CN203132646U - Automobile oil volume displaying device - Google Patents
Automobile oil volume displaying device Download PDFInfo
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- CN203132646U CN203132646U CN 201320087455 CN201320087455U CN203132646U CN 203132646 U CN203132646 U CN 203132646U CN 201320087455 CN201320087455 CN 201320087455 CN 201320087455 U CN201320087455 U CN 201320087455U CN 203132646 U CN203132646 U CN 203132646U
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Abstract
The utility model provides a device capable of displaying the current oil volume information of an automobile visually and correctly. The device comprises an input circuit for receiving an oil volume signal sent by a liquid level sensor, a central processor connected with the output end of the input circuit, a variable resistor for restoring a conversion oil volume signal sent by the input circuit, a storage connected with the central processor and communicating with the central processor, an oil volume display plate and an oil volume dial gauge, wherein the oil volume display plate and the oil volume dial gauge are connected with the output end of the variable resistor respectively. The central processor is connected with the variable resistor and used for controlling the variable resistance. The digital automobile oil volume displaying device has the characteristic of the existing pointer type fuel gauge of being capable of reflecting automobile oil volume visually and can build a corresponding operational model to display the automobile oil volume correctly according to automobile actual conditions including automobile oil tank shape and size and liquid level sensor models and characteristics.
Description
Technical field
The utility model relates to technical field of automotive electronics, relates in particular to the device of the current oil mass information of the accurate and visual display automobile of a kind of energy.
Background technology
Existing automobile oil mass display device generally comprises pointer oil quantity scale table and numeral shows fuel level gauge.The pointer-type oil quantity scale table Fuel Oil Remaining of display automobile fuel tank comparatively intuitively accounts for the general proportions of fuel tank total measurement (volume), but its shortcoming is indicated scale generally can only reflect Fuel Oil Remaining comparatively roughly, and is difficult to accurately show the numerical value of Fuel Oil Remaining.Numeral shows the accurately numerical value of display automobile Fuel Oil Remaining of fuel level gauge, but is difficult to reflect intuitively the ratio of the shared fuel tank total measurement (volume) of automobile Fuel Oil Remaining.In addition, the kind of fuel tank shape and liquid level sensor also all might impact measurement and the demonstration accuracy of Fuel Oil Remaining.Moreover, in the prior art, the oil mass display device of a lot of automobiles can give the alarm to remind the driver when Fuel Oil Remaining is lower than a critical value, but the value of these critical values factory settings when normally automobile dispatches from the factory can not freely be set and regulate according to actual conditions by the driver.
The utility model content
The purpose of this utility model be to overcome existing oil mass display device can not be not only accurately but also react the shortcoming of actual oil mass intuitively, and a kind of automobile oil mass display device is provided, comprise for the oil mass display board, the oil quantity scale table that receive input circuit, the central processing unit that is connected described input circuit output terminal that liquid level sensor sends oil mass signal and be used for variable resistor that the described input circuit of reduction sends the oil mass signal of conversion, link to each other and set up the storer of communication and be connected with described variable resistor output terminal respectively with described central processing unit; Described central processing unit links to each other with described variable resistor and is used for the described variable resistor resistance of control;
Described input circuit comprises oil mass data converter and computing amplification converter; The input end of described oil mass data converter links to each other with described liquid level sensor output terminal, the output terminal of described oil mass data converter links to each other with the input end of described computing amplification converter, and the output terminal of described computing amplification converter links to each other with described variable resistor with described central processing unit respectively.
In the above-mentioned automobile oil mass display device of the utility model, described oil mass data converter comprises inductive coil, the 4th pin of described inductive coil is connected with liquid level sensor, the crus secunda of described inductive coil links to each other with first power supply through first resistance, link to each other with described computing amplification converter simultaneously, first pin of described inductive coil and tripod be ground connection respectively.
