JP3726577B2 - Clock and control method thereof - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a timepiece and a control method therefor, and more specifically, a mechanical energy source, a generator that is driven by the mechanical energy source and generates an induced power to output electrical energy, and the generator The present invention relates to a timepiece having a power storage device that stores output electrical energy, and a rotation control device that is driven by the electrical energy supplied from the power storage device and controls the rotation cycle of the generator, and a control method therefor.
[0002]
[Background]
The mechanical energy generated when the mainspring opens is converted into electrical energy by a generator, and the rotation control device is operated by the electrical energy to control the value of the current flowing through the coil of the generator. Japanese Patent Laid-Open No. 8-5758 is known as an electronically controlled mechanical timepiece that accurately drives a pointer to be displayed and displays the time accurately.
[0003]
At this time, the electric energy from the generator is once supplied to the smoothing capacitor, and the circuit control means is driven by the electric power from the capacitor. The capacitor generates an alternating current synchronized with the rotation period of the generator. Since electric power is always input, it is not necessary to maintain the electric power for enabling the operation of the circuit control means including the IC and the crystal resonator for a long period of time. For this reason, conventionally, a capacitor having a relatively small capacitance capable of operating an IC or a crystal resonator for several seconds has been used.
[0004]
This electronically controlled mechanical timepiece is characterized in that it does not require a motor in order to drive the hands using the mainspring as a power source, and has a small number of parts and is inexpensive. In addition, only a small amount of electrical energy needed to operate the electronic circuit need be generated, and the watch could be operated with less input energy.
[0005]
By the way, such an electronically controlled mechanical timepiece has the following problems. That is, when performing hand setting (time setting) that is normally performed by pulling out the crown, the hour, minute, and second hands are stopped so that the time can be accurately set. Since stopping the pointer would stop the train wheel, the generator was also stopped.
[0006]
For this reason, while the input of electromotive force from the generator to the smoothing capacitor is stopped, the IC continues to drive, so that the electric charge stored in the capacitor is discharged to the IC side and the terminal voltage is lowered. The circuit control means was also stopped.
[0007]
Therefore, even if the crown is pushed in after the needle alignment and the generator is driven, it takes time to charge the capacitor until the terminal voltage of the capacitor reaches the IC drive start voltage (voltage that can drive the IC). In particular, since the rotor of the generator is provided with an inertia disc, the rotor rotates at a gradually increased speed when the generator starts up. For this reason, a large torque is required when the rotor starts to rotate, and it takes time until the rotational speed increases, and as a result, the amount of power output from the generator is reduced at the beginning of the generator and the terminal voltage of the capacitor is reduced. It took a long time to charge until the voltage reaches the IC drive start voltage. For this reason, it takes time from the start of driving the generator until the IC operates, and there is a problem that accurate time control cannot be performed during that time.
[0008]
For this reason, as described in Japanese Patent Application Laid-Open No. 11-14768, the present applicant makes the drive lever come into contact with the gear of the train wheel, and the drive lever according to the pushing operation of the crown at the end of needle alignment. By rotating the rotor by applying a mechanical rotational force to the gear with the friction force at that time, the rotor rotation speed is increased from the beginning to quickly increase the amount of power generation and charging Invented a method to reduce time. As a result, it took about 15 seconds from the start of driving the generator until the IC was operated, but it was shortened to about 1/10 of about 1.5 seconds.
[0009]
[Problems to be solved by the invention]
By the way, in the rotation control of the generator, the reference signal from the crystal resonator is compared with the rotation detection signal of the generator, and the brake amount is set according to the difference.
[0010]
And until about 1.5 seconds when the IC immediately after the needle alignment is operated, the IC is not operated, so there is no brake control and the generator is in a free-run state. For this reason, especially when the rotor is rotated using a drive lever, the rotation cycle (rotation speed) of the rotor is much faster than the reference signal cycle.
[0011]
Therefore, when the IC is activated, the generator often rotates at a higher speed than usual. For this reason, immediately after the operation of the IC, in order to return the generator to the reference cycle, it is necessary to perform control (full brake control) to keep the brake applied for one cycle of the reference signal.
[0012]
In this case, the hand movement of the needle suddenly changes from the free-run state (fast movement) until the IC is activated to full brake control (slow movement). There's a problem.
[0013]
An object of the present invention is to provide a timepiece and a control method therefor that can eliminate a sudden change in the hand movement after the hand alignment operation and can eliminate the wobbling of the hand movement.
[0016]
[Means for Solving the Problems]
  A timepiece according to the present invention includes a mechanical energy source, a generator that is driven by the mechanical energy source to generate an induced electric power to supply electric energy, and is driven by the electric energy to rotate the generator. In a timepiece having a rotation control device for controlling a cycle, the rotation control device compares a reference signal generated based on a signal from a time standard source with a rotation detection signal corresponding to the rotation cycle of the generator. A brake control device for setting the brake time of the generator;The needle alignment operation has been completed and the normal hand movement has been restored.End of needle alignment operationPredetermined time immediately afterThe brake control device applies the brake over one cycle of the reference signal.If it detects a needIncludes a movement change suppression device that changes to a movement change suppression control of a brake pattern that is set in advance..
[0017]
  In the present invention as described above, it is necessary to apply a brake over a period of one or more of the reference period when the rotation speed of the generator is fast after the needle alignment operation.ButSince the time for which the brake is always turned off within one cycle is secured, it is possible to eliminate the full brake control that keeps applying the brake. For this reason, there is no sudden change in the needle movement, and the wobbling of the needle can be reduced. At this time, the time until the needle instruction error is eliminated is longer than in the prior art. However, since the error can be eliminated in several seconds to several tens of seconds, there is no practical problem. Furthermore, since the movement change suppression control is performed when it is necessary to apply the brake for one period or more of the reference period, in other cases, the normal movement control can be performed. Time can be shortened.
[0018]
In this case, the brake control device includes an up / down counter in which one of the rotation detection signal and the reference signal is input as an up-count signal and the other is input as a down-count signal. A brake is applied to the generator when it is greater than or equal to a set value, and the brake of the generator is released when it is less than the first set value. It is preferable that the operation is performed when the second set value is larger than the first set value.
[0019]
If the up / down counter is used, the count values can be compared simultaneously with the count of the rotation detection signal and the reference signal, so that the configuration is further simplified and the difference between the count values can be easily obtained. Furthermore, the state (timing) for canceling the hand movement fluctuation suppression control can be easily set only by appropriately setting the second set value, and adjustments and settings according to various clocks are possible.
[0020]
Moreover, it is preferable that the ratio of the time which applies a brake and the time which turns off a brake is preset for the said brake pattern.
[0021]
Furthermore, it is preferable that the ratio of the time to turn off the brake is set in a plurality of stages, and the movement change suppressing device selects the ratio of the brake off time according to the rotation cycle of the generator.
