JP2011149848A - Electronic apparatus with power generating function - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electronic apparatus with power generating function capable of continuing operation instantly for a fixed period, when resuming operation from an operation stop state, and enhancing the convenience. <P>SOLUTION: The electronic apparatus includes a power generation means 4, a secondary battery 7, a device, a power generation detection means for detecting a power generation state, a voltage detection means 71 for detecting a voltage of the secondary battery 7, and an operation control means for controlling the operation state of the device. The operation control means includes an operation stop section 141 for putting the device into an operation stop state, when a battery voltage is lowered below a normal operation stop voltage, and an operation resuming section 142 for resuming operation, when the device is in the operation stop state. The operation-resuming section 142 continues operation of the device, so long as a prescribed time set beforehand, when the power generating state is detected and an initial voltage is higher than an operation resumption voltage. The operation resumption voltage is set at a value which is lower than the normal operation stop voltage, and at which the voltage value of the secondary battery 7 is not lower than the stop voltage, even if the device is operated for a prescribed time by only the secondary voltage 7 in the non-power generating state. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an electronic device with a power generation function.

Watches with a power generation function have come to be widely used because they have the advantage of not requiring battery replacement.
In an electronic timepiece with a power generation function, the electric power generated by the power generation means is used by charging the power storage means. Therefore, when power is not generated, the pointer is moved using the electric power stored in the power storage means.

  In such an electronic timepiece with a power generation function, the presence / absence of power generation is detected, and when power generation is not performed, the state shifts to a power saving state in which time display and the like are stopped, and the voltage of the storage means decreases to a predetermined value V1 or less Then, a warning display is performed, and when the warning display continues for a predetermined period and the voltage of the power storage unit decreases to a predetermined value V2 (V2 <V1) or less, it is known that the time measurement of the internal clock is stopped (Patent Document 1). reference).

  In the timepiece described in Patent Document 1, since timepiece display is stopped in a state where power generation is not being performed, power consumption can be reduced, and voltage drop of the power storage means can be suppressed. Further, when the voltage of the power storage means decreases to the predetermined value V1 or less, a warning is displayed, so that it is possible to suggest recovery of charging or the like to the watch user. For this reason, if the power storage means is charged when a warning is displayed, the time measuring means can be prevented from stopping, and operations such as time adjustment at the time of restart can be made unnecessary.

JP 2009-162486 A

  However, in the timepiece described in the above-mentioned Patent Document 1, by displaying a warning, it is urged to charge the power storage unit before the timing unit stops, but when the user does not notice the warning display, the timing unit Will stop. In this case, in Patent Document 1, when the power storage means is charged by power generation or the like and the voltage value becomes larger than the predetermined value V1, time adjustment is performed by forcibly receiving a standard radio wave, and the normal hand movement state is restored. It was.

For this reason, there is a problem that the timepiece cannot be used until the power storage means returns to the voltage V1, and the usability is not good.
That is, when the watch is removed and left in a state where power generation is not performed such as in a desk for a long time, there is a high possibility that the user will not notice the warning and shift to the stop state of the timing means as it is.
Even if a user tries to use a timepiece in such a stopped state from a desk or the like, in Patent Document 1, as described above, the voltage of the power storage means is higher than the predetermined value V1 due to charging or the like. The stop state is not released until. For this reason, the user cannot use the watch immediately, which is inconvenient, and misunderstood that the watch is out of order, giving the user a sense of anxiety. .

  The present invention solves the above problem, and when the operation is resumed from the state where the operation is stopped due to the power generation stop or the like, the operation can be continued immediately and for a certain period of time, and the convenience is improved. An object is to provide an electronic device with a power generation function.

  The present invention detects a power generation means, a power storage means for storing electrical energy generated by the power generation means, a device operated by the electrical energy stored in the power storage means, and a power generation state of the power generation means A power generation detection means; a voltage detection means for detecting the voltage of the power storage means; and an operation control means for controlling the operation state of the apparatus. The operation control means is configured such that the voltage detected by the voltage detection means is normal. An operation stop unit for controlling the device to be in an operation stop state when the operation voltage drops below an operation stop voltage; and an operation restart unit for restarting the operation of the device when the device is in an operation stop state. The operation restarting unit detects at least the power generation state when the power generation detection unit detects the power generation state and the initial voltage detected by the voltage detection unit is higher than the operation restart voltage at this time. The operation of the apparatus is continued for a predetermined period of time, and the operation resumption voltage is lower than the normal operation stop voltage and is stored in the power storage means when the power generation means is in a non-power generation state. Even if the device is operated only for a predetermined time with only the electric energy, the voltage value of the power storage means is set to a value that does not fall below a stop voltage at which the device cannot be operated. Equipment.

  Here, the device operated by the electric energy stored in the power storage means corresponds to, for example, a time display device that displays the time if the electronic device is a watch. That is, if it is an analog time display device using hands, it is a time display device including a motor, a train wheel driven by this motor, hands, and the like. In addition, a digital time display device using a liquid crystal panel or the like is a time display device including a liquid crystal panel and its driving driver.

According to the present invention, since the operation control means includes an operation stop unit, the operation of the apparatus is performed when the voltage of the power storage means drops below the normal operation stop voltage due to power generation being stopped or the like. Can be stopped. For this reason, when an electronic device such as a watch is left unused and used, the operation of the apparatus can be automatically stopped, and wasteful power consumption can be suppressed.
According to the present invention, since the operation restarting unit is provided, if the power generation state is detected and the voltage of the power storage means becomes larger than the operation restart voltage when the device is in the operation stop state, the device Resume driving. When the operation of this apparatus is resumed, even if the power generation is stopped and the voltage of the power storage means decreases below the operation resumption voltage while the operation is continued, the operation is continued for at least a predetermined time.

For this reason, if the voltage of the power storage means is higher than the operation restart voltage when restarting the operation, the operation can be restarted immediately without waiting for the storage means to be charged, and the operation can be continued for the predetermined time. Therefore, the operation of the apparatus can be resumed without waiting for the voltage of the power storage means to rise above the normal operation stop voltage at which the operation of the apparatus is stopped during normal operation. Therefore, the electronic device can be used immediately when the operation is resumed, and the convenience can be improved.
In addition, at the time of restarting the operation, for example, even if the power generation state does not continue and the voltage of the power storage means drops below the operation restart voltage, the operation can be continued for at least a predetermined time. For this reason, the user does not have anxiety that the operation will be stopped immediately after resuming operation, and in this respect, the convenience of the electronic device can be improved.
In addition, the normal operation stop voltage is set to a value higher than the operation restart voltage. Therefore, when power generation stops when the electronic equipment is left unattended and the voltage of the power storage means decreases, the normal operation stop is first stopped. The operation is stopped due to a drop in voltage level. Since the power consumption during the operation stop can be made much smaller than that during the operation, the battery voltage can be maintained at the operation restart voltage or higher even if the operation is stopped for a long time. Therefore, when power generation is detected and the operation is resumed while the operator is stopped, the voltage of the power storage means is highly likely to be equal to or higher than the operation resumption voltage, and in this case, the operation can be resumed immediately. The convenience of electronic devices can be improved.

  In the electronic device with a power generation function according to the present invention, the operation stopping unit is configured such that when the operation is resumed by the operation resuming unit and the operation for the predetermined time is performed, the voltage of the power storage unit is equal to or lower than the initial voltage. The operation of the device was stopped, the voltage of the power storage means was larger than the initial voltage, and then the voltage of the power storage means became larger than the normal operation stop voltage without dropping below the initial voltage. In this case, the operation is continued until the normal operation mode is entered and the voltage drops again below the normal operation stop voltage, and the voltage of the power storage means is larger than the initial voltage, and then the voltage of the power storage means is changed to the normal operation. When the voltage drops below the initial voltage without becoming higher than the stop voltage, it is preferable to stop the operation at that time.

If the voltage of the power storage means has dropped below the initial voltage at the time when the operation has resumed, the power generation means is in a non-power generation state during the predetermined time of operation, and the electrical energy of the power storage means is consumed. Will be. For this reason, if the operation is continued as it is, the voltage of the power storage means may be lowered below the stop voltage.
On the other hand, in the present invention, if the voltage of the power storage means is equal to or lower than the initial voltage when the predetermined time elapses, the operation of the device is stopped by the operation stop unit. Thereafter, the operation can be stopped to reduce the consumption of electric energy. Therefore, it is possible to prevent the voltage of the power storage unit from decreasing below the stop voltage.

