CN104835437A - Low-power-consumption controller controlling digital tube dynamic display and control method - Google Patents
Low-power-consumption controller controlling digital tube dynamic display and control method Download PDFInfo
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- CN104835437A CN104835437A CN201510257007.6A CN201510257007A CN104835437A CN 104835437 A CN104835437 A CN 104835437A CN 201510257007 A CN201510257007 A CN 201510257007A CN 104835437 A CN104835437 A CN 104835437A
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Abstract
The invention discloses a low-power consumption controller controlling digital tube dynamic display and a control method. The low-power-consumption controller comprises an MCU master controller and a digital tube display connected with the MCU master controller, wherein the digital tube display is provided with a digital tube and a power supply switch. The MCU master controller can turn off the power supply switch of the digital tube and change a system main frequency clock into a low main frequency mode after completing dynamic display for the digital tube, and the system power consumption is also reduced. When digital tube display is required, the power supply switch of the digital tube is turned on, and the system main frequency clock gets into a high main frequency mode at the same time, thereby meeting performance requirements in scanning of the digital tube, and giving prominence to the software-hardware combined mode for power consumption reduction. According to application of the scheme disclosed by the invention, the standby power consumption of the display controller is reduced in the system operation process, thereby further saving the battery electricity quantity of a battery power supply system.
Description
Technical field
The present invention relates to Low-power Technology, mainly relate to a kind of the low power consumption control device and the control method that control charactron Dynamic Announce.
Background technology
Currently substantially allly depend on battery powered electronic system and all require to possess low-power consumption.As small-sized intelligent lighting or energy storage device very high to power consumption requirements.Display module is some indispensable in small-sized energy storage device, needs the information such as the electricity of real-time display battery.So, this just requires that the power consumption requirements of equipment self is very low.
In general, numeral method device self does not possess low-power consumption mode, and display controller is a kind of control system to display module integrated management.Display controller adopts the mode of software and hardware combining to realize low-power consumption.The basic ideas utilizing software control display controller to enter low-power consumption mode are: arranging MCU system dominant frequency clock when system starts is low clock, close the power switch of numeral method device simultaneously.Software detection, the need of display information, if needed, is opened numeral method device power switch and is high clock by system dominant frequency clock setting, meet the dynamic scan process of charactron.When not needing display information, closing numeral method device power switch and arranging system dominant frequency clock is low clock.
In actual applications, display controller constantly controls digital tube display power switch and changes the dominant frequency clock of MCU to reduce the power consumption of entire system.In time not needing the work of numeral method device, cut off the system dominant frequency clock of power supply and reduction MCU, make display controller whole system be in low power consumpting state.
In prior art, be reduce power consumption by control hardware mostly.But the power consumption of MCU self is also larger.Because charactron dynamic scan needs high system dominant frequency clock to support, but high system dominant frequency can increase system power dissipation again.So how making whole system not only meet performance requirement but also reduce power consumption, is the predicament faced by prior art.
Therefore, low power consumption control device and control method that a kind of control charactron Dynamic Announce is newly provided is necessary, to solve the problems of the technologies described above.
Summary of the invention
For Problems existing in background technology, the object of the invention is to provide a kind of low power consumption control device controlling charactron Dynamic Announce, in use numeral method process, display controller can be made to enter low power consumpting state, reduce the power consumption during display controller free time.
For realizing above-mentioned technical purpose, the present invention adopts following technical scheme to be achieved.
A kind of low power consumption control device controlling charactron Dynamic Announce, the numeral method device comprising master controller and be connected with described master controller, wherein, numeral method device is provided with power switch and the charactron that is connected with described power switch and decoder driver, described numeral method device is for receiving the data encoding of master controller transmission and being presented at charactron, described master controller, for controlling the power switch of digital tube display and sending data encoding and varitrol dominant frequency clock, described decoder driver, for receive master controller send data encoding by decode transmissions to charactron.
As preferably, described master controller is have the miniature MCU master controller that low suppling voltage and system clock can change in operational process.
As preferably, described decoder driver is eight segment numeral pipe decoder drivers.
Another object of the present invention is to provide a kind of Low-power-consumptiocontrol control method controlling charactron Dynamic Announce, in use numeral method process, display controller can be made to enter low power consumpting state, reduce the power consumption during display controller free time.
