the frequency of the generator 4 pulses, as well as to the "Start of counter 2" input, which starts the direct pulse counting. After allowing the time signal to be emitted by the generator, a pulse of generator 5 is fed to the input of transmitter 6 and is radiated, as well as to the second control input of divider 3, and puts it into frequency division mode by 2.

The transmitted signal of an exemplary clock from the output of the receiver 7 is fed to the input of the signal splitter 8, from the output of which goes to the input “Reverse of the counter 2 and transfers it to the countdown mode.

The relayed signal of the generator 5 is amplified by the receiver 7 and from the output of the signal splitter 8 is fed to the input of the Stop of the counter 2 and stops the counting down. The result of counter 2 is recorded by the recorder 9, the reading of which is the magnitude of the offset of the shifted time scales of the clock.

Plot 10 shows the starting impulses of the clock 1; in the plot, the II-pulses of the generator 5, which are delayed relative to the pulses shown in Eyur-10 by an amount p and emitted by the transmitter 6; Plot 12 shows the relayed signals from generator 5, which are delayed by the amount of double propagation time of the radio waves in the radio channel; Plot 13 shows pulses of model clocks delayed with respect to pulses 10 by the value of v, plot 14 shows broadcast signals of reference clocks that are delayed by the amount of radio wave propagation time in the radio channel relative to the pulses shown in plot 13.

From the graphs it is clear that

V - p - k

Where

/ i-0

t

and

2e.w-f / g

from where

In :: z:

2

After substitution, you can determine the shift of the time scales

t - n -.

This expression determines the order of operation of the reversible counter for measuring the shift of the displaced time clock, which is implemented by the proposed device.

Formula of invention

Device for measuring the offset of the shifted time scale, consisting of a receiver and a transmitter, located at the working hours point, a two-way radio channel

with a model clock point, as well as containing working hours, a signal splitter, a transmitter trigger pulse generator, a reversible time interval meter, containing a clock pulse generator and

a reversible counter, and a recorder, the receiver output is connected via a signal splitter to a reversible time interval meter, at the output of which the recorder is connected, and the working hours and a generator of the transmitter's start and miulses are connected to the two remaining inputs A transmitter, characterized in that, in order to accelerate the binding of time scales, a controlled frequency divider is additionally introduced in it, one control input of which is connected to the output of working hours, the other to a pulse generator s launch transmitter, wherein the output geperatora clock pulses through successively

The included controlled frequency divider is connected to a reversible counter.

Sources of information taken into account in the examination:

1. Auth. St. L 322758, cl. G 04 C 11/02, 1971.

2. Dudnik B.S. The use of reflected radio waves to calibrate channels of attachment of scales of Burden. Measuring equipment N ° 6, p. 36-34 1973 (prototype).