91results about How to "To achieve mutual switching" patented technology

The embodiment of the invention relates to the technical field of human-computer interaction, and discloses an interactive learning method and device in a video playing process, and terminal equipment. The method comprises the following steps of: detecting a first interactive switching instruction in a process of outputting a video in an operation interface of a video learning application, wherein the first interactive switching instruction is used for indicating switching of interface contents output by the operation interface; determining knowledge point information corresponding to the video and obtaining test question information corresponding to the knowledge point information according to the first interactive switching instruction, pausing video output in the operation interface and outputting the test question information for users to respond in the operation interface, detecting a second interactive switching instruction in a process of outputting the test question information in the operation interface, wherein the second interactive switching instruction is used for indicating switching of interface contents output by the operation interface, and continuously outputting the video in the operation interface according to the second interactive switching instruction. By means of the embodiment of the invention, the learning effect and the learning initiative of users can be improved.

The disclosed method is applicable to soft switching system composed of switchboard, cipher key distribution center, controller of base station, public telephone switching network, and encrypted gateway when a call is built for both calling party and called party, and normal communication is carried out. The method also includes following steps: receiving switching request, switchboard determines current communication mode; if the current mode is plain mode, then switchboard at the party, who initiates switching request, applies to cipher key distribution center for cipher key, and switches plain mode to cipher mode; if the current mode is cipher mode, then switchboard at the party, who initiates switching request, sends message for closing cipher mode to another party, and switches current mode to plain mode, and closes cue tone. Plain mode and cipher mode can be switched by initiating switching request by calling party without interrupting normal communication in the invention.

The invention discloses a video playing unsmoothness switching method and system. The method comprises, when playing unsmoothness of a video file occurs on a terminal, obtaining the downloading code stream value of the video file, wherein the downloading code stream value is the code stream value of the video file during the downloading process from a server; instructing the server side to adjust the downloading code stream value of the video file step by step to be smaller than the obtained downloading code stream value of the video file; downloading the video file according to the adjusted downloading code stream value and meanwhile determining whether the playing unsmoothness of the video file on the terminal is eliminated; if so, instructing the server side to stop the step-by-step adjustment and downloading the video file according to the downloading code stream value corresponding the elimination of the playing unsmoothness. The video playing unsmoothness switching method and system can achieve downloading code stream switching when the playing unsmoothness occurs, thereby solving the problem of playing unsmoothness of videos due to code streams of the videos.

The invention discloses a double-motor hybrid driving and speed changing device, which is characterized in that: an internal-combustion engine takes a solid rotating shaft as an output shaft; a front section of the solid rotating shaft is coaxially provided with a sleeve shaft; a first clutch device and a second clutch device are arranged on the solid rotating shaft; a rotor of a second motor is fixed on the sleeve shaft; a rotor of a first motor is fixed on the solid rotating shaft; and a first gear is fixedly connected to the sleeve shaft, wherein the first clutch device, the first motor, the second motor, the second clutch device, and a change gear set consisting of the first gear, a second gear and a transmission gear are respectively arranged in respectively independent cavities. Thedouble-motor hybrid driving and speed changing device can be converted in a plurality of working modes, can effectively prevent the influence of heat transfer and splashing of lubricating oil on the motors, ensures the stable working state of the motors, has compact structure and reasonable layout, and improves fuel economy of the complete vehicle.

The invention discloses a prostate puncturing mechanism applied to an inner part of a magnetic resonance imaging machine and a working method. The mechanism comprises an outer needle rotation unit, an inner needle feeding unit and an anti-friction unit, wherein when a prostate puncturing needle is a rigid needle, friction resistance in a puncturing process can be reduced through high-frequency vibration of the anti-friction unit; and when the prostate puncturing needle is a flexible needle, rotation of the flexible needle can be controlled through the outer needle rotation unit, so that guidance and obstacle avoidance are realized. According to the prostate puncturing mechanism disclosed by the invention, by adopting a nonmagnetic or weak-magnetic material such as resin and aluminum alloys, and the prostate puncturing mechanism is not affected by a magnetic field, has a less influence on image quality and has good nuclear magnetic compatibility; and meanwhile, by adopting direct driving of nonmagnetic ultrasonic motors of a variety of forms, motion conversion mechanism is eliminated, and therefore, the prostate puncturing mechanism has the characteristics of being compact in structure, high in displacement controlling property and high in response speed.

The invention discloses a supercritical water oxidation treatment system of high-salt content corrosive organic wastewater. Through the arrangement of an evaporating wall-type reactor, a reflowing tank-type reactor and corresponding shut-off valves, the evaporating wall-type reactor or the reflowing tank-type reactor can be flexibly selected for working, thus effectively solving blockage problems caused by corrosion and salt deposition during the treatment of the high-salt content corrosive organic wastewater; additionally, through the arrangement of a clear water tank, a first high-pressure clear water pump, a second high-pressure clear water pump, a first pressurizer, a second pressurizer, an oxygen bottle and a nitrogen bottle, continuous supply and flow regulation of oxygen required by the supercritical water oxidation treatment system can be achieved; compared with a high-pressure compressor, the supercritical water oxidation treatment system of the high-salt content corrosive organic wastewater is low in equipment investment and low in working cost, and can be widely applied to a harmless treatment process of the high-salt content corrosive organic wastewater.

The invention discloses an information processing method and an electronic device. The electronic device is provided with a display unit. The information processing method comprises displaying a first interface which is corresponding to a first function on the display unit, wherein the first interface comprises a first virtual keyboard; detecting whether first operation which is used for operating the first virtual keyboard exists or not; judging whether the first operation satisfies a preset condition when the first operation detects existing; displaying a second interface which is corresponding to a second function on the display unit when the first operation satisfies the preset condition, wherein the second interface comprises a second virtual keyboard and the first function is different from the second function.

The invention discloses vehicle-mounted multimedia double-picture display system and method based on an FPGA (Field Programmable Gate Array). The display system comprises an integral display system based on the FPGA, GPS processing modules 1 and 2, video equipment, an LCD screen and a central processor, wherein the integral display system based on the FPGA comprises the field programmable gate array (FPGA) and a synchronous dynamic random access memory (SDRAM) of the display system. The display method comprises the following steps of: inputting GPS navigation / video signals; zooming in the horizontal direction; controlling the SDRAM; temporarily storing intermediate data by using the SDRAM; zooming in the vertical direction; outputting display data by using an LCD controller; and displaying on the LCD screen. The invention realizes the mutual switching among different GPS navigation systems and double GPS navigation display or same-screen display of any GPS navigation and video entertainment programs. The vehicle-mounted multimedia double-picture display system and method based on the FPGA in the invention are applied to automobiles.

Discloses is a system for switching between a PSTN call and a VOIP call. The system comprises a local phone, local customer premises equipment, remote customer premises equipment, and a remote phone, wherein the local phone is provided with a switching button and the switching button corresponds to a switching signal. A PSTN number and a VOIP number of the remote phone are stored in the remote customer premises equipment. The local customer premises equipment comprises a first control module which is used for judging a network which is in call is a PSTN network or a VOIP network after the local customer premises equipment receives the switching signal and sending a request for switching to a network which is not currently in call to the remote customer premises equipment. The remote customer premises equipment sends a number of the network which is not currently in call of the remote phone to the local customer premises equipment in order to establish a connection with the network which is not currently in call. The invention further relates to a method for switching between the PSTN call and the VOIP call.

The invention discloses a smoke recycling pulverized coal boiler combustion system and a working condition switching method thereof, and belongs to the fields of adjusting and control methods of oxygen-enriched combustion of a pulverized coal boiler. The smoke recycling pulverized coal boiler combustion system and the working condition switching method thereof solve the adjusting problem of the pulverized coal boiler in the switching process from an air combustion working condition to an oxygen-enriched combustion working condition. The smoke recycling pulverized coal boiler combustion system comprises a coal feeding machine, a burner, a boiler, a denitrator, an air pre-heater, an ash handling equipment, a desulfurizer and an induced draft fan. The working condition switching method of the smoke recycling pulverized coal boiler combustion system comprises the steps of arranging detection equipment, controlling recycling valves and an inlet valve, controlling the outlet flow of an air feeder and controlling oxygen injection amount. According to the smoke recycling pulverized coal boiler combustion system and the working condition switching method thereof, the changing parameters of the working condition switching process are obtained from related detection points in the combustion system, a circulation factor is determined through recycling smoke amount, oxygen injection flow of primary wind and secondary wind is determined through the oxygen amount of the outlet of a hearth, fluctuations of the circulation smoke amount, the air flow and the oxygen injection amount are maintained in a reasonable range in the switching process, switching from the air combustion working condition to the oxygen-enriched combustion working condition is achieved safely and stably, and the concentration of CO2 in the smoke is maintained.

The invention discloses a projection system, comprising a projector, a first screen and a second screen, wherein the first screen comprises a plurality of first regions and a plurality of second regions; image light beams are projected to the first screen by the projector; the image light beams which penetrate through the first regions can penetrate through the second screen to enter into the right eye of an observer at a pre-set position, but cannot penetrate through the second screen to enter into the left eye of the observer; the image light beams which penetrate through the second regions can penetrate through the second screen to enter into the left eye of the observer, but cannot penetrate through the second screen to enter into the right eye of the observer. Therefore, the projection display of three-dimensional images is realized and the observer can see the three-dimensional images by naked eyes.

The invention discloses a switching method for a neutral point grounding mode. Controllable impedance is arranged between a neutral point of a power grid and ground and is switched to different resistances during normal running of the power grid and in a single-phase grounding fault. The switching method comprises the steps of arranging that the neutral point is not connected with ground during normal running, and switching to the situation that a neutral point arc elimination coil is connected with the ground or a high-value resistor is connected with the ground when the single-phase grounding fault occurs; and switching to the situation that the neutral point is not connected with the ground if the fault disappears within set time, switching to the situation that a medium-value resistorof the neutral point is connected with the ground if the fault does not disappear, and switching to the running mode that the neutral point is not connected with the ground after the single-phase grounding fault is eliminated. The advantages of various grounding modes are compatible, and the high power supply reliability of a power grid is improved.

The invention discloses a coal-fired flue gas mercury homogeneous / heterogeneous reaction form transformation mechanism device and a method for detecting the form of mercury by using the same. The device comprises a feeding device, a cooling device, a dust removal filter and a detecting device, wherein the feeding device comprises a burning device of a drop tube furnace; the cooling device comprises a flue gas water-cooled tube, the flue gas water-cooled tube comprises a quartz tube core and a water-cooled tube which is wrapped outside the quartz tube core and provided with a water inlet and a water outlet, and the upper end of the flue gas water-cooled tube is connected with a lower outlet of the drop tube furnace; the upper end of the dust removal filter is connected with the lower outlet of the flue gas water-cooled tube; the detecting device comprises a temperature detector, a flue gas component detector and a mercury form detector. The device and method disclosed by the invention have the advantages that the influence of fly ash on the form of Hg in the process of sampling can be reduced or avoided, and the mutual switching between homogeneous heterogeneous researches under same experiment setting conditions is realized, thereby facilitating the implementation of comparison experiments, and facilitating the more clear understanding of the effect of particulate matters such as fly ash and the like in the heterogeneous process during Hg oxidation.

The invention relates to the food processing related field, in particular to a double-specification moon cake mould. The double-specification moon cake mould comprises an assembling frame, a forming and extruding mechanism, a moon cake fetching mechanism, a moon cake displacement mechanism and a mould regulation mechanism, wherein the forming and extruding mechanism is fixedly installed on the assembling frame; the moon cake fetching mechanism is in sliding installation in a groove arranged on the assembling frame; the moon cake fetching mechanism and the moon cake displacement mechanism are meshed; the moon cake displacement mechanism is fixedly installed on the assembling frame; and the mould regulation mechanism is fixedly installed on the assembling frame. By use of the device disclosed by the invention, mutual conversion of a large moon cake module and a small moon cake mould can be realized, production construction cost is saved, and the device is provided with a fixture mechanism so as to realize a function of stably clamping moon cakes of two sizes.

The invention provides a display control method and device of a naked eye 3D display terminal and a display terminal, which can realize the switch between the horizontal screen 3D display and the longitudinal screen 3D display, so that the display terminal can keep the 3D display in the longitudinal screen state and the horizontal screen state. The display control method of the naked eye 3D display terminal comprises the following steps: confirming the current screen display direction of the naked eye 3D display terminal; obtaining first stereoscopic display parameters corresponding to a firstdirection when the display direction of the screen is the first direction; performing the first direction stereoscopic display according to the first stereoscopic display parameters; obtaining secondstereoscopic display parameters corresponding to a second direction when the display direction of the screen is changed from the first direction to the second direction; and performing the second direction stereoscopic display according to the second stereoscopic display parameters; wherein the first direction is one of the directions of the horizontal screen and the longitudinal screen, and thesecond direction is the other direction of the horizontal and the longitudinal screen. The invention realizes the mutual switching between the 3D display of the horizontal screen and the 3D display ofthe longitudinal screen.

The invention discloses a master-slave ear switching method and device of a TWS earphone in a call scene, and a medium. The method comprises the steps: in a wearing state, acquiring signals representing that the positions of the main ear and the slave ear change relative to the respective wearing parts, and when the signals meet the switching condition of the main ear and the slave ear, switchingthe current main ear into the slave ear mode, and switching the current slave ear into the main ear mode. Therefore, according to the technical scheme, when the master ear and the slave ear of the TWSearphone are worn on two users, the two users can enable the generated signals to meet the master-slave ear switching condition through a specific operation mode, thereby achieving the mutual switching between the master ear and the slave ear, enabling the two users to receive the voice of the loudspeaker at the same time, enabling the two users to speak in turn, truly achieving the multi-persontelephone conference, and improving the user experience.

The invention discloses an open-boundary wide-band circularly polarized Vivaldi antenna, comprising a metal floor, two feeding structures and four antenna units, wherein the four antenna units are centrally symmetrically arranged on the top surface of the metal floor about the center of the metal floor, the two feeding structures are arranged on the metal floor, the two feeding structures are orthogonal through a bridge, and each feeding structure is connected with two opposing antenna units. The antenna unit adopts a metal radiating sheet, the inner side walls of the four metal radiating sheets face the central axis of the metal floor, the spacing between the inner side walls of the two metal radiating sheets opposed to each other is gradually opened upward in an exponential shape, and abalun is arranged at the root toward the outer side wall, and the balun adopts a knife-like structure. The invention adopts a metal structure and is more reliable; By switching 90 degrees of phase shift leading or lagging, the left-handed circular polarization port and the right-handed circular polarization port can be switched mutually; Phase center stabilization.