In the above-mentioned automobile oil mass display device of the utility model, described computing amplification converter comprises integrated package, first pin of described integrated package links to each other with crus secunda, and link to each other with described oil mass data converter through first electric capacity, second resistance in order, also link to each other with the 5th pin of described integrated package through the 4th resistance; Described integrated package tripod link to each other with described oil mass data converter with described second resistance through the 3rd resistance in order, also through second electric capacity parallel with one another and the 3rd capacity earth; The 4th pin ground connection of described integrated package; The 6th pin of described integrated package is through the 6th resistance eutral grounding, also link to each other with described variable resistor input end with described central processing unit respectively through the 5th resistance, the 7th resistance in order, also in order through described the 5th resistance, described the 7th resistance and diode ground connection, also link to each other with the 7th pin of described integrated package through described the 5th resistance simultaneously, the octal of described integrated package links to each other with second source, simultaneously through the 4th capacity earth.
In the above-mentioned automobile oil mass display device of the utility model, the output terminal of described computing amplification converter connects with oil mass display board, described oil quantity scale epiphase respectively through variable resistor successively; The output terminal of described computing amplification converter also links to each other with described central processing unit; Described variable-resistance resistance is controlled by described central processing unit.
In the above-mentioned automobile oil mass display device of the utility model, described oil mass display board is by the digital oil meter Peripheral Interface, RS485 circuit, power circuit, the MCU(single-chip microcomputer that link to each other with described variable resistor output terminal) and the burned interface of the program that links to each other with MCU respectively, LED warning light, buzzing loudspeaker and charactron form, wherein, numeral oil meter Peripheral Interface is connected by communication through RS485 circuit and MCU, and digital oil meter Peripheral Interface links to each other through MCU54, charactron.
The automobile numeral of the utility model design shows the oil mass device, not only has the function that existing pointer fuel level gauge intuitively reflects the shared tankage ratio of automobile oil mass, can (comprise automotive oil tank shape, size according to the automobile actual conditions again, the model of liquid level sensor, characteristics) set up the accurate numerical value that corresponding operational model comes accurate display automobile oil mass, can also allow the driver according to the suitable alarm critical value of himself actual conditions (as driving ability, driving habits) formulation, be implemented in the sound and light alarm prompting of sending correspondence under the situation of low on fuel.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:
Accompanying drawing 1 is the block diagram of automobile oil mass display device embodiment of the present utility model;
Embodiment
Below in conjunction with accompanying drawing content of the present utility model is described in detail.
As shown in Figure 1, the automobile oil mass display device that provides of the utility model comprises for the oil mass display board, the oil quantity scale table that receive input circuit, the central processing unit that is connected described input circuit output terminal that liquid level sensor sends oil mass signal and be used for variable resistor that the described input circuit of reduction sends the oil mass signal of conversion, link to each other and set up the storer of communication and be connected with described variable resistor output terminal respectively with described central processing unit; Described central processing unit links to each other with described variable resistor and is used for the described variable resistor resistance of control;
Described input circuit comprises oil mass data converter and computing amplification converter; The input end of described oil mass data converter links to each other with described liquid level sensor output terminal, the output terminal of described oil mass data converter links to each other with the input end of described computing amplification converter, and the output terminal of described computing amplification converter links to each other with described variable resistor with described central processing unit respectively.
The principle of work of the automobile oil mass display device that the utility model provides is:
Wherein, liquid level sensor 6 can have many types, such as condenser type, and electronic type etc., different designs has different profiles and principle of work.
The transducing part of capacitance level transducer is a coaxial container, cause the variation of capacitor's capacity between sensor housing and the induction electrode after oil enters container, the variation of oil mass also can further cause the variation of capacitor's capacity between sensor housing and the induction electrode.
The principle of work of electronic type liquid level sensor is: oil float that is floating is set on the surface of oil reservoir, the height that how much has determined float of oil, the float other end is potentiometer, other end potentiometer can arrive different potentials along with the height of oil level, can be divided into output forms such as resistance-type, voltage-type, frequency type according to the difference of output signal.
With reference to Fig. 2, described oil mass data converter 11 also comprises inductive coil L1, the 4th pin L14 of described inductive coil L1 is connected with liquid level sensor 6, the crus secunda L12 of described inductive coil links to each other with the first power supply VCC1 through first resistance R 1, link to each other with described computing amplification converter 12 simultaneously, the first pin L11 of described inductive coil and tripod L13 be ground connection respectively.