On the other hand, if the voltage of the power storage means becomes larger than the initial voltage when a predetermined time has elapsed since the restart of operation, the power generation means is in a power generation state and power storage is being performed. Therefore, the operation of the apparatus can be continued after a predetermined time has elapsed, and convenience is enhanced.
In addition, when the voltage of the power storage means rises above the normal operation stop voltage, it means that the normal operation has been restored, so that the operation stop unit operates the device until it drops below the normal operation stop voltage. continue. Therefore, the operation of the apparatus can be maintained for a relatively long time, and when the power generation is stopped and the voltage drops below the normal operation stop voltage, the operation of the apparatus is stopped and further voltage reduction can be suppressed. For this reason, when power generation is performed again, the operation can be resumed at a relatively high voltage.
In addition, when the voltage of the power storage means is equal to or lower than the normal operation stop voltage even after the predetermined time has elapsed, the operation stop unit stops the operation when it drops below the initial voltage. For this reason, while continuing the operation of the apparatus as much as possible, when the voltage drops below the initial voltage due to power generation stop or the like, the operation is stopped and a further voltage drop can be suppressed. For this reason, it can prevent that the voltage of an electrical storage means falls below a stop voltage, and when a power generation is performed again, a driving | operation can be restarted rapidly.

In addition, if the operation is stopped when the voltage of the power storage means drops to the initial voltage, the operation can be stopped early even when the power generation is stopped, so the voltage drop of the power storage means can be suppressed and the next operation resumed. It is possible to prevent the voltage of the power storage means from dropping below the stop voltage by the time.
If the electronic device is a clock, when the voltage of the power storage means falls below the stop voltage, the electric circuit such as an IC cannot be operated, the time measuring means for measuring the time is also stopped, and the time when the operation is resumed. Matching work is required. On the other hand, according to the present invention, it is possible to continue timing processing with low current consumption even when the operation of the time display device is stopped, eliminating the need for time adjustment work when restarting operation, and improving convenience in this respect as well. it can.

  Here, the operation stop unit is configured such that the initial voltage is larger than the normal operation stop voltage, and the voltage of the power storage unit at the time when the operation is restarted by the operation restart unit and the operation for the predetermined time is performed. Is larger than the initial voltage, the operation of the apparatus may be stopped when the voltage of the power storage unit drops below the initial voltage.

  When the initial voltage is higher than the normal operation stop voltage and the voltage of the power storage means is higher than the initial voltage when a predetermined time has elapsed after restarting operation, the operation is started when the voltage of the power storage means drops below the initial voltage. If the operation is stopped, the voltage of the power storage means can be maintained at the normal operation stop voltage or higher. Therefore, when power generation is detected, the operation can be resumed immediately.

  In the electronic device with a power generation function according to the present invention, the electronic device includes a timer that measures an elapsed time after the operation of the device is resumed, and a duration display unit that displays a duration of the operation of the device. When the operation is resumed, the duration display means displays the remaining time obtained by subtracting the elapsed time measured by the timer from the predetermined time as the duration, and the operation resumption unit has at least the duration display means It is preferable that the operation of the apparatus is continued until the duration time displayed at is 0 hours.

  When the timer and duration display means are provided, the user can easily grasp the remaining operation continuation time of the apparatus. In the present invention, the operation of the apparatus is continued for at least a predetermined time when the operation is resumed. However, since the duration according to the predetermined time is also displayed on the duration display means, the user can safely use the electronic device. Available.

  In the electronic device with a power generation function according to the present invention, the operation stopping unit is configured such that when the operation is resumed by the operation resuming unit and the operation for the predetermined time is performed, the voltage of the power storage unit is equal to or lower than the initial voltage. The operation of the device was stopped, the voltage of the power storage means was larger than the initial voltage, and then the voltage of the power storage means became larger than the normal operation stop voltage without dropping below the initial voltage. In this case, the normal operation mode is entered, the voltage of the power storage means is greater than the initial voltage, and then the voltage of the power storage means decreases below the initial voltage without becoming greater than the normal operation stop voltage. In this case, the operation is stopped at that time, and in the normal operation mode, the duration display means stores the electric energy stored by the power generation means in the power storage means. The duration is added according to the amount, and when the electrical energy of the power storage means is consumed by the operation of the device, the duration is subtracted according to the amount consumed, and the operation restarting unit displays the duration It is preferable to continue the operation of the device until the duration displayed by the means reaches 0 hour.

The duration display means is preferably set so that the voltage of the power storage means becomes equal to or higher than the normal operation stop voltage when the duration becomes 0 hour.
According to the present invention, the duration display means calculates the duration based on the electrical energy accumulated in the power storage means by power generation and the electrical energy consumed by the operation of the device, so that the operation resuming unit When stopped, the operation of the apparatus can be stopped when the duration becomes zero.
For this reason, for example, if the duration is set to be equal to or higher than the normal operation stop voltage when the duration becomes 0 hour, it is possible to reliably prevent the voltage of the power storage means from dropping below the stop voltage, and immediately after restarting the operation. You can operate the device. In addition, since the operation stop is linked with the duration display, the convenience for the user can be further improved.

  In the electronic device with a power generation function according to the present invention, the normal operation stop voltage is set in advance for the predetermined time operation of the device by the electric energy stored in the power storage unit when the power generation unit is in a non-power generation state. It is preferable that the voltage value of the power storage means is set to a value that does not drop below the operation restart voltage even if the operation is executed a number of times.

According to the present invention, after the voltage of the power storage means drops below the normal operation stop voltage and the operation of the apparatus is stopped, the voltage of the power storage means is maintained until the operation for the predetermined time is performed a predetermined number of times by restarting the operation. It does not drop to the restart voltage.
Therefore, even if the operation is stopped after a predetermined time without sufficient power generation when the operation is resumed, the operation can be continued for a predetermined time when the operation is resumed until the set number of times is repeated, improving convenience. it can.

  In the electronic device with a power generation function according to the aspect of the invention, it is preferable that the operation resuming unit sets the length of the predetermined time according to the value of the initial voltage.

  According to the present invention, for example, when the initial voltage is high, the operation continuation time of the device is lengthened, and when the initial voltage is low, the operation continuation time can be adjusted according to the voltage level of the power storage means. For this reason, when it becomes a non-power generation state after resuming operation, it is possible to ensure a long operation continuation time while preventing the voltage of the power storage means from dropping below the stop voltage.

The block diagram which shows the structure of the electronic timepiece with a power generation function in 1st Embodiment. The circuit block diagram of the electronic timepiece in the embodiment. The figure which shows the dial part of the electronic timepiece in the said embodiment. The figure which shows the structure of the electric power generation means and duration display means in the said embodiment. The flowchart which shows the driving | operation restart process from the driving | operation stop state in the said embodiment. The graph which shows the relationship between the storage battery voltage and movable period in the said embodiment. The flowchart which shows the process of the 1st operation mode in the said embodiment. The flowchart which shows the process of the 2nd operation mode in the said embodiment. The graph which shows the relationship between the storage battery voltage at the time of a 2nd operation mode, and a movable period. The flowchart which shows the process of the 3rd operation mode in the said embodiment. The flowchart which shows the process of the normal operation mode in the said embodiment. The flowchart which shows the driving | operation restart process from the driving | operation stop state in 2nd Embodiment. The flowchart which shows the process of the 4th operation mode in the said embodiment. The graph which shows the relationship between the storage battery voltage at the time of a 4th operation mode, and a movable period. The graph which shows the relationship between the storage battery voltage at the time of a 4th operation mode, and a movable period. The flowchart which shows the process of the 5th operation mode in the said embodiment. The flowchart which shows the process of the 6th operation mode in the said embodiment. The graph which shows the relationship between the storage battery voltage of a secondary battery, and the amount of electrical storage.

[First Embodiment]
DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, a first embodiment of the invention will be described with reference to the drawings.
[Overall configuration of electronic watch]
As shown in FIG. 1, the electronic timepiece 1 includes a rotary weight 2, a crown 3, a power generation means 4, a rectification means 5, a current detection means 6, a secondary battery 7 that is a power storage means, an integration means 8, and a duration display control. Means 9, duration display motor drive means 10, duration display motor 11, oscillation means 12, frequency dividing means 13, time display control means 14 as operation control means, time display motor drive means 15, time display A motor 16 is provided.
The electronic timepiece 1 further includes battery voltage detection means 71 that is voltage detection means for detecting the voltage of the secondary battery 7.

