JP2686854B2 - Clock device with automatic calibration function - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a timepiece device with a calibration function capable of minimizing a time difference between a plurality of timepieces arranged in a distributed manner.

[0002]

2. Description of the Related Art For example, in a power supply network, four to five substations or power plants are integrated into one group, and one control station monitors the operation. Further, each control station is connected to the central monitoring station by a communication line, and exchanges data with the central monitoring station to control power supply and distribution. When an accident such as breaker breakage occurs at a substation or power plant, the occurrence of the accident is transmitted to the control station, the post-accident processing is performed at the control station, and central monitoring is performed as necessary. Be informed.

When trying to analyze the cause of an accident,
It would be convenient if the order of accidents could be clarified. For this reason, in the past, a timepiece device with relatively high accuracy was installed in the control station, and each time the occurrence of an accident was notified to the control station, the time data was taken out from the timepiece device installed in the control station, and this time data was used to detect the accident data. The content of the accident is transmitted to the central monitoring station in addition to the accident data representing the content.

[0004]

Although the clocks installed in each control station have high accuracy, the controlled station and the control station are connected by a communication line, and the communication line is connected to various other types. Since it is also used for data transfer, there is a delay before the accident at the controlled station is transmitted to the control station.

Since this time delay varies depending on the congestion of communication lines, even if the control station reads time data from a highly accurate clock and adds it to the accident data, the time data accurately represents the time when the accident occurred. Will not be. Therefore, even if the accident data to which the time data is added is collected, there is a drawback that the accident occurrence order cannot be specified from the data.

Therefore, if a highly accurate clock is placed at each controlled station such as a substation and the time data is read from this clock and added to the accident data at the same time as the occurrence of an accident, the transmission of the accident data will be delayed for some time. Even if an error occurs, the time when the accident occurred can be accurately recorded. However, since a highly accurate timepiece is expensive, it is economically burdensome to arrange a highly accurate timepiece in each controlled place.

However, even a highly accurate timepiece cannot be completely free of errors over a long period of time, so even if a highly accurate timepiece is arranged at each controlled location, it will continue to exist for a long time. It is difficult to keep the time lag between controlled stations at zero. Here, for example, a time signal transmitted by radio broadcasting is detected by a time signal detecting device disclosed in Japanese Patent Publication No. 63-65913, and the time signals are calibrated by the detected signals to disperse a plurality of time signals. It is possible to match the time of.

However, the conventional time signal detection device is made by the idea of detecting the right time by catching the rising timing of the right time signal for each time. When such a structure that detects only one hour on the hour is adopted, the rising waveform of the normal signal is disturbed due to the propagation condition of the radio wave, or the rising wave of the normal signal is deleted by one or several waves. If so, the missing time of the wave appears as an error.

Incidentally, if the normal signal of 880 Hz is cut off by one wave, a detection error of about 1/880 = 1.136 milliseconds occurs. If this detection error occurs for each timepiece, a time difference will already occur between the timepieces at the time of calibration. If the allowable range of time difference between clocks is specified within ± 3 ms, for example, 1.
If there is a deviation of about 136 milliseconds, the deviation amount is large considering the deviation amount up to the next calibration point.

That is, the time signal of the radio broadcast is generally broadcast only from 6 am to 12 pm, and from 1 am to 5 pm
It will not be broadcast until the time. The detection error of the time signal must be as small as possible in order to make the time shift of the clock converge within the specified error range even in the time zone where the time signal is not broadcast. An object of the present invention is to provide a timepiece device with an automatic calibration function that can maintain a minute time difference between watches using a relatively inexpensive watch (a watch having a relatively large time difference). It is a thing.

[0011]

According to the first invention of the present application, a plurality of forecast signals in which a time signal sent by radio broadcasting is intermittent at one second intervals, and a normal signal which rises one second after the last forecast signal. Paying attention to the point constituted by and, each predetermined timing position of the plurality of forecast signals and one correct report signal is detected by the time signal signal detection device, and the forecast signal and the correct signal detected by this time signal signal detection device are detected. The time difference between the predetermined timing position and the clock timing of the clock to be calibrated is measured by the error detection device, the average value of the plurality of error values measured by this error detection device is calculated by the average error calculation device, and the average error calculation is performed. The clocking operation of the clock to be calibrated is calibrated based on the calculation result of the device, and the time signal of the radio broadcast and the time of the clock to be calibrated are matched.

