CN1442689A - Gasoline octane value detecting apparatus - Google Patents
Gasoline octane value detecting apparatus Download PDFInfo
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- CN1442689A CN1442689A CN 03103291 CN03103291A CN1442689A CN 1442689 A CN1442689 A CN 1442689A CN 03103291 CN03103291 CN 03103291 CN 03103291 A CN03103291 A CN 03103291A CN 1442689 A CN1442689 A CN 1442689A
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- Prior art keywords
- pin
- connects
- resistance
- chip
- tcl555
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
A detector for the octane value of gasoline is composed of a sensor's signal converter (C/F) using TLC 555 as oscillator, a frequency divider using CD4017, and single-chip computer system. Its advantages are small size, low cost, high speed (0.01s), high precision (+/-0.5), and less sampling of gasoline.
Description
Affiliated technical field
The present invention relates to a kind of fuel oil detecting instrument, particularly relate to a kind of detecting instrument of octane number.
Background technology
Octane value is the important indicator of expression gasoline knock rating, and knock rating is good more, high more (1998 the 3rd phases of Chinese technical supervision: 43) of octane value.What of octane number have just formed the trade mark of this gasoline.The detection method of octane number mainly contains two kinds at present: promptly motor method (MON) and organon (RON) are two kinds.International standard detection method (MON method) is to start aircraft measurements at the CFR of the U.S..The gasoline standard specimen at China national Bureau of Technical Supervision standard specimen center also starts aircraft measurements at CFR.In recent years, some new detection methods (RON method) are disclosed, such as using Raman spectrometry, infra-red sepectrometry, nuclear magnetic resonance spectroscopy etc., its measuring accuracy is all in ± 0.7 label (octane value) (1997 the 4th phases of modern metrology and measurement: 37～40; Yunnan University's journal 1999,21 (4): 292～293), the characteristics of these methods be equipment price costliness, bulky, analysis time long, be not easy to move, be awkward, can not be at storage tank, the refuelling station is on-the-spot detects; The CFR engine easily produces electric spark, noise is big; Detection with oil mass greatly, not environmental protection, to very inconvenience of daily quality of gasoline supervision, and should not promote.
Summary of the invention
Cost an arm and a leg in order to overcome existing octane number detector, bulky, analysis time is long, be not easy to move, be awkward, can not be in storage tank, the on-the-spot deficiency that detects in refuelling station, the invention provides a kind of octane number detector, this detector can satisfy avoids above shortcoming, instrument small and exquisite portable, easy to operate, detection time is short, it is dangerous not have the electricity fire, suitable on-the-spot the detection.
The technical solution adopted for the present invention to solve the technical problems is: detect capacitor C
xOne end ground connection, an other end and R
2Resistance is connected, and connects 2.6 pin of TCL555; Resistance R
2With resistance R
1Go here and there, and connect 7 pin of TCL555; Resistance R
1W connects with adjustable resistance, and connects the positive pole of power supply.Capacitor C
1One end ground connection, 5 pin of another termination TCL555,1 pin of TCL555 is ground connection also, and 3 pin connect the CLK end of CD4017 (left side) chip; The CLR of CD4017 (left side) chip meets the P of 89C52
1.4Pin, EN meet the P of 89C52
1.5Pin, CO meet the T of 89C52
0Pin, Y
0, Y
1... Y
9Pin meets the I of CD4017 (right side) chip
0, I
1... I
9Pin; The Y of CD4017 (right side) chip
0, Y
1, Y
2, Y
3Pin meets the P of 89C52
1.0, P
1.1, P
1.2, P
1.3Pin.
Said detection capacitor C
xBe by the nested capacitance component that constitutes of the stainless-steel tube of two different-diameters, interior ring 1 and outer shroud 2 usefulness insulating gels are 3 fixing on the top, and outer shroud 2 connects positive pole, and interior ring 1 connects negative pole.
With the DIELECTRIC CONSTANT of test using capacitance sensor gasoline, utilize the linear relationship between DIELECTRIC CONSTANT and the octane value, its detection mathematical model is:
Y
Octane value=K * (C
x-C
0)+B
0
f＝1.43/(W+R
1+2R
2)×C
x，
Wherein, Y
Octane valueBe octane value, f is the crystal oscillator of single-chip microcomputer, W, R
1, R
2Be the resistance of testing circuit, K is the slope of straight line, B
0Be the intercept of straight line, C
0It is the capacitance of sensor itself.
The invention has the beneficial effects as follows: the detecting instrument volume is little, and is portable with oneself, with low cost, and full Chinese shows, is convenient to operation.Detection time was less than 0.01 second.The design of employing single-chip microcomputer, it is dangerous not have the electricity fire, and suitable on-the-spot the detection surveyed with oil mass less than 300 milliliters.Accuracy of detection is in dual-purpose, the energy-conserving and environment-protective of ± 0.5 label (octane value) AC and DC.
