CN209257883U - A kind of used with tractor Chinese display TFT instrument - Google Patents
A kind of used with tractor Chinese display TFT instrument Download PDFInfo
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- CN209257883U CN209257883U CN201822201652.8U CN201822201652U CN209257883U CN 209257883 U CN209257883 U CN 209257883U CN 201822201652 U CN201822201652 U CN 201822201652U CN 209257883 U CN209257883 U CN 209257883U
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- tft
- liquid crystal
- crystal display
- tractor
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- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 27
- 238000006243 chemical reaction Methods 0.000 claims abstract description 16
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- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
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- Liquid Crystal Display Device Control (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The utility model provides a kind of used with tractor Chinese display TFT instrument, including CAN bus, CAN converter, single-chip microcontroller, backlight control conversion circuit and TFT liquid crystal display, the CAN bus is connected by the CAN converter with the single-chip microcontroller, the single-chip microcontroller is also connected with backlight control conversion circuit and the TFT liquid crystal display, meanwhile the backlight control conversion circuit control connects the TFT liquid crystal display.The utility model uses TFT liquid crystal display, and since TFT liquid crystal display panel has the characteristics that low pressure applications, low driving voltage, low-power consumption, solidification safety in utilization and reliability improve, TFT instrument shows stabilization, high reliablity in use.
Description
Technical field
The utility model relates to instrument field of display technology, more particularly, to a kind of used with tractor Chinese display TFT instrument.
Background technique
Tractor is suitable for various operating conditions, widely used.It is mainly used for drawing and driving various outfitting tools, completes field
Operation, the operation of hauling operation side and earthwork.
When tractor work, used with tractor combination instrument is for showing engine speed, engine oil pressure, coolant water temperature,
The state of the various tractor key messages such as fuel liquid level and tractor lamps and lanterns, while the failure that tractor occurs is carried out
Alarm.
Currently, domestic used with tractor combination instrument is mainly that moving-coil moving-magnetic type machine core instrument and stepper motor drive instrument,
Common disadvantage is: showing that content is single and does not enrich, can not accurately show to enrich as far as possible in limited indication range
Content, safety reliability is unstable.
As shown in Figure 1, for company and industry, commonly a kind of stepper motor drives instrument.
Instrument is to acquire the number such as engine speed, water temperature, oil mass by the I/O pin of single-chip microcontroller using single-chip microcontroller as core
It is believed that breath, carries out C language programming by carrier of single-chip microcontroller, mechanical indicator 1 is driven with chip drives stepper motor, it is aobvious for rotating
Show relevant information, drive meter lamp 2 with single-chip microcontroller output pin, for showing relevant information, reflection type lcd panel 3 is used
In display simple fault information.
Shown in Fig. 2, instrument electrical system frame is driven for stepper motor, technical disadvantages: because having used miniature stepping electricity
Machine, instrument power consumption is high, and feedback response speed is limited, and safety reliability is unstable, and reflection type liquid crystal screen dimensions are too small cannot be straight
Display fault message is seen, cannot show Chinese.
Utility model content
In view of the defects existing in the prior art, the utility model provides a kind of used with tractor Chinese display TFT instrument, packet
Include CAN bus, CAN converter, single-chip microcontroller, backlight control conversion circuit and TFT liquid crystal display, which is characterized in that the CAN bus
It is connected by the CAN converter with the single-chip microcontroller, the single-chip microcontroller is also connected with backlight control conversion circuit and the TFT liquid
Crystalline substance screen, meanwhile, the backlight control conversion circuit control connects the TFT liquid crystal display.
Further, the TFT liquid crystal display is 5 inch, 65536 color TFT chromatic liquid crystal screen.
Further, the resolution ratio of the TFT chromatic liquid crystal screen is 480*320.
Further, the backlight control conversion circuit includes:
Multiple power supplies output module, LT3599 control module, FPGA may be programmed pulse-width controlled module and LED light group module；
The external external circuit power input of multiple power supplies output module, respectively can with LT3599 control module and FPGA
Programming pulse width control module is connected, and LT3599 control module is connected with LED light group module.
Further, there are two types of encapsulation for the LT3599 control module:
The encapsulation of 28 pins or the encapsulation of 32 pins.