According to the first aspect of the present invention, the average value of the time lag between the predetermined timing position of the forecast signal and the correct signal and the clock timing of the timepiece to be calibrated corresponding to the predetermined timing position is calculated, and therefore the average value of each signal is calculated. Even if the detection points fluctuate to some extent, the fluctuations are averaged. As a result, there is an advantage that the error amount at the time of calibration can be reduced. In the second invention of this application, in the timepiece device with the automatic calibration function proposed in the first invention, the timeless signal detection device that detects that the time signal is not detected at the scheduled time, and the average error value calculated by the average error calculation device A calibration value storage device that stores the value as a calibration value per unit time, and a pseudo-calibration device that calibrates the time of the clock to be calibrated by the calibration value stored in the calibration value storage device when the timeless signal detection device detects an hourly signal is added. We propose a clock device with automatic calibration function.

According to the timepiece with the automatic calibration function proposed in the second aspect of the invention, even if the time signal is not broadcast or the time signal cannot be received, the pseudo calibration operation can be performed at the scheduled time by the previous calibration value. Done. Therefore, according to the second aspect of the invention, even if the time signal is not broadcast, the pseudo-calibration is performed every hour, for example, to correct the time difference.

In the third invention of this application, the timepiece proposed in the second invention comprises a spare timepiece and a calibration value calculation device for obtaining a calibration value per unit time in the past from a calibration value obtained for calibrating this spare timepiece. Set up. This spare timepiece is calibrated only when the time signal is detected. The calibration value used for this calibration is given by the average value of the time lag between the predetermined timing positions of the plurality of forecast signals and the true signal and the clock timing of the spare clock, as in the timepiece proposed in the first invention.

Along with this, the calibration value calculation device calculates a calibration value per unit time (for example, one hour) from the past elapsed time when the timeless signal detection device detects the timeless signal, and the calibration clock per unit time is used to calculate the regular watch. Calibrate the time of day. According to the third aspect of the invention, when the time signal cannot be received at the scheduled time, the past calibration value per unit time is calculated at that time. Since this calibration value is an average value of past time lags, even if the hourly alarm state continues after that, it is possible to perform highly accurate calibration by calibrating the regular timepiece using this calibration value.

[0016]

FIG. 1 shows an embodiment of the present invention. In the figure, 1 indicates a radio receiver. The radio receiver 1 is assumed to receive, for example, medium-wave NHK first broadcast or second broadcast, or NHK-FM broadcast. A low-frequency detection output signal is output to the output terminal of the radio receiver 1, and the low-frequency output signals P _a1 , P _a2 , P _a3 , P _a4 (see FIG. 2A) are input to the time signal detection device 2.

The time signal detecting device 2 is, for example, "Japanese Patent Publication No. 63-6".
By the circuit configuration as disclosed in Japanese Patent No.
It is determined whether the 0 Hz forecast signal and the 880 Hz correct signal are continuously output for a specified time, and the forecast signals P _a1 and P a
_a2, by detecting the incoming of P _a3 and Seiho signal P _a4 (see FIG. 2A), the pulse P _b1 to P _b3 in synchronism with the forecast signal P _a1, P _a2, P _a3, Seiho signal P It is possible to obtain the pulse P _b4 synchronized with the rising edge of _a4 .

On the other hand, reference numeral 3 denotes an original oscillator composed of, for example, a crystal oscillator. A clock is output from the original oscillator 3, and this clock is supplied to the regular clock 4 to perform the hour, minute and second clocking operation. The common timepiece 4 is composed of a counter, and outputs from the output terminals 4A, 4B, 4C and 4D hourly time data, minute time data, second time data,
Time data of about 1/1000 second is output.

5 is an error detection device and an average error calculation device,
1 shows a microcomputer constituting a calibration device. As is well known, the microcomputer 5 is a central processing unit 5
A, a ROM 5B that stores a program for operating the central processing unit 5A in a predetermined order, a RAM 5C that temporarily stores data and the like, an input port 5D, and an output port 5E.

