JPH0560075B2 - - Google Patents
Info
- Publication number
- JPH0560075B2 JPH0560075B2 JP59201033A JP20103384A JPH0560075B2 JP H0560075 B2 JPH0560075 B2 JP H0560075B2 JP 59201033 A JP59201033 A JP 59201033A JP 20103384 A JP20103384 A JP 20103384A JP H0560075 B2 JPH0560075 B2 JP H0560075B2
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- time
- time information
- voltage
- storage means
- 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.)
- Expired - Fee Related
Links
- 238000001514 detection method Methods 0.000 claims description 34
- 230000010355 oscillation Effects 0.000 claims description 4
- 230000004044 response Effects 0.000 claims description 2
- 239000007784 solid electrolyte Substances 0.000 description 9
- 238000012937 correction Methods 0.000 description 6
- 239000003990 capacitor Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 230000007423 decrease Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010248 power generation Methods 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 210000004247 hand Anatomy 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
- 210000000707 wrist Anatomy 0.000 description 1
Classifications
-
- G—PHYSICS
- G04—HOROLOGY
- G04G—ELECTRONIC TIME-PIECES
- G04G19/00—Electric power supply circuits specially adapted for use in electronic time-pieces
- G04G19/12—Arrangements for reducing power consumption during storage
-
- G—PHYSICS
- G04—HOROLOGY
- G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
- G04C10/00—Arrangements of electric power supplies in time pieces
- G04C10/02—Arrangements of electric power supplies in time pieces the power supply being a radioactive or photovoltaic source
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は電池交換を必要としない電子時計に関
する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electronic timepiece that does not require battery replacement.
近年電子技術の発達により電子時計、特に水晶
腕時計が普及するに至つたが、これらの電子時計
は、エネルギー源として小型のボタン電池を使用
しているため２〜３年ごとの電池交換が必要であ
り、これが使用者にとつてわずらわしく、長期間
電池交換を必要としない電子時計が望まれてお
り、特に電池を入手しにくい地域ほどこの要求が
強いものとなつていた。
In recent years, with the development of electronic technology, electronic watches, especially quartz watches, have become popular, but since these electronic watches use small button batteries as an energy source, the batteries need to be replaced every 2 to 3 years. This is troublesome for users, and there has been a desire for an electronic watch that does not require battery replacement for a long period of time, and this demand is particularly strong in areas where batteries are difficult to obtain.
しかるに上記要求に答えるものとして、前記電
子時計の一部に太陽電池等の光発電手段を配設す
るとともに、前記太陽電池の起電力をニツケル・
カドミウム電池等の二次電池に充電したり、又は
銀電池等の一次電源に充電々圧を制御するための
充電制御回路を介して充電し、この充電々圧をエ
ネルギー源とする所謂太陽電池時計が実用化され
るに至つたが、上記太陽電池時計に於ける充電用
電池はいずれも電解液を使用した湿式電池である
ため、漏液等による劣化を伴い、特に時計用電池
のごとく小型化したものでは、５年程度の寿命し
かなく、前記のごとき長期間電池の交換不用とい
う要求に十分答えることが出来なかつた。 However, in order to meet the above requirements, a photovoltaic power generation means such as a solar cell is disposed in a part of the electronic watch, and the electromotive force of the solar cell is converted into a nickel metal.
A so-called solar cell watch that charges a secondary battery such as a cadmium battery, or charges a primary power source such as a silver battery via a charge control circuit to control the charging voltage, and uses this charging voltage as an energy source. has come into practical use, but since the rechargeable batteries in the solar-powered watches mentioned above are all wet batteries that use electrolyte, they suffer from deterioration due to leakage, etc., and it is difficult to reduce the size of batteries, especially for watches. However, these batteries had a lifespan of only about 5 years, and could not fully meet the above-mentioned demand for not having to replace batteries for a long period of time.
しかるに上記電池の交換不用という要求に答え
るものとして本出願人はすでに特願昭57−59091
号により、固体電解質電池や大容量コンデンサー
等の容量は小さいが劣化を伴わない蓄電器と太陽
電池等の発電装置を組合わせることによつて事実
上電池交換を不用にするとともに短時間のエネル
ギー不足に対す時刻の自動修正機能を備えた電子
時計を提案している。 However, in order to meet the above-mentioned requirement that batteries do not need to be replaced, the present applicant has already filed patent application No. 57-59091.
By combining electricity storage devices such as solid electrolyte batteries and large-capacity capacitors, which have a small capacity but do not cause deterioration, with power generation devices such as solar cells, it virtually eliminates the need for battery replacement and eliminates short-term energy shortages. We are proposing an electronic clock with an automatic time correction function.
