CN107071984A - A kind of hand-held terminal device supply self adaptation dynamic management system and method - Google Patents
A kind of hand-held terminal device supply self adaptation dynamic management system and method Download PDFInfo
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- CN107071984A CN107071984A CN201710378956.9A CN201710378956A CN107071984A CN 107071984 A CN107071984 A CN 107071984A CN 201710378956 A CN201710378956 A CN 201710378956A CN 107071984 A CN107071984 A CN 107071984A
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- led
- terminal device
- hand
- pin
- held terminal
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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
Abstract
The present invention relates to a kind of hand-held terminal device supply self adaptation dynamic management system, it is characterised in that including controller, illumination detection circuit, LED light adjusting circuits and LED, and the controller is connected respectively with illumination detection circuit, LED light adjusting circuits, LED.The invention also discloses a kind of hand-held terminal device supply self adaptation dynamic management approach.Advantages of the present invention is embodied in：The present invention utilizes sensor technology, makes handheld device intelligent, and handheld device adjusts brightness of backlight, reduce system power dissipation, extend the device standby time, reach energy-saving effect according to use environment light situation.
Description
Technical field
The present invention relates to technical field of power management, and in particular to a kind of hand-held terminal device supply self adaptation is dynamically managed
System and method.
Background technology
The battery standby time of hand-held terminal device is one of the key technical indexes of hand-held terminal device, efficient power supply
Management is the important technical for extending battery standby time.The LCD display module of small size turns into hand-held digital and produced already
The important component of product, and the backlight of LCD screen is hand-held terminal device power consumption larger unit, whether backlight is used reasonable
Directly affect battery standby time.The backlight of existing market hand-held terminal device LCD screen, which opens time main basis and whether there is, to be made
With decision.Do not used in certain time, hand-held terminal device is closed automatically, while the brightness of backlight of LCD screen is fixed
, it is impossible to brightness of backlight is automatically adjusted according to use environment.
The content of the invention
The purpose of the present invention is for of the prior art not enough dynamic there is provided a kind of hand-held terminal device supply self adaptation
Management system and method, using sensor technology, make handheld device intelligent, handheld device according to use environment light situation,
Brightness of backlight is adjusted, makes backlight streetlamp energy-saving, reduces system power dissipation, extend the device standby time.
To achieve the above object, the invention discloses following technical scheme：
A kind of hand-held terminal device supply self adaptation dynamic management system, including controller, illumination detection circuit, LED are adjusted
Optical circuit and LED, the controller are connected respectively with illumination detection circuit, LED light adjusting circuits, LED；
Wherein, illumination detection circuit includes illuminance transducer and pull-up resistor, and two pull-up resistors are connected in parallel, wherein one
Pull-up resistor one end is connected between illuminance transducer and the SDA pin of controller, other end connection VCC, another pull-up electricity
Resistance one end is connected between illuminance transducer and the SCL pin of controller, other end connection VCC；
LED light adjusting circuits include input capacitance, output capacitance, boost capacitor, resistance, white light LEDs, and input capacitance one is terminated
The V of LED driverINPin, other end ground connection, output capacitance one terminates the V of LED driverOUTPin, other end ground connection, resistance one end
Meet LED driver ISETPin, other end ground connection, first boost capacitor one end connection LED driver C1+ pin, other end connection LED
Driver C1- pin, second boost capacitor one end connection LED driver C2+ pin, other end connection LED driver C2- pin, 4 are white
Light LED one end connects D1, D2, D3, D4 pin of LED driver, other end ground connection respectively.
Further, functional circuit is additionally provided with, functional circuit is connected with controller.
Further, the controller model ATmega16.
Further, the illuminance transducer model TSL2561 in the illumination detection circuit.
Further, the LED driver model AP3605 in the LED light adjusting circuits.
The invention also discloses a kind of hand-held terminal device supply self adaptation dynamic management approach, a kind of handheld terminal is utilized
The adaptive dynamic management system of device power supply (DPS), comprises the following steps：
S1 is initialized to ATmega16 controllers, including I2C buses and PWM functions are initialized, at the beginning of I2C buses
The subprogram of beginningization is I2C_INITIATE functions, is PWM_INITIATE functions to the subprogram that PWM functions are initialized；
S2 reads and writes TSL2561 chips, including according to I2C authorizing standard read operation subprogram TSL2561READ functions and writes
Function subprogram TSL2561_WRITE functions, before TSL2561 is read, need to set control word, product first according to specific system
Between timesharing, gain parameter set, then wait conversion end, read TSL2561 data；
S3 is calculated after the numerical value for the register that brightness value reads TSL2561 passages 0 and passage 1, logical by detect two
The illuminance value in road is converted into visible light illumination, and makes the brightness value that result is sensed close to human eye by calculating；
S4ATmega16 controllers compare indoor environment brightness value with setting value, by the output of subprogram PWM functions not
With the pwm signal of dutycycle, LED brightness is adjusted.
Further, in the step S3, calculated using the TSL2561 manufacturer TAOS approximate calculation brightness values provided
Subroutine CaleuLux functions.
A kind of hand-held terminal device supply self adaptation dynamic management system disclosed by the invention and method, with following beneficial
Effect：
The present invention utilizes sensor technology, makes handheld device intelligent, and handheld device is adjusted according to use environment light situation
Whole brightness of backlight, reduces system power dissipation, extends the device standby time, reaches energy-saving effect.
Brief description of the drawings
Fig. 1 is the system block diagram of the present invention,
Fig. 2 is LED light adjusting circuit figures,
Fig. 3 is illumination detection circuit figure,
Wherein,
1- illumination detection circuits, 2-LED lamps, 3- controllers, 4-LED light adjusting circuits, 5- functional circuits.
Embodiment
The technical scheme in the embodiment of the present invention will be clearly and completely described below, it is clear that described implementation
Example only a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention, this area is common
The every other embodiment that technical staff is obtained under the premise of creative work is not made, belongs to the model that the present invention is protected
Enclose.
The core of the present invention is to provide a kind of hand-held terminal device supply self adaptation dynamic management system and method, utilizes biography
Sensor technology, makes handheld device intelligent, and handheld device adjusts brightness of backlight, make backlight according to use environment light situation
Streetlamp energy-saving, reduces system power dissipation, extends the device standby time.
Refer to Fig. 1.
A kind of hand-held terminal device supply self adaptation dynamic management system, including controller 3, illumination detection circuit 1, LED
Light adjusting circuit 4 and LED 2, the controller 3 are connected respectively with illumination detection circuit 1, LED light adjusting circuits 4, LED 2；
Wherein, illumination detection circuit 1 includes illuminance transducer and pull-up resistor, and two pull-up resistors are connected in parallel, wherein
One pull-up resistor one end is connected between illuminance transducer and the SDA pin of controller, other end connection VCC, another pull-up
Resistance one end is connected between illuminance transducer and the SCL pin of controller, other end connection VCC；
LED light adjusting circuits 4 include input capacitance, output capacitance, boost capacitor, resistance, white light LEDs, input capacitance one end
Meet the V of LED driverINPin, other end ground connection, output capacitance one terminates the V of LED driverOUTPin, other end ground connection, resistance one
Terminate LED driver ISETPin, other end ground connection, first boost capacitor one end connection LED driver C1+ pin, other end connection
LED driver C1- pin, second boost capacitor one end connection LED driver C2+ pin, other end connection connection LED driver C2-
Pin.4 white light LEDs one end connect D1, D2, D3, D4 pin of LED driver, other end ground connection respectively.Access after lithium battery, pass through
Adjust capacitance size to control AP3605 to produce the size of output current, white LED driver electric current is set by adjusting resistance
Size.
