JPS59166840A - Viscosity detector - Google Patents
Viscosity detectorInfo
- Publication number
- JPS59166840A JPS59166840A JP4005183A JP4005183A JPS59166840A JP S59166840 A JPS59166840 A JP S59166840A JP 4005183 A JP4005183 A JP 4005183A JP 4005183 A JP4005183 A JP 4005183A JP S59166840 A JPS59166840 A JP S59166840A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- oil
- tuning fork
- alarm
- output
- 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
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
- G01N11/10—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material
- G01N11/16—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material by measuring damping effect upon oscillatory body
Abstract
Description
【発明の詳細な説明】
本発明はオイルタンクを有する機械に設置しオイルの粘
度全検出する粘度検出器に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a viscosity detector installed in a machine having an oil tank to detect the entire viscosity of oil.
従来工作機械や目動単等のオイルは目視等によりその劣
化状態を確認するか又は定期的Ｖｃ１５５侯する方法を
採っており定量的数値に基すいての交換は行なわれてい
なかった。このため、十分使用可能状態にあるにもかか
わらず５ｊ：換したシ、劣化しり状態のまま便用して機
械等の寿命を紬めるなどの問題があった◎
本発明は上記従来の問題点の抜書を目的とするものであ
シ、オイルの劣化状態を常に監視し定量値に基すいてオ
イルの交換時期を明示する粘度検出器を提供するもので
ある。Conventionally, the deterioration state of the oil in machine tools and automatic motors was checked by visual inspection or periodically checked by Vc155, and the oil was not replaced based on quantitative values. For this reason, there were problems such as shortening the service life of machines, etc. by replacing them even though they were in a fully usable state, or by using them in a deteriorated state.◎ The present invention solves the above-mentioned conventional problems. The object of the present invention is to provide a viscosity detector that constantly monitors the deterioration state of oil and indicates when to replace the oil based on quantitative values.
本発明はオイルタンクの中に設置された圧電素子を有す
るセンサ部と、該センサ部と電気的に接続され、且つオ
イル及びオイルタンクと電気的に絶縁された発振回路、
基準周波数発生回路、該発振回路の出力を一方の入力と
し該基準周波数発生回路の出力をもう一方の入力とする
ミキシング回路、該周波数判定回路の出力を入力とする
アラーム回路からなる粘度検出器に関する。The present invention includes a sensor section having a piezoelectric element installed in an oil tank, an oscillation circuit electrically connected to the sensor section, and electrically insulated from the oil and the oil tank;
A viscosity detector comprising a reference frequency generating circuit, a mixing circuit having one input of the output of the oscillation circuit and the other input of the reference frequency generating circuit, and an alarm circuit having the output of the frequency determination circuit as input. .
本発明は圧電素子を使用した発振回路において、その発
振周波数が圧電素子を有する振動体が浸漬されている物
質の粘度により変化することを利用したものである。The present invention utilizes the fact that, in an oscillation circuit using a piezoelectric element, the oscillation frequency changes depending on the viscosity of the substance in which the vibrating body having the piezoelectric element is immersed.
次に本発明の実施例について図面を参照して説明する。Next, embodiments of the present invention will be described with reference to the drawings.
第１図は本発明による一実施例のブロツ図である。第１
図に於いて１はオイルタンク、２はオイル−３は圧電素
子をＭするセンサ部、４は温度センサ、５は発振回路、
６は基準局Ｖ数発生回路、７はミキシング回路、８はア
ラーム回路、１４はアラーム送出端子である。第２図は
センサ部の一実施列を示したもので、９は音さ・ １０
は圧電素子、１１及び１２は電極を示す。第３図はセン
サ部を装着したオイルタンクの断面図全示し、第１図と
同様に１はオイルタンク、２はオイル、３はセンサ部、
１３は接続ケーブルを示す０次に図を用いて動作を説明
する。４１図及び第３図に示す如くセンサ部の音さ９は
オイル２に浸漬されており、この音さに取付けられた圧
、電素子ｌＯは接続ケーブル１３により発振回路５に接
続される。この時の発振周波数は音さによって決定され
るが音さのまわシの物質の粘度によっテ変化することは
衆知の事実である０
久に発振回路５の出力はミキシング回路７に入力される
。また、ミキシング回路７には基準周波数発生回路６の
出力が入力され、この２つの入力を比較しその差を８に
出力する。このとき基準周波数発生回路６には温度セン
サ４からの信号が入力されておシ、オイルの温度にニジ
補正した基準周波数が７に送出される。８はミキシング
回路からのデータが基準値より大きくなるとアラーム全
アラーム送出端子１４に送出する。このとき温度センナ
からの出力によシアラーム送出を制御するようにすれは
、低温動作時における粘度の低下によるアラームの送出
を防ぐことができる。FIG. 1 is a block diagram of an embodiment according to the present invention. 1st
In the figure, 1 is an oil tank, 2 is oil, 3 is a sensor unit for piezoelectric element, 4 is a temperature sensor, 5 is an oscillation circuit,
6 is a reference station V number generation circuit, 7 is a mixing circuit, 8 is an alarm circuit, and 14 is an alarm sending terminal. Figure 2 shows one row of sensor parts, where 9 is a tuning fork and 10 is a row of sensors.