The beneficial effects of the utility model are:
The utility model is to be come out warning message with color image text importing by the advantage of TFT display technology, is shown
It is beautiful to show that effect is more dazzled；The information such as mileage, oil consumption and gear are shown in a manner of digital and symbol；It realizes simultaneously
Speed, revolving speed, water temperature and the instruction of fuel oil pointer and warning message LED indication.The instrument can be by image abundant and failure
Information is shown on TFT display screen, can show Chinese information, and driver can relatively quickly understand vehicle condition, is driven for safety
It sails and provides guarantee, carry out trouble shooting maintenance that can be easy by complete detailed fault message driver.It reduces simultaneously
Instrument power consumption, improves instrument safety reliability, improves display screen response speed.
The utility model has the advantages that
1. instrument is directly communicated with CAN bus, the signal wire of sensor and executive component due to the application of CAN converter
Without being connected to instrument, the load of I/O control unit is alleviated, simplifies and optimizes circuit, improves the peace of data transmission
Full reliability.The application of CAN bus technology can make instrument receive all whole vehicle informations simultaneously, and TFT instrument is no longer influenced by
Conventional instrument I/O Interface limits.
2. since TFT liquid crystal display panel has low pressure applications, low driving voltage, low-power consumption, solidification safety in utilization and can
The features such as improving by property, TFT instrument shows stabilization, high reliablity in use.
3.TFT liquid crystal display panel combination host computer exploitation software effectively realizes Layering manifestation, to greatest extent limited
Display space in for user show the most abundant data information；With the favorable compatibility of Chinese language can by warning message with
Color image text importing comes out, and display effect more dazzles beautiful, suitable Chinese user habit；The information that various sensors are acquired
It is shown in a manner of digital and symbol；It is aobvious that speed, revolving speed, water temperature and fuel data are realized by simulated pointer simultaneously
Show and warning message LED indication.Image abundant can be shown that on TFT display screen, driver can be more by the instrument
Promptly understand vehicle condition, provides guarantee for safe driving.
Detailed description of the invention
Fig. 1 is common stepper motor driving instrument schematic diagram；
Fig. 2 is common stepper motor driving instrument system framework map；
Fig. 3 is the utility model used with tractor Chinese display TFT instrument schematic diagram；
Fig. 4 is the utility model used with tractor Chinese display TFT instrument system framework map.
Specific embodiment
In being described below, for illustration and not for limitation, propose such as project equipment structure, interface, technology it
The detail of class, to understand thoroughly the utility model.However, it will be clear to one skilled in the art that there is no these
The utility model also may be implemented in the other embodiments of detail.In other situations, omit to well-known device,
The detailed description of circuit and method, in case unnecessary details interferes the description of the utility model.
As shown in Figure 3 and Figure 4, the utility model provides a kind of used with tractor Chinese display TFT instrument, including CAN total
Line, CAN converter, single-chip microcontroller, backlight control conversion circuit and TFT liquid crystal display 4, which is characterized in that the CAN bus passes through institute
CAN converter to be stated to connect with the single-chip microcontroller, the single-chip microcontroller is also connected with backlight control conversion circuit and the TFT liquid crystal display 4,
Meanwhile the backlight control conversion circuit control connects the TFT liquid crystal display 4.
Using single-chip microcontroller as core, various sensor informations are received by data channel of CAN bus, at C language programming
Collected information is managed, while Multi-level display interface is write by advanced host computer programming language using TFT display screen as carrier, together
When SCM program is interacted with TFT host computer procedure, believed by the display content and malfunction coefficient at push button exciting difference interface
Breath.So that the output of TFT liquid crystal display panel is adapted to the backlight of various environment by backlight control conversion circuit, is brought to user more superior
Comfortable visual experience.
In some illustrative embodiments, the TFT liquid crystal display is 5 inch, 65536 color TFT chromatic liquid crystal screen.
In some illustrative embodiments, the resolution ratio of the TFT chromatic liquid crystal screen is 480*320.
In some illustrative embodiments, the backlight control conversion circuit includes:
Multiple power supplies output module, LT3599 control module, FPGA may be programmed pulse-width controlled module and LED light group module；
The external external circuit power input of multiple power supplies output module, respectively can with LT3599 control module and FPGA
Programming pulse width control module is connected, and LT3599 control module is connected with LED light group module.
