645results about How to "Close in time" patented technology

The invention discloses a multi-network cooperative network optimization and energy saving method and system, and belongs to the field of mobile communications. The method comprises the following steps: computing neighbor cell overlapping coverage of network cells, screening out overlapping coverage neighbor cells of the network cells, and adding the network cells and the overlapping coverage neighbor cells of the network cells as energy saving cells into an energy saving cell list; and determining energy saving time periods of each day, computing predicted traffic of the cells in the list at a next energy saving time period according to history traffic of the energy saving time periods and traffic of a previous time period, determining dormant cells in the energy saving cell list according to the predicted traffic, determining compensation cells of the dormant cells in the energy saving cell list, shutting down the dormant cells, and transferring services on the dormant cells onto other compensation cells. The method and the system support cross-network and cross-equipment-manufacturer multi-network cooperative optimization and energy saving analysis. Compared with the conventional manual optimization, the method and the system have the advantages that a large amount of labor cost can be saved, and the network optimization and energy saving effects are enhanced greatly.

The invention discloses a domestic environment intelligent control system based on Zigbee networking. The system comprises a detection element for detecting indoor environmental parameters, a first Zigbee wireless communication module, a smart host, a second Zigbee wireless communication module and an intelligent household electrical appliance control switch. The smart host contains a control circuit and a Wifi wireless communication module. The detection element is in communication connection with the control circuit through the first Zigbee wireless communication module. The control circuit is in communication connection with the intelligent household electrical appliance control switch through the second Zigbee wireless communication module. The control circuit is in communication connection with a router through the Wifi wireless communication module. On one hand, the router is connected with an intelligent terminal through the Internet to realize telecommunication; and on the other hand, the router is connected with the intelligent terminal through a Wifi network to realize short-distance communication. According to the invention, the detection element is used to detect indoor environmental parameters, the control circuit is used to automatically regulate and control intelligent household electrical appliances according to the above parameters, and household electrical appliances can be turned off timely.

The invention relates to a method for constructing a double-arch tunnel by rebuilding and expanding an existing single-hole tunnel. The technical problem to be solved by the invention is to provide a method for constructing the double-arch tunnel by rebuilding and expanding the existing single-hole tunnel, which adopts a ' middle pilot hole, the existing tunnel and a right hole' three pilot pit construction scheme, enlarges construction face and reduce excavation face and surrounding rock disturbed zone. To solve the technical problem, the invention adopts a technical scheme that the method for constructing the double-arch tunnel by rebuilding and expanding the existing single-hole tunnel comprises the following steps: 1.1 constructing the middle pilot hole parallel to the existing single-hole tunnel on one side of the existing single-hole tunnel and completing supporting construction; 1.2, constructing a left hole by sequence and zone on the basis of the existing single-hole tunnel and communicating the left hole and the middle pilot hole; and 1.3, after excavating the left hole to a certain size, constructing the right hole by sequence and zone and communicating the right hole with the middle pilot hole. The method is mainly used in highway traffic engineering and municipal traffic engineering.

The invention discloses a process for recycling waste mineral oil without hazardous material emission. The process includes steps of 1, carrying out heating pyrolysis; 2, carrying out condensation and liquefaction and simultaneously recycling combustible gas; 3, carrying out conditioning; 4, storing finished products; 5, clearing coke residues, and to be more specific, clearing solid residual substances-coke residues obtained after clearing pyrolysis is carried out in reaction kettles; 6, gasifying the coke residues, to be more specific, crushing the coke residues cleared at the step 5 to obtain granules, then feeding the granules into a coke residue gasification furnace, gasifying the granules by the aid of the gasification furnace to obtain combustible gas, leading the combustible gas into a gas furnace used at the step 1 and combusting the combustible gas in the combustible furnace. The process has the advantages that certain waste gas and waste residues which are generated during pyrolysis on the waste mineral oil can be used as fuel to be fed into heating furnaces for the reaction kettles in closed-loop procedures, and accordingly the process is basically free of emission of toxic waste gas and toxic waste residues; all combustible substances in the waste mineral oil can be comprehensively sufficiently utilized, accordingly, environments can be protected, energy can be saved, and the process is favorable for society and people.

