JPH04181135A - Electronic equipment with water depth meter - Google Patents

Electronic equipment with water depth meter

Info

Publication number
JPH04181135A
JPH04181135A JP2243375A JP24337590A JPH04181135A JP H04181135 A JPH04181135 A JP H04181135A JP 2243375 A JP2243375 A JP 2243375A JP 24337590 A JP24337590 A JP 24337590A JP H04181135 A JPH04181135 A JP H04181135A
Authority
JP
Japan
Prior art keywords
water depth
average water
depth
diving
data
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.)
Granted
Application number
JP2243375A
Other languages
Japanese (ja)
Other versions
JP2940115B2 (en
Inventor
Sayuri Oota
太田　さゆり
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.)
Seiko Epson Corp
Original Assignee
Seiko Epson Corp
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 Seiko Epson Corp filed Critical Seiko Epson Corp
Priority to DE1991603167 priority Critical patent/DE69103167T2/en
Priority to EP19910300118 priority patent/EP0439255B1/en
Priority to KR1019910000243A priority patent/KR910014685A/en
Priority to US07/639,633 priority patent/US5189646A/en
Publication of JPH04181135A publication Critical patent/JPH04181135A/en
Application granted granted Critical
Publication of JP2940115B2 publication Critical patent/JP2940115B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/30—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats
    • G01F23/48—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats using twisted spindles as transmission elements
    • G01F23/54—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats using twisted spindles as transmission elements using magnetically actuated indicating means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
    • B63C11/00—Equipment for dwelling or working underwater; Means for searching for underwater objects
    • B63C11/02—Divers' equipment

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Electric Clocks (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

PURPOSE:To enable safer diving by calculating and displaying average water depth based on diving time and a total water depth value. CONSTITUTION:A conversion signal is output from a CPU 24 to an A/D- converter 22 synchronized with a 1Hz signal, while power is supplied to a pressure sensor 21 in the converter 22. In the sensor 21, pressure is output as a voltage value, which is converted into digital data by the converter 22 and stored in a RAM 26 via the CPU 24. Then when data input from the converter 22 identifies diving in the CPU 24, the data is subjected to average water depth calculation processing to measure diving time and also the calculation result is output to an LCD 27 to be displayed. Thus safer diving is possible.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、平均水深値を表示可能な、水深計付電子機器
に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electronic device with a water depth gauge that can display an average water depth value.

〔従来の技術〕[Conventional technology]

通常ダイパーが潜水する際は、種々の器具を携帯し、安
全に十分な配慮をほどこしている。Normally, when Daiper dives, he carries a variety of equipment with him and takes great care to ensure his safety.

前記器具のなかの１つに水深計があり、ダイパーにとっ
て必要な情報である水深が計測される。One of the instruments is a water depth meter, which measures water depth, which is information necessary for the diver.

近年、水深の計測以外に最大深度機能、潜水時間計測機
能、深度アラーム、潜水時間のアラーム等、多機能化が
進められてきた。In recent years, in addition to water depth measurement, devices have become more multifunctional, including maximum depth functions, diving time measurement functions, depth alarms, and diving time alarms.

〔発明が解決しようとする課題〕[Problem to be solved by the invention]

一般にダイパーは、現在の体調により、タンクの消費量
の予測、減圧管理を行っている。Generally, Daiper predicts tank consumption and manages depressurization based on his current physical condition.

その体調の目安として、本人の意識の他に、平均水深、
潜水時間、対、タンク消費蓋の比率で理解することがで
きる。As a guide to their physical condition, in addition to their own consciousness, the average water depth,
It can be understood by the ratio of dive time to tank consumption.

しかし、従来の水深計付電子機器では、水深情報として
、現在水深、最大水深しか、機能をもっていなかったた
め、平均水深は、ダイパーの感覚で、記録されてきたた
め、確かなものではなく、不安全であった。However, conventional electronic devices with depth gauges only had the ability to provide depth information such as the current depth and maximum depth, so the average depth was recorded using a dipper, which was inaccurate and unsafe. Met.