In some illustrative embodiments, there are two types of encapsulation for the LT3599 control module:
The encapsulation of 28 pins or the encapsulation of 32 pins.
The LT3599 control module regulates and controls to change the LED current value size of its output by PWM pulsewidth, to change
The adjusting to LCD brightness and contrast is realized in the brightness of LED.
The utility model has the advantage that:
1, gauge internal has CAN converter, connects CAN line, for receiving CAN bus message, single-chip microcontroller passes through CAN message
Obtain the job information and fault message of all the sensors and executive component.
2, circuit connection simplifies, and data transmission credibility is high.
3, TFT liquid crystal display panel reaction speed is fast, while can accurately control display level, and display color is trueer.
4, TFT liquid crystal display panel display interface can use upper computer software editor, and the pointers such as revolving speed can be shown with analog dial, show
Show that content is layered, reasonably optimizing can be carried out with user preferences, display interface freedom degree is high.
Reader should be understood that in the description of this specification reference term " one embodiment ", " is shown " some embodiments "
The description of example ", " specific example " or " some examples " etc. mean specific features described in conjunction with this embodiment or example, structure,
Material or feature are contained at least one embodiment or example of the utility model.In the present specification, to above-mentioned term
Schematic representation need not be directed to identical embodiment or example.Moreover, description specific features, structure, material or
Feature may be combined in any suitable manner in any one or more of the embodiments or examples.In addition, in not conflicting situation
Under, those skilled in the art can be by different embodiments or examples described in this specification and different embodiments or examples
Feature be combined.
Although the embodiments of the present invention have been shown and described above, it is to be understood that above-described embodiment is
Illustratively, it should not be understood as limiting the present invention, those skilled in the art are in the scope of the utility model
Inside it can make changes, modifications, alterations, and variations to the above described embodiments.
Claims (5)
1. a kind of used with tractor Chinese display TFT instrument, including CAN bus, CAN converter, single-chip microcontroller, backlight control conversion electricity
Road and TFT liquid crystal display, which is characterized in that the CAN bus is connected by the CAN converter with the single-chip microcontroller, described
Single-chip microcontroller is also connected with backlight control conversion circuit and the TFT liquid crystal display, meanwhile, the backlight control conversion circuit control connection
The TFT liquid crystal display.
2. a kind of used with tractor Chinese display TFT instrument according to claim 1, which is characterized in that the TFT liquid crystal display
For 5 inch, 65536 color TFT chromatic liquid crystal screen.
3. a kind of used with tractor Chinese display TFT instrument according to claim 2, which is characterized in that the TFT colour liquid
The resolution ratio of crystal display screen is 480*320.
4. a kind of used with tractor Chinese display TFT instrument according to claim 1, which is characterized in that the backlight control
Conversion circuit includes:
Multiple power supplies output module, LT3599 control module, FPGA may be programmed pulse-width controlled module and LED light group module；
The external external circuit power input of multiple power supplies output module, it is programmable with LT3599 control module and FPGA respectively
Pulse-width controlled module is connected, and LT3599 control module is connected with LED light group module.
5. a kind of used with tractor Chinese display TFT instrument according to claim 4, which is characterized in that the LT3599 control
There are two types of encapsulation for molding block:
The encapsulation of 28 pins or the encapsulation of 32 pins.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822201652.8U CN209257883U (en) | 2018-12-26 | 2018-12-26 | A kind of used with tractor Chinese display TFT instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822201652.8U CN209257883U (en) | 2018-12-26 | 2018-12-26 | A kind of used with tractor Chinese display TFT instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209257883U true CN209257883U (en) | 2019-08-16 |
Family
ID=67561332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822201652.8U Expired - Fee Related CN209257883U (en) | 2018-12-26 | 2018-12-26 | A kind of used with tractor Chinese display TFT instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209257883U (en) |
-
2018
- 2018-12-26 CN CN201822201652.8U patent/CN209257883U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 261206 No. 192 South Beihai Road, Fangzi District, Shandong, Weifang Patentee after: Weichai leiwo Heavy Industry Co.,Ltd. Address before: 261206 No. 192 South Beihai Road, Fangzi District, Shandong, Weifang Patentee before: LOVOL HEAVY INDUSTRY Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190816 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |