SU517874A1 - Kvtsevy clock with radio correction - Google Patents

Description

the correction signal, the inputs of the dynamic correction unit are connected to the outputs of the radio receiver and phase meter, and the outputs to the input of the control device and the inputs of the control signal generator, the third input of which is connected to the output of the time correction device, and the output of the control signal generator is connected the second input of the control device; the input of the timeline correction device is connected to the outputs of the radio receiver and the time store.

In addition, the dynamic correction unit may contain a series-connected phase synchronization indicator, a time circuit, a valve, a programming device and a subtractor, and the second input of the subtractor is connected to the inputs of the phase synchronization indicator and the valve.

FIG. 1 shows the functional block diagram of the clock described; in fig. 2 - main time diagrams.

The crystal oscillator 1 is connected via a corrector of the position of the oscillation phase 2 to time keeper 3, one of the outputs of which is connected to the phase meter 4 input, and the other output to the radio receiver 5 and the time reference correction device 6. The output of the radio receiver 5 is connected to another input phase meter 4. The output of the phase maker 4 is connected to the input of the dynamic correction unit 7, which connects the inputs of the phase synchronization indicator and 8, the other input of which is connected to the output of the radio receiver 5, a valve 9 connected to the output dy indicator 8 via a time synchronization circuit 10 and subtracter 11. The output gate 9 is connected to the subtractor II via programming device 12, Ext i.meyuschee additional input UQ kotoro.mu may zanosits information from the outside, e.g., from a computer. The two outputs of the subtractor device AND are connected to two inputs of the control signal generator 13, the third input of which is connected to the output of the time scale correction correction device 6. The outputs of the phase synchronization indicator 8 of the control generator 13 are connected to the control device 4, the two outputs of which are connected respectively, with the inputs of the offset position of the initial phase of oscillations 2 through the frequency equalizer 15 with a crystal oscillator 1. The input of the device determining the correction of the time scale 6 is also connected to the radio receiver m is 5, and the output - to the input of the initial phase corrector position 2 oscillations.

We offer my quartz watches work as follows. Using the radio receiver 5, the sigals of the reference frequency are received, which, entering the phase measuring device 4, are compared in phase with the reference signals of the generator 1, coming through

the offset of the position of the initial phase of oscillations 2 and the time keeper 3. From the output of phase meter 4, the signal corresponding to the phase difference of the received reference and reference signals, for example, in digital form (Fig. 2a) goes to phase synchronization indicator 8. With the help of the latter, the voltage is generated (Fig. 26), when the accuracy of measurement of the phase difference satisfies the set one, ensuring high reliability of the measurement results. In this case, the voltage (Fig. 26) enters the s-control unit 14, allowing adjustment of the quartz watch, and clocks the time circuit 10, which opens the valve 9 for the duration of one signal sample (Fig. 2a) corresponding to the phase difference. This sample is underestimated in its program, its device 12, which stores the sample value for the next measurement session and feeds it to the subtractive device I.

If the frequency of the quartz oscillator is changed according to a linear law with respect to the reference frequency, then the measured phase difference also changes and the subtracter 11 at its outputs generates a signal (Fig. 2c) corresponding to the difference between the initial and current values of the phase difference and its sign indicating that the current phase difference with respect to the initial one, which is underestimated in the programmer 12, is increasing or decreasing. In this case, the subtracter 11 is configured so that on one of the outputs a signal is generated, to When the current phase difference is larger than the original, and on the other, when it is smaller than the original. The timeline correction amendment device 6 assigns the time store 3 to the reference time signals regardless of the reference frequency, which is measured by phase meter 4 and the dynamic correction block 7, determines the time-domain correction, for example, to digital and the result of the correction (Fig. 2g) is fed to the driver of the control signal 13, where it is also recorded and compared with the following, as the initial phase count in the programming device 12. In addition, using the control signal generator 13, a mutual analysis of the results of phase measurements and of changes in the magnitude of the correction of the time scale and the generation of a control action according to the results of analysis are performed.

