CN104833705A - Automobile, and fuel oil monitoring device - Google Patents
Automobile, and fuel oil monitoring device Download PDFInfo
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- CN104833705A CN104833705A CN201410582578.2A CN201410582578A CN104833705A CN 104833705 A CN104833705 A CN 104833705A CN 201410582578 A CN201410582578 A CN 201410582578A CN 104833705 A CN104833705 A CN 104833705A
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Abstract
The invention discloses a fuel oil monitoring device which comprises: a power supply module used for supplying power; a detection module used for generating a first detection signal and a second detection signal according to change of oil level of automobile fuel oil; and a processing module being connected to the detection module and used for respectively acquiring corrosion degree of an automobile fuel oil pump and present oil level of the automobile fuel oil according to the first detection signal and the second detection signal. By means of the fuel oil monitoring device, not only is influence of contact resistance due to a sliding sheet on a fuel oil level signal avoided, thereby greatly improving accuracy of the fuel oil level signal, but also the present oil level of the automobile and the corrosion degrees of an oil level sensor and a fuel oil pump matched therewith can be monitored in real time. The fuel oil monitoring device can prevent roadside breakdown accident caused by corrosion of the fuel oil pump and improve user experience and driving safety. In addition, the invention discloses the automobile comprising the fuel oil monitoring device.
Description
Technical field
The present invention relates to technical field of vehicle, particularly a kind of fuel oil monitoring device and a kind of automobile comprising this fuel oil monitoring device.
Background technology
Fuel level sender is the important spare part of automobile, and automobile driver learns the surplus of vehicle fuel by the fuel level sender in automotive oil tank, estimates the distance travelled of automobile with this.In addition, possess car networking automobile on, automobile driver more need to obtain accurately fuel level signal accurately to learn the surplus of vehicle fuel.But, the rheostat fuel level sensor of two-wire system that what current vehicle fuel fuel level sensor was taked mostly is, the rheostat fuel level sensor of this two-wire system cannot eliminate the impact of rheostat contact resistance on oil level signal completely, and therefore, the fuel level signal of acquisition exists inaccurate hidden danger.
In order to evade the impact of rheostat contact resistance on fuel level signal, correlation technique proposes a kind of three-wire system automobile oil level sensor, comprising: an adjustable fuel level sensor divider resistance Rx, and its one end is as the first voltage output end V1 of sensor; The other end of described adjustable fuel level sensor divider resistance Rx is as the second voltage output end V2 of sensor; The sliding contact end of described adjustable fuel level sensor divider resistance Rx is as the earth terminal V3 of sensor.This circuit design can eliminate the impact of rheostat contact resistance on fuel level signal completely, thus accurately can transmit the fuel level signal of automobile.
But in correlation technique, this rheostat contact resistance of eliminating completely is to the scheme of fuel level effect of signals, has buried hidden danger but to the accident of casting anchor of automobile.This is because why automobile rheostat produces contact resistance, it is the result because fuel oil causes rheostatic corrosion, since the rheostat of vehicle fuel to fuel level sensor creates corrosive attack, also just corrosive attack is created to the fuel pump be immersed in fuel oil, and when fuel pump is corroded to a certain degree, fuel pump, by complete failure, quits work, and automobile will occur the accident of casting anchor.In this process because the impact of rheostat contact resistance is completely eliminated, therefore, before cut-out of fuel pump, do not have symptom to reflect.
Summary of the invention
Object of the present invention is intended to solve one of above-mentioned technical matters at least to a certain extent.
For this reason, one object of the present invention is to propose a kind of fuel oil monitoring device, this fuel oil monitoring device can prevent to be corroded the roadside breakdown accident caused because of fuel pump, greatly improves the accuracy of fuel level signal, thus promotes Consumer's Experience and drive safety.
Another object of the present invention is to propose a kind of automobile.
For achieving the above object, one aspect of the present invention embodiment proposes a kind of fuel oil monitoring device, and this fuel oil monitoring device comprises: power module, and described power module is used for providing power supply; Detection module, described detection module is used for changing generation first detection signal and the second detection signal according to the oil level of vehicle fuel; And processing module, described processing module is connected with described detection module, and described processing module is used for obtaining the extent of corrosion of automobile fuel pump and the current oil level of described vehicle fuel respectively according to described first detection signal and described second detection signal.
