CN101704341A - Combination meter for cars - Google Patents
Combination meter for cars Download PDFInfo
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- CN101704341A CN101704341A CN200910191467A CN200910191467A CN101704341A CN 101704341 A CN101704341 A CN 101704341A CN 200910191467 A CN200910191467 A CN 200910191467A CN 200910191467 A CN200910191467 A CN 200910191467A CN 101704341 A CN101704341 A CN 101704341A
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- speed
- fuel
- gage
- meter
- water temperature
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Abstract
The invention relates to an automotive combination meter, which mainly comprises a speedometer, a revolution meter, a fuel meter, a water temperature meter and a plurality of signal indicator lamps. The speedometer adopts a singlechip to control a step motor to drive a pointer to display speed. The fuel meter, the revolution meter and the water temperature meter adopt LED lamps for display, wherein both the fuel meter and the revolution meter consist of seven LED lamps which can display normal revolution or flue and give alarm. The water temperature meter adopts a double-color LED lamp for display, wherein the LED lamp emits green light when water temperature is normal and emits red light when the water temperature is high. All working states of the LED indicator lamps are controlled by singlechips and have the advantages of accurate display, stable performance and the like. The combination meter has the advantages that: the dial layout is novel; a step motor and LED indicator lamp combined display mode is adopted; the whole design is humanized; and the instrument performance requirements are met when the cost is reduced.
Description
Technical field
The invention belongs to the vehicular spare parts technical field, be specifically related to a kind of combination instrument function technique of display of car, promptly average speed indicator adopts the simulated pointer formula, and rotating speed, fuel oil and water thermometer adopt the LED indicated number.
Background technology
Existing automobile combination meter has information such as vehicle speed mileage, rotating speed, fuel oil, water temperature mostly and shows, chaufeur can be understood the travel situations of automobile and the working condition of driving engine by the display 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 stepping motor to drive pointer realizes, the cross coil is subject to outward sign 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 stepping motor cost is higher relatively, so be difficult to find an implementation that cost performance is higher.
Summary of the invention
The objective of the invention is to deficiency, a kind of new combination instrument implementation is provided, guarantee low-cost and high-quality at the prior art existence.
The present invention is specifically by the following technical solutions:
A kind of combination meter for cars, the circuit of described combination instrument comprise power supply processing circuit, signal processing 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 mode that described combination instrument adopts stepping motor and LED light to combine realizes the demonstration of each function, wherein said average speed indicator adopts stepping motor to drive pointer-type, described mileage meter uses the LCD liquid crystal display, described speed gage and described fuel gage are the LED light formula, described water thermometer uses the dual-colored LED indicator lamp, and described other warning indicator lamp uses LED light.
The 12V power supply of external storage battery of described combination instrument and ignition lock, 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 car speed sensor and tachogen collection, car speed sensor is connected described impulse singla treatment circuit with tachogen, convert the frequency signal that singlechip controller can be discerned to by the impulse singla 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 mouth 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 travelled distance;
Described single-chip computer control system connects led drive circuit, drives the mode of operation of speed gage and fuel gage indicator lamp by described led drive circuit, is used to show the indication of speed gage, fuel gage and water thermometer.
Car 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 handling, described single-chip computer control system exports a control signal to speed of a motor vehicle motor-drive circuit, coming drive stepping motor to drive pointer and show the speed of a motor vehicle. 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 impulse singla 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 speed gage and described fuel gage 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 speed gage is positioned at the lower left of described average speed indicator, speed gage has 7 oval LED light, wherein print blue on the dial plate of Xia Mian 5 indicator lamp regions, print red on the dial plate of uppermost 2 indicator lamp regions, so below the zone white light-emitting diode is installed, font in the described indicator lamp zone is white translucent construction, in described speed gage, light the different rotating speed that how much shows of quantity by indicator lamp, when the indicator lamp quantity that lights in 5, it is described 5 or when being less than 5 indicator lamps and lighting that print on the described dial plate in the blue zone, the expression rotating speed is in normal working, when the indicator lamp quantity that lights at 6 or when above, be when printing described 1 or 2 indicator lamps in the red zone on the described dial plate and lighting, the expression rotating speed is in alarm condition.Described fuel gage is positioned at the lower right of average speed indicator, be symmetrical structure with described speed gage, also there are 7 oval LED light to show what of amount of fuels, be printed to redness in nethermost 2 the oval LED light regions of described fuel gage, 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 gage is in alarm condition, and described indicator lamp lights many more, and the expression amount of fuel is high more.