しかるに上記提案に於いても蓄電器の容量が小
さいのをカバーするため、太陽電池への入射光が
低下した場合、前記蓄電器の充電々圧の低下を検
出して時刻表示動作を停止するとともに電子回路
による計時動作のみを行ない、前記太陽電池に対
する光入射が再開されたとき、蓄電池の充電レベ
ルの復帰を検出して時刻表示動作を再開する方式
を示したが、これでも十分なものとはいえず、前
記のごとき小容量の蓄電器を用いた電子時計の商
品化のためには、さらに充電々力を節約するため
の技術開発が必要とされていた。本発明の目的
は、上記要望に答えようとするものであり、充
電々力を極力節約することにより電池交換が不用
で、且つ通常使用状態に於いて、ぼとんど止まる
ことのない電子時計を提供することにある。
However, in the above proposal, in order to compensate for the small capacity of the capacitor, when the incident light to the solar cell decreases, the electronic circuit detects a drop in the charge voltage of the capacitor and stops the time display operation. However, this method is not sufficient. In order to commercialize electronic watches using small-capacity capacitors as described above, it was necessary to develop technology to further save charging power. The purpose of the present invention is to meet the above-mentioned needs, and to provide an electronic watch that saves charging power as much as possible, eliminates the need for battery replacement, and that does not stop running during normal use. Our goal is to provide the following.
本発明に於ける電子時計の構成は、発振回路、
分周回路、表示駆動回路及び時刻表示装置を有す
るとともに、太陽電池によつて充電された充電装
置をエネルギー源として動作する電子時計に於い
て、前記電子時計の周辺の照度を検出する照度検
出手段と、該照度検出手段の検出信号によつて動
作を開始するタイマーと、該タイマーの終了信号
によつて制御される表示制御回路を設けたことを
特徴とする。
The configuration of the electronic timepiece according to the present invention includes an oscillation circuit,
In an electronic watch that has a frequency dividing circuit, a display drive circuit, and a time display device and operates using a charging device charged by a solar cell as an energy source, an illuminance detection means for detecting the illuminance around the electronic watch. The present invention is characterized in that it includes a timer that starts operating in response to a detection signal from the illuminance detection means, and a display control circuit that is controlled by an end signal of the timer.
本発明に於ける電子時計の動作は、前記太陽電
池に対してタイマーによつて定められた一定時間
以上、継続して入射光が得られない時、前記時刻
表示装置による時刻表示動作を停止することによ
り、夜間放置等による長時間入射光が無い場合に
は、不使用と判断して時刻表示動作を停止してエ
ネルギーを節約し、又、タイマー時間以内の短時
間入射光が無い場合には、携帯中と判断して時刻
表示動作をそのまま継続させるようにしている。
The electronic timepiece according to the present invention operates by stopping the time display operation by the time display device when the solar cell does not receive continuous incident light for a certain period of time determined by a timer. Therefore, if there is no incident light for a long period of time due to being left at night, etc., it is determined that it is not used and the time display operation is stopped to save energy, and if there is no incident light for a short period of time within the timer time, , it is determined that the device is being carried, and the time display operation continues as it is.
以下、図面により本発明の実施例を詳記する。 Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
第２図は本発明に使用する充電装置の１例であ
る固体電解質電池１の断面図であり、２は固体電
解質、３はアノード金属、４はカソード金属、５
はモールド樹脂、６は外部リード電極であり、本
実施例に於ける固体電解質電池１は、固体電解質
２として〔Rb，Ag1，I5〕を、アノード金属３と
して〔Ag〕、カソード金属４として〔Rb，I3：
Ｃ〕を使用し、これを樹脂モールドしたものであ
り、外径10mmφ、固体電解質２の厚さ0.5mmの形
状を有する電池に於いて、開路電圧0.65〔Ｖ〕、容
量0.8（mA・Ｈ〕が得られた。しかるに電子腕時
計に於ける動作電圧及び消費電流の現状を考える
と、電子回路が0.7〔Ｖ〕、パルスモータが１〔Ｖ〕
以上の電圧によつて動作可能であり、又消費電流
は発振回路を含む電子回路が0.3〜0.5〔μA〕、又パ
ルスモータが、１秒運針の３針時計の場合、0.5
〔μA〕、５〜20秒運針の２針時計の場合、0.1〜0.2
〔μA〕程度であり、総合電流値としては３針時計
で１〔μA〕２針時計で0.7〔μA〕となる。 FIG. 2 is a cross-sectional view of a solid electrolyte battery 1, which is an example of a charging device used in the present invention, in which 2 is a solid electrolyte, 3 is an anode metal, 4 is a cathode metal, and 5
is a molding resin, 6 is an external lead electrode, and the solid electrolyte battery 1 in this embodiment has [Rb, Ag 1 , I 5 ] as the solid electrolyte 2, [Ag] as the anode metal 3, and cathode metal 4. As [Rb, I 3 :
C] and molded with resin, the battery has an outer diameter of 10 mmφ and a solid electrolyte 2 of 0.5 mm thickness, with an open circuit voltage of 0.65 [V] and a capacity of 0.8 (mA・H). However, considering the current operating voltage and current consumption of electronic watches, the electronic circuit has a voltage of 0.7 [V] and the pulse motor has a voltage of 1 [V].
