JPS61296216A - Oil gauge - Google Patents
Oil gaugeInfo
- Publication number
- JPS61296216A JPS61296216A JP60139325A JP13932585A JPS61296216A JP S61296216 A JPS61296216 A JP S61296216A JP 60139325 A JP60139325 A JP 60139325A JP 13932585 A JP13932585 A JP 13932585A JP S61296216 A JPS61296216 A JP S61296216A
- Authority
- JP
- Japan
- Prior art keywords
- display
- output
- storage device
- liquid level
- outputs
- 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
Links
Landscapes
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は油量を表示するもので、特に石油機器のカート
リッジタンクのように油面が激しく揺れる場合に適した
油量計に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to an oil level gauge that indicates the amount of oil, and is particularly suitable for use in cases where the oil level fluctuates violently, such as in cartridge tanks of petroleum equipment.
従来の技術 従来のこの種の油量計の一例を第４図に示す。Conventional technology An example of a conventional oil level gauge of this type is shown in FIG.
１は商用交流電源、２はトランス、３は検出手段、４は
表示装置である。検出手段３はホトダイオード５．６で
色を検出するものであり、ホトダイオード５．６の短絡
電流は演算増幅器７．８とダイオード９．１０でそれぞ
れ対数圧縮され、演算増幅器１１と抵抗１２〜１５の差
動増幅回路で減算され、その出力電圧は比較器１６〜１
９と抵抗２０〜２４の比較回路で比較され、液位に応じ
た信号を表示装置４に出力するものである。表示装置４
は４個の発光ダイオード２５〜２８で検出手段３の出力
信号に応じ液位を点灯表示するものである。1 is a commercial AC power supply, 2 is a transformer, 3 is a detection means, and 4 is a display device. The detection means 3 uses a photodiode 5.6 to detect color, and the short circuit current of the photodiode 5.6 is logarithmically compressed by an operational amplifier 7.8 and a diode 9.10, and The output voltage is subtracted by the differential amplifier circuit and the output voltage is sent to the comparators 16 to 1.
9 and resistors 20 to 24 in a comparison circuit, and a signal corresponding to the liquid level is output to the display device 4. Display device 4
The four light emitting diodes 25 to 28 light up to indicate the liquid level in response to the output signal of the detection means 3.
ダイオード２９．３０、コンデンサ３１．３２は直流電
源のため、抵抗３３〜３６は電流制限のだめにある。（
例えば特開昭５９−２８６２２号公報）
発明が解決しようとする問題点
しかしながら上記のような構成では、石油機器のカート
リッジタンクのように油面が激しく揺れると表示が激し
く変わり、点灯消灯を繰り返すようなことがあυ、見づ
らく油量がわかりにくいという問題点を有していた。Since the diodes 29 and 30 and the capacitors 31 and 32 are DC power supplies, the resistors 33 to 36 are used to limit the current. (
(For example, Japanese Patent Application Laid-open No. 59-28622) Problems to be Solved by the Invention However, with the above configuration, when the oil level shakes violently, such as in a cartridge tank of petroleum equipment, the display changes drastically and the light repeatedly turns on and off. The problem was that it was hard to see and it was difficult to determine the amount of oil.
問題点を解決するための手段
上記問題点を解決するために本発明の油量計は、油量を
検出する検出手段と、油量を表示する表示装置を有し、
前記表示装置で表示している内容を記憶している表示記
憶装置を設け、前記表示記憶装置の出力と前記検出手段
の出力を比較処理し、前記表示装置に出力する比較手段
を有し、前記比較手段は、検出手段の出力油量から表示
記憶装置の出力油量を減算する減算手段と、予め定めら
れた定数を記憶している定数記憶装置を有し、前記減算
手段の減算結果が正の場合に減算結果と前記定数記憶装
置の内容を比較する比較器を設け、前記定数記憶装置の
内容の方が大きい場合には表示記憶装置の出力を、減算
結果の方が大きい場合と減算結果が零又は負の場合には
検出手段の出力を表示装置に出力する構成としたもので
ある。Means for Solving the Problems In order to solve the above problems, the oil level gauge of the present invention includes a detection means for detecting the oil level, and a display device for displaying the oil level.
a display storage device for storing content displayed on the display device; a comparing device for comparing the output of the display storage device and the output of the detection device and outputting the result to the display device; The comparison means has a subtraction means for subtracting the output oil amount of the display storage device from the output oil amount of the detection means, and a constant storage device that stores a predetermined constant, and the comparison means has a subtraction means that subtracts the output oil amount of the display storage device from the output oil amount of the detection means, and a constant storage device that stores a predetermined constant. A comparator is provided to compare the result of subtraction with the contents of the constant storage device, and if the content of the constant storage device is larger, the output of the display storage device is displayed, and if the result of subtraction is larger, the output of the storage device is displayed. When is zero or negative, the output of the detection means is output to the display device.