During work, the at first automobile oil mass display device energising that the utility model is provided, the VR signal of liquid level sensor 6 outputs inserts the 4th pin L14 of described inductive coil L1, under constant voltage, inductive coil L1 produces corresponding VR_IN signal, by crus secunda L12 output and the access computing amplification converter 12 of described inductive coil L1.
With reference to Fig. 3, described computing amplification converter 12 comprises ic chip, the first pin IC1 of described ic chip links to each other with crus secunda IC2, and link to each other with described oil mass data converter 11 through first capacitor C 1, second resistance R 2 in order, also link to each other with the 5th pin IC5 of described ic chip through the 4th resistance R 4; The tripod IC3 of described ic chip links to each other with described oil mass data converter 11 with described second resistance R 2 through the 3rd resistance R 3 in order, also through second capacitor C 2 parallel with one another and the 3rd capacitor C 3 ground connection; The 4th pin IC4 ground connection of described ic chip; The 6th pin IC6 of described ic chip is through the 6th resistance R 6 ground connection, also link to each other with described variable resistor 400 input ends with described central processing unit 2 respectively through the 5th resistance R 5, the 7th resistance R 7 in order, also in order through described the 5th resistance R 5, described the 7th resistance R 7 and diode D1 ground connection, also link to each other with the 7th pin IC7 of described ic chip through described the 5th resistance R 5 simultaneously, the octal IC8 of described ic chip links to each other with second source VCC2, simultaneously through the 4th capacitor C 4 ground connection.
During work, the VR_IN signal of oil mass data converter 11 output inserts the tripod IC3 of described ic chip in order through described second resistance R 2 and described the 3rd resistance R 3, under constant voltage, amplify and from the 7th pin IC7 output of described ic chip, change into the A/D voltage signal through described the 7th resistance R 7.
With reference to Fig. 4, the output terminal of described computing amplification converter 12 links to each other with oil mass display board 3, described oil quantity scale table 4 respectively through variable resistor 400 successively; The output terminal of described computing amplification converter 12 also links to each other with described central processing unit 2; The resistance of described variable resistor 400 is by described central processing unit 2 controls.
In the present embodiment, described variable resistor 400 comprises 8 controlled resistance output unit 41-48, each controlled resistance output unit comprises a relay and one and this relay parallel resistor, particularly, the first resistance output unit 41 comprises first relay K 1 and ten one resistance R 11 in parallel with this first relay K 1; The second resistance output unit 42 comprises second relay K 2 and ten two resistance R 12 in parallel with this second relay K 2; The 3rd resistance output unit 43 comprises the 3rd relay K 3 and ten three resistance R 13 in parallel with the 3rd relay K 3; The 4th resistance output unit 44 comprises the 4th relay K 4 and ten four resistance R 14 in parallel with the 4th relay K 4; And the like to the 8th resistance output unit 48, described the 8th resistance output unit 48 comprises the 8th relay K 8 and ten eight resistance R 18 in parallel with the 8th relay K 8; 8 output pin IO1, IO2 of described central processing unit 2 ... IO8 respectively with described 8 relay K 1, K2 ... K8 links to each other.
During work, 8 output pin IO1, IO2 in the central processing unit 2 ... IO8 controls relay K 1, the K2 that is attached thereto respectively ... K8 opens or is closed, thereby control and described relay K 1, K2 respectively ... the corresponding parallel resistor R11 of K8, R12 ... R18 short circuit or connection, thus the resistance of described variable resistor 400 changed; Utilize this variable resistor 400 to reduce the resistance of the original oil mass of vehicle, the A/D voltage signal is changed into the VR signal again, make harmless its oil mass that shows of former car oil meter.
As shown in Figure 5, described oil mass display board 3 is made up of the digital oil meter Peripheral Interface 51, RS485 circuit 52, power circuit 53, the MCU54 that link to each other with described variable resistor 400 output terminals and the burned interface 55 of program, LED warning light 56, buzzing loudspeaker 57 and the charactron 58 that link to each other with MCU54, wherein, numeral oil meter Peripheral Interface 51 is connected by communication with MCU54 through RS485 circuit 52, and digital oil meter Peripheral Interface 51 links to each other through MCU54, charactron 58.In the present embodiment, this LED warning light 56 is red green warning light, and this charactron 58 is 48 sections charactrons.
During work, oil mass display board 3 receives described VR signal by digital oil meter Peripheral Interface 51, MCU54 calls by the burned interface 55 of program that tank model information is as shown in table 1 to be handled the VR signal, obtains the oil mass of corresponding VR signal, and shows corresponding data at charactron 58; When analyzing oil mass in the fuel tank obtain greater than the oil mass warning value of certain setting by MCU, green light is long bright in the LED warning light 56, red light is in and extinguishes state, when oil mass is less than or equal to the oil mass warning value of certain setting in the fuel tank that obtains by the MCU54 analysis, then red light lights in the LED warning light 56, green light extinguishes, and the buzzing loudspeaker 57 warning sound that sounds.
Table 1
Can see from table 1: fuel level gauge is divided into 21 lattice numbers, and measuring the maximum oil mass of fuel tank is 100L, and each lattice is represented 5L, and the signal resistance of liquid level sensor 6 outputs is 0-1000 Ω, and oil mass is 0-100L in the corresponding fuel tank.For example: setting in advance the oil mass warning value is 15L, during work, when the signal resistance of liquid level sensor 6 outputs is 450 Ω, MCU calls the tank model information as table 1, obtain that oil mass is 45L in fuel tank this moment, and be that 8 sections charactrons 58 show 045.0L 4 and since in this moment fuel tank oil mass greater than default oil mass warning value, so green light is long bright in the red green LED warning light at this moment, red light is in and extinguishes state; When the signal resistance of liquid level sensor 6 output was 100 Ω, MCU called the tank model information as table 1, obtained that oil mass is 10L in fuel tank this moment, and showed the printed words of " 010.0L " by 48 sections charactrons 58, in order to show current concrete oil mass.Because oil mass is less than default oil mass warning value in this moment fuel tank, then red light lights in the red green LED warning light 56, and green light extinguishes, and the buzzing loudspeaker 57 warning sound that sounds.
Simultaneously, pointer oil quantity scale table 4 receives by variable resistor 400 and transforms the VR signal that sends, and the tank model information of call list 1 obtains oil mass lattice number in the corresponding fuel tank, shown in pointer oil quantity scale table 4, gives the user with eye impressions intuitively.For example when the signal resistance of liquid level sensor 6 output was 450 Ω, MCU54 called the tank model information as table 1, obtained in the fuel tank this moment oil mass and was in the 10th case and puts, so pointed the 10th case is put in the pointer oil quantity scale table 4; When the signal resistance of liquid level sensor 6 output was 100 Ω, MCU54 called the tank model information as table 1, obtained that oil mass is that 3 cases are put in fuel tank this moment, so pointed the 3rd case is put in the pointer oil quantity scale table 4.
The above is preferred embodiment of the present utility model only, is not limited to the utility model, and for a person skilled in the art, the utility model can have various changes and variation.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., all should be included within the claim scope of the present utility model.
Claims (5)
1. automobile oil mass display device is characterized in that: comprise for receiving input circuit (1), the central processing unit (2) that is connected described input circuit (1) output terminal that liquid level sensor (6) sends oil mass signal and being used for variable resistor (400) that the described input circuit of reduction (1) sends the oil mass signal of conversion, and oil mass display board (3), the oil quantity scale table (4) setting up the storer (5) of communication and respectively with described variable resistor (400) output terminal be connected continuous with described central processing unit (2); Described central processing unit (2) links to each other with described variable resistor (400) and is used for control described variable resistor (400) resistance;
Described input circuit (1) comprises oil mass data converter (11) and computing amplification converter (12); The input end of described oil mass data converter (11) links to each other with described liquid level sensor (6) output terminal, the output terminal of described oil mass data converter (11) links to each other with the input end of described computing amplification converter (12), and the output terminal of described computing amplification converter (12) links to each other with described variable resistor (400) with described central processing unit (2) respectively.
2. automobile oil mass display device according to claim 1, it is characterized in that, described oil mass data converter (11) comprises inductive coil (L1), the 4th pin (L14) of described inductive coil (L1) is connected with liquid level sensor (6), the crus secunda of described inductive coil (L12) links to each other with first power supply (VCC1) through first resistance (R1), link to each other simultaneously first pin (L11) of described inductive coil and tripod (L13) difference ground connection with described computing amplification converter (12).