The current consumption is 0.3 to 0.5 [μA] for electronic circuits including oscillation circuits, and 0.5 for a three-hand watch with one-second movement using a pulse motor.
[μA], 0.1 to 0.2 for a two-hand watch with a 5 to 20 second interval
It is about [μA], and the total current value is 1 [μA] for a three-hand watch and 0.7 [μA] for a two-hand watch.
本実施例に於いては上記条件を考慮し電池２個
を直列接続して1.3〔Ｖ〕の電子回路用電源として
いる。 In this embodiment, taking the above conditions into consideration, two batteries are connected in series to provide a 1.3 [V] power source for the electronic circuit.
前記固体電解質電池１の容量0.8（mA・Ｈ〕は
現状の電子時計を、充電が行われない状態でも５
〜10日間は、動作させることが出来るものであ
り、これは、従来の自動巻式ゼンマイ時計の維続
時間よりも長く、携帯者の通常の日常生活では停
止することなく動作を継続することが可能であ
る。 The capacity of the solid electrolyte battery 1 is 0.8 (mA・H), which can power a current electronic watch up to 500 mA even when not being charged.
It can be operated for up to 10 days, which is longer than the lifespan of conventional self-winding spring watches, and it can continue to operate without stopping during the wearer's normal daily life. It is possible.
又、本発明に於ける充電装置の他の例として
は、最近になつて開発された充電可能なリチユー
ム電池や、ボタン型電池と同じ形状で、0.3Fの容
量を有する湿式電気二重層キヤパシター等があ
る。 Other examples of the charging device according to the present invention include a recently developed rechargeable lithium battery, a wet type electric double layer capacitor that has the same shape as a button battery, and a capacity of 0.3F, etc. There is.
第１図は本発明に於ける運針表示装置を備えた
電子時計のブロツク線図であり、１０は充電装置
であり、前記固体電解質電池１が２個直列接続さ
れている。１１は前記充電装置１０を充電するた
めの発電手段である太陽電池、１２及び１３は、
充電回路を構成するダイオード及び抵抗である。
１４は発振回路、１５は分周回路であり、この分
周回路１５からは通常運針用周波数1、早送り用
周波数2、パルス巾成形用周波数3が出力されて
いる。１６は運針パルス発生回路、１７は早送り
パルス発生回路であり、それぞれ分周回路１５か
らの出力1，3、及び2，3を入力し、20秒周期
の運針パルスφtと、８Hzの早送りパルスφcを発
生する。１８はパルスモータ駆動回路、１９はパ
ルスモータ、２０は時針、２０ａ分針２０ｂより
なる２針式の運針表示装置である。２１は前記充
電装置１０の電圧低下を検出する電圧検出回路で
あり、予め定められた電圧値（本実施例ではパル
スモータの動作可能電圧である１〔Ｖ〕）以上の場
合、論理“１”、以下の場合論理“０”の出力信
号Sbを出力する。３０は、電子時計の周辺の照
度を検出する照度検出回路であり、前記太陽電池
１１の起電圧を直接検出することによつて照度を
判断するものであり、予め定められた明るさ以上
では論理“１”、それより暗い場合に論理“０”
の出力信号Ｓを出力する。 FIG. 1 is a block diagram of an electronic timepiece equipped with a hand movement display device according to the present invention, 10 is a charging device, and two solid electrolyte batteries 1 are connected in series. 11 is a solar cell which is a power generation means for charging the charging device 10; 12 and 13 are:
These are the diodes and resistors that make up the charging circuit.
14 is an oscillation circuit, and 15 is a frequency dividing circuit, from which a frequency 1 for normal hand operation, a frequency 2 for fast forwarding, and a frequency 3 for pulse width shaping are output. 16 is a hand movement pulse generation circuit, and 17 is a fast forward pulse generation circuit, which inputs the outputs 1 , 3 , and 2 , 3 from the frequency dividing circuit 15, respectively, and generates a hand movement pulse φt with a period of 20 seconds and a fast forward pulse φc with an 8 Hz period. occurs. 18 is a pulse motor drive circuit, 19 is a pulse motor, and 20 is a two-hand type hand movement display device consisting of an hour hand, 20a, and a minute hand 20b. Reference numeral 21 denotes a voltage detection circuit that detects a voltage drop in the charging device 10, and when the voltage is higher than a predetermined voltage value (in this embodiment, 1 [V], which is the operable voltage of the pulse motor), logic "1" is detected. , an output signal Sb of logic "0" is output in the following cases. Reference numeral 30 denotes an illuminance detection circuit that detects the illuminance around the electronic clock, which judges the illuminance by directly detecting the electromotive force of the solar cell 11, and when the brightness exceeds a predetermined brightness, the logic “1”, logic “0” if darker
Outputs an output signal S.