In an embodiment of the present invention, functional circuit 5 is additionally provided with, functional circuit 5 is connected with controller 3, for reality
Existing control function.
In an embodiment of the present invention, the model ATmega16 of controller 3.Controller ATmega16 is AVR
Most representational a single-chip microcomputer in series.It is fast using Reduced Instruction Set Computer Architecture, the speed of service, and includes PWM letters
A variety of functions such as number output, I2C buses.
In an embodiment of the present invention, the illuminance transducer model TSL2561 in the illumination detection circuit 1.
TSL2561 is a kind of digital conversion chip of illuminance of programmable flexible configuration.As shown in Fig. 2 chip internal is integrated with two
Passage：Passage 0 and passage 1, each passage have a photodiode.Integral a/d converter is to flowing through photodiode
Electric current is integrated and is converted to digital quantity, and transformation result is deposited into people's chip internal passage 0 after conversion end and passage 1 is respective
Data register in, miscellaneous equipment passes through data in 12C bus read data registers and can after formula is calculated
Draw visible light illumination value.
In an embodiment of the present invention, the LED driver model AP3605 in the LED light adjusting circuits 4, is utilized
AP3605 is used as hand-held terminal device backlight lamp dimming device.
The invention also discloses a kind of hand-held terminal device supply self adaptation dynamic management approach, a kind of handheld terminal is utilized
The adaptive dynamic management system of device power supply (DPS), comprises the following steps：
S1 is initialized to ATmega16 controllers, including I2C buses and PWM functions are initialized, and successfully uses this
Two kinds of functions, first have to register and I/O mouthful initialization involved by both functions, the subprogram of initialization is I2C_
INITIATE functions and PWM_INITIATE functions.
S2 reads and writes TSL2561 chips, including according to I2C authorizing standard read operation subprogram TSL2561READ functions and writes
Function subprogram TSL2561_WRITE functions, before TSL2561 is read, need to set control word, product first according to specific system
Between timesharing, gain parameter set, then wait conversion end, read TSL2561 data；
S3 is calculated after the numerical value for the register that brightness value reads TSL2561 passages 0 and passage 1, logical by detect two
The illuminance value in road is converted into visible light illumination, and makes the brightness value that result is sensed close to human eye by calculating；
S4ATmega16 controllers compare indoor environment brightness value with setting value, by the output of subprogram PWM functions not
With the pwm signal of dutycycle, LED brightness is adjusted.
In an embodiment of the present invention, in the step S3, it is contemplated that controller ATmega16 chip microcontrollers are floated
Point processing is more complicated, the approximate calculation brightness value arithmetic subroutine provided using TSL2561 manufacturer TAOS
CaleuLux functions.
Described above is only the preferred embodiment of the present invention, rather than its limitations；Although it should be pointed out that with reference to above-mentioned each
The present invention is described in detail embodiment, it will be understood by those within the art that, it still can be to above-mentioned each
Technical scheme described in embodiment is modified, or carries out equivalent substitution to which part or all technical characteristic；And this
A little modifications and replacement, do not make the essence of corresponding technical scheme depart from the scope of various embodiments of the present invention technical scheme.
Claims (7)
1. a kind of hand-held terminal device supply self adaptation dynamic management system, it is characterised in that including controller, luminance detection electricity
Road, LED light adjusting circuits and LED, the controller are connected respectively with illumination detection circuit, LED light adjusting circuits, LED；
Wherein, illumination detection circuit includes illuminance transducer and pull-up resistor, and two pull-up resistors are connected in parallel, wherein on one
Pull-up resistor one end is connected between illuminance transducer and the SDA pin of controller, other end connection VCC, another pull-up resistor one
End is connected between illuminance transducer and the SCL pin of controller, other end connection VCC；
LED light adjusting circuits include input capacitance, output capacitance, boost capacitor, resistance, white light LEDs, the termination of input capacitance one LED
The V of driverINPin, other end ground connection, output capacitance one terminates the V of LED driverOUTPin, other end ground connection, resistance one is terminated
LED driver ISETPin, other end ground connection, first boost capacitor one end connection LED driver C1+ pin, other end connection LED drives
Dynamic device C1- pin, second boost capacitor one end connection LED driver C2+ pin, other end connection LED driver C2- pin, 4 white lights
LED one end connects D1, D2, D3, D4 pin of LED driver, other end ground connection respectively.