本発明は、このような課題を鑑みてなされたものであっ
て、その目的とするところは、潜水時間と、総水深漬に
基づき、平均水深を演算し、表示することにより、ダイ
パーにとって、体調を知るうえでの重要な情報を入手で
き、より安全な潜水を可能とする、水深計付電子機器を
提供することを目的とする。The present invention has been made in view of the above problems, and its purpose is to calculate and display the average depth based on the diving time and total immersion depth, thereby improving the physical condition of divers. The purpose is to provide an electronic device with a depth gauge that allows you to obtain important information for knowing the depth of water and enables safer diving.

〔課題を解決するための手段〕[Means to solve the problem]

上記課題を解決するため、本発明の水深計付電子機器は
、第１図の機能ブロック図に示すように、（１）現在の
水圧を計測する圧力センサー（１１）と、 前記圧力センサー（１１）からのデータをデジタル圧力
値に変換するＡ／Ｄ変換手段（１２）と、前記Ａ／Ｄ変
換手段（１２）からの圧力データを記憶する記憶手段（
１３）と、 潜水時間を計測する、潜水時間計測手段（１４）と、 平均水深を演算する平均水深演算手段（１６）と、 平均水深を表示する、表示手ｆｉ（１７）とから構成さ
れる水深計付電子機器。In order to solve the above problems, the electronic device with a water depth gauge of the present invention, as shown in the functional block diagram of FIG. 1, includes (1) a pressure sensor (11) that measures the current water pressure; ) A/D conversion means (12) for converting data from the A/D conversion means (12) into digital pressure values, and storage means (12) for storing the pressure data from the A/D conversion means (12).
13), a diving time measuring means (14) for measuring the diving time, an average water depth calculating means (16) for calculating the average water depth, and a display hand fi (17) for displaying the average water depth. Electronic equipment with depth gauge.

（２）前記平均水深演算手段（１６）は、前記記憶手段
（１３）の圧力データを加算する加算手段１（１５）を
備え、 前記潜水時間計測手段（１４）の潜水時間データで、前
記データ加算手段１　（１５）の総水深データを除する
ことにより、平均水深を演算する水深計付電子機器。(2) The average water depth calculation means (16) includes an addition means 1 (15) for adding the pressure data of the storage means (13), and adds the diving time data of the diving time measuring means (14) to the data. Addition means 1 An electronic device with a water depth gauge that calculates an average water depth by dividing the total water depth data in (15).

（３）前記平均水深演算手段（１６）は、平均水深演算
サンプリングタイミングを形成するための計時手段（１
８）と、 前記計時手段（２８）からのタイミング信号がＯＮの時
、前記記憶手段（１３）の圧力データを加算する加算手
段２（１９）を備え、 前記データ加算手段２（１９）の総水深データをサンプ
リング回数で除することにより、平均水深を演算する水
深計付電子機器。(3) The average water depth calculation means (16) includes a time measurement means (16) for forming an average water depth calculation sampling timing.
8), and an adding means 2 (19) for adding the pressure data of the storage means (13) when the timing signal from the time measuring means (28) is ON, the total of the data adding means 2 (19) An electronic device with a depth gauge that calculates the average depth by dividing the depth data by the number of samplings.

（４）前記平均水深演算手段（１６）は、水圧計測毎に
、前回までの平均水深に（水圧計測回数−１）を乗じ、
乗じた結果に前記Ａ／Ｄ変換手段からの圧力データを加
算し、加算した結果を、水圧計測回数で除し、結果を平
均水深とする水深計付電子機器。(4) The average water depth calculation means (16) multiplies the average water depth up to the previous time by (number of water pressure measurements - 1) for each water pressure measurement,
An electronic device with a water depth gauge that adds pressure data from the A/D conversion means to the multiplied result, divides the added result by the number of water pressure measurements, and takes the result as an average water depth.

〔実施例〕〔Example〕

そこで、以下に本発明の水深計付電子機器の詳細を図示
した実施例に基づいて説明する。Therefore, details of the electronic device with a depth gauge of the present invention will be described below based on illustrated embodiments.

