CN113595376B - Display control system and method for timing shutdown after standby - Google Patents
Display control system and method for timing shutdown after standby Download PDFInfo
- Publication number
- CN113595376B CN113595376B CN202110870337.8A CN202110870337A CN113595376B CN 113595376 B CN113595376 B CN 113595376B CN 202110870337 A CN202110870337 A CN 202110870337A CN 113595376 B CN113595376 B CN 113595376B
- Authority
- CN
- China
- Prior art keywords
- module
- display
- resistor
- capacitor
- triode
- Prior art date
- 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.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/36—Means for starting or stopping converters
-
- G—PHYSICS
- G06—COMPUTING OR CALCULATING; COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
- G06F1/3234—Power saving characterised by the action undertaken
- G06F1/325—Power saving in peripheral device
- G06F1/3265—Power saving in display device
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Landscapes
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Power Engineering (AREA)
- Power Sources (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention discloses a display control system for timing shutdown after standby, comprising: the display comprises an AC-DC power module, a power switch module, a DC-DC module, a timing shutdown driving module, a display main control MCU and a video processing module, wherein the display main control MCU and the video processing module comprise an OSD module, an MCU module, a video input module, a memory module, a display screen, a key input module and an external computer, wherein the memory module, the display screen, the key input module and the external computer are connected with the display main control MCU and the video processing module; the MCU module can read the timing shutdown time set by the user from the storage module through the timing shutdown time data set by the key input module, and when the video input module cannot detect the video input of an external computer, the display enters a standby mode, and the timing shutdown time is reached, the power switch module is turned off through the timing shutdown driving module, and the power supply of the display is turned off. The invention can set the time of timing shutdown, and the display automatically starts to start the function of timing shutdown of the display after standby, thereby reducing the consumption of electric energy.
Description
Technical Field
The invention relates to the technical field of display devices, in particular to a display control system and method for timing shutdown after standby.
Background
The display is a display screen capable of displaying characters, graphics, images and animations, and generally refers to display equipment connected with a host, the display screens of a television and a mobile phone are all known as the display, and the application of the display is wider and wider, and the functions of the display are also more and more. Energy conservation is an important social awareness in the world today, and refers to a series of actions of reducing energy consumption and increasing energy utilization rate as much as possible. The energy conservation definitions proposed in 1979 by the world energy committee are: all measures which are technically feasible, economically reasonable and acceptable to the environment and society are adopted to improve the utilization efficiency of energy resources. At present, people cannot leave computers in work, entertainment, study and other activities. The computer can be provided with a function of timing shutdown. However, the monitor enters standby after receiving no video signal from the computer after the computer is turned off. The display is powered off more energy efficient than the display is standby, but the display has no function of timing the power off. The MCU is still operating in the standby state of the display, and the long-time standby consumes electric energy.
The existing display computer only enters standby after no signal is output, and the display has no function of timing shutdown.
Therefore, the display control system and the method for timing shutdown after standby are provided, so that a user can set timing shutdown time, the display automatically starts to start the function of timing shutdown of the display after entering standby, and the consumption of electric energy is reduced after the display is timing shutdown.
Disclosure of Invention
The invention aims to provide a display control system capable of being shut down at fixed time after standby, so as to solve the problems of irregular shutdown and energy consumption after a display enters standby.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a display control system for post-standby timed shutdown comprising:
the input end of the AC-DC power supply module is connected with the mains supply and is used for converting the alternating-current mains supply into direct current to supply power for the display;
the input end of the power switch module is connected with the output end of the AC-DC power module, and controls the on and off of direct current of the display;
The input end of the DC-DC module is connected with the output end of the power switch module;
The timing shutdown driving module is connected with the power switch module;
The display main control MCU and the video processing module comprise an OSD module, an MCU module and a video input module which are connected with the timing shutdown driving module;
The memory module, the display screen, the key input module and the external computer are connected with the display main control MCU and the video processing module;
The key input module is matched with the OSD module to set and modify the timing shutdown time data of the display, the timing shutdown time data is stored in the memory module, the MCU module can read the timing shutdown time set by a user from the memory module, when the video input module cannot detect the video input of an external computer, the display automatically enters a standby mode, the MCU module starts a timer, the timing shutdown time is reached, and the display main control MCU and the video processing module close the power switch module through the timing shutdown driving module to cut off the power supply of the display.
Further, the timing shutdown driving module comprises a triode Q2, a triode Q3, a resistor R8, a resistor R9, a resistor R10 and a resistor R11; the third end of the triode Q3 is connected with the second end of the power switch, the second end of the triode Q3 is connected with the first end of the power switch, the first end of the triode Q3 is connected with the third end of the triode Q2 after passing through a resistor R11, the second end of the triode Q2 is grounded, the third end of the triode Q2 is connected with a 3.3V power supply after passing through a resistor R9, the first end of the triode Q2 is connected with a 3.3V power supply after passing through a resistor R10 and a resistor R8 in sequence, and the first end of the triode Q2 is connected with a display main control MCU and a GPIO port of a video processing module after passing through the resistor R10.
Further, the display power switch module comprises a first filter circuit, a power switch, a trigger circuit, a switch device, a switch control circuit and a second filter circuit; the input end of the first filter circuit is connected with the output end of the AC-DC power supply module, one end of the power switch is connected with the output end of the AC-DC power supply module, two ends of the power switch are contacted with two input ends of the power generation circuit, the input end of the switching device is connected with the output end of the trigger circuit, the output end of the switching device is connected with one input end of the switch control circuit, the output end of the first filter circuit is connected with the other input end of the switch control circuit, the input end of the second filter circuit is connected with the output end of the switch control circuit, and the output end of the second filter circuit is connected with the display load module.
Further, the trigger circuit comprises a first unidirectional silicon controlled rectifier SCR1, a second unidirectional silicon controlled rectifier SCR2, a diode D1, a diode D2, a resistor R2, a resistor 3 and a capacitor C1; the anode of the first unidirectional silicon controlled rectifier SCR1 is connected with the second end of the power switch, the anode of the diode D1 is connected with the first end of the power switch, the cathode of the diode D1 is connected with the trigger electrode of the first unidirectional silicon controlled rectifier SCR1, the cathode resistor of the first unidirectional silicon controlled rectifier SCR1 is connected with the anode of the diode D2 through a resistor R3, the cathode of the first unidirectional silicon controlled rectifier SCR1 is connected with the input end of the switching device, the anode of the second unidirectional silicon controlled rectifier SCR2 is connected with the first end of the power switch, the trigger electrode of the second unidirectional silicon controlled rectifier SCR2 is connected with the cathode of the diode D2, the cathode of the second unidirectional silicon controlled rectifier SCR2 is grounded, the cathode of the diode D2 is connected with one end of the capacitor C1, and the other end of the capacitor C1 is grounded.
Further, the switch control circuit comprises a MOS chip U1, a capacitor C4, a resistor R12, a resistor R6 and a resistor R7; the S pole of the MOS chip U1 is connected with the output end of the first filter circuit, the S pole of the MOS chip U1 is connected with one end of the capacitor C4, the other end of the capacitor C4 is connected with the G pole of the MOS chip U1, one end of the resistor R6 is connected with the output end of the switching device, the other end of the resistor R6 is connected with one end of the resistor R7, the other end of the resistor R7 is connected with the output end of the first filter circuit, one end of the resistor R12 is connected with a common connection point of the resistor R6 and the resistor R7, the other end of the resistor R12 is connected with the G pole of the MOS chip U1, and the D pole of the MOS chip U1 is connected with the second filter circuit.
Further, the switching device comprises a triode Q1, a first end of the triode Q1 is connected with an output end of the trigger circuit through a resistor R4, a first end of the triode Q1 is grounded after passing through a resistor R5, a second end of the triode Q1 is grounded, and a third end of the triode Q1 is connected with an input end of the switching control circuit.
Further, the first filter circuit includes a capacitor C2 and a capacitor C3; one end of the capacitor C2 is connected with the output end of the AC-DC power supply module, and the other end of the capacitor C is grounded; one end of the capacitor C3 is connected with the output end of the AC-DC power supply module, and the other end of the capacitor C is grounded.
Further, the first filter circuit comprises a capacitor C6 and a capacitor C5; one end of the capacitor C6 is connected with the output end of the switch control circuit, and the other end of the capacitor C is grounded; one end of the capacitor C5 is connected with the output end of the switch control circuit, and the other end of the capacitor C is grounded.
The invention further provides a display control method for the standby time shutdown, which is characterized in that the display control system based on the standby time shutdown performs the following steps:
S1, reading timing shutdown time data set by a user from a memory module;
s2, the video input module detects whether video data is input, if so, the display enters a normal display mode, and if not, the display enters a standby mode and the next step is carried out;
s3, starting a MCU module timer for timing, wherein the timing shutdown time is set by a user;
s4, the MCU module detects whether the timing shutdown time is up, if so, the low potential is output, and the display is shut down through the timing shutdown driving module.
Further, in step S4, if the timed shutdown time is not reached, the video input module detects whether video data is input, and if so, the MCU module timer is turned off and the process goes to step S2.
Compared with the prior art, the invention has the beneficial effects that:
According to the invention, a user can set the time of timing shutdown through the key input module, the time of timing shutdown is reached, the GPIO port of the MCU module outputs low level through the timing shutdown driving module to simulate the action of user key shutdown, the display main control MCU and the video processing module close the power switch module through the timing shutdown driving module to cut off the power supply of the display, the display automatically starts to start the function of timing display shutdown after entering standby, and the consumption of electric energy is reduced after the display is timing shutdown.