The present invention is further described below in conjunction with drawings and Examples
Fig. 1 is the sensor construction synoptic diagram
Fig. 2 is testing circuit figure
Fig. 3 is a hardware elementary diagram
Among Fig. 1,1. in ring, 2. outer shroud, 3. top.
Fig. 1, Fig. 2 are one embodiment of the present of invention, sensor adopts by the nested capacitance component that constitutes of the stainless-steel tube of two different-diameters in the present embodiment, and outer shroud 2 diameters are 3cm, wall thickness 0.25cm, interior ring 1 diameter 1.5cm, wall thickness 0.25cm, between interior ring 1 and the outer shroud 2 apart from 0.5cm, inner and outer ring is 3 fixing on the top with insulating gel, the stainless steel cap is fixed on the outer shroud 2 on the top by screw thread, be used for fixing and connect electric wire usefulness, outer shroud 2 connects positive pole, and interior ring 1 connects negative pole.Testing circuit: comprising with TLC555 being the capacitance type sensor signal conversion circuit (C/F) of oscillator, is the frequency dividing circuit and the microcontroller system circuit of frequency divider with CD4017.
Along with the fast development of domestic automobile industry and the opening in oil product market, oil product of poor quality is more, and this instrument can satisfy the supervision to quality of gasoline of technical supervision department, user preferably, and can on-the-spotly in the refuelling station accurately detect fast.Therefore, this project has market outlook preferably, and application is wider, for example: technical supervision department (as standard metrology appliance), refuelling station, petroleum chemical enterprise, oil company, the user etc. that maintains the car respectively.
Claims (2)
1. an octane number detector comprises with TLC555 being the capacitance type sensor signal conversion circuit (C/F) of oscillator, is the frequency dividing circuit and the microcontroller system circuit composition of frequency divider with CD4017, it is characterized in that: detect capacitor C
xOne end ground connection, the other end and R
2Resistance is connected, and connects 2,6 pin of TCL555; Resistance R
2With resistance R
1Connect, and connect 7 pin of TCL555, resistance R
1W connects with adjustable resistance, and connects the positive pole of power supply; Power supply C
1One end ground connection, 5 pin of another termination TCL555,1 pin of TCL555 is ground connection also, and 3 pin connect the CLK end of CD4017 (left side) chip; The CLR of CD4017 (left side) chip meets the P of 89C52
1.4Pin, EN meet the T of 89C52
0Pin, Y
0, Y
1..., Y
9Pin meets the I of CD4017 (right side) chip
0, I
1..., I
9Pin; The Y of CD4017 (right side) chip
0, Y
1, Y
2, Y
3Pin meets the P of 89C52
1.0, P
1.1, P
1.2, P
1.3Pin.
2, octane number detector according to claim 1 is characterized in that: said detection capacitor C
xBe by the nested capacitance component that constitutes of the stainless-steel tube of two different-diameters, interior ring (1) and outer shroud (2) with insulating gel on the top (3) fixing, outer shroud (2) connects positive pole, interior ring (1) connects negative pole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03103291 CN1442689A (en) | 2003-01-30 | 2003-01-30 | Gasoline octane value detecting apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03103291 CN1442689A (en) | 2003-01-30 | 2003-01-30 | Gasoline octane value detecting apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1442689A true CN1442689A (en) | 2003-09-17 |
Family
ID=27796566
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03103291 Pending CN1442689A (en) | 2003-01-30 | 2003-01-30 | Gasoline octane value detecting apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1442689A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101762621A (en) * | 2008-12-24 | 2010-06-30 | 西安天厚滤清技术有限责任公司 | Gasoline tester capable of detecting octane values of methanol and ethanol simultaneously |
| CN103808910A (en) * | 2013-12-06 | 2014-05-21 | 西安天厚电子技术有限责任公司 | Portable methanol gasoline detector |
| CN104777198A (en) * | 2014-01-09 | 2015-07-15 | 宋德齐 | Differential comparison method octane value determinator |
| CN106197529A (en) * | 2015-05-04 | 2016-12-07 | 上海迪瑞工业工程有限公司 | Vehicular multifunctional oil product instrument |
-
2003
- 2003-01-30 CN CN 03103291 patent/CN1442689A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101762621A (en) * | 2008-12-24 | 2010-06-30 | 西安天厚滤清技术有限责任公司 | Gasoline tester capable of detecting octane values of methanol and ethanol simultaneously |
| CN103808910A (en) * | 2013-12-06 | 2014-05-21 | 西安天厚电子技术有限责任公司 | Portable methanol gasoline detector |
| CN104777198A (en) * | 2014-01-09 | 2015-07-15 | 宋德齐 | Differential comparison method octane value determinator |
| CN106197529A (en) * | 2015-05-04 | 2016-12-07 | 上海迪瑞工业工程有限公司 | Vehicular multifunctional oil product instrument |
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Legal Events
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |