CN109640449A - A kind of gear indicator lamp brightness automatic control circuit based on sunlight sensor - Google Patents
A kind of gear indicator lamp brightness automatic control circuit based on sunlight sensor Download PDFInfo
- Publication number
- CN109640449A CN109640449A CN201811608712.6A CN201811608712A CN109640449A CN 109640449 A CN109640449 A CN 109640449A CN 201811608712 A CN201811608712 A CN 201811608712A CN 109640449 A CN109640449 A CN 109640449A
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- Prior art keywords
- gear
- sunlight sensor
- indicator lamp
- led
- controller
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/10—Controlling the intensity of the light
Landscapes
- Circuit Arrangement For Electric Light Sources In General (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
The present invention relates to the gear indicator lamp brightness regulation technology fields of automatic catch automobile, specifically disclose a kind of gear indicator lamp brightness automatic control circuit based on sunlight sensor, controller and LED drive circuit connected to it are indicated equipped with gear, and the LED illuminating circuit and the connection gear of the connection LED drive circuit indicate the working power of controller and the LED illuminating circuit, are additionally provided with the sunlight sensor for connecting gear the instruction controller and the working power.The beneficial effects of the present invention are: using real time environment light intensity in the sunlight sensor collecting vehicle of peripheral hardware, further output voltage corresponding with ambient light intensity indicates lamp controller to gear, the controller is different according to the sunlight signal received, accordingly export driving circuit and illuminating circuit that different pwm signals is given to gear indicator light, it follows the raising of ambient light intensity to realize real-time control gear indicator lamp brightness and increases, reduce and reduce.
Description
Technical field
The present invention relates to the gear indicator lamp brightness regulation technology fields of automatic catch automobile, more particularly to one kind to be based on sunlight
The gear indicator lamp brightness automatic control circuit of sensor.
Background technique
More and more automobiles use automatic catch automobile at present, while each gear has corresponding indicator light (such as Fig. 1 institute
The P R N D S L letter shown has corresponding indicator light) so that Automobile operation is more convenient and drive safety, however therewith
Some problems are brought, current most of gear indicator lights cannot all adjust in real time the power of backlight according to ambient light intensity,
Only can only be according to lamp line Signal Regulation, i.e. a kind of a kind of brightness on daytime, brightness of evening driving lamp often will cause user in this way
Viewing gear indicator light is too dazzling or very secretly the two happens, during especially running at high speed, if gear indicator light
Light and shade brightness has gear signal identification to influence driver, it will brings major accident to influence driving safety.
Summary of the invention
The present invention provides a kind of gear indicator lamp brightness automatic control circuit based on sunlight sensor, and the technology of solution is asked
Topic is that the gear indicator lamp brightness of existing automatic catch automobile cannot follow the variation of sunlight strength and change.
In order to solve the above technical problems, the present invention provides a kind of gear indicator lamp brightness based on sunlight sensor and controls automatically
Circuit processed is equipped with gear instruction controller and LED drive circuit connected to it, and the LED of the connection LED drive circuit
Illuminating circuit and the working power for connecting gear the instruction controller and the LED illuminating circuit, are additionally provided with the connection shelves
The sunlight sensor of position instruction controller and the working power；
The working power is used to indicate controller and the power supply of LED illuminating circuit for the sunlight sensor, gear；
The sunlight sensor is concurrent for acquiring ambient light strength signal in real time under the power supply of the working power
It is sent to the gear instruction controller；
The gear instruction controller exports corresponding pwm signal to institute for the ambient light intensity based on the received
State LED drive circuit；
The LED drive circuit drives the LED illuminating circuit sending corresponding for the pwm signal based on the received
LED gear indicates light.
Preferably, the sunlight sensor by vehicle set the socket connection setting gear in the car indicate controller,
Working power；The vehicle is set socket and is connect equipped with the first optical signal corresponding to the working power and gear instruction controller
Enter end, power supply signal end, the power supply signal end includes power positive end and the first power cathode end.
Preferably, the sunlight sensor is equipped with photodiode and is connected to first electricity at the photodiode both ends
Resistance is additionally provided with one end and connects the positive terminal of the photodiode, the other end for connecting the positive pole that the vehicle sets socket
The second resistance at end, the positive terminal of the photodiode are described for connecting the first power cathode end that the vehicle sets socket
The negative pole end of photodiode is also used to connect the first optical signal incoming end of the gear instruction controller.
Preferably, the LED drive circuit is equipped with 3rd resistor, the 4th resistance, triode；The 3rd resistor is connected to
For the pwm signal output end of the gear instruction controller between the base stage of the triode, the 4th resistance is connected to institute
It states between the base stage of triode and ground；The emitter of the triode is grounded, and collector connects the LED illuminating circuit.
Preferably, the LED illuminating circuit is equipped with the 5th resistance, the 6th resistance, gear indication LED；The gear instruction
The negative pole end of LED connects the collector of the triode；5th resistance and the 6th resistor coupled in parallel are in the gear indication LED
Positive terminal and the working power between.
Preferably, the vehicle sets socket and is additionally provided with vacant end.
Preferably, the vehicle sets socket and is also reserved with the second optical signal incoming end, second source negative pole end.
Preferably, it is 5V that the working power, which is output to the voltage of the sunlight sensor,.
A kind of gear indicator lamp brightness automatic control circuit based on sunlight sensor provided by the invention, using peripheral hardware
Real time environment light intensity in sunlight sensor collecting vehicle, further output voltage corresponding with ambient light intensity refers to gear
Show lamp controller, the controller is different according to the sunlight signal received, accordingly exports different pwm signals and is given to gear instruction
The driving circuit and illuminating circuit of lamp, to realize the raising that real-time control gear indicator lamp brightness follows ambient light intensity
And increase, it reduces and reduces, improve the comfort level that people experiences gear indicator light, improve the drive safety of gear indicator light
Energy.
Detailed description of the invention
Fig. 1 is the schematic diagram of the gear indicator light of existing automatic catch automobile；
Fig. 2 is a kind of gear indicator lamp brightness automatic control circuit based on sunlight sensor provided in an embodiment of the present invention
Function structure chart；
Fig. 3 is to connect sunlight sensor in Fig. 2 provided in an embodiment of the present invention to indicate that the vehicle of controller sets socket with gear
Interface display diagram；
Fig. 4 is the structural schematic diagram provided in an embodiment of the present invention for setting the sunlight sensor of socket for being inserted in Fig. 3 vehicle；
Fig. 5 is the electrical schematic diagram of sunlight sensor shown in Fig. 4 provided in an embodiment of the present invention；
Fig. 6 is that sunlight sensor shown in fig. 5 provided in an embodiment of the present invention its negative pole end output voltage follows its brightness
The performance plot of variation；
Fig. 7 is the electrical schematic diagram of LED drive circuit shown in Fig. 2 and LED illuminating circuit provided in an embodiment of the present invention.
Specific embodiment
Embodiments of the present invention are specifically illustrated with reference to the accompanying drawing, embodiment is only given for illustrative purposes,
It can not be interpreted as limitation of the invention, including attached drawing is only for reference and illustrates use, not constitute and the invention patent is protected
The limitation of range, because on the basis of not departing from spirit and scope of the invention many changes can be carried out to the present invention.
As shown in Figure 1, existing automatic catch automobile is equipped with by the gear indicator light of gear instruction controller control, the gear
Indicate that controller is equipped with the indicator light of corresponding " P R N D S L " these gears as shown in Figure 1, but most of gears refer at present
The power of backlight cannot be adjusted in real time according to ambient light intensity by showing lamp all.
In order to overcome this problem, the gear indicator lamp brightness based on sunlight sensor that the embodiment of the invention provides a kind of
Automatic control circuit, modular structure is as shown in Fig. 2, be equipped with gear instruction controller 01 and LED drive circuit connected to it
02, and the connection LED drive circuit 02 LED illuminating circuit 03 and connect the gear instruction controller 01 and described
The working power (POWER_VCC) of LED illuminating circuit 03 is additionally provided with the connection gear instruction controller 01 and work electricity
The sunlight sensor 04 in source (POWER_VCC)；
The working power (POWER_VCC) is vehicle power supply, for controlling for the sunlight sensor 04, gear instruction
Device 01 and LED illuminating circuit 03 are powered；
The sunlight sensor 04 for acquiring ambient light under the power supply of the working power (POWER_VCC) in real time
Strength signal (the different voltages value for specifically corresponding to different ambient light intensities) is simultaneously sent to the gear instruction controller
01；
The gear instruction controller 01 exports corresponding pwm signal for the ambient light intensity based on the received and arrives
The LED drive circuit 02；
The LED drive circuit 02 drives the sending pair of LED illuminating circuit 03 for the pwm signal based on the received
The LED gear instruction light answered.
As a preferred embodiment, as shown in Figure 3,4, the sunlight sensor 04 is set socket 05 by vehicle and is connected
The gear instruction controller 01, working power (POWER_VCC) in the car is set.The vehicle, which is set socket 05 and is equipped with, to be corresponded to
First optical signal incoming end of the working power (POWER_VCC) and gear instruction controller 01, power supply signal end, institute
Stating power supply signal end includes power positive end and the first power cathode end, be that is to say, when sunlight sensor 04 is inserted in the vehicle
It sets on socket 05, that is, is connected to the first optical signal incoming end, power positive end and the first power cathode end, and the work
The voltage that power supply (POWER_VCC) is output to the sunlight sensor 04 is 5V.
In actual application process, in order to which applicability is higher, the vehicle sets socket 05 and is additionally provided with vacant end.In Fig. 3,
The vehicle sets socket 05 and is also reserved with the second optical signal incoming end, second source negative pole end.
In the present embodiment, the sunlight sensor 04 is not to be directly installed in the internal structure of vehicle, but use
Individual peripheral device structure (can be the sunlight sensor newly configured, be also possible to the sunlight sensor of automotive air-conditioning controller) is inserted
It sets on socket 05 and realizes in vehicle.Specifically, the sunlight sensor 04 is equipped with photodiode D1 and is connected to described photosensitive
The first resistor R1 of diode D1 is additionally provided with one end and connects the positive terminal of the photodiode D1, the other end for connecting
Connect the vehicle set socket 05 power positive end second resistance R2, the photodiode D1 positive terminal it is described for connecting
Vehicle sets the first power cathode end of socket 05, and the negative pole end of the photodiode D1 is also used to connect the gear instruction control
First optical signal incoming end of device 01.Photodiode D1 acquires ambient light strength signal, according to different light intensities
Different corresponding current sizes is exported, is divided by first resistor R1 and second resistance R2, the A point of Fig. 5 exports different voltage
Vout is to the analog sampling port of gear instruction controller 01, and the proportional curve of specific output voltage and radiation degree is such as
Shown in Fig. 6.
As the preferred embodiment of the present invention, as shown in fig. 7, the LED drive circuit 02 is equipped with 3rd resistor R3, the 4th
Resistance R4, triode Q1；The 3rd resistor R3 is connected to the pwm signal output end of the gear instruction controller 01 in described
Between the base stage (B) of triode Q1, the 4th resistance R4 is connected between the base stage (B) of the triode Q1 and ground；It is described
The emitter (E) of triode Q1 is grounded, and collector (C) connects the LED illuminating circuit 03.The LED illuminating circuit 03 is equipped with
5th resistance R5, the 6th resistance R6, gear indication LED (D2)；The negative pole end of the gear indication LED (D2) connects three pole
The collector (C) of pipe Q1；The 5th resistance R5 and the 6th resistance R6 be connected in parallel on the gear indication LED (D2) positive terminal and
Between the working power (POWER_VCC).
In the specific course of work, when light intensity becomes strong, sunlight sensor 04 acquires light intensity, by the output electricity of Fig. 6
The proportional curve of pressure and irradiation level, which can obtain Vout, to become smaller, thus MCU (gear instruction lamp controller) analog detection Port detecting
Reduce to voltage Vout, MCU exports corresponding pwm signal LED drive circuit 02 according to the real-time sunlight transducing signal received, makes figure
Triode Q1 is connected degree (duty ratio) and increases in 7, to reduce collector (C) voltage of triode Q1, makes gear indicator light
The electric current of LED increases, and gear indicator lamp brightness is reinforced.