The invention relates to an automatic equipment identification (AEI) method and an AEI system. The AEI method includes the following steps: monitoring tag information carrying a train number and sent by a train radio frequency identification (RFID) tag, and starting a camera device to take an image of the area on a train where a train number is located; after positioning a character zone in the image and splitting the character zone from the image, identifying the train number in the character zone; comparing the identified train number and the train number sent by the RFID tag, sending data indicating the train number to an external preset address if the identified train number is identical to the train number sent by the RFID tag, and sending an alarm message if the identified train number is not identical to the train number sent by the RFID tag. The invention adopting the technical scheme has the advantages that the automatic image identification method and the RFID tag identification method are creatively combined, and the results from the two methods verify each other, so as to reduce wrong and omitted train number reading, and improve the AEI accuracy.

The embodiment of the invention discloses a method for turning off a terminal alarm clock. The method comprises the steps of detecting whether the use event of a terminal by a user exists currently; sending a notification message used for reminding the user to turn off the reminding function of the alarm clock within a preset time period if it is detected that the use event of the terminal by the user exists currently; turning off the reminding function, within the preset time period, of the alarm clock if an alarm clock turning-off instruction sent to respond to the notification message is received. The embodiment of the invention further discloses a device for turning off the terminal alarm clock and terminal equipment. By adopting the method and device for turning off the terminal alarm clock and the terminal equipment, the notification message related with setting of the alarm clock can be pushed to the user by detecting the use event of the terminal by the user so that the user can turn off the unneeded reminding function of the alarm clock in time by processing the notification message.

The invention discloses a flexible composite ceramic membrane with low temperature closed-cell performance and good dimensional stability and a preparation method and application thereof. The preparation method for the composite ceramic membrane comprises the following steps: preparing functional slurry from precursor compounds I and II by using an aqueous sol-gel method or non-aqueous sol-gel method, coating the functional slurry on a substrate membrane containing an active functional group and carrying out heating or irradiating the substrate membrane with ultraviolet light; and immersing the obtained composite membrane in ethanol to remove a pore forming agent and carrying out hot pressing and drying so as to obtain the flexible composite ceramic membrane. The substrate membrane used for the composite ceramic membrane is a polyolefin porous membrane; the polyolefin porous membrane in the prepared composite membrane has a low closure temperature, and pores of the polyolefin porous membrane can be timely and thoroughly closed when a battery is in an abnormal operational state, which enables safety of the battery to be ensured. According to the invention, a modified nanoparticle formed in the process of sol-gel can be connected with the polyolefin substrate membrane containing the active functional group without falling off, so stability of a coating is enhanced, and comprehensive electrochemical performances of the composite membrane are improved.

The invention discloses an intelligent socket system. The intelligent socket system comprises a master control socket and M slave sockets, wherein M is greater than or equal to 1; the master control socket comprises a first wireless communication module, a second wireless communication module and a processing module; each slave socket comprises a second wireless communication module and a processing module; when the first wireless communication module of the master control socket receives a first wireless control signal corresponding to one slave socket, sent by a terminal, the processing module of the master control socket controls the second wireless communication module of the master control socket to send a corresponding second wireless communication signal to the corresponding slave socket; when the second wireless communication module of the slave socket receives a second wireless communication control signal sent by the second wireless communication module of the master control socket, the processing module of the slave socket controls the slave socket to turn on or off. The intelligent socket system is capable of controlling the opening or closing of electric appliances conveniently and timely, saving energy, reducing consumption and closing accident sources timely.

The invention discloses a numerical control machine tool accessory production automation equipment data detection system based on the Internet of Things. The system comprises a camera, a data acquisition module, a Zigbee coordinator, a Zigbee intelligent gateway, a data analysis module, an energy consumption monitoring module, an energy consumption analysis module, a comparison module, a controller, a cloud platform, a big data reference module and an equipment management module. Through the camera and the data analysis module, the production equipment can be automatically identified by combining the Internet, then normal operation information required by the production equipment can be automatically obtained through the big data reference module, and then the operation information of theproduction equipment can be adjusted in time through the data acquisition module and the equipment management module. Based on the production equipment energy consumption monitoring data, the production equipment state is analyzed and diagnosed, and the energy consumption abnormity of the production equipment is identified and predicted.