３１はタイマーであり、前記照度検出回路３０
の出力信号Ｓが論理“０”、すなわち入射光が
なくなるとリセツトが解除されることによつて動
作を開始し、OL端子に供給される運針パルスφt
を計数し予め定められた一定時間（本実施例では
30分間）経過すると終了信号Peを出力するが、
一定時間が経過する前に入射光が増加して照度検
出回路３０の出力端子Ｓが論理“１”になると
リセツトされるため、暗い状態が30分以上継続し
たときのみ終了信号Peが発生する。 31 is a timer, and the illuminance detection circuit 30
The operation starts when the output signal S is logic "0", that is, the reset is released when the incident light disappears, and the hand movement pulse φt is supplied to the OL terminal.
is counted for a predetermined period of time (in this example,
After 30 minutes), the end signal Pe is output, but
If the incident light increases and the output terminal S of the illuminance detection circuit 30 becomes logic "1" before a certain period of time has elapsed, it is reset, so the end signal Pe is generated only when the dark state continues for 30 minutes or more.
２２は時刻表示動作を制御する表示制御回路と
しての信号切換回路であり、前記タイマー３１の
出力信号によつて制御され、入力端子に供給さ
れる運針パルスφtを２個の出力端子O1，O2に切
換出力する。２３は運針パルス記憶回路であるア
ツプダウンカウンタ（以後UDカウンタと略記す
る）であり、アツプ端子Ｕには運針パルスφtが、
又ダウン端子Ｄには、早送りパルスφcがそれぞ
れ供給されている。尚本実施例では運針パルス記
憶回路２３が時間情報記憶手段としての機能を有
する。２４は前記UDカウンタ２３の零を検出す
る零検出回路、２５，３２はRSフリツプフロツ
プ（以後RS−FFと略記する）、２６，２７，２
９は、ANDゲート、２８はORゲート、３３はパ
ルス化回路である。尚本実施例ではRS−FF３２
が節電記憶手段としての機能を有する。 22 is a signal switching circuit as a display control circuit that controls the time display operation, and is controlled by the output signal of the timer 31, and transfers the hand movement pulse φt supplied to the input terminal to two output terminals O 1 , O Switch output to 2 . 23 is an up-down counter (hereinafter abbreviated as UD counter) which is a hand movement pulse storage circuit, and the up terminal U receives the hand movement pulse φt.
Further, a fast forward pulse φc is supplied to each down terminal D. In this embodiment, the hand movement pulse storage circuit 23 has a function as time information storage means. 24 is a zero detection circuit for detecting zero of the UD counter 23; 25, 32 are RS flip-flops (hereinafter abbreviated as RS-FF); 26, 27, 2
9 is an AND gate, 28 is an OR gate, and 33 is a pulse circuit. In this example, RS-FF32
has the function of a power saving storage means.
次に上記構成を有する電子時計の動作を説明す
る。まず太陽電池１１によつて充電装置１０が十
分に充電されており、かつ明るい場所に於ける通
常動作状態を説明する。 Next, the operation of the electronic timepiece having the above configuration will be explained. First, a normal operating state in a bright place where the charging device 10 is sufficiently charged by the solar cell 11 will be described.
この状態では充電装置１０の電圧が1.3〔Ｖ〕に
保持されているため電圧検出回路２１の出力端子
Ｑには論理“１”の信号Sbが出力されており、
又、周囲が充分明るいため照度検出回路３０の出
力端子Ｑにも論理“１”の信号Ｓが出力されて
いる。 In this state, the voltage of the charging device 10 is held at 1.3 [V], so a logic "1" signal Sb is output to the output terminal Q of the voltage detection circuit 21.
Furthermore, since the surroundings are sufficiently bright, a signal S of logic "1" is also output to the output terminal Q of the illuminance detection circuit 30.
したがつて信号SbとＳを入力とするANDゲ
ート２９を介してRS−FF３２はリセツトされ、
その出力は“１”に保持されている。 Therefore, the RS-FF 32 is reset via the AND gate 29 which receives the signals Sb and S, and
Its output is held at "1".
又UDカウンタ２３とRS−FF２５は信号切換
回路２２より出力される運針パルスφtによつて
強制的にリセツトされているためRS−FF２５の
出力端子Ｑが“０”，が“１”となりANDゲー
ト２６がOFF，ANDゲート２７がONの状態と
なつている。 Also, since the UD counter 23 and RS-FF25 are forcibly reset by the hand movement pulse φt output from the signal switching circuit 22, the output terminal Q of the RS-FF25 becomes "0" and "1", and the AND gate is activated. 26 is in an OFF state, and an AND gate 27 is in an ON state.
