CN112129378A - Non-contact fuel quantity measuring device for vehicle fuel tank - Google Patents
Non-contact fuel quantity measuring device for vehicle fuel tank Download PDFInfo
- Publication number
- CN112129378A CN112129378A CN202010761995.9A CN202010761995A CN112129378A CN 112129378 A CN112129378 A CN 112129378A CN 202010761995 A CN202010761995 A CN 202010761995A CN 112129378 A CN112129378 A CN 112129378A
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- fuel tank
- fuel
- ultrasonic
- top surface
- micro
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- 239000002828 fuel tank Substances 0.000 title claims abstract description 111
- 239000000446 fuel Substances 0.000 title claims abstract description 43
- 239000007788 liquid Substances 0.000 claims abstract description 36
- 239000003921 oil Substances 0.000 claims description 64
- 239000000295 fuel oil Substances 0.000 claims description 5
- 239000010763 heavy fuel oil Substances 0.000 claims description 4
- 230000005389 magnetism Effects 0.000 description 3
- 235000014676 Phragmites communis Nutrition 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 230000001808 coupling effect Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
- G01F23/296—Acoustic waves
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- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Electromagnetism (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
The invention provides a non-contact fuel quantity measuring device of a vehicle fuel tank, which is characterized by comprising a fuel tank, an ultrasonic radar sensor and a micro ECU (electronic control unit); the ultrasonic radar sensor is arranged above the fuel tank, and the output end of the liquid level sensor is electrically connected with the micro ECU; wherein ultrasonic wave radar sensor's ultrasonic wave transmitting terminal and receiving terminal all set up in the inside top surface of fuel tank: when the fuel tank is empty, the micro ECU drives an ultrasonic transmitting end of the ultrasonic radar sensor to transmit ultrasonic waves and receives the ultrasonic waves reflected by the bottom plate of the fuel tank through a receiving end of the ultrasonic waves, and the total height value between the top surface of the fuel tank and the bottom plate of the fuel tank is calculated according to data fed back by the ultrasonic radar sensor; the invention solves the problems of short service life, easy function failure, poor universality and high cost of the conventional fuel level meter.
Description
Technical Field
The invention relates to the technical field of automobile production and manufacturing, in particular to a non-contact type measuring device for the fuel quantity of an automobile fuel tank.
Background
The floating ball type liquid level meter is the most common one of the oil quantity detection devices of the motor vehicle oil tank. Its structure mainly contains survey parts such as buret, tongue tube, magnetism floater and binding post and constitutes, installs a plurality of tongue tube on surveying the inside upper and lower direction of buret, has binding post in the upper end of surveying the buret, and the magnetism floater is a cylinder that contains the round hole, and the cover is at the survey buret outer wall, and the magnetism floater can freely slide from top to bottom along surveying the buret. The magnetic floating ball can float above the fuel oil and changes along with the change of the liquid level of the fuel oil, the contact of the reed switch at the corresponding position on the measuring pipe is attracted (for the normally open type of the contact of the reed switch) due to the magnetic coupling action of the magnetic floating ball, and the contact far away from the magnetic coupling is naturally disconnected, so that the total resistance value of the liquid level meter changes along with the height change of the liquid level (namely each total resistance value corresponds to one liquid level), and the total resistance values are transmitted to the special controller to identify the specific residual oil amount.
The main problems and disadvantages of the existing structures:
short service life and easy failure of function:
(1) the phenomenon of clamping stagnation: because the magnetic floating ball is in contact with the measuring pipe and moves relatively, friction and abrasion can occur between the magnetic floating ball and the measuring pipe, so that the magnetic floating ball is easy to generate a clamping stagnation phenomenon, the oil quantity display is in intermittent failure, and the residual oil quantity detection accuracy is not high;
(2) the phenomenon of jamming: in order to measure the positions of all liquid levels, the measuring pipe always extends from the upper part to the bottom of the fuel tank, the length of the measuring pipe is about 700mm generally, when a vehicle is in severe bump, the measuring pipe is easy to bend due to stirring of fuel oil, so that a magnetic floating ball is blocked, and even a measuring device is damaged and fails (the diameter of the measuring pipe is generally more than 20 mm), and the actual oil quantity of the fuel tank cannot be truly reflected;
the universality is poor: because the measuring pipe extends from the uppermost part of the fuel tank to the bottom of the fuel tank, the measuring pipes of different types of fuel tanks have different lengths and different total resistance values, so that the liquid level meters have various types, complex calibration parameters, high management difficulty, easy errors in design and assembly and poor universality;
heavy weight and high cost: the magnetic floating ball liquid level meter has the problems of complex structure, more materials, easy occurrence of problems, poor universality and the like, so that the cost is high.