Here, as shown in the hardware configuration diagram of FIG. 2, the current detecting means (current detecting circuit) 6, the frequency dividing means (frequency dividing circuit) 13, the motor driving means (motor control circuits) 10, 15 and the battery A voltage detection means (battery voltage detection circuit) 71 is connected to a central processing unit (CPU) 101, a read only memory (ROM) 102, and a random access memory (RAM) 103 via a bus 100 so that data can be input and output. Has been.
The integrating means 8, the duration display control means 9, and the time display control means 14 are realized by executing predetermined software using the CPU 101, the ROM 102, and the RAM 103.

As shown in FIG. 3, the electronic timepiece 1 includes a time display hand 20 including an hour hand 21, a minute hand 22, and a second hand 23, and the time display hand 20 is driven by the time display motor 16.
At the 9 o'clock position of the dial 24 of the electronic timepiece 1, a display hand (sub-display hand) 31 and a duration display scale plate 32, which are guides for duration display provided separately from the time display hands 20, are provided. Is provided. The indicator hand 31 is driven by the duration display motor 11.
A window 241 is formed at the 3 o'clock position of the dial 24, and the date can be displayed by a date wheel disposed on the back surface of the dial 24. The date dial is linked to the time display motor 16.

  The electronic timepiece 1 configured as described above includes the oscillating means 12, the frequency dividing means 13, and the time display control means 14, and constitutes a time measuring control means. A time display motor driving means 15 and a time display motor 16 are provided. The time display means includes the time display hand 20. And this time display means comprises the apparatus which becomes the object of operation control in the present invention.

The current detection means 6 constitutes a power generation detection means.
Furthermore, the duration display control means 9, the duration display motor driving means 10, the duration display motor 11, the display hand 31, and the duration display scale plate 32 are provided to constitute a duration display means. The indicator of the duration display means is composed of the display needle 31.
The time display control unit 14 is set using a reference signal from the operation stop unit 141 that stops the operation of the time display unit (device), the operation restart unit 142 that restarts the operation, and the frequency dividing unit 13. And a timer 143 for measuring the measured time.

[Power generation means]
As shown in FIG. 4, the power generation means 4 is configured to perform automatic winding power generation using the rotating weight 2 arranged inside the case of the timepiece 1 and manual winding power generation using the crown 3. Yes.
That is, the power generation means 4 transmits the mechanical energy from the crown 3 to the power generation apparatus 40, the automatic winding power transmission means 46 that transmits the mechanical energy from the rotary weight 2 to the power generation apparatus 40, and the power generation apparatus 40. Manual winding power transmission means 47.

  The power generator 40 is a general AC generator including a stator 42 in which a rotor 41 is rotatably arranged and a coil block 44 around which a coil 43 is wound.

The automatic winding power transmission means 46 includes a rotary spindle 461 that rotates integrally with the rotary spindle 2 and a switching wheel 463 that transmits the rotation of the rotary spindle 461. The switching wheel 463 meshes with the rotor 41 and when the rotating weight 2 rotates, the rotational force is transmitted to the rotor 41 via the rotating wheel 461 and the switching wheel 463, and power generation is performed in the power generation device 40.
The switching wheel 463 includes a ratchet wheel (not shown), and is configured so that transmission of force during manual winding power generation and transmission of force from movement of the rotating weight during automatic winding power generation do not interfere with each other. Yes.

The manual winding power transmission means 47 includes a winding stem 471, a chimney wheel 472, a round hole wheel 473, a swing wheel 474, a first manual winding transmission wheel 475, a second manual winding transmission wheel 476, a third manual winding transmission wheel 477, The switching wheel 463 is provided.
Since the crown 3 is attached to the tip of the winding stem 471, when the user turns the crown 3, the winding stem 471 rotates. The rotation of the winding stem 471 is transmitted to the swing wheel 474 via the chi-wheel 472 and the round hole wheel 473, and the rotation of the swing wheel 474 is transmitted to the first manual winding transmission wheel 475. The rotation is transmitted to the switching wheel 463 via the second manual winding transmission wheel 476 and the third manual winding transmission wheel 477.

  At this time, the swing wheel 474 meshes with the kana 475A of the first manual winding transmission wheel 475 only when the winding stem 471 rotates in one direction. Specifically, a slit 478A is provided in the receiver 478 to which the swing wheel 474 is attached, and a support shaft 474A of the swing wheel 474 is slidably fitted in the slit 478A. Therefore, in the case of FIG. 4, when the round hole wheel 473 is rotated clockwise by the winding stem operation, the swing wheel 474 rotates counterclockwise and moves toward the center of the first manual winding transmission wheel 475. Move and mesh with Kana 475A. On the other hand, when the first manual winding transmission wheel 475 is rotated counterclockwise by driving from the switching wheel 463 side, the swing wheel 474 is separated from the kana 475A while rotating clockwise, and the first manual winding transmission wheel 475 is connected to the first manual winding transmission wheel 475. Disengagement. With such a configuration, the rotation of the rotary spindle 2 is not transmitted to the winding stem 471.

[Rectifying means]
The rectifying means 5 rectifies the alternating current output from the power generator 40, and a known rectifier circuit such as a full-wave rectifier circuit or a half-wave rectifier circuit can be used.

[Current detection means]
The current detection means 6 is configured to be able to detect the magnitude of the current rectified by the rectification means 5.
As the current detection means 6, various conventionally known current detection circuits can be used. For example, a resistor arranged between the rectifying means 5 and the secondary battery 7, a peak detection circuit for measuring a current flowing through the resistor and detecting a peak value of the generated current, and a value detected by the peak detection circuit as a threshold value A current detecting means provided with a comparison circuit for comparison with can be used.

The current detection means 6 having such a configuration is driven at a predetermined sampling rate (sampling period) by a signal from the CPU 101 and samples the charging current charged in the secondary battery 7.
In the peak detection circuit, the generated current output from the rectifying means 5 is sampled, and the peak value in each sampling is detected. The comparison circuit is configured to be able to compare the peak value detected by the peak detection circuit with a predetermined threshold value and output the detection result signal to the integration means and the duration display control means 9.
Note that the comparison circuit of the present embodiment is configured such that the magnitude of the threshold, that is, the detection level can be switched by a signal from the CPU 101 based on the integrated value of the integrating means 8 or the like.

[Power storage means]
The power storage means is composed of a secondary battery 7 that can charge a generated current. The secondary battery 7 is composed of, for example, a lithium ion battery.
The output of the power generation means 4 is rectified by the rectification means 5 and charged to the secondary battery 7 via the current detection means 6. The power storage means is not limited to the secondary battery 7, and a capacitor may be used.

[Integration means]
The integration unit 8 calculates an average current value based on the detection result signal output from the current detection unit 6, and integrates the average current value.
That is, the integrating means 8 examines in advance the relationship between the peak value of the generated current at each sampling and the average current value in the case of the peak value, and stores the relationship table in the ROM 102. . Then, an average current value corresponding to the detection result signal (peak value) output from the current detection means 6 is obtained from the table, and the average current values are integrated.

The integration means 8 of this embodiment includes a power generation amount counter. The power generation amount counter is configured as a part of the RAM 103.
The power generation amount counter is a counter that accumulates the average current value every time of power generation and stores the integrated value (power generation amount) of one power generation.

[Duration display control means]
The duration display control means 9 calculates the duration based on the output of the integration means 8, that is, the power generation amount (storage amount) and the power consumption according to the operating state of the device output from the time display control means 14, The time display motor driving means 10 is controlled. That is, the duration display control unit 9 refers to the power generation amount counter of the integration unit 8, adds the duration according to the power generation amount, and subtracts the duration according to the power consumption by the operation of the time display unit. And has a duration counter to count. Then, the duration display control means 9 controls the duration display motor driving means 10 so as to indicate the counter value of the duration counter, that is, the duration, with the display hand 31.

The duration counter is used when the timing control means is activated and the duration is reset to 0, or from the time when the duration counter returns to 0 because the operation is continued without power generation as will be described later. The integrated value obtained by integrating the amount of power generation and consumption is counted.
Specifically, the duration counter counts the operation continuation time of the electronic timepiece 1, and each time the integrated value (power generation amount) of the generated current reaches a preset power generation amount for one day, The duration displayed at times is stepped up by one day. When the current consumption of the electronic timepiece 1 reaches one day, the integrated value of the duration counter is subtracted, and the display of the duration is stepped down by one day each time the duration is shortened by one day.

