CN211390959U - Combined instrument - Google Patents
Combined instrument Download PDFInfo
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- CN211390959U CN211390959U CN201922025896.XU CN201922025896U CN211390959U CN 211390959 U CN211390959 U CN 211390959U CN 201922025896 U CN201922025896 U CN 201922025896U CN 211390959 U CN211390959 U CN 211390959U
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Abstract
The utility model relates to an instrument and meter technical field, in particular to combination instrument, including shell, circuit board, support, TFT screen and section yard screen. The bracket is fixedly connected with the shell; the circuit board is fixed between the shell and the bracket; the TFT screen is fixed on the support. The segment code screen is arranged on the outer side of the TFT screen, and the TFT screen is arranged opposite to the light valve area of the segment code screen; the segment code screen is fixedly connected with the bracket. The circuit board is integrated with a microcontroller, a first control circuit and a second control circuit; the microcontroller is electrically connected with the first control circuit and the second control circuit; the first control circuit is connected with the LED module of the TFT screen; the second control circuit is connected with the LED module of the segment code screen. The utility model provides a combination meter makes luminance, the colour of TFT screen and section code screen tend to unanimity, has realized the whole uniformity of TFT screen and section code screen, has strengthened display effect.
Description
Technical Field
The utility model relates to an instrument and meter technical field, in particular to combination meter.
Background
In recent years, with the rapid popularization of concepts of motorization, intellectualization and light weight of automobiles, automobile electronic technology has been dramatically developed. The diversification and individuation requirements of users on the automobile instrument are higher and higher, the instrument is required to have a high-definition picture and a man-machine interaction interface of dynamic science and technology, and the cost of the product is required to have certain advantages. The automobile instrument formed by combining the segment code screen and the color liquid crystal screen is novel in display effect, high in picture definition, smooth in animation, friendly in interface, rich in information, scientific and dynamic in information, obvious in product cost and even only one third of the price of a full liquid crystal instrument with the same specification. However, the segment code screen and liquid crystal screen combination meter in the market at present has the following defects: the existing combination instrument is poor in integrity, the colors and the brightness of two areas of a segment code screen and a liquid crystal screen of the existing combination instrument are not consistent enough, and the splicing traces of the two screens are heavy. Secondly, under the working condition of the existing combination meter at night, ghost images are easily generated on the surface of the segment code screen, namely, displayed contents and the ghost images thereof are overlapped in the range of the meter, so that a user is influenced to accurately and quickly read driving information.
SUMMERY OF THE UTILITY MODEL
The utility model discloses current combination meter to existence among the prior art is unanimous inadequately on the colour of two blocks of regions of section code screen and LCD screen, luminance to and section code screen surface produces the technical problem of ghost image, provides a combination meter.
The utility model provides an above-mentioned technical problem's technical scheme as follows:
a combination meter, comprising: the display screen comprises a shell, a circuit board, a bracket, a TFT screen and a segment code screen; the bracket is fixedly connected with the shell; the circuit board is fixed between the shell and the bracket; the TFT screen is fixed on the bracket; the segment code screen is arranged on the outer side of the TFT screen, and the TFT screen is arranged opposite to the light valve area of the segment code screen; the segment stacking screen is fixedly connected with the bracket; a microcontroller, a first control circuit and a second control circuit are integrated on the circuit board; the microcontroller is electrically connected with the first control circuit and the second control circuit; the first control circuit is connected with the LED module of the TFT screen; the second control circuit is connected with the LED module of the segment code screen.
In a preferred embodiment, the first control circuit includes: the first filter circuit, the first electronic switch, the first current limiting circuit, the second filter circuit and the first light power supply are integrated on the circuit board; the microcontroller is connected with one end of the first electronic switch through the second filter circuit, the first electronic switch is connected with one end of the LED module of the TFT screen, the other end of the LED module of the TFT screen is connected with one end of the second filter circuit through the first current-limiting circuit, and the other end of the second filter circuit is connected with the first lamplight power supply.
In a preferred embodiment, the second control circuit includes: the third filter circuit, the second electronic switch, the second current limiting circuit, the fourth filter circuit and the second lamplight power supply are integrated on the circuit board; the microcontroller is connected with one end of the second electronic switch through the third filter circuit, the second electronic switch is connected with one end of the LED module of the segment code screen, the other end of the LED module of the segment code screen is connected with one end of the fourth filter circuit through the second current limiting circuit, and the other end of the fourth filter circuit is connected with the second lamplight power supply.
In the preferred scheme, the method further comprises the following steps: a lining plate and glass; the lining plate is fixed on the outer side of the bracket; the inner side of the lining plate is abutted to the segment screen, and the glass is fixed to the outer side of the lining plate.
In the preferred scheme, the lining plate is fixedly connected with the bracket through a screw; the glass buckle is fixed on the outer side of the lining plate.
In the preferred scheme, a frosting layer is arranged on the polarizing plate of the segment code screen.
In a preferred embodiment, the light valve area of the segment code screen is disposed in the middle of the segment code screen.
In the preferred scheme, the segment code screen is a 12.3 inch display screen; the TFT screen is a 7-inch display screen.
In the preferred scheme, the circuit board is fixedly connected with the shell through a screw; the bracket is fixedly connected with the shell through a screw; the TFT screen and the segment code screen are fixedly connected with the support through the buckle pieces respectively.
The utility model provides a combination meter possesses following beneficial effect or advantage at least:
the utility model provides a combined instrument, a microcontroller, a first control circuit and a second control circuit are integrated on a circuit board; the microcontroller is electrically connected with the first control circuit and the second control circuit; the first control circuit is connected with the LED module of the TFT screen; the second control circuit is connected with the LED module of the segment code screen. The microcontroller adjusts the current value of the first control circuit to further adjust the brightness of the LED module of the TFT screen, and the microcontroller adjusts the current value of the second control circuit to further adjust the brightness of the LED module of the segment code screen, so that the brightness of the LED module and the brightness of the segment code screen tend to be consistent. The utility model provides a combination meter, through microcontroller and the make-and-break time of the LED module of first control circuit control TFT screen, realize the regulation to the LED module luminance of TFT screen; the on-off time of the LED module of the segment code screen is controlled through the microcontroller and the second control circuit, so that the brightness of the LED module of the segment code screen is adjusted; the brightness of the two tends to be consistent. The utility model provides a combination meter can also be through the warm colour or the cold colour of the backlight of the LED module of adjusting section sign indicating number screen, the light guide body shape and the thickness of light guide medium, the printing ink tone and the thickness of color film, the luminousness and the roughness of polaroid; adjusting the warm color or the cold color of a TFT screen backlight source, the RGB value of a UI picture and the color resolution of the liquid crystal screen, so that the colors of the TFT screen and the segment code screen tend to be consistent; the integral consistency of the TFT screen and the segment code screen is realized, and the display effect is enhanced.
Drawings
Fig. 1 is an exploded view of a combination meter according to an embodiment of the present invention;
fig. 2 is a schematic block diagram of a first control circuit provided in an embodiment of the present invention;
fig. 3 is a schematic block diagram of a second control circuit according to an embodiment of the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
the display screen comprises a shell 1, a circuit board 2, a support 3, a TFT screen 4, a segment code screen 5, a lining plate 6 and glass 7.
Detailed Description
The utility model discloses current combination meter to existence among the prior art is unanimous inadequately on the colour of two blocks of regions of section code screen and LCD screen, luminance to and section code screen surface produces the technical problem of ghost image, provides a combination meter.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
The embodiment of the utility model provides a combination meter, refer to fig. 1-3, it mainly includes: the display screen comprises a shell 1, a circuit board 2, a support 3, a TFT screen 4, a segment code screen 5, a lining plate 6 and glass 7. Wherein, the segment code screen 5 is a 12.3 inch display screen; the TFT screen 4 is a 7-inch display screen. The bracket 3 is fixedly connected with the shell 1 through bolts; the circuit board 2 is arranged between the shell 1 and the bracket 3, and the circuit board 2 is fixedly connected with the inner side of the shell 1 through screws. TFT screen 4 buckle is fixed on support 3, the assembly and the dismantlement of TFT screen 4 of being convenient for. The segment code screen 5 is arranged on the outer side of the TFT screen 4, and the TFT screen 4 is arranged opposite to the light valve area of the segment code screen 5; in this embodiment, the light valve area of the segment code screen 5 is arranged in the middle of the segment code screen 5. The segment screen 5 is fixedly connected with the bracket 3 through a fastener. A frosting layer is arranged on the polarizer of the segment screen 5; the frosted factor of the car scale level is added on the polaroid in the segment code screen 5 to form a frosted layer, the roughness is increased, and the mirror reflectivity of the segment code screen 5 is reduced, so that the mirror ghost image is eliminated, and the information display definition is ensured. A microcontroller, a first control circuit and a second control circuit are integrated on the circuit board 2; the microcontroller is electrically connected with the first control circuit and the second control circuit; the first control circuit is connected with the LED module of the TFT screen 4; the second control circuit is connected with the LED module of the segment code screen 5. The lining plate 6 is fixed on the outer side of the bracket 3 through screws; the inner side of the lining plate 6 is abutted against the segment screen 5, and the glass 7 is fixed on the outer side of the lining plate 6 in a buckling mode.
