CN201796001U - Oil quality detector - Google Patents
Oil quality detector Download PDFInfo
- Publication number
- CN201796001U CN201796001U CN2010202341328U CN201020234132U CN201796001U CN 201796001 U CN201796001 U CN 201796001U CN 2010202341328 U CN2010202341328 U CN 2010202341328U CN 201020234132 U CN201020234132 U CN 201020234132U CN 201796001 U CN201796001 U CN 201796001U
- Authority
- CN
- China
- Prior art keywords
- oil
- resistance
- oil quality
- operational amplifier
- potentiometer
- 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
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Abstract
The utility model relates to the technical field of oil quality detection, in particular to an oil quality detector. At present, oil quality detectors in domestic and aboard markets adopt a comparative method to detect pollution value and water content of detected oil, clean oil is required to realize zero setting every time, and accordingly labor, time and oil are wasted. The utility model provides the oil quality detector and a detection method, the detector comprises a sensor, a capacitor, a voltage converter, an operational amplifier and a single chip microcomputer CPU, the capacitor and the voltage converter are connected with an oscillation circuit, the oscillation circuit is connected with the operational amplifier and the single chip microcomputer CPU, and the single chip microcomputer CPU is connected with a memory and an external device. The oil quality detector basically overcomes defects in a common detection method, not only saves labor, time and oil, but also resolves errors caused by change of indexes of the clean oil, and realizes fast, accurate and reliable detection truly.
Description
Technical field
The utility model relates to a kind of oil quality detection technique field, is specifically related to a kind of oil quality detector.
Background technology
The detection method of fluid mass detecting instrument is to adopt pairing comparision to detect the soiling value and the water cut of tested oil product on the domestic and international market at present.
Present detection method is:
1, at first will splash into the sensor oil pocket in the clean oil of measured oil bucket model, regulate zero point by zero potentiometer, the displayed value that makes oil quality detector is zero (in order to guarantee the reliable of zero point, usually to need to confirm several times repeatedly zero point, thereby make manipulate loaded down with trivial details, test period lengthening).
2, cleaning sensor oil pocket splashes into measured oil again in the sensor oil pocket, and this moment, the displayed value of instrument was the soiling value of measured value.The method of testing of the mensuration of water cut and soiling value is basic identical in the fluid.
3, generally, in order to ensure the accuracy of measured value, need repeated test 3 times, and all will return to zero at every turn, take a lot of work, time-consuming, excessive fuel consumption with clean oil.
4, the clean oil of zeroing use must be and the same one barrel of oil of disclosing of buying goods wholesale and buying of measured oil.Because the consistance of oil is relatively poor, with a collection of oil, not same bucket, its index also has a difference.If be not both same batch of oil, although producer, the trade mark are all the same, it is just bigger that its index differs, accuracy in order to ensure measured oil contamination index, requirement measured oil and zeroing oil are same batch oil, and the user is in order to test the oil product soiling value like this, and product must keep sample, and after sample oil deposited certain hour, its index also can change.
Experimental results show that: the sample oil resting period is long more, and its index changes more greatly.If it is improper to deposit, be subjected to the oxidation of air after, index changes just bigger.So both be exactly same batch clean oil zeroing, because the clean oil of this moment is not the clean oil that is added at first in the equipment, it is also just variant to detect soiling value at last.It is just not too accurate that strictness is changed oil by matter.
The utility model content
The utility model provides a kind of oil quality detector, with solve fluid detection method that prior art exists manipulate loaded down with trivial details, test period lengthening, the problem that effect is relatively poor.
In order to solve the problem that prior art exists, the technical solution adopted in the utility model is:
A kind of oil quality detector, comprise sensor 1, electric capacity, electric pressure converter 2, operational amplifier 4, singlechip CPU 7 is formed, it is characterized in that: described electric capacity, electric pressure converter 2 are connected with oscillating circuit 3, and oscillating circuit 3 is connected with singlechip CPU 7 with operational amplifier 4, and singlechip CPU 7 is connected with external device with storer 10.
Above-mentioned oscillating circuit 3 comprises resistance R 1, resistance R 2 resistance and R3, potentiometer W1, digital regulation resistance W2 and potentiometer W3.
Above-mentioned resistance R 1 is connected with potentiometer W1, potentiometer W1 is connected with resistance R 2 with 2 pin of operational amplifier 4, and resistance R 2 is connected with power supply, and resistance R 3 is connected with digital regulation resistance W2, digital regulation resistance W2 is connected with 3 pin, singlechip CPU 7 and the potentiometer W3 of operational amplifier 4, and potentiometer W3 connects power supply.
Above-mentioned external device is keyboard 8, display screen 9.
Compared with prior art, advantage of the present utility model is as follows:
The utility model has fundamentally solved the drawback that exists in the common detection method, not only the saving of labor, save time, fuel-efficient, and solve the clean oil index and change the error of bringing, really accomplish fast, accurately, reliable detection.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the utility model structured flowchart;
The 1-sensor, 2-electric capacity, electric pressure converter, 3-oscillating circuit, 4-operational amplifier, 5-wave filter, 6-digital to analog converter, 7-singlechip CPU, 8-keyboard, 9-display screen, 10-storer.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in detail.
A kind of oil quality detector, comprise sensor 1, capacitance voltage converter 2, operational amplifier 4, singlechip CPU 7 is formed, described electric capacity, electric pressure converter 2 is connected with oscillating circuit 3, oscillating circuit 3 is connected with singlechip CPU 7 with operational amplifier 4, singlechip CPU 7 is passed through memory circuit, input circuit and output circuit and storer 10, keyboard 8 is connected with display screen 9, described oscillating circuit 3 comprises resistance R 1, resistance R 2 resistance and R3, potentiometer W1, digital regulation resistance W2 and potentiometer W3, resistance R 1 is connected with potentiometer W1, and potentiometer W1 is connected with resistance R 2 with 2 pin of operational amplifier 4, resistance R 2 is connected with power supply, resistance R 3 is connected with digital regulation resistance W2,3 pin of digital regulation resistance W2 and operational amplifier 4, singlechip CPU 7 is connected with potentiometer W3, and potentiometer W3 connects power supply.
The basic capacitor C that electric capacity, electric pressure converter 2 collect sensor 1
1With reference capacitance C
2The linear respectively d. c. voltage signal that converts to.The basis capacitor C
1The output voltage of conversion is through R
1, R
2, potentiometer W
1Obtain a suitable voltage U after the adjusting
2After, deliver to the 2nd pin of operational amplifier 4.Reference capacitance C
2The output voltage of conversion is through R
3, digital zero setting potentiometer W
2, potentiometer W3 obtains a suitable voltage U after regulating
3, deliver to the 3rd pin of amplifier through digital regulation resistance W2.Is zero with digital regulation resistance W2 being set at the initial resistance resistance value, i.e. potentiometer W
3Voltage directly deliver to the 3rd pin.The input end of operational amplifier 4 is differential input U
2-U
3When not draining the oil in the sensor, pass through W
1And W
3Adjustment, make U
2-U
3=0, promptly instrument original state displayed value is zero.
The course of work: earlier the clean oil with tested contaminated oil returns to zero, when the clean oil that is about to tested contaminated oil splashes into oil pocket, and U
2A voltage increment is arranged, make U
2-U
3≠ 0, operational amplifier 4 has output voltage △ U, and through wave filter 5, behind the digital to analog converter 6,7 control figure potentiometer W2 make U by singlechip CPU
3Also produce a voltage and increase △ U
3=△ U
2, make △ U
2-△ U
3=0, being input as of operational amplifier 4 is zero, and promptly instrument is shown as zero, thereby has reached the purpose of automatic zero set (AZS).Put into tested contaminated oil, U to oil pocket then
2A voltage increment △ U is arranged again
2, U
3Voltage is constant, U
2-U
3=△ U
2, this voltage is shown on the display device after singlechip CPU 7 computings through operational amplifier 4, wave filter 5, digital to analog converter 6, and this value is exactly the soiling value of measured oil.
A kind of method of operating method of oil quality detector may further comprise the steps:
The memory at step 1, sample oil zero point, the clean lubricating oil that at first will add equipment is placed on the oil quality detector and returns to zero, and after determining zero point the oil in the oil pocket is cleaned up;
Step 2, note sensor for the numerical value on the unloaded display down to CPU, because different types of clean oil, after again the oil of oil pocket being cleaned up after the zeroing, display has different numerical value, like this with institute's oil to be measured after clean oil zeroing, corresponding to the record one by one of the numerical value under the zero load, and number one by one by memory circuit and write in the singlechip CPU 7;
Step 4, this moment, singlechip CPU 7 obtained data, and simultaneously singlechip CPU 7 finds the numerical value of corresponding clean oil quiescent value when being zero point, and both subtract each other soiling value, the water percentage that can obtain measured oil.
Claims (3)
1. oil quality detector, comprise sensor (1), electric capacity, electric pressure converter (2), operational amplifier (4), singlechip CPU (7), it is characterized in that: described electric capacity, electric pressure converter (2) are connected with oscillating circuit (3), and oscillating circuit (3) is connected with singlechip CPU (7) with operational amplifier (4), and singlechip CPU (7) is connected with external device with storer (10).
2. oil quality detector according to claim 1 is characterized in that: described oscillating circuit (3) comprises resistance R 1, resistance R 2 resistance and R3, potentiometer W1, digital regulation resistance W2 and potentiometer W3; Resistance R 1 is connected with potentiometer W1, potentiometer W1 is connected with resistance R 2 with 2 pin of operational amplifier 4, and resistance R 2 is connected with power supply, and resistance R 3 is connected with digital regulation resistance W2, digital regulation resistance W2 is connected with 3 pin, singlechip CPU 7 and the potentiometer W3 of operational amplifier 4, and potentiometer W3 connects power supply.
3. oil quality detector according to claim 1 is characterized in that: described external device is keyboard (8), display screen (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202341328U CN201796001U (en) | 2010-06-23 | 2010-06-23 | Oil quality detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202341328U CN201796001U (en) | 2010-06-23 | 2010-06-23 | Oil quality detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201796001U true CN201796001U (en) | 2011-04-13 |
Family
ID=43850907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202341328U Expired - Fee Related CN201796001U (en) | 2010-06-23 | 2010-06-23 | Oil quality detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201796001U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102297890A (en) * | 2010-06-23 | 2011-12-28 | 西安天厚电子技术有限责任公司 | Oil quality detector and detection method |
| CN109870485A (en) * | 2019-03-19 | 2019-06-11 | 闫朝恩 | A kind of lubricating oil water content detection device |
-
2010
- 2010-06-23 CN CN2010202341328U patent/CN201796001U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102297890A (en) * | 2010-06-23 | 2011-12-28 | 西安天厚电子技术有限责任公司 | Oil quality detector and detection method |
| CN102297890B (en) * | 2010-06-23 | 2016-04-27 | 西安天厚电子技术有限责任公司 | Oil quality detection instrument and detection method |
| CN109870485A (en) * | 2019-03-19 | 2019-06-11 | 闫朝恩 | A kind of lubricating oil water content detection device |
| CN109870485B (en) * | 2019-03-19 | 2021-04-16 | 山东腾辉润滑油科技有限公司 | Lubricating oil moisture content check out test set |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110413 Termination date: 20130623 |