第２図は、本発明の水深計付電子機器の一実施例を示す
ものであって、 図中符号２３は、ＣＰＵ２４、ソフトウェアを格納する
ＲＯＭ２５、データを記憶するＲＡＭ２６からなるマイ
クロコンピュータである。FIG. 2 shows an embodiment of an electronic device with a depth gauge according to the present invention, and reference numeral 23 in the figure is a microcomputer consisting of a CPU 24, a ROM 25 for storing software, and a RAM 26 for storing data.

ＣＰＵ２４からＩＨ２信号に同期して、Ａ／Ｄ変換器２
２へ変換開始信号を出力する。開始信号を検知したＡ／
Ｄ変換器２２は、圧力センサー２１へ電源を投入する。In synchronization with the IH2 signal from the CPU 24, the A/D converter 2
A conversion start signal is output to 2. A/ that detected the start signal
The D converter 22 turns on the power to the pressure sensor 21 .

圧力センサー２１は、圧力を電圧値として、出力する。The pressure sensor 21 outputs pressure as a voltage value.

Ａ／Ｄ変換器２２は、入力した、アナログデータをデジ
タルデータに変換し、ＣＰＵ２４を介し、ＲＡＭ２６へ
格納する。The A/D converter 22 converts the input analog data into digital data and stores it in the RAM 26 via the CPU 24.

Ａ／Ｄ変換器２２から入力されたデータにより、ＣＰＵ
２４において、 潜水中とみなされれば、平均水深演算処理し、潜水時間
を計測すると供に、演算結果を、ＬＣＤ２７へ出力し、
表示する。Based on the data input from the A/D converter 22, the CPU
In step 24, if it is determined that the diver is diving, the average water depth is calculated, the diving time is measured, and the calculation results are output to the LCD 27.
indicate.

第３図（ａ）は、本発明の水深計付電子機器が、どのよ
うに動作されるかを示すフローチャートである。FIG. 3(a) is a flowchart showing how the electronic device with depth gauge of the present invention is operated.

フローチャートの流れに基づいて説明する。The explanation will be based on the flowchart.

まず、ＩＨ２信号が立上がり信号かどうか検知する。（
ステップ３０）立上りなら、時刻のカウントアツプ、ア
ラームチエツク等の時計処理を行う。（ステップ３１）
。次にＡ／Ｄ変換器へＡ／Ｄ変換開始信号を出力する（
ステップ３２）。First, it is detected whether the IH2 signal is a rising signal. (
Step 30) If it is a rising edge, perform clock processing such as counting up the time and checking the alarm. (Step 31)
. Next, output an A/D conversion start signal to the A/D converter (
Step 32).

現在、潜水中フラグをチエツクし、（ステップ３３）、
ＯＮならば、現在水深が、１゜５ｍ以上かどうかチエツ
クし、（ステップ３４）１．５ｍ以上ならば、潜水時間
＝潜水時間＋１秒（ステップ３５）、平均水深演算処理
（ステップ３６）を行う。最大水深と現在水深を比較し
くステップ３８）、現在水深の方が大きければ、最大水
深：現在水深（ステップ３９）とし、水深、潜水時間、
最大水深、平均水深、時刻を表示しくステップ４０）、
ＨＡＬＴに戻る。Check the current diving flag (step 33),
If it is ON, check whether the current water depth is 1.5 m or more (step 34), and if it is 1.5 m or more, perform diving time = diving time + 1 second (step 35) and average water depth calculation processing (step 36). . Compare the maximum water depth and the current water depth (step 38), and if the current water depth is greater, set the maximum water depth as the current water depth (step 39), and set the water depth, diving time,
Display the maximum water depth, average water depth, and time (step 40).
Return to HALT.

また、潜水フラグがＯＮで、現在水深が１．５ｍ未満の
場合、休息時間のリセット（ステップ４１）を行い、潜
水フラグを０ＦＦＬ、て（ステップ４２）、表示処理を
行い（ステップ４０）、ＨＡＬＴに戻る。In addition, if the diving flag is ON and the current water depth is less than 1.5 m, the rest time is reset (step 41), the diving flag is set to 0FFL (step 42), the display processing is performed (step 40), and the HALT Return to

また、潜水中フラグがＯＦＦの場合、現在水深が１．５
ｍ以上か比較しくステップ４３）、以上でなければ、休
息時間＝休息時間＋１秒（ステップ４４）とし、表示処
理を行い（ステップ４０）、ＨＡＬＴに戻る。Also, if the diving flag is OFF, the current water depth is 1.5.
If it is greater than or equal to m (step 43), if not, the rest time is set to rest time + 1 second (step 44), display processing is performed (step 40), and the process returns to HALT.

また、潜水中フラグがＯＦＦで、現在水深が１゜５ｍ以
上の場合、潜水フラグをＯＮしくステップ４５）、休息
時間が１０分以上か比較し、（ステップ４６）、１０分
以上ならば、総水源：現在水深（ステップ４７）、最大
水深＝現在水深（ステップ４８）とし、表示処理を行い
（ステップ４０）、ＨＡＬＴに戻る。Also, if the diving flag is OFF and the current water depth is 1.5 m or more, turn the diving flag ON (Step 45), compare whether the rest time is 10 minutes or more, (Step 46), and if it is 10 minutes or more, the total Water source: current water depth (step 47), maximum water depth = current water depth (step 48), performs display processing (step 40), and returns to HALT.

また、潜水中フラグＯＦＦ、現在水深１．５ｍ以上、休
息時間１０分未満ならば、潜水時間＝潜水時量子休息時
間（ステップ４９）とし、ステップ３５〜ステツプ４０
を実行し、ＨＡＬＴに戻る。Also, if the diving flag is OFF, the current water depth is 1.5 m or more, and the rest time is less than 10 minutes, the diving time = quantum rest time during diving (step 49), and steps 35 to 40
Execute and return to HALT.

また、ＩＨ２立上りでなければ、Ａ／Ｄ変換終了信号が
立ち上がりかチエツクしくステップ５０）、立ち上がり
でなければ、ＨＡＬＴに戻り、立ち上がりならば、Ａ／
Ｄ変換結果を入力し、ＨＡＬ　Ｔに戻る。If IH2 does not rise, check whether the A/D conversion end signal rises (step 50); if it does not rise, return to HALT; if it rises, check whether the A/D conversion end signal rises (step 50);
Input the D conversion result and return to HALT.

第３図（ｂ）は、ステップ３６の平均水深演算処理の一
実施例の詳細フローチャートである。FIG. 3(b) is a detailed flowchart of one embodiment of the average water depth calculation process in step 36.

潜水中であればサンプリング事に、前回までの総水深に
現在水深を加算し、加算された結果を総水深としくステ
ップ６１）、総水深を潜水時間で割り（ステップ６２）
、結果を平均水深とする。If diving, for sampling, add the current water depth to the total water depth up to the previous time, set the added result as the total water depth (step 61), and divide the total water depth by the diving time (step 62).
, let the result be the average water depth.

第３図（Ｃ）は、ステップ３６の平均水深演算処理の一
実施例の詳細フローチャートである。FIG. 3(C) is a detailed flowchart of one embodiment of the average water depth calculation process in step 36.

前回までの平均水深と潜水時間をマイナス１した値を乗
じ、その結果に現在水深を加算し、加算した値を総水深
としくステップ６３）、総水深を潜水時間で割り（ステ
ップ６４）、結果を平均水深とする。Multiply the average water depth up to the previous time by minus 1 for the diving time, add the current water depth to the result, set the added value as the total water depth (step 63), divide the total water depth by the diving time (step 64), and calculate the result. Let be the average water depth.

第３図（ｄ）は、ステップ３６の平均水深演算処理の一
実施例の詳細フローチャートである。FIG. 3(d) is a detailed flowchart of one embodiment of the average water depth calculation process in step 36.

平均水深サンプリング信号がＯＮかチエツクしくステッ
プ６５）、ＯＦＦならば、ステップ３８へ、ＯＮならば
、前回までの総水深に現水深を加算し、加算した値を総
水深としくステップ６６）、潜水時間をサンプリング時
間で割った値で、総水深を割り（ステップ６７）、結果
を平均水深とする。Check whether the average water depth sampling signal is ON (step 65); if it is OFF, go to step 38; if it is ON, add the current water depth to the total water depth up to the previous time, set the added value as the total water depth (step 66), and dive. The total water depth is divided by the value obtained by dividing the time by the sampling time (step 67), and the result is taken as the average water depth.

〔発明の効果〕〔Effect of the invention〕

以上述べたように発明によれば、 潜水時間、総水深データに基づいて、正確な平均水深を
自動的に演算し、表示することにより、表示された、平
均水深と、エアータンクの消費量の、比率により、ダイ
パーの体調を知る重要な手がかりとなるため、次の反復
潜水時のエアータンクの消費量の予測が可能となると供
に、減圧管理を行う上で、体調に合わせて、調整できる
ため、より安全な水深計付電子機器を提供することが可
能である。As described above, according to the invention, by automatically calculating and displaying an accurate average water depth based on the diving time and total water depth data, the displayed average water depth and air tank consumption can be easily calculated and displayed. The ratio provides important clues to the diver's physical condition, making it possible to predict the amount of air tank consumption during the next repeated dive, and making adjustments to suit the physical condition when managing decompression. Therefore, it is possible to provide a safer electronic device with a depth gauge.

また、平均水深値潜水時間エアー消費量より、潜水の上
達度、熟練度がわかるという効果がある。Further, it has the effect that the level of diving proficiency and proficiency can be determined from the average depth value and the amount of air consumed during diving time.

平均水深検出方法として、サンプリング方法を用いるこ
とにより、ソフト可動時間が短くなり、消費電流の削減
が可能となる。By using the sampling method as the average water depth detection method, the software operating time is shortened and current consumption can be reduced.

また、総水深を常に、ＲＡＭに持つのでなく、水圧計測
ごとに、平均水深、潜水時間を基に、求めることにより
、ＲＡＭ容量の削減が可能となるため、水深計付電子機
器の商品化に大なる効果がある。In addition, instead of always storing the total water depth in RAM, by calculating it based on the average water depth and diving time for each water pressure measurement, it is possible to reduce the RAM capacity, making it possible to commercialize electronic devices with depth gauges. It has a great effect.

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

第１図は、本発明の水深計付電子機器の構成を明示する
ためのブロック図。 第２図は、本発明の水深計付電子機器の一実施例を説明
する回路図。 第３図は、本発明の水深計付電子機器の動作を示すフロ
ーチャート。 以　　上 第１図 第２図FIG. 1 is a block diagram showing the configuration of an electronic device with a depth gauge according to the present invention. FIG. 2 is a circuit diagram illustrating an embodiment of an electronic device with a depth gauge according to the present invention. FIG. 3 is a flowchart showing the operation of the electronic device with a depth gauge according to the present invention. Above Figure 1 Figure 2

Claims (4)

