CN102122484A - Synchronous regulating circuit for vehicle-mounted display screen backlight and button backlight - Google Patents
Synchronous regulating circuit for vehicle-mounted display screen backlight and button backlight Download PDFInfo
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- CN102122484A CN102122484A CN2010106075997A CN201010607599A CN102122484A CN 102122484 A CN102122484 A CN 102122484A CN 2010106075997 A CN2010106075997 A CN 2010106075997A CN 201010607599 A CN201010607599 A CN 201010607599A CN 102122484 A CN102122484 A CN 102122484A
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Abstract
The invention discloses a synchronous regulating circuit for vehicle-mounted display screen backlight and button backlight, which comprises a display screen backlight source circuit module, a button backlight source circuit module, a drive circuit module, a Micro Controller Unit (MCU) processing control circuit module and a photoelectric sensor. The display screen backlight source circuit module and the button backlight source circuit module are electrically connected with the drive circuit module; the button backlight source circuit module is electrically connected with a voltage-stabilizing diode and a voltage-stabilizing triode electrically connected with each other; the emitter electrode of the triode is grounded; and the MCU processing control circuit module is electrically connected with the drive circuit, the base electrode of the triode and the photoelectric sensor. In the invention, the synchronous automatic regulation for the vehicle-mounted display screen backlight and the button backlight can be realized; the brightness curves of the display screen backlight and the button backlight are similar to each other, and the button backlight has adjustable colors, so that the traveling safety is improved.
Description
Technical field
The present invention relates to a kind of synchronous regulating circuit backlight, especially relate to the backlight and button synchronous regulating circuit backlight of a kind of vehicle-carrying display screen.
Background technology
Along with economy and development of science and technology, automobile is more and more, and particularly car is popularized in most of urban families.Usually be provided with LCDs and button on the console in automotive interior the place ahead, described LCDs and button are provided with backlight, see the various information of observing automobile by described LCDs, can carry out corresponding setting or adjusting by described button.Automobile often by day or when occurring night, the luminance difference in the automobile in the environment is bigger, described backlight all the time with, single brightness shows can't satisfy request for utilization, for example, daytime is bright and clear, and display screen needs enough brightness assurance displaying contents and can see clearly; When the tunnel was gone in night or car steering, very dark in the automobile, the brightness of described LCDs and described button needed enough low, and is not dazzling to guarantee demonstration.In the prior art, all by manually regulating the brightness of described backlight, to satisfy the demand.Yet manual adjustments is very inconvenient, causes driving dangerous simultaneously.
Summary of the invention
The defective that The present invention be directed to the existence of above-mentioned background technology provides a kind of vehicle-carrying display screen backlight and button synchronous regulating circuit backlight, this circuit can be realized the backlight and button adjusting automatically synchronously backlight of vehicle-carrying display screen, display backlight is close with button backlight illumination curve, the button backlight color is adjustable, improves travel safety.
For achieving the above object, the invention discloses the backlight and button synchronous regulating circuit backlight of a kind of vehicle-carrying display screen, it comprises display backlight source circuit module, button backlight circuit module, drive circuit module, MCU control and treatment circuit module and photoelectric sensor, described display backlight source circuit module and button backlight circuit module all are electrically connected with described drive circuit module, described button backlight circuit is electrically connected with the voltage stabilizing diode and the triode of mutual electrical connection, the grounded emitter of described triode, described MCU control and treatment circuit module and described driving circuit, the base stage of triode and photoelectric sensor are electrically connected.
Further, be electrically connected with an end of capacitor C 1 between described photoelectric sensor and the described MCU control and treatment circuit module, the other end ground connection of described capacitor C 1.
Further, be electrically connected with an end of resistance R 1 between described photoelectric sensor and the described MCU control and treatment circuit module, the other end ground connection of described resistance R 1.
Further, described button backlight circuit is provided with some button backlight units, each button backlight unit is provided with orange LED, red LED, green LED and blue led, described orange LED all is electrically connected with voltage stabilizing diode ZD1, and described voltage stabilizing diode ZD1 is electrically connected with triode Q1; Described red LED all is electrically connected with voltage stabilizing diode ZD2, and described voltage stabilizing diode ZD2 is electrically connected with triode Q2; Described green LED all is electrically connected with voltage stabilizing diode ZD3, and described voltage stabilizing diode ZD3 is electrically connected with triode Q3; Described blue led all is electrically connected with a voltage stabilizing diode ZD4, and described voltage stabilizing diode ZD4 is electrically connected with triode Q4.
In sum, vehicle-carrying display screen of the present invention backlight with button synchronous regulating circuit backlight cooperating by described photoelectric sensor and described each circuit module, thereby can realize the backlight and button adjusting automatically synchronously backlight of vehicle-carrying display screen, display backlight is close with button backlight illumination curve, the button backlight color is adjustable, improves travel safety.
Description of drawings
Fig. 1 is the circuit diagram of an embodiment of the present invention.
Embodiment
For further understanding feature of the present invention, technological means and the specific purposes that reached, function, the present invention is described in further detail below in conjunction with accompanying drawing and embodiment.
See also Fig. 1, vehicle-carrying display screen of the present invention is backlight to comprise display backlight source circuit module 1, button backlight circuit module 2, drive circuit module 3, MCU control and treatment circuit module 4 and photoelectric sensor S1 with button synchronous regulating circuit backlight, described display backlight source circuit module 1 and button backlight circuit module 2 all are electrically connected with described drive circuit module 3, and described display backlight source circuit module 1 is provided with some LED lamps.
Described button backlight circuit module 2 is provided with some button backlight unit KEY, and each button backlight unit KEY is provided with orange LED, red LED, green LED and blue led.Described orange LED all is electrically connected with voltage stabilizing diode ZD1, and described voltage stabilizing diode ZD1 is electrically connected the grounded emitter of described triode Q1 with the collector of triode Q1.Described red LED all is electrically connected with voltage stabilizing diode ZD2, and described voltage stabilizing diode ZD2 is electrically connected the grounded emitter of described triode Q2 with the collector of triode Q2.
Described green LED all is electrically connected with voltage stabilizing diode ZD3, and described voltage stabilizing diode ZD3 is electrically connected the grounded emitter of described triode Q3 with the collector of triode Q3.Described blue led all is electrically connected with a voltage stabilizing diode ZD4, and described voltage stabilizing diode ZD4 is electrically connected described grounded emitter with triode Q4 collector.Described MCU control and treatment circuit module 4 is electrically connected with the base stage and the photoelectric sensor S1 of described drive circuit module 3, triode (Q1, Q2, Q3, Q4), wherein, described MCU control and treatment circuit module 4 is electrically connected with the base stage of described triode Q1, triode Q2, triode Q3 and triode Q4 respectively.Be electrically connected with an end of capacitor C 1 and resistance R 1 between described photoelectric sensor S1 and the described MCU control and treatment circuit module 4, the other end ground connection of described capacitor C 1 and resistance R 1.
Principle of work of the present invention is as follows: described photoelectric sensor S1 gathers light, and will pass to described MCU control and treatment circuit module 4 after described capacitor C 1 filtering of corresponding light signal process, 4 pairs of described light signals of described MCU control and treatment circuit module carry out A/D and convert digital signal to, and according to described digital signal described drive circuit module 3 is carried out PWM and control, thereby described drive circuit module 3 produces different backlight driving voltage, backlight illumination is regulated with ambient brightness, environment is dark more backlight dark more, and environment is bright more backlight bright more.By described voltage stabilizing diode (ZD1, ZD2, ZD3, ZD4) is set, thereby can realize that display backlight is close with button backlight illumination curve.By described triode (Q1, Q2, Q3, Q4) is set,, realize that the button backlight color is adjustable by the control of described MCU control and treatment circuit module 4.
In sum, vehicle-carrying display screen of the present invention backlight with button synchronous regulating circuit backlight cooperating by described photoelectric sensor S1 and described each circuit module, thereby can realize the backlight and button adjusting automatically synchronously backlight of vehicle-carrying display screen, display backlight is close with button backlight illumination curve, the button backlight color is adjustable, improves travel safety.
The above embodiment has only expressed one embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be interpreted as limitation of the scope of the invention.Should be pointed out that for the person of ordinary skill of the art without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with claims.
