JP4014771B2 - Timing device and control method of timing device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a timing device and a control method for the timing device, and more particularly to a radio-controlled timepiece incorporating an electromagnetic power generation device.
[0002]
[Prior art]
As a technique related to a timepiece that receives time data from the outside and corrects the currently displayed time, there is a solar energy drive type radio controlled timepiece described in Japanese Patent Application Laid-Open No. 11-160464. The timepiece described in this publication is a timepiece driven by power generated by a solar cell that converts irradiated light into electrical energy, and receives a standard radio wave containing highly accurate time information and automatically corrects the time. This is a maintenance-free watch that does not require time adjustment, date correction, or battery replacement.
[0003]
[Problems to be solved by the invention]
By the way, the power generation device using solar cells is very good in terms of using light energy around the user by converting it into electrical energy, but the available energy density is low and the energy is constant. There is a problem that cannot be obtained. In addition, when fast charging is performed, strong light energy is required, and when the secondary battery is emptied, it takes a long time to fully charge.
[0004]
In order to solve these problems, power was generated using an electromagnetic power generation device that converts the kinetic energy of the rotary weight into electric energy instead of the solar cell. As a result, it is possible to generate power at any time by shaking the watch, and it is possible to obtain stable energy when the watch is worn on the wrist. Even when quick charging is performed, charging can be performed in a short time by continuously shaking the watch.
[0005]
  However, in a timepiece with a built-in electromagnetic power generator, when power is generated by the electromagnetic power generator while receiving time data from the outside, the time data is accurately received due to the influence of electromagnetic noise generated by the power generation. Without, WrongThere is a problem that the displayed time may be displayed.
  This will be described with reference to FIG. Fig.8 (a) shows the electric power generation waveform by an electromagnetic generator. FIG. 8B shows a voltage induced in the receiving antenna due to electromagnetic noise generated by power generation by the electromagnetic power generator.
  Thus, when power generation is performed by the electromagnetic power generation device, an induced voltage is generated in the receiving antenna due to the influence of electromagnetic noise generated by power generation. Therefore, when time data is received by the receiving antenna while power is being generated by the electromagnetic power generator, noise is added to the received time data due to the influence of the induced voltage generated in the receiving antenna. There is a problem that accurate time data cannot be received.
[0006]
The present invention has been made in view of the above-described circumstances, and provides a timing device capable of receiving time data and the like without being affected by electromagnetic noise generated by power generation by the electromagnetic power generation device and a control method thereof. It is to be.
[0007]
[Means for Solving the Problems]
  In order to solve the above-described problem, the invention described in claim 1In the timing device,Time measuring means for measuring time, power generating means for generating electric power by electromagnetic power generation, power generation state detecting means for detecting the power generation state of the power generating means,A time code including at least time item data indicating “minutes”, time item data indicating “hours”, and time item data indicating “total days” from January 1 of the current yearAnd receiving means for receivingTime codeWhen the power generation state detection means detects the power generation of the power generation means, the reception meansTime codeContinue to receiveWhile,If the power generation is detected while receiving at least the time item data of “minute”, “hour”, and “total date”, each time item received at the time of power generationTreat data as invalidOn the other hand, the time item data received at the time of non-power generation where the power generation is not detected is stored in the storage means as valid data.And a control means.
[0014]
  Claim2The invention described in claim 11In the timekeeping device listed,
  The power generation means has a rotating weight, and generates power by converting the kinetic energy of the rotating weight into electric energy.
[0016]
  Claim3The invention described in claim 11In the described timing device,
  Time code stored in the storage means as valid data by the control meansAnd a time display correcting means for correcting the display of the time measured by the time measuring means.
[0017]
  Claim4In the control method of the time measuring device provided with the time measuring means for measuring time and the power generation device for generating electric power by electromagnetic power generation,
  A power generation state detection step of detecting a power generation state of the power generation device;A time code including at least time item data indicating “minutes”, time item data indicating “hours”, and time item data indicating “total days” from January 1 of the current yearIn the receiving step, and in the receiving stepTime codeIs received, if power generation of the power generation device is detected in the power generation state detection step,Time codeContinue to receiveWhile,If the power generation is detected while receiving at least the time item data of “minute”, “hour”, and “total date”, each time item received at the time of power generationTreat data as invalidOn the other hand, the time item data received during non-power generation when the power generation is not detected is stored as valid data.And a control process.
[0019]
DETAILED DESCRIPTION OF THE INVENTION
[1] First embodiment
[1.1] Schematic configuration of the first embodiment
A first embodiment of the present invention will be described below with reference to the drawings.
FIG. 1 shows a schematic configuration of a timing device in the first embodiment. This time measuring device 1 is a wristwatch, and a user uses a belt connected to the main body of the wristwatch around the wrist.
The timing device 1 of the present example includes a power generation unit 21 that generates AC power, a rectification circuit 19 that rectifies an AC voltage from the power generation unit 21, and a high-capacity secondary power supply 18 that stores the voltage rectified by the rectification circuit 19. A power generation detection circuit 20 that detects a power generation state of the power generation unit 21, a control circuit 14 that controls the entire apparatus based on a detection result of the power generation detection circuit 20, a hand movement unit 16 that drives a pointer by a pointer drive motor, A motor drive circuit 15 that drives the hand movement unit 16 based on a control signal from the control circuit 14 and a hand position detection circuit 17 that detects the hand position for time display correction are configured.
In addition, the timing device 1 includes a ferrite antenna 11 that receives a long wave standard radio wave (JJY; 40 kHz in Japan) on which time data is superimposed, and a reception circuit 12 that outputs the long wave standard radio wave received by the ferrite antenna 11 as time data. And a storage circuit 13 for storing the time data output by the receiving circuit 12.
Hereinafter, each component will be described.
[0020]
[1.1.0] Configuration of receiving circuit 12
First, the detailed configuration of the receiving circuit 12 will be described with reference to FIG.
The receiving circuit includes an amplifying circuit 31 that amplifies the long wave standard radio signal received by the ferrite antenna 11, a bandpass filter 32 that extracts only a desired frequency component from the amplified long wave standard radio signal, and a smooth long wave standard radio signal. A demodulating circuit 33 for controlling and demodulating, an AGC (Automatic Gain Control) circuit 34 for controlling the gain of the amplifying circuit 31 so that the reception level of the long wave standard radio wave signal becomes constant, and decoding the demodulated long wave standard radio wave signal And a decoding circuit 35 for outputting the data.
The power save mode signal is supplied from the control circuit 14 and controls the operation mode of the receiving circuit 12. During normal non-reception, the receiving circuit 12 is in a power saving state, and there is almost no power consumption. On the other hand, at the time of reception, the receiving circuit 12 is released from the power saving state, becomes active, and performs a data receiving operation.
[0021]
Here, with reference to FIG. 9 and FIG. 10, the content of the long wave standard radio wave signal on which the time data is superimposed will be described.
First, the time code format of the long wave standard radio signal shown in FIG. 9 is configured such that one signal is transmitted every second and one record is obtained in 60 seconds.
There are three types of signals transmitted as long wave standard radio signals, and signals representing “1”, “0” or “P” are transmitted.
The types of these signals are determined by the length of the amplitude modulation time of each signal shown in FIG. FIG. 10A shows a signal waveform in which the signal type is “1”, and it is determined that the signal type is “1” when the amplitude continues for 0.5 seconds from the rising edge of the signal. . FIG. 10B shows a signal waveform in which the signal type is “0”, and it is determined that the signal is “0” when the amplitude continues for 0.8 seconds from the rising edge of the signal. FIG. 10C shows a signal waveform in which the signal type is “P”, and is determined to be a “P” signal when the amplitude continues for 0.2 seconds from the rising edge of the signal.
[0022]
Further, as shown in FIG. 9, the time code format of the long wave standard radio wave signal includes the minutes 9a and hours 9b of the current time and the total date 9c from January 1 of the current year as items. .
In addition, an item in which “N” is written on the time code format of the long wave standard radio signal is in an “ON” state when a signal representing “1” is transmitted, and is associated with the item. The numerical value is the target of addition when calculating the hour and minute, etc. On the other hand, when a signal other than “1” is transmitted, it is in the “OFF” state, and the numerical value associated with the item is the hour and minute. It is shown that they are not subject to addition when calculating etc.
More specifically, for example, when a long wave standard radio signal is transmitted as “1, 0, 1, 0, 0, 1, 1, 1” in 8 seconds corresponding to the minute 9a, This indicates that the minute is “40 + 10 + 4 + 2 + 1 = 57” minutes.
In addition, items with “P” and “0” written on the time code format of the long wave standard radio signal are fixed items, and are used to synchronize the long wave standard radio signal with the time code format. . When “P” is transmitted twice in succession, it indicates that the second is “00” seconds, that is, indicates that the minute is switched to the next minute.