Each of the time signal detection devices 2 is connected to the input port 5D.
The pulse shown in B of FIG. 2 as the reference time signal for each time signal
P_b1, P_b2, P_b3, P_b4Is entered. Also the regular watch 4
From the second signal P shown in C of FIG. 2 as time data._c1When,
Other hours, minutes, 1/1000 second signal P_c2Enter
You. The microcomputer 5 is just before the hour, in detail
Error detection process from the timing of at least 4 seconds before
Program is activated and pulse P_b1~ P_b4And 1 second signal P _cWhen
Error value T_f1, T_f2, T_f3, T_f4To measure. Error value T
_f1, T_f2, T_f3, T _f4Is measured, the central processing unit
Unit 5A has these error values T_f1~ T_f4Calculate the average value of.
Therefore, the central processing unit 5A has an error detecting device and an average error calculating unit.
Configure the output device.

Positive and negative signs are given to the average error value according to the advance or delay of the second signal P _c . In the example shown in FIG. 2, the second signal P _{c leads} the reference time signals P _b1 , P _b2 , P _b3 , and P _b4 . Thus, the regular watch 4
If is ahead of the reference time, a positive sign is attached to the average error value, for example. When the second signal P _c of the common timepiece 4 is behind the reference time signals P _b1 , P _b2 , P _b3 , P _b4 , a negative sign is added and stored in the RAM 5C as a calibration value. Therefore, the storage area of the RAM 5C storing this calibration value constitutes an average error storage.

The central processing unit 5A stores the average error value in the RAM 5C and, at the same time, gives the average error value to the common timepiece 4 through the output port 5E for calibration. The average error value is calculated within one second from the detection time on the hour, and the calibration operation is executed, for example, at the first second after the hour. This calibration operation is performed as follows, for example. The average error value is given to the common timepiece 4 through the output port 5E, and the average error value is subtracted from the count value of the common timepiece 4. When the average error value is subtracted from the count value of the common timepiece 4, for example, when the clock timing of the common timepiece 4 is ahead of the timing of the time signal as shown in C of FIG. 2, the average error value is calculated from the count value. When subtracted, the counter which constitutes the common timepiece 4 is corrected in such a way that the timing of carrying is delayed, and the clock timing of the common timepiece 4 is calibrated so as to match the timing of the time signal.

On the contrary, when the timekeeping timing of the timepiece 4 is behind the timing of the time signal, a negative sign is added to the average error value and is given to the timepiece 4. Therefore, when the negative average error value is subtracted (substantially added) from the count value of the counter constituting the common timepiece 4, the timing of carrying the counter is advanced, and the delayed clock operation is returned to the timing of the time signal. Be done.

As described above, according to the first aspect of the present invention, a plurality of reference time signals are obtained from the time signal, the reference time signals and the clock timing of the common timepiece are compared to obtain a plurality of errors,
Since the average value of multiple errors is calculated and the time of the common clock is calibrated by this average error, even if the individual detection timing of the reference time signal slightly fluctuates depending on the broadcast radio wave condition, the fluctuations are averaged. .

Therefore, the variation of the averaged average error values is reduced, and the amount of time deviation at the time of calibration can be reduced. In order to further emphasize this effect, the reference time signals P _b1 , P _b2 , P _b3 , P _b4 and the clock timing P of the common clock are used.
_{Among the} errors T _f1 , T _f2 , T _f3 , and T _f4 with respect to _c , errors larger than the specified value are removed in advance, or among the errors T _{f1 to} T _f4 , the difference between the maximum value and the minimum value is If it is larger than the specified value, it may be considered as an abnormality and calibration may not be performed.

Further, as proposed in the fifth invention, when the calibration value for finally calibrating the timekeeping operation of the common timepiece is equal to or more than a predetermined value, the calibration value is not used and a certain upper limit value is set. If the common timepiece is configured to be calibrated in a pseudo manner, the calibration can be performed with higher accuracy. However, when the pseudo calibration is performed using the upper limit value in this way, a phenomenon occurs in which the time of the common clock does not converge to the time of the target error range when the system is started up. Therefore, as proposed in the sixth aspect of the invention, when the system is started up, the above-mentioned upper limit value is used to calibrate the timekeeping operation of the common timepiece so that the time of the common timepiece can be smoothly converged within the proper error range.

As a method of obtaining the reference time signals P _{b1 to} P _b4 from the forecast signal and the correct signal P _{a1 to} P _a4 input from the radio receiver 1 in the time signal detection device 2, the predict signal and the correct signal P are used. _It is preferable that both _{a1 to} P _a4 are rectified, and the rising timing from each zero point of the rectified waveform obtained by both rectification is used as the detection timing of the reference time signals P _{b1 to} P _b4 .