この結果信号切換回路２２は、制御端子Ｃが
“１”に保持されることによつて入力端子への
運針パルスφtを出力端子O1に選択出力し、又早
送りパルスφcはANDゲート２６によつて阻止さ
れている。 As a result, the signal switching circuit 22 selectively outputs the hand movement pulse φt to the input terminal to the output terminal O1 by holding the control terminal C at “ 1 ”, and the fast forward pulse φc is output by the AND gate 26. It is being prevented.
したがつてこの状態に於いては信号選択回路２
２によつて選択された20秒周期の運針パルスφt
がパルスモータ駆動回路１８によつてパルスモー
タ１９を駆動することにより通常の時計動作を行
つている。この状態より電子時計の携帯者がその
携帯姿勢の変化や、暗い場所への出入り等によつ
て前記太陽電池１１への入射光を遮つた場合につ
いて考えると、太陽電池１１への入射光が遮られ
た瞬間に照度検出回路３０の出力信号Ｓが
“０”に反転することによつてタイマー３１はリ
セツトが解除されて動作を開始する。しかし前記
のような遮光条件の場合には、30分も継続するこ
となく、すぐに光入射が再開されるので、この入
射光によつて照度検出回路３０の出力信号Ｓが
再び“１”に反転し、タイマー３１をリセツトし
てしまう。 Therefore, in this state, the signal selection circuit 2
20-second cycle hand movement pulse φt selected by 2
The pulse motor drive circuit 18 drives the pulse motor 19 to perform normal clock operation. Considering the case where the person wearing the electronic watch blocks the light incident on the solar cell 11 due to a change in the posture of carrying the electronic watch or going in and out of a dark place, etc., the light incident on the solar cell 11 is blocked. At the moment when the output signal S of the illuminance detection circuit 30 is inverted to "0", the timer 31 is released from reset and starts operating. However, in the case of the above-mentioned light blocking condition, the light incidence resumes immediately without continuing for 30 minutes, so the output signal S of the illuminance detection circuit 30 becomes "1" again due to this incident light. The result is reversed and the timer 31 is reset.
したがつて30分以内での光遮蔽に対してはタイ
マー３１の断続動作が繰返されるだけで、通常の
時計動作が行われる。 Therefore, if the light is blocked for less than 30 minutes, the timer 31 simply repeats the intermittent operation, and normal clock operation is performed.
次に携帯者が電子時計を腕からはずして机の引
出しに入れたまま、充電が行われない状態にてし
ばらくの間放置した場合について考えると、放置
されて入射光がなくなると充電装置１０への充電
が行われなくなると同時に照度検出回路３０の出
力信号Ｓが“０”に反転してANDゲート２９
がOFFになるとともにタイマー３１が動作を開
始する。 Next, consider a case where the wearer takes off the electronic watch from his wrist and leaves it in a desk drawer for a while without charging. At the same time that charging is no longer performed, the output signal S of the illuminance detection circuit 30 is inverted to "0" and the AND gate 29
When the timer 31 turns off, the timer 31 starts operating.
そして放置してから30分が経過するとタイマー
３１から終了信号Peが発生し、RS−FF３２をセ
ツトすることにより、その出力端子が“０”に
反転し、ANDゲート２７をOFFにする。 When 30 minutes have elapsed since the timer 31 was left unused, the end signal Pe is generated from the timer 31, and by setting the RS-FF 32, its output terminal is inverted to "0" and the AND gate 27 is turned off.
この結果信号切換回路２２の制御端子Ｃが
“０”になることによつて切換動作が行われ、運
針パルスφtを出力端子O2に選択出力してUDカウ
ンタ２３のアツプ端子Ｕに供給し、計数を開始す
る。すなわち太陽電池１１に対する光入射がなく
なつてから30分経過した後は、パルスモータ１９
の駆動を中止し、この間に発生する運針パルス
φtをUDカウンタ２３に計数記憶させることによ
つて充電されなくなつた充電装置１０よりの電力
消費を極力低減させるとともに時刻情報を維持さ
せている。 As a result, the control terminal C of the signal switching circuit 22 becomes "0" and a switching operation is performed, and the hand movement pulse φt is selectively outputted to the output terminal O2 and supplied to the up terminal U of the UD counter 23. Start counting. In other words, after 30 minutes have passed since no light is incident on the solar cell 11, the pulse motor 19
By stopping the driving of the charging device 10 and having the UD counter 23 count and store the hand movement pulse φt generated during this period, power consumption from the charging device 10 that is no longer being charged is reduced as much as possible, and time information is maintained.
しかしこの状態が続くと充電装置１０の電圧が
除々に低下してきて、ついに１〔Ｖ〕以下に低下
することによつて電圧検出回路２１の出力端子Ｑ
の出力信号Sbが“０”に反転し、ANDゲート２
９をOFFにする。 However, if this state continues, the voltage of the charging device 10 gradually decreases and finally drops below 1 [V], causing the voltage at the output terminal Q of the voltage detection circuit 21 to decrease.
The output signal Sb of is inverted to “0” and AND gate 2
Turn 9 off.