indicates a piezoelectric element, and 11 and 12 indicate electrodes. FIG. 3 shows a complete cross-sectional view of the oil tank equipped with the sensor section, and as in FIG. 1, 1 is the oil tank, 2 is oil, 3 is the sensor section,
Reference numeral 13 indicates a connection cable.The operation will be explained using the following diagram. As shown in FIGS. 41 and 3, the tone tip 9 of the sensor section is immersed in oil 2, and the pressure and electric element IO attached to this tone tip is connected to the oscillation circuit 5 by a connecting cable 13. The oscillation frequency at this time is determined by the tuning fork, but it is a well-known fact that it changes depending on the viscosity of the material around which the tuning fork is wound.The output of the oscillation circuit 5 is input to the mixing circuit 7. . Further, the output of the reference frequency generation circuit 6 is inputted to the mixing circuit 7, and the two inputs are compared and the difference is outputted to the mixing circuit 8. At this time, a signal from the temperature sensor 4 is input to the reference frequency generating circuit 6, and a reference frequency corrected for the oil temperature is sent to the reference frequency generating circuit 7. 8 sends an alarm to the all alarm sending terminal 14 when the data from the mixing circuit becomes larger than the reference value. At this time, by controlling the transmission of the sea alarm by the output from the temperature sensor, it is possible to prevent the transmission of an alarm due to a decrease in viscosity during low-temperature operation.
以上説明した如く、オイルの劣化していない状態での音
さ型発振回路の発振周波数とオイルの劣化が進み粘度が
高くなった状態での発振周波数との相違を検出すること
によ勺オイルの粘度の変化が検出できる０例えば自動車
等のエンジンオイルの場合、オイルの種類は多くらるが
エンジンに対しては粘度の劣化が変換の目安となり、こ
のことは、晋さ型発振回路の発振周波数の変化を読みと
ることに他ならない。このようにオイルに浸漬された音
さの発振周波数′ｔ−監視することによりオイルの変換
時期全定量的に把握することが可能である。As explained above, by detecting the difference between the oscillation frequency of the tuning fork oscillator circuit when the oil has not deteriorated and the oscillation frequency when the oil has deteriorated and its viscosity has increased, Changes in viscosity can be detected 0 For example, in the case of engine oil for automobiles, there are many types of oil, but for engines, the deterioration of viscosity is a guideline for conversion, and this means that the oscillation frequency of the Shinsa-type oscillation circuit It is all about reading changes in By monitoring the oscillation frequency 't of the tuning fork immersed in oil in this manner, it is possible to quantitatively determine the oil conversion timing.
このような回路は個々のＩＣ等を使用して回路構成する
ことができるが、マイクロコンピュータ等を用いれば小
型で軸度のよい粘度検出器を一層容易に構成することが
できる。Although such a circuit can be constructed using individual ICs, etc., a small viscosity detector with good axiality can be constructed even more easily by using a microcomputer or the like.
本発明は以上説明したように圧′ｆＩＬ素子全便用した
発振回路の周波数を監視することによりオイルの変換時
期を定量的に把握し、外部に知らしめることが可能とな
るため、早めのオイル交侯によるオイルの無駄又は交換
時期遅れによる機械の損耗を防止するのに著しい効果が
ある。As explained above, the present invention makes it possible to quantitatively grasp the oil change timing by monitoring the frequency of the oscillation circuit that uses all of the pressure IL elements, and to inform the outside of the oil change period. This is extremely effective in preventing machine wear and tear due to oil wastage or delayed oil replacement.
