CN102042857A - GPS (Global Position System) monitoring method for automotive fuel oil volume - Google Patents
GPS (Global Position System) monitoring method for automotive fuel oil volume Download PDFInfo
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- CN102042857A CN102042857A CN2009101972014A CN200910197201A CN102042857A CN 102042857 A CN102042857 A CN 102042857A CN 2009101972014 A CN2009101972014 A CN 2009101972014A CN 200910197201 A CN200910197201 A CN 200910197201A CN 102042857 A CN102042857 A CN 102042857A
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- fuel
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- fuel oil
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Abstract
The invention discloses a GPS (Global Position System) monitoring method for automotive fuel oil volume, wherein the oil mass digital measuring process comprises the following steps of: quantizing the volume of a fuel tank into a plurality of sections, and infusing fuel oil section by section; recording and saving the fuel oil gross and the detecting voltage data value of each section demarcation line by a microcontroller and a memorizer; comparing current liquid level voltage value VC (i) detected by a fuel meter transducer with the recorded and saved data value, judging the section to which the voltage belongs, wherein the recorded and saved data value of the corresponding section comprises: lower limit detecting voltage V (i-1), upper limit detecting voltage V (i), lower limit fuel oil volume L (i-1), upper limit fuel oil volume L (i), and the fuel tank oil mass LC (i) = L (i-1) + {L (i) - L (i-1)} * {VC (i) - V (i-1)}/ { V (i) - V (i-1)}. The method can eliminate the accumulative total error of nonlinearity calculation of the fuel tank and the transducer, and can observably improve the digital fuel meter precision of the vehicles.
Description
Technical field
The present invention relates to measurement, especially relate to a kind of vehicle fuel amount GPS method for supervising by buoy indication volume.
Background technology
In the prior art, the fuel gauge of the trapped fuel quantity in the mobile vehicle fuel case is made up of fuel oil indicator and fuel gauge sensor mostly, the fuel gauge sensor is a variable resistor by the control of float height, variation according to monitored fuel oil face height changes its resistance value, by the trapped fuel quantity in the fuel gauge indication fuel tank, fuel gauge can only show that the amount of fuel in the fuel tank accounts for the general proportions of capacity of the fuel tank.Its metering method is: with the fuel gauge sensor sensing to voltage multiply by a coefficient and estimate oil mass.The mobile vehicle fuel case inner chamber area of plane at various height is different, the linear change of liquid level face and the variation of amount of fuel are not fixed proportions in the case, and the float of fuel gauge sensor is not directly proportional with the variation of liquid level face with the output data that the liquid level face moves yet.The fuel tank measuring instrument can not reflect the actual amount of fuel in the non-linear fuel tank exactly, just is difficult to satisfy the needs that degree of precision detects and digitizing shows.
Summary of the invention
The objective of the invention is to overcome the defective of prior art, propose a kind of vehicle fuel amount GPS method for supervising that detection of energy degree of precision and digitizing show quantity of fuel oil in fuel tank.
The object of the present invention is achieved like this: a kind of vehicle fuel amount GPS method for supervising, the vertical float-type fuel gauge sensor of installing in fuel tank, the fuel gauge sensor connects the GPS monitoring communication system by A/D converter and remote monitoring center is realized digital communication, it is characterized in that the metering of oil mass numeral comprises the steps:
(1) according to the measuring accuracy requirement, capacity of the fuel tank is quantified as some sections, inject fuel oil piecemeal;
(2) write down fuel oil total amount and the fuel gauge sensor and the detected detection voltage data of the testing circuit value of preserving each segment limit by microcontroller and storer;
(3) carrying out amount of fuel when detecting, the current liquid level voltage value VC (i) that the fuel gauge sensor is detected by microcontroller compares with the data value of recorded and stored, judges the section that magnitude of voltage belongs to,
The data value that this section corresponding record is preserved comprises: it is V (i-1) that lower limit detects voltage, and it is V (i) that the upper limit detects voltage, lower limit amount of fuel L (i-1), upper limit amount of fuel L (i);
Fuel tank fuel quantity LC (i)=L (i-1)+{ L (i)-L (i-1) } * { VC (i)-V (i-1) }/{ V (i)-V (i-1) }.
The advantage of vehicle fuel amount GPS method for supervising of the present invention is: amount of fuel numeral metering method of the present invention is used micro-computer technology, the accuracy of detection of fuel gauge can be set as required, capacity of the fuel tank can be quantified as more section at timing signal, can eliminate the cumulative errors of fuel tank and sensor nonlinear computation, improve vehicle numeral fuel gauge precision significantly.Fuel tank fuel quantity has passed through A/D with analog quantity parameter and has converted digital signal to by micro-computer technology, can be used for liquid crystal display and realize remote data transmission and monitoring.The present invention can be widely used in the numeral metering of various oil tank of vehicle fuel oils.
Description of drawings
Fig. 1 is fuel tank and fuel gauge sensor construction synoptic diagram.
Embodiment
The present invention will be further described below in conjunction with the drawings and specific embodiments.
As shown in Figure 1, a kind of vehicle fuel amount GPS method for supervising, the vertical float-type fuel gauge sensor of installing in fuel tank, the fuel gauge sensor connects the GPS monitoring communication system by A/D converter and remote monitoring center is realized digital communication, it is characterized in that the metering of oil mass numeral comprises the steps:
(1) according to the measuring accuracy requirement, capacity of the fuel tank is quantified as 8 sections, inject fuel oil piecemeal;
(2) write down fuel oil total amount and the fuel gauge sensor and the detected detection voltage data of the testing circuit value of preserving each segment limit by microcontroller and storer;
Table 1: the fuel oil total amount of each segment limit and detection voltage data value
i | L(i) | V(i) |
0 | 0 |
25V |
1 | 20 |
38V |
2 | 40 |
48V |
3 | 60 |
57V |
4 | 80 |
65V |
5 | 100 |
73V |
6 | 120 |
82V |
7 | 140 |
92V |
8 | 160 |
104V |
(3) when carrying out the amount of fuel detection, the current liquid level voltage value VC (i) that the fuel gauge sensor is detected by microcontroller compares for the data value of 59V and recorded and stored, judge the 4th section that magnitude of voltage belongs to, the data value that this section corresponding record is preserved comprises: it is V (3)=57V that lower limit detects voltage, it is V (4)=65V that the upper limit detects voltage, lower limit amount of fuel L (3)=60 liter, upper limit amount of fuel L (4)=80 liter;
Fuel tank fuel quantity LC (4)=L (3)+{ L (4)-L (3) } * { VC (4)-V (3) }/{ V (4)-V (3) }=60+{80-60}*{59-57}/{ 65-57}=65 (liter).
Claims (1)
1. vehicle fuel amount GPS method for supervising, the vertical float-type fuel gauge sensor of installing in fuel tank, the fuel gauge sensor connects the GPS monitoring communication system by A/D converter and remote monitoring center is realized digital communication, it is characterized in that the metering of oil mass numeral comprises the steps:
(1) according to the measuring accuracy requirement, capacity of the fuel tank is quantified as some sections, inject fuel oil piecemeal;
(2) write down fuel oil total amount and the fuel gauge sensor and the detected detection voltage data of the testing circuit value of preserving each segment limit by microcontroller and storer;
(3) carrying out amount of fuel when detecting, the current liquid level voltage value VC (i) that the fuel gauge sensor is detected by microcontroller compares with the data value of recorded and stored, judges the section that magnitude of voltage belongs to,
The data value that this section corresponding record is preserved comprises: it is V (i-1) that lower limit detects voltage, and it is V (i) that the upper limit detects voltage, lower limit amount of fuel L (i-1), upper limit amount of fuel L (i);
Fuel tank fuel quantity LC (i)=L (i-1)+{ L (i)-L (i-1) } * { VC (i)-V (i-1) }/{ V (i)-V (i-1) }.
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CN2009101972014A CN102042857A (en) | 2009-10-15 | 2009-10-15 | GPS (Global Position System) monitoring method for automotive fuel oil volume |
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CN2009101972014A CN102042857A (en) | 2009-10-15 | 2009-10-15 | GPS (Global Position System) monitoring method for automotive fuel oil volume |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103017854A (en) * | 2011-09-28 | 2013-04-03 | 艾默生网络能源系统北美公司 | Oil amount calculating method, device and monitoring system |
CN104089684A (en) * | 2014-07-11 | 2014-10-08 | 重庆长安汽车股份有限公司 | Automobile fuel gauge calibration method |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1760646A (en) * | 2005-09-16 | 2006-04-19 | 杨容涛 | Digital method for measuring quantity of fuel oil in fuel tank of motor vehicle, and metering device |
CN1763484A (en) * | 2004-10-21 | 2006-04-26 | 胡嘉刚 | Motor vehicle fuel tank system capable of providing measurement data of road grade and fuel volume |
-
2009
- 2009-10-15 CN CN2009101972014A patent/CN102042857A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1763484A (en) * | 2004-10-21 | 2006-04-26 | 胡嘉刚 | Motor vehicle fuel tank system capable of providing measurement data of road grade and fuel volume |
CN1760646A (en) * | 2005-09-16 | 2006-04-19 | 杨容涛 | Digital method for measuring quantity of fuel oil in fuel tank of motor vehicle, and metering device |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103017854A (en) * | 2011-09-28 | 2013-04-03 | 艾默生网络能源系统北美公司 | Oil amount calculating method, device and monitoring system |
CN103017854B (en) * | 2011-09-28 | 2015-12-02 | 艾默生网络能源系统北美公司 | Oil mass computing method, device and supervisory system |
CN104089684A (en) * | 2014-07-11 | 2014-10-08 | 重庆长安汽车股份有限公司 | Automobile fuel gauge calibration method |
CN104089684B (en) * | 2014-07-11 | 2017-02-15 | 重庆长安汽车股份有限公司 | Automobile fuel gauge calibration method |
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Application publication date: 20110504 |