211results about How to "Avoid useless work" patented technology

The invention discloses an air conditioner control method, an air conditioner control device and an air conditioner. The air conditioner control method includes that under a refrigerating mode or a dehumidifying mode, cleaning the air conditioner before turning off the air conditioner when an air conditioner shutdown command is received, wherein the cleaning operation includes starting a fan of the air conditioner and / or running a compressor of the air conditioner in a heating mode. By means of the technical scheme, when turning off the air conditioner after refrigerating or dehumidifying, condensed water generated by refrigerating or dehumidifying in the evaporator and an indoor unit is dried through starting the fan and / or using the compressor to heat so as to automatically clean the air conditioner, the germ generation even mildewing of the indoor evaporator and air outlet frame due to condensed water stagnation is effectively avoided, the air outlet quality of the air conditioner is improved, and the user experience is improved.

This invention refers to the caption broadcasting technology of the producing and broadcasting mechanism of the television program in the broadcasting and TV field, specifically referring to a method for guaranteeing TV caption broadcasting device performance based on diversity application. The method uses a random number generator based on the data structure of the caption broadcasting system, simulates the practical application environment, automatically constructs the objects of picture and caption, then uses the caption to render an engine, performs multi-threading automation static rendering and dynamic special rendering to the caption, at the same time records the use condition of the system resource so as to monitor the defect of the logic design of the caption rendering, and to guarantee the safety, instantaneity and stability of the caption broadcasting system.

The invention relates to a solar automatic tracking and positioning device which comprises a tracking control circuit for controlling a mechanical transmission mechanism and a solar tracking and positioning sensor connected with the tracking control circuit and used for transmitting a solar position signal to the tracking control circuit, wherein, the tracking control circuit is further connectedwith a first direct current speed-reducing gear for adjusting a horizontal angle of the solar tracking and positioning sensor and a second direct current speed-reducing gear for adjusting a pitch angle of the solar tracking and positioning sensor, and the solar tracking and positioning sensor further comprises a comparing light signal receiver which is taken as a comparing light signal and a startsensor array which is taken as a compared light signal. The adoption of the solar automatic tracking and positioning device realizes the high-precision solar tracking without blind zones, leads the tracking device to be capable of identifying the different weather conditions and the daytime situations and improves the reliability of the ability of differentiating the solar position; furthermore,the solar automatic tracking and positioning device can work intermittently according to the sunrise and the sunset, thereby preventing the production of useless work.

The invention discloses a device for placing cold beverages on a dune buggy. The device comprises a box body (1), and a cover plate (2) is connected to an opening of the box body (1); a turnplate (3) is rotationally connected into the box body (1) and provided with a plurality of brackets (4) with the cross sections being in a U shape so as to be used for placing beverage bottles (5), and the brackets (4) are distributed around the turnplate (3) in an equal interval mode; every two adjacent brackets (4) are connected through an arc-shaped baffle (25), and the brackets (4) and the arc-shaped baffles (25) form an annular structure (26), and an ice bag for releasing cold air to the beverage bottles (5) is contained in the annular structure (26); and the bottom of the box body (1) is provided with a power device body for driving the turnplate (3) to rotate. According to the provided device for placing the cold beverages on the dune buggy, the beverage bottles can be kept cold and taken out conveniently.

The invention discloses an automatic installing and detaching device of a drill rod of a horizontal directional drilling machine. A guiding sleeve is welded to a stand column (13), and a horizontal guiding rod (11) is installed in the guiding sleeve of the stand column (13). One end of the horizontal guiding rod (11) is fixed on a horizontal installation seat (9), and a horizontal limiting installation board (14) is fixed on the stand column (13). One end of a horizontal sliding oil cylinder (12) is fixed on the horizontal installation seat (9), and the other end of the horizontal sliding oil cylinder (12) is fixed on the guiding sleeve of the stand column (13). A vertical guiding rod (10) is installed on the horizontal installation seat (9), one end of a vertical sliding oil cylinder (15) is fixed on the horizontal installation seat (9), and the other end of the vertical sliding oil cylinder (15) is fixed on a vertical installation seat (7). A second sensing switch (32) is arranged on the vertical installation seat (7), and a grasping hand oil cylinder (8) is respectively connected with the vertical installation seat (7) and a grasping hand (4). The automatic installing and detaching device can avoid idle work when the drill rod is automatically installed and detached, ensure the personal safety of operators and meanwhile reduce energy consumption.

The invention relates to a refrigerator control method. The refrigerator control method comprises the following steps of acquiring to-be-fetched food material information, determining the storage position of to-be-fetched food material according to the to-be-fetched food material information, and moving a storage cavity storing the to-be-fetched food material to an object taking opening. Accordingto the refrigerator control method adopting the technical scheme, the storage cavity storing the to-be-fetched food material can be automatically moved to the object taking opening according to needs, the user searching process is eliminated, and the efficiency is improved; and meanwhile, the user is prevented from forgetting the soon-expired food material or can treat expired food material, so that the resource waste can be reduced, and the sanitation and the cleanness of the refrigerator can be kept.

The invention provides an indoor unit of an air conditioner and an airflow control method thereof. The indoor unit of the air conditioner and the airflow control method thereof can solve the problems that the circulation and convection effect between air output by air conditioners and indoor air is poor in the refrigeration process of indoor units, balance of the indoor temperature is difficult and the comfort level is low in the prior art. The indoor unit of the air conditioner comprises a shell, a framework, an evaporator, a fan, an air outlet and an air guide plate, an air suction port is formed in the bottom side surface of the framework, an air suction channel is formed in the back of the framework, an air inlet is formed in the top of the shell, a top panel used for opening or closing the air inlet is arranged on the top of the shell, and a first drive part used for driving the top panel to open or close the air inlet is installed in the shell. According to the indoor unit of the air conditioner and the airflow control method thereof, flowing circulation can be formed between the air output by the air conditioner and the indoor air both in the refrigeration process and the heating process, the air output by the air conditioner and the indoor air can be fully mixed, and the comfort level can be increased; in the refrigeration process, the top panel closes the air inlet, indoor hot air enters the air conditioner from the air suction port in the lower part for participating in heat exchange, top hot air close to the roof does not participate in heat exchange, and therefore the energy conservation effect is greatly improved, and the energy consumption is lowered.

The invention discloses a petroleum pipeline supporting base capable of being automatically adjusted, and belongs to the technical field of petroleum pipeline supporting. The petroleum pipeline supporting base capable of being automatically adjusted comprises a base, wherein two side plates are fixedly arranged on the top face of the base in a symmetrical structure; two rotating shafts A are symmetrically arranged between the two side plates in a penetrating mode; arc-shaped plates are connected to the middles of the rotating shafts A in a sleeving mode; two racks are arranged on the outer sides of the side plates in a symmetrical structure; a supporting plate is fixedly arranged between the top faces of the two racks; a plurality of tooth grooves A are annularly formed in the positions, relative to the racks, of the outer walls of the rotating shafts A at equal intervals; the interior of the base is hollow to form a cavity; two rotating shafts B are symmetrically arranged in the middle of the cavity in a penetrating mode; a plurality of tooth grooves B are annularly formed in the positions, relative to the racks, of the outer walls of the rotating shafts B at equal intervals; andtwo fixing assemblies are symmetrically arranged on the front sides and the rear sides of the rotating shafts B. According to the petroleum pipeline supporting base, the convenience degree of petroleum pipeline laying is improved, the fixing firmness of a petroleum pipeline is also enhanced, double purposes are achieved at one stroke, and convenience and rapidness are achieved.