そしてこのままの状態がさらに持続されると、
やがて充電装置１０の電圧が回路の動作維持電圧
より低下することによつて電子時計は完全に停止
することになるが、この完全に停止する以前に電
子時計を机の引出しから再び取出して光入射を再
開した場合の動作について説明する。 And if this state continues,
Eventually, the voltage of the charging device 10 will drop below the operating maintenance voltage of the circuit, and the electronic watch will stop completely, but before this complete stop, the electronic watch should be taken out of the desk drawer again and exposed to light. We will explain the operation when restarting.
まず充電装置１０の電圧が１〔Ｖ〕以下に低下
する前に電子時計を取出した場合について説明す
る。 First, a case will be described in which the electronic watch is removed before the voltage of the charging device 10 drops to 1 [V] or less.
光入射が再開されると同時に照度検出回路３０
の出力信号Ｓが“１”に復帰するが、この時、
充電装置１０の電圧が１〔Ｖ〕以上に維持されて
いることによつて電圧検出回路２１の出力信号
Sbも“１”となつているためANDゲート２９を
介してRS−FF３２がリセツトされ、その出力端
子が“１”に反転する。そして、この端子の
反転信号はANDゲート２７をON条件にすると
ともにパルス化回路３３によつて復帰パルスPf
となりRS−FF２５をセツトすることによりその
出力端子Ｑを“１”，を“０”に反転させる。 At the same time as the light incidence is resumed, the illuminance detection circuit 30
The output signal S of returns to “1”, but at this time,
Since the voltage of the charging device 10 is maintained at 1 [V] or more, the output signal of the voltage detection circuit 21
Since Sb is also "1", the RS-FF 32 is reset via the AND gate 29, and its output terminal is inverted to "1". Then, the inverted signal of this terminal turns ON the AND gate 27, and the pulse generator 33 generates a return pulse Pf.
Therefore, by setting the RS-FF 25, its output terminal Q is inverted to "1" and to "0".
この結果ANDゲート２７は、前記RS−FF３
２の出力端子Ｑは“１”になるが、同時にRS−
FF２５の出力端子が“０”になるためOFF状
態を維持し、又ANDゲート２６はRS−FF２５
の出力端子ＱによつてON状態となり、早送りパ
ルスφcを通過させる。そしてこのANDゲート２
６を通過した早送りパルスφcは、ORゲート２８
を介してパルスモータ駆動回路１８に供給される
ことによつて運針表示装置２０を早送り修正する
とともにUDカウンタ２３の減算端子Ｄに供給さ
れ、UDカウンタ２３の減算を開始する。 As a result, the AND gate 27
The output terminal Q of 2 becomes “1”, but at the same time RS-
Since the output terminal of FF25 becomes "0", the OFF state is maintained, and the AND gate 26 is connected to the RS-FF25.
It is turned on by the output terminal Q of , and the fast forward pulse φc is passed through. And this AND gate 2
The fast forward pulse φc that has passed through the OR gate 28
It is supplied to the pulse motor drive circuit 18 via the pulse motor drive circuit 18 to correct the hand movement display device 20 in fast forward mode, and is also supplied to the subtraction terminal D of the UD counter 23 to start the subtraction of the UD counter 23.
そしてUDカウンタ２３に於ける上記減算動作
によつて計数記憶された運針パルスφtの数に対
応する減算が終了すると零検出回路２４より零検
出パルスPrが出力され、RS−FF２５をリセツト
する。この結果出力端子Ｑに接続されたANDゲ
ート２６をOFFに反転させることにより早送り
修正動作を終了すると同時に出力端子に接続さ
れたANDゲート２７をONに反転させて、信号
切換回路２２の制御端子Ｃを“１”に復帰させ、
運針パルスφtによる通常時計動作を再開する。 When the subtraction corresponding to the number of hand movement pulses φt counted and stored by the above-mentioned subtraction operation in the UD counter 23 is completed, a zero detection pulse Pr is outputted from the zero detection circuit 24, and the RS-FF 25 is reset. As a result, the AND gate 26 connected to the output terminal Q is turned OFF to complete the fast forward correction operation, and at the same time, the AND gate 27 connected to the output terminal is turned ON, and the control terminal C of the signal switching circuit 22 is turned OFF. returns to “1”,
Resumes normal clock operation using the hand movement pulse φt.
上記一連の早送り修正動作により、入射光の遮
断後運針の中止によつて遅れた時間を完全に補正
することが出来る。 Through the series of fast forward correction operations described above, it is possible to completely correct the time delay caused by stopping the movement of the hands after cutting off the incident light.