Drawings
FIG. 1 is a block diagram of the structure of the present invention;
FIG. 2 is a schematic electrical diagram of the present invention;
FIG. 3 is a circuit diagram of a power switch module according to the present invention;
FIG. 4 is a schematic diagram of a method for a shutdown after standby process according to the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-4, the present invention provides a technical solution: a display control system for post-standby timed shutdown comprising: the input end of the AC-DC power supply module is connected with the mains supply and is used for converting the alternating-current mains supply into direct current to supply power for the display; the input end of the power switch module is connected with the output end of the AC-DC power module, and controls the on and off of direct current of the display; the input end of the DC-DC module is connected with the output end of the power switch module; the timing shutdown driving module is connected with the power switch module; the display main control MCU and the video processing module comprise an OSD module, an MCU module and a video input module which are connected with the timing shutdown driving module; The memory module, the display screen, the key input module and the external computer are connected with the display main control MCU and the video processing module; the power-off time data are stored in the memory module, the MCU module can read the timing power-off time set by a user from the memory module, when the video input module cannot detect video input of an external computer, the display automatically enters a standby mode, the MCU module starts a timer, the timing power-off time is reached, and the display main control MCU and the video processing module close the power switch module through the timing power-off driving module to cut off power supply of the display. The display mainly comprises an AC-DC power supply module, a power switch module, a DC-DC module, a timing shutdown driving module, a display main control MCU and video processing module, a key input module, a memory module and a display module. The display main control MCU and the video processing module consist of an OSD module, an MCU module and a video input module. The power switch module is provided with a power light touch key switch, and the light touch switch controls the starting and the shutdown of the display. And after the power supply is turned off, the direct current output by the power switch module is turned off, so that the display enters a power-off state. When the video input module can not detect the video input of the external computer, the display automatically enters a standby mode. When the display is in a standby mode, the video input module detects a video input signal of an external computer in real time, and the display enters a normal working state after the computer has the video input signal. The display is more energy-saving than the display in the off state because the display main control MCU and the video processing module are always working in the standby state and the display main control MCU and the video processing module are stopped in the off state. The display is provided with default time for timing shutdown after the display enters standby when leaving the factory, (for example, 5 minutes), the display automatically saves energy after timing shutdown, the time for timing shutdown can be freely set, the time data for timing shutdown is stored in the memory module, the key input module can be matched with the OSD module to modify the time data for timing shutdown of the display, and the modified time data for timing shutdown is stored in the memory module. As shown in fig. 1 and fig. 4, the key input module cooperates with the OSD module to set and modify the timing shutdown time data of the display, and stores the timing shutdown time data in the memory module, the MCU module reads the timing shutdown time set by the user from the memory module, when the video input module cannot detect the video input of the external computer, the display automatically enters the standby mode, the MCU module starts the timer, and when the timing shutdown time is reached, the display main control MCU and the video processing module close the power switch module through the timing shutdown driving module, so that the power supply of the display is turned off, the display enters the shutdown state, and the electric energy is saved more than that of the standby state after the display is turned off.
Further, the timing shutdown driving module comprises a triode Q2, a triode Q3, a resistor R8, a resistor R9, a resistor R10 and a resistor R11; the third end of the triode Q3 is connected with the second end of the power switch, the second end of the triode Q3 is connected with the first end of the power switch, the first end of the triode Q3 is connected with the third end of the triode Q2 after passing through a resistor R11, the second end of the triode Q2 is grounded, the third end of the triode Q2 is connected with a 3.3V power supply after passing through a resistor R9, the first end of the triode Q2 is connected with a 3.3V power supply after passing through a resistor R10 and a resistor R8 in sequence, and the first end of the triode Q2 is connected with a display main control MCU and a GPIO port of a video processing module after passing through the resistor R10. As shown in fig. 2-3, the first, second and third terminals of the transistor Q2 and the transistor Q3 are respectively a base b, an emitter e and a collector c in circuit connection with the timing shutdown driving module.
The working state of the timing shutdown driving module before the display starts to work of the MCU module from startup: after the power button is started, the MCU module still needs software after reset to work normally, before the MCU module software does not work yet, the display master control MCU and the GPIO 1 of the video processing module are in a high resistance state, a 3.3V power supply passes through a resistor R8, a high potential is added to the b pole of a triode Q2 after the resistor R10, the c e pole of the triode Q2 is saturated and conducted, then the c pole of the triode Q2 is in a low potential, the low potential is added to the b pole of the triode Q3 after the low potential passes through a resistor R11, the b pole of the triode Q3 is in a low potential to enable the c e pole of the triode Q3 to be cut off, the c e poles of the triode Q3 are respectively connected with two ends of a power switch K1, and the c e cut-off of the triode Q3 does not influence the normal starting of the power supply. That is, after the power button is started, the timing shutdown driving module does not act as the power switch module.
