CN115312012A - LCD electric meter display method, device and system for reducing chip power consumption - Google Patents
LCD electric meter display method, device and system for reducing chip power consumption Download PDFInfo
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
- G09G2330/02—Details of power systems and of start or stop of display operation
- G09G2330/021—Power management, e.g. power saving
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2360/00—Aspects of the architecture of display systems
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- G09G2360/121—Frame memory handling using a cache memory
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Abstract
The application relates to a method, a device and a system for displaying an LCD electric meter, which reduce the power consumption of a chip, wherein the method comprises the following steps: setting a display mode in a low-power consumption working mode when the main control chip is in a normal working mode, and writing the ammeter information needing to be updated into the first frame buffer and/or the second frame buffer; controlling the main control chip to enter a low-power-consumption working mode; and under the low-power-consumption working mode, the LCD controller automatically reads the ammeter information in the first frame buffer and/or the second frame buffer according to the set display mode and displays the ammeter information on the LCD display screen. Through the application, the problems of high chip power consumption and high display power consumption of the LCD electric meter under normal work are solved, and the power consumption of the chip is reduced while the intelligent electric meter normally displays the power.
Description
Technical Field
The application relates to the field of intelligent electric meters, in particular to an LCD electric meter display method, device and system for reducing chip power consumption.
Background
At present, most of intelligent electric meters on the market adopt LCD screen display, are generally supplied with power by batteries, measure and control the electric energy, automatically complete ladder charges of electricity, store functions such as ammeter data, but during LCD screen display, ammeter main control chip is in normal operating condition, can cause the whole consumption height of intelligent electric meter, reduces life.
In the prior art, in order to reduce power consumption and improve the service life of an electric meter, a scheme is generally adopted as follows: the LCD screen does not display at ordinary times, and data is displayed once when a user triggers the LCD screen, but the data can prevent the user from viewing information such as power consumption.
At present, no effective solution is provided for the problems of high chip power consumption and high display power consumption in normal work of an LCD electric meter in the related art.
Disclosure of Invention
The embodiment of the application provides a method, a device and a system for displaying an LCD (liquid crystal display) electric meter, which are used for reducing chip power consumption so as to at least solve the problems of high chip power consumption and high display power consumption when the LCD electric meter works normally in the related art.
In a first aspect, an embodiment of the present application provides an LCD electric meter display method for reducing chip power consumption, where the method includes:
setting a display mode in a low-power consumption working mode when the main control chip is in a normal working mode, and writing the ammeter information needing to be updated into the first frame buffer and/or the second frame buffer;
controlling the main control chip to enter a low-power-consumption working mode;
and under the low-power-consumption working mode, the LCD controller automatically reads the ammeter information in the first frame buffer and/or the second frame buffer according to the set display mode and displays the ammeter information on an LCD display screen.
In some embodiments, when the main control chip is in the normal operating mode, the setting of the display mode in the low power consumption operating mode includes:
the main control chip is in a normal working mode, and four display modes which are set in a low-power consumption working mode are respectively as follows:
the method comprises the steps of displaying the ammeter information in the first frame buffer or the second frame buffer all the time, switching and displaying the ammeter information in the first frame buffer and the second frame buffer, displaying the ammeter information in the first frame buffer or the second frame buffer at intervals, and not displaying the ammeter information.
In some embodiments, the method further includes, when the main control chip is in the normal operating mode:
setting wake-up time through an RTC unit when the main control chip is in a normal working mode;
and triggering and awakening the main control chip according to the awakening time in a timing mode, so that the main control chip is switched back to a normal working mode from a low-power-consumption working mode.
In some embodiments, controlling the master control chip to enter the low power consumption operation mode includes:
and closing peripheral functions except the LCD controller, the first frame buffer, the second frame buffer and the RTC unit in the main control chip, and entering a low-power-consumption working mode, wherein the peripheral functions comprise a UART interface function, an SPI interface function and an I2C interface function.
In some embodiments, if the display mode set in the low power consumption operating mode is to switch and display the electric meter information in the first frame buffer and the second frame buffer, the switching time of the switching display is synchronously set;
and if the display mode in the set low-power-consumption working mode is to display the ammeter information in the first frame buffer at intervals, synchronously setting the interval time of the interval display.
In some embodiments, switching the main control chip from the low power consumption operation mode back to the normal operation mode further comprises:
and actively awakening the main control chip through a physical key to switch the main control chip back to a normal working mode.
In a second aspect, an embodiment of the present application provides an LCD electric meter display device for reducing chip power consumption, where the device is capable of performing the method according to any one of the above first aspects, and the device includes a main control chip, an LCD display screen, and a physical key, where the main control chip includes an LCD controller, a first frame buffer, a second frame buffer, and an RTC unit.
In a third aspect, an embodiment of the present application provides an LCD electric meter display system for reducing chip power consumption, where the system includes a configuration module, a mode switching module, and a display module;
the configuration module is used for setting a display mode in a low-power consumption working mode when the main control chip is in a normal working mode, and writing the ammeter information needing to be updated into the first frame buffer and/or the second frame buffer;
the mode switching module is used for controlling the main control chip to enter a low-power-consumption working mode;
and the display module is used for automatically reading the ammeter information in the first frame buffer and/or the second frame buffer by the LCD controller according to the set display mode in the low-power-consumption working mode and displaying the ammeter information on an LCD display screen.
In some embodiments, the configuration module is further configured to set four display modes in a low power consumption operating mode when the main control chip is in a normal operating mode, where the four display modes are respectively: the method comprises the steps of displaying the ammeter information in the first frame buffer or the second frame buffer all the time, switching and displaying the ammeter information in the first frame buffer and the second frame buffer, displaying the ammeter information in the first frame buffer or the second frame buffer at intervals, and not displaying the ammeter information.
In some embodiments, the configuration module is further configured to set a wakeup time by the RTC unit when the main control chip is in a normal operating mode; and triggering and awakening the main control chip according to the awakening time in a timing mode, so that the main control chip is switched from a low-power-consumption working mode to a normal working mode.
Compared with the prior art, the method, the device and the system for displaying the LCD ammeter with the reduced chip power consumption provided by the embodiment of the application set the display mode in the low power consumption working mode when the main control chip is in the normal working mode, and write the ammeter information needing to be updated into the first frame buffer and/or the second frame buffer; controlling the main control chip to enter a low-power-consumption working mode; under the low-power consumption mode, the LCD controller automatically reads the ammeter information in the first frame buffer and/or the second frame buffer according to the set display mode, and displays the ammeter information on the LCD display screen, so that the problems of high chip power consumption and high display power consumption of the LCD ammeter under normal work are solved, and the power consumption of the chip is reduced while the intelligent ammeter normally displays the ammeter.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a flow chart of steps of an LCD electricity meter display method for reducing chip power consumption according to an embodiment of the application;
FIG. 2 is a block diagram of a structure of an LCD electricity meter display device for reducing chip power consumption according to an embodiment of the application;
FIG. 3 is a block diagram of a structure of an LCD electric meter display system for reducing chip power consumption according to an embodiment of the application;
fig. 4 is an internal structural diagram of an electronic device according to an embodiment of the present application.
Description of the drawings: 31. a configuration module; 32. a mode switching module; 33. and a display module.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be described and illustrated below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments provided in the present application without any inventive step are within the scope of protection of the present application.
It is obvious that the drawings in the following description are only examples or embodiments of the present application, and that it is also possible for a person skilled in the art to apply the present application to other similar contexts on the basis of these drawings without inventive effort. Moreover, it should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions must be made to achieve the developers' specific goals, such as compliance with system-related and business-related constraints, which may vary from one implementation to another.
Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the specification. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of ordinary skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments without conflict.
Unless defined otherwise, technical or scientific terms referred to herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which this application belongs. Reference to "a," "an," "the," and similar words throughout this application are not to be construed as limiting in number, and may refer to the singular or the plural. The use of the terms "including," "comprising," "having," and any variations thereof herein, is meant to cover a non-exclusive inclusion; for example, a process, method, system, article, or apparatus that comprises a list of steps or modules (elements) is not limited to the listed steps or elements, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. Reference to "connected," "coupled," and the like in this application is not intended to be limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The term "plurality" as referred to herein means two or more. "and/or" describes the association relationship of the associated object, indicating that there may be three relationships, for example, "a and/or B" may indicate: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. Reference herein to the terms "first," "second," "third," and the like, are merely to distinguish similar objects and do not denote a particular ordering for the objects.
The embodiment of the application provides an LCD electric meter display method for reducing chip power consumption, fig. 1 is a flow chart of steps of the LCD electric meter display method for reducing chip power consumption according to the embodiment of the application, and as shown in fig. 1, the method comprises the following steps:
step S102, setting a display mode in a low-power consumption working mode when the main control chip is in a normal working mode, and writing the ammeter information needing to be updated into a first frame buffer and/or a second frame buffer;
specifically, when the main control chip is in the normal operating mode, four display modes are set in the low power consumption operating mode, which are respectively:
the method comprises the steps of displaying the ammeter information in the first frame buffer or the second frame buffer all the time, switching and displaying the ammeter information in the first frame buffer and the second frame buffer, displaying the ammeter information in the first frame buffer or the second frame buffer at intervals, and not displaying the ammeter information.