The fuel oil monitoring device that the embodiment of the present invention proposes, after detection module is according to oil level change generation first detection signal of vehicle fuel and the second detection signal, obtains the extent of corrosion of automobile fuel pump and the current oil level of vehicle fuel respectively by processing module first detection signal and the second detection signal.This fuel oil monitoring device prevents because fuel pump is corroded the roadside breakdown accident caused, and substantially increases the accuracy of fuel level signal, improves Consumer's Experience and drive safety.
Further, in one embodiment of the invention, described detection module comprises: fuel level sensor, described fuel level sensor comprises slide plate contact and slide rheostat, wherein, described slide plate contact controls described slide rheostat, and described slide plate contact changes along with the oil level of described vehicle fuel; Described slide rheostat comprises first end and the second end, and the first end of described slide rheostat is connected with described power module, the second end of described slide rheostat as the first output terminal of described detection module to export described first detection signal; And first divider resistance, one end of described first divider resistance is connected with described slide plate contact, the other end ground connection of described first divider resistance, between one end of described first divider resistance and described slide plate contact, there is first node, described first node as the second output terminal of described detection module to export described second detection signal.
Further, in one embodiment of the invention, described processing module specifically for the resistance that obtains contact resistance between described slide plate contact and the conduction band of described slide rheostat according to described first detection signal and described second detection signal, and obtains the extent of corrosion of described automobile fuel pump according to the resistance of described contact resistance.
Further, in one embodiment of the invention, described processing module obtains the resistance of described contact resistance according to following formula:
Rcontact＝(U1/U2-1)*R
Wherein, U1 is described first detection signal, and U2 is described second detection signal, and R is the resistance of described first divider resistance.
Further, in one embodiment of the invention, described processing module specifically for the resistance that obtains the second divider resistance between the first end of described slide rheostat and described slide plate contact according to described first detection signal and described second detection signal, and obtains the current oil level of described vehicle fuel according to the resistance of described second divider resistance.
Further, in one embodiment of the invention, described processing module obtains the resistance of described second divider resistance according to following formula:
Rx＝R*(U-U1)/U2
Wherein, U is the voltage of described power supply.
Further, in one embodiment of the invention, described detection module also comprises: the float be connected with described slide plate contact.
Further, in one embodiment of the invention, described processing module is instrument or the ECU (ElectronicControl Unit, electronic control unit) of automobile.
Further, in one embodiment of the invention, described power module is automobile power source.
For achieving the above object, the present invention on the other hand embodiment also proposed a kind of automobile, and this automobile comprises: fuel tank; And the described fuel oil monitoring device be arranged among described fuel tank.
The automobile that the embodiment of the present invention proposes obtains the extent of corrosion of automobile fuel pump and the current oil level of described vehicle fuel by fuel oil monitoring device.This automobile can effectively prevent to be corroded the roadside breakdown accident caused because of fuel pump, substantially increases the accuracy of fuel level signal, improves Consumer's Experience and drive safety.
The aspect that the present invention adds and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
The present invention above-mentioned and/or additional aspect and advantage will become obvious and easy understand from the following description of the accompanying drawings of embodiments, wherein:
Fig. 1 is the block diagram of the fuel oil monitoring device according to the embodiment of the present invention;
Fig. 2 is the structural representation of fuel oil monitoring device according to an embodiment of the invention; And
Fig. 3 is the block diagram of automobile according to an embodiment of the invention.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
Disclosing hereafter provides many different embodiments or example is used for realizing different structure of the present invention.Of the present invention open in order to simplify, hereinafter the parts of specific examples and setting are described.Certainly, they are only example, and object does not lie in restriction the present invention.In addition, the present invention can in different example repeat reference numerals and/or letter.This repetition is to simplify and clearly object, itself does not indicate the relation between discussed various embodiment and/or setting.In addition, the various specific technique that the invention provides and the example of material, but those of ordinary skill in the art can recognize the property of can be applicable to of other techniques and/or the use of other materials.In addition, fisrt feature described below second feature it " on " structure can comprise the embodiment that the first and second features are formed as directly contact, also can comprise other feature and be formed in embodiment between the first and second features, such first and second features may not be direct contacts.
In describing the invention, it should be noted that, unless otherwise prescribed and limit, term " installation ", " being connected ", " connection " should be interpreted broadly, such as, can be mechanical connection or electrical connection, also can be the connection of two element internals, can be directly be connected, also indirectly can be connected by intermediary, for the ordinary skill in the art, the concrete meaning of above-mentioned term can be understood as the case may be.
The fuel oil monitoring device and automobile that propose according to the embodiment of the present invention are described with reference to the accompanying drawings.
