JPS6066171A - Device for predicting battery life of electronic apparatus - Google Patents

Abstract

PURPOSE:To predict exactly the lifetime of a battery at any time during the normal working period of an electronic apparatus by sampling and calculating successively the secondary source voltage. CONSTITUTION:The output voltage from a voltage input circuit 2 which takes in the terminal voltage of a high-capacity capacitor 1 as a secondary power source is converted by an A/D converting circuit 3 including a sample holding function and is saved temporarily in a storage circuit 4. On the other hand, the lifetime of the battery is calculated from a calculating circuit 5 in accordance with the terminal voltage Vn of the digitized capacitor 1 and the terminal voltage Vn-1 saved into the circuit 4 before one sampling period T and is displayed on a display body 7 via a display output circuit 6. The circuits 3-6 are successively time-controlled by an oscillating circuit 9 and a timing generating circuit 8 and the lifetime of the battery is successively calculated at every period T. The lifetime of the battery is thus exactly predicted at any time during the normal working period of the electronic apparatus.

Description

【発明の詳細な説明】 木兄甲は、医療機器やパーソナルコンピュータ等の電、
子機器の電池寿命予測装置に関する。例えば電子時計に
あっては、時計駆動回路と電池又は高容量コンデンサか
ら成る電源とがあり、この電源の電信残存量に対応する
電源機能存続期間（以下、電池寿命期間とぼう）を予測
表示する電池寿命予測装置が有れば、使用者にとっては
至極有益である。[Detailed Description of the Invention] Kienko is used for electrical equipment such as medical equipment and personal computers.
The present invention relates to a device for predicting battery life of a child device. For example, in an electronic watch, there is a clock drive circuit and a power source consisting of a battery or a high-capacity capacitor, and the power function duration (hereinafter referred to as battery life period) corresponding to the remaining amount of electric power of this power source is predicted and displayed. A battery life prediction device would be extremely beneficial to users.

従来の電子時計の電池寿命期間の予測表示方式としては
、電源の電圧降下がある設定値まで下った場合に２秒運
針（不足電圧警告）させる、又は太陽電池時計等におい
て二次電源がフルチャージされた場合に発光ダイオード
等を膚灯（フルチャージ表示）させる事等が知ら−Ｊっ
ている。いずれにしても、前記予測方式は一過性の予測
方式であり、時計の正規稼動ｊｊＪ１間中のいかなる時
刻においても電池寿命期間が予測できるものではなかっ
た。時計携帯者に七つでは、いつ電池ぎわにたるか不安
であった。Conventional methods for predicting the battery life of electronic watches include setting the hands in 2-second intervals (insufficient voltage warning) when the voltage of the power supply drops to a certain set value, or in solar-powered watches, etc., when the secondary power supply is fully charged. It is known that a light-emitting diode or the like is turned on (indicating a full charge) when the battery is charged. In any case, the above-mentioned prediction method is a temporary prediction method, and the battery life period cannot be predicted at any time during the regular operation jjJ1 of the watch. I was worried about when the battery would run out when I carried a watch with only seven batteries.

本発明は、かかる欠点を除去したもので、その目的は、
電子材チ器の正規稼動期間中のいか力る時刻においても
電池寿命期間を正確に予測する事である。The present invention eliminates such drawbacks, and its purpose is to:
To accurately predict the battery life period at any time during the normal operation period of an electronic device.

以下、実ＭＱ例に基づいて本発明の詳細な説明する。The present invention will be described in detail below based on an actual MQ example.