Claims (4)
- A vehicle-carrying display screen backlight with button synchronous regulating circuit backlight, it comprises display backlight source circuit module (1) and button backlight circuit module (2), it is characterized in that: also comprise drive circuit module (3), MCU control and treatment circuit module (4) and photoelectric sensor S1, described display backlight source circuit module (1) and button backlight circuit module (2) all are electrically connected with described drive circuit module (3), described button backlight circuit module (2) is electrically connected with the voltage stabilizing diode (ZD1 of mutual electrical connection, ZD2, ZD3, ZD4) and triode (Q1, Q2, Q3, Q4), described triode (Q1, Q2, Q3, Q4) grounded emitter, described MCU control and treatment circuit module (4) and described drive circuit module, triode (Q1, Q2, Q3, Q4) base stage and photoelectric sensor S1 are electrically connected.
- 2. the backlight and button synchronous regulating circuit backlight of vehicle-carrying display screen according to claim 1, it is characterized in that: be electrically connected with an end of capacitor C 1 between described photoelectric sensor S1 and the described MCU control and treatment circuit module (4), the other end ground connection of described capacitor C 1.
- 3. the backlight and button synchronous regulating circuit backlight of vehicle-carrying display screen according to claim 1 and 2, it is characterized in that: be electrically connected with an end of resistance R 1 between described photoelectric sensor S1 and the described MCU control and treatment circuit module (4), the other end ground connection of described resistance R 1.
- 4. the backlight and button synchronous regulating circuit backlight of vehicle-carrying display screen according to claim 1 and 2, it is characterized in that: described button backlight circuit module (2) is provided with some button backlight unit KEY, each button backlight unit KEY is provided with orange LED, red LED, green LED and blue led, described orange LED all is electrically connected with voltage stabilizing diode ZD1, and described voltage stabilizing diode ZD1 is electrically connected with triode Q1; Described red LED all is electrically connected with voltage stabilizing diode ZD2, and described voltage stabilizing diode ZD2 is electrically connected with triode Q2; Described green LED all is electrically connected with voltage stabilizing diode ZD3, and described voltage stabilizing diode ZD3 is electrically connected with triode Q3; Described blue led all is electrically connected with a voltage stabilizing diode ZD4, and described voltage stabilizing diode ZD4 is electrically connected with triode Q4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106075997A CN102122484A (en) | 2010-12-28 | 2010-12-28 | Synchronous regulating circuit for vehicle-mounted display screen backlight and button backlight |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010106075997A CN102122484A (en) | 2010-12-28 | 2010-12-28 | Synchronous regulating circuit for vehicle-mounted display screen backlight and button backlight |
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| Publication Number | Publication Date |
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| CN102122484A true CN102122484A (en) | 2011-07-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010106075997A Pending CN102122484A (en) | 2010-12-28 | 2010-12-28 | Synchronous regulating circuit for vehicle-mounted display screen backlight and button backlight |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107180614A (en) * | 2017-06-26 | 2017-09-19 | 奇瑞汽车股份有限公司 | Vehicle-carrying display screen automatic recovery system, control method and back of the body optical detection circuit |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101814275A (en) * | 2010-02-26 | 2010-08-25 | 天津七一二通信广播有限公司 | Automatic brightness-regulating system for CIR operation display terminal |
| CN201677753U (en) * | 2009-12-18 | 2010-12-22 | 东风襄樊仪表系统有限公司 | Automotive electronic combination instrument |
| CN201936584U (en) * | 2010-12-28 | 2011-08-17 | 东莞常禾电子有限公司 | Vehicle-mounted display screen backlight and button backlight synchronous adjusting circuit |
-
2010
- 2010-12-28 CN CN2010106075997A patent/CN102122484A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201677753U (en) * | 2009-12-18 | 2010-12-22 | 东风襄樊仪表系统有限公司 | Automotive electronic combination instrument |
| CN101814275A (en) * | 2010-02-26 | 2010-08-25 | 天津七一二通信广播有限公司 | Automatic brightness-regulating system for CIR operation display terminal |
| CN201936584U (en) * | 2010-12-28 | 2011-08-17 | 东莞常禾电子有限公司 | Vehicle-mounted display screen backlight and button backlight synchronous adjusting circuit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107180614A (en) * | 2017-06-26 | 2017-09-19 | 奇瑞汽车股份有限公司 | Vehicle-carrying display screen automatic recovery system, control method and back of the body optical detection circuit |
| CN107180614B (en) * | 2017-06-26 | 2019-10-11 | 奇瑞汽车股份有限公司 | Vehicle-carrying display screen automatic recovery system, control method |
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Application publication date: 20110713 |