Preferably, if the display mode set in the low power consumption operating mode is to switch and display the ammeter information in the first frame buffer and the second frame buffer, the switching time for switching and displaying is set synchronously; and if the set display mode in the low-power-consumption working mode is to display the ammeter information in the first frame buffer at intervals, synchronously setting interval time of interval display.
Optionally, when the main control chip is in a normal working mode, the wake-up time can be set through the RTC unit; the main control chip is triggered and awakened regularly according to the awakening time, so that the main control chip is switched back to the normal working mode from the low-power-consumption working mode, the ammeter information is updated in the normal working mode, namely in the awakening period, the main control chip only needs to be awakened once to update the ammeter information, the main control chip can be in the low-power-consumption mode in most of time, and the ammeter power consumption can be effectively reduced.
It should be noted that the main control Chip refers to a Micro Control Unit (MCU), also called a Single Chip Microcomputer (Single Chip Microcomputer), or a Single Chip Microcomputer, and is a Chip-level computer formed by properly reducing the frequency and specification of a Central Processing Unit (CPU), and integrating peripheral interfaces such as a memory (memory), a counter (Timer), a USB, an a/D conversion, a UART, a PLC, a DMA, and even an LCD driving circuit on a Single Chip, and performing different combination control for different application occasions. The RTC unit refers to a Real Time Clock (Real Time Clock) and can wake up the MCU in the low power mode without external interrupt.
Step S104, controlling the main control chip to enter a low-power consumption working mode;
specifically, peripheral functions except for the LCD controller, the first frame buffer, the second frame buffer and the RTC unit in the main control chip are turned off, and a low power consumption operating mode is entered, where the peripheral functions include, but are not limited to, a UART interface function, an SPI interface function and an I2C interface function.
It should be noted that, the control of the main control chip to enter the low power consumption operating mode may be automatically entered without other tasks except the task of displaying the electric meter; or other functions besides the function of manually turning off the display of the electric meter can be actively entered.
Therefore, other functions except the display function of the ammeter are turned off (automatically/actively), a low-power-consumption working mode is entered, and the power consumption of the main control chip can be effectively reduced.
And S106, in the low-power-consumption working mode, the LCD controller automatically reads the ammeter information in the first frame buffer and/or the second frame buffer according to the set display mode, and displays the ammeter information on the LCD display screen.
Specifically, if the display mode is that the electric meter information in the first frame buffer or the second frame buffer is displayed at intervals, the LCD controller reads the electric meter information to display on the LCD display screen according to the interval time displayed at the intervals, that is, the LCD display screen does not display the content in the blank period (if the default display time is 1 second, the interval time is 1 second, the electric meter information is displayed for 1 second in a period of 2 seconds, and no electric meter information is displayed for 1 second), the power consumption of the electric meter can be reduced;
if the display mode is not to display the ammeter information, the main control chip can be actively awakened through the physical keys, so that the main control chip is switched back to the normal working mode, and the ammeter information is actively updated and displayed.
Preferably, the LCD controller automatically reads and displays the ammeter information in the frame buffer, and does not need to call kernel operation software of the main control chip, so that the power consumption of the main control chip can be further effectively reduced.
It should be noted that, the electric meter information stored in the first frame buffer is different from the electric meter information stored in the second frame buffer (i.e. the displayed content is different), and in the case that one LCD screen does not display so many contents at a time, the display efficiency can be improved by using 2 buffers to alternately display.
Through the steps S102 to S106 in the embodiment of the application, the problems of high chip power consumption and high display power consumption of the LCD electric meter under normal work are solved, the normal display of the intelligent electric meter is realized, the power consumption of the chip is reduced, and the electric meter display and the chip power consumption are considered.
It should be noted that the steps illustrated in the above-described flow diagrams or in the flow diagrams of the figures may be performed in a computer system, such as a set of computer-executable instructions, and that, although a logical order is illustrated in the flow diagrams, in some cases, the steps illustrated or described may be performed in an order different than here.
An embodiment of the present application provides an LCD electric meter display device capable of reducing power consumption of a chip, where the device is capable of executing any one of the methods in the above method embodiments, and fig. 2 is a block diagram of a structure of the LCD electric meter display device capable of reducing power consumption of a chip according to the embodiment of the present application, and as shown in fig. 2, the device includes a main control chip, an LCD display screen, and a physical key, where the main control chip includes an LCD controller, a first frame buffer, a second frame buffer, and an RTC unit.