ｖ、１図は、太陽電池時計における、太陽電池への光入
力の停止を相定した時計の電池寿命期間の予測回路の機
能ブロック図である。（煩雑を避けるため、太陽雷、池
２時計駆動回路および充放電制御回路は省略する。）第
１図において、太陽電池の二次電源には、電気二重層原
理を応用した高容量コンデンサ１を有し、このコンデン
サの端子電圧を取り込む電圧入力回路２の出力電圧をザ
ンブル・ホールド機能金倉むアナログ−ディ式タル（以
下Ａ／Ｄ）変換回路３にてＡ　／　７）変換し記憶回路
４に一時待避する。一方、ディジタル値に１６き代った
高容量コンデンサ１の端子電圧Ｖｎと、−サンプリング
周期（Ｔ）前に記憶回路４に待避していた端子電圧Ｖ　
ｎ−１を基に計算回路５から時計のＭイ池寿命期間Ｌｎ
を演舞、シ、表示出力回路６をうΦじて表示体７へ表示
する。伺、各回路３〜６は、発振回路９とタイミング発
生回路８によって逐次時間管理され、サンプリング周期
（Ｔ）毎に電池寿命期間１、ｎ’を逐次演ｑ、する。FIG. 1 is a functional block diagram of a circuit for predicting the battery life period of a solar cell watch, which determines the stoppage of light input to the solar cell. (To avoid complexity, the solar lightning, pond 2 clock drive circuit, and charge/discharge control circuit are omitted.) In Figure 1, the secondary power source of the solar cell is a high-capacity capacitor 1 that applies the electric double layer principle. The output voltage of the voltage input circuit 2 which takes in the terminal voltage of this capacitor is converted to A/7) by an analog-to-digital (hereinafter referred to as A/D) converter circuit 3 with a Zumble hold function and stored in the memory circuit 4. Take temporary shelter. On the other hand, the terminal voltage Vn of the high-capacity capacitor 1, which has changed to a digital value of 16, and the terminal voltage V, which was saved in the memory circuit 4 before the -sampling period (T).
Based on n-1, the calculation circuit 5 calculates the life span Ln of the watch's battery.
is displayed on the display body 7 through the display output circuit 6. Each of the circuits 3 to 6 is sequentially time-managed by an oscillation circuit 9 and a timing generation circuit 8, and sequentially performs battery life periods 1 and n' at every sampling period (T).

第２図は、繰り返し演算による電池寿命期１ｊｌＬｎの
演貸方法を示すフローチャートである。第２図において
、周期（Ｔ）毎にＡ／１）変換さねた高容量コンデンサ
１の端子電圧を読み込む。現サンプリング時刻（ｔｎ）
での端子電圧’（（Ｖｎ’、−サンプリング周期（Ｔ）
前の端子電圧をＶ　ｎ　−１で表わすと、現時刻（ｔｎ
）での端子雷、圧の傾きＳｎはＳｎ　””　Ｖｎ−１−
Ｖｎとなる。ここでもしＳ　ｎ　）　Ｏならば高容量コ
ンデンサ１は放電中であ’ｊ）、Ｅ３ｎ≦０ならば充電
中である。また時計駆動回路の最低動作電圧をＶ。、高
容量コンデンサ１の最大定格電圧を■ｎｎａｘ　、およ
びコンデンサ１がＶｍａｘからＶ。FIG. 2 is a flowchart showing a method for calculating the battery life period 1jlLn through repeated calculations. In FIG. 2, the terminal voltage of the high capacity capacitor 1 converted by A/1 is read every cycle (T). Current sampling time (tn)
Terminal voltage '((Vn', - sampling period (T)
If the previous terminal voltage is expressed as V n -1, then the current time (tn
) at terminal lightning, the slope of pressure Sn is Sn ”” Vn-1-
It becomes Vn. Here, if S n ) O, the high capacity capacitor 1 is discharging (j), and if E3n≦0, it is charging. Also, the minimum operating voltage of the clock drive circuit is V. , the maximum rated voltage of high capacity capacitor 1 is ■nnax, and capacitor 1 is Vmax to V.