2. a kind of hand-held terminal device supply self adaptation dynamic management system according to claim 1, it is characterised in that also
Provided with functional circuit, functional circuit is connected with controller.
3. a kind of hand-held terminal device supply self adaptation dynamic management system according to claim 1, it is characterised in that institute
State controller model ATmega16.
4. a kind of hand-held terminal device supply self adaptation dynamic management system according to claim 1, it is characterised in that institute
State the illuminance transducer model TSL2561 in illumination detection circuit.
5. a kind of hand-held terminal device supply self adaptation dynamic management system according to claim 1, it is characterised in that institute
State the LED driver model AP3605 in LED light adjusting circuits.
6. a kind of hand-held terminal device supply self adaptation dynamic management approach, it is characterised in that utilize a kind of hand-held terminal device
Supply self adaptation dynamic management system, comprises the following steps：
S1 is initialized to ATmega16 controllers, including I2C buses and PWM functions are initialized, to I2C bus initializations
Subprogram be I2C_INITIATE functions, to PWM functions initialize subprogram be PWM_INITIATE functions；
S2 reads and writes TSL2561 chips, including according to I2C authorizing standard read operation subprogram TSL2561READ functions and write operation
Subprogram TSL2561_WRITE functions, before TSL2561 is read, when needing to set control word, integration according to specific system first
Between, gain parameter set, then wait conversion end, read TSL2561 data；
S3 is calculated after the numerical value for the register that brightness value reads TSL2561 passages 0 and passage 1, by detect two passages
Illuminance value is converted into visible light illumination, and makes the brightness value that result is sensed close to human eye by calculating；
S4ATmega16 controllers compare indoor environment brightness value with setting value, and exporting difference by subprogram PWM functions accounts for
The pwm signal of empty ratio, adjusts LED brightness.
7. a kind of hand-held terminal device supply self adaptation dynamic management approach according to claim 6, it is characterised in that institute
State in step S3, the approximate calculation brightness value arithmetic subroutine CaleuLux letters provided using TSL2561 manufacturer TAOS
Number.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710378956.9A CN107071984A (en) | 2017-05-25 | 2017-05-25 | A kind of hand-held terminal device supply self adaptation dynamic management system and method |
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| CN201710378956.9A CN107071984A (en) | 2017-05-25 | 2017-05-25 | A kind of hand-held terminal device supply self adaptation dynamic management system and method |
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| EP2519019A1 (en) * | 2011-04-28 | 2012-10-31 | Eldon Technology Limited | Smart illumination for electronic devices |
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| CN203482448U (en) * | 2013-07-22 | 2014-03-12 | 厦门厦荣达电子有限公司 | Self-adaptive LED lamp dimming control system |
| CN203722865U (en) * | 2013-12-11 | 2014-07-16 | 无锡职业技术学院 | Digital display multifunctional led desk lamp |
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| WO2008120133A2 (en) * | 2007-03-29 | 2008-10-09 | Koninklijke Philips Electronics N.V. | Method and device for driving an led system |
| EP2519019A1 (en) * | 2011-04-28 | 2012-10-31 | Eldon Technology Limited | Smart illumination for electronic devices |
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| CN202634837U (en) * | 2012-06-25 | 2012-12-26 | 同济大学 | Area return circuit controller in intelligent roadway lighting system |
| CN203482448U (en) * | 2013-07-22 | 2014-03-12 | 厦门厦荣达电子有限公司 | Self-adaptive LED lamp dimming control system |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170818 |
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| RJ01 | Rejection of invention patent application after publication |