作 用
本発明は上記した構成によって、表示記憶装置の出力と
検出手段の出力を比較し補正して表示装置に出力するの
で、表示が激しく変わらず見安くすることが可能である
。Function: With the above-described configuration, the present invention compares and corrects the output of the display storage device and the output of the detection means and outputs the corrected data to the display device, so that the display can be easily viewed without changing drastically.
実施例 以下本発明の実施例を添付図面にもとづいて説明する。Example Embodiments of the present invention will be described below based on the accompanying drawings.
第１図において３は液位を検出する検出手段であり、４
は液位を表示する表示装置であり、３７は現在の表示内
容を記憶している表示記憶装置である。３８は検出手段
３の出力と表示記憶装置３７の内容を比較処理する比較
手段であり、減算手段３９、定数記憶装置４０、比較器
４１よυ構成しているものである。検出手段３の出力液
位Ｈ１、表示記憶装置３７が記憶している液位をＨ２と
すると、減算手段３９は△Ｈ＝Ｈ１−Ｈ２の演算を行な
う。出力≦Ｏの場合、即ち検出手段３の出力液位が表示
記憶装置３７の記憶する液位より低い場合には、比較手
段３８は検出手段３の出力液位Ｈ１を表示装置４に出力
する。減算手段３９の出力△Ｈ＞Ｏの場合は、比較器４
１が定数記憶装置４０の記憶している内容である△Ｈ′
と、△Ｈを比較し、△Ｈ’ ＞△Ｈならば比較手段３８
は表示記憶装置３７の内容Ｈ２を表示装置４に出力し、
△Ｈ’＜△Ｈならば比較手段３８は検出手段３の出力液
位Ｈ１を表示装置４に出力する。表示装置４は比較手段
３８の出力に応じた表示を行ない表示記憶装置３７に表
示内容を出力するものである。以上の動作の流れを第２
図の流れ図に示す。石油機器のカートリッジタンクの油
量を表示するような場合には、通常使用時には給油をし
ない限り油量が増加することはないのでＯ〈△Ｈ〈△Ｈ
’となるのは油面の揺れによるものであり、その時には
検出液位Ｈ１には無関係にＨ２の表示を続行するもので
ある。In FIG. 1, 3 is a detection means for detecting the liquid level;
3 is a display device that displays the liquid level, and 37 is a display storage device that stores the current display contents. Comparison means 38 compares the output of the detection means 3 and the contents of the display storage device 37, and is composed of a subtraction means 39, a constant storage device 40, and a comparator 41. Assuming that the output liquid level H1 of the detection means 3 and the liquid level stored in the display storage device 37 is H2, the subtraction means 39 calculates ΔH=H1-H2. When output≦O, that is, when the output liquid level of the detection means 3 is lower than the liquid level stored in the display storage device 37, the comparison means 38 outputs the output liquid level H1 of the detection means 3 to the display device 4. If the output △H>O of the subtraction means 39, the comparator 4
1 is the content stored in the constant storage device 40 △H′
and △H, and if △H'> △H, comparison means 38
outputs the content H2 of the display storage device 37 to the display device 4,
If ΔH'<ΔH, the comparing means 38 outputs the output liquid level H1 of the detecting means 3 to the display device 4. The display device 4 performs a display according to the output of the comparing means 38 and outputs the display contents to the display storage device 37. The flow of the above operation is explained in the second section.
The flowchart shown in Figure. When displaying the amount of oil in the cartridge tank of petroleum equipment, O〈△H〈△H
' is due to fluctuations in the oil level, and at that time, H2 continues to be displayed regardless of the detected liquid level H1.
△Ｈ≦Ｏは油量の減少と判断し、又△Ｈ〉へＨ′は給油
による油量の増加と判断して検出液位Ｈ１を表示してい
る。次に具体的な回路図を第３図に示す。４２はマイコ
ンで′あり、内部には表示記憶装置３７、比較手段３８
、減算手段３９．定数記憶装置４０、比較器４１を持っ
ている。検出手段３は従来の技術で記述したものにＡＤ
変換のだめの抵抗４３〜５０と比較器５１を付加したも
のである。これにより液位に応じた出力電圧はＡＤ変換
されマイコン４２の中の比較手段３８に入力される。以
下比較手段３８の動作は前述同様である。ΔH≦O is determined to be a decrease in the oil amount, and ΔH>H' is determined to be an increase in the oil amount due to refueling, and the detected liquid level H1 is displayed. Next, a specific circuit diagram is shown in FIG. 42 is a microcomputer, which includes a display storage device 37 and a comparison means 38.
, subtraction means 39. It has a constant storage device 40 and a comparator 41. The detection means 3 is AD
This circuit includes additional resistances 43 to 50 for conversion and a comparator 51. As a result, the output voltage corresponding to the liquid level is AD converted and inputted to the comparison means 38 in the microcomputer 42. The operation of the comparison means 38 is the same as described above.
発明の効果
以上のように本発明の油量計によれば次の効果が得られ
る。Effects of the Invention As described above, the oil level gauge of the present invention provides the following effects.
（１） 液位を検出する検出手段の出力と表示内容を
記憶する表示記憶装置の内容を比較処理して表示するの
で液面が揺れると表示が激しく変化することがないので
使用者は表示が見安くなる。(1) Since the output of the detection means that detects the liquid level and the contents of the display storage device that stores the display contents are compared and displayed, the display does not change drastically when the liquid level fluctuates, so the user can easily see the display. Looks cheaper.
（２）検出手段と表示装置の間に比較手段を設けたこと
により安全性、信頼性の向上を図ることが可能である。(2) Safety and reliability can be improved by providing comparison means between the detection means and the display device.
第１図は本発明の一実施例を示す油量計のブロツク図、
第２図は同油量計の動作を示す流れ図、第３図は同油量
計の回路図、第４図は従来例の油量計の回路図である。
３・・・・・・検出平部、４・・・・・・表示装置、３
７・・・・・・表示艶憶装置、３８・・・・・・比較手
段、３９・・・・・・減算手段、４０・・・・・・定数
記憶装置、４１・・・・・・比較器。
代理人の氏名 弁理士 中 尾 敏 男 ほか１名３−
一一杖出千没
４−一一表ホ挾又
４１−−一比較巻
第２図
ｒ−−一−−一−−＠FIG. 1 is a block diagram of an oil gauge showing an embodiment of the present invention.
FIG. 2 is a flowchart showing the operation of the same oil level gauge, FIG. 3 is a circuit diagram of the same oil level gauge, and FIG. 4 is a circuit diagram of a conventional oil level gauge. 3...Detection flat part, 4...Display device, 3
7...Display gloss storage device, 38...Comparison means, 39...Subtraction means, 40...Constant storage device, 41... Comparator. Name of agent: Patent attorney Toshio Nakao and 1 other person3-
11 cane appearance 4-11 table ho 41--1 comparison volume 2nd figure r--1--1--@
Claims (1)
装置を有し、前記表示装置で表示している内容を記憶し
ている表示記憶装置を設け、前記表示記憶装置の内容と
前記検出手段の出力を比較処理し、前記表示装置に出力
する比較手段を有し、前記比較手段は、検出手段の出力
油量から表示記憶装置の出力油量を減算する減算手段と
、予め定められた定数を記憶している定数記憶装置を有
し、前記減算手段の減算結果が正の場合に減算結果と前
記定数記憶装置の内容を比較する比較器を設け、前記定
数記憶装置の内容の方が大きい場合には表示記憶装置の
出力を、減算結果の方が大きい場合と減算結果が零又は
負の場合には検出手段の出力を表示装置に出力する構成
とした油量計。(1) A display storage device having a detection means for detecting the oil amount and a display device for displaying the oil amount and storing the content displayed on the display device is provided, and the content of the display storage device is provided. The comparison means compares the output of the detection means and outputs the result to the display device, and the comparison means includes a subtraction means for subtracting the output oil amount of the display storage device from the output oil amount of the detection means, and a predetermined amount. a constant storage device that stores a constant obtained by the subtraction means; a comparator that compares the subtraction result with the contents of the constant storage device when the subtraction result of the subtraction means is positive; If the subtraction result is larger, the output of the display storage device is outputted, and if the subtraction result is zero or negative, the output of the detection means is outputted to the display device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60139325A JPS61296216A (en) | 1985-06-25 | 1985-06-25 | Oil gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60139325A JPS61296216A (en) | 1985-06-25 | 1985-06-25 | Oil gauge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61296216A true JPS61296216A (en) | 1986-12-27 |
Family
ID=15242680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60139325A Pending JPS61296216A (en) | 1985-06-25 | 1985-06-25 | Oil gauge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61296216A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63208721A (en) * | 1987-02-24 | 1988-08-30 | Noritsu Co Ltd | Setting device for bathtub water level |
-
1985
- 1985-06-25 JP JP60139325A patent/JPS61296216A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63208721A (en) * | 1987-02-24 | 1988-08-30 | Noritsu Co Ltd | Setting device for bathtub water level |
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