The daily power generation amount and current consumption are calculated by measuring the current consumption of the electronic timepiece 1 and calculating the daily power consumption, and setting the daily power generation amount based on the measured consumption amount. In this case, however, it is necessary to incorporate a circuit for measuring current consumption, which is difficult to realize in a small electronic timepiece 1 such as a wristwatch.
For this reason, in this embodiment, the standard daily consumption current of the electronic timepiece 1 is measured and calculated in advance in the factory, and the daily power generation amount corresponding to the consumption amount is set in advance and stored in the ROM 102 or the like. I remember it. If the accumulated power generation amount is the power generation amount for one day stored in the ROM 102, the duration counter is added for one day. On the other hand, every time when the electronic timepiece 1 has been operated for one day with the normal hand movement, it is assumed that the current consumption for one day has been consumed, and the duration counter is subtracted for one day.

[Motor drive means for duration display]
The duration display motor drive means 10 outputs a drive pulse to the motor coil 111 of the duration display motor 11 on the basis of the drive control signal output from the duration display control means 9, and the duration display motor 11. The drive is controlled.

[Driving wheel train for motor for displaying duration and indicator needle 31]
As shown in FIG. 4, the duration display motor 11 includes a coil block 112 around which a motor coil 111 is wound, and a stator 113 in which a rotor 114 is rotatably arranged.
An intermediate wheel 34 is engaged with the rotor pinion of the rotor 114, and a display wheel 33 is engaged with the intermediate wheel 34. The display hand 31 is attached to the display wheel 33. The display needle 31 displays the duration.

The display wheel 33 has teeth formed only on a part of the outer periphery thereof, and is provided so as to be rotatable only within a certain angle range by the motor 11, and the display hand 31 attached to the display wheel 33 is also integrated. It is provided so as to be rotatable in an angular range.
For this reason, the duration display scale plate 32 is formed in a flat sector shape, and the scale 321 is formed in an arc shape along the movement locus of the tip of the display needle 31.

The scale 321 is divided into ten sections from the 0th scale 321A indicating the needle position 0 to the 10th scale 321B indicating the needle position 10. That is, 11 scale lines of the scale 321 are provided from the needle position 0 to the needle position 10, and the state of 11 can be displayed.
And when the display hand 31 is used as a continuity meter that indicates the duration, it is configured to display a duration equivalent to one week (7 days) per scale and to display the duration for a maximum of 10 weeks. .

That is, when the counter value of the duration counter reaches 0 day, the display hand 31 indicates the 0th scale 321A. When the duration counter reaches 0 days, the information is also transmitted to the time display control means 14, and the operation stop unit 141 stops the hand movement of the time display means.
Further, when the duration counter reaches one week (7 days), the indicator hand 31 indicates the first scale. When the duration counter is 1 to 6 days, the indicator hand 31 moves to the corresponding positions obtained by dividing the 0th scale 321A and the first scale into 7 equal parts. Therefore, the user can grasp the duration even when the duration is 1 to 6 days by confirming the position of the display hand 31.
Hereinafter, every time the duration increases by one day, the display hand 31 moves. Therefore, every time the duration is increased by one week (7 days), the indicator hand 31 indicates the second to tenth scales.

  In the present embodiment, when the duration counter reaches 10 weeks (70 days), which is the maximum duration that can be displayed by the indicator hand 31, no further accumulation is performed even if power is generated. It is configured. That is, the maximum value of the duration counter is 70 days, and in this case, the display hand 31 indicates the tenth scale 321B.

When the power generation is performed and the duration counter is added for one day as described above, the duration display motor driving means 10 moves the indicator needle 31 counterclockwise for one day (1 between each scale). / 7 minutes) Move.
On the other hand, when power generation is not performed and the pointer moves for one day in the time display means, that is, when the power for one day is consumed and the duration counter is subtracted for one day, the duration display motor driving means 10 Moves the indicator hand 31 in a clockwise direction for one day (1/7 minutes between each scale).
When both power generation and hand movement are performed, the duration counter changes by adding or subtracting the increase due to power generation and the decrease due to movement.

[Timekeeping control means and time display means]
On the other hand, the time measuring control means and the time display means for displaying the normal time have the conventional general analog quartz timepiece structure, and thus detailed description thereof is omitted.
That is, the oscillating means 12 includes a crystal resonator and an oscillating circuit, and outputs a signal having a predetermined frequency. The frequency dividing means 13 divides the signal from the oscillating means 12 and outputs a reference signal of 1 Hz, for example.
The time display control unit 14 outputs a drive signal to the time display motor driving unit 15 based on the reference signal of the frequency dividing unit 13. Normally, each time a 1 Hz reference signal is input from the oscillating means 12, a drive signal is output. The time display motor drive means 15 inputs the time display motor 16 to the motor coil of the time display motor 16 based on the drive signal, and the time display motor 16 steps the time display pointer 20.

Note that the operation stop unit 141 of the time display control unit 14 enters a sleep mode in which the hand movement of the time display pointer 20 is stopped when the duration becomes 0 by the control signal from the duration display control unit 9. Configured to migrate.
In the present embodiment, a clock circuit is constituted by the oscillation means 12, the frequency dividing means 13, the time display control means 14, and the like.

[Secondary battery voltage detection means]
The voltage of the secondary battery 7 is detected by battery voltage detection means 71. The battery voltage detecting means 71 is constituted by a general voltage detecting means for detecting the voltage of the secondary battery 7 almost in real time at a predetermined sampling timing.

[Description of operation of electronic timepiece 1]
Next, the operation of the electronic timepiece 1 having such a configuration will be described with reference to the flowchart of FIG.
The control according to the flowchart of FIG. 5 is executed when the operation of the time display means (device) is stopped.

When the operation of the time display means is stopped, the operation resuming unit 142 of the time display control means 14 checks whether or not power generation is detected in the current detection means 6 that is the power generation detection means (step 1, Hereinafter, the step is abbreviated as “S”).
Until power generation is detected in S1, the operation resuming unit 142 continues the power generation detection check.

  On the other hand, when power generation is detected in S1, the operation restarting unit 142 detects the voltage (initial voltage) Vs1 of the secondary battery 7 at the time of power generation detection by the battery voltage detection means 71 and stores it in the RAM 103 (S2).

Next, the operation resuming unit 142 compares the voltage Vs1 stored in the RAM 103 with preset normal operation stop voltage V1, operation restart voltage V2, and system stop voltage V3.
Here, the magnitudes of the voltages V1, V2, and V3 are in a relationship of V1>V2> V3 as shown in FIG.
Accordingly, the operation resuming unit 142 first determines whether the initial voltage Vs1 is larger than the normal operation stop voltage V1 (S3). If No in S3, the operation resuming unit 142 determines whether the initial voltage Vs1 is larger than the operation resuming voltage V2. (S4). Further, in the case of No in S4, it is determined whether the initial voltage Vs1 is higher than the system stop voltage V3 (S5).

  Here, the system stop voltage V3 is a minimum voltage required to operate each electric circuit such as the CPU 101 of the electronic timepiece 1, and when the voltage of the secondary battery 7 becomes V3 or less, the oscillation means 12, the frequency divider, The means 13 and the CPU 101 are also stopped. For this reason, the time measuring means for measuring time is also stopped, and when the operation of the time display means is resumed, time adjustment is required.

The operation restart voltage V2 is a threshold value for determining whether the battery voltage is in a low region. That is, when the voltage of the secondary battery 7 is equal to or lower than the voltage V2 and greater than V3, the time display control unit 14 performs a warning operation to notify the user that the battery voltage is decreasing. The warning operation is to notify the user of an abnormal hand movement by performing an operation different from the normal hand movement, for example, by moving the second hand 23 in steps of 2 seconds.
In the present embodiment, the value of the voltage V2 is such that the voltage of the secondary battery 7 is V2, and the time display motor 16 has the power of the secondary battery 7 from the state where the power generation means 4 is not generating power. The voltage of the secondary battery 7 is set so as not to become V3 or less when the battery is operated only for the predetermined time T.

The normal operation stop voltage V1 is a threshold value for determining whether or not the normal operation is possible. The value of the voltage V1 is equal to the predetermined time T when the time display motor 16 uses only the power of the secondary battery 7 and the power is not generated by the power generation means 4 when the voltage of the secondary battery 7 is V1. Is set so that the voltage of the secondary battery 7 does not become V2 or less at the time when the battery is operated only.
Note that the voltage V1 is equal to the predetermined time T when the time display motor 16 uses only the power of the secondary battery 7 in a state where the power generation means 4 is not generating power when the voltage of the secondary battery 7 is V1. It is preferable to set so that the voltage of the secondary battery 7 does not become V2 or less even when the driving operation is performed a plurality of times (for example, 2 to 3 times).

Then, if “Yes” in S3, that is, if Vs1> V1, the operation resuming unit 142 resumes the operation of the apparatus in the first operation mode (S10).
Further, if “Yes” in S4, that is, if V1 ≧ Vs1> V2, the operation resuming unit 142 resumes the operation of the apparatus in the second operation mode (S20).
Further, if “Yes” in S5, that is, if V2 ≧ Vs1> V3, the operation resuming unit 142 resumes the operation of the apparatus in the third operation mode (S30).

  Further, if “No” in S5, that is, if V3 ≧ Vs1, this is the system stop voltage region, so the operation of the apparatus is not resumed, and the operation stop state by the operation stop unit 141 is maintained (S6).

  In addition, when the first to third operation modes by the operation resuming unit 142 are completed, the time display control unit 14 operates the apparatus in the normal operation mode except when the operation is stopped in the first to third operation modes ( S50).

Hereinafter, the operation in each operation mode will be described with reference to FIGS.
[First operation mode]
As described above, the first operation mode (S10) is an operation resumption mode that is executed when the voltage Vs1 of the secondary battery 7 at the time of operation resumption is greater than the normal operation stop voltage V1.
Thus, in the first operation mode, the voltage of the secondary battery 7 is in a relatively high state, and the present embodiment includes the duration display motor 11 and the display needle 31 that display the duration. Control is performed in consideration of the above.

That is, when the first operation mode is executed, the operation resuming unit 142 first sets a predetermined time T to the timer 143 and turns it on (drives), as well as instructing with the display hand 31. The duration is set to a predetermined time T (S11).
The predetermined time T can be appropriately set according to the electronic timepiece 1 to which the present embodiment is applied, and is set to about 1 to 7 days, for example.

Here, the timer 143 is set to measure an elapsed time since being turned on, and stop the measurement when the set timer time has elapsed.
In the present embodiment, a predetermined time T (in this embodiment, 7 days = 168 hours) is set as the timer time. For this reason, when one day has elapsed since the timer 143 was turned on, the timer 143 outputs 24 hours as the elapsed time.
The timer 143 is set so that the remaining timer time can also be output by subtracting the elapsed time from the timer time. For this reason, when one day has elapsed since the timer 143 was turned on, the timer 143 outputs 144 hours as the remaining timer time.

  Further, the operation resuming unit 142 drives the duration display motor 11 via the duration display control means 9 and the duration display motor drive means 10, and moves the indication of the display needle 31 to the position of the predetermined time T. . That is, if the predetermined time T is 7 days, the display hand 31 is moved to a position indicating the first scale of the scale 321.

Next, the operation restarting part 142 displays the duration by the display hand 31 via the duration display control means 9 (S12).
Here, the duration is determined by “predetermined time T−timer elapsed time ± accumulation increase / decrease”. Here, the amount of increase / decrease in power storage is added or subtracted because when the power generation is performed, the power storage amount (electric energy) for the power generation increases and the voltage of the secondary battery 7 also increases. This is because when the time display hand 20 is being moved by the motor 16 while the time is increased, the amount of storage (electric energy) for the driving is consumed and the voltage of the secondary battery 7 is lowered.
Therefore, specifically, the duration display control means 9 adds the duration corresponding to the power generation amount counted by the integration means 8 after restarting the operation to the time obtained by “predetermined time T−timer elapsed time”. Then, control is performed so as to display the duration calculated by subtracting the time based on the power consumption based on the hand movement continuation time of the time display indicator 20.

  Next, the operation resuming unit 142 determines whether the remaining time of the timer 143 is greater than 0 (S13). Until the remaining time of the timer reaches 0, S13 is determined to be “Yes”, so the display of the duration of S12 is continued and the hand movement of the time display hand 20 is also continued.

When it is determined in S13 that the remaining timer time is 0 hour or less (in the case of No), the operation resuming unit 142 stores the voltage of the secondary battery 7 detected by the battery voltage detecting unit 71 at S2 It is determined whether it is larger than the initial voltage Vs1 at the time of restarting operation (S14).
If it is determined “No” in S14, the current battery voltage is lower than the voltage Vs1 at the time of restarting operation, so the operation stopping unit 141 stops the operation of the time display indicator 20 ( S15), the mode is shifted to the sleep mode in which only the timing process is performed, and the first operation mode is ended (S16).
That is, as indicated by an arrow 151 in FIG. 6, when the initial voltage Vs1 at the time of restarting operation is greater than V1, and the voltage of the secondary battery 7 has decreased below the initial voltage Vs1 after a predetermined time has elapsed, When the time elapses, the operation stop unit 141 stops the operation of the device (time display means). In FIG. 6, the start time of operation is displayed with a white circle, the stop time of operation is displayed with a black circle, and the time point when the power generation state is changed to the generation stop state is displayed with a double circle.

On the other hand, when it determines with "Yes" by S14, it transfers to normal operation mode S50.
That is, in the first operation mode, the initial voltage Vs1 at the time of resuming operation is higher than the voltage V1 at which normal operation is performed, so that the voltage after a predetermined time has elapsed is higher than the initial voltage Vs1 as shown by the arrow 152 in FIG. In this case, it is not necessary to stop the operation at that time, and the operation can be continued. For this reason, in the case of the arrow 152, after the predetermined time has elapsed, the processing is performed in the normal operation mode S50. Specific processing in this normal operation mode S50 will be described later.

[Second operation mode]
As described above, the second operation mode (S20) is an operation resumption mode that is executed when the voltage Vs1 of the secondary battery 7 at the time of resuming operation is equal to or lower than the voltage V1 and higher than the voltage V2 that is the warning operation region. .

  When the second operation mode is executed, the operation resuming unit 142 sets a predetermined time T to the timer 143 and turns it on (drives), as shown in FIG. The duration indicated by the needle 31 is set to the predetermined time T (S21).

  Next, the operation resuming unit 142 displays the duration by the display hand 31 via the duration display control means 9 (S22). The duration is obtained by “predetermined time T−timer elapsed time”. Here, as in the first operation mode, the increase / decrease of the power storage increase / decrease is not performed because the voltage Vs1 at the time of restarting the operation is as low as the voltage V1 or less necessary for the normal operation. This is because priority was given to determining whether or not to continue driving at the time. That is, even if power is generated during the predetermined time T, control is performed so that the duration is not added at that time.

  Then, the operation resuming unit 142 determines whether or not the remaining time of the timer is greater than 0 (S23), and continues the display of the duration of S22 until it becomes “0” or less (“Yes” in S23) to display the time. The operation of the needle 20 is also continued. Since the timer elapsed time always increases, the duration will always decrease.

When it is determined in S23 that the remaining timer time is 0 hour or less (in the case of No), the operation resuming unit 142 determines whether the voltage of the secondary battery 7 at that time is greater than the initial voltage Vs1 (S24). ).
If it is determined “No” in S24, the current battery voltage is lower than the voltage Vs1 at the time of restarting operation, so the operation stopping unit 141 stops the operation of the time display indicator 20 ( S25), the mode is shifted to the sleep mode in which only the timing process is performed, and the second operation mode is ended (S26).
That is, as indicated by an arrow 105 in FIG. 9, when V1 ≧ Vs1> V2 and when the voltage of the secondary battery 7 is lower than the initial voltage Vs1 when a predetermined time elapses, the time when the predetermined time elapses. Thus, the operation stop unit 141 stops the operation of the device (time display means).

On the other hand, when it is determined as “Yes” in S24, since the power generation is being performed and the voltage of the secondary battery 7 is high, the operation resuming unit 142 continues the operation (S27). At this time, the voltage of the secondary battery 7 is also periodically checked.
Then, the operation resuming unit 142 determines whether the battery voltage is higher than the normal operation stop voltage V1 (S28). That is, even if it is determined “Yes” in S24 and it can be confirmed that power generation is being performed, in order to return to normal operation, it is determined whether the voltage of the secondary battery 7 has returned to a level higher than V1. This is because it is necessary to confirm.
Therefore, when it is determined as “Yes” in S28, the time display control means 14 shifts to the normal operation mode S50. For this reason, in the case of the arrow 156, after the predetermined time has elapsed, the processing is performed in the normal operation mode S50.

  On the other hand, if “No” is determined in S28, the process returns to S24 and continues. For this reason, when the process of S24, S27, and S28 is repeated, if the battery voltage decreases to the initial voltage Vs1 or less due to the stoppage of power generation, the operation is stopped at that time (S25).

[Third operation mode]
As described above, the third operation mode (S30) is an operation resumption mode that is executed when the voltage Vs1 of the secondary battery 7 at the time of operation resumption is equal to or lower than the operation resumption voltage V2 and higher than the system stop voltage V3.

  When the third operation mode is executed, as shown in FIG. 10, the operation resuming unit 142 drives the second hand 23 of the time display hand 20 in the 2-second hand movement mode and displays the display hand 31 as shown in FIG. The duration display indicated by is set to 0 hour (S31).

Next, the operation resuming unit 142 determines whether the voltage of the secondary battery 7 is greater than the initial voltage Vs1 (S32).
And when it determines with "No" by S32, since the present battery voltage is falling rather than the initial voltage Vs1, the driving | operation stop part 141 stops the driving | operation of the time display indicator 20 (S33), The operation mode shifts to the sleep mode where only the timing process is performed, and the third operation mode is ended (S34).

On the other hand, when it is determined as “Yes” in S32, since the power is being generated and the voltage of the secondary battery 7 is high, the operation resuming unit 142 operates in the 2-second hand movement mode. (S35). At this time, the voltage of the secondary battery 7 is also periodically checked.
Then, the operation resuming unit 142 determines whether the battery voltage is higher than the voltage V2 (S36). If "No" is determined in S36, the process returns to S32 and continues.

  On the other hand, when it is determined as “Yes” in S36, the voltage of the secondary battery 7 is out of the warning operation region, so the operation resuming unit 142 releases the 2-second operation (S37), and the operation by the normal operation is performed. (S38). At this time, the voltage of the secondary battery 7 is also periodically checked.

  Then, the operation resuming unit 142 determines whether the battery voltage is higher than the normal operation stop voltage V1 (S39). And when it determines with "Yes" by S39, the time display control means 14 transfers to normal operation mode S50.

  On the other hand, if “No” is determined in S39, the process returns to S36 and continues. For this reason, even if the battery voltage becomes higher than V2 and the 2-second hand movement is released, the power generation is stopped and the battery voltage is reduced to V2 or lower before the shift to the normal operation mode. It is determined as “No”, and the processes of S32, S35, and S36 are repeated. Therefore, S35 may be executed again to move the hands for 2 seconds.

[Normal operation mode]
As described above, the normal operation mode (S50) is executed by the time display control means 14 when the voltage of the secondary battery 7 becomes higher than the voltage V1 for determining whether the secondary battery 7 is in the normal operation region after restarting operation. This is the operation mode.
In the normal operation mode, the secondary battery 7 is in a high voltage state, and in the present embodiment, control is performed in consideration of the provision of the duration display motor 11 and the display needle 31 for displaying the duration. Is called.

That is, when the normal operation mode is entered, as shown in FIG. 11, the duration display control means 9 displays the duration indicated by the display hand 31 in accordance with the amount of increase or decrease in the storage after the battery voltage becomes V1. Time is set (S51).
That is, when the voltage of the secondary battery 7 is V1, the duration is 0 hour, the time based on the power generation amount after the voltage of the secondary battery 7 becomes V1 is added, and the time based on the power consumption is subtracted To do. For this reason, when shifting to the normal operation mode, the duration display is usually larger than zero.

  And the time display control means 14 determines whether a duration display is larger than 0 (S52). Here, when the duration display is 0 or less, the operation stop unit 141 stops the operation of the time display hand 20 (S53), shifts to the sleep mode in which only the time measurement processing is performed, and enters the normal operation mode. Is finished (S54).

  On the other hand, when it is determined as “Yes” in S52, the time display control unit 14 determines whether the duration display is less than max (S55). In this embodiment, since the scale 321 is 10 weeks (70 days = 1680 hours), it is determined whether or not the duration display set by the voltage of the secondary battery 7 is less than this max value (= 1680 hours). judge.

  When it is determined “No” in S55, the time display control unit 14 sets the duration display to max (S56) and continues the normal operation of the time display hand 20 (S57). Further, the voltage of the secondary battery 7 is periodically checked while continuing the operation. And it repeats from the process of S52.

On the other hand, when it is determined as “Yes” in S55, the time display control means 14 adds and subtracts the time based on the power storage increase / decrease after setting the duration in the previous S54 or S56 to the new last duration. Time is calculated (S58).
For example, when calculating the duration time every hour, add the time based on the power generation amount after the previous calculation time to the last time calculated last time, and calculate the time based on the power consumption amount consumed by hand movement etc. Subtract to calculate a new duration.
Then, after calculating the duration in S58, the operation is continued in S57, and the process returns to S52.

Therefore, in the normal operation mode, when power generation is performed, as shown by arrows 152 and 156 in FIGS. 6 and 9, the duration is added according to the amount of power generation, and the operation of the time display indicator 20 is performed. Will continue.
On the other hand, when the power generation is stopped, as shown by arrows 153 and 157 in FIGS. 6 and 9, the battery voltage is lowered due to the power consumption by the hand movement, and the duration is also reduced. Then, the operation is stopped when the duration time becomes zero (black circles ahead of the arrows 153 and 157).
In the initial setting, the duration is set to be 0 hours when the battery voltage is V1, and the voltage at which the duration is 0 hours is generated from the state where the duration is the maximum value. If it continues, it may rise but not fall. For this reason, in the normal operation mode, when the duration display is 0 hour, the battery voltage is maintained at V1 or higher.

According to this embodiment, there are the following effects.
(1) When resuming operation from the operation stop state (sleep mode), the voltage Vs1 of the secondary battery 7 at the time of resumption of operation is detected and recorded, and the first to third operation modes are selectively used according to the voltage. ing. For this reason, appropriate operation resumption processing can be performed according to the voltage Vs1.
In particular, in the first and second operation modes, the operation is controlled to continue for at least the predetermined time T (7 days in the present embodiment), so that the operation can be prevented from stopping again immediately after the operation is resumed. In addition to improving convenience, it is possible to prevent the user from feeling uneasy such as the timepiece 1 being broken.
In addition, even if the voltage of the secondary battery 7 is equal to or lower than the normal operation stop voltage V1, if it is greater than the operation restart voltage V2, the stopped watch can be used immediately and continuously for a predetermined time. Can be improved.

(2) In the present embodiment, when obtaining the duration in S12, S51, and S58, if there is a power generation amount for a predetermined duration, the duration is added by that amount, and the duration is increased by moving the hand. Since the duration is subtracted by that amount of power consumption, the duration can always be accurately determined, and the processing can be executed with a simple algorithm, thereby reducing the processing load.

(3) In this embodiment, the hand movement may continue while the duration display is “0”. However, when the hand movement is stopped, the duration is always “0”. For this reason, since the hand movement does not stop in the state in which the remaining time is displayed in the duration display, the user can accurately grasp the minimum time during which the hand can be continued and the convenience is improved.

(4) When the hand movement is stopped, the secondary battery 7 can be set so that the voltage of the electronic timepiece 1 can be normally operated. The system can immediately return to a stable operating state, and the user can immediately check the time, improving convenience.

(5) In the normal operation mode, since the duration has a max value, even if power generation continues and the voltage of the secondary battery 7 increases, the maximum duration is limited to the max value. For this reason, when the battery voltage rises after power generation after the duration has reached the maximum value, the battery voltage when the duration is 0 and the operation is stopped can be increased by the increase.
Therefore, the battery voltage can be maintained at a high level when the operation is resumed, and the electronic timepiece 1 can be immediately used to improve convenience.

[Second Embodiment]
Next, a second embodiment of the present invention will be described with reference to FIGS.
The electronic timepiece 1 according to the second embodiment is different from the first embodiment in that it does not include a duration display unit that displays a duration. That is, in the second embodiment, the duration display motor driving means 10, the duration display motor 11, the display needle 31, the duration display scale plate 32, and the like are not provided. However, since the other configuration is the same as that of the first embodiment, the description thereof is omitted.