次に前記電子時計の放置中に充電装置１０の電
圧が１〔Ｖ〕以下に低下し、かつ電子回路の動作
可能電圧0.7〔Ｖ〕以上にある間に取出した場合に
ついて説明する。光入射が再開されると同時に照
度検出回路３０の出力信号が“１”に復帰する
が、この時充電装置１０の電圧が１〔Ｖ〕以下で、
電圧検出回路２１の出力信号Sbが“０”となつ
ているためANDゲート２９がOFFとなつてRS−
FFのリセツトが行わされず、早修正動作はスタ
ートしない。 Next, a case will be described in which the voltage of the charging device 10 drops to 1 [V] or less while the electronic watch is left unattended, and is removed while the electronic circuit's operable voltage is 0.7 [V] or more. At the same time as the light incidence is resumed, the output signal of the illuminance detection circuit 30 returns to "1", but at this time, if the voltage of the charging device 10 is 1 [V] or less,
Since the output signal Sb of the voltage detection circuit 21 is "0", the AND gate 29 is turned off and RS-
The FF is not reset and the quick correction operation does not start.
そして太陽電池１１に対する光入射によつて充
電装置１０の電圧が上昇していき、やがてパルス
モータが動作可能な１〔Ｖ〕以上になつた瞬間に
電圧検出回路２１の出力信号Sbが“１”に反転
する。この結果電圧検出回路２１の出力信号Sb
と照度検出回路３０の出力信号Ｓとが共に
“１”になることによりANDゲート２９を介して
RS−FF３２がリセツトされ、前述のごとく早送
り修正が行われる。 Then, the voltage of the charging device 10 increases due to light incident on the solar cell 11, and at the moment when the voltage reaches 1 [V] or more at which the pulse motor can operate, the output signal Sb of the voltage detection circuit 21 becomes "1". to be reversed. As a result, the output signal Sb of the voltage detection circuit 21
and the output signal S of the illuminance detection circuit 30 both become “1”,
The RS-FF 32 is reset and fast forward correction is performed as described above.
そして上記構成を有する電子時計は、寝る時に
机の引出しに入れずに、机上に置いとけば、睡眠
中の暗い時間帯は時刻表示動作を停止してエネル
ギーを節約し、夜明けで明るくなつた時に自動的
に時刻修正動作が行われてしまうため、携帯者が
朝使用するときには、すでに正常な時刻表示が行
われていることになる。 If you put an electronic clock with the above configuration on your desk instead of putting it in the desk drawer when you go to bed, it will stop displaying the time during the dark hours of your sleep to save energy, and when it gets brighter at dawn. Since the time is automatically adjusted, the correct time will already be displayed when the user uses the watch in the morning.
尚本実施例では運針表示装置を備えたアナログ
電子時計について述べたが、これに限定されるも
のではなく、液晶及びエレクトロクロミズム等の
電気光学表示装置を備えたデジタル電子時計に於
いても同様な効果を有するものであり、この場合
には、時刻カウンタによつて時間情報が常に記憶
されているため、早送り修正回路を必要とせず、
表示制御回路によつて直接表示駆動回路を制御し
て表示消去を行うことが出来、又電圧検出回路２
１の設定レベルは、電子回路の動作可能電圧より
高く、かつ表示装置の動作限界電圧にセツトすれ
ばよい。 Although this example describes an analog electronic watch equipped with a hand movement display device, the present invention is not limited to this, and the same applies to digital electronic watches equipped with electro-optical display devices such as liquid crystal and electrochromism. In this case, since the time information is always stored by the time counter, there is no need for a fast forward correction circuit.
The display control circuit can directly control the display drive circuit to erase the display, and the voltage detection circuit 2
The setting level 1 may be set higher than the operating voltage of the electronic circuit and at the operating limit voltage of the display device.
上記のごとく本発明によれば、比較的容量は小
さいが事実上電池交換を必要としない電源システ
ムを採用するとともに、この電源システムに照度
検出回路と、この照度検出手段の検出信号によつ
て動作を制御されるタイマーを設けることにより
時刻表示を必要としない睡眠中等に於いては表示
動作を停止してエネルギーを節約するとともに、
携帯者の姿勢変化等、短時間の光遮断に対して
は、時刻表示を継続させることによつて通常の使
用に於いては携帯者に不便をかけることなく完全
に停止する迄の期間を飛躍的に改善した電子時計
の提供が可能となつた。
As described above, according to the present invention, a power supply system that has a relatively small capacity but virtually does not require battery replacement is adopted, and this power supply system is equipped with an illuminance detection circuit and is operated by the detection signal of this illuminance detection means. By providing a timer that controls the time, the display operation can be stopped during times such as sleep when the time display is not required, saving energy.
In the event of a short-term light blockage due to a change in the wearer's posture, by continuing to display the time, it will be possible to significantly extend the period until the light stops completely during normal use without causing any inconvenience to the wearer. It has now become possible to provide an electronic clock with improved performance.
第１図は本発明の電子時計のブロツク線図、第
２図は本発明に使用した固体電解質電池の断面図
である。
１０……充電装置、１５……分周回路、１９…
…パルスモータ、２１……電圧検出回路、２２…
…信号切換回路、２３……アツプダウンカウン
タ、３０……照度検出回路、３１……タイマー。
FIG. 1 is a block diagram of the electronic timepiece of the present invention, and FIG. 2 is a sectional view of the solid electrolyte battery used in the present invention. 10... Charging device, 15... Frequency dividing circuit, 19...