Technical scheme of the present invention is achieved in that a kind of Low-power-consumptiocontrol control method controlling charactron Dynamic Announce, comprises the following steps: first, and master controller cuts out numeral method device power supply switch; Next arranges low system dominant frequency clock; When showing information, master controller sends power supply opening control signal and opens numeral method device power switch and arrange high primary frequency clock; Then the information processing of charactron dynamic scanning displaying is carried out; Show complete, master controller sends electric closing control signal at stop numeral method device power switch and arranges low dominant frequency clock.
As preferably, described master controller is have the miniature MCU master controller that low suppling voltage and system clock can change in operational process.
As preferably, described dominant frequency clock is the system dominant frequency clock of miniature MCU master controller, and unit is hertz.
As preferably, the method changing described dominant frequency clock is change the built-in system dominant frequency clock of miniature MCU master controller.
Beneficial effect of the present invention is: the present invention can meet the balance of system to performance requirement and low-power consumption, and the method possesses use-pattern flexibly, is convenient to Software for Design.System performance can be improved and reduce system power dissipation to greatest extent.Be applicable to requiring that low-power consumption needs high system clock to come in the system of Processing tasks simultaneously.When system needs high system clock to meet system task, system clock can be changed to high clock rate; Again system clock is changed to low clock rate after finishing the work; So not only meet the requirement of low-power consumption but also meet the demand of system task performance.
Accompanying drawing explanation
Fig. 1 is the low power consumption control device structural representation that the present invention controls charactron Dynamic Announce;
Fig. 2 is the basic structure schematic diagram of device in specific embodiment;
Fig. 3 is the Low-power-consumptiocontrol control method process flow diagram that the present invention controls charactron Dynamic Announce;
Fig. 4 is the process flow diagram of the Solution Embodiments of application the present invention program.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
As figure 1 shows low-power consumption mode display controller structural representation in the present invention.This display controller comprises master controller, the numeral method device be connected with described master controller, and wherein, described master controller is have the miniature MCU master controller that low suppling voltage and system clock can change in operational process.Described numeral method device is provided with power switch and the charactron that is connected with described power switch and decoder driver, described numeral method device is for receiving the data encoding of master controller transmission and being presented at charactron, described master controller, for controlling the power switch of digital tube display and sending data encoding and varitrol dominant frequency clock, described decoder driver, for receive master controller send data encoding by decode transmissions to charactron.
In practical application, when there being display request, miniature MCU master controller sends power control signal, opens charactron power switch, and send section control signal and data encoding afterwards, at this moment system works is in high primary frequency state, and system power dissipation is larger.When no display is desired, system no longer sends data encoding and section control signal, closes charactron power switch simultaneously, thus can reduce power consumption.
Power when reduction power consumption described here refers to that numeral method device circuit needs, power-off when not needing; And reduce system dominant frequency clock.In the present invention, display controller comes control hardware and self clock of MCU master controller to reduce power consumption primarily of software, highlights the mode that software and hardware combines and reduces power consumption.
Fig. 2 shows the basic structure schematic diagram of a kind of device embodiment of the present invention.In the present embodiment, comprise MCU master controller, the switching circuit of power supply 101 be connected with described MCU master controller and respectively with miniature MCU master controller and switching circuit of power supply 101 and numeral method and decoding scheme 102.
Wherein, switching circuit of power supply 101, for powering to numeral method and decoding scheme 102, provides switch controlling signal by miniature MCU master controller.Numeral method and decoding scheme 102, select control signal for the display information and section receiving the transmission of miniature MCU master controller.
System is transformed into high power consumption state from low power consumpting state, then is transformed into low power consumpting state.As shown in Figure 2, when having display request, miniature MCU master controller sends power control signal to switching circuit of power supply 101, opening power.Miniature MCU master controller sends section to numeral method and decoding scheme 102 again and selects control signal and display data encoding.When not needing display, miniature MCU master controller sends power control signal to switching circuit of power supply 101, powered-down.Miniature MCU master controller sends section to numeral method and decoding scheme 102 again and selects control signal and display data encoding, and all of the port pin that miniature MCU master controller is corresponding with it drags down.
Application the present embodiment scheme, can control display controller and switch between low-power consumption and high power consumption.Open power supply when needing, when not needing, close power supply, thus reach the object of saving the energy content of battery.
For device provided by the invention, the invention allows for a kind of control method realizing the low power consumption control device controlling charactron Dynamic Announce.