Fig. 1 is the block diagram of the fuel oil monitoring device according to the embodiment of the present invention.As shown in Figure 1, the fuel oil monitoring device 1 of the embodiment of the present invention comprises: power module 10, detection module 20 and processing module 30.Wherein, power module 10 is for providing power supply.Detection module 20 changes generation first detection signal and the second detection signal for the oil level according to vehicle fuel.Processing module 30 is connected with detection module 20, and processing module 30 is for obtaining the extent of corrosion of automobile fuel pump and the current oil level of vehicle fuel respectively according to the first detection signal and the second detection signal.
Further, in one embodiment of the invention, as shown in Figure 2, processing module 30 can be the instrument or ECU etc. of automobile, first detection signal can input to the first port P1 of instrument or ECU, and the second detection signal can input to the second port P2 of instrument or ECU.Further, in one embodiment of the invention, power module 10 can be automobile power source VCC.
Further, in one embodiment of the invention, as shown in Figure 2, detection module 20 can comprise: fuel level sensor 21 and the first divider resistance R1.Wherein, fuel level sensor 21 can comprise slide plate contact 211 and slide rheostat 212, and wherein, slide plate contact 211 controls slide rheostat 212, and slide plate contact 211 changes along with the oil level of vehicle fuel.Slide rheostat 212 comprises first end M and the second end N, and the first end M of slide rheostat 212 is connected with power module 10, the second end N of slide rheostat 212 as the first output terminal of detection module 20 to export the first detection signal.One end of first divider resistance R1 is connected with slide plate contact 211, the other end ground connection of the first divider resistance R1, between one end of first divider resistance R1 and slide plate contact 211, there is first node J1, first node J1 as the second output terminal of detection module 20 to export the second detection signal.Further, in one embodiment of the invention, detection module 20 can also comprise the float be connected with slide plate contact 211.
Particularly, because fuel level sensor 21 is in working for a long time, slide rheostat 212 corrodes by fuel oil, make between the conduction band of slide plate contact 211 and slide rheostat 212, to produce resistance (the contact resistance Rc namely in Fig. 2), the resistance of contact resistance Rc is designated as Rcontact, and the size of the resistance Rcontact of the resistance Rc that gets an electric shock can reflect the degree that fuel level sensor 21 and supporting automobile fuel pump thereof are corroded by fuel oil.In addition, when in fuel tank 2, the oil level of fuel level and vehicle fuel changes, in fuel level sensor 21, slide plate contact 211 is moved with the change of fuel level in fuel tank 2 under the drive of float, the resistance Rx of the second divider resistance R2 between first end M and slide plate contact 211 is changed with the change of fuel level in fuel tank 2, and namely the resistance Rx of the second divider resistance R2 can reflect the level height of vehicle fuel.
Further, in one embodiment of the invention, processing module 30 specifically may be used for: the resistance obtaining contact resistance Rc between slide plate contact 211 and the conduction band of slide rheostat 212 according to the first detection signal and the second detection signal, and the extent of corrosion obtaining automobile fuel pump according to the resistance of contact resistance Rc.
Further, in one embodiment of the invention, due to the first detection signal U1=U* (Rcontact+R)/(Rx+Rcontact+R), second detection signal U2=U*R/ (Rx+Rcontact+R), therefore, processing module 30 can obtain the resistance of contact resistance Rc according to following formula:
Rcontact＝(U1/U2-1)*R
Wherein, U1 is the first detection signal, and U2 is the second detection signal, and R is the resistance of the first divider resistance R1, and U is the voltage of power supply.As can be seen from the above equation, resistance R due to the first divider resistance R1 is a fixed value, by the first detection signal U1 of the first port P1 in real-time monitoring meter or ECU and the second detection signal U2 of the second port P2, just can obtain the resistance Rcontact of contact resistance Rc, and then reflect by the size of the resistance Rcontact of this contact resistance Rc the degree that fuel level sensor 21 and supporting automobile fuel pump thereof are corroded by fuel oil.
Further, in one embodiment of the invention, processing module 30 specifically may be used for: the resistance obtaining the second divider resistance R2 between the first end M of slide rheostat 212 and slide plate contact 211 according to the first detection signal and the second detection signal, and the current oil level obtaining vehicle fuel according to the resistance of the second divider resistance R2.