The long wave standard radio wave is based on the cesium atomic clock. Therefore, a radio timepiece that receives a long-wave standard radio wave and corrects the time can obtain a very high accuracy of 1 second in 100,000 years.
[0023]
[1.1.1] Configuration of the power generation unit 21
Next, the power generation unit 21 includes a rotary weight 22, a speed increasing wheel train 23, a power generation rotor 24, a power generation stator 25, and a power generation coil 26.
The power generation unit 21 includes an electromagnetic induction type AC power generator that can output the power induced in the power generation coil 26 connected to the power generation stator 25 by rotating the power generation rotor 24 inside the power generation stator 25. It has been.
[0024]
The rotating weight 22 functions as a means for transmitting kinetic energy to the power generation rotor 24. The movement of the rotary weight 22 is transmitted to the power generation rotor 24 via the speed increasing wheel train 23.
In the wristwatch type timing device 1, the rotary weight 22 can be turned in the device by capturing the movement of the user's arm and the like. Therefore, power generation is performed using energy related to the life of the user, and the timing device 1 can be driven using the power.
[0025]
[1.1.2] Configuration of the hand moving section 16
Next, the hand moving section 16 includes a second motor (not shown) for driving the second hand and an hour / minute motor (not shown) for driving the minute hand and hour hand.
The hour / minute motor and the second motor used for the hand moving section 16 are also called pulse motors, stepping motors, stepping motors, digital motors, etc., and are driven by pulse signals that are frequently used as actuators for digital control devices. It is a motor. In recent years, stepping motors that have been reduced in size and weight have been widely used as actuators for small electronic devices or information devices suitable for carrying. Typical examples of such electronic devices are timekeeping devices such as electronic timepieces, time switches, and chronographs.
The needle position detection circuit 17 detects the current needle position by an optical sensor, a magnetic sensor, an electrical contact, or the like provided in the wheel train wheel train mechanism.
[0026]
[1.1.3] Motor drive circuit 15Configuration
  Motor drive circuit 15Includes a time / minute driving circuit (not shown) for supplying a driving pulse to the hour / minute motor and a second driving circuit (not shown) for supplying a driving pulse to the second motor. The hour / minute drive circuit and the second drive circuit supply various drive pulses to the hour / minute motor and the second motor based on the control of the control circuit 14.
[0027]
[1.1.4] Configuration of power generation detection circuit 20
A detailed configuration of the power generation detection circuit 20 will be described with reference to FIG.
The power generation detection circuit 20 shown in FIG. 3 includes two P-channel transistors 43 and 44, a capacitor 45 having drain terminals of the P-channel transistors 43 and 44 connected to a terminal on the current drawing side, and a capacitor 45 in parallel. A resistor 46, which is connected and used to discharge the electric charge of the capacitor 45, an inverter 47 whose drain terminals of the P-channel transistors 43 and 44 are connected to the input, and an inverter 47 connected in series. Inverter 48 and pull-up resistors 41 and 42. 1 is applied to the gate terminals of the P-channel transistors 43 and 44, and the voltage Vdd is applied to each source terminal. The voltage Vss is applied to the other terminal of the capacitor 45 and the resistor 46. The output signal of the inverter 48 is a power generation detection signal.
Here, the voltage Vss is a negative voltage based on the voltage Vdd (= GND), and indicates a potential difference from Vdd.
The resistor 46 is a high resistance of several tens of M to several G ohms.
[0028]
In the above configuration, when an electromotive voltage is generated in the power generation device 21, the P-channel transistors 43 and 44 are turned on alternately, a voltage is generated between the terminals of the capacitor 45, and the input to the inverter 47 is “H”. Therefore, the power generation detection signal output from the inverter 48 becomes “H” level. On the other hand, when no electromotive force is generated in the power generation device 21, the P-channel transistors 43 and 44 remain off, so that the charge of the capacitor 45 is discharged by the resistor 46. Decreases and the input to the inverter 47 becomes “L” level, so that the power generation detection signal output from the inverter 48 becomes “L” level.
Here, since the power generation detection circuit 20 is provided with the pull-up resistors 41 and 42, when no electromotive force is generated in the power generation device 21, the power generation detection circuit 20 is surely P without being affected by the residual magnetic field or the like. The channel transistors 43 and 44 can be turned off.
