CN201672957U - Automobile fuel meter digitalized device - Google Patents
Automobile fuel meter digitalized device Download PDFInfo
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- CN201672957U CN201672957U CN2010201814998U CN201020181499U CN201672957U CN 201672957 U CN201672957 U CN 201672957U CN 2010201814998 U CN2010201814998 U CN 2010201814998U CN 201020181499 U CN201020181499 U CN 201020181499U CN 201672957 U CN201672957 U CN 201672957U
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- liquid level
- microprocessor
- digitalizer
- automobile oil
- automobile
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Abstract
The utility model belongs to the technical field of automobile manufacturing and relates to an automobile fuel meter digitalized device, which comprises a microprocessor, a liquid level sensor, an AD conversion module, a display module and a fuel lean alarm circuit. Liquid level signals outputted by the liquid level sensor are transmitted to the microprocessor after processing and further analogue and digital conversion of the AD conversion module, the microprocessor converts the inputted liquid level signals into volume signals, and volume information of liquid inside a fuel tank is outputted via the display module. The multifunctional automobile fuel meter digitalized device leads automobile fuel consumption to be clear at a glance, brings convenience to users, simultaneously performs the function of energy saving, and can further perform the function of fuel volume monitoring for some logistic companies.
Description
Technical field
The utility model relates to a kind of automotive oil tank automatically to be measured and display device, particularly a kind ofly collects the multi-purpose vehicle(MPV) oil meter digitalizer that digital display, printing and clock are one.
Background technology
Existing various model automobile oil level measuring system, adopt mechanical type or electromagnetic type mostly, drive slide rheostat by a float often, change the size of passing through the slide rheostat electric current by change in resistance, and then influence the intensity in magnetic field, change the anglec of rotation of oil mass gauge pointer.
Because fuel tank itself is irregular, the liquid level of fuel tank can not react Fuel Oil Remaining exactly, has so just caused orthodox car first wife's oil-level measurement and the indication of pointer oil meter to exist a series of defectives such as mission life is short, data error is big, display precision is low.In real process, some user has to often refuel for guaranteeing normal vehicle operation, and oil also can appear not having on the way because of the oil mass of not knowing fuel tank in some user, thereby the situation that influence is travelled also can increase many troubles to the user virtually.
Meanwhile, along with the rise of motor vehicle oil price lattice, people rise steadily to automobile fuel consumption degree of concern, are appealing that strongly a kind of measuring accuracy is higher, the appearance of the oil measurement equipment that more can intuitively show.
Summary of the invention
The purpose of this utility model overcomes the above-mentioned deficiency of prior art, and provide a kind of and can directly demonstrate current fuel oil value, the measuring accuracy height, the convenient novel automobile oil gauge digitalizer of intuitive display has clock simultaneously and shows and printing function.For this reason, the utility model adopts following technical scheme:
A kind of automobile oil gauge digitalizer, comprise microprocessor, liquid level sensor, AD modular converter, display module, oil starvation warning circuit, the liquid level signal of described liquid level sensor output after treatment, after passing through the analog to digital conversion of AD modular converter again, be admitted to microprocessor, described microprocessor converts after the volume signals liquid level signal of input to by liquid in the display module output fuel tank volume information.
As preferred implementation, described liquid level sensor is transformed to voltage signal for the capacitance level transducer of output 4～20mA simulating signal, the liquid level signal of this sensor output after passing through the processing of I/V translation circuit and low-pass filter circuit successively; Described automobile oil gauge digitalizer also comprises the printer that links to each other with the output interface of microprocessor; Described automobile oil gauge digitalizer also comprises the clock module that links to each other with the port of microprocessor.
The beneficial effects of the utility model are as follows:
1, a kind of novel automobile oil gauge digitalizer that provides of the utility model, design is unique, and line is simple, need not to change Oiltank structure and vehicle structure, at the original sensor interface new sensor is installed and is got final product, and is easy for installation.
2, the utility model adopts microprocessor processes, and accurate calculating has been passed through in inside, the principle science, and the measuring accuracy height, precision can reach 0.1 liter.