When light intensity dies down, sunlight sensor 04 acquires light intensity, by the output voltage of Fig. 6 and the proportionate relationship of irradiation level
Vout, which can be obtained, to become larger, so that MCU analog detection Port detecting reduces to voltage Vout, MCU is passed according to the real-time sunlight received
Sense signal exports corresponding pwm signal to LED drive circuit 02, reduces the conducting degree (duty ratio) of triode Q1 in Fig. 7, from
And increase triode Q1 collector (C) voltage, reduce the electric current for flowing gear indicator light LED, gear indicator lamp brightness weakens.
A kind of gear indicator lamp brightness automatic control circuit based on sunlight sensor provided in an embodiment of the present invention, can fit
For vehicle luminescence component, not merely it is limited to shift indicator, such as instrument dial plate backlight, Air-Conditioning Control Panel or other energy
The component to be shone by LED, but it is necessary to meet following condition for these luminescence components:
1) the AD value signal of sunlight sensor 04 can be acquired；
2) according to the intensity of light source, corresponding pwm signal is exported to the above LED drive circuit.
A kind of gear indicator lamp brightness automatic control circuit based on sunlight sensor provided in an embodiment of the present invention uses
Real time environment light intensity in 04 collecting vehicle of sunlight sensor of peripheral hardware further exports voltage corresponding with ambient light intensity
Lamp controller is indicated to gear, and the controller is different according to the sunlight signal received, accordingly exports different pwm signals and is given to
The driving circuit and illuminating circuit of gear indicator light follow ambient light strong to realize real-time control gear indicator lamp brightness
The raising of degree and increase, reduce and reduce, improve the comfort level that people experiences gear indicator light, improve driving for gear indicator light
Sail security performance.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, other any changes, modifications, substitutions, combinations, simplifications made without departing from the spirit and principles of the present invention,
It should be equivalent substitute mode, be included within the scope of the present invention.
Claims (8)
1. a kind of gear indicator lamp brightness automatic control circuit based on sunlight sensor, be equipped with gear instruction controller and and its
The LED drive circuit of connection, and LED illuminating circuit and the connection gear instruction control of the connection LED drive circuit
The working power of device and the LED illuminating circuit, which is characterized in that be additionally provided with the connection gear instruction controller and the work
Make the sunlight sensor of power supply；
The working power is used to indicate controller and the power supply of LED illuminating circuit for the sunlight sensor, gear；
The sunlight sensor under the power supply of the working power for acquiring ambient light strength signal in real time and being sent to
The gear indicates controller；
The gear instruction controller exports corresponding pwm signal described in for the ambient light intensity based on the received
LED drive circuit；
The LED drive circuit drives the LED illuminating circuit to issue corresponding LED for the pwm signal based on the received
Gear indicates light.
2. a kind of gear indicator lamp brightness automatic control circuit based on sunlight sensor as described in claim 1, feature
Be: the sunlight sensor sets the gear of socket connection setting in the car by vehicle and indicates controller, working power；Institute
It states vehicle and sets socket and be equipped with and believe corresponding to the first optical signal incoming end, the power supply of the working power and gear instruction controller
Number end, the power supply signal end includes power positive end and the first power cathode end.
3. a kind of gear indicator lamp brightness automatic control circuit based on sunlight sensor as claimed in claim 2, feature
Be: the sunlight sensor is equipped with photodiode (D1) and is connected to the first resistor at the both ends the photodiode (D1)
(R1), it is additionally provided with one end and connects the positive terminal of the photodiode (D1), the other end for connecting the electricity that the vehicle sets socket
The second resistance (R2) of source positive terminal, the positive terminal of the photodiode (D1) are used to connect the first electricity that the vehicle sets socket
Source negative pole end, the first optical signal that the negative pole end of the photodiode (D1) is also used to connect the gear instruction controller connect
Enter end.
