CN201787965U - Combination meter for automobile - Google Patents
Combination meter for automobile Download PDFInfo
- Publication number
- CN201787965U CN201787965U CN2009202071237U CN200920207123U CN201787965U CN 201787965 U CN201787965 U CN 201787965U CN 2009202071237 U CN2009202071237 U CN 2009202071237U CN 200920207123 U CN200920207123 U CN 200920207123U CN 201787965 U CN201787965 U CN 201787965U
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- speedometer
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Abstract
The utility model relates to a combination meter for an automobile. The combination meter for the automobile comprises a speedometer, a tachometer, a fuel gauge, a water temperature gauge and signal indicating lamps, wherein the speedometer adopts a single-chip to control a stepping motor to drive a pointer for display. The fuel gauge, the tachometer and the water temperature gauge are displayed through the LED lamps, and the fuel gauge and the tachometer comprise seven LEDs respectively, thereby displaying normal rotational speed and fuel oil and having the warning function. The water temperature gauge is displayed through a two-color LED, the LED glows green when the water temperature is normal, and the LED glows red when the water temperature is high. The working conditions of all the LED indicating lamps are controlled by the single-chip, and the combination meter has the advantages of precise display and stable properties. The dial of the combination meter for the automobile is arranged newly, and adopts the display mode of combining the stepping motor and the LED indicating lamps, the whole design is human-oriented, the performance of the meter is qualified, and the cost is reduced at the same time.
Description
Technical field
The utility model belongs to the auto parts machinery technical field, is specifically related to a kind of combination instrument function display technique of car.
Background technology
Existing automobile combination meter has information such as vehicle speed mileage, rotating speed, fuel oil, water temperature mostly and shows, the driver can understand the travel situations of automobile and the working condition of engine by the video data on the combination instrument, improves travel safety.The mode that each gauge outfit in present most of combination instrument all adopts cross coil or stepper motor to drive pointer realizes, the cross coil is subject to external signal and disturbs, display precision is poor, performance is unreliable, take up room, increase the dial plate area, and then influence the visual field, and the stepper motor cost is higher relatively, so be difficult to find an implementation that cost performance is higher.
Summary of the invention
The purpose of this utility model is to provide a kind of new combination instrument implementation at the deficiency of prior art existence, guarantees low-cost and high-quality.
The utility model is specifically by the following technical solutions:
A kind of combination meter for cars comprises speedometer, mileometer, tachometer gage, fuel gauge, water-thermometer and other alarm lamp, it is characterized in that:
The mode that described combination instrument adopts stepper motor and LED light to combine realizes the demonstration of each function, wherein said speedometer adopts stepper motor to drive pointer-type, described mileometer uses the LCD LCDs to show, described tachometer gage and described fuel gauge are the LED light formula, described water-thermometer uses the dual-colored LED pilot lamp, and described other alarm lamp uses LED light to show;
The circuit of described combination instrument comprises power supply processing circuit, pulse signal treatment circuit, analog to digital conversion circuit, single-chip computer control system, speed of a motor vehicle motor-drive circuit, liquid crystal display drive circuit, led drive circuit;
The 12V power supply of external accumulator of described combination instrument and ignition switch, and after described power supply processing circuit is handled, connect single-chip computer control system, output 5V power supply is supplied with single-chip computer control system;
Vehicle speed signal, tach signal are respectively by vehicle speed sensor and speed probe collection, vehicle speed sensor is connected described pulse signal treatment circuit with speed probe, convert the frequency signal that singlechip controller can be discerned to by the pulse signal treatment circuit, connect single-chip computer control system again, input to single-chip computer control system;
Fuel oil signal, water temperature signal are respectively by fuel sensor and cooling-water temperature sensor collection, fuel sensor is connected analog to digital conversion circuit with cooling-water temperature sensor, fuel oil signal, water temperature signal are after analog-digital conversion circuit as described is handled, after being converted to voltage signal, connect single-chip computer control system again, input to single-chip computer control system;
The output terminal of described single-chip computer control system links to each other with speed of a motor vehicle motor-drive circuit, and drive stepping motor drives pointer and shows the speed of a motor vehicle;
Described single-chip computer control system connects liquid crystal display drive circuit, and the vehicle speed signal after output is handled is by described liquid crystal display drive circuit display automobile distance travelled;
Described single-chip computer control system connects led drive circuit, drives the duty of tachometer gage and fuel gauge pilot lamp by described led drive circuit, is used to show the indication of tachometer gage, fuel gauge and water-thermometer.
Vehicle speed sensor is converted into frequency signal with the vehicle speed signal that collects and inputs to single-chip computer control system in the described combination instrument, after described single-chip computer control system is handled,, come drive stepping motor to drive pointer and show the speed of a motor vehicle to control signal of speed of a motor vehicle motor-drive circuit output.Described single-chip computer control system is accumulated at described vehicle speed signal and shows total kilometrage and subtotal mileage in the LCD LCDs, single-chip computer control system is handled the back with the oil consumption pulse signal that collects and show fuel consumption information in LCDs, and described subtotal mileage and fuel consumption information carry out zero clearing and switch showing by switching push button.
Described tachometer gage and described fuel gauge use 7 LED to form respectively, show the normal condition and the alarm condition of rotating speed and fuel oil, and corresponding LED light can be sent the ruddiness warning when promptly high and fuel oil hanged down when rotating speed.Wherein, described tachometer gage is positioned at the lower left of described speedometer, tachometer gage has 7 oval LED light, wherein print blue on the dial plate of Xia Mian 5 pilot lamp regions, print red on the dial plate of uppermost 2 pilot lamp regions, so below the zone white light-emitting diode is installed, font in the described pilot lamp zone is white translucent construction, in described tachometer gage, light the different rotating speed that how much shows of quantity by pilot lamp, when the pilot lamp quantity that lights in 5, it is described 5 or when being less than 5 pilot lamp and lighting that print on the described dial plate in the blue zone, the expression rotating speed is in normal operating conditions, when the pilot lamp quantity that lights at 6 or when above, be when printing described 1 or 2 pilot lamp in the red zone on the described dial plate and lighting, the expression rotating speed is in alarm condition.
Described fuel gauge is positioned at the lower right of speedometer, be symmetrical structure with described tachometer gage, also there are 7 oval LED light to show what of amount of fuel, be printed to redness in nethermost 2 the oval LED light regions of described fuel gauge, above 5 oval LED light regions print blue, when having only the described LED lamp that is printed to red area to light, the expression amount of fuel is few, fuel gauge is in alarm condition, and described pilot lamp lights many more, and the expression amount of fuel is high more.
Water-thermometer adopts the dual-colored LED pilot lamp, and this bi-colour light is green and red, temperature indicator green light when engine coolant is in normal temperature range, this lantern festival warning that glows when engine coolant exceeds normal range.This bi-colour LED is for green when engine cooling water temperature is normal water temperature range, when engine cooling water temperature is higher than the normal water temperature range and is lower than one when setting the early warning temperature value, pilot lamp is red, when engine cooling water temperature is higher than described setting early warning temperature value, described red led flicker.
In this combination instrument, mileometer uses the LCD Multi-Function Display, and this display screen is that back lighting is blue for just showing design, and font is a black.
Described speedometer is positioned at the central authorities of combination instrument, and dial plate is printed to the blue ribbon halation result, and speedometer scale and font are white translucent construction, and the background illumination lamp is a white light-emitting diode, and the speedometer pointer is red light guide structure.
Described LCD LCDs is blue backlight, white font, shows subtotal mileage, accumulative mileage and average fuel consumption information in the LCD LCDs.