3, the used capacitance type sensor of the utility model adopts miniature tunnel construction sections bank structure, the liquid level foam that has produced when thoroughly having overcome oiling and road bump and the false oil level that produces; Also adopted software and hardware filtering in this device simultaneously, the reliability height, stable performance, antijamming capability is strong.
4, the utility model adopts liquid crystal display, and is convenient directly perceived, and functions such as clock demonstration and printing also are provided simultaneously.
5, the utility model peripheral hardware light emitting diode also has the oil starvation warning function.
In a word, under current energy-conservation situation, multi-purpose vehicle(MPV) oil meter digitalizer of the present utility model makes the automobile fuel consumption come into plain view, and has brought the energy-conservation effect of also having played simultaneously easily to the user, concerning some logistics companies, can also play the effect of oil mass monitoring in addition.And the utility model volume is little, and external line is simple, is applicable to the motor vehicles fuel tank of any model.
Description of drawings
Fig. 1 overall module map of the present utility model.
Fig. 2 forward path basic structure of the present utility model.
Embodiment
As shown in Figure 1, this automobile oil mass digital display device is made up of microprocessor, liquid level sensor, AD modular converter, display module, oil starvation warning circuit, printer, clock circuit and other power circuits etc.
(1) system forward input channel part (sensor and AD modular converter)
The system forward input channel partly comprises sensor and AD modular converter, as shown in Figure 2.
Fuel level sensor: adopt the condenser type fuel level sensor, its transducing part is a coaxial container, causes the variation of electric capacity between sensor housing and the induction electrode after oil enters container.This variable quantity by circuit conversion and carry out accurate linearity and temperature compensation, output 4～20mA standard signal.The current signal transmission can obtain better anti-jamming capability.The sensor measurement oil level precision height that the utility model adopts; Power consumption is economized, and power consumption is 20mA (traditional float-type transmitter is more than the 100mA) only; Firm in structure; Shock-resistant anti-vibration, the life-span is long.
I/V conversion and hardware filtering are handled: because sensor output 4～20mA, and the input signal of AD transducer is a voltage signal, therefore is admitted to the AD transducer after the current signal of sensor output is handled through I/V translation circuit and low-pass filter circuit.
Microprocessor: storing in the microprocessor the liquid level information translation is the form of liquid volume information in the mailbox, and microprocessor is tabled look-up by inside according to the digital liquid level signal of input, obtains the current oil value, and shows in liquid crystal.
(2) display module
LCD MODULE is selected low-voltage, low-power consumption for use, parameter storage usefulness low-voltage, the liquid crystal display mode of serial programmable electric erasable.
(3) printer circuitry design
The stable performance of bright bright serial temperature-sensitive mini-printer is durable, and the structure function modern design has following feature:
Print the exploitation order very strong compatibility is arranged, have and lack the paper detection, automatically go up the paper function, multiple form Chinese character, character setting and powerful figure are self-defined, the self-defined print command of character can be realized printing clear, attractive in appearance, carry GB I and II Chinese character base, a plurality of western language character libraries, the string and the interface of standard are provided, can conveniently link to each other with various device.We use the printer of parallel interface, and the connection principle of printer is very easy, as long as printer data is received line link to each other with microprocessor I/O mouth, ground wire is continuous, just can realize communicating by letter between printer and the main frame.
(4) clock module
Produce date and time, and link to each other with the input port of microprocessor.
Below in conjunction with Fig. 1 and Fig. 2 embodiment is described:
The concrete course of work: oil level signal is a measured signal, is output as 4～20mA current signal through sensor, is being transformed to voltage signal by I/V conversion and low-pass filtering, as the input of A/D.The A/D transducer is converted to digital signal to the voltage signal of simulation, exports to microprocessor.Through the processing of microprocessor, mainly be to table look-up by inside, obtain the current oil value, and can in liquid crystal, show.Clock circuit can to year, month, day, Sunday, the time, minute, second carries out timing.By the peripheral hardware button, be provided with three kinds of display modes, be respectively to show the oil mass value, demonstration time and showing date, and can pass through button date correction and time.This device also provides printing function, and by the printing button is set, the control printer prints current time and institute's allowance value.Less or during near certain value, lumination of light emitting diode provides warning when oil mass.
Claims (4)
1. automobile oil gauge digitalizer, comprise microprocessor, liquid level sensor, AD modular converter, display module, oil starvation warning circuit, it is characterized in that, the liquid level signal of described liquid level sensor output after treatment, after passing through the analog to digital conversion of AD modular converter again, be admitted to microprocessor, described microprocessor converts after the volume signals liquid level signal of input to by liquid in the display module output fuel tank volume information.
2. automobile oil gauge digitalizer according to claim 1, it is characterized in that, described liquid level sensor is the capacitance level transducer of output 4～20mA simulating signal, the liquid level signal of this sensor output is transformed to voltage signal after passing through the processing of I/V translation circuit and low-pass filter circuit successively.
3. automobile oil gauge digitalizer according to claim 1 is characterized in that, described automobile oil gauge digitalizer also comprises the printer that links to each other with the output interface of microprocessor.
4. automobile oil gauge digitalizer according to claim 1 and 2 is characterized in that, described automobile oil gauge digitalizer also comprises the clock module that links to each other with the port of microprocessor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201814998U CN201672957U (en) | 2010-05-06 | 2010-05-06 | Automobile fuel meter digitalized device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201814998U CN201672957U (en) | 2010-05-06 | 2010-05-06 | Automobile fuel meter digitalized device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201672957U true CN201672957U (en) | 2010-12-15 |
Family
ID=43330369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201814998U Expired - Fee Related CN201672957U (en) | 2010-05-06 | 2010-05-06 | Automobile fuel meter digitalized device |
Country Status (1)
| Country | Link |
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| CN (1) | CN201672957U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102494728A (en) * | 2011-12-29 | 2012-06-13 | 深圳市隆科电子有限公司 | Metering assisting system and metering method for automobile fuel meter |
| CN102506957A (en) * | 2011-11-21 | 2012-06-20 | 江西江铃汽车集团改装车有限公司 | Liquid level detection display device |
| CN103105179A (en) * | 2011-11-10 | 2013-05-15 | 北汽福田汽车股份有限公司 | Oil consumption expense displaying and reminding device and vehicle and oil consumption expense displaying method |
| CN103323075A (en) * | 2013-06-28 | 2013-09-25 | 成都众易通科技有限公司 | Fuel level sensor |
| CN103323076A (en) * | 2013-06-28 | 2013-09-25 | 成都众易通科技有限公司 | Oil level measurement conversion circuit |
| CN103754153A (en) * | 2013-12-26 | 2014-04-30 | 柳州正菱集团有限公司 | Fuel tank oil level alarm mode |
| CN104568048A (en) * | 2015-01-27 | 2015-04-29 | 张家港亚楠汽车电器有限公司 | Vehicle oil quantity monitoring device |
-
2010
- 2010-05-06 CN CN2010201814998U patent/CN201672957U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103105179A (en) * | 2011-11-10 | 2013-05-15 | 北汽福田汽车股份有限公司 | Oil consumption expense displaying and reminding device and vehicle and oil consumption expense displaying method |
| CN102506957A (en) * | 2011-11-21 | 2012-06-20 | 江西江铃汽车集团改装车有限公司 | Liquid level detection display device |
| CN102494728A (en) * | 2011-12-29 | 2012-06-13 | 深圳市隆科电子有限公司 | Metering assisting system and metering method for automobile fuel meter |
| CN102494728B (en) * | 2011-12-29 | 2015-06-17 | 深圳市隆科电子有限公司 | Metering assisting system and metering method for automobile fuel meter |
| CN103323075A (en) * | 2013-06-28 | 2013-09-25 | 成都众易通科技有限公司 | Fuel level sensor |
| CN103323076A (en) * | 2013-06-28 | 2013-09-25 | 成都众易通科技有限公司 | Oil level measurement conversion circuit |
| CN103754153A (en) * | 2013-12-26 | 2014-04-30 | 柳州正菱集团有限公司 | Fuel tank oil level alarm mode |
| CN104568048A (en) * | 2015-01-27 | 2015-04-29 | 张家港亚楠汽车电器有限公司 | Vehicle oil quantity monitoring device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101215 Termination date: 20120506 |