Water thermometer adopts the dual-colored LED indicator 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 range of temperatures and is lower than one when setting the early warning temperature value, indicator lamp is red, when engine cooling water temperature is higher than described setting early warning temperature value, described red indicating light flicker.
In this combination instrument, mileage meter uses the LCD Multi-Function Display, and this read-out is that back lighting is blue for just showing design, and font is a black.
Average speed indicator dial plate in the combination instrument of the present invention is printed blue gradual change halation, speed gage and fuel gage are printed blue in the normal condition viewing area, alarm region is printed red, (nethermost two indicator lamps of uppermost two indicator lamps of speed gage and fuel gage zone is an alarm region), dial plate high scale and font are white, and all backlights are White LED.Average speed indicator sends soft blue light behind the lampet electric power starting, and font is clear, brings the chaufeur higher visual and enjoys.
In the present invention, step motor type average speed indicator display precision is higher, integrated circuit control is adopted in stable performance, and reliability is higher, and the speed gage, fuel gage 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, but guaranteed performance also cost-cutting simultaneously.
This display mode of combination instrument of the present invention is compared with normal analog meter and has been saved 3 stepping motors altogether, the low warning indicator 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 a combination instrument structural representation of the present invention;
Fig. 2 is for realizing combination instrument electric apparatus schematic diagram of the present invention;
The vehicle speed signal treatment circuit of Fig. 3 average speed indicator;
Speed of a motor vehicle motor-drive circuit in Fig. 4 average speed indicator;
Fig. 5 tach signal treatment circuit;
Fig. 6 tach signal control and treatment 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 car speed mileage table, 2 average speed indicator pointers, 3 average speed indicator numerals, 4 average speed indicator scales, 5 fuel gages, 6 fuel gage numerals, 7 water thermometers, 8 reset buttons, 9, total kilometrage, 10LCD, 11 subtotal mileage and average fuel consumptions, 12 signal lamps, 13 speed gagees, 14 speed gage numerals
The specific embodiment
The present invention will be further described in detail below in conjunction with accompanying drawing.
Fig. 1 is a combination instrument structural representation of the present invention, combination instrument of the present invention comprises 1 car speed mileage table, 5 fuel gages, 7 water thermometers, 13 speed gagees and 12 signal lamps, is not compositions such as indicator lamp, braking during standstill, machine oil hydraulic, safety air bag fault-indicating lamp, fog tail lamp, SES Service Engine Soon, ABS, EBD, EPS as left and right sides steering indicating light, country beam, battery charge indicator lamp, safety strap.Wherein the dial plate of average speed indicator 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 average speed indicator is that stepping motor drives pointer-type, because stepping motor is monolithic processor controlled by instrument, micro controller system output digital signal is come drive stepping motor, and control accuracy is higher.
Described car speed mileage table 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.Speed gage and fuel gage are respectively seven indicator lamps, 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 indicator lamp of speed gage and fuel gage all is a white light-emitting diode.Wherein on behalf of rotating speed, each indicator lamp of speed gage surpass 1000r/mim and less than 2000r/mim, for example when the rotating speed of driving engine be during greater than 3000r/mim and less than 4000r/mim, 1,2,3 indicator lamp of speed gage all can light.The display mode of fuel gage is similar with speed 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 indicator lamp when being lower than 120 ℃ is higher than 120 ℃ of indicator lamps when being lower than 130 ℃ for red for green, and water thermometer is red flicker when being higher than 130 ℃.
Fig. 2 is a combination instrument electric apparatus schematic diagram of the present invention, the used power supply of combination instrument is storage battery 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 average speed indicator, speed gage, fuel gage and water thermometer show, oil consumption impulse singla A11 is shown in LCD by instrument inner control cell processing after entering instrument, vehicle speed signal is exported by A23 after passing through the gauge control cell processing, and ABS signal A18 passes through lighting of gauge control unit controls ABS and EBD warning indicator lamp and extinguishes.Charging indicator light A4, EPSA13, safety air bag A31, braking liquid level A2, engine oil pressure A5, engine breakdown A17 and safety strap indicator lamp A29 one tip node thermoelectricity make an end connect low level by the outside and control indicator 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 indicator 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 car speed sensor, car speed sensor changes vehicle speed signal into the pulse change signal, input to instrument through the A22 pin, and be input to micro controller system after with the impulse singla shaping by R29 and C20, carry out timing, counting processing by micro controller system. as shown in Figure 4, speed of a motor vehicle motor-drive circuit shows the speed of a motor vehicle through micro controller system output rear drive stepping motor. the stepping motor signal among Fig. 4 is VID29-05, 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 micro controller system through behind the filter shape.Fig. 6 is the display circuit of speed gage, as seen from the figure: tach signal by the micro controller system 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 speed 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 speed gage during less than 6500r/min, and the 6th light-emitting diode sends red alarm light.
Fig. 7 position fuel gage 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 micro controller system after R48 and the processing of C29 filter circuit, finally the fuel oil signal is changed luminance and the quantity that controls seven light-emitting diodes of fuel gage to voltage signal through analog to digital conversion circuit again after being handled by micro controller system, the amount of luminescence of the fuel gage 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 micro controller system 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 micro controller system 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 (8)
1. a combination meter for cars comprises average speed indicator, mileage meter, speed gage, fuel gage, water thermometer and other warning indicator lamp, it is characterized in that:
The mode that described combination instrument adopts stepping motor and LED light to combine realizes the demonstration of each function, wherein said average speed indicator adopts stepping motor to drive pointer-type, described mileage meter uses the LCD LCDs to show, described speed gage and described fuel gage are the LED light formula, described water thermometer uses the dual-colored LED indicator lamp, and described other warning indicator lamp uses LED light to show;
The circuit of described combination instrument comprises power supply processing circuit, impulse singla 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 storage battery of described combination instrument and ignition lock, 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 car speed sensor and tachogen collection, car speed sensor is connected described impulse singla treatment circuit with tachogen, convert the frequency signal that singlechip controller can be discerned to by the impulse singla 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 mouth 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 travelled distance;
Described single-chip computer control system connects led drive circuit, drives the mode of operation of speed gage and fuel gage indicator lamp by described led drive circuit, is used to show the indication of speed gage, fuel gage and water thermometer.
2. 1 described combination meter for cars as requested is characterized in that:
Car 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, to control signal of speed of a motor vehicle motor-drive circuit output, drive stepping motor drives pointer and shows the speed of a motor vehicle after described single chip machine controlling circuit is handled.
3. combination meter for cars according to claim 2 is characterized in that:
Described single-chip computer control system is with described vehicle speed signal accumulative total and show total kilometrage and subtotal mileage in the LCD LCDs, single-chip computer control system is handled the back with the oil consumption impulse singla that collects and show average fuel consumption information in LCDs, and described subtotal mileage operates into zero clearing with average fuel consumption information by reset button and row switches demonstration.
4. according to each described combination meter for cars of claim 1 to 3, it is characterized in that:
Described average speed indicator is positioned at the central authorities of combination instrument, and dial plate is printed to the blue ribbon halation result, and average speed indicator scale and font are white translucent construction, and the background illumination lamp is a white light-emitting diode, and the average speed indicator pointer is red light guide structure.
5. according to each described combination meter for cars of claim 1 to 3, it 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.
6. according to each described combination meter for cars of claim 1 to 3, it is characterized in that:
Described speed gage is positioned at the lower left of described average speed indicator, speed gage has 7 oval LED light, wherein print blue on the dial plate of Xia Mian 5 indicator lamp regions, print red on the dial plate of uppermost 2 indicator lamp regions, so below the zone white light-emitting diode is installed, font in the described indicator lamp zone is white translucent construction, in described speed gage, light the different rotating speed that how much shows of quantity by indicator lamp, when the indicator lamp quantity that lights in 5, it is described 5 or when being less than 5 indicator lamps and lighting that print on the described dial plate in the blue zone, the expression rotating speed is in normal working, when the indicator lamp quantity that lights at 6 or when above, when printing described 1 or 2 indicator lamps in the red zone on the promptly described dial plate and lighting, the expression rotating speed is in alarm condition.
7. combination meter for cars according to claim 6 is characterized in that:
Described fuel gage is positioned at the lower right of average speed indicator, be symmetrical structure with described speed gage, also there are 7 oval LED light to show what of amount of fuels, be printed to redness in nethermost 2 the oval LED light regions of described fuel gage, 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 gage is in alarm condition, and described indicator lamp lights many more, and the expression amount of fuel is high more.