Speedometer dial plate in the combination instrument of the present utility model is printed blue gradual change halation, tachometer gage and fuel gauge are printed blue in the normal condition viewing area, alarm region is printed red, (nethermost two pilot lamp of uppermost two pilot lamp of tachometer gage and fuel gauge zone is an alarm region), dial plate high scale and font are white, and all backlights are White LED.Speedometer sends soft blue light behind the lampet electric power starting, and font is clear, brings driver's higher visual and enjoys.The speedometer pointer is red light guide structure.
In the utility model, step motor type speedometer display precision is higher, integrated circuit control is adopted in stable performance, and reliability is higher, and the tachometer gage, fuel gauge and the water-thermometer that adopt LED to show also are to adopt integrated circuit control, reliability is higher, and the LED low price, and the life-span is longer, two kinds of demonstrations combine and can show required function, and guaranteed performance also can reduce cost simultaneously.
This display mode of combination instrument of the present utility model is compared with normal pointer instrument and has been saved 3 stepper motors altogether, the low alarm lamp of fuel oil, so this table has multiple functionally, has the minimum characteristics of cost under the prerequisite of stable performance again.
Description of drawings
Fig. 1 is the utility model combination instrument structural representation;
Fig. 2 is for realizing the utility model combination instrument electric device schematic diagram;
The vehicle speed signal treatment circuit of Fig. 3 speedometer;
Speed of a motor vehicle motor-drive circuit in Fig. 4 speedometer;
Fig. 5 tach signal treatment circuit;
Fig. 6 tach signal control processing circuit;
Fig. 7 fuel oil signal processing circuit;
Fig. 8 water temperature signal treatment circuit;
Fig. 9 temperature indicator driving circuit.
Fig. 1 is by forming with the lower part: 1 speedometer, 2 speedometer pointers, 3 speedometer numerals, 4 speedometer scales, 5 fuel gauges, 6 fuel gauge numerals, 7 water-thermometers, 8 reset button, 9, total kilometrage, 10LCD, 11 subtotal mileage and average fuel consumptions, 12 signal lamps, 13 tachometer gages, 14 tachometer gage numerals
Embodiment
The utility model is described in more detail below in conjunction with accompanying drawing.
Fig. 1 is the utility model combination instrument structural representation, combination instrument of the present utility model comprises 1 speedometer, 5 fuel gauges, 7 water-thermometers, 13 tachometer gages and 12 signal lamps, is not compositions such as pilot lamp, parking braking, machine oil hydraulic, air bag malfunction indicator lamp, Rear Fog Lamp, SES Service Engine Soon, ABS, EBD, EPS as left and right sides steering indicating light, high beam, CHARGE, securing band.Wherein the dial plate of speedometer is at the blue gradual change halation of scale zone printing, numeral 3 and scale 4 are printed to white printing opacity, the implementation of speedometer is that stepper motor drives pointer-type, because stepper motor is monolithic processor controlled by instrument, single-chip microcomputer output digital signal is come drive stepping motor, and control accuracy is higher.
Described speedometer 1 uses the LCD liquid crystal display, and the LCD information display screen can show accumulative mileage, subtotal mileage and average fuel consumption 11, and subtotal mileage, fuel consumption information and zero clearing are all by reset button 8 switching controls.Tachometer gage and fuel gauge are respectively seven pilot lamp, and 6 and 14 among the normal condition indicating area on dial plate such as Fig. 1 prints blue, print redness at alarm region, and the pilot lamp of tachometer gage and fuel gauge all is a white light-emitting diode.Wherein on behalf of rotating speed, each pilot lamp of tachometer gage surpass 1000r/mim and less than 2000r/mim, for example when the rotating speed of engine be during greater than 3000r/mim and less than 4000r/mim, 1,2,3 pilot lamp of tachometer gage all can light.The display mode of fuel gauge is similar with tachometer gage, and bright more of signal lamp represent the fuel oil in the fuel tank also many more more.Water-thermometer is dual-colored LED indication, and normal water temperature pilot lamp when being lower than 120 ℃ is higher than 120 ℃ of pilot lamp when being lower than 130 ℃ for red for green, and water-thermometer is red flicker when being higher than 130 ℃.
Fig. 2 is the utility model combination instrument electric device schematic diagram, the used power supply of combination instrument is accumulator electricity A6 and priming supply A7 as seen from the figure, vehicle speed signal A22 wherein, tach signal A21, fuel oil signal A19 and water temperature signal A20 enter after the instrument through after the instrument inner control cell processing by speedometer, tachometer gage, fuel gauge and water-thermometer show, oil consumption pulse signal A11 is shown in LCD by instrument inner control cell processing after entering instrument, vehicle speed signal process instrument control module is handled the back by A23 output, and ABS signal A18 controls lighting of ABS and EBD alarm lamp through the instrument control module and extinguishes.Charging indicator light A4, EPSA13, air bag A31, braking liquid level A2, engine oil pressure A5, engine failure A17 and securing band pilot lamp A29 one tip node thermoelectricity make an end connect low level by the outside and control pilot lamp and light.Full beam indicator lamp A15 connects low level by internal interface battery feed outside and lights.About turn to A16, A1 and back mist pilot lamp A12 to connect high level by grounded outer to light in gauge internal.That the lighting pilot lamp in the instrument uses is the power supply A24 of lampet.
Fig. 3 is the vehicle speed signal treatment circuit, vehicle speed signal is input to instrument inner control unit by vehicle speed sensor, vehicle speed sensor changes vehicle speed signal into the pulse change signal, input to instrument through the A22 pin, and be input to single-chip microcomputer by R29 and C20 after with the pulse signal shaping, by single-chip microcomputer carry out timing, counting is handled.As shown in Figure 4, speed of a motor vehicle motor-drive circuit shows the speed of a motor vehicle through single-chip microcomputer output rear drive stepper motor.Stepper motor signal among Fig. 4 is VID29-05, and the characteristics of this motor are the precision height, and the life-span is long.
Fig. 5 is the tach signal treatment circuit, and tach signal is the frequency signal by engine speed sensor output, exports to single-chip microcomputer through behind the filter shape.Fig. 6 is the display circuit of tachometer gage, as seen from the figure: tach signal by the single-chip microcomputer computing after through IC4 and IC5 D/A converting circuit, frequency signal is converted into voltage signal, control the luminance and the quantity of the light emitting diode of tachometer gage.Just can know the scope of rotating speed according to the quantity of lumination of light emitting diode, when rotating speed is higher than 5500r/min and the bright 1-6 light emitting diode of tachometer gage during less than 6500r/min, and the 6th light emitting diode sends red alarm light.
Fig. 7 position fuel gauge signal processing circuit, to be fuel sensor number be converted into electric signal to what oil mass changed to the fuel oil signal, by inputing to single-chip microcomputer after R48 and the processing of C29 filtering circuit, finally the fuel oil conversion of signals is controlled the luminance and the quantity of seven light emitting diodes of fuel gauge to voltage signal through analog to digital conversion circuit again after being handled by single-chip microcomputer, the amount of luminescence of the fuel gauge fuel oil in many representatives fuel tank more is also many more.
Fig. 8 is the water temperature signal treatment circuit, and cooling-water temperature sensor is the temperature inversion of engine cooling water a resistance signal, is input to combination instrument by the A20 pin, and as can be seen from Figure 8, water temperature signal is undertaken exporting to single-chip microcomputer after the filtering by R46 in the circuit and C27.Fig. 9 is the control circuit of temperature indicator, controls the luminance of double-colored water temperature LED as seen from the figure after the signal that single-chip microcomputer is handled well passes through Q5 and Q6 amplification respectively.Light emitting diode green light interval scale engine cooling water is normal, when the light emitting diode warning interval scale engine cooling water height that glows.