[0022]
If the time to turn off the brake is set in advance, for example, 75%, 50%, and 25% with respect to one reference period, compared to the case where the brake off time is calculated from the actual generator rotation period. Therefore, the configuration of the hand movement fluctuation suppressing device can be simplified.
[0023]
Furthermore, the brake-off time may be set to one stage (constant), but if it is set to a plurality of stages and selected according to the rotation cycle of the generator, even if the displacement with respect to the reference cycle is large, the brake is adjusted according to the displacement. Since the time can be controlled, the rotation cycle of the generator can be brought closer to the reference cycle more quickly. For example, when performing the needle alignment operation, when the mainspring is fully wound, when it is partially wound, or when it is almost unwound, the magnitude of the torque applied to the generator differs. The rotation cycle of the generator in the state is also different. In this case, if the brake-off time is selected according to the rotation cycle of the generator, the brake amount can be controlled, and the rotation cycle of the generator can be quickly brought close to the reference cycle.
[0024]
If the brake-off time is set so as to change continuously according to the rotation period, finer adjustment can be performed.
[0035]
Further, each of the rotation control devices cancels the movement variation suppression control by the movement variation suppressing device when the value of the up / down counter becomes equal to or smaller than a third setting value smaller than the first setting value. An apparatus may be provided.
[0036]
If such a first release device is provided, the value of the up / down counter becomes the third set value and it is no longer necessary to perform full brake control, that is, the rotational speed of the generator approaches the reference period. When the normal hand movement state is reached, the hand movement fluctuation suppression control can be canceled to automatically return to the normal hand movement.
[0037]
  Further, the rotation control device has a value of the up / down counter that is the first value.2You may provide the 2nd cancellation | release apparatus which cancels the movement change suppression control by the said movement change suppression apparatus when it becomes more than the 4th set value larger than a setting value.
[0038]
If such a 2nd cancellation | release apparatus is provided, when the up / down counter value will rise to the 4th setting value, without reducing the rotation cycle of a generator, that is, the rotation cycle of a generator will become very quick. In this case, it is possible to quickly return to the reference cycle by releasing the hand movement fluctuation suppression control and permitting full brake control.
[0039]
The rotation control device further includes a third release device that, when a predetermined time has elapsed after the needle alignment, cancels the movement variation suppression control by the movement variation suppression device and prohibits the transition to the subsequent movement variation suppression control. You may have.
[0040]
Even when a predetermined time elapses from the needle alignment operation and the routine shifts to normal hand movement control, the up / down counter value may temporarily become greater than or equal to the second set value due to disturbance or the like. At this time, if the third release device is provided, when the second set value is reached due to such disturbance, it is possible not to shift to the movement change suppression control and normal movement without the influence of the disturbance. Control can continue.
[0041]
The term “after the needle alignment operation” may be immediately after the needle alignment operation, or may be after a certain amount of time, for example, about several minutes to several tens of minutes after the needle alignment operation.
[0043]
  The timepiece control method of the present invention includes:A mechanical energy source; a generator driven by the mechanical energy source to generate induced power to supply electrical energy; and a rotation control driven by the electrical energy to control a rotation cycle of the generator A control method for a timepiece including a device, wherein a reference signal generated based on a signal from a time standard source is compared with a rotation detection signal corresponding to a rotation period of the generator to compare a brake time of the generator And setThe needle alignment operation has been completed and the normal hand movement has been restored.End of needle alignment operationPredetermined time immediately afterThe brake control device applies the brake over one cycle of the reference signal.If it detects a needIs characterized by changing to a hand movement fluctuation suppression control of a preset brake pattern.
[0044]
At this time, it is preferable that the hand movement fluctuation suppression control is one in which the brake control is performed with a brake pattern in which the ratio between the time to apply the brake and the time to turn off the brake is preset.
[0049]
Here, it is preferable that the movement change suppression control is canceled when the rotation period of the generator approaches a reference period.
[0050]
If it does in this way, when the rotation speed of a generator approaches a reference cycle and it will be in a normal hand movement state, it can cancel a hand movement fluctuation suppression control, and can return to normal hand movement automatically.
[0051]
Further, it is preferable to cancel the movement change suppression control when the rotation cycle of the generator is shorter than the reference cycle by a predetermined time.
[0052]
In this way, when the generator rotation period is short and does not approach the reference period, the movement change suppression control can be canceled and full brake control can be performed, so the generator can be quickly returned to the reference period. Can do.
[0053]
Furthermore, it is preferable that when a predetermined time elapses after the needle alignment operation, the movement change suppression control is canceled and the shift to the subsequent movement change suppression control is prohibited.
[0054]
Even when a predetermined time has passed since the needle alignment operation and the routine has shifted to normal hand movement control, the generator must be braked or braked for over one period of the reference signal due to external disturbances, etc. May become temporary. At this time, if a predetermined time has elapsed after the needle alignment operation, it is possible to continue normal hand movement control without the influence of such disturbance if the control is not shifted to hand movement fluctuation suppression control.
[0055]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0056]
FIG. 1 is a block diagram showing an electronically controlled mechanical timepiece according to the first embodiment of the present invention.
[0057]
The electronically controlled mechanical timepiece is connected to the mainspring 1 as a mechanical energy source, the speed increasing wheel train 3 as an energy transmission device for transmitting the torque of the main spring 1 to the generator 2, and the speed increasing wheel train 3 to be connected to the time. And a pointer 4 for displaying.
[0058]
The generator 2 is driven by the mainspring 1 via the speed increasing gear train 3, and generates an induced power to supply electric energy. The AC output from the generator 2 is stepped up and rectified through a rectifier circuit 5 including step-up rectification, full-wave rectification, half-wave rectification, transistor rectification, and the like, and is charged and supplied to a power supply circuit 6 composed of a capacitor and the like.
[0059]
The power supply circuit 6 includes a main power storage unit (main capacitor) 6A and an auxiliary power storage unit (auxiliary capacitor) 6B that temporarily store electrical energy from the generator 2, and a switch RYZ1 that connects them in parallel. . Here, the capacitance of the main power storage unit 6A is, for example, 0.2 μF, and the capacitance of the auxiliary power storage unit 6B is, for example, 10 μF.
[0060]
In the present embodiment, as shown in FIG. 2, a brake circuit 20 including a rectifier circuit 5 is provided in the generator 2. The brake circuit 20 includes a first switch 21 connected to a first AC input terminal MG1 to which an AC signal (AC current) generated by the generator 2 is input, and a second switch to which the AC signal is input. And the second switch 22 connected to the AC input terminal MG2, and by simultaneously turning on these switches 21, 22, the first and second AC input terminals MG1, MG2 are short-circuited to form a closed loop state. And a short brake is applied.