Disclosure of Invention
The invention aims to provide a non-contact type measuring device for the fuel quantity of a vehicle fuel tank, aiming at overcoming the defects of the prior art, and solving the problems of short service life, easy functional failure, poor universality and higher cost of the conventional fuel level meter.
The invention provides a non-contact fuel quantity measuring device of a vehicle fuel tank, which is characterized by comprising a fuel tank, an ultrasonic radar sensor and a micro ECU (electronic control unit); the ultrasonic radar sensor is arranged above the fuel tank, and the output end of the liquid level sensor is electrically connected with the micro ECU; wherein ultrasonic wave radar sensor's ultrasonic wave transmitting terminal and receiving terminal all set up in the inside top surface of fuel tank: when the fuel tank is empty, the micro ECU drives an ultrasonic transmitting end of the ultrasonic radar sensor to transmit ultrasonic waves and receives the ultrasonic waves reflected by the bottom plate of the fuel tank through a receiving end of the ultrasonic waves, and the total height value between the top surface of the fuel tank and the bottom plate of the fuel tank is calculated according to data fed back by the ultrasonic radar sensor; when fuel exists in the fuel tank, the micro ECU drives an ultrasonic transmitting end of the ultrasonic radar sensor to transmit ultrasonic waves and receives the ultrasonic waves reflected by the fuel liquid level through an ultrasonic receiving end, and the liquid level height value between the top surface of the fuel tank and the fuel liquid level is calculated according to data fed back by the ultrasonic radar sensor; and the micro ECU calculates the real-time percentage of the fuel oil left in the fuel tank according to the total height value and the liquid level height value.
In the technical scheme, the micro ECU calibrates the total height value between the top surface of the fuel tank and the bottom plate of the fuel tank, which is obtained by calculation, as initial data and stores the initial data quantitatively; if the micro-ECU receives an external command initiated manually, the total height value between the top surface of the fuel tank and the bottom plate of the fuel tank is obtained again after the initialization.
In the technical scheme, the micro ECU drives the ultrasonic radar sensor to acquire the height value of the liquid level between the top surface of the fuel tank and the liquid level of the fuel in real time.
In the technical scheme, the micro ECU feeds back the total height value between the top surface of the fuel tank and the bottom plate of the fuel tank, the liquid level height value between the top surface of the fuel tank and the liquid level of the fuel and the real-time percentage of the residual fuel of the fuel tank, which are obtained through calculation, to the whole vehicle instrument in real time for display.
In the technical scheme, an oil return pipe and an oil outlet pipe which extend to the ground from the top surface of the fuel tank are arranged in the fuel tank; the bottom end of the oil return pipe is provided with a bottom joint communicated with the oil return pipe, and the bottom ports of the oil return pipe and the oil outlet pipe are provided with filter screens; the top end of the oil return pipe is provided with an oil return joint communicated with the oil return pipe; the top end of the oil outlet pipe is provided with an oil outlet joint communicated with the oil outlet pipe; the oil return joint and the oil outlet joint are arranged on the outer side of the top surface of the fuel tank.
In the technical scheme, the clamping seat is arranged on the top surface of the fuel tank, the body of the ultrasonic radar sensor is fixedly arranged on the top surface of the outer side of the fuel tank, and the connecting terminal is arranged on the body of the ultrasonic radar sensor and is electrically connected with the micro ECU through a wire.
In the above technical scheme, the oil return pipe penetrates through the base and is communicated with the oil return connector, the oil outlet pipe penetrates through the base and is communicated with the oil outlet connector, and the base is fixed in the clamping seat.
In the technical scheme, the micro ECU is electrically connected with the whole vehicle instrument through a CAN line.
In the technical scheme, the real-time percentage p of the residual fuel oil of the fuel tank is as follows:
h is the total height value between the top surface of the fuel tank and the bottom plate of the fuel tank, and H is the height value between the top surface of the fuel tank and the liquid level of the fuel.