Claims (6)
1. a combination meter for cars comprises speedometer, mileometer, tachometer gage, fuel gauge, water-thermometer and other alarm lamp, it is characterized in that:
The mode that described combination instrument adopts stepper motor and LED light to combine realizes the demonstration of each function, wherein said speedometer adopts stepper motor to drive pointer-type, described mileometer uses the LCD LCDs to show, described tachometer gage and described fuel gauge are the LED light formula, described water-thermometer uses the dual-colored LED pilot lamp, and described other alarm lamp uses LED light to show;
The circuit of described combination instrument comprises power supply processing circuit, pulse signal treatment circuit, analog to digital conversion circuit, single-chip computer control system, speed of a motor vehicle motor-drive circuit, liquid crystal display drive circuit, led drive circuit;
The 12V power supply of external accumulator of described combination instrument and ignition switch, and after described power supply processing circuit is handled, connect single-chip computer control system, output 5V power supply is supplied with single-chip computer control system;
Vehicle speed signal, tach signal are respectively by vehicle speed sensor and speed probe collection, vehicle speed sensor is connected described pulse signal treatment circuit with speed probe, convert the frequency signal that singlechip controller can be discerned to by the pulse signal treatment circuit, connect single-chip computer control system again, input to single-chip computer control system;
Fuel oil signal, water temperature signal are respectively by fuel sensor and cooling-water temperature sensor collection, fuel sensor is connected analog to digital conversion circuit with cooling-water temperature sensor, fuel oil signal, water temperature signal are after analog-digital conversion circuit as described is handled, after being converted to voltage signal, connect single-chip computer control system again, input to single-chip computer control system;
The output terminal of described single-chip computer control system links to each other with speed of a motor vehicle motor-drive circuit, and drive stepping motor drives pointer and shows the speed of a motor vehicle;
Described single-chip computer control system connects liquid crystal display drive circuit, and the vehicle speed signal after output is handled is by described liquid crystal display drive circuit display automobile distance travelled;
Described single-chip computer control system connects led drive circuit, drives the duty of tachometer gage and fuel gauge pilot lamp by described led drive circuit, is used to show the indication of tachometer gage, fuel gauge and water-thermometer.
2. combination meter for cars according to claim 1 is characterized in that:
Described speedometer is positioned at the central authorities of combination instrument, and dial plate is printed to the blue ribbon halation result, and speedometer scale and font are white translucent construction, and the background illumination lamp is a white light-emitting diode, and the speedometer pointer is red light guide structure.
3. combination meter for cars according to claim 1 and 2 is characterized in that:
Described LCD LCDs is blue backlight, white font, shows subtotal mileage, accumulative mileage and average fuel consumption information in the LCD LCDs.
4. combination meter for cars according to claim 1 and 2 is characterized in that:
Described tachometer gage is positioned at the lower left of described speedometer, tachometer gage has 7 oval LED light, wherein print blue on the dial plate of Xia Mian 5 pilot lamp regions, print red on the dial plate of uppermost 2 pilot lamp regions, so below the zone white light-emitting diode is installed, the font in the described pilot lamp zone is white translucent construction.
5. combination meter for cars according to claim 1 and 2 is characterized in that:
Described fuel gauge is positioned at the lower right of speedometer, be symmetric arrangement with described tachometer gage, 7 oval LED light are also arranged, are printed to redness in nethermost 2 the oval LED light regions of described fuel gauge, above 5 oval LED light regions print blue.
6. combination meter for cars according to claim 1 and 2 is characterized in that:
Described water-thermometer is positioned at fuel gauge, and with the dual-colored LED indication, this double-colored green and red that is respectively is represented the normal and high of engine cooling water temperature respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202071237U CN201787965U (en) | 2009-11-13 | 2009-11-13 | Combination meter for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202071237U CN201787965U (en) | 2009-11-13 | 2009-11-13 | Combination meter for automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201787965U true CN201787965U (en) | 2011-04-06 |
Family
ID=43819924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202071237U Expired - Fee Related CN201787965U (en) | 2009-11-13 | 2009-11-13 | Combination meter for automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201787965U (en) |
-
2009
- 2009-11-13 CN CN2009202071237U patent/CN201787965U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20110406 Termination date: 20141113 |
|
| EXPY | Termination of patent right or utility model |