に放τ、降下する才での期間をＬｍａｘ、（最太雷池寿
命期間）とすわば、第６図の電圧降下（上昇）曲線を直
線近似した説、明図において三角形の相似条件から現時
刻（ｔｎ）での電池寿命期間Ｌｎは、Ｖｎ　Ｖ。τ, the period during which it drops is Lmax, (maximum thunder pond life period), so to speak, the voltage drop (rise) curve in Fig. 6 is approximated by a straight line, and the current time is calculated from the similarity condition of the triangle in the figure. The battery life period Ln at (tn) is Vn V.

放電中（Ｓｎ＞０）の場合：　Ｌ　ｎ　”””　Ｔ　Ｘ
　ｓ　ｎ充電中（Ｓｎ≦０）の場合：　Ｌｎ　＝　Ｌｍ
ａｘ　・−□ｒｎａｘ で計算出来るので、各々の場合についてＬｎを計算し結
果を表示体７へ表示する。During discharge (Sn>0): L n """ T X
s n When charging (Sn≦0): Ln = Lm
Since it can be calculated as ax·−□rnax, Ln is calculated for each case and the results are displayed on the display 7.

本実廁例性、第５図の説明図に見られる様に、一般的に
指ａ関数で表わされるコンデンサの放電曲綜を面ねと見
なして計算しているが、計算容量が許せば指＊　ｎｔ＋
　＠として計算する（計算大略）、又は端子電圧値Ｖｎ
の大きさによって適当な補正を加える等によって、市源
畢圧の広領域に亘って電池寿命期間Ｌｎの予測１６度不
向上させる事が出来る。いすわにせよ、上記例に見られ
る様に、二次電源電圧を遂次サンプリング・演算する事
によって、時計の正規稼動期間中のいか々る時刻におい
ても、二次電源の電荷残存量に対する電源機能存続期間
を予測表示する事が出来、携帯者にとって充電量がいつ
でもひと目で分か沙、太陽電池への充電要求時期の不明
確から生じる携帯者の不安を解消した最適な電池寿命予
測時計を捉供する事が出来る。In this practical example, as shown in the explanatory diagram in Figure 5, calculations are generally made by regarding the discharge curve of a capacitor expressed by the index a function as a plane, but if the calculation capacity allows, *nt+
Calculate as @ (calculation summary) or terminal voltage value Vn
By making an appropriate correction depending on the size of the battery life Ln, it is possible to improve the predicted battery life period Ln by 16 degrees over a wide range of internal pressures. In any case, as seen in the example above, by successively sampling and calculating the secondary power supply voltage, the power supply can be determined at any time during the normal operation of the watch, relative to the amount of charge remaining in the secondary power supply. An optimal battery life prediction watch that can predict and display the functional lifespan, allowing the wearer to know the amount of charge at a glance at any time, eliminating the wearer's anxiety caused by unclear timing of charging the solar battery. It is possible to provide support.

本発明は、上記実施例に見られる様に一次？（テ、源で
ある太陽電池に対して二次電源を備えた電子時計に限ら
ず、放電箱′圧がゆるやかな降下特性を有するアルカリ
マンガン乾電池等を一次電源とする電子枦器の１１１池
寿命期間の予測表示も可能となるものである。As seen in the above embodiments, the present invention is a first-order one? (111 battery life) Not only for electronic clocks with a secondary power source for the solar cell source, but also for electronic clocks whose primary power source is an alkaline manganese dry cell, etc., which has a gradual drop in discharge box pressure. It is also possible to display a predicted period.