The invention discloses an intelligent sample collecting device which comprises a machine frame. The machine frame is provided with a feed inlet. A rotatable rotating disc mechanism and multiple sample storage barrels used for collecting samples are arranged in a collecting cavity formed by the machine frame. The sample storage barrels are hung on the rotating disc mechanism. Each sample storage barrel is provided with a hinged barrel cover and an induction locking mechanism used for locking the barrel cover. The hinged position of the barrel cover is provided with an elastic part so that the barrel cover can bounce upwards to be opened when not locked. The feed inlet is provided with a liftable weighing mechanism. The weighing mechanism is provided with an induction unlocking assembly matched with the induction locking mechanism. When the rotating disc mechanism drives the sample storage barrels to rotate to the position below the feed inlet, the weighing mechanism raises to lift up the sample storage barrels, so that the induction locking mechanism induces an unlocking signal of the induction unlocking assembly to open the barrel covers for sample connection and weighing operation. The intelligent sample collecting device has the advantages that the structure is simple and compact, the intelligence degree is high, sample collection and transfer safety is high, sample collection quality precision is high, working efficiency is high, and the production cost is low.

A video buffer that updates and holds an inputted video signal by a unit of a frame image comprising: a image data holding unit (103) that consists of the first image data holding unit (103A) that holds the latest frame image, the second image data holding unit (103B) that hold the second frame image that goes back n pieces of frames in time from the first frame image and the third image data holding unit (103C) that hold the third frame image that goes back m pieces of frames in time from the first frame image; a moving picture display unit (105) that displays the latest frame image held in the first image data holding unit (103A); a print data selection unit (104) that selects a frame image stored in either of the first~the third image data holding units (103A~103C) as a print object; a print confirmation display unit (106) that displays the selected frame image; a print data generation unit (110) that converts the image data of the displayed image into print data and so forth.

The invention relates to the technical field of coal mining, in particular to a roof-cutting self-tunneling coal-pillar-free mining method for a coal seam easy to spontaneously combust. The method comprises the following steps of: additionally driving a constant-resistance anchor cable on a roof for reinforcing and supporting; conducting directional pre-splitting blasting joint cutting on the sideroadway roof of a goaf; erecting a single hydraulic prop in a temporary supporting area; arranging a gangue blocking support column close to the side of the goaf behind the stope face, and fixing a first metal net on one side, close to the goaf, of the gangue blocking support column; laying a flexible mold bag on the side, close to the goaf, of the first metal net, laying a second metal net on the side, close to the goaf, of the flexible mold bag, and synchronously laying the flexible mold bags forwards along with forward movement of a coal mining support of the working face; and pouring a quick-setting elastic material into the flexible mold bags. A pre-splitting joint-cutting technology is matched with a constant-resistance anchor cable support to weaken stress transfer of the roof andimprove the dynamic pressure resistance of the roadway; and the quick-setting elastic material capable of generating large deformation is combined with the gangue blocking structure, so that the goodsealing effect of the goaf is ensured while yielding deformation is realized.

The invention discloses a multifunctional rock tunnel boring machine support system and method. The support system comprises a shield, a steel arch mounting machine, a front-mounted mixed spraying machine, a segment mounting machine and a roof bolt driller. The shield is disposed between the front part of a main beam of the boring machine and a cutter head, and the steel arch mounting machine, the front-mounted mixed spraying machine, the segment mounting machine and the roof bolt driller are sequentially and slidably disposed on a main beam on the rear side of the shield; the steel arch mounting machine and the front-mounted mixed spraying machine are disposed in an adjacent mode; and a segment feeding machine is arranged below the roof bolt driller, and the segment feeding machine is connected with the boring machine through a traction mechanism. The multifunctional rock tunnel boring machine support system and method integrate various supporting methods, can realize the combined use of various supporting methods, enhance the adaptability of a open type TBM to the weak broken stratum, can realize the timely sealing of the surrounding rock, and improve the driving efficiency and the supporting strength.

The invention relates to a refrigerator and a control method thereof. The refrigerator is provided with a switch, a temperature sensor, an indicator light and a controller, wherein the switch is linked with the action of a door of the refrigerator; the temperature sensor is used for detecting the actual temperature inside the refrigerator; and the controller is provided with determined temperature and controls the shining state of the indicator according to the signals coming from the switch and the temperature sensor. When the door of the refrigerator is opened and the actual temperature is higher than the determined temperature, the controller changes the shining state of the indicator light so that a user can know the change of the actual temperature inside the refrigerator and is urged to close the door of the refrigerator in time so as to achieve the aim of reducing energy consumption.