Further, in one embodiment of the invention, due to U=(I*Rx)+U1, U1=U-(I*Rx), I=U2/R, therefore, processing module 30 can obtain the resistance of the second divider resistance R2 according to following formula:
Rx＝R*(U-U1)/U2
Wherein, U is the voltage of power supply, and I is the electric current by the first divider resistance R1.As can be seen from the above equation, the resistance Rx of the second divider resistance R2 and the resistance Rcontact of contact resistance Rc has nothing to do, and avoids the impact of the resistance Rcontact of the contact resistance Rc that slide plate contact 211 produces.Because the voltage U of power supply and the resistance R of the first divider resistance R1 are fixed value, so by the first detection signal U1 of the first port P1 and the second detection signal U2 of the second port P2 in real-time monitoring meter or ECU, just can obtain the actual change situation of the resistance Rx of the second divider resistance R2, and then the current oil level of vehicle fuel can be reflected by the size of the resistance Rx of this second divider resistance R2.
The fuel oil monitoring device that the embodiment of the present invention proposes, after detection module is according to oil level change generation first detection signal of vehicle fuel and the second detection signal, obtains the extent of corrosion of automobile fuel pump and the current oil level of vehicle fuel respectively by processing module first detection signal and the second detection signal.The impact that the contact resistance that this fuel oil monitoring device not only avoid the generation of slide plate contact causes fuel level signal, substantially increase the accuracy of fuel level signal, and can the degree that is corroded of the current oil level of Real-Time Monitoring vehicle fuel, fuel level sensor and supporting fuel pump thereof, prevent because fuel pump is corroded the roadside breakdown accident caused, improve Consumer's Experience and drive safety.
The present invention on the other hand embodiment also proposed a kind of automobile, and as shown in Figure 3, this automobile comprises: fuel tank 2 and fuel oil monitoring device 1.Wherein, fuel oil monitoring device 1 is arranged among fuel tank 2.
The automobile that the embodiment of the present invention proposes obtains the extent of corrosion of automobile fuel pump and the current oil level of vehicle fuel by fuel oil monitoring device.The impact that the contact resistance that this automobile not only avoid the generation of slide plate contact causes fuel level signal, substantially increase the accuracy of fuel level signal, and can the degree that is corroded of the current oil level of Real-Time Monitoring vehicle fuel, fuel level sensor and supporting fuel pump thereof, prevent because fuel pump is corroded the roadside breakdown accident caused, improve Consumer's Experience and drive safety.
Describe and can be understood in process flow diagram or in this any process otherwise described or method, represent and comprise one or more for realizing the module of the code of the executable instruction of the step of specific logical function or process, fragment or part, and the scope of the preferred embodiment of the present invention comprises other realization, wherein can not according to order that is shown or that discuss, comprise according to involved function by the mode while of basic or by contrary order, carry out n-back test, this should understand by embodiments of the invention person of ordinary skill in the field.
In flow charts represent or in this logic otherwise described and/or step, such as, the sequencing list of the executable instruction for realizing logic function can be considered to, may be embodied in any computer-readable medium, for instruction execution system, device or equipment (as computer based system, comprise the system of processor or other can from instruction execution system, device or equipment instruction fetch and perform the system of instruction) use, or to use in conjunction with these instruction execution systems, device or equipment.With regard to this instructions, " computer-readable medium " can be anyly can to comprise, store, communicate, propagate or transmission procedure for instruction execution system, device or equipment or the device that uses in conjunction with these instruction execution systems, device or equipment.The example more specifically (non-exhaustive list) of computer-readable medium comprises following: the electrical connection section (electronic installation) with one or more wiring, portable computer diskette box (magnetic device), random access memory (RAM), ROM (read-only memory) (ROM), erasablely edit ROM (read-only memory) (EPROM or flash memory), fiber device, and portable optic disk ROM (read-only memory) (CDROM).In addition, computer-readable medium can be even paper or other suitable media that can print described program thereon, because can such as by carrying out optical scanning to paper or other media, then carry out editing, decipher or carry out process with other suitable methods if desired and electronically obtain described program, be then stored in computer memory.
Should be appreciated that each several part of the present invention can realize with hardware, software, firmware or their combination.In the above-described embodiment, multiple step or method can with to store in memory and the software performed by suitable instruction execution system or firmware realize.Such as, if realized with hardware, the same in another embodiment, can realize by any one in following technology well known in the art or their combination: the discrete logic with the logic gates for realizing logic function to data-signal, there is the special IC of suitable combinational logic gate circuit, programmable gate array (PGA), field programmable gate array (FPGA) etc.