The working state of the timing shutdown driving module when the display is shutdown from standby to timing: after the display works normally, the MCU module can read the timing shutdown time set by the user from the storage module, and when the video input module of the display cannot check the video input signal of the computer, the MCU module starts a timer. The time set by the timer is the time set by the user for timing shutdown. When the timing shutdown time is up, if the video signal input by the computer is not checked, the display main control MCU and the video processing module output a low potential at the GPIO 1 interface, the low potential is added to the b pole of the triode Q2 after passing through the resistor R10, then the c e pole of the triode Q2 is cut off, the c pole of the triode Q2 generates a high potential, the high potential is added to the b pole of the triode Q3 after passing through the resistor R11, then the c e pole of the triode Q3 is saturated and conducted, the c e poles of the triode Q3 are respectively connected with the two ends of the power switch K1, and the timing shutdown driving module acts as the power switch module.
Further, the display power switch module comprises a first filter circuit, a power switch, a trigger circuit, a switch device, a switch control circuit and a second filter circuit; the input end of the first filter circuit is connected with the output end of the AC-DC power supply module, one end of the power switch is connected with the output end of the AC-DC power supply module, two ends of the power switch are contacted with two input ends of the power generation circuit, the input end of the switching device is connected with the output end of the trigger circuit, the output end of the switching device is connected with one input end of the switch control circuit, the output end of the first filter circuit is connected with the other input end of the switch control circuit, the input end of the second filter circuit is connected with the output end of the switch control circuit, and the output end of the second filter circuit is connected with the display load module. The input end of the first filter circuit is connected with the output end of the AC-DC power supply module, and the first filter circuit is used for filtering and reducing alternating current components in direct current voltage as much as possible. As shown in fig. 2-3, the power switch is a power switch of the display, the power switch K1 is a touch button, when the user does not press the touch button K1, the 2 pin and the 1 pin of the touch switch K1 are opened, and when the touch button K1 is pressed, the 2 pin and the 1 pin of the touch switch K1 are closed. The two ends (the 2 pin and the 1 pin of the K1) of the power switch are respectively connected with the two input ends of the trigger circuit, the trigger circuit has the functions of generating trigger conduction voltage according to the opening and closing conditions of the power switch and controlling the on-off of the switching device, the switching control circuit controls whether to supply power to the display load module according to the on-off of the switching device, the input end of the second filter circuit is connected with the output end of the switching control circuit, and the second filter circuit can further reduce alternating current components in direct current voltage and protect the circuit.
Further, in order to generate trigger conduction voltage according to the opening and closing conditions of the power switch and control the on-off of the switching device, the trigger circuit comprises a first unidirectional silicon controlled rectifier SCR1, a second unidirectional silicon controlled rectifier SCR2, a diode D1, a diode D2, a resistor R2, a resistor 3 and a capacitor C1; the anode of the first unidirectional silicon controlled rectifier SCR1 is connected with the second end of the power switch, the anode of the diode D1 is connected with the first end of the power switch, the cathode of the diode D1 is connected with the trigger electrode of the first unidirectional silicon controlled rectifier SCR1, the cathode resistor of the first unidirectional silicon controlled rectifier SCR1 is connected with the anode of the diode D2 through a resistor R3, the cathode of the first unidirectional silicon controlled rectifier SCR1 is connected with the input end of the switching device, the anode of the second unidirectional silicon controlled rectifier SCR2 is connected with the first end of the power switch, the trigger electrode of the second unidirectional silicon controlled rectifier SCR2 is connected with the cathode of the diode D2, the cathode of the second unidirectional silicon controlled rectifier SCR2 is grounded, the cathode of the diode D2 is connected with one end of the capacitor C1, and the other end of the current transformer capacitor C1 is grounded.
As shown in fig. 3, when the display is in an AC power-on state, after the display is normally powered on with AC, the AC outputs a stable 12V power (+12v) after passing through the AC-DC power module, the +12v voltage is loaded on the 2 pin (anode) of the first unidirectional silicon controlled rectifier SCR1 after passing through the resistor R1, the +1v voltage is loaded on the 2 pin (anode) of the power switch K1 after passing through the resistor R1, K1 is a power switch of the display, K1 is a touch button, when the user does not press the touch button K1, the 2 pin and the 1 pin of the touch switch K1 are disconnected, the 3 pin (trigger electrode) of the first unidirectional silicon controlled rectifier SCR1 is not triggered at this time, so that the 2 pin (anode) and the 1 pin (cathode) of the first unidirectional silicon controlled rectifier SCR1 are turned off, the switching device is not turned on, the switching control circuit does not supply power to the load module of the display according to the non-conduction control of the switching device, and the load module is not powered on the display.