The invention discloses an indoor air monitoring and purifying intelligent control system. The system comprises a control host, multiple monitors and at least one air purifier. At least one monitor is arranged at the positions away from air inlets and air outlets of the air purifiers. The monitors are used for detecting air pollution indexes and wirelessly transmitting the air pollution indexes to the control host, and the control host controls the air purifiers to start purifying work modes of corresponding grades according to the air pollution indexes. The invention further discloses an air monitoring and purifying method. The system and the method have the beneficial effects that the indoor air state can be truly shown, and therefore the air purifiers can be started or adjusted or stopped in time.

The invention relates to a wireless mobile device and a wireless network connection method thereof, which is used for switching a wireless local area network (WLAN) to a wireless wide area network (WWAN). In addition to a central processing unit and other functional modules, the wireless mobile device also comprises a first communication module, a first power source, a second communication module and a second power source, wherein the first power source and the second power source are respectively controlled by the central processing unit to supply power to the first communication module and the second communication module; a first communication interface of the central processing unit is connected to the first communication module and a second communication interface thereof is connected to the second communication module; the central processing unit detects whether the WLAN is available through the first communication module and is connected to the WLAN through the first communication module when the WLAN is available and is accordingly connected to the internet; and the central processing unit is connected to the WWAN through the second communication module when the WLAN is not available. The invention has the advantages of energy saving and capability of automatically switching wireless network modes.

The invention discloses a wet-and-dry dual-purpose floor brush for a vacuum cleaner. The wet-and-dry dual-purpose floor brush comprises a floor brush body the bottom of which is provided with at leastone dust suction port and a wet-type floor mopping device, and the wet-type floor mopping device comprises a bottom plate used for installing a mopping cloth and a liquid supply tank which is locatedat the upper side of the bottom plate and used for supplying clean liquid to the mopping cloth; several liquid outlet holes are formed in the bottom plate, an air inlet communicated with the outsideis formed in the liquid supply tank, the bottom of the liquid supply tank is provided with a liquid outlet which is in fluid communication with the liquid outlet holes, the liquid outlet is provided with a valve for opening and closing the liquid outlet, an action part capable of being operated by a user is arranged outside the liquid supply tank, and the user can operate actions of the action part to open or close the liquid outlet through transmission arrangement of the action part and the valve. In this way, the user can timely close the liquid outlet of the liquid supply tank after finishing using the floor mop, so that the liquid is prevented from continuing to flow towards the ground.

The invention provides a method and a device for controlling human face detection functions, and relates to the technical field of intelligent control. The method includes acquiring images when the fact that cameras and the human face detection functions of the cameras are in enabled states is monitored; judging the enabling validity of the human face detection functions according to the acquired images; disabling the human face detection functions if the enabled human face detection functions are invalid. The method and the device for controlling the human face detection functions in an embodiment of the invention have the advantages that the validity of the human face detection functions can be judged according to the acquired images, the human face detection functions can be disabled if the fact that the enabled human face detection functions are invalid is judged, accordingly, the human face detection functions can be intelligently controlled, the running time of the human face detection functions and corresponding hardware can be shortened, power consumption can be reduced, the service life of equipment can be prolonged, and the experience can be improved for users.

The invention relates to the technical field of building doors and windows, and discloses a building window capable of being closed automatically in severe weather. The building window comprises a window frame, a mobile window is arranged on the window frame, a sliding rail is fixedly installed on the upper part of the window frame, an air bag is fixedly installed on the left part of an inner cavity of the sliding rail, an air pipe is arranged between the air bag and a pushing block, an installation block is arranged on the left part of the front of the window frame, a cam is rotatably connected to the front of the installation block, a rotary disc is rotatably connected to the front of the cam, and a fan is rotatably connected to the front of the rotary disc. According to the building window capable of being closed automatically in the severe weather, a spring rod is arranged in the rotary disc, the fan can drive the cam to rotate during strong wind, so that the cam extrudes an arc block, an ejector rod is driven to extrude the air bag, the air bag can inflates the air pipe, so that the air pipe is expanded to push the mobile window to be closed, and by cooperating with a slidingbarrel and other parts, the effects of preventing the window from being closed by mistake during breeze, being closed automatically at time in the strong wind environment and being closed at time during rainwater falling into the window frame are achieved.