By thus setting the rising edge of the both-wave rectified waveform from the zero point as the detection timing of the reference time signals P _{b1 to} P _b4 , even if the detection cannot be performed at the first detection timing depending on the radio wave condition, The next detection timing is a timing delayed by a half-wave cycle. Thus the delay can increase the half time and becomes the detection accuracy of the reference time signal P _b1 to P _b4 in the case where one wave component is lacking.

FIG. 3 shows an embodiment of the second invention of this application. In the second invention of this application, an hourly signal detection device 6 is provided,
It is detected by the time signal detection device 6 that the reference time signals P _b1 , P _b2 , P _b3 , P _b4 are not output from the time signal detection device 2 at the scheduled time, and the detection output causes the microcomputer 5 to store in the RAM 5C the previous time. The used average error value is read out, and the common timepiece 4 is calibrated by the previously used average error value. Therefore, the storage area of the RAM 5C storing this calibration value calibrates the calibration value storage.

That is, the timeless signal detection device 6 takes in a time signal from the service timepiece 4 and operates the timeless signal detection device 6 when the time of the service timepiece 4 approaches the hour on the hour. The time signal detection device 6 detects that the reference time signals P _b1 , P _b2 , P _b3 , and P _b4 are not output from the time signal detection device 2 at the scheduled time in the clock operation of the common timepiece 4. When the reference time signals P _{b1 to} P _b4 are not output at the scheduled time according to the clocking operation of the common clock, the no-signal detection device 6 outputs, for example, H logic, and the detection signal of this H logic is input port 5D of the microcomputer 5. Input to the specified input terminal of.

The microcomputer 5 has an input port 5D.
When the H logic is input to the predetermined input terminal of, it is read that there is no time signal. When the time signal detection signal is input, the microcomputer 5 reads the previously used average error value from the RAM 5C, and the average error value is read for one second after the clock operation of the common clock 4 clocks the hour. Then, it is given to the regular clock 4 and calibrated.

As described above, the timeless signal detecting device 6 is provided, and every time the timeless signal detecting device 6 detects the timeless signal, calibration is performed by using the previous average error value, and during the time when the broadcast disappears. Also, a pseudo calibration can be performed. Since the average error value used last time is stored as the average error value per unit time of the change over time of the original oscillator 3, if the tendency of the change over time of the original oscillator 3 does not change suddenly,
The time can be correctly calibrated with the average error value used last time. So, for example, from 1 am to 5 am,
Even if the time signal is not broadcast, the calibration is artificially performed, and the time difference of the common timepiece 4 can be maintained at a minute value.

FIG. 4 shows an embodiment of the third invention of this application. In the third invention of this application, a spare timepiece 7 is provided separately from the common timepiece 4, a preliminary average error calculating device for calibrating the spare timepiece 7, and a calibration value per unit time is calculated every time the spare timepiece is calibrated. A pseudo-calibration value calculation device and a pseudo-calibration value storage device that stores the calibration value calculated by this pseudo-calibration value calculation device are provided, and the pseudo-calibration value storage device stores the pseudo-calibration value storage device each time the non-time signal detection device detects a non-time signal. The pseudo time calibration value is used to calibrate the time of the common timepiece 4.

That is, in the third aspect of the invention, the common timepiece 4 is calculated from the error between its own timed timing and the reference time signals P _b1 , P _b2 , P _b3 and P _b4 (see FIG. 2) every time the time signal is broadcast. The average error value is used for calibration, and a pseudo calibration value storage (RA
Pseudo-calibration is performed by using the pseudo-calibration value stored in M5C). Therefore, when the time signal is received, the common timepiece 4 is calibrated preferentially according to the error value from the time signal, and when the time signal cannot be received, the pseudo time calibration is carried out. Is calibrated.

On the other hand, the spare clock 7 is calibrated only when the time signal is broadcast. At the same time, in order to calibrate the spare timepiece 7, the error between the timekeeping operation of the spare timepiece and the time signal is calculated from the three forecast signals P _{a1 to} P _a3 and the one true signal P _a4 as in the first invention. Four error values are measured, an average value of these four error values is calculated, and a calibration value per unit time is calculated by the calibration value calculation device. That is, the calibration value per unit time is obtained by dividing the average error value by the time elapsed from the time when the auxiliary clock 7 was calibrated. Therefore, even if the time signal is not broadcast for several hours after that, the calibration operation of the common timepiece 4 is performed using the calibration value per unit time.

This state will be described with reference to FIG. In the example shown in FIG. 5, at the time point T ₁ , the time signal is received, the spare timepiece 7 is calibrated according to this time signal, and then at the time points T ₂ and T _3.
Then, the state that the time signal is not received continues, and time T after 3 hours
_{At 4} , the time signal is received and the spare clock 7 is calibrated. When preliminary clock 7 when T ₄ is calibrated, the error between the clocked timing and time signal of the spare clock 7 is assumed to be h _1, the calibration value calculation device per unit time calibration value h _1/3 calculates and stores the calibration value h _1/3 to the pseudo calibration value storage.

Time point T_FourAfter that, the time signal will not be received again.
If the state continues, the timing T of each hour _Five, T₆, T₇In
The common clock 4 is the unit time stored in the pseudo calibration value storage.
Calibration value h per hit₁/ 3 is read and the composition per unit time is read.
The time of the common clock 4 is calibrated by the established value. Note that there is no time signal
Then, as mentioned above, the spare clock 5 is not calibrated.
Is time T ₇The time signal was received at and the spare clock 7 was calibrated.
It is shown that. Time point T₇Then the error is h_TwoAnd this
The error per unit time is h_Two/ 3.

When the time signal can be received every 3 hours as in the example shown in FIG. 5, the common timepiece 4 is calibrated by the error per unit time calculated from the error of the spare timepiece 7, The calibration can be performed by the error generated relatively recently. Therefore, even if the time signal cannot be received, the pseudo calibration can be performed with high accuracy. By the way, in reality, the timing at which the time signal is not broadcast is five times on the hour from 1 am to 5 am. According to the timepiece of the present invention, the regular timepiece 4 is pseudo-calibrated five times from midnight to five am by the calibration value obtained by calibrating the spare timepiece 7 at midnight. Therefore, from the actual operation, the effect of providing the spare timepiece 7 is not clear, but in practice, the following time may occur, so the spare timepiece 7 is provided.

For example, there is a possibility that the time signal is not detected for several hours because of the disturbance of the reception state of the radio wave, then the time signal is received once, and the time signal is not received again for several hours. In such a case, in the timeless state after the second time, the pseudo-calibration value calculated from the error of the spare timepiece 7 is used to perform the pseudo-calibration, so that the normal timepiece 4
The error of can be pulled within the allowable range.

[0040]

As described above, according to the first invention of the present application, a plurality of errors are detected by comparing a forecast signal and a true signal broadcast by radio with each clock and its own clock timing. While measuring, calculate the average value of these multiple errors,
Since the calibration time of the common clock 4 by the average error value, when the forecast signal and Seiho signal P _a1 to P _a4 obtain the reference time signal P _b1 to P _b4, some variations occur in the detection timing, common Error value T _{f1 to} T between time of clock 4
_{Even if f4} varies, the variation is averaged and the error value can be reduced.

Further, in this case, since the error value exceeding the predetermined value among the error values T _{f1 to} T _f4 is not adopted in the calculation for calculating the average value, the accuracy of the calculated average error value can be further improved. it can. According to the second invention of this application, the no-time signal detection device 6 for detecting that the time signal cannot be received is provided.
At the scheduled time, the timeless signal detection device 6 causes the reference time signal P
When not detecting _b1 to P _b4, since artificially calibrate the common clock 4 with a calibration value using the last, it is possible time signal to maintain the even time deviation conventional clock 4 hours not broadcast on small value .

Further, according to the third invention of this application, the timeless signal detecting device 6 and the spare timepiece 7 are provided, and the spare timepiece 7 and the common timepiece 4 are calibrated only when the time signal is received. Since the time shift amount (error value) per unit time was calculated from the elapsed time from the previous calibration time and the time shift amount of the spare clock 7, this time shift amount was averaged over several hours. It becomes a value and can be a highly accurate calibration value. Therefore, by storing the amount of time shift per unit time as the calibration value, even if the time signal cannot be received again for several hours after that, if the regular watch is calibrated using this calibration value, The time lag can be maintained at a minute value.