As Fig. 3 shows process flow diagram of the present invention.In the present invention, first with a kind of low dominant frequency clock A initialization system, if need high dominant frequency clock to carry out task process in system cloud gray model, so software change system dominant frequency clock B carries out task process, and after being disposed, systematic evaluation returns clock A.Like this, system is constantly continuous according to demand switches back and forth between dominant frequency clock A and dominant frequency clock B.Can see that the system most of the time operates on low dominant frequency clock A, only have when needing task process and be switched on dominant frequency clock B.Thus system power dissipation reduces and meets performance requirement, and wherein, clock A is low rate clock, and clock B is two-forty clock.
The process flow diagram of a kind of embodiment of the inventive method is shown as Fig. 4.In the present embodiment, reduce specifically comprising the following steps of the method for display controller power consumption:
Step 201: produce display request, miniature MCU master controller sends power supply opening control signal, then system dominant frequency clock is switched to high primary frequency clock B;
Step 202: carry out the information processing of charactron dynamic scanning displaying;
Step 203: show complete, switched system dominant frequency clock is clock A and powered-down power switch, and system enters low power consumpting state.
Wherein, described dominant frequency clock is the system dominant frequency clock of miniature MCU master controller, and unit is hertz, and the method changing described dominant frequency clock is change the built-in system dominant frequency clock of miniature MCU master controller.
In the present embodiment, display controller whole system constantly switches between the two at clock A and clock B.In practical application, display controller overall power consumption reduces for battery power supply system, and use value is very high.
The present invention controls low power consumption control device and the control method of charactron Dynamic Announce, and can meet the balance of system to performance requirement and low-power consumption, the method possesses use-pattern flexibly, is convenient to Software for Design.System performance can be improved and reduce system power dissipation to greatest extent.Be applicable to requiring that low-power consumption needs high system clock to come in the system of Processing tasks simultaneously.When system needs high system clock to meet system task, system clock can be changed to high clock rate; Again system clock is changed to low clock rate after finishing the work; So not only meet the requirement of low-power consumption but also meet the demand of system task performance.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (7)
1. control a low power consumption control device for charactron Dynamic Announce, it is characterized in that: the numeral method device comprising master controller and be connected with described master controller, wherein,
Numeral method device is provided with power switch and the charactron that is connected with described power switch and decoder driver, and described numeral method device is for the data encoding that receives master controller and send and be presented at charactron;
Described master controller, for controlling the power switch of digital tube display and sending data encoding and varitrol dominant frequency clock;
Described decoder driver, for receive master controller send data encoding by decode transmissions to charactron.
2. the low power consumption control device of control charactron Dynamic Announce according to claim 1, is characterized in that: described master controller is have the miniature MCU master controller that low suppling voltage and system clock can change in operational process.
3. the low power consumption control device of control charactron Dynamic Announce according to claim 1, is characterized in that: described decoder driver is eight segment numeral pipe decoder drivers.
4. realize a control method for the low power consumption control device controlling charactron Dynamic Announce, it is characterized in that, comprise the following steps:
S1, master controller cuts out numeral method device power supply switch;
S2, arranges low system dominant frequency clock;
S3, when showing information, master controller sends power supply opening control signal and opens numeral method device power switch and arrange high primary frequency clock;
S4, carries out the information processing of charactron dynamic scanning displaying;
S5, shows complete, and master controller sends electric closing control signal at stop numeral method device power switch and arranges low dominant frequency clock.
5. the Low-power-consumptiocontrol control method of control charactron Dynamic Announce according to claim 4, is characterized in that: described master controller is have the miniature MCU master controller that low suppling voltage and system clock can change in operational process.
6. the Low-power-consumptiocontrol control method of control charactron Dynamic Announce according to claim 4, is characterized in that: described dominant frequency clock is the system dominant frequency clock of miniature MCU master controller, and unit is hertz.
7. the Low-power-consumptiocontrol control method of control charactron Dynamic Announce according to claim 4, is characterized in that: the method changing described dominant frequency clock is change the built-in system dominant frequency clock of miniature MCU master controller.
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2008268263A (en) * | 2007-04-16 | 2008-11-06 | Nagano Keiki Co Ltd | Led display device |
| CN201392644Y (en) * | 2009-03-19 | 2010-01-27 | 四川长虹电器股份有限公司 | Digital device |
| CN102314837A (en) * | 2011-09-08 | 2012-01-11 | 上海北大方正科技电脑***有限公司 | Colored electronic signboard and power-supply control method thereof |
| US20130271514A1 (en) * | 2011-10-04 | 2013-10-17 | Dong Bang Data Technology Co. Ltd. | Led electronic sign board capable of power-saving per pixel line |
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Application publication date: 20150812 |