4. a kind of gear indicator lamp brightness automatic control circuit based on sunlight sensor as claimed in claim 3, feature
Be: the LED drive circuit is equipped with 3rd resistor (R3), the 4th resistance (R4), triode (Q1)；The 3rd resistor (R3)
The pwm signal output end of the gear instruction controller is connected between the base stage (B) of the triode (Q1), the described 4th
Resistance (R4) is connected between the base stage (B) of the triode (Q1) and ground；The emitter of the triode (Q1) is grounded, current collection
Pole (C) connects the LED illuminating circuit.
5. a kind of gear indicator lamp brightness automatic control circuit based on sunlight sensor as claimed in claim 4, feature
Be: the LED illuminating circuit is equipped with the 5th resistance (R5), the 6th resistance (R6), gear indication LED (D2)；The gear refers to
Show that the negative pole end of LED (D2) connects the collector (C) of the triode (Q1)；5th resistance (R5) and the 6th resistance (R6)
It is connected in parallel between the positive terminal and the working power of the gear indication LED (D2).
6. a kind of gear indicator lamp brightness automatic control circuit based on sunlight sensor as claimed in claim 2, feature
Be: the vehicle sets socket and is additionally provided with vacant end.
7. a kind of gear indicator lamp brightness automatic control circuit based on sunlight sensor as claimed in claim 6, feature
Be: the vehicle sets socket and is also reserved with the second optical signal incoming end, second source negative pole end.
8. a kind of gear indicator lamp brightness automatic control circuit based on sunlight sensor as described in claim 1, feature
Be: the voltage that the working power is output to the sunlight sensor is 5V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811608712.6A CN109640449A (en) | 2018-12-27 | 2018-12-27 | A kind of gear indicator lamp brightness automatic control circuit based on sunlight sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811608712.6A CN109640449A (en) | 2018-12-27 | 2018-12-27 | A kind of gear indicator lamp brightness automatic control circuit based on sunlight sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109640449A true CN109640449A (en) | 2019-04-16 |
Family
ID=66078208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811608712.6A Withdrawn CN109640449A (en) | 2018-12-27 | 2018-12-27 | A kind of gear indicator lamp brightness automatic control circuit based on sunlight sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109640449A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111867193A (en) * | 2020-05-28 | 2020-10-30 | 东风电驱动***有限公司 | Brightness self-adaption device for instrument alarm indicator lamp |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105952888A (en) * | 2016-04-25 | 2016-09-21 | 福建省汽车工业集团云度新能源汽车股份有限公司 | Gear display method and system for electric vehicle |
| CN106875897A (en) * | 2016-12-23 | 2017-06-20 | 惠州市德赛西威汽车电子股份有限公司 | A kind of touch-screen automatic brightness regulation circuit |
| CN107241825A (en) * | 2017-05-15 | 2017-10-10 | 惠州市德赛西威汽车电子股份有限公司 | One kind realizes the uniform method of automobile trim turn button indicator lamp brightness and knob structure |
| CN107864534A (en) * | 2017-11-30 | 2018-03-30 | 惠州市德赛西威汽车电子股份有限公司 | A kind of atmosphere circuit for lamp for automatically controlling brightness |
-
2018
- 2018-12-27 CN CN201811608712.6A patent/CN109640449A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105952888A (en) * | 2016-04-25 | 2016-09-21 | 福建省汽车工业集团云度新能源汽车股份有限公司 | Gear display method and system for electric vehicle |
| CN106875897A (en) * | 2016-12-23 | 2017-06-20 | 惠州市德赛西威汽车电子股份有限公司 | A kind of touch-screen automatic brightness regulation circuit |
| CN107241825A (en) * | 2017-05-15 | 2017-10-10 | 惠州市德赛西威汽车电子股份有限公司 | One kind realizes the uniform method of automobile trim turn button indicator lamp brightness and knob structure |
| CN107864534A (en) * | 2017-11-30 | 2018-03-30 | 惠州市德赛西威汽车电子股份有限公司 | A kind of atmosphere circuit for lamp for automatically controlling brightness |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111867193A (en) * | 2020-05-28 | 2020-10-30 | 东风电驱动***有限公司 | Brightness self-adaption device for instrument alarm indicator lamp |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190416 |