[0029]
[1.2] Operation of the first embodiment
Next, the operation of the first embodiment will be described with reference to FIGS.
FIG. 4 shows an operation flowchart, and FIG. 5 shows an operation timing chart.
First, when it is time to start receiving the longwave standard radio wave, the power generation detection circuit 20 detects the amount of power generated by the power generation unit 21 and determines whether or not it is in a power generation state (step S1).
If the power generation detection circuit 20 determines that the power generation unit 21 is in the power generation state in step S1 (step S1; Yes), the process proceeds to step S1. Therefore, the power generation detection circuit 20 repeats the process of step S1 until it determines that the power generation unit 21 is in the non-power generation state.
On the other hand, when the power generation detection circuit 20 determines that the power generation unit 21 is in the non-power generation state in the determination in step S1 (step S1; No), the control circuit 14 starts reception of the long wave standard radio wave. The data reception operation signal is output to the reception circuit 12, and the reception circuit 12 that has received the data reception operation signal starts reception of the long wave standard radio wave via the ferrite antenna 11 (step S2).
[0030]
More specifically, when the time reception process is started at time t1 when the power generation detection signal shown in FIG. 5A is “L” (non-power generation state), the power generation detection circuit 20 causes the power generation unit to 21 is determined to be in a non-power generation state, the control circuit 14 switches the data reception operation signal shown in FIG. 5B from “L” (non-reception state) to “H” (reception state), A data receiving operation signal for starting reception of the long wave standard radio wave is output to the receiving circuit 12. The receiving circuit 12 demodulates and decodes the received long wave standard radio wave, and then outputs it to the storage circuit 13 as time data.
[0031]
Next, the power generation detection circuit 20 determines whether or not the power generation unit 21 is in a power generation state (step S3).
When the power generation detection circuit 20 determines that the power generation unit 21 is in a power generation state in the determination in step S3 (step S3; Yes), the control circuit 14 performs a data reception operation for stopping reception of the long wave standard radio wave. The signal is output to the receiving circuit 12, and the receiving circuit 12 stops receiving the long wave standard radio wave (step S6). Then, the memory circuit 13 erases the stored time data (step S7).
[0032]
More specifically, when the power generation detection signal shown in FIG. 5A is switched from “L” (non-power generation state) to “H” (power generation state) at time t2, the power generation detection circuit 20 In order to determine that the power generation unit 21 is in the power generation state, the control circuit 14 switches the data reception operation signal shown in FIG. 5B from “H” (reception state) to “L” (non-reception state), A data reception stop signal for stopping reception of the long wave standard radio wave is output to the receiving circuit 12. Then, the memory circuit 13 erases the stored time data.
[0033]
Next, the power generation detection circuit 20 determines whether or not the power generation unit 21 is in a power generation state (step S8).
If the power generation detection circuit 20 determines in step S8 that the power generation unit 21 is in the power generation state (step S8; Yes), the process proceeds to step S6.
On the other hand, when the power generation detection circuit 20 determines that the power generation unit 21 is in the non-power generation state in the determination in step S8 (step S8; No), the control circuit 14 transmits the long wave standard radio wave from the reception circuit 12. A data reception operation signal for resuming reception is output to the reception circuit 12, and the reception circuit 12 resumes reception of the longwave standard radio wave (step S9). Then, the process proceeds to step S3.
[0034]
More specifically, when the power generation detection signal shown in FIG. 5A is switched from “H” (power generation state) to “L” (non-power generation state) at time t3, the power generation detection circuit 20 In order to determine that the power generation unit 21 is in the non-power generation state, at time t4, the control circuit 14 changes the data reception operation signal shown in FIG. 5B from “L” (non-reception state) to “H” (reception state). ) And a data reception operation signal for resuming reception of the long wave standard radio wave is output to the reception circuit 12.
Here, the predetermined waiting time is provided between the time t3 and the time t4. For example, when power is generated when carrying a time measuring device, the power generation is performed again immediately after that. This is because it is considered that there is a high possibility of being caught. And since the generation | occurrence | production state of electric power generation changes also with the use condition etc. of the time measuring apparatus 1, after considering the use condition etc., the predetermined waiting time is set in the range which can aim at the improvement of processing efficiency.
[0035]
On the other hand, when the power generation detection circuit 20 determines that the power generation unit 21 is in the non-power generation state in the determination in step S3 (step S3; No), the control circuit 14 stores the time stored in the storage circuit 13. Based on the data, it is determined whether or not the reception of the longwave standard radio wave by the receiving circuit 12 has been completed (step S4).
Here, in this embodiment, the longwave standard radio wave is received by three records (one record per minute), and the data items of each record are compared, thereby improving the consistency of the received longwave standard radio wave.
If it is determined by the control circuit 14 that the receiving circuit 12 has not completed the reception of the longwave standard radio wave (step S4; No), the process proceeds to step S2.
On the other hand, if it is determined by the control circuit 14 that the reception circuit 12 has completed the reception of the longwave standard radio wave (step S4; Yes), the control circuit 14 stores the storage circuit 13 in the determination of step S4. The time display is corrected based on the stored time data and the hand position data detected by the hand position detection circuit 17 (step S5).
[0036]
[1.3] Modification of the first embodiment
[1.3.1] First modification
In the first embodiment described above, when the receiving circuit 12 stops receiving the longwave standard radio wave, the storage circuit 13 erases the stored time data, but without erasing the time data. When the receiving circuit 12 resumes receiving the long wave standard radio wave, it may be determined whether or not the stored time data can be used, and the stored time data may be retained as it is.
In short, if the longwave standard radio wave that was transmitted while reception was stopped was other than the hour, minute, and day data, it will be stored in the hour, minute, and day data already stored. Since there is no influence, the data of the minute and the total date can be used as they are when they are already stored.
Also, even if the longwave standard radio wave transmitted while reception is stopped is the hour and day data, the day data is changed every 24 hours and the hour data is changed every 60 minutes. Therefore, as long as the data of the hour and the total date are not changed while the reception of the long wave standard radio wave is stopped, the data of the already stored time and the total date may be used as they are.
As a result, even when power is generated when receiving longwave standard radio waves, the time data received and stored before that can be used effectively, so the reception process is more efficient. Can be performed.
[0037]
[1.3.2] Second modification
In the first embodiment described above, when the receiving circuit 12 resumes receiving the longwave standard radio wave, a predetermined waiting time is provided. However, the reception of the longwave standard radio wave is resumed without providing the predetermined waiting time. May be. In this case, the control circuit 14 switches the data reception operation signal shown in FIG. 5B from “L” (non-reception state) to “H” (reception state) at time t3.
[0038]
[1.4] Effects of the first embodiment
As described above, according to the first embodiment, when power generation is detected by the power generation detection circuit 20 while receiving the long wave standard radio wave, the reception of the long wave standard radio wave is interrupted and the power generation is performed. Since the reception of the long wave standard radio wave is started again after no longer being detected, the long wave standard radio wave can be accurately received without erroneous reception due to the influence of electromagnetic noise due to power generation.
Further, according to the first embodiment, when there is a possibility of erroneous reception at the time of power generation detection, the operation of the receiving circuit 12 is stopped, so that unnecessary power consumption can be suppressed.
[0039]
[2] Second embodiment
[2.1] Configuration of the second embodiment
The configuration of the second embodiment is the same as the configuration of the first embodiment.
The second embodiment is different from the first embodiment in that the first embodiment stops receiving longwave standard radio waves when power generation is detected while receiving longwave standard radio waves. On the other hand, reception of the long wave standard radio wave is continued as it is, and the long wave standard radio wave while power generation is detected is handled as invalid data.
[0040]
[2.2] Operation of the second embodiment
Next, the operation of the second embodiment will be described with reference to FIGS.
FIG. 6 shows an operation flowchart, and FIG. 7 shows an operation timing chart.
First, when it is time to start reception of a long wave standard radio wave, the control circuit 14 outputs a data reception operation signal for starting reception of the long wave standard radio wave to the reception circuit 12. The reception of the long wave standard radio wave is started (step S11).
[0041]
More specifically, the data reception operation signal shown in FIG. 7B is changed from “L” (non-reception state) to “H” by the control circuit 14 at time t11 which is the time to start reception of the long wave standard radio wave. By being switched to “(reception state)”, the reception circuit 12 starts receiving the longwave standard radio wave.
[0042]
The power generation detection circuit 20 determines whether or not the power generation unit 21 is in a power generation state (step S12).
In step S12, when the power generation detection circuit 20 determines that the power generation unit 21 is in a non-power generation state (step S12; No), the control circuit 14 outputs received data that causes the received longwave standard radio wave to be output. A signal is output to the receiving circuit 12, and the receiving circuit 12 outputs the received long wave standard radio wave to the storage circuit 13 as time data. Then, the storage circuit 13 stores the time data received from the receiving circuit 12 (step S13).