The first control circuit and the second control circuit are further described below:
referring to fig. 2, the first control circuit includes: the first filter circuit, the first electronic switch, the first current limiting circuit, the second filter circuit and the first light power supply are integrated on the circuit board 2. The microcontroller is connected with one end of the first electronic switch through the second filter circuit, the first electronic switch is connected with one end of the LED module of the TFT screen 4, the other end of the LED module of the TFT screen 4 is connected with one end of the second filter circuit through the first current-limiting circuit, and the other end of the second filter circuit is connected with the first lamplight power supply.
Referring to fig. 3, the second control circuit includes: and the third filter circuit, the second electronic switch, the second current limiting circuit, the fourth filter circuit and the second lamplight power supply are integrated on the circuit board 2. The microcontroller is connected with one end of the second electronic switch through the third filter circuit, the second electronic switch is connected with one end of the LED module of the segment code screen 5, the other end of the LED module of the segment code screen 5 is connected with one end of the fourth filter circuit through the second current-limiting circuit, and the other end of the fourth filter circuit is connected with the second lamplight power supply.
The microcontroller, the filter circuit, the electronic switch, the current limiting circuit and the light power supply are common electronic components in the field, and the specific structure of the electronic components is not explained herein.
The control process of the TFT screen 4 is the same as that of the segment code screen 5, namely, the microcontroller outputs a pulse width modulation signal, the pulse width modulation signal is processed by the filter circuit and then is connected with the electronic switch tube, the electronic switch tube is connected with the cathode of the LED module needing brightness adjustment, the anode of the LED module is connected with the light power supply module through the current limiting circuit, and the light power supply module outputs stable voltage through multi-stage filtering.
The utility model provides a combination meter realizes mainly based on two aspects of hardware and software to the regulation of LED module (including the LED module of TFT screen 4 and the LED module of segment code screen 5) luminance: in terms of hardware, a light power supply firstly passes through a filter circuit and then is connected with an LED module needing brightness adjustment through a current limiting circuit, and current finally flows to an instrument ground through an electronic switch, so that the LED module is lightened. The current value of the circuit loop is adjusted by adjusting the threshold value of the current limiting circuit, so that the brightness of the LED module is wholly adjusted up or down. On the aspect of software, under the condition that the threshold value of the current limiting circuit is fixed, when the electronic switch is conducted, the LED module is lightened; when the electronic switch is turned off, the LED module is not lighted. The conduction frequency of the electronic switch can be controlled by a square wave with a certain frequency, and the conduction time of the waveform is related to the duty ratio of the pulse width modulation signal output by the microcontroller. I.e. the LED module brightness is adjusted by the duty cycle. As an optimal scheme, the brightness level of the LED module can be mapped through a test program message, and rapid debugging is facilitated.
The utility model provides a combination meter is to the accommodation process of colour: one color, for example, red, displayed in the TFT color liquid crystal panel is selected, and red displayed on the segment code panel 5 is selected. And respectively picking up red samples, and reading indexes such as color temperature, wavelength, brightness and the like through an optical instrument. According to the display principle and color influence factors of the combination instrument, the warm color and the cold color of the backlight source of the segment code screen 5, the shape and the thickness of a light guide body of a light guide medium, the color tone and the thickness of ink of a color film and the light transmittance and the roughness of a polaroid are adjusted; and the adjustment and the warm color and the cold color of the backlight source of the TFT screen 4, the RGB value of the UI picture and the strong color resolution of the liquid crystal screen are realized. After the parameters are measured and the test data are recorded continuously, the color is synchronously adjusted by the method until the color of the two is basically consistent.