The invention adopts a non-contact measurement mode, has no mechanical motion and friction, eliminates the problem of clamping stagnation or deadlocking caused by mechanical abrasion, and has long service life and good reliability. The invention can adopt the same measuring device for fuel tanks with different types and heights to automatically complete initialization. The invention has the advantages of simple structure, high integration level, light weight, large batch and low cost. The fuel quantity state of the fuel tank is displayed in real time through the whole vehicle instrument, so that a user can know the state of the whole vehicle conveniently.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a partial schematic view of the present invention;
the system comprises an ultrasonic radar sensor 1, an ultrasonic transmitting end and an ultrasonic receiving end of the ultrasonic radar sensor 11, a base 12, an oil outlet pipe 13, an oil outlet joint 14, an oil return joint 15, a wiring terminal 16, an oil return pipe 17, a filter screen 18, a bottom joint 19, a fuel tank 2, a clamping seat 21, a fuel tank bottom plate 22, a fuel tank top surface 23, a 3-lead wire, a 4-micro ECU, a 5-CAN wire and a fuel liquid level 6.
Detailed Description
The invention will be further described in detail with reference to the following drawings and specific examples, which are not intended to limit the invention, but are for clear understanding.
As shown in fig. 1, the invention provides a non-contact type fuel quantity measuring device of a vehicle fuel tank, which is characterized by comprising a fuel tank 2, an ultrasonic radar sensor 1 and a micro-ECU 4; the ultrasonic radar sensor 1 can transmit and receive ultrasonic waves of a specific frequency reflected by an obstacle, and the distance to the obstacle in front can be accurately calculated by calculating the time difference between the outward transmission and reception of the ultrasonic waves. The ultrasonic radar sensor 1 is arranged above the fuel tank 2, and the output end of the liquid level sensor 1 is electrically connected with the micro ECU 4; wherein ultrasonic wave transmitting terminal and receiving terminal 11 of ultrasonic radar sensor 1 all set up in the inside top surface of fuel tank 2: when the fuel tank 2 is empty, the micro-ECU 4 drives the ultrasonic transmitting end of the ultrasonic radar sensor 1 to transmit ultrasonic waves and receives the ultrasonic waves reflected by the fuel tank bottom plate 22 through the ultrasonic receiving end 11, and the total height value H between the fuel tank top surface 23 and the fuel tank bottom plate 22 is calculated according to data fed back by the ultrasonic radar sensor 1; when fuel exists in the fuel tank 2, the micro ECU4 drives the ultrasonic transmitting end of the ultrasonic radar sensor 1 to transmit ultrasonic waves and receives the ultrasonic waves reflected by the fuel liquid level 6 through the ultrasonic receiving end 11, and the liquid level height value h between the top surface 23 of the fuel tank and the fuel liquid level 6 is calculated according to data fed back by the ultrasonic radar sensor 1; the micro ECU4 calculates the real time percentage of fuel remaining in the fuel tank 2 based on the total height value and the level height value.
In the above technical solution, the real-time percentage p of the remaining fuel in the fuel tank 2 is:
in the technical scheme, the micro-ECU 4 calibrates the calculated total height value between the top surface 23 and the bottom plate 22 of the fuel tank as initial data and stores the initial data as quantitative data; if the micro ECU4 receives an external command initiated manually, i.e. to retrieve the total height between the tank top 23 and the tank bottom 22 after initialization, the same set of measuring devices can be used for different types and heights of fuel tanks 2, and the initialization is done automatically.
In the technical scheme, the micro-ECU 4 drives the ultrasonic radar sensor 1 to acquire the liquid level height value between the top surface 23 of the fuel tank and the liquid level 6 of the fuel in real time. The data h is acquired by the ultrasonic radar sensor 1 in real time (the sampling frequency can be set by a user) and processed by the micro ECU 4.
In the technical scheme, the micro ECU4 feeds back the total height value between the fuel tank top surface 23 and the fuel tank bottom plate 22, the liquid level height value between the fuel tank top surface 23 and the fuel liquid level 6 and the real-time percentage of the residual fuel of the fuel tank 2, which are obtained through calculation, to the whole vehicle instrument in real time for display. And the micro ECU4 analyzes and processes the data H and H to obtain p, and sends the p to a vehicle instrument for display through the CAN line 5.