When the power-on state is up: when the user lightly touches the key of the power switch K1, the pins 2 and 1 of the power switch K1 are connected. The +12V power supply is loaded to the 3 pins (trigger electrodes) of the first unidirectional silicon controlled rectifier SCR1 through R1, the 2 pin of the power switch K1, the 1 pin of the power switch K1, the positive electrode of the diode D1, the negative electrode of the diode D1. The 3-pin high potential of the first unidirectional silicon controlled rectifier SCR1 triggers the conduction of the 2-pin (anode) and the 1-pin (cathode) of the first unidirectional silicon controlled rectifier SCR1, so that high potential is generated, trigger conduction voltage is generated, the switching device is conducted, the switching control circuit supplies power to the display load module according to the conduction control of the switching device, the display load module supplies power to enable the display to be in a starting state, and therefore the +12V power supply supplies power to the display load module. The high voltage after the conduction of the 2 (anode) and 1 (cathode) pins of the first unidirectional silicon controlled rectifier SCR1 charges the capacitor C1 through the resistor R3 and the diode D2. Because the voltage at the two ends of the capacitor C1 cannot be suddenly changed, the 3 pin (trigger electrode) of the second unidirectional silicon controlled rectifier SCR2 is also low in potential, the 2 pin (anode) and the 3 pin (trigger electrode) of the second unidirectional silicon controlled rectifier SCR2 are also turned off and are not turned on, and the 2 pin and the 1 pin of the power switch K1 are turned off after the display is started.
When the power-on state is switched on to the power-off state: after the display works normally, the MCU module can read the timing shutdown time set by the user from the storage module. When the video input module of the display cannot detect the video input signal of the computer, the MCU module starts a timer. The time set by the timer is the time set by the user for timing shutdown. When the timing shutdown time is up, if the video signal input by the computer is not detected, the display main control MCU and the video processing module output a low potential at the GPIO 1 interface, the low potential is added to the b pole of the diode Q2 after passing through the resistor R10, then the c e pole of the diode Q2 is cut off, the c pole of the diode Q2 generates a high potential, the high potential is added to the b pole of the diode Q3 after passing through the resistor R11, and then the c e pole of the diode Q3 is saturated and conducted. The high potential at the positive end of the capacitor C1 provides trigger voltage for the second unidirectional silicon controlled rectifier SCR2 after passing through the resistor R2, then leads to the conduction of the 2 pin and the 1 pin of the second unidirectional silicon controlled rectifier SCR2, then makes the 2 pin of the first unidirectional silicon controlled rectifier SCR1 become low potential, and the 2 pin and the 1 pin of the first unidirectional silicon controlled rectifier SCR1 are cut off, and the low potential is cut off through the switching device, so that the power supply of the display is cut off, and the display enters a shutdown state. The power is saved more than standby state after the display is turned off, and GPIO ports of the display main control MCU and the video processing module imitate the action of turning off the user key.
Further, the switch control circuit comprises a MOS chip U1, a capacitor C4, a resistor R12, a resistor R6 and a resistor R7; the S pole of the MOS chip U1 is connected with the output end of the first filter circuit, the S pole of the MOS chip U1 is connected with one end of the capacitor C4, the other end of the capacitor C4 is connected with the G pole of the MOS chip U1, one end of the resistor R6 is connected with the output end of the switching device, the other end of the resistor R6 is connected with one end of the resistor R7, the other end of the resistor R7 is connected with the output end of the first filter circuit, one end of the resistor R12 is connected with a common connection point of the resistor R6 and the resistor R7, the other end of the resistor R12 is connected with the G pole of the MOS chip U1, and the D pole of the MOS chip U1 is connected with the second filter circuit. As shown in FIG. 3, U1 is a PMOS integrated circuit chip, pins 1,2 and 3 of the MOS chip U1 are commonly connected, pins 1,2 and 3 are all S poles, pin 4 of the MOS chip U1 is G pole, pins 5, 6, 7 and 8 of the MOS chip U1 are commonly connected, pins 5, 6, 7 and 8 are all D poles, when in an alternating current power-on state, pin 2 and pin 1 of the power switch K1 are disconnected, the switching device is not conducted, thus +12V power supply passes through a resistor R107 after passing through a first filter circuit, the resistor R12 is directly loaded to the G pole of the MOS chip U1, the G pole and the S pole of the MOS chip U1 are both high potential, the S pole and the D pole of the MOS chip U1 are cut off, and the display load module is not powered to enable the display to be in a power-off state; when the power is turned on, the pin 2 and the pin 1 of the power switch K1 are connected, one end of the resistor R6 and one end of the resistor R12 are enabled to generate low potential after the switching device is turned on, then the pole G of the MOS chip U1 is enabled to generate low potential, the pole G and the pole S of the MOS chip U1 are enabled to be turned on, and therefore a +12V power supply supplies power to the display load module; when the display is started to a power-off state, the switching device is not conducted, then the G pole of the MOS chip U1 is changed to be high potential, and then the S pole and the D pole of the MOS chip U1 are turned off, so that the power supply of the display load module is turned off, and the display is turned off.
Further, the switching device comprises a triode Q1, a first end of the triode Q1 is connected with an output end of the trigger circuit through a resistor R4, a first end of the triode Q1 is grounded after passing through a resistor R5, a second end of the triode Q1 is grounded, and a third end of the triode Q1 is connected with an input end of the switching control circuit. As shown in fig. 3, the first, second and third terminals of the triode Q1 are respectively a base b, an emitter e and a collector c, after the 2 pin and the 1 pin of the power switch K1 are turned on, the 3 pin high potential of the first unidirectional silicon controlled rectifier SCR1 triggers the 2 pin and the 1 pin of the first unidirectional silicon controlled rectifier SCR1 to be turned on, so that the high potential is loaded to the b pole of the triode Q1 after passing through the resistor R102, the b pole and the e pole of the triode Q1 are saturated and turned on, the c pole and the e pole of the triode Q1 are saturated and turned on, the switching device is turned on, the voltage flows to the switch control circuit, the power supply supplies power to the display load module, otherwise, after the display master control MCU and the GPIO port of the video processing module output low potential, the 2 pin and the 1 pin of the power switch K1 are turned on, then the 2 pin (anode) of the first unidirectional silicon controlled rectifier SCR1 becomes ground potential, the 2 pin and the 1 pin of the first unidirectional silicon controlled rectifier SCR1 is turned off, and the b pole of the triode Q1 becomes low potential after the 2 pin and1 is turned off. Then, the c pole and the e pole of the triode Q1 are turned off, the switching device is not turned on, the voltage does not flow to the switching control circuit, and the power supply does not supply power to the display load module.
Further, in order to filter, as much as possible, the ac component in the dc voltage is reduced, and the first filter circuit includes a capacitor C2 and a capacitor C3; one end of the capacitor C2 is connected with the output end of the AC-DC power supply module, and the other end of the capacitor C is grounded; one end of the capacitor C3 is connected with the output end of the AC-DC power supply module, and the other end of the capacitor C is grounded.
Further, in order to protect the circuit, the ac component in the dc voltage is reduced as much as possible, and the first filter circuit includes a capacitor C6 and a capacitor C5; one end of the capacitor C6 is connected with the output end of the switch control circuit, and the other end of the capacitor C is grounded; one end of the capacitor C5 is connected with the output end of the switch control circuit, and the other end of the capacitor C is grounded.
Further the invention provides a display, characterized in that: a display system comprising a post-standby timed shutdown as claimed in any preceding claim. The display comprises the display system which is shut down at regular time after standby, and the display is more energy-saving.
Further, the invention also provides a display control method for the timing shutdown after standby, which is characterized in that the display control system based on the timing shutdown after standby performs the following steps:
S1, reading timing shutdown time data set by a user from a memory module;
s2, the video input module detects whether video data is input, if so, the display enters a normal display mode, and if not, the display enters a standby mode and the next step is carried out;
s3, starting a MCU module timer for timing, wherein the timing shutdown time is set by a user;
s3, starting a MCU module timer for timing, wherein the timing shutdown time is set by a user;
s4, the MCU module detects whether the timing shutdown time is up, if so, the low potential is output, and the display is shut down through the timing shutdown driving module.
Further, in step S4, if the timed shutdown time is not reached, the video input module detects whether video data is input, and if so, the MCU module timer is turned off and the process goes to step S2.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A display control system for timed shutdown after standby, comprising:
the input end of the AC-DC power supply module is connected with the mains supply and is used for converting the alternating-current mains supply into direct current to supply power for the display;
the input end of the power switch module is connected with the output end of the AC-DC power module, and controls the on and off of direct current of the display;
The input end of the DC-DC module is connected with the output end of the power switch module;
The timing shutdown driving module is connected with the power switch module;
The display main control MCU and the video processing module comprise an OSD module, an MCU module and a video input module which are connected with the timing shutdown driving module;
The memory module, the display screen, the key input module and the external computer are connected with the display main control MCU and the video processing module;
The key input module is matched with the OSD module to set and modify the timing shutdown time data of the display, the timing shutdown time data is stored in the memory module, the MCU module can read the timing shutdown time set by a user from the memory module, when the video input module cannot detect the video input of an external computer, the display automatically enters a standby mode, the MCU module starts a timer, and when the timing shutdown time is reached, the display main control MCU and the video processing module close the power switch module through the timing shutdown driving module to cut off the power supply of the display;
The timing shutdown driving module comprises a triode Q2, a triode Q3, a resistor R8, a resistor R9, a resistor R10 and a resistor R11; the third end of the triode Q3 is connected with the second end of the power switch, the second end of the triode Q3 is connected with the first end of the power switch, the first end of the triode Q3 is connected with the third end of the triode Q2 after passing through a resistor R11, the second end of the triode Q2 is grounded, the third end of the triode Q2 is connected with a 3.3V power supply after passing through a resistor R9, the first end of the triode Q2 is connected with a 3.3V power supply after passing through a resistor R10 and a resistor R8 in sequence, and the first end of the triode Q2 is connected with a display main control MCU and a GPIO port of a video processing module after passing through the resistor R10.
2. The post-standby timed shutdown display control system of claim 1, wherein: the display power supply switch module comprises a first filter circuit, a power supply switch, a trigger circuit, a switch device, a switch control circuit and a second filter circuit; the input end of the first filter circuit is connected with the output end of the AC-DC power supply module, one end of the power switch is connected with the output end of the AC-DC power supply module, two ends of the power switch are contacted with two input ends of the power generation circuit, the input end of the switching device is connected with the output end of the trigger circuit, the output end of the switching device is connected with one input end of the switch control circuit, the output end of the first filter circuit is connected with the other input end of the switch control circuit, the input end of the second filter circuit is connected with the output end of the switch control circuit, and the output end of the second filter circuit is connected with the display load module.
3. The display control system for post-standby timed shutdown according to claim 2, wherein: the trigger circuit comprises a first unidirectional silicon controlled rectifier SCR1, a second unidirectional silicon controlled rectifier SCR2, a diode D1, a diode D2, a resistor R2, a resistor 3 and a capacitor C1; the anode of the first unidirectional silicon controlled rectifier SCR is connected with the second end of the power switch, the anode of the diode D1 is connected with the first end of the power switch, the cathode of the diode D1 is connected with the trigger electrode of the first unidirectional silicon controlled rectifier SCR1, the cathode resistor of the first unidirectional silicon controlled rectifier SCR1 is connected with the anode of the diode D2 through a resistor R3, the cathode of the first unidirectional silicon controlled rectifier SCR1 is connected with the input end of the switching device, the anode of the second unidirectional silicon controlled rectifier SCR2 is connected with the first end of the power switch, the trigger electrode of the second unidirectional silicon controlled rectifier SCR2 is connected with the cathode of the diode D2, the cathode of the second unidirectional silicon controlled rectifier SCR2 is grounded, the cathode of the diode D2 is connected with one end of the capacitor C1, and the other end of the capacitor C1 is grounded.
4. The display control system for post-standby timed shutdown according to claim 2, wherein: the switch control circuit comprises a MOS chip U1, a capacitor C4, a resistor R12, a resistor R6 and a resistor R7; the S pole of the MOS chip U1 is connected with the output end of the first filter circuit, the S pole of the MOS chip U1 is connected with one end of the capacitor C4, the other end of the capacitor C4 is connected with the G pole of the MOS chip U1, one end of the resistor R6 is connected with the output end of the switching device, the other end of the resistor R6 is connected with one end of the resistor R7, the other end of the resistor R7 is connected with the output end of the first filter circuit, one end of the resistor R12 is connected with a common connection point of the resistor R6 and the resistor R7, the other end of the resistor R12 is connected with the G pole of the MOS chip U1, and the D pole of the MOS chip U1 is connected with the second filter circuit.
5. The display control system for post-standby timed shutdown according to claim 4, wherein: the switching device comprises a triode Q1, wherein a first end of the triode Q1 is connected with an output end of the trigger circuit through a resistor R4, a first end of the triode Q1 is grounded after passing through a resistor R5, a second end of the triode Q1 is grounded, and a third end of the triode Q1 is connected with an input end of the switch control circuit.
6. The post-standby timed shutdown display control system of claim 5, wherein: the first filter circuit comprises a capacitor C2 and a capacitor C3; one end of the capacitor C2 is connected with the output end of the AC-DC power supply module, and the other end of the capacitor C is grounded; one end of the capacitor C3 is connected with the output end of the AC-DC power supply module, and the other end of the capacitor C is grounded.
7. The post-standby timed shutdown display control system of claim 5, wherein: the first filter circuit comprises a capacitor C6 and a capacitor C5; one end of the capacitor C6 is connected with the output end of the switch control circuit, and the other end of the capacitor C is grounded; one end of the capacitor C5 is connected with the output end of the switch control circuit, and the other end of the capacitor C is grounded.
8. A display control method of a post-standby timed shutdown, characterized by the following steps based on the display control system of a post-standby timed shutdown according to any one of claims 1-7:
S1, reading timing shutdown time data set by a user from a memory module;
s2, the video input module detects whether video data is input, if so, the display enters a normal display mode, and if not, the display enters a standby mode and the next step is carried out;
s3, starting a MCU module timer for timing, wherein the timing shutdown time is set by a user;
s4, the MCU module detects whether the timing shutdown time is up, if so, the low potential is output, and the display is shut down through the timing shutdown driving module.