The invention discloses an illuminating lamp control method and system, and the method comprises the steps that a camera obtains a plane image of a target region, wherein the plane image comprises a plurality of target main bodies; the camera processes the plane image to obtain a first image of the target area and sends the first image to a cloud server, wherein the first image comprises contour information of a plurality of target main bodies; the cloud server segments the first image to obtain a plurality of segmented images; the cloud server respectively inputs the plurality of segmented images into an identification model so as to obtain a plurality of identification results, and each identification result in the plurality of identification results is in a manned state or an unmanned state; and the cloud server controls the illumination state of the illumination lamp in the target area according to the plurality of identification results. By implementing the embodiment of the invention, the partition control of the office area lighting equipment can be realized, the electric energy is saved, and meanwhile, the privacy information of employees is prevented from being leaked.

The invention discloses a wireless communication network-based factory smart energy-saving system. The system includes a main controller, a smart phone, a sub controller, a GSM short message module, an NRF transmission module, a WiFi connection module, a video monitoring module and a PC client, and a sensor used for detecting various kinds of indicator environments of a factory, wherein the smart phone client can not only perform remote control on the total switch and three major energy consumption systems of the factory through short messages, but also can obtain the power consumption, temperature and illumination intensity information of the factory constantly, and store the power consumption, temperature and illumination intensity information in a mobile phone and the PC client, so that an analysis chart can be generated, and therefore, users can be facilitated to perform data analysis, and managers can be assisted to find and implement energy-saving and emission-reduction methods. With the system adopted, smart management can be effectively performed on the energy consumption of the factory. The system has the advantages of being economical, energy-saving property, convenience and high efficiency.

The invention discloses a stability control construction method of a water-enriched soft rock tunnel passing through a fault crushed zone. A plurality of tunnel segments in a construction tunnel are constructed respectively from back to front. During construction of any one of the tunnel segments, the method comprises the following steps: 1, performing pipe shed forepoling; 2, performing tunnel excavation and preliminary bracing: performing upper peripheral side cavity excavation and preliminary bracing, performing a reserved core soil area cavity excavation and preliminary bracing, excavatingthe cavity which is excavated firstly and performing preliminary bracing as well as excavating the cavity which is excavated secondly and performing preliminary bracing; and 3, performing tunnel secondary lining construction. The method is reasonable in design, simple and convenient in construction and good in use effect; before excavation, the upper cavity is subjected to forepoling by a self-drilling pipe shed and is excavated by a two-step method, so that the excavation efficiency is effectively improved; and meanwhile, an integral supporting system with a stable structure, which is formedby connecting a surrounding rock integral reinforced structure outside the cavity and a tunnel preliminary bracing structure and tunnel secondary lining, can effectively improve the stability of thetunnel structure and guarantee the later safety of the tunnel structure.

The invention provides a bone hole sealing instrument, which comprises a sleeve, a sealing bolt and a sealing bolt propeller, wherein the sealing bolt propeller is used for propelling the sealing bolt in the sleeve. The invention also provides a bone tissue puncture tool, which comprises a bone puncture needle, a sampling tube and the bone hole sealing instrument, wherein the bone puncture needle passes through the sleeve. The bone hole sealing instrument has the advantage that the sealing bolt can be enabled to be pushed into a bone hole from the sleeve in a single direction and is embedded into the bone hole. The bone tissue puncture tool has the advantages that after the sampling completion, the bone hole is sealed in time through the sealing bolt before the sleeve is taken down, and in the whole operation process, interstitial fluid in the bone hole cannot be outwards permeated, so the risk of malignant tumor transfer is avoided.

The invention discloses a magnetic adjustment type upper suspension window which comprises a window frame fixedly connected to a wall. Sliding grooves are formed in the opposite sides of the window frame correspondingly; sliding blocks are slidably connected into the sliding grooves; a window rack is mounted on the inner side of the window frame through wind braces; sliding parts of the wind braces are slidably connected with the sliding grooves through the sliding blocks; the sliding blocks are fixedly connected to the inner bottoms of the sliding grooves through first tensile springs; a ventilation cavity is formed in the side wall of the lower end of the window rack in the horizontal direction in a penetrating mode; and axial flow blades are mounted at the two ends of the ventilation cavity correspondingly, and the two axial flow blades rotate synchronously through a connecting shaft. By arranging the axial flow blades, the connecting shaft, a strip-shaped plate, a magnetic slidingblock, a magnetic sliding plug and a traction rope, the window can be automatically closed to be slightly open during wind blowing outside the window, and thus damage to indoor object due to the windis reduced; and by arranging a movable block and a bell cover, when the wind outside the window is too large, people in a room are reminded to close the window, and thus the safety performance of thewindow is improved.