The utility model provides a combination meter possesses following beneficial effect or advantage at least:
the utility model provides a combined instrument, a microcontroller, a first control circuit and a second control circuit are integrated on a circuit board; the microcontroller is electrically connected with the first control circuit and the second control circuit; the first control circuit is connected with the LED module of the TFT screen; the second control circuit is connected with the LED module of the segment code screen. The microcontroller adjusts the current value of the first control circuit to further adjust the brightness of the LED module of the TFT screen, and the microcontroller adjusts the current value of the second control circuit to further adjust the brightness of the LED module of the segment code screen, so that the brightness of the LED module and the brightness of the segment code screen tend to be consistent. The utility model provides a combination meter, through microcontroller and the make-and-break time of the LED module of first control circuit control TFT screen, realize the regulation to the LED module luminance of TFT screen; the on-off time of the LED module of the segment code screen is controlled through the microcontroller and the second control circuit, so that the brightness of the LED module of the segment code screen is adjusted; the brightness of the two tends to be consistent. The utility model provides a combination meter can also be through the warm colour or the cold colour of the backlight of the LED module of adjusting section sign indicating number screen, the light guide body shape and the thickness of light guide medium, the printing ink tone and the thickness of color film, the luminousness and the roughness of polaroid; adjusting the warm color or the cold color of a TFT screen backlight source, the RGB value of a UI picture and the color resolution of the liquid crystal screen, so that the colors of the TFT screen and the segment code screen tend to be consistent; the integral consistency of the TFT screen and the segment code screen is realized, and the display effect is enhanced.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (9)
1. A combination meter, comprising: the display screen comprises a shell (1), a circuit board (2), a bracket (3), a TFT screen (4) and a segment code screen (5); the bracket (3) is fixedly connected with the shell (1); the circuit board (2) is fixed between the shell (1) and the bracket (3); the TFT screen (4) is fixed on the bracket (3); the segment code screen (5) is arranged on the outer side of the TFT screen (4), and the TFT screen (4) is arranged opposite to the light valve area of the segment code screen (5); the segment code screen (5) is fixedly connected with the bracket (3); a microcontroller, a first control circuit and a second control circuit are integrated on the circuit board (2); the microcontroller is electrically connected with the first control circuit and the second control circuit; the first control circuit is connected with the LED module of the TFT screen (4); the second control circuit is connected with the LED module of the segment code screen (5).
2. The combination meter of claim 1, wherein the first control circuit comprises: the first filter circuit, the first electronic switch, the first current limiting circuit, the second filter circuit and the first lighting power supply are integrated on the circuit board (2); the microcontroller is connected with one end of the first electronic switch through the second filter circuit, the first electronic switch is connected with one end of the LED module of the TFT screen (4), the other end of the LED module of the TFT screen (4) is connected with one end of the second filter circuit through the first current limiting circuit, and the other end of the second filter circuit is connected with the first lamplight power supply.
3. The combination meter of claim 1, wherein the second control circuit comprises: the third filter circuit, the second electronic switch, the second current limiting circuit, the fourth filter circuit and the second light power supply are integrated on the circuit board (2); the microcontroller is connected with one end of the second electronic switch through the third filter circuit, the second electronic switch is connected with one end of the LED module of the segment code screen (5), the other end of the LED module of the segment code screen (5) is connected with one end of the fourth filter circuit through the second current limiting circuit, and the other end of the fourth filter circuit is connected with the second lamplight power supply.
4. A combination according to any one of claims 1 to 3, further comprising: a lining plate (6) and glass (7); the lining plate (6) is fixed on the outer side of the bracket (3); the inner side of the lining plate (6) is abutted to the segment code screen (5), and the glass (7) is fixed on the outer side of the lining plate (6).
5. Combination according to claim 4, wherein the backing plate (6) is fixedly connected to the support (3) by means of screws; the glass (7) is fixed on the outer side of the lining plate (6) in a buckling mode.
6. Combination according to claim 1, wherein the segment code screen (5) is provided with a frosted layer on the polarizer.
7. Combination according to claim 1, wherein the light valve area of the segment screen (5) is arranged in the middle of the segment screen (5).
8. Combination according to claim 1, wherein the segment code screen (5) is a 12.3 "display screen; the TFT screen (4) is a 7-inch display screen.
9. Combination according to claim 1, wherein the circuit board (2) is fixedly connected to the housing (1) by means of screws; the bracket (3) is fixedly connected with the shell (1) through a screw; the TFT screen (4) and the segment code screen (5) are fixedly connected with the support (3) through fasteners respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922025896.XU CN211390959U (en) | 2019-11-21 | 2019-11-21 | Combined instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922025896.XU CN211390959U (en) | 2019-11-21 | 2019-11-21 | Combined instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211390959U true CN211390959U (en) | 2020-09-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922025896.XU Active CN211390959U (en) | 2019-11-21 | 2019-11-21 | Combined instrument |
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| CN (1) | CN211390959U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113858948A (en) * | 2021-08-17 | 2021-12-31 | 黑龙江天有为电子有限责任公司 | Bore hole 3D motormeter dish and car |
-
2019
- 2019-11-21 CN CN201922025896.XU patent/CN211390959U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113858948A (en) * | 2021-08-17 | 2021-12-31 | 黑龙江天有为电子有限责任公司 | Bore hole 3D motormeter dish and car |
| CN113858948B (en) * | 2021-08-17 | 2023-02-03 | 黑龙江天有为电子有限责任公司 | Bore hole 3D motormeter dish and car |
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