The invention relates to a photovoltaic micro-energy acquisition system and a hybrid energy storage automatic charging and discharging control method thereof. The photovoltaic micro-energy acquisitionsystem comprises a photovoltaic battery, a light energy acquisition controller and an energy storage module used for supplying power to a load; the energy storage module comprises a rechargeable battery, a super capacitor and a super capacitor charger; the energy storage module further comprises a first output detection unit, a second output detection unit and a third output detection unit. The first output detection unit judges whether output power exists on the super capacitor or not; the first output detection unit controls the photovoltaic battery to charge the rechargeable battery when the output power exists on the super capacitor. The second output detection unit whether output power exists on the super capacitor or not; the second output detection unit controls the photovoltaic battery to charge the super capacitor when the output power does not exist on the super capacitor. The third output detection unit judges whether output power exists on the super capacitor or not; and the third output detection unit controls the rechargeable battery to supply power to the load when the output power does not exist on the super capacitor. With the photovoltaic micro-energy acquisitionsystem and the hybrid energy storage automatic charging and discharging control method thereof of the invention adopted, electric energy waste caused by the self-discharge of the super capacitor canbe decreased.

The invention provides a heterogeneous multi-vehicle cooperative control method based on a multi-source information topology communication system. The system comprises a central server, a vehicle-mounted state monitoring system and a power management control system. The method comprises the steps of setting a communication neighborhood range and a time headway parameter of a vehicle queue by using the central server, and constructing a cooperative controller of a single feedforward signal according to a vehicle number and state information; on the basis, expanding a cooperative controller of a single feed-forward signal into a multi-source feed-forward information controller under communication delay; coupling the cooperative controller into a state space closed-loop control model of the single vehicle; constructing an extended state space model of the single-vehicle closed-loop control model under communication delay; and finally, constructing a closed-loop control state space model coupled in multiple vehicles, and synchronously calculating expected state information of all vehicles in real time. According to the method, cooperative control of the heterogeneous vehicle queue in the communication delay environment is realized through the V2V, and the stability is considered while the safety is ensured.

The invention discloses a general method and a general system for subscribing electronic newspapers based on a webpage, which are applied in the technical field of networks. The method comprises the following steps of: authenticating a received authority limit of subscription information transmitted by a user by using a communication server; and after the authentication is passed, storing the subscription information into a database of the communication server. By the method and the system, different newspapers can be mutually switched and authentication control can be performed on the subscription information under the condition that pages are not skipped.

The invention is applicable to the field of networks and provides a three-network combination system and a digital home terminal. The three-network combination system comprises a duplexer, a set top box module, an Ethernet over coax (EOC) module and a voice over Internet protocol (VOIP) module, wherein the duplexer is used for dividing a coaxial signal into a television (TV) signal and a DATA signal at the downlink and combining the DATA signal into the coaxial signal at the uplink, the set top box module is used for converting the TV signal into an audio and video analog signal at the downlink, the Ethernet over coax (EOC) module which is used for converting the DATA signal into an Ethernet signal at the downlink and converting the Ethernet signal into the DATA signal at the uplink, and communicates with the set top box module through an MME protocol, and the voice over Internet protocol (VOIP) module for converting the Ethernet signal into an audio and video data signal at the downlink and converting the audio and video data signal into the Ethernet signal at the uplink. The audio and video analog signal, the Ethernet signal and the audio and video data signal can be switched with one another through the duplexer, the set top box module, the EOC module and the VOIP module, so that three networks are combined together; furthermore, the three-network combination system is convenient to use; and the resources are saved.

The present invention relates to a flexible multi-level bridgeless power factor correction converter and a modulation method. The converter comprises a AC inductor part, an electric power electronic switch network and a DC capacitor part, the anode of a diode D1 is connected with the drain of a switching tube S1, and the source of the switching tube S1 is connected with the drain of a switching tube S2; the anode of a diode D2 is connected with the drain of a switching tube S3, the source of the switching tube S3 is connected with the drain of a switching tube S4, and the source of a switching tube S5 is connected with the source of the switching tube S3; the source of a switching tube S6 is connected with the source of the switching tube S1, the cathode of the diode D1 is connected with the cathode of the diode D2, the source of the switching tube S2 is connected with the source of the switching tube S4, and the drain of the switching tube S5 is connected with the drain of the switching tube S6. The flexible multi-level bridgeless power factor correction converter and the modulation method can reduce the inductor loss and size, enable the on-state loss at a low input voltage to be reduced, are smaller in DC capacitance, have higher power density, and can switch the five-level and seven-level two working states flexibly on the condition of not changing the circuit structure.