The invention discloses a mining liquid carbon dioxide delivery device, which comprises a pipeline device, the pipeline device includes an outer tube and an inner tube, one end of the outer tube is connected with a first gaseous carbon dioxide storage tank, and one end of the inner tube is connected with a second gaseous carbon dioxide storage tank and The liquid carbon dioxide storage tank is connected, one end of the inner pipe is provided with a pressure stabilizing valve, and the other end of the inner pipe is provided with a pressure control valve, and the conveying device also includes a monitoring system. The delivery device can improve the reliability of delivery of liquid carbon dioxide and avoid safety accidents. The invention also discloses a leakage monitoring method of a mine-used liquid carbon dioxide delivery device. The monitoring method uses two pressure transmitters to monitor the pressure change inside the outer pipe. When the inner pipe leaks, both pressure transmitters will monitor When the abnormal signal of pressure increase is detected, the controller obtains the above abnormal signal, and calculates the specific location of the leakage point according to the time of obtaining the above abnormal signal. This monitoring method is simple, convenient and effective.

The invention provides a method for shutting down an air conditioner automatically. The method for shutting down the air conditioner automatically includes the steps that, a real-time position of a user is positioned through a cell phone, then a relative distance between the user and the air conditioner is calculated so as to judge whether the user exceeds a certain range or not, and then the air conditioner is shut down. The user carries the cell phone commonly when going out, so that the real-time position of the user is positioned through the cell phone, only if the relative distance between the real-time position of the user and the air conditioner exceeds a user preset value, the air conditioner begins shutdown timing, when timing exceeds a preset value, the air conditioner executes the shut down action, the method for shutting down the air conditioner automatically is convenient and rapid, can effectively ensure that the air conditioner is shut down timely after the user leaves a dwelling, can save energy and avoid happening of safety accidents.

The invention discloses a method for excavating an upper-soft lower-hard formation small-section tunnel underneath an urban main road, and the method is mainly applied to excavation construction for the small-section tunnel underneath the urban main road under a complex formation condition. Since geological conditions for tunnel construction are poor and settlement of a ground level road must be strictly controlled, the face of the tunnel is divided into five sections for sequential and alternate excavation from soft to hard and from top to bottom according to the rock and soil distribution situation of the excavated face of the tunnel in the tunnel excavation construction process; along with the reduction of the to-be-excavated face during excavation, drilling footage can be effectively controlled, and disturbance to the original formation around the tunnel is reduced accordingly; and after excavation is completed, sealing and supporting can be conducted quickly, the exposure duration of the excavated face is shortened to the maximum extent, and therefore, construction safety is guaranteed.

The invention relates to a fire-proof emergency device for a transmission line. The fire-proof emergency device is characterized by comprising a sliding guide track, an automatic telescopic mechanism is arranged on the sliding guide track, and the sliding guide track is movably connected with an outdoor guide track through the automatic telescopic mechanism. During use, when an indoor monitoring probe detects fire alarm (smoke or flame), a program for closing a fire-proof door can be started automatically, and the fire-proof emergency device is responded simultaneously. A driving device is started through a sensing device, a telescopic guide track portion of the sliding guide track is controlled to be retracted, a space for closing the fire-proof door is reserved, an indoor guide track and the outdoor guide track are separated, and the fire-proof door is closed smoothly. The door can be closed timely, and the transmission line is prevented from being damaged.

The invention discloses a screen control realization method and a terminal. The method comprises the steps of judging whether a user views the terminal or not when the terminal does not receive a touch screen signal or a key signal in a preset duration in a screen turn-on state of the terminal; and controlling turn-on and turn-off of a screen according to a result whether the user views the terminal or not. According to the method and the terminal, whether the user views the terminal or not is judged through a screen front-end image acquired when the touch screen signal or the key signal is not received in the preset duration, and the control on turn-on and turn-off of the screen is carried out, so that the terminal screen can be turned off in time when the user does not view the terminal, and the power consumption of the terminal is reduced.