[0061]
The first switch 21 includes a Pch first field effect transistor (FET) 26 whose gate is connected to the second AC input terminal MG2, and a chopper signal (chopper pulse) from a chopper signal generator 80 described later. A second field effect transistor 27 in which CH5 is input to the gate is connected in parallel.
[0062]
The second switch 22 includes a Pch third field effect transistor (FET) 28 whose gate is connected to the first AC input terminal MG1, and a chopper signal CH5 from the chopper signal generator 80 as a gate. An input fourth field effect transistor 29 is connected in parallel.
[0063]
The voltage doubler rectifier circuit 5 includes a boosting capacitor 23 connected to the generator 2, diodes 24 and 25, and switches 21 and 22. The diodes 24 and 25 may be any unidirectional element that allows a current to flow in one direction, and the type thereof is not limited. In particular, in the electronically controlled mechanical timepiece, since the electromotive voltage of the generator 2 is small, it is preferable to use a Schottky barrier diode or a silicon diode having a small drop voltage Vf and a low reverse leakage current as the diodes 24 and 25. The DC signal rectified by the rectifier circuit 5 is charged in the power supply circuit 6.
[0064]
The power supply circuit 6 accumulates the current from the rectifier circuit 5 in each of the power storage units 6A and 6B connected in parallel, and drives the rotation control device 50 that controls the rotation cycle of the generator 2 with this charged power. ing. The switch RYZ1 is a mechanical switch configured to be disconnected when the generator 2 is stopped by the needle alignment operation and connected when the needle alignment operation is completed and the state returns to the normal hand movement state. For this reason, at the time of needle alignment, auxiliary power storage unit 6B is disconnected from main power storage unit 6A and rotation control device 50, and the electric charge accumulated in auxiliary power storage unit 6B is held as it is. Therefore, when the switch RYZ1 is turned on at the time of return from the needle alignment operation, a current flows from the auxiliary power storage unit 6B to the main power storage unit 6A and the voltage rises quickly, so that the rotation control device 50 can also be driven quickly.
[0065]
The brake circuit 20 is controlled by a rotation control device 50 that is driven by electric power supplied from the power supply circuit 6 described above. As shown in FIG. 1, the rotation control device 50 includes an oscillation circuit 51, a detection circuit 52, and a control circuit 53.
[0066]
The oscillation circuit 51 outputs an oscillation signal (32768 Hz) by using a crystal resonator 51A which is a time standard source, and this oscillation signal is frequency-divided to a certain period by a frequency divider circuit 54 consisting of 15 stages of flip-flops. . The twelfth stage output Q12 of the frequency divider 54 is output as an 8 Hz reference signal fs.
[0067]
The detection circuit 52 includes a waveform shaping circuit 61 and a mono multivibrator 62 connected to the generator 2. The waveform shaping circuit 61 is composed of an amplifier and a comparator, and converts a sine wave into a rectangular wave. The mono multivibrator 62 functions as a bandpass filter that passes only pulses having a certain period or less, and outputs a rotation detection signal FG1 from which noise has been removed.
[0068]
The control circuit 53 includes an up / down counter 60 that is a brake control device, a synchronization circuit 70, and a chopper signal generator 80.
[0069]
The up count input and down count input of the up / down counter 60 are inputted with the rotation detection signal FG1 of the detection circuit 52 and the reference signal fs from the frequency divider circuit 54 via the synchronization circuit 70, respectively.
[0070]
The synchronization circuit 70 includes four flip-flops 71, an AND gate 72, and a NAND gate 73, and uses the signal of the fifth-stage output Q5 (1024 Hz) and the sixth-stage output Q6 (512 Hz) of the frequency divider 54. Thus, the rotation detection signal FG1 is synchronized with the reference signal fs (8 Hz) and adjusted so that these signal pulses are not overlapped and output.
[0071]
The up / down counter 60 includes a 4-bit counter. A signal based on the rotation detection signal FG1 is input from the synchronization circuit 70 to the upcount input of the up / down counter 60, and a signal based on the reference signal fs is input to the downcount input from the synchronization circuit 70. As a result, the reference signal fs and the rotation detection signal FG1 can be counted and the difference between them can be calculated simultaneously.
[0072]
The up / down counter 60 is provided with four data input terminals (preset terminals) A to D. When an H level signal is input to the terminals A to C, the up / down counter 60 is initialized. The value (preset value) is set to the counter value 7.
[0073]
An LOAD input terminal of the up / down counter 60 is connected to an initialization circuit 90 that is connected to the power supply circuit 6 and outputs a system reset signal SR according to the voltage of the power supply circuit 6. In the present embodiment, the initialization circuit 90 is configured to output an H level signal until the charging voltage of the power supply circuit 6 reaches a predetermined voltage, and to output an L level signal when the voltage exceeds the predetermined voltage. Has been.
[0074]
The up / down counter 60 does not accept the up / down input until the LOAD input becomes the L level, that is, until the system reset signal SR is canceled, so the count value of the up / down counter 60 is maintained at “7”. .
[0075]
The up / down counter 60 has 4-bit outputs QA to QD. Accordingly, the output QD of the fourth bit outputs an L level signal if the counter value is 7 or less, and outputs an H level signal if the counter value is 8 or more. This output QD is connected to the chopper signal generator 80.
[0076]
The outputs of the NAND gate 74 and the OR gate 75 to which the outputs QA to QD are input are respectively input to the NAND gate 73 to which the output from the synchronization circuit 70 is input. Therefore, for example, when a plurality of up-count signals are input and the counter value reaches “15”, an L level signal is output from the NAND gate 74, and even if an up-count signal is input to the NAND gate 73, the input Is set so that no more up count signals are input to the up / down counter 60. Similarly, when the counter value becomes “0”, the L-level signal is output from the OR gate 75, so the input of the down-count signal is cancelled. As a result, the counter value is set so as not to exceed “15” to “0” or to exceed “0” to “15”.
[0077]
The chopper signal generator 80 uses an output Q5 to Q8 of the frequency divider 54 to output an AND gate 82 that outputs a first chopper signal CH3, an OR gate 83 that outputs a second chopper signal CH2, and an up-down A brake control signal generation circuit 81 that outputs a chopper signal CH1 serving as a brake control signal using outputs QA to QD of the counter 60, an AND gate 84 to which the chopper signals CH1 and CH2 are input, and an output CH4 of the AND gate 84 And a NOR gate 85 to which the output CH3 is input.
[0078]
The output CH5 from the NOR gate 85 of the chopper signal generator 80 is input to the gates of the Pch transistors 27 and 29. Therefore, while the chopper output CH5 is at the L level, the transistors 27 and 29 are maintained in the ON state, the generator 2 is short-circuited, and the brake is applied.
[0079]
On the other hand, while the output CH5 is at the H level, the transistors 27 and 29 are maintained in the off state, and the generator 2 is not braked. Therefore, the generator 2 can be chopper-controlled by the chopper signal from the output CH5.