【特許請求の範囲】[Claims] （１）少なくとも現在の水圧を計測する圧力センサーと
、 前記圧力センサーからのデータをデジタル圧力値に変換
するＡ／Ｄ変換手段と、 前記Ａ／Ｄ変換手段からの圧力データを記憶する記憶手
段と、 潜水時間を計測する、潜水時間計測手段と、平均水深を
演算する平均水深演算手段と、 平均水深を表示する、表示手段とから構成されることを
特徴とする水深計付電子機器。(1) A pressure sensor that measures at least current water pressure, A/D conversion means that converts data from the pressure sensor into a digital pressure value, and storage means that stores pressure data from the A/D conversion means. An electronic device with a depth gauge, comprising: a diving time measuring means for measuring a diving time; an average water depth calculating means for calculating an average water depth; and a display means for displaying the average water depth. （２）前記平均水深演算手段は、 前記記憶手段の圧力データを加算する加算手段１を備え
、(2) The average water depth calculation means includes an addition means 1 for adding pressure data in the storage means, （３）前記平均水深演算手段は、 平均水深演算サンプリングタイミングを形成するための
計時手段と、 前記計時手段からのタイミング信号がＯＮの時、前記記
憶手段の圧力データを加算する加算手段２を備え、 前記データ加算手段２の総水深データをサンプリング回
数で、除することにより、平均水深を演算することを特
徴とした請求項１記載の水深計付電子機器。(3) The average water depth calculation means includes: a timer for forming an average water depth calculation sampling timing; and an addition means 2 for adding pressure data in the storage means when a timing signal from the timer is ON. 2. The electronic device with a water depth gauge according to claim 1, wherein the average water depth is calculated by dividing the total water depth data of the data adding means 2 by the number of sampling times. （４）前記平均水深演算手段は、 水圧計測毎に、前回までの平均水深に（水圧計測回数−
１）を乗じ、乗じた結果に前記Ａ／Ｄ変換手段からの圧
力データを加算し、加算した結果を、水圧計測回数で除
し、結果を平均水深とすることを特徴とした請求項１記
載の水深計付電子機器。(4) For each water pressure measurement, the average water depth calculation means calculates the average water depth up to the previous time (number of water pressure measurements -
1), adding pressure data from the A/D conversion means to the multiplied result, dividing the added result by the number of water pressure measurements, and taking the result as an average water depth. Electronic equipment with depth gauge.
JP24337590A 1988-07-20 1990-09-13 Electronic equipment with water depth meter Expired - Fee Related JP2940115B2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE1991603167 DE69103167T2 (en) 1990-01-10 1991-01-08 Electronic device with depth indicator.
EP19910300118 EP0439255B1 (en) 1990-01-10 1991-01-08 Electronic apparatus with depth meter
KR1019910000243A KR910014685A (en) 1990-01-10 1991-01-10 Electronic devices with depth gauge
US07/639,633 US5189646A (en) 1988-07-20 1991-01-10 Small-sized electronic device with depth gauge

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP320990 1990-01-10
JP2-3209 1990-01-10

Publications (2)

Publication Number Publication Date
JPH04181135A true JPH04181135A (en) 1992-06-29
JP2940115B2 JP2940115B2 (en) 1999-08-25

Family

ID=11551055

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24337590A Expired - Fee Related JP2940115B2 (en) 1988-07-20 1990-09-13 Electronic equipment with water depth meter

Country Status (2)

Country Link
JP (1) JP2940115B2 (en)
KR (1) KR910014685A (en)

Also Published As

Publication number Publication date
KR910014685A (en) 1991-08-31
JP2940115B2 (en) 1999-08-25

Similar Documents

Publication Publication Date Title
US4794803A (en) Decompression and air consumption computer
US5031160A (en) Small-sized electronic device with depth gauge
US5189646A (en) Small-sized electronic device with depth gauge
US5156055A (en) Ascent rate meter for SCUBA divers
US4753117A (en) Decompression and air consumption computer
JP5280848B2 (en) Electronic balance
JPH04181135A (en) Electronic equipment with water depth meter
EP0439255B1 (en) Electronic apparatus with depth meter
JP3888161B2 (en) Information processing system and information processing method
JP2006051158A (en) Health index measuring method and measuring device
US6567756B1 (en) Portable pressure measuring apparatus
JPH07198807A (en) Computation apparatus for battery residual amount
JP3120883B2 (en) Counting scale
JP3127410B2 (en) Oxygen concentration detector
JP2803099B2 (en) Divers watch
JP3901145B2 (en) Individual safety information notification device for divers
JP2007155679A (en) Electronic balance
JP3070197B2 (en) Temperature measuring device
JP2619926B2 (en) Baby scale
JPS61260114A (en) Hydrobarometer
JP2870907B2 (en) Depth gauge
JPS6271889A (en) Electronic timepiece with bathometer
JP3520421B2 (en) Divers information processing device
JP3559291B2 (en) Pointer display clock
JP3353341B2 (en) Electronic depth gauge

Legal Events

Date Code Title Description
FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20090618

Year of fee payment: 10

LAPS Cancellation because of no payment of annual fees