If the frequency of the helerator 1 is below the reference frequency and increases with time (Fig. 2e), then after the observation interval, from the corresponding output of the subtractor 11, the control signal conditioner 13 receives a signal (Fig. 2-c) of the difference between the initial and the current values of the phase difference generator and radio signal reference, as well as the current time scale correction (Fig. 2d), which decreases with time until the frequency of the quartz oscillator 1

le becomes equal to the frequency of the reference radio signal. Phase measurements and the definition of the timeline correction are carried out discretely, each time a new, measured value of the phase difference, which will be original, is written to the programming device, and a timeline correction corresponding to this value is entered into the comparison unit. However, continuous monitoring of the phase of the reference radio signal and a change in the scale correction is not excluded, but it is necessary to fix the measured values from time to time. While current, and the timeline correction decreases relative to its initial value, the output of the driver is controlled, its signal 13 does not have a signal, and the quartz watch does not adjust. If the correction value has exceeded its original value, which means that the frequency of the local oscillator 1 has reached and exceeded the reference frequency, and the paraool, which characterizes the autonomous storage error, has passed through its peak, a signal is generated using the control signal generator 13 (Fig. 2ej, characterizing oscillator frequency error 1 and time scale, oscillator frequency deviation relative to the reference frequency (based on the change in the time scale correction) and the difference in the generator progress (based on and changes in the phase difference), if there is voltage from the indicator (one-time synchronization 8 using control device 14 based on the signal, Fig. 2e; the frequency of the quartz oscillator 1 and the time scale are adjusted through the corresponding frequency offset 1o and the positioner of the initial phase of rutting 2 laK, which is to compensate the signal (Fig.). At the same time, the frequency of the generator i approaches the reference and reduces the error of the autonomous storage of the scale to a value of about V o, where 6 o is the initial error of the time scale and has ivopolozhny sign singing chasgota same quartz oscillator higher than the reference frequency, but is unchanged in the interval of observation (Fig. 2e), which corresponds to the absence of a systematic generator 1, then the phase difference between the signals of the reference frequency and the generator 1 is constant over this interval. There are no signals at the outputs of the dynamic correction unit 7 connected to the driver of the control signal 13. However, the magnitude of the timeline amendment varies linearly (incremental). In the absence of a signal from the output of the dynamic correction unit, the driver of the control signal 13 generates a signal (Fig. 2e) determined by the difference of the correction in the current and initial moments of time according to the measurement results of the timeline correction. This signal, through control device 14 and frequency equalizer 2, in the presence of a phase matching signal (FIG. 26) reduces the frequency

of the crystal oscillator 1, by bringing it closer to the reference one, and through the corrector of the position of the initial phase of oscillations 2 compensates for the dynamic error (the departure of the time scale during the observation time) of the time scale of the clock. The magnitude of the correction of the time scale, determined after adjustment, is entered into the time keeper 3 through the offset of the position of the initial phase of oscillations 2, and the temporal

the clock scale is combined with the reference one. If the frequency of the quartz oscillator is lower than the reference one and unchanged, the clock is adjusted in the same way as with a constant oscillator frequency exceeding

the reference, but only the driver of the control signal 13, generates a signal when the correction of the time scale is reduced relative to the initial value, and this signal has the opposite sign.

Thus, due to the analysis of sequential measurements on the reference radio signals with high accuracy, and adjustment of the quartz watch to compensate for all the components of the error autonomous

storing the time and frequency of the proposed quartz watch can significantly increase the interval of the autonomous storage of time and frequency.

Claims (3)

1. Quartz watch with radio correction, containing radio reception, control device, frequency equalizer and series-connected crystal oscillator, equalizer the position of the initial phase of the oscillations, the time keeper and the phase meter, the time keeper is connected to the radio receiver, the output of which is connected to the phase meter and the control device is connected to the positioner of the initial phase of the oscillations and through the frequency corrector to the crystal oscillator, characterized in that, in order to increase the autonomous storage interval of time and frequency without decreasing precision, they have a dynamic correction block, a timeline correction correction device, a correction control driver, the inputs of the dynamic correction block are connected to the radio receiver and a phase meter, and the outputs to the control device input and control signal generator inputs, the third input of which connected to the output of the timeline correction device, and the output of the control signal generator is connected to the second input of the control device, the input of the device laziness correction timeline outputs connected to the radio and time keeper. 2. The clock according to claim 1, characterized in that the dynamic correction unit comprises a phase synchronous indicator connected in series, a time circuit, a gate, a programming device and a subtractive the device, and the second input of the subtracting device is connected to the inputs of the phase synchronization indicator and the valve. Sources of information taken into account during the examination: 1. US patent N ° 3756014, cl. 58-28 R, 2. The patent of France No. 2188 R 11, cl. GO4 C 3/00, 1974. 3.A. Gabri, “Automatic adjustment of quartz watches to standard frequency signals,” Jourual and Annales Fraucaises de chrononetrie, Vol. 16, sep. 2, 1962, pp. 37-48.