[0080]
Here, the duty ratio of each of the chopper signals CH2 and CH3 is the ratio of the time during which the generator 2 is braked during one cycle of the chopper signal. In this embodiment, the duty ratio of each chopper signal CH2 and CH3 is This is the ratio of the time that is at the H level during one cycle.
[0081]
As shown in FIG. 3, the brake control signal generation circuit 81 includes a hand movement fluctuation suppressing device 200, a first release device 300, a second release device 400, and a third release device 500.
[0082]
When the up / down counter 60 is set to apply a strong brake over one cycle or more of the reference signal fs after the needle alignment operation, the hand movement fluctuation suppressing device 200 always applies a weak brake within one cycle. Change to the hand movement fluctuation suppression control including
[0083]
The hand movement fluctuation suppressing device 200 includes an AND gate 201 that outputs a counter signal CN1 using the outputs QA to QD of the up / down counter 60, a first flip-flop circuit 202 that receives the counter signal CN1 as a clock input, The AND gate 204 to which the output of the first flip-flop circuit 202 and the output of the second flip-flop circuit 304 to be described later are input and the outputs Q11 and Q12 of the frequency divider circuit 54 are used in one cycle of the reference signal fs. A NAND gate 205 for setting the ratio of the weak brake time, and a selection gate unit 206 to which the output SP1 of the NAND gate 205, the output of the AND gate 204, and the signal CN10 from the output QD are input. The AND gate 201 is configured to output an H level counter signal CN1 when the count value of the up / down counter 60 becomes “9”, which is the second set value.
[0084]
Here, as shown in FIG. 4, from the NAND gate 205, the duty ratio is 3: 1, that is, between the H level signal and the L level signal, depending on the outputs Q11 (16 Hz) and Q12 (8 Hz) of the frequency dividing circuit 54. An 8 Hz signal SP1 with a ratio of 3: 1 is output.
[0085]
The selection gate 206 receives the AND gate 207 to which the output of the AND gate 204 and the output SP1 of the NAND gate 205 are input, the inverted signal of the output of the AND gate 204, and the signal CN10 from the output QD of the up / down counter 60. AND gate 208 and OR gate 209 to which the outputs of AND gate 207 and AND gate 208 are input. The output CH1 of the OR gate 209 is input to the AND gate 84 of the chopper signal generator 80.
[0086]
The first canceling device 300 outputs the counter signal CN5 using the outputs QA to QD of the up / down counter 60, and receives the counter signal CN5 of the AND gate 301 and the output of the first flip-flop 202. An AND gate 302, an OR gate 303 to which an output of the AND gate 302 is input, and a second flip-flop 304 to which an output of the OR gate 303 is a clock input are provided. The AND gate 301 is configured to output an H level counter signal CN5 when the count value of the up / down counter 60 reaches the third set value “7”.
[0087]
The second release device 400 includes an AND gate 401 that outputs a counter signal CN8 using outputs QA to QD of the up / down counter 60, an OR gate 303 to which the counter signal CN8 of the AND gate 401 is input, and an OR gate 303. Is provided with a second flip-flop 304 whose output is a clock input. The AND gate 401 is configured to output an H level counter signal CN8 when the count value of the up / down counter 60 reaches the fourth set value “10”.
[0088]
The third canceling device 500 receives the output Q15 (1 Hz) of the frequency dividing circuit 54 as a clock, and receives the timer counter 501 that outputs the counter signal CN9 of H level after 10 seconds and the counter signal CN9 of the timer counter 501. OR gate 303 and a second flip-flop 304 having the output of the OR gate 303 as a clock input.
[0089]
Here, the flip-flops 202 and 304 and the timer counter 501 are reset by a system reset signal SR that is output every time the hands are aligned.
[0090]
The selection gate unit 206 selects the output SP1 as the output CH1 when the hand movement fluctuation suppressing device 200 is operated (when an H level signal is input from the AND gate 204), and suppresses the hand movement fluctuation. Before the operation of the device 200 or when the operation of the hand movement variation suppressing device 200 is released by each of the release devices 300, 400, 500 (when an L level signal is input from the AND gate 204), the output QD Is selected to output CH1.
[0091]
In the present invention, the strong brake and the weak brake are relative, and the strong brake means that the braking force is stronger than the weak brake. The specific braking force in each brake, that is, the duty ratio and frequency of the chopper brake signal may be set as appropriate in implementation.
[0092]
Next, the operation in the present embodiment will be described with reference to the timing charts of FIGS. 4 and 5 and the flowchart of FIG.
[0093]
When the crown is pushed after the needle alignment, the switch RYZ1 is connected (turned on). Thereafter, the generator 2 starts to operate, and an L-level system reset signal SR is input from the initialization circuit 90 to the LOAD input of the up / down counter 60. Then, as shown in FIG. 4, the up-count signal based on the rotation detection signal FG1 and the down-count signal based on the reference signal fs are counted by the up / down counter 60 (step 1, hereinafter, step is abbreviated as “S”). ). These signals are set so as not to be simultaneously input to the counter 60 by the synchronization circuit 70.
[0094]
The system reset signal SR is also input to the flip-flops 202 and 304 and the timer counter 501, and the flip-flops 202 and 304 and the timer counter 501 are initialized. The timer counter 501 measures the elapsed time after initialization using the output Q15 (1 Hz) of the frequency dividing circuit 54 as a clock input.
[0095]
Then, based on the output Q of the timer counter 501, it is determined whether or not 10 seconds have elapsed since the rotation control device 50 such as the frequency divider 54 started to operate (S2).
[0096]
Here, when 10 seconds have not elapsed, the brake control signal generation circuit 81 operates as follows.
[0097]
First, it is determined whether the counter value of the up / down counter 60 is “9” (S3), “10” (S5), and “7” (S7). The counter value of the up / down counter 60 is set to “7” in the initial state. When the up count signal is input, the counter value increases to “8” and “9”, and when the down count signal is input. “6” and “5” become smaller.
[0098]
When the counter value is “9”, the hand movement variation suppressing device 200 is operated, and the output SP1 is output as the output CH1 (S4). That is, when the counter value becomes “9”, an H level signal is output from the AND gate 201, and the output Q of the flip-flop 202 changes to an H level signal. At this time, since the signals CN5, CN8, and CN9 of the AND gates 301 and 401 and the timer counter 501 remain L level signals, the L level signal is clocked into the flip-flop 304 from the OR gate 303, and the flip-flop 304 The H level signal remains output from the inverted output. As a result, the signal output from the AND gate 204 becomes H level, and the signal SP1 is output as the brake control signal CH1 (S4). The signal SP1 continues to be output unless released by the release devices 300, 400, 500, and brake control is performed by the signal SP1 (S11).
[0099]
If the counter value is not “9”, it is determined whether it is “10” (S5). When the counter value is “10”, the second release device 400 is activated and the movement change suppression control is released (S6). That is, since the output CN8 from the AND gate 401 becomes an H level and the output from the flip-flop 304 becomes an L level signal, the selection gate unit 206 cancels the signal SP1 and cancels the movement change suppression control (S6), The brake control is performed by outputting the signal CN10 from the output QD as the brake control signal CH1 (S11). When the counter value is “10”, the signal CN10 is an H level signal, so that the strong brake control is performed as described later.
[0100]
If the counter value is “9” but not “10”, it is determined whether or not it is “7” (S7). When the counter value is “7” and the hand movement variation suppressing device 200 is operating (S8), the first canceling device 300 is operated and the hand movement variation suppressing control is canceled (S9). That is, since the output CN5 from the AND gate 301 becomes the H level and the output from the flip-flop 304 becomes the L level signal, the selection gate unit 206 cancels the signal SP1 and cancels the hand movement fluctuation suppression control (S9), The brake control is performed by outputting the signal CN10 from the output QD as the brake control signal CH1 (S11). When the counter value is “7”, the signal CN10 is an L level signal, so that the weak brake control is performed as described later.
[0101]
Furthermore, if the counter value is not “9”, “10”, or “7”, or if the counter value fluctuation control device 200 is not operating even if it is “7”, the current control is maintained as it is. Is done. That is, if the hand movement variation suppressing device 200 is operating, the signal SP1 is output as the brake control signal CH1, and if the hand movement variation suppressing device 200 is not operating, the signal CN10 is output as the brake control signal CH1.
[0102]
On the other hand, when 10 seconds have elapsed after the needle alignment operation (S2), the third release device 500 is activated to release the hand movement fluctuation suppression control (S10). That is, since the output signal CN9 of the timer counter 501 becomes the H level signal and the output from the flip-flop 304 becomes the L level signal, the selection gate unit 206 cancels the signal SP1 and cancels the hand movement fluctuation suppression control (S10). Then, the signal CN10 from the output QD is output as the brake control signal CH1 to perform the brake control (S11).
[0103]
In addition, after 10 seconds have elapsed, even if the counter value reaches “9”, the movement change suppression control is not activated.
[0104]
In the brake circuit 20, brake control is performed by a brake control signal CH1 (S11).
[0105]
Specifically, when an L level signal is output from the brake control signal CH1, the output CH4 is also an L level signal. Therefore, the output CH5 from the NOR gate 85 is a chopper signal obtained by inverting the output CH3, that is, the H level period (brake off period) is as long as 15/16 and the L level period (brake on period) is as short as 1/16. That is, it becomes a (1/16) chopper signal with a small duty ratio (ratio at which the switches 21 and 22 are turned on) for performing the weak brake control. Therefore, the weak brake control giving priority to the generated power is performed on the generator 2.
[0106]
On the other hand, when the H level signal is outputted from the brake control signal CH1, the chopper signal CH2 is outputted as it is from the AND gate 84, and the output CH4 becomes the same as the chopper signal CH2. Therefore, the output CH5 from the NOR gate 85 is a chopper signal obtained by inverting the output CH2, that is, the H level period (brake off period) is as short as 1/16 and the L level period (brake on period) is as short as 15/16. That is, it becomes a (15/16) chopper signal having a large duty ratio for performing the strong brake control. Therefore, the chopper signal CH5 becomes an H level signal at a constant period although the total time of the L level signal for applying the short brake to the generator 2 becomes longer and strong braking control is performed for the generator 2. Since the short brake is turned off, choppering control is performed, and the braking torque can be improved while suppressing the decrease in the generated power.
[0107]
Therefore, as shown in FIG. 4, when the hand movement fluctuation suppressing device 200 is not operating, the strong brake control is performed when the counter value of the up / down counter 60 is "8" or more, that is, when the output QD becomes an H level signal. , "7" or less, that is, when the output QD becomes an L level signal, the weak brake control is performed. Then, by repeating such brake control, when the generator 2 is close to the set rotation speed, the up counter signal and the down counter signal are alternately input, and the counter values are “8” and “7”. ”And the lock state is repeated. Also at this time, the strong brake control and the weak brake control are repeated according to the counter value and the rotation cycle.
[0108]
On the other hand, if the hand movement fluctuation suppressing device 200 is operating, the signal SP1 becomes the brake control signal CH1. Therefore, even if the counter value is “8” or more, that is, the output QD is an H level signal. Even in the state of continuing to perform the hand movement fluctuation control, the weak brake control is performed at regular intervals.
[0109]
When the watch 1 is used for a long period of time, the mainspring 1 is unwound and its torque is reduced. When a large number of down counter values are input and the counter value becomes a small value of “6” or less, It may be determined that the torque has decreased, and the user may be prompted to wind up the mainspring 1 again by stopping the hand movement, making the speed very low, or sounding a buzzer, a lamp, or the like.
[0110]
According to this embodiment, there are the following effects.
[0111]
(1) When the hand movement fluctuation suppressing device 200 is provided in the brake control signal generation circuit 81 of the rotation control device 50 and the counter value becomes “9” after the needle alignment operation, and the rotation cycle of the generator 2 becomes faster, That is, even when it is necessary to apply a strong brake over one cycle or more, a time during which a weak brake is always applied within one cycle is ensured. Therefore, it is possible to eliminate the control that keeps applying a strong brake. For this reason, there is no sudden change in the needle movement, and the wobbling of the needle can be reduced.
[0112]
Although the time until the needle instruction error is eliminated is longer than in the prior art, there is still no problem in practical use because the error can be eliminated between several seconds to several tens of seconds. Further, since the movement change suppression control is performed only when the counter value becomes “9”, the normal movement control can be performed in other cases, and the time until the error is eliminated can be shortened. it can.
[0113]
(2) Since the ratio of the time during which the weak brake is applied in one cycle of the generator 2 during the hand movement fluctuation suppression control is preset by the signal SP1 output using the outputs Q11 and Q12 of the frequency divider circuit 54, Compared with the case where the weak brake time is calculated from the actual rotation cycle of the generator 2, the configuration of the hand movement fluctuation suppressing device 200 can be simplified.
[0114]
(3) The first canceling device 300 that cancels the hand movement variation suppression control by the hand movement variation suppressing device 200 when the counter value of the up / down counter 60 becomes “7” smaller than “8”. Since the counter value of the up / down counter 60 becomes “7”, it is not necessary to perform the strong brake control, that is, the rotational speed of the generator 2 approaches the reference cycle and the normal hand movement state is achieved. In such a case, it is possible to cancel the movement change suppression control and automatically return to the normal movement. For this reason, although it is not necessary to apply the strong brake, it is possible to perform the control with high accuracy without applying the strong brake by the movement change suppression control.
[0115]
(4) Since the rotation control device 50 includes the second release device 400 that releases the hand movement fluctuation suppression control when the counter value of the up / down counter 60 becomes “10” larger than “8”, When the up / down counter value increases to “10” without decreasing the rotation cycle of the machine 2, that is, when the rotation cycle of the generator 2 becomes very fast, By permitting full brake control to continue strong brake control, it is possible to quickly return to the reference cycle.
[0116]
(5) Since the rotation control device 50 is provided with the third release device 500 for releasing the movement change suppression control when a predetermined time has elapsed after the needle alignment, the normal movement control after the predetermined time has elapsed since the needle alignment operation. In some cases, the up / down counter value may temporarily become “9” or more due to disturbance or the like. At this time, by providing the third canceling device 500, when the counter value becomes “9” due to such disturbance, it is possible to prevent the shift to the hand movement fluctuation suppression control, and normality that eliminates the influence of the disturbance. Smooth hand movement control can be continued.
[0117]
(6) Since control is performed using a chopper signal with a large duty ratio during strong brake control, the braking torque can be increased while suppressing a decrease in charging voltage, while maintaining system stability and efficient operation. Brake control can be performed. Thereby, the duration of the electronically controlled mechanical timepiece can also be increased.
[0118]
(7) Furthermore, since the chopper is controlled by the chopper signal having a small duty ratio even during the weak brake control, the charging voltage while the weak brake is applied can be further improved.
[0119]
(8) During normal control, switching between strong brake control and weak brake control is set only by whether the counter value is “7” or less or “8” or more, so the rotation control device 50 is simplified. It is possible to reduce the cost of parts and manufacturing, and to provide an electronically controlled mechanical watch at a low cost.
[0120]
(9) Since the timing at which the up counter signal is input changes according to the rotational speed of the generator 2, the period during which the counter value is “8”, that is, the time during which the brake is applied, can be automatically adjusted. it can. For this reason, particularly in the locked state where the up-counter signal and the down-count signal are alternately input, stable control with a quick response can be performed.
[0121]
(10) Since the up / down counter 60 is used as the brake control device, the count values can be compared simultaneously with the count of the rotation detection signal FG1 and the reference signal fs. The difference in numerical values can be easily obtained.
[0122]
(11) Since the 4-bit up / down counter 60 is used, 16 count values can be counted. For this reason, when the up counter signal is continuously input, the input value can be accumulated and counted, and the set range, that is, the up counter signal and the down counter signal are continuously input and the counter value is counted. In the range up to “15” or “0”, the accumulated error can be corrected. For this reason, even if the rotational speed of the generator 2 deviates significantly from the reference speed, it takes time until the locked state is reached. However, the accumulated error is reliably corrected and the rotational speed of the generator 2 is returned to the reference speed. In the long term, accurate hand movement can be maintained.
[0123]
(12) The initialization circuit 90 is provided so that the brake control is not performed until the power supply circuit 6 at the time of starting the generator 2 is charged to a predetermined voltage so that the generator 2 is not braked. Therefore, priority can be given to the charging of the power supply circuit 6, the rotation control device 50 driven by the power supply circuit 6 can be driven quickly and stably, and the stability of the subsequent rotation control can be improved. it can.
[0124]
(13) Since the brake control signal generation circuit 81 is formed using various logic circuits, the circuit can be reduced in size and power can be saved.
[0125]
Next, a second embodiment of the present invention will be described with reference to FIG. In the present embodiment, the same or similar components as those in the first embodiment are denoted by the same reference numerals, and description thereof is omitted or simplified.
[0126]
In the second embodiment, when the hand movement fluctuation suppressing device 200 of the first embodiment is operated, the signal output as the brake control signal CH1 is only the output signal SP1 of the NAND gate 205. A plurality of ratios between the time and the weak brake time are set, and can be selected according to the rotation cycle of the generator 2, and the selected signal can be output as a brake control signal. Note that. Other configurations are the same as those in the first embodiment.
[0127]
Specifically, the brake control signal generation circuit 81 is provided with a rotation cycle detection circuit 600 that detects the rotation cycle of the generator 2 and a hand movement control signal selection circuit 700.
[0128]
The rotation period detection circuit 600 includes a seven-stage frequency dividing circuit 601 in which the output Q6 (512 Hz) of the frequency dividing circuit 54 is a clock input and the output FG2 of the AND gate 72 is a clear input, and each of the frequency dividing circuit 601. An AND gate 602 to which the outputs F2 to F6 are input, an AND gate 604 to which the output of the AND gate 602 and the output F1 are input, an OR gate 605 to which the outputs F3 to F7 are input, an output of the OR gate 605, and NOR gates 606 and 607 to which the outputs F1 and F2 are input, and an OR gate 609 to which the outputs of the AND gate 604 and the NOR gate 606 are input. The output FG2 is a pulse signal that is output almost once in synchronization with the rising signal of the rotation detection signal FG1, that is, once in one cycle of the rotation detection signal FG1.
[0129]
Further, in the rotation period detection circuit 600, the output of the NOR gate 607 is a clock input, the output FG2 is a clear input, the output Q of the flip-flop 610, and the output of the OR gate 609 are data. Flip-flops 612 and 613 to which the rotation detection signal FG1 is input as a clock and NOR gates 615 to which the outputs SP3 and SP4 of the flip-flops 612 and 613 are input.
[0130]
The rotation period detection circuit 600 configured as described above can detect the rotation period of the rotation detection signal FG1, and can output the detected rotation period at the outputs SP2 to SP4 of the flip-flops 612 and 613 and the NOR gate 615. .
[0131]
The hand movement control signal selection circuit 700 is included in the hand movement fluctuation suppressing device 200, and each of the NAND gate 205 and the AND gate 211 to which the outputs Q11 and Q12 of the frequency dividing circuit 54 are input, and the outputs SP2 and NAND of the NOR gate 615. The AND gate 212 to which the output of the gate 205 is input, the AND gate 213 to which the output SP3 of the flip-flop 612 and the output Q12 of the frequency divider 54 are input, the output SP4 of the flip-flop 613 and the output of the AND gate 211 are input. AND gate 214 and an OR gate 215 to which the output of each AND gate 212, 213, 214 is input.
[0132]
By doing so, it is possible to select the ratio of the strong brake time and the weak brake time in one cycle according to the rotation cycle of the generator 2 when the hand movement fluctuation suppression control is activated. The selected signal SP11 is output to the brake control signal CH1.
[0133]
Specifically, in the present embodiment, when the rotation cycle of the generator 2 is less than 123 ms (when it is faster than the reference signal cycle), SP2 becomes an H level signal, so that the output SP11 (brake control signal CH1) In this case, the output of the NAND gate 205 is output as it is, and thereby the brake control is performed in which the ratio of the strong brake control in one cycle is 75% (the ratio of the weak brake control is 25%).
[0134]
Further, when the rotation cycle of the generator 2 is 123 to 127 ms (substantially the same as the reference signal cycle), SP3 becomes an H level signal, so that the signal of the output Q12 is output as it is to the output SP11 (brake control signal CH1). Thus, the brake control is performed in which the ratio of the strong brake control in one cycle is 50% (the ratio of the weak brake control is 50%).
[0135]
Furthermore, when the rotation cycle of the generator 2 is 127 ms or more (when it is slower than the reference signal cycle), SP4 becomes an H level signal, so that the output of the AND gate 211 remains as it is at the output SP11 (brake control signal CH1). As a result, the brake control in which the ratio of the strong brake control in one cycle is 25% (the ratio of the weak brake control is 75%) is performed.
[0136]
In this embodiment as well, the same effects as (1) to (13) of the first embodiment can be obtained, and (14) the time for applying the weak brake is set in three stages, and the generator is set. Since the selection is made according to the rotation cycle of 2, the rotation cycle of the generator 2 can be brought closer to the reference cycle more quickly. In addition, since it is set in advance as 75%, 50%, and 25% with respect to one reference period, the hand movement fluctuation suppressing device 200 is compared with the case where the weak brake time is calculated from the actual rotation period of the generator 2. The configuration can be simplified. If the brake-off time is set so as to change continuously according to the rotation period, finer adjustment can be performed.
[0137]
It should be noted that the present invention is not limited to each embodiment, and modifications, improvements, etc. within a scope that can achieve the object of the present invention are included in the present invention.
[0138]
For example, the duty ratio of the chopper signal in the chopper signal generator 80 is not limited to 1/16 or 15/16 as in the above-described embodiment, and may be other values such as 14/16, for example. Furthermore, the duty ratio of the chopper signal may be 28/32, 31/32, etc., and the change of the duty ratio may be 32 stages instead of 16 stages. At this time, as a chopper signal used at the time of strong brake control, the duty ratio is preferably in the range of about 0.75 to 0.97, and if it is in the range of about 0.75 to 0.89, The charging voltage can be further improved. If the charging voltage is set to a high range of 0.90 to 0.97, the braking force can be further increased.
[0139]
Moreover, in each embodiment, the chopper signal used at the time of weak brake control should just be made into the low range whose duty ratio is about 1/16-1/32. In short, the duty ratio and frequency of each chopper signal may be set as appropriate during implementation. In this case, for example, if the frequency is set to a high frequency range of 500 to 1100 Hz, the charging voltage can be further improved. On the other hand, if the frequency is in the low range of 25 to 50 Hz, the braking force can be further increased. For this reason, by changing the frequency of each chopper signal as well as the duty ratio, the charging voltage and the braking force can be further increased.
[0140]
Further, the release devices may not include all of the first to third release devices 300, 400, and 500. For example, normally, if about 10 seconds elapse after the needle alignment operation, the rotation cycle of the generator 2 is converged to the extent that it is synchronized with the reference cycle, so the third release device 500 may be omitted. Even when the second release device 400 is not provided, when the rotation cycle of the generator 2 is shortened, the return to the reference cycle is delayed. However, since these errors can be corrected by the rotation control device 50, it is practically used. No problem. Further, if there is the third release device 500, the first release device 300 may not be provided. In short, the three release devices are not necessarily required, and may be appropriately selected for implementation.
[0141]
Further, if the movement change suppressing device 200 itself is provided with a mechanism for stopping the operation within a predetermined time after the operation, each release device may not be provided.
[0142]
Further, the counter value at which the hand movement fluctuation suppression control operates is not limited to “9”, but may be “10” or “11”, for example, and this value may be set as appropriate in implementation.
[0143]
Furthermore, the counter value at which the release devices 300 and 400 operate is not limited to “7” and “10”, but may be “6” or “9”, for example, and this value may be set as appropriate in implementation.
[0144]
In the second embodiment, three types of brake control signals having different ratios of the strong brake time and the weak brake time are used for hand movement fluctuation suppression control. However, two types of brake control signals may be used. Four or more types of brake control signals may be used.
[0145]
Moreover, in the said embodiment, although the braking force of the generator 2 was controlled using the chopper signal, you may control a brake without using a chopper signal. For example, as shown in FIG. 8, the brake control signal CH1 from the brake control signal generation circuit 81 is inverted through the inverter 86 to be the brake signal CH51, so that the brake is applied when the brake control signal CH1 is at the H level. If the brake is continuously applied and is at the L level, the brake may be turned off to perform brake control. Note that the same or similar components as those in FIG. 2 are denoted by the same reference numerals, and description thereof is omitted or simplified.
[0146]
Further, in each of the above embodiments, the strong brake control and the weak brake control are performed using two types of chopper signals. However, as shown in FIG. 9, the AND gate 82 is eliminated and the output CH4 is inverted through the inverter 86. Thus, the brake signal CH52 may be used to adjust the speed by the strong brake control using the chopper signal and the brake off control for completely turning off the brake. Note that the same or similar components as those in FIG. 2 are denoted by the same reference numerals, and description thereof is omitted or simplified.
[0147]
Further, although the 4-bit up / down counter 60 is used as the brake control device, an up / down counter of 3 bits or less may be used, or an up / down counter of 5 bits or more may be used. If an up / down counter having a large number of bits is used, the number of values that can be counted increases, so the range in which the accumulated error can be stored can be increased, and control in an unlocked state such as immediately after the generator 2 is started is particularly advantageous. On the other hand, if a counter with a small number of bits is used, the range in which the accumulated error can be stored becomes small. However, when the lock state is entered, the up and down operations are repeated, so even a 1-bit counter can cope with the cost. There is an advantage that can be reduced.
[0148]
Further, the brake control device is not limited to the up / down counter, and the first and second counting means provided for the reference signal fs and the rotation detection signal FG1, respectively, and a comparison circuit that compares the count values of the respective counting means. It may be composed of However, the use of the up / down counter 60 has an advantage that the circuit configuration is simplified.
[0149]
Further, the brake control device may be a device that detects a power generation voltage, a rotation cycle (speed), etc. of the generator 2 and controls the brake based on the detected value. Good.
[0150]
Further, as shown in FIG. 10, as the movement change suppressing device 200, the one configured by the NAND gate 205 and the selection gate unit 206 without the AND gates 201 and 204 and the first flip-flop circuit 202 is used. May be. In the hand movement variation suppressing device 200, when the system reset signal SR is input after the hand alignment operation, the operation immediately shifts to the hand movement suppressing control and the output SP1 is output as the output CH1. Then, the movement change suppression control is continued until each release device 300, 400, 500 releases the release. After the needle alignment, the rotational speed of the generator 20 is usually high, and since the release devices 300, 400, 500 are provided, it is appropriate even if the control is shifted to the needle movement fluctuation suppression control immediately after the needle alignment. Brake control can be performed.
[0151]
Further, the specific configuration of the rectifier circuit 5, the brake circuit 20, the control circuit 53, the chopper signal generator 80, etc. is not limited to the above-described embodiments, and the brake control of the generator 2 of the electronically controlled mechanical timepiece is controlled by chopper control or the like. Anything is possible. In particular, the rectifier circuit 5 is not limited to the configuration of the above-described embodiment using chopper boosting, and may be configured to include, for example, a booster circuit that boosts voltage by switching a connection of a plurality of capacitors. What is necessary is just to set suitably according to the kind etc. of the electronically controlled mechanical timepiece which incorporates the machine 2 and a rectifier circuit.
[0152]
Moreover, as a switch which makes the both ends of the generator 2 a closed loop, it is not restricted to the switches 21 and 22 of the said embodiment. For example, when a resistance element is connected to a transistor and each transistor is turned on by a chopper signal to make both ends of the generator 2 a closed loop, the resistance element may be arranged in the path. In short, any switch may be used as long as both ends of the generator 2 can be closed loop.
[0153]
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, portable telephones, pagers, and all steps. It can be applied to a meter, a calculator, a portable personal computer, an electronic notebook, a portable radio, a music box, a metronome, an electric razor, and the like.
[0154]
Further, the mechanical energy source is not limited to the spring, but may be rubber, a spring, a weight, or the like, and may be set as appropriate according to the object to which the present invention is applied.
[0155]
Furthermore, the energy transmission device that transmits mechanical energy from a mechanical energy source such as a spring to the generator is not limited to the train wheel (gear) as in each of the above embodiments, but includes a friction wheel, a belt, a pulley, and a chain. Further, it may be one using a sprocket wheel, a rack and pinion, a cam, or the like, and may be appropriately set according to the type of timepiece to which the present invention is applied.
[0156]
【The invention's effect】
As described above, according to the timepiece and the control method thereof of the present invention, there is an effect that it is possible to eliminate the rapid change of the hand movement after the hand alignment operation and to eliminate the fluctuation of the hand movement.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a configuration of a main part of an electronically controlled mechanical timepiece according to a first embodiment of the present invention.
FIG. 2 is a circuit diagram showing a configuration of an electronically controlled mechanical timepiece according to the first embodiment.
FIG. 3 is a circuit diagram showing a configuration of a brake control signal generation circuit of the first embodiment.
FIG. 4 is a timing chart in the up / down counter and the chopper signal generator of the first embodiment.
FIG. 5 is a timing chart in the chopper signal generator of the first embodiment.
FIG. 6 is a flowchart illustrating the operation of the first embodiment.
FIG. 7 is a circuit diagram showing a configuration of a brake control signal generation circuit of a second embodiment.
FIG. 8 is a circuit diagram showing a configuration of a modified example of the present invention.
FIG. 9 is a circuit diagram showing a configuration of another modified example of the present invention.
FIG. 10 is a circuit diagram showing a configuration of another modified example of the present invention.
[Explanation of symbols]
1 Spring
2 Generator
3 Speed-up wheel train
4 Guidelines
5x voltage rectifier circuit
6 Power supply circuit
6A Main power storage unit
6B Auxiliary power storage unit
20 Brake circuit
50 Rotation control device
51 Oscillator circuit
51A crystal unit
52 Detection circuit
53 Control circuit
54 divider circuit
60 Up / down counter as a brake control device
80 Chopper signal generator
81 Brake control signal generation circuit
90 Initialization circuit
200 Hand movement fluctuation suppression device
206 Selection gate
300 First release device
400 Second release device
500 Third release device
501 Timer counter
600 Rotation cycle detection circuit
700 Hand movement control signal selection circuit
CH1 Brake control signal
fs reference signal
FG1 rotation detection signal

Claims (9)

A mechanical energy source; a generator driven by the mechanical energy source to generate induced power to supply electrical energy; and a rotation control driven by the electrical energy to control a rotation cycle of the generator A watch comprising a device,
The rotation control device compares a reference signal generated based on a signal from a time standard source and a rotation detection signal corresponding to the rotation cycle of the generator to set a brake time of the generator. When,
When the brake control device detects that it is necessary to apply the brake for one period or more of the reference signal for a predetermined time immediately after the end of the needle alignment operation and return to the normal hand movement state, it is set in advance. A hand movement variation suppressing device for changing to a movement variation suppressing control of the brake pattern,
A watch comprising: The timepiece according to claim 1 ,
The brake control device includes an up / down counter in which one of the rotation detection signal and the reference signal is input as an up count signal and the other is input as a down count signal, and the value of the up / down counter is equal to or greater than a first set value. In this case, the generator is braked, and the brake of the generator is released when it is less than a first set value,
The timepiece fluctuation suppressing device is operated when the value of the up / down counter becomes equal to or larger than a second set value larger than the first set value. The timepiece described in any one of claims 1-2,
A timepiece in which the brake pattern has a preset ratio between the time to apply the brake and the time to turn off the brake. The timepiece according to claim 3 ,
A time ratio in which the brake is turned off is set in a plurality of stages, and the hand movement fluctuation suppressing device selects a ratio of the brake off time in accordance with a rotation cycle of the generator. The timepiece according to claim 2 ,
The rotation control device includes a first canceling device that cancels the hand movement variation suppression control by the hand movement variation suppressing device when the value of the up / down counter becomes equal to or smaller than a third set value smaller than the first set value. A watch characterized by that. The timepiece according to claim 2 ,
The rotation control device includes a second canceling device that cancels the hand movement variation suppression control by the hand movement variation suppressing device when the value of the up / down counter becomes equal to or larger than a fourth set value larger than the second set value. A watch characterized by that. The timepiece according to any one of claims 1 to 6 ,
The rotation control device, when a predetermined time has elapsed immediately after the hand setting operation ends, releases the hand movement variation suppressing control by the hand movement fluctuation suppressing device, and a third release prohibiting the transition to a subsequent pointer movement fluctuation suppression control A timepiece comprising a device. A mechanical energy source; a generator driven by the mechanical energy source to generate induced power to supply electrical energy; and a rotation control driven by the electrical energy to control a rotation cycle of the generator A timepiece control method comprising:
While comparing the reference signal generated based on the signal from the time standard source and the rotation detection signal corresponding to the rotation period of the generator to set the brake time of the generator,
When the brake control device detects that it is necessary to apply the brake for one period or more of the reference signal for a predetermined time immediately after the end of the needle alignment operation and return to the normal hand movement state, it is set in advance. A control method for a timepiece, wherein the control is changed to hand movement fluctuation suppression control of a brake pattern. The timepiece control method according to claim 8 ,
The timepiece movement fluctuation suppression control is a timepiece control method characterized in that the brake control is performed with a brake pattern in which a ratio between a time for applying the brake and a time for turning off the brake is set in advance.

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