In the above technical solution, the fuel tank 2 is internally provided with an oil return pipe 17 and an oil outlet pipe 13 extending from the top surface to the ground; the bottom end of the oil return pipe 17 is provided with a bottom joint 19 communicated with the oil return pipe, and the bottom ports of the oil return pipe 17 and the oil outlet pipe 13 are provided with filter screens 18; the top end of the oil return pipe 17 is provided with an oil return joint 15 communicated with the oil return pipe; the top end of the oil outlet pipe 13 is provided with an oil outlet joint 14 communicated with the oil outlet pipe; the oil return joint 15 and the oil outlet joint 14 are arranged on the outer side of the top surface of the fuel tank 2.
In the above technical scheme, the fuel tank top surface 23 is provided with the cassette 21, the body of the ultrasonic radar sensor 1 is fixedly arranged on the top surface of the outer side of the fuel tank 2, the body of the ultrasonic radar sensor 1 is provided with the wiring terminal 16, and the wiring terminal 16 is electrically connected with the micro ECU4 through the lead 3. The oil return pipe 17 penetrates through the base 12 to be communicated with the oil return joint 15, the oil outlet pipe 13 penetrates through the base 12 to be communicated with the oil outlet joint 14, and the base 12 is fixed in the clamping seat 21. According to the invention, the ultrasonic radar sensor 1 is fixed on the top surface 23 of the fuel tank through the clamping seat 21, so that the transmitting end and the receiving end 11 can effectively realize ultrasonic transceiving, and simultaneously, the safety and the stability of the electric connection between the wiring terminal 16 and the micro ECU4 are ensured. Meanwhile, the clamping seat 21 is arranged at the joint of the oil return pipe 17 and the oil outlet pipe 13 and the corresponding joint, so that the space in the vehicle is not occupied, and the arrangement in the vehicle is reasonably optimized.
Details not described in this specification are within the skill of the art that are well known to those skilled in the art.
Claims (9)
1. A non-contact type fuel quantity measuring device of a vehicle fuel tank is characterized by comprising the fuel tank, an ultrasonic radar sensor and a micro ECU; the ultrasonic radar sensor is arranged above the fuel tank, and the output end of the liquid level sensor is electrically connected with the micro ECU; wherein ultrasonic wave radar sensor's ultrasonic wave transmitting terminal and receiving terminal all set up in the inside top surface of fuel tank: when the fuel tank is empty, the micro ECU drives an ultrasonic transmitting end of the ultrasonic radar sensor to transmit ultrasonic waves and receives the ultrasonic waves reflected by the bottom plate of the fuel tank through a receiving end of the ultrasonic waves, and the total height value between the top surface of the fuel tank and the bottom plate of the fuel tank is calculated according to data fed back by the ultrasonic radar sensor; when fuel exists in the fuel tank, the micro ECU drives an ultrasonic transmitting end of the ultrasonic radar sensor to transmit ultrasonic waves and receives the ultrasonic waves reflected by the fuel liquid level through an ultrasonic receiving end, and the liquid level height value between the top surface of the fuel tank and the fuel liquid level is calculated according to data fed back by the ultrasonic radar sensor; and the micro ECU calculates the real-time percentage of the fuel oil left in the fuel tank according to the total height value and the liquid level height value.
2. The non-contact measuring device for the fuel quantity of the vehicle fuel tank according to claim 1, characterized in that the micro-ECU calibrates the calculated total height value between the top surface of the fuel tank and the bottom plate of the fuel tank as initial data and stores the initial data as quantitative data; if the micro-ECU receives an external command initiated manually, the total height value between the top surface of the fuel tank and the bottom plate of the fuel tank is obtained again after the initialization.
3. The non-contact type measuring device for the fuel quantity of the vehicle fuel tank as claimed in claim 2, wherein the micro-ECU drives the ultrasonic radar sensor to acquire the height value of the fuel level between the top surface of the fuel tank and the fuel level in real time.
4. The non-contact measuring device for the fuel quantity of the vehicle fuel tank according to claim 3, characterized in that the micro ECU feeds back the total height value between the top surface of the fuel tank and the bottom plate of the fuel tank, the liquid level height value between the top surface of the fuel tank and the liquid level of the fuel and the real-time percentage of the residual fuel of the fuel tank, which are obtained through calculation, to a vehicle instrument in real time for display.
5. The non-contact type fuel quantity measuring device of a vehicle fuel tank according to claim 1, wherein a fuel return pipe and a fuel outlet pipe are provided inside the fuel tank so as to extend from a top surface thereof to the ground; the bottom end of the oil return pipe is provided with a bottom joint communicated with the oil return pipe, and the bottom ports of the oil return pipe and the oil outlet pipe are provided with filter screens; the top end of the oil return pipe is provided with an oil return joint communicated with the oil return pipe; the top end of the oil outlet pipe is provided with an oil outlet joint communicated with the oil outlet pipe; the oil return joint and the oil outlet joint are arranged on the outer side of the top surface of the fuel tank.