3. automobile oil mass display device according to claim 1, it is characterized in that, described computing amplification converter (12) comprises integrated package (IC), first pin (IC1) of described integrated package (IC) links to each other with crus secunda (IC2), and link to each other with described oil mass data converter (11) through first electric capacity (C1), second resistance (R2) in order, also link to each other with the 5th pin (IC5) of described integrated package (IC) through the 4th resistance (R4); Described integrated package (IC) tripod (IC3) link to each other with described oil mass data converter (11) with described second resistance (R2) through the 3rd resistance (R3) in order, also through second electric capacity (C2) parallel with one another and the 3rd electric capacity (C3) ground connection; The 4th pin (IC4) ground connection of described integrated package (IC); The 6th pin (IC6) of described integrated package (IC) is through the 6th resistance (R6) ground connection, also in order through the 5th resistance (R5), the 7th resistance (R7) links to each other with described variable resistor (400) input end with described central processing unit (2) respectively, also in order through described the 5th resistance (R5), described the 7th resistance (R7) and diode (D1) ground connection, also link to each other with the 7th pin (IC7) of described integrated package (IC) through described the 5th resistance (R5) simultaneously, the octal (IC8) of described integrated package (IC) links to each other with second source (VCC2), simultaneously through the 4th electric capacity (C4) ground connection.
4. automobile oil mass display device according to claim 1 is characterized in that, the output terminal of described computing amplification converter (12) links to each other with oil mass display board (3), described oil quantity scale table (4) respectively through variable resistor (400) successively; The output terminal of described computing amplification converter (12) also links to each other with described central processing unit (2); The resistance of described variable resistor (400) is controlled by described central processing unit (2).
5. automobile oil mass display device according to claim 1, it is characterized in that, described oil mass display board (3) is by the digital oil meter Peripheral Interface (51) that links to each other with described variable resistor (400) output terminal, RS485 circuit (52), power circuit (53), MCU(54) and respectively with MCU(54) the burned interface of program (55) that links to each other, LED warning light (56), buzzing loudspeaker (57) and charactron (58) are formed, wherein, numeral oil meter Peripheral Interface (51) is connected by communication through RS485 circuit (52) and MCU(54), and digital oil meter Peripheral Interface (51) is through MCU(54), charactron (58) links to each other.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320087455 CN203132646U (en) | 2013-02-26 | 2013-02-26 | Automobile oil volume displaying device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320087455 CN203132646U (en) | 2013-02-26 | 2013-02-26 | Automobile oil volume displaying device |
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| CN203132646U true CN203132646U (en) | 2013-08-14 |
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| CN 201320087455 Expired - Fee Related CN203132646U (en) | 2013-02-26 | 2013-02-26 | Automobile oil volume displaying device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111649798A (en) * | 2020-06-30 | 2020-09-11 | 三一专用汽车有限责任公司 | Detection method, vehicle, detection device, and computer-readable storage medium |
| CN113175972A (en) * | 2021-04-09 | 2021-07-27 | 湖南考思特电子有限公司 | Control system of liquid/material level indicating and warning lamp |
| CN113654614A (en) * | 2021-08-24 | 2021-11-16 | 中国科学院沈阳自动化研究所 | Unmanned aerial vehicle irregular oil tank fuel volume measuring and displaying system |
-
2013
- 2013-02-26 CN CN 201320087455 patent/CN203132646U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111649798A (en) * | 2020-06-30 | 2020-09-11 | 三一专用汽车有限责任公司 | Detection method, vehicle, detection device, and computer-readable storage medium |
| CN113175972A (en) * | 2021-04-09 | 2021-07-27 | 湖南考思特电子有限公司 | Control system of liquid/material level indicating and warning lamp |
| CN113654614A (en) * | 2021-08-24 | 2021-11-16 | 中国科学院沈阳自动化研究所 | Unmanned aerial vehicle irregular oil tank fuel volume measuring and displaying system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130814 Termination date: 20170226 |
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| CF01 | Termination of patent right due to non-payment of annual fee |