Moreover, in 2nd Embodiment, since the duration display means is not provided, control by duration is not performed in the process at the time of driving | operation restart.
Control at the time of resuming operation in the second embodiment will be described below.

Also in the second embodiment, when power generation is detected in the operation stop state, the operation resuming unit 142 executes the operation resuming process shown in FIG.
Here, the processing of S61 to S66 in FIG. 12 is the same as the processing of S1 to S6 in the first embodiment, and thus description thereof is omitted.
Then, if “Yes” in S63, that is, if Vs1> V1, the operation resuming unit 142 resumes the operation of the apparatus in the fourth operation mode (S70).
Further, if “Yes” in S64, that is, if V1 ≧ Vs1> V2, the operation resuming unit 142 resumes the operation of the apparatus in the fifth operation mode (S80).
Further, if “Yes” in S65, that is, if V2 ≧ Vs1> V3, the operation resuming unit 142 resumes the operation of the apparatus in the sixth operation mode (S90).

Hereinafter, the operation in each of the fourth to sixth operation modes will be described with reference to FIGS.
[Fourth operation mode]
In the fourth operation mode (S70), the same processing is performed with respect to the processing in the first operation mode (S10) except for the processing related to the display of the duration.
That is, when the fourth operation mode is executed, the operation resuming unit 142 turns on (drives) the timer 143 whose timer time is set to the predetermined time T as shown in FIG. The hand movement (operation of the apparatus) is resumed (S71).

  Next, the operation resuming unit 142 determines whether the remaining timer time is greater than 0 hour (S72). In the case of “Yes” in S72, that is, when the elapsed time of the timer has not reached the predetermined time T and the remaining time of the timer is greater than 0, the hand movement of the time display hand 20 is continued.

On the other hand, when it is determined in S72 that the remaining timer time is 0 hour or less (in the case of No), the operation resuming unit 142 has the voltage of the secondary battery 7 larger than the initial voltage Vs1 at the time of resuming operation stored in S62. Is determined (S73).
If it is determined “No” in S73, the operation stopping unit 141 stops the operation of the time display hand 20 (S74), shifts to the sleep mode in which only the time measuring process is performed, and the fourth operation mode is set. The process ends (S75).

On the other hand, if it is determined as “Yes” in S73, the hand movement of the time display hand 20 is continued and the voltage is periodically checked (S76). The process of S76 is repeated until “No” is determined in S73.
Therefore, in the fourth operation mode, the operation resuming unit 142 continues the operation of the time display hand 20 for at least the predetermined time T after the operation is resumed, and then continues the operation until the battery voltage returns to the initial voltage Vs1. When the voltage returns to the initial voltage Vs1, the operation is stopped.

Therefore, if the voltage increases due to power generation after restarting operation as shown by arrow 161 in FIG. 14, normal operation continues even after a predetermined time T has elapsed, and as indicated by arrow 162, When the voltage drops and returns to the initial voltage Vs1, the operation is stopped.
On the other hand, as indicated by an arrow 163 in FIG. 15, when there is no power generation and the voltage drops after resuming operation, the battery voltage is equal to or lower than the initial voltage Vs1 when the predetermined time T has elapsed, and at that time Stop operation at. If the operation restart and the operation stop are repeated in a state where sufficient power generation is not performed, the voltage of the secondary battery 7 gradually decreases. For this reason, as shown by an arrow 164, even when the initial voltage Vs1 at the start of operation is larger than the normal operation stop voltage V1, the operation of the predetermined time T causes the voltage of the secondary battery 7 to drop to V1 or less and stop. Will do. Therefore, when the operation is resumed in this state, the operation is performed in the fifth operation mode described below.

  In the fourth operation mode, the operation is stopped when the battery voltage becomes equal to or lower than the initial voltage Vs1 in S73, but the operation is controlled to be stopped when the battery voltage becomes equal to or lower than the normal operation stop voltage V1. Also good.

[Fifth operation mode]
In the fifth operation mode (S80), the same process as the second operation mode is performed except for the process related to the duration display.
When the fifth operation mode is executed, the operation resuming unit 142 sets a predetermined time T to the timer 143 and turns it on (drives), as shown in FIG. 16, and resumes the operation (S81).

Next, the operation resuming unit 142 determines whether the remaining timer time is greater than 0 hour (S82). In the case of “Yes” in S82, the hand movement of the time display hand 20 is continued.
On the other hand, when it is determined in S82 that the remaining timer time is 0 hour or less (in the case of No), the operation resuming unit 142 has the voltage of the secondary battery 7 higher than the initial voltage Vs1 at the time of resuming operation stored in S62. Is determined (S83).
When it is determined “No” in S83, the operation stopping unit 141 stops the operation of the time indicating hand 20 (S84), shifts to the sleep mode in which only the time measurement processing is performed, and the fifth operation mode is changed. The process ends (S85).

On the other hand, if it is determined as “Yes” in S83, the hand movement of the time display hand 20 is continued and the voltage is periodically checked (S86).
Then, it is determined whether or not the battery voltage is larger than the threshold voltage V1 (S87). If it is determined as “No”, the process is repeated from S83.
When it is determined “Yes” in S87, the operation resuming unit 142 continues normal operation (operation of the apparatus) and periodically checks the voltage (S88).

Then, the operation resuming unit 142 determines whether or not the battery voltage confirmed in S88 maintains a value larger than V1 (S89).
If it is determined as “No” in S89, the operation is stopped (S84), and the fifth operation mode is ended (S85).
Further, while it is determined as “Yes” in S89, the processes in S88 and S89 are repeated. That is, in the fifth operation mode, when the battery voltage becomes higher than the normal operation stop voltage V1 in S87, the operation is continued until the battery voltage drops below the voltage V1 again, as in the normal operation mode. The operation is stopped when the voltage drops below V1.

[Sixth operation mode]
In the sixth operation mode (S90), the same processing as that in the third operation mode (S30) is performed except for the processing related to the duration display.

When the sixth operation mode is executed, as shown in FIG. 17, the operation resuming unit 142 drives the second hand 23 of the time indicating hand 20 in the 2-second hand movement mode because of the warning operation region (S91).
The subsequent processes from S92 to S99 are the same as the processes from S32 to S39 in the third operation mode, and thus the description thereof is omitted.
Moreover, since the process of S100, S101 performed after determining with "Yes" by S99 is the same as the process of S88, S89 of a 5th operation mode, description is abbreviate | omitted.

According to such 2nd Embodiment, in the said 1st Embodiment, the same effect other than the effect acquired by providing duration display means is acquired.
For example, when the operation is resumed from the operation stop state (sleep mode), the voltage Vs1 of the secondary battery 7 at the time of the operation resumption is detected and recorded, and the fourth to sixth operation modes are selectively used according to the voltage. Yes. For this reason, appropriate operation resumption processing can be performed according to the voltage Vs1.
In particular, in the fourth and fifth operation modes, since the operation is controlled to continue at least for a predetermined time T (7 days in the present embodiment), it is possible to prevent the operation from being stopped again immediately after the operation is resumed. In addition to improving convenience, it is possible to prevent the user from feeling uneasy such as the timepiece 1 being broken.
In addition, even if the voltage of the secondary battery 7 is equal to or lower than the normal operation stop voltage V1, if it is greater than the operation restart voltage V2, the stopped watch can be used immediately and continuously for a predetermined time. Can be improved.

It should be noted that the present invention is not limited to the above-described embodiments, and modifications, improvements, and the like within the scope that can achieve the object of the present invention are included in the present invention.
For example, although the predetermined time T is a fixed value set in advance, the predetermined time T may be changed according to the storage battery voltage.
For example, the length of the predetermined time T may be set by the storage battery voltage detected by the battery voltage detection means 71. That is, as the voltage of the secondary battery 7 is higher, the time until the voltage is reduced to the operation resumption voltage V2 or lower when operating in the non-power generation state can be increased. Therefore, the predetermined time T may be increased as the voltage of the secondary battery 7 is higher.