As described above, according to the timepieces with the automatic calibration function proposed in the first invention, the second invention and the third invention of this application, each timepiece is equipped with the radio receiver, and each timepiece is automatically calibrated. It can have a function. Therefore, the amount of time difference between the watches can be maintained at a minute value (about ± 3 milliseconds). Therefore, for example, in a power supply network or the like, by arranging a clock according to the present invention in each terminal and extracting a time signal from this clock to use as accident occurrence time data, for example, the order of occurrence times of accidents occurring at each substation It is possible to specify the effect.

Further, since the calibration is performed for each unit time, even if a timepiece having a relatively large time difference amount (a relatively inexpensive timepiece) is used, the time difference between the respective timepieces can be kept at a small value.

[Brief description of the drawings]

FIG. 1 is a block diagram showing an embodiment of the first invention of this application.

FIG. 2 is a waveform diagram for explaining the operation of the first invention of this application.

FIG. 3 is a block diagram showing an embodiment of the second invention of this application.

FIG. 4 is a block diagram showing an embodiment of the third invention of this application.

FIG. 5 is a waveform diagram for explaining the operation of the third invention of this application.

[Explanation of symbols]

 1 Radio receiver 2 Time signal detection device 3 Original oscillator 4 Regular clock 5 Microcomputer 6 Non-time signal detection device 7 Spare clock

 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-63-153490 (JP, A) Actually open flat 2-63493 (JP, U) Actually open 61-70795 (JP, U)

Claims (7)

(57) [Claims] 1. A. First Embodiment A common clock that counts clocks output from the original oscillator and always outputs time data; A time signal detecting device for detecting predetermined timing positions of a forecast signal and a true signal from low frequency signals output from a radio receiver; An error detection device for measuring a time difference between each predetermined timing position of the forecast signal and the normal report signal detected by the time signal detection device and the clock timing of the common timepiece; An average error calculating device for obtaining an average value of a plurality of error values measured by the error detecting device; A timepiece device with an automatic calibration function, which is configured by a calibration device that calibrates the timekeeping operation of the common timepiece based on the calculation result of the average error calculation device and matches the time signal of the radio broadcast with the time of the commontimepiece. . 2. A. The timepiece device with a calibration function according to claim 1, wherein the B. A calibration value storage that stores the average error value calculated by the average error calculation device as a calibration value;
A timeless signal detection device for detecting that the time signal detection device does not output a forecast signal and a true signal at a scheduled time; A timepiece device with an automatic calibration function, further comprising: a pseudo-calibration device for calibrating the time of the common timepiece by the calibration value stored in the calibration value storage when the timeless signal detection device detects the timeless signal. 3. A. The timepiece device with a calibration function according to claim 2, wherein the B. A spare clock which counts and clocks the same clock as the clock clocked by the common clock; A preliminary average error calculation device for calibrating this preliminary clock,
D. A calibration value calculation device that calculates a calibration value per unit time each time the above-mentioned spare timepiece is calibrated, and E. The calibration value calculated by this calibration value calculation device is stored in the calibration value storage device, and the F.D.
A timepiece device with an automatic calibration function, characterized in that the pseudo-calibration device is operated every time the timeless signal detection device detects an timeless signal, and the normal timepiece device is pseudo-calibrated. 4. A. In the timepiece device with the automatic calibration function according to claim 1, B. A timepiece device with an automatic calibration function configured to remove an error value equal to or more than a predetermined value from the plurality of error values detected by the error detection device to obtain the average value. 5. A. In the timepiece device with the automatic calibration function according to claim 1, B. Among the plurality of error values detected by the error detection device, if the difference between the maximum value and the minimum value is a predetermined value or more, it is considered as an abnormality, and the automatic calibration function configured not to perform the average value calculation operation. Clock device. 6. A. In the timepiece device with the automatic calibration function according to claim 1, B. A timepiece device with an automatic calibration function configured to pseudo-calibrate the service timepiece by the upper limit value when a calibration value for calibrating the timekeeping operation of the service timepiece is equal to or higher than a predetermined upper limit value. 7. The timepiece device with an automatic calibration function according to claim 6, wherein the average error value calculated at the time of receiving the time signal is used as a calibration value instead of the upper limit value in a preset start-up period, Clock device with automatic calibration function to calibrate.