9. The method according to claim 8, wherein in step S4, if the time of the timer shutdown is not reached, the video input module detects whether video data is input, and if the video data is input, the MCU module timer is turned off, and the process goes to step S2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110870337.8A CN113595376B (en) | 2021-07-30 | 2021-07-30 | Display control system and method for timing shutdown after standby |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110870337.8A CN113595376B (en) | 2021-07-30 | 2021-07-30 | Display control system and method for timing shutdown after standby |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113595376A CN113595376A (en) | 2021-11-02 |
| CN113595376B true CN113595376B (en) | 2024-07-26 |
Family
ID=78252449
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110870337.8A Active CN113595376B (en) | 2021-07-30 | 2021-07-30 | Display control system and method for timing shutdown after standby |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113595376B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116247907B (en) * | 2023-03-29 | 2025-07-18 | 北京翌光科技有限公司 | Power supply control circuit and photocosmetic device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN216016711U (en) * | 2021-07-30 | 2022-03-11 | 深圳市世纪创新显示电子有限公司 | Display control system capable of being turned off at fixed time after standby |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6462437B1 (en) * | 1999-11-12 | 2002-10-08 | Koninklijke Philips Electronics N.V. | System and method for alternating standby mode |
| CN101102441A (en) * | 2007-08-02 | 2008-01-09 | 康佳集团股份有限公司 | TV delay idle method |
| CN101782802A (en) * | 2009-01-20 | 2010-07-21 | 台达电子工业股份有限公司 | Standby power-saving system and computer power supply starting and disconnecting method thereof |
| DE202010015353U1 (en) * | 2010-11-11 | 2011-02-10 | Francotyp-Postalia Gmbh | On and off switchable supply unit |
| CN204465991U (en) * | 2015-03-26 | 2015-07-08 | 深圳市兴日生实业有限公司 | Digital Timing Dimmer for Aquarium Lighting |
| CN210111683U (en) * | 2019-07-04 | 2020-02-21 | 深圳市嘉利达专显科技有限公司 | Circuit for reducing standby power of medical display powered by external power supply |
| CN110727232B (en) * | 2019-11-15 | 2024-05-28 | 威海东兴电子有限公司 | Intelligent detection zero-power consumption multi-mode switching control circuit |
| CN112713753A (en) * | 2020-12-31 | 2021-04-27 | 深圳市世纪联合创新科技有限公司 | Circuit and method for reducing standby and shutdown power of display |
-
2021
- 2021-07-30 CN CN202110870337.8A patent/CN113595376B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN216016711U (en) * | 2021-07-30 | 2022-03-11 | 深圳市世纪创新显示电子有限公司 | Display control system capable of being turned off at fixed time after standby |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113595376A (en) | 2021-11-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102981425B (en) | Startup and shutdown circuit | |
| CN201589807U (en) | A voltage detection circuit of a reset circuit | |
| CN203643779U (en) | Outage wake-up circuit of ammeter metering terminal | |
| CN103138376A (en) | Power switching circuit and power switching method thereof | |
| CN104345660B (en) | It is remotely controlled start-up circuit | |
| CN103294147B (en) | The dynamo-electric road of a kind of software open and close and implementation method | |
| CN207801898U (en) | A kind of on/off circuit | |
| CN102508536B (en) | One-button startup and shutdown circuit in embedded system and control method thereof | |
| CN216016711U (en) | Display control system capable of being turned off at fixed time after standby | |
| CN112713753A (en) | Circuit and method for reducing standby and shutdown power of display | |
| CN106095040A (en) | A kind of key control circuit and electronic product | |
| CN201039316Y (en) | A reset circuit and TV set with above reset circuit | |
| CN113595376A (en) | Display control system and method for timing shutdown after standby | |
| CN204290714U (en) | Power control circuit and electrical equipment | |
| CN213585190U (en) | Power control circuit with standby low power consumption | |
| CN216249956U (en) | Circuit for reducing shutdown power of display and display | |
| CN212462838U (en) | Power supply switching circuit and intelligent door lock system | |
| CN105897240A (en) | Single-button soft on-off circuit with hardware forced power-off function | |
| CN211266757U (en) | Power isolation circuit and intelligent door lock system | |
| CN103197573A (en) | Discharge voltage regulator (DVR) power control device and DVR power control method | |
| CN220358809U (en) | Power failure detection device and electrical equipment | |
| CN104423278B (en) | Mobile power supply terminal and its method of supplying power to | |
| CN102890556B (en) | A kind of display terminal | |
| CN113359936B (en) | Power control method, power control circuit, device and household appliance | |
| CN214674448U (en) | Low standby power consumption power supply circuit and electronic equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |