JPS5866089A - Electronic time piece - Google Patents

Electronic time piece

Info

Publication number
JPS5866089A
JPS5866089A JP16442181A JP16442181A JPS5866089A JP S5866089 A JPS5866089 A JP S5866089A JP 16442181 A JP16442181 A JP 16442181A JP 16442181 A JP16442181 A JP 16442181A JP S5866089 A JPS5866089 A JP S5866089A
Authority
JP
Japan
Prior art keywords
drive pulse
normal drive
circuit
motor
generated
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP16442181A
Other languages
Japanese (ja)
Inventor
Isato Watanabe
渡辺　功人
Kazunaga Takahashi
高橋　司長
Yoshihito Owa
大輪　義仁
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Seikosha KK
Original Assignee
Seikosha KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Seikosha KK filed Critical Seikosha KK
Priority to JP16442181A priority Critical patent/JPS5866089A/en
Publication of JPS5866089A publication Critical patent/JPS5866089A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
    • G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
    • G04C3/14—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means incorporating a stepping motor
    • G04C3/143—Means to reduce power consumption by reducing pulse width or amplitude and related problems, e.g. detection of unwanted or missing step

Abstract

PURPOSE:To overcome the possibility of a judgement that a pulse motor does not rotate despite the rotation of a rotor by returning the normal drive pulses to the minimum width whenever auxiliary drive pulses for driving the pulse motor are generated by a fixed frequency. CONSTITUTION:When it is detected 7 that a pulse motor 6 does not rotate, auxiliary drive pulses are generated from a generation circuit 4 to drive the motor 6 and after that, normal drive pulses with a larger width are generated from the circuit 4. If auxiliary pulses are generated continuously by a fixed frequency because of a judgement that the pulse motor 6 does not rotate despite the fact that it is rotating by the normal drive pulses, outputs are produced from a counter 9 to reset a control circuit 8 whereby the normal drive pulses are returned to the minimum width.

Description

【発明の詳細な説明】 本発明は電子時計に関するものである。[Detailed description of the invention] The present invention relates to an electronic timepiece.

従来モータによる電力消費を低減するものとして、特開
昭５４−７７１６８号公報に記載されたいわゆる適応制
御駆動方式というものがある。これは、通常駆動パルス
によってモータを駆動したときにロータが回転したか否
かを検出し、非回・転の場合には被動駆動パルスを発生
して回転させ、つぎからの通常駆動パルス幅を１段階長
目にするというものである。Conventionally, as a method for reducing power consumption by a motor, there is a so-called adaptive control drive method described in Japanese Patent Application Laid-Open No. 77168/1983. This detects whether the rotor rotates when the motor is driven by a normal drive pulse, and if it does not rotate, generates a driven drive pulse to rotate it, and then adjusts the width of the next normal drive pulse. This means making it one step longer.

これによると、ロータの回転検出は、通常駆動パルスの
印加後のロータの振動により駆動コイルに誘起される電
圧のレベルを検出して行なっている。ところが駆動電圧
および駆動パルス幅が十分ある第１図の斜線範囲内では
回転後の誘起電圧レベルが小さくロータが回転されてい
るにも拘らず非回転と判定されてしまうことが確認され
た。そのためこの範囲内に入ってしまうと補助駆動パル
スが常に発生してしまい、無駄な電力が消費されるとと
もに表示時刻に誤差が生じてしまう。According to this, rotation of the rotor is normally detected by detecting the level of voltage induced in the drive coil by vibration of the rotor after application of a drive pulse. However, it has been confirmed that within the shaded range in FIG. 1 where the drive voltage and drive pulse width are sufficient, the induced voltage level after rotation is small and the rotor is determined to be non-rotating even though it is rotating. Therefore, if it falls within this range, auxiliary drive pulses will always be generated, resulting in wasted power consumption and an error in the displayed time.

そこで本発明は通常駆動パルスによってモータが回転さ
れなかった場合には被動駆動パルスを発生してモータを
回転させその後の通常駆動パルスの幅を長くして駆動を
行ない補助駆動パルスが連続して所定回数発生したとき
通常駆動パルスを最小幅に復帰するようにしたものであ
る。Therefore, in the present invention, when the motor is not rotated by the normal drive pulse, a driven drive pulse is generated to rotate the motor, and the width of the subsequent normal drive pulse is lengthened to drive the motor, and the auxiliary drive pulse is continuously applied to a predetermined level. The normal drive pulse is set to return to the minimum width when the pulse is generated a number of times.

以下本発明の一実施例を図面に基づいて説明する。第２
図において、１は水晶発振器、２は分周器、３は通常駆
動パルスの発生回路で、例えば、５段階の幅のパルスを
発生しうるちのである。４は補助駆動パルスの発生回路
である。５はモータ互の駆動回路、７はモータＡが回転
したが否かを検出する検出回路、８は通常駆動パルスの
幅を選択する第１の制御回路である。９はカウンタ、１
０は再トリガ可能なタイマ回路、１１はアリツブフロッ
プ回路、１２〜１４はゲート回路、１５は電池寿命の報
知装置である。１６は遅延回路である以上の構成におい
て、初期状態では制御回路８の出力によって最小幅の通
常駆動パルスが選択されているものとし、これが発生回
路３から１秒ごとに発生して駆動回路５に供給されモー
タ互が駆動される。モータＡが回転したか否かが検出回
路７で検出され、回転した場合には検出パルスが発生せ
ず通常駆動パルスの幅は上記のまま保持される。　　　
　　゛ そして上記通常駆動パルスでモータ互が回転されなかっ
た場合には検出回路７から検出パルスが生じ発生回路４
から神助駆動パルスが発生する。An embodiment of the present invention will be described below based on the drawings. Second
In the figure, 1 is a crystal oscillator, 2 is a frequency divider, and 3 is a normal drive pulse generation circuit, which can generate pulses with widths of five steps, for example. 4 is an auxiliary drive pulse generation circuit. Reference numeral 5 indicates a drive circuit for the motors, 7 a detection circuit for detecting whether or not the motor A rotates, and 8 a first control circuit for selecting the width of the normal drive pulse. 9 is a counter, 1
0 is a retriggerable timer circuit, 11 is an arrester flop circuit, 12 to 14 are gate circuits, and 15 is a battery life notification device. 16 is a delay circuit. In the above configuration, it is assumed that in the initial state, the minimum width normal drive pulse is selected by the output of the control circuit 8, and this is generated from the generation circuit 3 every second and sent to the drive circuit 5. The motors are then driven. The detection circuit 7 detects whether or not the motor A has rotated. If the motor A has rotated, no detection pulse is generated and the width of the normal drive pulse is maintained as described above.
゛And when the motors are not rotated by the normal drive pulse, a detection pulse is generated from the detection circuit 7 and the generation circuit 4
The divine aid drive pulse is generated from.

この補助駆動パルスは最大幅の通常駆動パルスより長い
幅に設定してあり、これによって確実にモータ互が駆動
される。一方上記検出パルスは制御回路８に供給され、
以降は上記より幅の長い通常駆動パルスが発生回路３か
ら発生する。また上記検出パルスはタイマ回路１ｏおよ
びカウンタ９に供給され、カウンタ９が１をカウントす
る。タイマ回路１０は一旦トリガされてから１秒より少
し長い時間の間に再びトリガされないとカウンタ９を９
セツトするように設定しである。したがって上記で通常
駆動パルス幅が長くなることによってモータ互が駆動さ
れ検出回路７から検出パルスが発生しなければカウンタ
９はリセットされる。The width of this auxiliary drive pulse is set to be longer than the maximum width of the normal drive pulse, so that the motors are reliably driven. On the other hand, the detection pulse is supplied to the control circuit 8,
Thereafter, a normal drive pulse with a longer width than the above is generated from the generation circuit 3. Further, the detection pulse is supplied to the timer circuit 1o and the counter 9, and the counter 9 counts 1. Once the timer circuit 10 has been triggered, if it is not triggered again within a period of time slightly longer than 1 second, the counter 9 will be set to 9.
It is set to set. Therefore, as the normal drive pulse width becomes longer as described above, the motors are driven one after the other, and unless a detection pulse is generated from the detection circuit 7, the counter 9 is reset.

そして何らかの原因によってモータ互の負荷が一時的に
大きくなり、電池電圧が十分あるにも拘らず通常駆動パ
ルス幅が長くなって第１図の斜線範囲内に入り込んでし
まうと、モータ互が通常駆動パルスによって回転された
にも拘らず非回転と検出されてしまう。そのため検出回
路７からは連続的に非回転の検出パルスが発生し、これ
が所定回数（例えば１０パルス程度）に達するとカウン
タ９から出力が生じ制御回路８がリセットされ、通常駆
動パルスが最小幅に復帰し第１図斜線部から抜は出され
、以後は適正な幅の通常駆動パルスによって駆動される
。一方カウンタ９からの上記出力によってカウンタ９が
リセットされ、やや遅れてアリツブフロップ回路１１が
セットされる。If the load on the motors becomes temporarily large for some reason, and the normal drive pulse width becomes longer and falls within the shaded range in Figure 1 even though the battery voltage is sufficient, the motors will not be driven normally. Even though it was rotated by the pulse, it was detected as not rotating. Therefore, a non-rotating detection pulse is continuously generated from the detection circuit 7, and when this reaches a predetermined number of times (for example, about 10 pulses), an output is generated from the counter 9 and the control circuit 8 is reset, and the normal drive pulse is reduced to the minimum width. It returns and is extracted from the shaded area in FIG. 1, and thereafter is driven by a normal drive pulse of an appropriate width. On the other hand, the counter 9 is reset by the above-mentioned output from the counter 9, and after a slight delay, the ARIB flop circuit 11 is set.

このアリツブフロップ回路１１は電池寿命を検出するた
めのもので、いま電池電圧が十分ある場合には５段階の
通常駆動パルスのうちのいずれかによってモータ互が駆
動されるものであるため、上記で通常駆動パルスが最小
幅に復帰した後検出回路７から連続して５回以上非回転
の検出パルスが生じることはありえない。そのためこの
場合にはカウンタ９から出力が生じる前にタイマ回路１
゜から出力が生じカウンタ９およびアリツブフロツブ回
路１１がリセットされ、寿命報知は行なわれない。This Aritube flop circuit 11 is for detecting the battery life, and if there is sufficient battery voltage, the motors are driven by one of the five normal drive pulses. After the normal drive pulse returns to the minimum width, it is impossible for the detection circuit 7 to generate non-rotation detection pulses five or more times in succession. Therefore, in this case, the timer circuit 1
An output is generated from .degree., the counter 9 and the alarm block circuit 11 are reset, and the life notification is not performed.

そして電池が消耗して最大幅の通常駆動パルスでもモー
タＡを駆動できず、１０回連続して非回転の検出パルス
が生じると上記の場合と同様にカウンタ９の出力によっ
て通常駆動パルスが最小幅に復帰するとともにカウンタ
９がリセットされ、さらに７リツプ７０ツブ回路１１が
セットされる。この場合にはいずれの通常駆動パルスで
もモータＡが駆動されないため、検出回路７からさらに
連続して非回転の検出パルスが発生しカウンタ９から再
び出力が生じる。これによってゲート回路１３から出力
が生じ報知装置１５によって電池寿命が報知される。Then, when the battery is exhausted and the motor A cannot be driven even with the maximum width normal drive pulse, and a non-rotation detection pulse occurs 10 times in a row, the normal drive pulse is changed to the minimum width by the output of the counter 9 as in the above case. At the same time, the counter 9 is reset and the 7-rip, 70-tub circuit 11 is set. In this case, since the motor A is not driven by any of the normal drive pulses, the detection circuit 7 generates non-rotation detection pulses continuously, and the counter 9 generates an output again. As a result, an output is generated from the gate circuit 13, and the notification device 15 notifies the battery life.

以上のように本発明によれば、通常駆動パルスによって
モータが回転されなかった場合には補助駆動パルスによ
って回転させその後は通常駆動パルスの幅を長くして駆
動し被動駆動パルスが連続して所定回数発生したときに
通常駆動パルスを最小幅に復帰させるようにしたので、
駆動電圧および駆動パルス幅が十分あってロータが回転
されたにも拘らず非回転と判定される範囲内に入り込ん
でしまった場合にも必ずこの範囲内から抜は出すことが
でき適正な幅の通常駆動パルス゛でモータを駆動するこ
とができる。As described above, according to the present invention, when the motor is not rotated by the normal drive pulse, it is rotated by the auxiliary drive pulse, and then the width of the normal drive pulse is lengthened to drive the motor, and the driven drive pulse is continuously applied to a predetermined level. Since the normal drive pulse is returned to the minimum width when it occurs a number of times,
Even if the drive voltage and drive pulse width are sufficient and the rotor is rotating, it still falls within the range where it is determined that it is not rotating, it can always be pulled out from within this range and the rotor can be rotated to an appropriate width. The motor can be driven with normal drive pulses.

また通常駆動パルスが一旦最小幅に復帰された後補助駆
動パルスが予め設定した数だけ連続して発生したとき電
池寿命を報知することにより、極めて簡単な構成を付加
するだけで容易にがっ確実に電池寿命な報知することが
できる。In addition, by notifying the battery life when a preset number of auxiliary drive pulses occur consecutively after the normal drive pulse has returned to its minimum width, it can be easily and reliably achieved by adding an extremely simple configuration. It is possible to notify you of the battery life.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図はモータが回転されたにも拘らず非回転と判定さ
・れる駆動パルス幅および駆動電圧範囲を示した説明図
、第２図は本発明の一実施例を示した論理回路図である
。 ３・・・・・・通常駆動パルスの発生回路４・・・・・
・補助駆動パルスの発°生回路６・・・・・・モータ ７・・・・・・検出回路 ８・・・・・・館１の制御回路 ９・・・・・・カウンタ １０・・・タイマ回路 １１・・・アリツブフロップ回路 １２〜１４・・・・・・ゲート回路 １５・・・・・・報知装置Fig. 1 is an explanatory diagram showing the drive pulse width and drive voltage range in which the motor is determined to be non-rotating even though it is rotating, and Fig. 2 is a logic circuit diagram showing an embodiment of the present invention. be. 3...Normal drive pulse generation circuit 4...
- Auxiliary drive pulse generation circuit 6... Motor 7... Detection circuit 8... Control circuit 9 of building 1... Counter 10... Timer circuit 11... Arrival flop circuits 12-14... Gate circuit 15... Notification device

Claims (2)

【特許請求の範囲】[Claims] （１）　　通常駆動パルスによってモータが回転された
か否かを検出する検出回路と、この検出回路によって回
転異常が検出されたとき補助駆動パルスを発生してモー
タを回転せしめる補助駆動パルス発生回路と、この補助
駆動パルスによる回転後に生じる通常駆動パルスの幅を
長くする第１の制御回路と、補助駆動パルスが所定数連
続して発生したときに通常駆動パルスを最小幅に復帰さ
せる第２の制御回路とからなる電子時計。(1) A detection circuit that detects whether or not the motor is rotated by a normal drive pulse, and an auxiliary drive pulse generation circuit that generates an auxiliary drive pulse to rotate the motor when abnormal rotation is detected by this detection circuit; A first control circuit that lengthens the width of the normal drive pulse generated after rotation by the auxiliary drive pulse, and a second control circuit that returns the normal drive pulse to the minimum width when a predetermined number of auxiliary drive pulses occur in succession. An electronic clock consisting of. （２）　　通常駆動パルスによってモータが回転された
か否かを検出する検出回路と、この検出回路によって回
転異常が検出されたとき補助駆動パルスを発生してモー
タを回転せしめる補助駆動パルス発生回路と、この補助
駆動パルスによる回転後に生じる通常駆動パルスの幅を
長くする第１の制御回路と、補助駆動パルスが所定数連
続して発生したときに通常駆動パルスを最小幅に復帰さ
せる第２の制御回路と、この第２の制御回路によって通
常駆動パルスが最小幅に復帰した後補助駆動パルスが予
め設定した回数だけ連続して発生したとき電池寿命を報
知する報知装置とからなる電子時計(2) a detection circuit that detects whether or not the motor is rotated by a normal drive pulse; and an auxiliary drive pulse generation circuit that generates an auxiliary drive pulse to rotate the motor when abnormal rotation is detected by this detection circuit; A first control circuit that lengthens the width of the normal drive pulse generated after rotation by the auxiliary drive pulse, and a second control circuit that returns the normal drive pulse to the minimum width when a predetermined number of auxiliary drive pulses occur in succession. and a notification device that notifies the battery life when the auxiliary drive pulses are continuously generated a preset number of times after the normal drive pulses have returned to the minimum width by the second control circuit.
JP16442181A 1981-10-15 1981-10-15 Electronic time piece Pending JPS5866089A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16442181A JPS5866089A (en) 1981-10-15 1981-10-15 Electronic time piece

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16442181A JPS5866089A (en) 1981-10-15 1981-10-15 Electronic time piece

Publications (1)

Publication Number Publication Date
JPS5866089A true JPS5866089A (en) 1983-04-20

Family

ID=15792820

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16442181A Pending JPS5866089A (en) 1981-10-15 1981-10-15 Electronic time piece

Country Status (1)

Country Link
JP (1) JPS5866089A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994016365A1 (en) * 1993-01-18 1994-07-21 Seiko Instruments Inc. Electronic timepiece
WO2005119377A1 (en) * 2004-06-04 2005-12-15 Seiko Instruments Inc. Analog electronic clock and motor control circuit

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5421874A (en) * 1977-07-20 1979-02-19 Seiko Epson Corp Electronic wristwatch
JPS5477164A (en) * 1977-12-02 1979-06-20 Seiko Instr & Electronics Ltd Electronic watch

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5421874A (en) * 1977-07-20 1979-02-19 Seiko Epson Corp Electronic wristwatch
JPS5477164A (en) * 1977-12-02 1979-06-20 Seiko Instr & Electronics Ltd Electronic watch

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994016365A1 (en) * 1993-01-18 1994-07-21 Seiko Instruments Inc. Electronic timepiece
WO2005119377A1 (en) * 2004-06-04 2005-12-15 Seiko Instruments Inc. Analog electronic clock and motor control circuit
JPWO2005119377A1 (en) * 2004-06-04 2008-04-03 セイコーインスツル株式会社 Analog electronic timepiece and motor control circuit
US8064294B2 (en) 2004-06-04 2011-11-22 Seiko Instruments Inc. Analogue electronic clock and motor control circuit
JP4863871B2 (en) * 2004-06-04 2012-01-25 セイコーインスツル株式会社 Analog electronic timepiece and motor control circuit

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