8. according to each described combination meter for cars of claim 1 to 3, it is characterized in that:
Described water thermometer is positioned at fuel gage, indicate with dual-colored LED, this double-colored green and red the normal and high of engine cooling water temperature of representing respectively of being respectively, 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 range of temperatures and is lower than one when setting the early warning temperature value, indicator lamp is red, when engine cooling water temperature is higher than described setting early warning temperature value, and described red indicating light flicker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910191467A CN101704341A (en) | 2009-11-13 | 2009-11-13 | Combination meter for cars |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910191467A CN101704341A (en) | 2009-11-13 | 2009-11-13 | Combination meter for cars |
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|---|---|
| CN101704341A true CN101704341A (en) | 2010-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910191467A Pending CN101704341A (en) | 2009-11-13 | 2009-11-13 | Combination meter for cars |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101969187A (en) * | 2010-11-03 | 2011-02-09 | 苏州合欣美电子科技有限公司 | Protective circuit for direct-current motor |
| CN102761303A (en) * | 2011-04-28 | 2012-10-31 | 朱利和 | Motor rotating speed control device |
| CN102963256A (en) * | 2012-12-05 | 2013-03-13 | 山东省科学院自动化研究所 | Universal automobile gauge signal converter and conversion method thereof |
| CN103129392A (en) * | 2011-11-30 | 2013-06-05 | 株式会社电装 | In-vehicle display apparatus |
| CN104176046A (en) * | 2014-09-12 | 2014-12-03 | 哈尔滨恒誉名翔科技有限公司 | Automobile combination instrument based on MC9S12XHY256 |
| TWI562107B (en) * | 2015-04-23 | 2016-12-11 | Internat Liquid Crystal Display Co Ltd | Display |
| CN108583476A (en) * | 2018-05-22 | 2018-09-28 | 中国重汽集团成都王牌商用车有限公司 | A kind of CAN bus communication assembling system |
| CN109435960A (en) * | 2018-10-29 | 2019-03-08 | 成都云科新能汽车技术有限公司 | A kind of control method for vehicle |
| CN109682404A (en) * | 2018-12-24 | 2019-04-26 | 彭希南 | Nuclear power station spent fuel water temperature and Water Level Measuring Meters |
-
2009
- 2009-11-13 CN CN200910191467A patent/CN101704341A/en active Pending
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101969187A (en) * | 2010-11-03 | 2011-02-09 | 苏州合欣美电子科技有限公司 | Protective circuit for direct-current motor |
| CN102761303A (en) * | 2011-04-28 | 2012-10-31 | 朱利和 | Motor rotating speed control device |
| CN103129392B (en) * | 2011-11-30 | 2015-06-17 | 株式会社电装 | In-vehicle display apparatus |
| CN103129392A (en) * | 2011-11-30 | 2013-06-05 | 株式会社电装 | In-vehicle display apparatus |
| CN102963256B (en) * | 2012-12-05 | 2015-11-11 | 山东省科学院自动化研究所 | A kind of general auto meter signal converter and conversion method thereof |
| CN102963256A (en) * | 2012-12-05 | 2013-03-13 | 山东省科学院自动化研究所 | Universal automobile gauge signal converter and conversion method thereof |
| CN104176046A (en) * | 2014-09-12 | 2014-12-03 | 哈尔滨恒誉名翔科技有限公司 | Automobile combination instrument based on MC9S12XHY256 |
| TWI562107B (en) * | 2015-04-23 | 2016-12-11 | Internat Liquid Crystal Display Co Ltd | Display |
| CN108583476A (en) * | 2018-05-22 | 2018-09-28 | 中国重汽集团成都王牌商用车有限公司 | A kind of CAN bus communication assembling system |
| CN108583476B (en) * | 2018-05-22 | 2021-10-29 | 中国重汽集团成都王牌商用车有限公司 | CAN bus communication combined system |
| CN109435960A (en) * | 2018-10-29 | 2019-03-08 | 成都云科新能汽车技术有限公司 | A kind of control method for vehicle |
| CN109682404A (en) * | 2018-12-24 | 2019-04-26 | 彭希南 | Nuclear power station spent fuel water temperature and Water Level Measuring Meters |
| CN109682404B (en) * | 2018-12-24 | 2020-10-30 | 彭希南 | Water temperature and water level measuring instrument for dead nuclear fuel pool of nuclear power station |
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Application publication date: 20100512 |