6. The non-contact fuel quantity measuring device of the vehicle fuel tank as claimed in claim 5, wherein a clamping seat is arranged on the top surface of the fuel tank, the body of the ultrasonic radar sensor is fixedly arranged on the top surface of the outer side of the fuel tank, and a connecting terminal is arranged on the body of the ultrasonic radar sensor and electrically connected with the micro ECU through a conducting wire.
7. The non-contact measuring device for measuring the fuel quantity of the vehicle fuel tank according to claim 6, wherein the oil return pipe is communicated with the oil return joint through a base, the oil outlet pipe is communicated with the oil outlet joint through the base, and the base is fixed in the clamping seat.
8. The non-contact measuring device for the fuel quantity of the vehicle fuel tank according to claim 7, characterized in that the micro-ECU is electrically connected with a vehicle instrument through a CAN line.
9. The non-contact type fuel quantity measuring device of a vehicle fuel tank according to claim 1, wherein the real-time percentage p of fuel remaining in the fuel tank is:
h is the total height value between the top surface of the fuel tank and the bottom plate of the fuel tank, and H is the height value between the top surface of the fuel tank and the liquid level of the fuel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010761995.9A CN112129378A (en) | 2020-07-31 | 2020-07-31 | Non-contact fuel quantity measuring device for vehicle fuel tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010761995.9A CN112129378A (en) | 2020-07-31 | 2020-07-31 | Non-contact fuel quantity measuring device for vehicle fuel tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112129378A true CN112129378A (en) | 2020-12-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010761995.9A Pending CN112129378A (en) | 2020-07-31 | 2020-07-31 | Non-contact fuel quantity measuring device for vehicle fuel tank |
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| Country | Link |
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| CN (1) | CN112129378A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113375750A (en) * | 2021-06-10 | 2021-09-10 | 陕西延长石油（集团）有限责任公司 | Non-contact oil tank oil mass detection device and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001084090A1 (en) * | 2000-04-28 | 2001-11-08 | Ssi Technologies, Inc. | Fuel optimization system with improved fuel level sensor |
| CN101796377A (en) * | 2007-09-07 | 2010-08-04 | 大陆汽车有限责任公司 | Fuel delivery unit with a filling level sensor operating with ultrasonic waves |
| CN201917379U (en) * | 2010-12-31 | 2011-08-03 | 济南新天宇汽车电器有限公司 | Ultrasonic liquid level sensor for vehicles |
| CN109211358A (en) * | 2018-10-31 | 2019-01-15 | 上海理工大学 | A kind of rail tank car charge of oil liquid level detection device and detection method |
| US20190204135A1 (en) * | 2018-01-02 | 2019-07-04 | Coavis | Apparatus for measuring residual amount of fuel in fuel tank using ultrasonic sensor |
-
2020
- 2020-07-31 CN CN202010761995.9A patent/CN112129378A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001084090A1 (en) * | 2000-04-28 | 2001-11-08 | Ssi Technologies, Inc. | Fuel optimization system with improved fuel level sensor |
| CN101796377A (en) * | 2007-09-07 | 2010-08-04 | 大陆汽车有限责任公司 | Fuel delivery unit with a filling level sensor operating with ultrasonic waves |
| CN201917379U (en) * | 2010-12-31 | 2011-08-03 | 济南新天宇汽车电器有限公司 | Ultrasonic liquid level sensor for vehicles |
| US20190204135A1 (en) * | 2018-01-02 | 2019-07-04 | Coavis | Apparatus for measuring residual amount of fuel in fuel tank using ultrasonic sensor |
| CN109211358A (en) * | 2018-10-31 | 2019-01-15 | 上海理工大学 | A kind of rail tank car charge of oil liquid level detection device and detection method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113375750A (en) * | 2021-06-10 | 2021-09-10 | 陕西延长石油（集团）有限责任公司 | Non-contact oil tank oil mass detection device and method |
| CN113375750B (en) * | 2021-06-10 | 2024-04-16 | 陕西延长石油（集团）有限责任公司 | Non-contact type oil quantity detection device and method for oil tank |
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Application publication date: 20201225 |
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