第１図は本発明の１実施例の回路ブロック図、第２図は
第１図に示した圧電素子をＭするセンサ部−実施例の外
観図、第３図は第２図に示したセンサ部をオイルタンク
に取付けた場合の断面図を示す。
ｌ・・・・・・オイルタンク、２・・・・・・オイル、
３・・・・・・圧電素子を肩するセンサ部、４・・・・
・・温度センサ、５・・・・・・発振回路、６・・・・
・・基準周波数発生回路、７・・・・・・ミキシング回
路、８・・・・・・アラーム回路、９・・・・・・音さ
、１０・・・・・・圧電素子、１１および１２・・・・
・・電極、１３・・・・・・接続ケーブル、１４・・・
・・・アラーム送出端子。
第２凶Fig. 1 is a circuit block diagram of one embodiment of the present invention, Fig. 2 is an external view of the sensor section-embodiment that uses the piezoelectric element shown in Fig. 1, and Fig. 3 is the sensor shown in Fig. 2. A cross-sectional view of the part installed in the oil tank is shown. l...Oil tank, 2...Oil,
3...Sensor part that shoulders the piezoelectric element, 4...
...Temperature sensor, 5...Oscillation circuit, 6...
...Reference frequency generation circuit, 7...Mixing circuit, 8...Alarm circuit, 9...Tone fork, 10...Piezoelectric element, 11 and 12・・・・・・
...Electrode, 13...Connection cable, 14...
...Alarm sending terminal. Second evil
Claims (1)
センサ部と該センナ部と電気的接続され、且つ該オイル
タンク及びオイルと電気的に絶縁された発振回路、基準
周波数発生回路、該発振回路の出力音一方の入力とし該
基準周波数発生回路の出力をもう一方の入力とするミキ
シング回路、鈑ミキシング回路の出力を入力とするアラ
ーム回路からなる粘度検出器。A sensor unit having a pressure regulator installed in an oil tank, an oscillation circuit electrically connected to the sensor unit and electrically insulated from the oil tank and oil, a reference frequency generation circuit, and the oscillation circuit. A viscosity detector comprising a mixing circuit whose output sound is one input and the output of the reference frequency generating circuit as the other input, and an alarm circuit whose input is the output of the plate mixing circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4005183A JPS59166840A (en) | 1983-03-11 | 1983-03-11 | Viscosity detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4005183A JPS59166840A (en) | 1983-03-11 | 1983-03-11 | Viscosity detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS59166840A true JPS59166840A (en) | 1984-09-20 |
Family
ID=12570108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4005183A Pending JPS59166840A (en) | 1983-03-11 | 1983-03-11 | Viscosity detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59166840A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61158442U (en) * | 1985-03-25 | 1986-10-01 | ||
| US4729237A (en) * | 1985-12-12 | 1988-03-08 | Chichibu Cement Kabushiki Kaisha | Tuning fork vibration-type viscosity measuring apparatus |
| US4754640A (en) * | 1987-03-17 | 1988-07-05 | National Metal And Refining Company, Ltd. | Apparatus and method for determining the viscoelasticity of liquids |
| EP1021711A2 (en) * | 1996-10-09 | 2000-07-26 | Symyx Technologies | Systems and methods for characterization of materials and combinatorial libraries with mechanical oscillators |
-
1983
- 1983-03-11 JP JP4005183A patent/JPS59166840A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61158442U (en) * | 1985-03-25 | 1986-10-01 | ||
| US4729237A (en) * | 1985-12-12 | 1988-03-08 | Chichibu Cement Kabushiki Kaisha | Tuning fork vibration-type viscosity measuring apparatus |
| US4754640A (en) * | 1987-03-17 | 1988-07-05 | National Metal And Refining Company, Ltd. | Apparatus and method for determining the viscoelasticity of liquids |
| EP1021711A2 (en) * | 1996-10-09 | 2000-07-26 | Symyx Technologies | Systems and methods for characterization of materials and combinatorial libraries with mechanical oscillators |
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