The invention relates to an HLR worksheet processing device based on CORBA interface quick input. The device includes a BOSS HLR interface module, an NEMU server module, an HLR module, wherein, the NEMU sever module comprises a CORBA interface module, an FSM processing module and a DX information transmission module; and the HLR module comprises an EMT module and an HLR information bus module. By using the device, a service supporting ability oriented to costumers is enhanced, defaulting of consumers is controlled effectively, complaint is reduced, and satisfaction of consumers is improved. The devise also solves a problem that an interactive interface between a BOSS based on an MML way and an HLR has a business peak bottleneck problem with a long time-lapse in the situations of a batch processing as well as .stopping or recovering the utilization of the machine at the beginning or end of a mouth.

The invention relates to the field of agricultural machinery, in particular to an agricultural liquid medicine spraying device. The agricultural liquid medicine spraying device comprises a liquid medicine box body, a mounting plate, a belt wheel moving frame, an injection needle adjusting mechanism, an adjustable spraying mechanism, an insertion power mechanism and a pipe fitting cleaning mechanism; the liquid medicine box body is fixedly mounted on the mounting plate, and the belt wheel moving frame is fixedly mounted at the bottom of the mounting plate; and the injection needle adjusting mechanism is fixedly mounted on the mounting plate, the adjustable spraying mechanism is fixedly mounted on the liquid medicine box body, the pipe fitting cleaning mechanism is fixedly mounted on the insertion power mechanism, the insertion power mechanism is hinged to the mounting plate, and the insertion power mechanism is hinged to the injection needle adjusting mechanism. The device has the function of spraying liquid medicine, the function of adjusting the spraying angle, the function of conducting fixed-point injection on roots of crops and the function of adjusting the distance between devices to be suitable for different furrow distances.

The invention discloses an absorption compression type heat pump rectification system. The absorption compression type heat pump rectification system comprises a rectification tower and an absorptioncompression heat pump set, wherein a gas absorption end of a compressor is connected with a steam outlet of a generator and an exhausting end of the compressor is connected with a steam inlet of an absorption device; after steam at a tower top enters the generator and a cooler, part of condensed liquid returns back to the upper part of the rectification tower through a reflowing pump and the restof condensed liquid is used as a discharged material of the tower top; and after material liquid at a tower bottom enters the absorption device through a first tower material pump and is heated, the material liquid returns back to the lower part of the rectification tower. Gas exhausted by the compressor passes through a first middle heat exchanger and then enters the absorption device; and the material liquid at the tower bottom passes through the absorption device and then is subjected to step heat exchange through the first middle heat exchanger. By adopting the absorption compression typeheat pump rectification system disclosed by the invention, the problem that the rectification and energy-saving effect of a steam compressor type heat pump is not good when the temperature differencebetween a tower top and a tower kettle is relatively great; and a conventional rectification tower can be directly subjected to energy-saving modification and a flow of an existing rectification toweris not damaged.

The invention discloses a zero oil swap energy conversion valve with double hydraulic systems and aims to provide a conversion valve capable of achieving zero oil swap of normal / emergency standby hydraulic systems in on-off conversion and switching the normal / emergency standby hydraulic systems reliably. The zero oil swap energy conversion valve is implemented by the technical scheme as follows: an unloading hole communicating a step hole of a valve cavity and an oil return check valve cavity homodromously communicating to an oil return pressure port channel are formed in a valve body; a second oil inlet connecting channel and a first oil inlet connecting channel communicate symmetrically to a second oil inlet check valve cavity oppositely to form an oil inlet loop communicating to the oilreturn pressure port channel, and two oil return check valves ejecting each other oppositely attach a valve element tightly by means of pressures of the hydraulic systems and a spring force of a valve spring; under the action of the pressures of the hydraulic systems, entrance and discharge of a normal pressure supply oil way and an emergency pressure supply oil way are separated by a seal ring arranged on a step slide valve to switch normal / emergency pressure supply oil, separately, so that on-off working states of a main hydraulic oil tank and an assistant hydraulic oil tank are controlled.