同、本発明は、電池寿命の停止を不愉快に感するだけで
はすまされない電池寿命の停止時刻が後で重大な結果を
引き起こす医療機器分野やパーソナルコンピュータ等の
押開性メモリのバックアップ用蛍池又はコンデンサの寿
命（配置廖存続期間）予測にも利用できるものであるうIn the same way, the present invention is applied to fluorescent cells or capacitors used in the field of medical equipment and for backup of push-open memories in personal computers, etc., where the termination of battery life is not only an unpleasant experience, but also causes serious consequences later on. It can also be used to predict the lifespan of

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

第１図は木登りによる実施例の機能ブロック図。 第２図は実姉．例のフローチャ−１・。第３図｛づｈｌ
・ン明図である。 １・・・高容量コンデンサ　２・・・？Ｇ圧入力回路６
・・・Ａ／Ｄ変換回路　４・・・言１１億回路５・・・
目算回路　６・・・表示出力回路７・・・表示体 ８・・・・タイミング発生回路 ９・・・発振回路 以　上 出願人　株式会社　卵訪精工舎 イ（１７人　弁胛士　最一上　務 第１図 第３図FIG. 1 is a functional block diagram of an embodiment using tree climbing. Figure 2 is my older sister. Example flowchart-1. Figure 3 {zuhl
・This is a clear map. 1... High capacity capacitor 2...? G pressure input circuit 6
...A/D conversion circuit 4...1.1 billion circuits 5...
Estimation circuit 6...Display output circuit 7...Display body 8...Timing generation circuit 9...Oscillation circuit and above Applicants: Tamawa Seikosha Co., Ltd. (17 people) Figure 1 Figure 3

Claims (2)

【特許請求の範囲】[Claims] （１）少なくとも電子機器駆動回路と、電池又は高容量
コンデンサから成る電源と、この電源電圧を逐次サンプ
リングする入力回路と、この入力回路からの出力１１；
′圧の記憶回路と、計算回路とで構成され、前記電子機
器駆動回路の正規稼動期間中のいかなる時刻においても
、前記電源のπを荷残存景に対応する電源機能存在期間
を前記記憶回路と計算回路とで予測表示し得る様にした
事’ｔＢＰｊ徴とする電子機器の電池寿命予測装置。(1) At least an electronic device drive circuit, a power source consisting of a battery or a high-capacity capacitor, an input circuit that sequentially samples this power supply voltage, and an output 11 from this input circuit;
′ voltage storage circuit and a calculation circuit, and at any time during the normal operation period of the electronic device driving circuit, the storage circuit calculates the power supply function existence period corresponding to the load remaining state by π of the power supply. A battery life prediction device for electronic equipment that can predict and display the BPj indication using a calculation circuit. （２）少なくとも時計駆動回路と、太陽電池と、この太
陽電池全−次電源として充電される二次電池又は高Ｗ　
ｉＴｒコンデンサから成る二次電源を有する電子枦器の
電池寿命予測装置において、前記二次雷、源の電圧入力
回路と、この入力重圧のアナログ−ディジタル変換回路
と、この電圧値の記憶回路と、計算回路と、これ、らの
回路を時間管理するタイミング発生回路および表示回路
とで構成し、前記入力電圧を逐次サンプリングし近似計
算する事によって、前記時計駆動回路の正規稼動期間中
のいかなる時刻においても、太陽電池への光入力の無く
なった場合を想定した前記二次１丁、源の雷、荷残存曾
に対応する雷１源機能存続期間を前記表不回路へ予測表
示する事を％徴とする重子υ？器の電池寿命予測装置。(2) At least a clock drive circuit, a solar cell, and a secondary battery or high W battery charged as a primary power source for the solar cell.
A battery life prediction device for an electronic flasher having a secondary power source consisting of an iTr capacitor, comprising: a voltage input circuit for the secondary lightning source, an analog-to-digital conversion circuit for this input pressure, and a storage circuit for this voltage value; It consists of a calculation circuit, a timing generation circuit and a display circuit that manage time of these circuits, and by sequentially sampling the input voltage and performing approximate calculations, it is possible to calculate the timing at any time during the normal operation period of the clock drive circuit. Also, it is assumed that the lightning source function duration corresponding to the secondary one, the source lightning, and the remaining load is predicted and displayed in the table non-circuit, assuming the case where the light input to the solar cells disappears. Shigeko υ? Device for predicting battery life.