CN201439308U - Digital instrumentation for vehicles - Google Patents
Digital instrumentation for vehicles Download PDFInfo
- Publication number
- CN201439308U CN201439308U CN2009200753778U CN200920075377U CN201439308U CN 201439308 U CN201439308 U CN 201439308U CN 2009200753778 U CN2009200753778 U CN 2009200753778U CN 200920075377 U CN200920075377 U CN 200920075377U CN 201439308 U CN201439308 U CN 201439308U
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- China
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- control unit
- liquid crystal
- crystal display
- unit
- automobile
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- Expired - Fee Related
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Abstract
The utility model discloses a digital instrumentation for vehicles, which comprises a control unit, a signal acquisition unit, a bus receiving unit, a liquid crystal display screen drive unit and a liquid crystal display screen, wherein the signal acquisition unit is connected with all external modules or switches through rigid lines and is used to convert the external signal and then transmit the signal to the control unit; the bus receiving unit is connected with a vehicle bus, and converts the bus information and then transmits the bus information to the control unit; the control unit is connected with the signal acquisition unit and the bus receiving unit, and is used to process the received external signal and the received bus information and then transmit the received external signal and the received bus information to a liquid crystal display screen drive unit; the liquid crystal display screen drive unit is connected with the liquid crystal display screen and is used to drive the liquid crystal display circuit; and the liquid crystal display screen is used to display the processed data. The digital instrumentation for the vehicles has high display accuracy and intuitive indication, simple circuit and low cost.
Description
Technical field
The utility model relates to a kind of auto meter, relates in particular to a kind of automobile-used digital meter device.
Background technology
The tradition auto meter adopts simulated pointer indication dial plate to show engine speed, oil mass, water temperature information, can only be during reading by the general numerical value of the location estimation of pointer on dial plate, and display error is big, and reading is directly perceived inadequately.
And the simulated pointer gauge outfit that traditional auto meter adopts, each simulated pointer gauge outfit all need a pointer, a cover stepper motor and a corresponding step motor driving circuit, and the circuit elements device is many, circuit structure complexity, cost height.
Therefore, be necessary to design a kind of system to overcome above-mentioned defective in fact.
The utility model content
At the defective of prior art, the purpose of this utility model provides a kind of auto meter device that can accurately indicate reading.
Digital car meter system of the present utility model comprises control unit, signal gathering unit, bus receiving element, liquid crystal display driver element, LCDs, wherein: signal gathering unit is connected with outside each module or switch by rigid line, is used for and will sends to control unit after the outward sign conversion; The total wire joint of bus receiving element and car load will send to control unit after the bus message conversion; Control unit is connected with the bus receiving element with signal gathering unit, be used for to the outward sign that receives and bus message is handled and will handle after send to the liquid crystal display driver element; The liquid crystal display driver element is connected with LCDs, is used to drive liquid crystal display circuit; LCDs is used to show the data after the processing.
Preferably, described device also comprise the speed indicator table and with described speed indicator table bonded assembly stepper motor, described control unit is connected with stepper motor, with the rotating speed of control rate pointer gauge.
Preferably, described device comprises backlight illuminating unit, and described backlight illuminating unit is connected with control unit and LCDs, is used to LCDs that back lighting is provided.
Preferably, described device also comprises power management module, and described power management module is used to monitor the instrument power supply state of car load.
Preferably, described device also comprises alarm lamp, and described alarm lamp is connected with control unit.
Preferably, described alarm lamp is a LED light.
Compared with prior art, digital car meter system display precision height of the present utility model, reading is directly perceived, circuit is simple and with low cost.
Description of drawings
Fig. 1 is the theory structure scheme drawing of the digital car meter system of a kind of embodiment of the present utility model;
Fig. 2 is the electrical block diagram of digital car meter system shown in Figure 1.
The specific embodiment
As shown in Figure 1, automobile-used digital meter device of the present utility model comprises control unit 101, signal gathering unit 102, bus receiving element 103, liquid crystal display driver element 104 and LCDs 105.
Liquid crystal display driver element 104 is connected with LCDs, is used to drive liquid crystal display circuit.Liquid crystal display driver element 104 can adopt various suitable lcd drive chips, LCD driving circuit 104 as shown in Figure 2.