The invention discloses a portable microelectronic alternate current counting device testing table. The portable microelectronic alternate current counting device testing table comprises a safety combination and a load combination, wherein the upper end of the safety combination is provided with a power source, both sides of the lower end of the safety combination are electrically connected with acode box and a code delivery box respectively, the upper end and the lower end of one surface of the code box are provided with L and U, one side surface of the code delivery box is electrically connected with a code changing switch, the tail end of the code changing switch is matched with and connected in a switching mode with the L or U, the code delivery box and the code box are electrically connected with the code switching switch, and the upper end and the lower end of the other surface of the code delivery box are provided with UU and LU; one side surface of the load combination is electrically connected with a circuit-changing switch. The entire portable microelectronic alternate current counting device testing table is low in manufacturing price, smaller in weight and size compared with traditional equipment, simple in operation and capable of performing field testing at any time without professionals.

The invention relates to the field of traffic control, in particular to a device for improving the passing efficiency of gates at entrances and exits of office buildings. The device comprises an outlet channel, an inlet channel and a platform located between the outlet channel and the inlet channel. An entrance auxiliary lane and an exit auxiliary lane are arranged on the front side and the rear side of the platform correspondingly. A security room for an operator to stand is arranged on the platform; supporting frames which are arranged in a central symmetry mode are fixed to the upper portion of the platform. A first swing cavity and a second swing cavity are formed in the supporting frame. According to the device for improving the passing efficiency of the gates at the entrances and exits of the office buildings, mutual switching between the exit channel and the entrance channel can be achieved, meanwhile, the auxiliary lane is arranged in the device, the passing efficiency of the device can be improved, the device recognition probe can swing at will, and recognition of vehicles of different heights can be facilitated.

The invention relates to the technical field of injection molding devices, and discloses an intelligent automobile part injection molding system which is characterized in that according to the type of a mold needing injection molding, corresponding branch valves are opened, injection molding and forming are carried out, a discharging air cylinder is controlled to operate, a formed part is ejected out and falls on a conveying mechanism, and mutual switching use of multiple molds is achieved. The intelligent injection molding is realized while the investment of an injection molding production line is reduced, the error influence caused by one-by-one butt joint of injection molding interfaces in the prior art is not needed, and the centralized injection molding of the automobile parts is completed and the injection molding efficiency is improved by controlling the operation sequence of the discharging air cylinder; one end of the injection molding nozzle and the cleaning pipe generate vortex and high temperature, it is ensured that injection molding liquid in the nozzle is kept in a molten state, surface cleaning is completed in cooperation with scraping treatment of an inclined scraper, incomplete cleaning caused by solidification and the like is avoided, and self-cleaning treatment of the inner wall of the injection molding nozzle is completed through arrangement of a cleaning disc and the like.

The invention discloses a dual-mode switching frequency control system. The dual-mode switching frequency control system comprises an oscillator, a phase discriminator and a loop filter. In an RT mode, the oscillator can output a clock signal with a preset frequency; in a PLL mode, the oscillator can output a clock signal synchronized with an external clock signal; and in the RT mode and / or the PLL mode, when the oscillator works in a lowest-frequency working state, a clock signal with the lowest frequency can be output. According to the dual-mode switching frequency control system provided by the embodiment of the invention, mutual switching between the RT mode and the PLL mode can be realized, the establishment speed of the phase-locked loop is high, the establishment time required when the frequency of the clock signal output by the oscillator is synchronized to the frequency of the external clock signal during switching between the two modes can be shortened, and the problem of single-mode control of switching frequency in a common switching power supply is effectively solved.