...Pulse motor, 21...Voltage detection circuit, 22...
...Signal switching circuit, 23...Up-down counter, 30...Illuminance detection circuit, 31...Timer.
Claims (1)
表示装置を有するとともに、太陽電池によつて充
電された充電装置をエネルギー源として動作する
電子時計に於いて、前記電子時計の周辺の照度を
検出する照度検出手段と、該照度検出手段の検出
信号によつて動作を開始するタイマーと、該タイ
マーの終了信号によつて制御される節電記憶手段
と該節電記憶手段によつて制御される表示制御回
路と、該表示制御回路による節電動作中の時間情
報を記憶する時間情報記憶手段と、前記充電装置
の電圧レベルを検出する電圧検出回路を設け、前
記太陽電池に対してタイマーによつて定められた
一定時間以上、継続して入射光が得られない時、
前記節電記憶手段をセツトすることにより前記時
刻表示装置による時刻表示動作を停止させるとと
もに、停止中の時間情報を前記時間情報記憶手段
に記憶させて節電状態とし、前記太陽電池に再度
入射光が得られた時、前記照度検出手段の出力と
前記電圧検出回路の出力とによつて前記節電記憶
手段をリセツトすることにより前記表示制御回路
による節電動作を解除し、前記時間情報記憶手段
の時間情報に従つて現在時刻への復帰動作を行う
ことを特徴とする電子時計。1. In an electronic watch that has an oscillation circuit, a frequency dividing circuit, a display drive circuit, and a time display device, and operates using a charging device charged by a solar cell as an energy source, detecting the illuminance around the electronic watch. a timer that starts operating in response to a detection signal from the illuminance detection means; a power-saving storage device controlled by an end signal of the timer; and a display control controlled by the power-saving storage device. a circuit, a time information storage means for storing time information during power saving operation by the display control circuit, and a voltage detection circuit for detecting the voltage level of the charging device, When the incident light cannot be obtained continuously for a certain period of time,
By setting the power saving storage means, the time display operation by the time display device is stopped, and the time information during the stop is stored in the time information storage means to enter a power saving state, so that the solar cell can receive incident light again. When the power saving operation by the display control circuit is canceled by resetting the power saving storage means using the output of the illuminance detection means and the output of the voltage detection circuit, the time information stored in the time information storage means is reset. Therefore, an electronic watch is characterized in that it performs an operation of returning to the current time.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59201033A JPS6177788A (en) | 1984-09-26 | 1984-09-26 | Electronic timepiece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59201033A JPS6177788A (en) | 1984-09-26 | 1984-09-26 | Electronic timepiece |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6177788A JPS6177788A (en) | 1986-04-21 |
| JPH0560075B2 true JPH0560075B2 (en) | 1993-09-01 |
Family
ID=16434324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59201033A Granted JPS6177788A (en) | 1984-09-26 | 1984-09-26 | Electronic timepiece |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6177788A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0982637A1 (en) * | 1995-09-26 | 2000-03-01 | Citizen Watch Co. Ltd. | Electronic watch |
| DE69841875D1 (en) | 1997-11-20 | 2010-10-14 | Seiko Epson Corp | Electronic device and method for controlling its energy consumption |
| WO2000067079A1 (en) * | 1999-04-28 | 2000-11-09 | Citizen Watch Co., Ltd. | Electronic clock and method of controlling the clock |
| US6288979B1 (en) * | 2000-04-06 | 2001-09-11 | Moneray International Ltd. | Solar-driven eternity clock |
| EP1326146A4 (en) * | 2000-08-15 | 2004-10-06 | Citizen Watch Co Ltd | Electronic timepiece and method of driving electronic timepiece |
| JP2013156159A (en) | 2012-01-30 | 2013-08-15 | Seiko Instruments Inc | Electronic watch |
| US11237524B2 (en) | 2017-09-21 | 2022-02-01 | Seiko Instruments Inc. | Timepiece, electronic device, and method of determining illuminance of timepiece |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52143068A (en) * | 1976-05-25 | 1977-11-29 | Citizen Watch Co Ltd | Solar battery timepiece |
| JPS57211579A (en) * | 1981-06-23 | 1982-12-25 | Citizen Watch Co Ltd | Hand display type electronic watch |
-
1984
- 1984-09-26 JP JP59201033A patent/JPS6177788A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52143068A (en) * | 1976-05-25 | 1977-11-29 | Citizen Watch Co Ltd | Solar battery timepiece |
| JPS57211579A (en) * | 1981-06-23 | 1982-12-25 | Citizen Watch Co Ltd | Hand display type electronic watch |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6177788A (en) | 1986-04-21 |
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