[0043]
More specifically, at time t11, which is the time for starting reception of the long wave standard radio wave, the received data output signal shown in FIG. 7C is changed from “L” (non-output state) to “H” by the control circuit 14. By being switched to “(output state)”, the reception circuit 12 outputs the received long wave standard radio wave to the storage circuit 13 as time data. Here, since the power generation detection signal shown in FIG. 7A is “L” (non-power generation state) at time t11, the control circuit 14 uses the longwave standard radio wave currently received by the reception circuit 12 as valid. A valid data signal indicating that the data is correct data is output to the storage circuit 13. The storage circuit 13 stores the long wave standard radio wave received by the receiving circuit 12 as time data while receiving the valid data signal (between time t11 and time t12).
[0044]
Next, the control circuit 14 determines whether or not the reception of the longwave standard radio wave by the reception circuit 12 is completed based on the time data stored in the storage circuit 13 (step S14).
Here, in this embodiment, the longwave standard radio wave is received by three records (one record per minute), and the data items of each record are compared, thereby improving the consistency of the received longwave standard radio wave.
If it is determined by the control circuit 14 that the receiving circuit 12 has not completed the reception of the long standard wave (step S14; No), the process proceeds to step S12.
On the other hand, if it is determined by the control circuit 14 that the receiving circuit 12 has completed the reception of the long wave standard radio wave (step S4; Yes), the control circuit 14 stores the memory circuit 13 in the determination of step S14. The time display is corrected based on the stored time data and the hand position data detected by the hand position detection circuit 17 (step S15).
[0045]
If the power generation detection circuit 20 determines that the power generation unit 21 is in the power generation state in step S12 (step S12; Yes), the control circuit 14 receives the received time data. The output signal is continuously output to the receiving circuit 12, and an invalid data signal indicating that the long wave standard radio wave currently received by the receiving circuit 12 is invalid data is output to the storage circuit 13. Then, the storage circuit 13 stops storing the time data output from the receiving circuit 12, and erases the already stored time data (step S16). Then, the process proceeds to step S12.
[0046]
More specifically, when the power generation detection signal shown in FIG. 7A is switched from “L” (non-power generation state) to “H” (power generation state) at time t12, the power generation detection circuit 20 In order to determine that the power generation unit 21 is in the power generation state, the control circuit 14 sends an invalid data signal indicating that the long wave standard radio wave currently received by the reception circuit 12 is invalid data to the storage circuit 13. Output. The storage circuit 13 does not store the long-wave standard radio wave received by the reception circuit 12 while receiving the invalid data signal (from time t12 to time t13) as time data.
When the power generation detection signal shown in FIG. 7A is switched from “H” (power generation state) to “L” (non-power generation state) at time t13, the power generation detection circuit 20 includes the power generation unit 21. Therefore, the control circuit 14 outputs to the storage circuit 13 an effective data signal indicating that the long wave standard radio wave currently received by the receiving circuit 12 is valid data. Then, the storage circuit 13 stores the time data received by the receiving circuit 12 while receiving a valid data signal (after time t13).
[0047]
[2.3] Modification of Second Embodiment
In the second embodiment described above, when the power generation detection circuit 20 determines that the power generation unit 21 is in the power generation state, the storage circuit 13 erases the stored time data. Without erasing the data, when the power generation detection circuit 20 determines that the power generation unit 21 is in a non-power generation state and the storage circuit 13 resumes storing the time data, the time data already stored can be used. Whether or not the time data that can be used may be stored as it is.
In short, if the longwave standard time signal transmitted while the storage of the time data is stopped is other than the hour, minute, and total date data, the stored hour, minute, and total date are already stored. Since there is no influence on each data, it is sufficient to use each data of the minute and the total date when it is already stored.
In addition, even if the long wave standard radio wave transmitted while the time data storage is stopped is the hour and day data, the day data changes every 24 hours and the hour data changes every 60 minutes. Therefore, as long as the data of the hour and the total date is not changed while the storage of the long wave standard radio wave is stopped, the data of the already stored date and the total date may be used as they are.
As a result, even when power is generated when receiving longwave standard radio waves, the time data received and stored before that can be used effectively, so the reception process is more efficient. Can be performed.
[0048]
[2.4] Effects of the second embodiment
  As described above, according to the second embodiment, when power generation is detected by the power generation detection circuit 20 during reception of a long wave standard radio wave, it is received when power generation is detected. By discarding the long wave standard radio wave as invalid data, time data can be accurately received without erroneous reception due to the influence of electromagnetic noise caused by power generation.
  Further, according to the second embodiment, the receiving circuit 12 is stopped even when power generation is detected.SetTherefore, even when the power generation state is switched to the non-power generation state, effective data can be stored quickly, and the time required for data reception can be shortened.
[0049]
[3] Modification
[3.1] First modification
In each of the above-described embodiments, an electromagnetic induction generator is cited as an example of the power generation device provided in the power generation unit 21, but a power generation device having a piezoelectric element may be used. Moreover, the time measuring device in which two or more types of the power generation devices coexist may be used. Furthermore, the time measuring device which uses together generators, such as an electromagnetic generator and solar cells other than an electromagnetic generator, and thermoelectric power generation, may be sufficient.
[0050]
[3.2] Second modification
In each of the above-described embodiments, the rectifier circuit 19 may be either half-wave rectification or full-wave rectification. In addition, a diode may be used as the rectifier circuit 19, or a plurality of active elements may be used.
[0051]
[3.3] Third Modification
In each of the above-described embodiments, the hour / minute hand and the second motor for driving the hour / minute hand and the second hand, respectively, are used as the pointer drive motor, but one pointer drive motor for driving all of the hour / minute / second hands is used. There may be three pointer driving motors that individually drive the hour hand, the minute hand, and the second hand. Further, the second display may be performed by a liquid crystal display, and only the hour and minute hands may be driven by a motor, or all of the time and date display may be a liquid crystal display.
[0052]
[3.4] Fourth modification
In each of the above-described embodiments, the ferrite antenna 11 is used as an antenna for receiving the long wave standard radio wave on which time information is superimposed. However, FM multiplex broadcasting (76 MHz to 108 MHz) on which time information is superimposed is used. When receiving, a loop antenna or a ferrite antenna may be used, and when receiving a radio wave (1.5 GHz) superimposed with time information from a GPS satellite, a microstrip antenna or a helical antenna is used. May be.
[0053]
[3.5] Fifth modification
Further, in each of the above-described embodiments, the resistor 46 having a high resistance is used to discharge the electric charge of the capacitor 45 provided in the power generation detection circuit 20, but a minute constant current source of about several nA is used. May be.
[0054]
[3.6] Sixth Modification
Moreover, in each embodiment mentioned above, although the time measuring device was illustrated and demonstrated, it may be not only a time measuring device but the portable electronic device etc. which incorporated the generator. According to the present invention, even when a portable electronic device or the like with a built-in generator receives radio waves from the outside, the radio waves and the like are accurately received without being erroneously received due to electromagnetic noise due to power generation by the generator. be able to.
[0055]
[3.7] Seventh Modification
Further, in each of the above-described embodiments, the reception operation is stopped or the reception data is invalidated based on the power generation state of the electromagnetic generator detected by the power generation detection circuit 20, but it is not necessary to limit to this. Alternatively, the reception operation may be stopped or the reception data may be invalidated based on the generated magnetic field (electromagnetic noise) of the electromagnetic generator detected by a magnetic sensor or the like.
[0056]
[4] Other aspects of the invention
A first aspect is a control method of a time measuring device including a power generation device that generates electric power by electromagnetic power generation.
A power generation state detection step of detecting a power generation state of the power generation device;
A receiving step of receiving predetermined information predetermined from outside;
Based on the power generation state detected in the power generation state detection step, a reception prohibition step for prohibiting reception in the reception step;
It is characterized by having.
[0057]
According to a second aspect, in the control method of the timing device according to the first aspect,
The reception prohibiting step is characterized in that reception in the receiving step is prohibited at least during a period in which the power generation apparatus detects that the power generation device is in a power generating state by the power generation state detecting step.
[0058]
According to a third aspect, in the control method of the timing device of the first aspect,
A reception interruption step of interrupting reception in the reception step based on the power generation state detected in the power generation state detection step is provided.
[0059]
According to a fourth aspect, in the control method of the timing device according to the third aspect,
The reception interruption step interrupts reception in the reception step when the power generation state is detected in the power generation state detection step while the reception step is receiving the information. It is characterized by.
[0060]
According to a fifth aspect, in the control method of the timing device according to the third aspect,
When the reception is interrupted by the reception interruption step, a reception restarting step of restarting reception in the reception step based on the power generation state detected in the power generation state detection step is provided.
[0061]
  According to a sixth aspect, in the control method of the timing device of the fifth aspect,
  The reception restarting step is characterized in that the reception in the reception step is restarted after a predetermined time has elapsed since the power generation detection step was detected as being in a non-power generation state.The
[0062]
A seventh aspect is a method of controlling a time measuring device including a power generation device that generates electric power by electromagnetic power generation.
A power generation state detection step of detecting a power generation state of the power generation device;
A receiving step of receiving predetermined information predetermined from outside;
A storage step of storing the information when the power generation device is detected to be in a non-power generation state in the power generation state detection step;
It is characterized by having.
[0063]
According to an eighth aspect, in the control method of the timing device according to the first aspect and the seventh aspect,
The power generation device includes a rotating weight, and generates power by converting kinetic energy of the rotating weight into electric energy.
[0064]
According to a ninth aspect, in the control method of the timing device according to the first aspect and the seventh aspect,
The predetermined information is time data.
[0065]
According to a tenth aspect, in the control method of the timing device according to the ninth aspect,
A time display correcting step of correcting the time display based on the time data is provided.
[0066]
【The invention's effect】
  As described above, according to the present invention, the influence of electromagnetic noise generated by power generation by the power generation device.Time data etc. without receivingCan be received.
[Brief description of the drawings]
FIG. 1 is a diagram showing a schematic configuration of a timing device in each embodiment.
FIG. 2 is a block diagram showing a configuration of a receiving circuit in each embodiment.
FIG. 3 is a block diagram showing a configuration of a power generation detection circuit in each embodiment.
FIG. 4 is an operation flowchart of time display correction processing in the first embodiment.
FIG. 5 is an operation timing chart of time display correction processing in the first embodiment.
FIG. 6 is an operation flowchart of a time display correction process in the second embodiment.
FIG. 7 is an operation timing chart of time display correction processing in the second embodiment.
FIG. 8 is a diagram illustrating an induced voltage of a receiving antenna generated by power generation of a power generation unit.
FIG. 9 is a diagram showing a time code format of a long wave standard radio signal.
FIG. 10 is a diagram for explaining signal types of long wave standard radio signals.
[Explanation of symbols]
  1 …… Timer,
11 …… Antenna,
12 ... Receiving circuit (receiving means),
13 …… Memory timesRoad,
14 …… Control circuit (Control means, Time display correction means),
15 …… Motor drive circuit,
16 …… Hand movement mechanism,
18 …… High capacity secondary power supply,
19 …… Rectifier circuit,
20... Power generation detection circuit (power generation state detection means)
21 …… Power generation part (power generation means)

Claims (4)

A time measuring means for measuring time;
Power generation means for generating electric power by electromagnetic power generation;
Power generation state detection means for detecting the power generation state of the power generation means;
Reception for receiving a time code including at least time item data indicating “minutes”, time item data indicating “hours”, and time item data indicating “total days” from January 1 of the current year Means,
When power generation of the power generation means is detected by the power generation state detection means when the time code is received by the reception means, at least “minute” while continuing the reception operation of the time code by the reception means. When the power generation is detected while receiving the time item data of “hour” and “total date”, the time item data received at the time of power generation is treated as invalid data, while the power generation is Control means for storing each time item data received during non-power generation that has not been detected in a storage means as valid data . The timing device according to claim 1,
The time generator is characterized in that the power generation means has a rotating weight and generates electric power by converting the kinetic energy of the rotating weight into electric energy. The timing device according to claim 1 ,
A time measuring device comprising time display correcting means for correcting the display of the time measured by the time measuring means based on the time code stored in the storage means as valid data by the control means . In a control method of a time measuring device comprising a time measuring means for measuring time and a power generation device for generating electric power by electromagnetic power generation,
A power generation state detection step of detecting a power generation state of the power generation device;
Reception for receiving a time code including at least time item data indicating “minutes”, time item data indicating “hours”, and time item data indicating “total days” from January 1 of the current year Process,
When the time code is received at the reception step, the case where power of the power generator in the power generation state detecting step is detected, while continuing the reception operation of the time code in said receiving step, at least "minute" When the power generation is detected while receiving the time item data of “hour” and “total date”, the time item data received at the time of power generation is treated as invalid data, while the power generation is And a control step of storing each time item data received during non-power generation that is not detected as valid data .

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