Furthermore, the amount by which the predetermined time T is changed when the voltage increases may be set according to the voltage of the secondary battery 7. For example, when the characteristics of the secondary battery 7 have a relationship between the storage amount and the voltage as shown in FIG. 18, in the A section (about 1.2 to 1.4 V), the storage amount increases with a slight voltage fluctuation. Will increase. For this reason, compared with B section (about 0.9-1.2V) and C section (about 1.4-1.7V), in A section, the change value of the predetermined time when a voltage changes is shown. You just have to take it big. For example, when the predetermined time is changed every time 0.1V is changed, the change amount of the predetermined time when 0.1V is changed in the A section is more than the change amount when 0.1V is changed in the B and C sections. Can be set larger.
Thus, by changing the amount of change (the length of the additional time) of the predetermined time T according to the storage battery voltage, a more stable operation can be given to the device.

Moreover, as a display method of the duration by the display needle 31 of the first embodiment, when the duration is shortened, the duration may be displayed more finely in units of hours, minutes, etc. by a folded display or the like. .
For example, when the duration is one day, the needle positions 0 to 10 are switched to instructions for 0, 1, 2, 3, 4, 5, 6, 7, 14, 19, 24 hours, respectively. Further, the needle positions 0 to 10 may be displayed at 0, 3, 6, 12, 15, 20, 25, 30, 45, and 60 minutes when the duration is 1 hour. It may be displayed by switching to the instruction or the like.
In the first embodiment, since the hand movement is stopped when the duration time becomes zero, the remaining time accurately displays the remaining time during which the hand movement operation continues. Therefore, if the duration is displayed in units of hours or minutes, the user can accurately grasp the remaining time during which the operation continues.

Further, in each of the embodiments described above, when the operation is stopped, the operation stop unit 141 stops the time display motor driving means 15 and the time display motor 16 to stop only the time display by the hands 20 and oscillates. The driving of the means 12, the frequency dividing means 13, and the time display control means 14 is continued, and the time is internally counted so that the time display is returned to the current time when a predetermined amount of power is generated. However, the driving of the oscillating means 12, the frequency dividing means 13, and the time display control means 14 may also be stopped to stop the timepiece operation completely.
In addition, the stop mode when the duration becomes 0 may be set so that the user can select from the sleep mode of the embodiment and the mode in which the clock operation is completely stopped.

  The duration display means is not limited to one in which the display needle 31 is movable only within a certain angle range, and one in which the display needle 31 is provided to be able to rotate once (360 degrees) may be used. However, like the display hand 31 of the above-described embodiment, when it is moved within a certain angle range, the size of the pointer can be increased and the visibility can be improved when it is incorporated in the dial portion of the timepiece 1 as a secondary hand.

  Further, the duration display means is not limited to the display using the display needle 31, but may be displayed using numbers, indicators, or the like on a display means such as a liquid crystal display. In particular, in the first embodiment, since the duration is to accurately display the operation duration, the exact duration can be displayed to the user by digitally displaying the duration. .

  As the power generation device 40, various power generation devices such as a power generation device using an external AC magnetic field, a solar power generation device, and a temperature difference power generation device can be used in addition to the manual winding power generation device and the automatic winding power generation device as in the above embodiment. In addition, the electronic timepiece 1 may incorporate one of the various types of power generation devices, or may combine a plurality of types of power generation devices.

  Further, the present invention is not limited to a wristwatch, and can be applied to other watches such as a pocket watch, a table clock, and a wall clock as long as it has a power generation function. Furthermore, the present invention is not limited to those applied to the electronically controlled mechanical timepiece as in the above-described embodiment, but includes various types of clocks such as table clocks and clocks, portable watches, portable sphygmomanometers, cellular phones, pagers, and pedometers. It can also be applied to various electronic devices such as a calculator, a portable personal computer, an electronic notebook, a portable radio, a music box, a metronome, and an electric razor. In particular, it has a power generation function and is suitable for portable electronic devices that are not always used but are used when necessary.

  DESCRIPTION OF SYMBOLS 1 ... Electronic timepiece, 4 ... Electric power generation means, 6 ... Current detection means, 7 ... Secondary battery, 8 ... Integration means, 9 ... Duration display control means, 10 ... Duration display motor drive means, 11 ... Duration display 14 ... Time display control means, 15 ... Time display motor drive means, 16 ... Time display motor, 20 ... Time display pointer, 31 ... Display hand, 32 ... Scale plate for duration display, 40 ... Power generation Device 71: Battery voltage detecting means 141 ... Operation stop unit 142 ... Operation restart unit 143 ... Timer.

Claims (7)

Power generation means;
Power storage means for storing electrical energy generated by the power generation means;
A device operated by the electrical energy stored in the power storage means;
Power generation detection means for detecting the power generation state of the power generation means;
Voltage detection means for detecting the voltage of the power storage means;
Operation control means for controlling the operation state of the device,
The operation control means includes
When the voltage detected by the voltage detection means drops below a normal operation stop voltage, an operation stop unit that controls the device to an operation stop state;
When the device is in an operation stop state, comprising an operation restarting unit that restarts the operation of the device,
The operation restarting unit detects a power generation state by the power generation detection unit, and at this time, when the initial voltage detected by the voltage detection unit is larger than the operation restart voltage, at least a predetermined time set in advance Continues operation of the device,
The operation restart voltage is lower than the normal operation stop voltage, and when the power generation means is in a non-power generation state, the apparatus is operated for the predetermined time only with the electric energy accumulated in the power storage means. However, the voltage value of the said electrical storage means is set to the value which does not fall below the stop voltage which cannot drive | operate the said apparatus. The electronic device with an electric power generation function characterized by the above-mentioned. In the electronic device with a power generation function according to claim 1,
The operation stop unit is
When the operation is resumed in the operation resuming unit and the operation for the predetermined time is performed,
When the voltage of the power storage means is equal to or lower than the initial voltage, the operation of the device is stopped,
When the voltage of the power storage means is larger than the initial voltage, and then the voltage of the power storage means becomes higher than the normal operation stop voltage without dropping below the initial voltage, the process proceeds to the normal operation mode. Continue operation until it drops below the normal operation stop voltage again,
If the voltage of the power storage means is larger than the initial voltage and then the voltage of the power storage means falls below the initial voltage without becoming higher than the normal operation stop voltage, the operation is stopped at that time. An electronic device with a power generation function. In the electronic device with a power generation function according to claim 2,
The operation stop unit is
When the initial voltage is higher than the normal operation stop voltage, and the voltage of the power storage means is higher than the initial voltage when the operation is resumed by the operation resuming unit and the operation for the predetermined time is performed. Thereafter, the operation of the apparatus is stopped when the voltage of the power storage means drops below the initial voltage. In the electronic device with a power generation function according to claim 1,
A timer for measuring the elapsed time after restarting the operation of the device;
A duration display means for displaying the duration of operation of the device,
When operation of the apparatus is resumed by the operation resuming unit,
The duration display means displays a remaining time as a duration obtained by subtracting an elapsed time measured by the timer from the predetermined time,
The said operation resumption part continues the driving | operation of the said apparatus until the duration displayed by the said duration display means becomes 0 hour at least. The electronic device with a power generation function characterized by the above-mentioned. In the electronic device with a power generation function according to claim 4,
The operation stop unit is
When the operation is resumed in the operation resuming unit and the operation for the predetermined time is performed,
When the voltage of the power storage means is equal to or lower than the initial voltage, the operation of the device is stopped,
When the voltage of the power storage means is larger than the initial voltage, and then the voltage of the power storage means becomes higher than the normal operation stop voltage without lowering below the initial voltage, transition to the normal operation mode,
If the voltage of the power storage means is greater than the initial voltage, and then the voltage of the power storage means drops below the initial voltage without becoming greater than the normal operation stop voltage, the operation is stopped at that time. ,
In the normal operation mode,
When the electrical energy from the power generation means is stored in the power storage means, the duration display means adds the duration according to the amount of power stored, and the electrical energy of the power storage means is consumed during operation of the device In some cases, the duration is subtracted according to its consumption,
The said operation resumption part continues the driving | operation of the said apparatus until the duration displayed by the said duration display means becomes 0 hours. The electronic device with a power generation function characterized by the above-mentioned. In the electronic device with a power generation function according to any one of claims 1 to 5,
The normal operation stop voltage is
When the power generation means is in a non-power generation state, the voltage value of the power storage means is resumed even if the device is operated for a predetermined number of times using the electrical energy stored in the power storage means. An electronic device with a power generation function, characterized in that it is set to a value that does not drop below the voltage. In the electronic device with a power generation function according to any one of claims 1 to 6,
The said operation resumption part sets the length of the said predetermined time with the value of the said initial voltage. The electronic device with an electric power generation function characterized by the above-mentioned.

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