Those skilled in the art are appreciated that realizing all or part of step that above-described embodiment method carries is that the hardware that can carry out instruction relevant by program completes, described program can be stored in a kind of computer-readable recording medium, this program perform time, step comprising embodiment of the method one or a combination set of.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing module, also can be that the independent physics of unit exists, also can be integrated in a module by two or more unit.Above-mentioned integrated module both can adopt the form of hardware to realize, and the form of software function module also can be adopted to realize.If described integrated module using the form of software function module realize and as independently production marketing or use time, also can be stored in a computer read/write memory medium.
The above-mentioned storage medium mentioned can be ROM (read-only memory), disk or CD etc.
In the description of this instructions, specific features, structure, material or feature that the description of reference term " embodiment ", " some embodiments ", " example ", " concrete example " or " some examples " etc. means to describe in conjunction with this embodiment or example are contained at least one embodiment of the present invention or example.In this manual, identical embodiment or example are not necessarily referred to the schematic representation of above-mentioned term.And the specific features of description, structure, material or feature can combine in an appropriate manner in any one or more embodiment or example.
Although illustrate and describe embodiments of the invention, for the ordinary skill in the art, be appreciated that and can carry out multiple change, amendment, replacement and modification to these embodiments without departing from the principles and spirit of the present invention, scope of the present invention is by claims and equivalency thereof.
Claims (10)
1. a fuel oil monitoring device, is characterized in that, comprising:
Power module, described power module is used for providing power supply;
Detection module, described detection module is used for changing generation first detection signal and the second detection signal according to the oil level of vehicle fuel; And
Processing module, described processing module is connected with described detection module, and described processing module is used for obtaining the extent of corrosion of automobile fuel pump and the current oil level of described vehicle fuel respectively according to described first detection signal and described second detection signal.
2. fuel oil monitoring device as claimed in claim 1, it is characterized in that, described detection module comprises:
Fuel level sensor, described fuel level sensor comprises slide plate contact and slide rheostat, wherein,
Described slide plate contact controls described slide rheostat, and described slide plate contact changes along with the oil level of described vehicle fuel;
Described slide rheostat comprises first end and the second end, and the first end of described slide rheostat is connected with described power module, the second end of described slide rheostat as the first output terminal of described detection module to export described first detection signal; And
First divider resistance, one end of described first divider resistance is connected with described slide plate contact, the other end ground connection of described first divider resistance, between one end of described first divider resistance and described slide plate contact, there is first node, described first node as the second output terminal of described detection module to export described second detection signal.
3. fuel oil monitoring device as claimed in claim 2, is characterized in that, described processing module specifically for:
Obtain the resistance of contact resistance between described slide plate contact and the conduction band of described slide rheostat according to described first detection signal and described second detection signal, and obtain the extent of corrosion of described automobile fuel pump according to the resistance of described contact resistance.
4. fuel oil monitoring device as claimed in claim 3, it is characterized in that, described processing module obtains the resistance of described contact resistance according to following formula:
Rcontact＝(U1/U2-1)*R
Wherein, U1 is described first detection signal, and U2 is described second detection signal, and R is the resistance of described first divider resistance.
5. fuel oil monitoring device as claimed in claim 2, is characterized in that, described processing module specifically for:
Obtain the resistance of the second divider resistance between the first end of described slide rheostat and described slide plate contact according to described first detection signal and described second detection signal, and obtain the current oil level of described vehicle fuel according to the resistance of described second divider resistance.
6. fuel oil monitoring device as claimed in claim 5, is characterized in that, described processing module obtains the resistance of described second divider resistance according to following formula:
Rx＝R*(U-U1)/U2
Wherein, U is the voltage of described power supply.
7. the fuel oil monitoring device according to any one of claim 2-6, is characterized in that, described detection module also comprises:
The float be connected with described slide plate contact.
8. fuel oil monitoring device as claimed in claim 1, it is characterized in that, described processing module is instrument or the electronic control unit ECU of automobile.
9. fuel oil monitoring device as claimed in claim 1, it is characterized in that, described power module is automobile power source.
10. an automobile, is characterized in that, comprising:
Fuel tank; And
Be arranged on the fuel oil monitoring device as claimed in any one of claims 1-9 wherein among described fuel tank.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410582578.2A CN104833705A (en) | 2014-10-27 | 2014-10-27 | Automobile, and fuel oil monitoring device |
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| CN201410582578.2A CN104833705A (en) | 2014-10-27 | 2014-10-27 | Automobile, and fuel oil monitoring device |
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| CN201410582578.2A Pending CN104833705A (en) | 2014-10-27 | 2014-10-27 | Automobile, and fuel oil monitoring device |
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