LCDs 105 is used to show the data after the processing.On LCDs 105, can demonstrate a plurality of vehicle operatings, operating parameter by corresponding software, for example, engine speed signal, fuel liquid level information, engine coolant information, gear information, hand/arrange parameters such as mode, driving model information, subtotal mileage and total mileage certainly all can show by short in size formula DSTNLCD with digital form.
Automobile-used digital meter device of the present utility model can also comprise described device also comprise speed indicator table 107 and with described speed indicator table bonded assembly stepper motor 106, described control unit is connected with stepper motor 106, with the rotating speed of control rate pointer gauge 107.Master chip 101 can be presented at speed signal on the pointer gauge outfit by the mode of step motor driving circuit with the simulated pointer swing.
Automobile-used digital meter device of the present utility model can also comprise backlight illuminating unit 108, described backlight illuminating unit 108 is connected with control unit 101 and LCDs 105, be used to LCDs 105 that back lighting is provided, as the back lighting circuit 108 among Fig. 2.Independently back lighting circuit 108 is responsible for the night light of instrument, receive on-off signal after, the back lighting of some brightness liquid crystal display screen.
Automobile-used digital meter device of the present utility model can also comprise power management module 109, and described power management module 109 is used to monitor the instrument power supply state of car load.Power management module 109 is controlled at the electric power thus supplied of automobile-used digital meter under the car load different electrical power pattern.
Automobile-used digital meter device of the present utility model can also comprise the alarm lamp (not shown), and described alarm lamp is connected with control unit.Preferably, described alarm lamp is a LED light.After control unit 101 sent alerting signal, the LED light that is installed on the auto meter device was opened, for navigating mate provides alerting signal.
For above-mentioned constituent elements, the driving circuit of liquid crystal display gauge outfit, simulated pointer gauge outfit and warning indicator lamp is integrated on the circuit board assembly of meter system, and the control signal that control unit sends is by rigid line or bus mode and each module communication of vehicle body.
Although the utility model is described by above-mentioned preferred implementation, its way of realization is not limited to above-mentioned embodiment.Should be realized that under the situation that does not break away from the utility model purport, those skilled in the art can make different variations and modification to the utility model.
Claims (6)
1. automobile-used digital meter device is characterized in that described device comprises: control unit, signal gathering unit, bus receiving element, liquid crystal display driver element, LCDs, wherein:
Signal gathering unit is connected with outside each module or switch by rigid line, is used for sending to control unit after the outward sign conversion;
The total wire joint of bus receiving element and car load will send to control unit after the bus message conversion;
Control unit is connected with the bus receiving element with signal gathering unit, be used for to the outward sign that receives and bus message is handled and will handle after send to the liquid crystal display driver element;
The liquid crystal display driver element is connected with LCDs, is used to drive liquid crystal display circuit;
LCDs is used to show the data after the processing.
2. automobile-used digital meter device according to claim 1 is characterized in that, described device also comprise the speed indicator table and with described speed indicator table bonded assembly stepper motor, described control unit is connected with stepper motor, with the rotating speed of control rate pointer gauge.
3. automobile-used digital meter device according to claim 1 and 2 is characterized in that described device comprises backlight illuminating unit, and described backlight illuminating unit is connected with control unit and LCDs, is used to LCDs that back lighting is provided.
4. automobile-used digital meter device according to claim 3 is characterized in that described device also comprises power management module, and described power management module is used to monitor the instrument power supply state of car load.
5. automobile-used digital meter device according to claim 4 is characterized in that described device also comprises alarm lamp, and described alarm lamp is connected with control unit.
6. automobile-used digital meter device according to claim 5 is characterized in that described alarm lamp is a LED light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200753778U CN201439308U (en) | 2009-07-24 | 2009-07-24 | Digital instrumentation for vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200753778U CN201439308U (en) | 2009-07-24 | 2009-07-24 | Digital instrumentation for vehicles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201439308U true CN201439308U (en) | 2010-04-21 |
Family
ID=42543976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200753778U Expired - Fee Related CN201439308U (en) | 2009-07-24 | 2009-07-24 | Digital instrumentation for vehicles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201439308U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104527429A (en) * | 2014-11-19 | 2015-04-22 | 上海德科电子仪表有限公司 | Full-liquid crystal virtual instrument of car |
-
2009
- 2009-07-24 CN CN2009200753778U patent/CN201439308U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104527429A (en) * | 2014-11-19 | 2015-04-22 | 上海德科电子仪表有限公司 | Full-liquid crystal virtual instrument of car |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100421 Termination date: 20170724 |