The embodiment of the application provides an LCD electric meter display system for reducing chip power consumption, and fig. 3 is a block diagram of a structure of an LCD electric meter display system for reducing chip power consumption according to the embodiment of the application, and as shown in fig. 3, the system includes a configuration module 31, a mode switching module 32, and a display module 33;
the configuration module 31 is configured to set a display mode in a low power consumption operating mode when the main control chip is in a normal operating mode, and write the electric meter information to be updated into the first frame buffer and/or the second frame buffer;
the mode switching module 32 is used for controlling the main control chip to enter a low-power-consumption working mode;
the display module 33 is used for automatically reading the ammeter information in the first frame buffer and/or the second frame buffer by the LCD controller according to the set display mode in the low-power-consumption working mode, and displaying the ammeter information on the LCD display screen; of course, in the normal mode, the display module 33 may also control the smart meter to display.
Through configuration module 31, mode switch module 32, display module 33 in this application embodiment, the problem that the chip consumption is high and the demonstration consumption is high under the normal work of LCD ammeter has been solved, has realized reducing the consumption of chip when smart electric meter normally shows, has compromise ammeter demonstration and chip consumption.
In some embodiments, the configuration module 31 is further configured to set four display modes in a low power consumption operating mode when the main control chip is in the normal operating mode, where the four display modes are respectively: the method comprises the steps of displaying the ammeter information in the first frame buffer or the second frame buffer all the time, switching and displaying the ammeter information in the first frame buffer and the second frame buffer, displaying the ammeter information in the first frame buffer or the second frame buffer at intervals, and not displaying the ammeter information.
In some embodiments, the configuration module 31 is further configured to set a wakeup time through the RTC unit when the main control chip is in a normal operating mode; and triggering and awakening the main control chip at regular time according to the awakening time so that the main control chip is switched back to the normal working mode from the low-power-consumption working mode.
It should be noted that the above modules may be functional modules or program modules, and may be implemented by software or hardware. For a module implemented by hardware, the modules may be located in the same processor; or the modules can be respectively positioned in different processors in any combination.
The present embodiment also provides an electronic device comprising a memory having a computer program stored therein and a processor configured to execute the computer program to perform the steps of any of the above method embodiments.
Optionally, the electronic apparatus may further include a transmission device and an input/output device, wherein the transmission device is connected to the processor, and the input/output device is connected to the processor.
It should be noted that, for specific examples in this embodiment, reference may be made to the examples described in the foregoing embodiment and optional implementation manners, and details of this embodiment are not described herein again.
In addition, in combination with the LCD electric meter display method for reducing chip power consumption in the above embodiments, the embodiments of the present application may provide a storage medium to implement. The storage medium having stored thereon a computer program; when being executed by a processor, the computer program realizes the LCD electric meter display method for reducing the chip power consumption in the embodiment.
In one embodiment, a computer device is provided, which may be a terminal. The computer device includes a processor, a memory, a network interface, a display screen, and an input device connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device comprises a nonvolatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of an operating system and computer programs in the non-volatile storage medium. The network interface of the computer device is used for communicating with an external terminal through a network connection. The computer program is executed by a processor to implement an LCD electric meter display method that reduces chip power consumption. The display screen of the computer equipment can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, a key, a track ball or a touch pad arranged on the shell of the computer equipment, an external keyboard, a touch pad or a mouse and the like.
In one embodiment, fig. 4 is a schematic diagram of an internal structure of an electronic device according to an embodiment of the present application, and as shown in fig. 4, there is provided an electronic device, which may be a server, and its internal structure diagram may be as shown in fig. 4. The electronic device comprises a processor, a network interface, an internal memory and a non-volatile memory connected by an internal bus, wherein the non-volatile memory stores an operating system, a computer program and a database. The processor is used for providing calculation and control capabilities, the network interface is used for communicating with an external terminal through network connection, the internal memory is used for providing an environment for an operating system and the running of a computer program, the computer program is executed by the processor to realize the LCD electric meter display method for reducing the power consumption of the chip, and the database is used for storing data.
Those skilled in the art will appreciate that the configuration shown in fig. 4 is a block diagram of only a portion of the configuration associated with the present application, and does not constitute a limitation on the electronic device to which the present application is applied, and a particular electronic device may include more or less components than those shown in the drawings, or combine certain components, or have a different arrangement of components.
It will be understood by those skilled in the art that all or part of the processes of the methods of the embodiments described above can be implemented by hardware instructions of a computer program, which can be stored in a non-volatile computer-readable storage medium, and when executed, can include the processes of the embodiments of the methods described above. Any reference to memory, storage, database or other medium used in the embodiments provided herein can include non-volatile and/or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically Programmable ROM (EPROM), electrically Erasable Programmable ROM (EEPROM), or flash memory. Volatile memory can include Random Access Memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), rambus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).
It should be understood by those skilled in the art that various features of the above-described embodiments can be combined in any combination, and for the sake of brevity, all possible combinations of features in the above-described embodiments are not described in detail, but rather, all combinations of features which are not inconsistent with each other should be construed as being within the scope of the present disclosure.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. An LCD electricity meter display method for reducing chip power consumption is characterized by comprising the following steps:
setting a display mode in a low-power consumption working mode when the main control chip is in a normal working mode, and writing the ammeter information needing to be updated into the first frame buffer and/or the second frame buffer;
controlling the main control chip to enter a low-power-consumption working mode;
and under the low-power-consumption working mode, the LCD controller automatically reads the ammeter information in the first frame buffer and/or the second frame buffer according to the set display mode and displays the ammeter information on an LCD display screen.
2. The method of claim 1, wherein setting the display mode in the low power consumption mode of operation when the main control chip is in the normal mode of operation comprises:
when the main control chip is in a normal working mode, four display modes which are set in a low-power consumption working mode are respectively as follows:
the method comprises the steps of displaying the ammeter information in the first frame buffer or the second frame buffer all the time, switching and displaying the ammeter information in the first frame buffer and the second frame buffer, displaying the ammeter information in the first frame buffer or the second frame buffer at intervals, and not displaying the ammeter information.
3. The method of claim 1, wherein the master control chip in the normal operating mode further comprises:
when the main control chip is in a normal working mode, setting wakeup time through the RTC unit;
and triggering and awakening the main control chip according to the awakening time in a timing mode, so that the main control chip is switched back to a normal working mode from a low-power-consumption working mode.
4. The method of claim 1, wherein controlling the master control chip to enter a low power mode of operation comprises:
and closing peripheral functions except the LCD controller, the first frame buffer, the second frame buffer and the RTC unit in the main control chip, and entering a low-power-consumption working mode, wherein the peripheral functions comprise a UART interface function, an SPI interface function and an I2C interface function.
5. The method according to claim 2, wherein if the display mode set in the low power consumption operation mode is to switch and display the electric meter information in the first frame buffer and the second frame buffer, the switching time of the switching display is synchronously set;
and if the display mode in the set low-power-consumption working mode is to display the ammeter information in the first frame buffer at intervals, synchronously setting the interval time of the interval display.
6. The method of claim 3, wherein causing the master control chip to switch from the low power consumption mode of operation back to the normal mode of operation further comprises:
and actively awakening the main control chip through a physical key to switch the main control chip back to a normal working mode.
7. An LCD electric meter display device capable of reducing power consumption of a chip, the device being capable of performing the method of any one of claims 1 to 6, the device comprising a main control chip, an LCD display screen and physical keys, wherein the main control chip comprises an LCD controller, a first frame buffer, a second frame buffer and an RTC unit.
8. The LCD electric meter display system capable of reducing the chip power consumption is characterized by comprising a configuration module, a mode switching module and a display module;
the configuration module is used for setting a display mode in a low-power consumption working mode when the main control chip is in a normal working mode, and writing the ammeter information needing to be updated into the first frame buffer and/or the second frame buffer;
the mode switching module is used for controlling the main control chip to enter a low-power-consumption working mode;
and the display module is used for automatically reading the ammeter information in the first frame buffer and/or the second frame buffer by the LCD controller according to the set display mode in the low-power-consumption working mode and displaying the ammeter information on an LCD display screen.
9. The system of claim 8,
the configuration module is further configured to set four display modes in a low power consumption operating mode when the main control chip is in a normal operating mode, where the four display modes are respectively: the method comprises the steps of displaying the ammeter information in the first frame buffer or the second frame buffer all the time, switching and displaying the ammeter information in the first frame buffer and the second frame buffer, displaying the ammeter information in the first frame buffer or the second frame buffer at intervals, and not displaying the ammeter information.
10. The system of claim 8,
the configuration module is also used for setting the awakening time through the RTC unit when the main control chip is in a normal working mode; and triggering and awakening the main control chip according to the awakening time in a timing mode, so that the main control chip is switched from a low-power-consumption working mode to a normal working mode.
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Citations (7)
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Application publication date: 20221108 |