The invention relates to a vertical roller mill, which comprises a vertical main rotating shaft arranged on a machine body, wherein a speed reducer and a motor are connected to the lower end of the main rotating shaft sequentially; a grinding bowl is arranged at the upper end of the main rotating shaft; the upper part of the inner side of the grinding bowl contacts a plurality of grinding rollers; the grinding rollers arranged on the grinding roller shaft by a bearing; the grinding roller shaft is connected to one end of a rocker arm; the middle part of the rocker arm is hinged to the machinebody; the other end of the rocker arm is hinged with the upper end of a hydraulic cylinder; the lower end of the hydraulic cylinder is arranged on the machine body; a central feed pipe which aligns with the grinding bowl downwards is arranged on the top of the machine body; and a discharge hole is formed below the grinding bowl on the machine body. The vertical roller mill has the advantages of convenience for oil injection, high yield, low energy consumption, large processing capacity, high efficiency and sealing performance, adjustable grinding force and the like, is easy to maintain and overhaul, and the technical problems of enrichment of steel slag and iron granules, high abrasion of the mill, difficulty of overhauling of equipment and the like are solved radically.

The invention relates to a sweeping method of stubborn stains. The sweeping method includes: a sweeping robot acquires an area current situation image after sweeping a to-be-swept area and compares the area current situation image with the reference image of the area in a stain-free state to mark a to-be-confirmed stain area; after the to-be-confirmed stain area is determined as a stubborn stain,the sweeping robot performs intensive sweeping on the stubborn stain. The sweeping method has the advantages that the stubborn stain in the to-be-swept area can be accurately identified, and the sweeping robot is prevented from performing intensive sweeping on a normal alternation area.

The invention discloses a solid veterinary drug multistage crushing device for livestock farms, and belongs to the technical field of veterinary drug crushing, wherein the solid veterinary drug multistage crushing device comprises a first shell, a second shell, a transmission shaft, a grinding block, a grinding disc and a screen; the right side of the first shell is provided with the second shell;a transmission shaft is arranged in the first shell, a plurality of grinding blocks are evenly distributed on the transmission shaft, a grinding disc is arranged below the grinding blocks, and a screen is arranged between each two adjacent grinding blocks; a feeding port is formed in the top end of the first shell, and a discharging port is formed in the left side wall of the bottom of the firstshell; a gear is arranged at the top end of the transmission shaft, a limiting frame is arranged on the upper surface of the second shell, and a rack is inserted into the limiting frame in a penetrating mode. The solid veterinary drug multistage crushing device is low in cost, convenient to maintain, simple and small in structure, convenient to carry and suitable for various places.

The invention belongs to the technical field of preparation of alcoholic beverages in a distillation method, and particularly discloses a Baijiu brewing device. The Baijiu brewing device comprises a distillation retort, a gas introduction pipeline and a condensation apparatus, wherein one end of the gas introduction pipeline is communicated with the upper portion of the distillation retort, and the other end is communicated with the condensation apparatus; a partition plate is installed in the distillation retort, and a heating apparatus is arranged at a portion positioned below the partition plate in the distillation retort; and the Baijiu brewing device also comprises a steam pipeline with a bent middle portion, and a pressure valve is arranged in the steam pipeline; two free ends of the steam pipeline are positioned on a same straight line, one end of the steam pipeline is connected to the center of the upper portion of the distillation retort in a sliding manner, and the other end is connected to the center of the partition plate in a sliding manner; a spiral groove is formed on the inner wall of the distillation retort above the partition plate, and the steam pipeline is provided with a rolling ball; and the lower end of the steam pipeline is connected with a pushing plate, and the steam pipeline penetrates through the pushing plate. The technical scheme is adopted to distill Baijiu, and the original fermented liquid can be stirred when Baijiu is distilled, so that the original fermented liquid is uniformly heated, and the distillation effect can be ensured.

The invention discloses an automatic feeding and discharging mechanical device applied on a numerically controlled lathe. The automatic feeding and discharging mechanical device comprises a built-in manipulator and a material supplementing manipulator, wherein the material supplementing manipulator comprises a vertical movement mechanism and a horizontal movement mechanism which are perpendicularly connected; the vertical movement mechanism is used for vertically moving and clamping workpieces to be machined from an upper tray of a material platform at the front end of the material supplementing manipulator, and the workpieces to be machined are horizontally transferred to the built-in manipulator through the horizontal movement mechanism; and the built-in manipulator and the material supplementing manipulator are mutually perpendicular to each other, and the built-in manipulator is used for clamping the to-be-machined workpieces horizontally transferred to the built-in manipulator and transferring the workpieces into the numerically controlled lathe to be machined. The automatic feeding and discharging mechanical device has the beneficial effects that the degree of automation of the numerically controlled lathe is effectively improved, the production efficiency is improved, the product quality stability is ensured, the production cost is lowered, and the market competiveness of enterprises is enhanced.

The embodiments of the present invention provide a fracturing vehicle control method and device and relates to the technical field of fracturing equipment control. According to the fracturing vehiclecontrol method and device, firstly a hydraulic motor, a hydraulic pump and an engine that need to be operated are selected through a preset pressure protection value and a preset construction displacement value such that the actual output total power of the hydraulic motor, the hydraulic pump and the engine are matched with a maximum output power which is determined through the preset pressure protection value and the preset construction displacement value, and the increase of extra work caused by excessive actual output total power is avoided. Based on an obtained current displacement value and the preset construction displacement value, the output current of the hydraulic motor or the hydraulic pump is adjusted, and thus the purpose of high vehicle utilization efficiency, small power loss and energy saving under different power is achieved.

The invention discloses an overload protective system and method of excavator working devices and an excavator, relating to the technical field of interference prevention of large machines. The system comprises a controller, a plurality of stress sensors, an engine rotating speed control device and an alarm device, wherein the controller is sequentially connected with the stress sensors; the controller is respectively connected with the engine rotating speed control device and the alarm device; and the aim of automatic adjustment for overload protection of the excavator working devices is achieved through comparing stresses allowed by all working devices with the actual stress values tau of all the working devices in working to judge whether the working devices overload, and then, cutting off pilot pressure, outputting alarm information, reducing engine rotating speed P to an idle speed state and the like on each working direction based on the judgment result. By using the overload protective system and method of the excavator working devices, the service life of each working device is prolonged, and therefore, the service life of the excavator is prolonged, the work efficiency of the excavator is increased, and the requirement for operating skills is lowered to a certain extent.

The invention discloses a remote sewage detection system, comprising a central processing unit, and a display module, a sensor module, a relay module, a storage module and a power supply management module connected with the central processing unit, wherein the central processing unit is connected with a GPRS module through a serial port communication module, the relay module is connected with sewage treatment equipment, and the GPRS module is wirelessly connected with an intelligent mobile phone. The remote sewage detection system provided by the invention employs a GPRS network to monitor water pollution in real time, realizes remote control of sewage purifying equipment through the intelligent mobile phone, has the advantages of reasonable design, low cost, convenience in usage, various functions and a high intelligentization degree and effectively overcomes deficiencies of conventional sewage monitoring technology.

The invention discloses an outer wall energy-saving coating and a production method thereof. The coating comprises the following components in percentage by weight: 0.5-1.5% of 10% sodium hexametaphosphate solution serving as a wetting dispersant, 1.5-2.5% of ethylene glycol serving as an anti-freezing agent, 0.15-0.25% of antifoaming agent, 0.5-1.5% of film forming aid, 0.5-1% of thickening agent, 1.5-2% of bentonite serving as an anti-settling agent, 15-20% of heavy calcium carbonate serving as filler, 0.2-0.5% of monocrystalline silicon powder serving as a reflection functional material, 2-5% of aluminum silicate serving as a reflection thermal insulation functional material, 0.5-1.5% of antimony oxide serving as an infrared absorption material, 8-12% of pigment filler, 8-12% of heat insulation functional material, 25-35% of elastic acrylic emulsion, 20-25% of water serving as a solvent and 0.05-0.15% of ammonia water serving as a pH regulator.

The invention provides a cleaning device for a live line tool. The cleaning device comprises a water tank, a clamping manipulator is arranged on the water tank, a rotating cylinder is arranged at the upper end of the clamping manipulator, the clamping manipulator is driven by the rotating cylinder to rotate, a placing table is arranged on the left side of the water tank, a drying device is arranged on the right side of the water tank, the clamping manipulator grabs the tool from the placing table and puts the tool into the water tank for cleaning, and the tool is placed into the drying device for drying at last. The clamping manipulator clamps the live line tool and put the live line tool into the water tank, and cleaning is conducted on the live line tool with cleaning fluid in the water tank; the drying device is arranged, drying is conducted on the live line tool, and rusting caused by water on the surface of the live line tool is avoided; stirring blades are arranged to stir the cleaning fluid in the water tank, and cleaning on the live line tool in the water tank is more complete; a contact sensor is arranged, and it is avoided that the clamping manipulator conducts idle work.

The invention discloses an intelligent-climbing and automatic-cleaning robot. The intelligent-climbing and automatic-cleaning robot comprises a body and sucking devices capable of sucking the body to a sucked surface. The intelligent-climbing and automatic-cleaning robot is characterized in that displacement driving devices are arranged between the sucking devices and the body, are movably connected with the body and can drive the body to vertically swing or swing in the circumferential direction, the at least two sucking devices are arranged in an array mode along the body, scrubbing parts capable of scrubbing a cleaned object are arranged near the sucking devices, connecting pieces are arranged between the sucking devices and the displacement driving devices, and each displacement driving device comprises a displacement base, a first driving device body for driving the corresponding displacement base to rotate and a second driving device body, wherein the second driving device bodies are used for driving the body to vertically swing. By means of the intelligent-climbing and automatic-cleaning robot, the technical problems that an existing cleaning device can-not carry out free climbing and automatic cleaning on the surface of the cleaned object, use is inconvenient, and cleaning efficiency is low are solved.

The invention discloses an LED (light-emitting diode) chip cutting cutter with a novel structure and an LED chip cutting method, which belong to the field of semiconductor device processing. The LED chip cutting cutter comprises a flange plate and a blade, wherein the flange plate is shaped like a disk, the center of the flange plate is provided with a flange bulge, the edge is provided with a flange transition, and the center of the flange bulge is provided with a mounting hole; the blade is shaped like a ring, and is fixed at the outer edge of the flange transition. The LED chip cutting cutter is highly stable under the condition of high-speed rotation, and is convenient to mount and dismount. By taking the cutting cutter as a cutting tool, the cutting method can be adopted to directly cut out chips with a trapeziform structure, cutting time is shortened, cutting efficiency is increased, and the cut chips are not damaged, and are high in luminous efficiency.

The invention relates to a wall surface ventilation device convenient for keeping indoor drying. The wall surface ventilation device comprises an intake fan and an exhaust fan which are arranged on the wall surfaces of a barn; the intake fan is arranged at the position, away from the ground surface, of any wall surface; the exhaust fan is arranged at the position, close to the ground surface, of the opposite wall surface of the intake fan; the opening and closing of the intake fan and the exhaust fan are controlled by an electromagnetic valve; the electromagnetic valve is connected with a controller; the controller is connected with temperature sensors arranged inside and outside the barn; an air drying cylinder is arranged on an intake pipe of the intake fan; at least two layers of two-layer filter screens with a sandwich structure are arranged on the inner wall of the drying cylinder; a plurality of drying agents are uniformly arranged in the sandwich layer of the filter screen at intervals. Air entering the intake pipe passes through the drying cylinder, and the air can be well dried by the drying barrel, so that grains are prevented from being mildewed; moreover, the waste of energy consumption is avoided by intelligently controlling the intake fan and the exhaust fan.

The invention provides a concrete offcut recycling device, belongs to the technical field of civil construction equipment and solves the problem that existing concrete milling is high in labor intensity. The concrete offcut recycling device comprises a rack, a milling barrel is fixedly connected on the rack, a fixed screw and a movable screw are rotatably connected in the milling barrel, a milling passage is formed between the fixed screw and the movable screw, the rack is rotatably connected with an incoming material conveying belt on the outer side of the milling barrel, an output end of the incoming material conveying belt is positioned above one end, larger in width, of the milling passage, first grid holes are formed in the incoming material conveying belt, the rack is connected with a first recycling passage below the incoming material conveying belt, and the rack is further rotatably connected with a first returning material conveying belt, a second returning material conveying belt and a third returning material conveying belt on the outer side of the milling barrel. The concrete offcut recycling device can automatically mill and recycle concrete offcut and is high in milling quality and efficiency.

The invention relates to the field of bacterium detection and in particular discloses a multipoint sampler for bacterium detection. The multipoint sampler comprises a body, a land traveling device, a water surface traveling device, a traction device, a land sampler and a pond sampler, wherein the land traveling device is used for automatically traveling on soil surface and sand; the water surface traveling device realizes any motion in water; the traction device drives the pond sampler to make any wide-range transverse motion in a water sampling area and can drive the pond sampler to make transverse micro motion in a narrow range; the land sampler is used for sampling soil and sand of different depths due to up-and-down telescopic motions; the pond sampler is used for sampling water of different depths by utilizing up-and-down telescopic motions; bottom sludge in the water area can be collected at the lower end of the pond sampler. The multipoint sampler disclosed by the invention can realize amphibious operation, can also realize automatic sampling of the soil layer, grit, water and water bottom sludge and is applied to sampling of the water bottom sludge in the water area of different depths.

The invention discloses an automatic centering fixture for annular workpieces. The automatic centering fixture comprises a support, a motor, a first feed lead screw, a second feed lead screw, a first coupling, a first guide plate and a second guide plate. The motor is fixedly connected with the support, the first feed lead screw is connected with the support by a second coupling, the second feed lead screw is parallel to the first feed lead screw, and the first coupling is connected with the left end and the right end of the first feed lead screw; two slide seats are respectively welded at the lower end of the first guide plate and the lower end of the second guide plate and are respectively connected with the first feed lead screw and the second feed lead screw, a conical tubular mandrel and a positioning column in the shape of a long rod are arranged on the first guide plate, the left portion of the mandrel is large while the right portion of the mandrel is small, and the positioning column is positioned in the center of the mandrel; a circular hole is formed in the second guide plate, and the positioning column penetrates the circular hole and is parallel to the first feed lead screw. The automatic centering fixture has the advantages that the production time can be effectively saved, the movement stability can be improved, and the automatic centering fixture brings convenience for accurately positioning and clamping the annular workpieces.

The invention discloses a device and a control method for preparing wind energy, ocean energy and solar energy, wherein the device comprises a fan, an impellor, a solar battery pack, a storage battery, a commercial power interface, an air tank, an air compressor, a sensor, a transmission and a controller, the corresponding transmission gears are selected according to the real-time pressure of the air tank, so that a drive electromotor can operate within the rotation speed range with the highest efficiency so as to reduce the number of air compression stages required without the transmission; the instability of energy supply of wind energy, ocean energy and solar energy can be eliminated by adopting commercial power supplement measures, and a flywheel is arranged between an electromotor and the air compressor, thus the rotation speeds of the electromotor and the air compressor can be more stable; and meanwhile, direct-current electricity energy is provided for the drive electromotor of each stage of air compressors by utilizing the wind energy, ocean energy and solar energy, the complementation of multiple kinds of renewable energy sources is realized, the instability of single renewable energy source is relieved, and greater available power can be obtained.

The invention discloses an omni-directional distributing and conveying device. The omni-directional distributing and conveying device comprises at least two conveying mechanism, each conveying mechanism comprises at least two mounting support bases and a fixing plate, at least one omni-directional wheel group is arranged on each fixing plate, a controller is arranged in each fixing plate, and a signal interface and a power interface are arranged on the lower end face of each controller; each omni-directional wheel group comprises a hub motor stator and a transmission wire group, one end of each transmission wire group is connected with the corresponding hub motor stator, the other end of each transmission wire group is connected with the corresponding controller, a hub motor rotor base is arranged on the outside of each hub motor stator, two groups of opposite omni-directional wheel mounting bases are fixedly arranged on the outer side of each hub motor rotor base at a certain angle interval, and at least five omni-directional wheel rollers are movably connected to each omni-directional wheel mounting base. The omni-directional distributing and conveying device is matched with different controlling and detecting devices so that a package can be accurately conveyed to an arbitrary set position. One-way production line type operation is adopted, time saving and high efficiency are achieved, and applied idle work which is similar to the situation that a trolley needs to go back is avoided.

The invention is applicable to the technical field of stainless steel product production and processing, and provides grinding and polishing equipment for stainless steel product production and processing. The grinding and polishing equipment comprises a processing table, wherein support legs are fixed to the bottom part of the processing table; an empty slot is formed in the processing table; a conveyor belt is arranged in the empty slot; a grinding installation frame and a polishing installation frame are sequentially arranged above the conveyor belt; a movable grinding mechanism is arrangedon the top part of the grinding installation frame; a multi-angle air-cooling heat-radiating mechanism is arranged on the inner wall of the grinding installation frame; a rotary polishing mechanism is arranged on the top part of the polishing installation frame; and a screening and poking mechanism is arranged on the front side of the grinding installation frame. According to the grinding and polishing equipment for stainless steel product production and processing provided by the invention, through arranging the multi-angle air-cooling heat-radiating mechanism, grinding parts on a grinding component and a stainless steel product can be heat-radiated and cooled at any time; and through additionally arranging the screening and poking mechanism, workpieces incapable of being repaired by grinding are removed, so that the production and processing efficiency is improved.

The invention discloses a memory operating managing method comprising the steps: a subnetwork dependence convergence protocol (SNDCP) layer saves SNDCP parameters obtained by partitioning and identifying compressed uplink data in a preset SNDCP data queue and sends the characteristic parameters of the SNDCP data queue, which are obtained after saving the SNDCP parameters, to a logical link control (LLC) layer; the LLC layer saves the characteristic parameters of the SNDCP data queue in a preset LLC data queue and sends the characteristic parameters of the LLC data queue, which are obtained after saving the characteristic parameters of the SNDCP data queue, to a radio link control (RLC) layer; after applying for the radio resource, the RLC sequentially calls back LLC callback function and SNDCP callback function according to the received characteristic parameters of the LLC data queue so as to acquire an LLC data packet, process the LLC data packet and send the LLC data packet through the applied radio resource. The invention also discloses a memory operating managing device. Due to the adoption of the memory operating managing method and the memory operating managing device, the space of the memory can be effectively saved.

The invention discloses a ternary-cycle air cooled refrigerator. An electrical control device internally stores parameters such as a refrigerating fan operating target time parameter LCFSJ. The defrosting method comprises a freezing chamber defrosting method, a refrigerating chamber defrosting method and a variable temperature chamber defrosting method. The freezing chamber defrosting method comprises a defrosting entering preparing step, a defrosting preparing step, a defrosting entering step, a defrosting step and a defrosting existing step. According to the ternary-cycle air-cooled refrigerator and the defrosting method thereof, considering specific working conditions in the operation process of the refrigerator, accurate matching of the defrosting control and the actual working conditions is realized, the defrosting effect is ensured, the condition that defrosting is carried out when defrosting is not needed is avoided, frequent defrosting is avoided, excessive starting of a defrosting electrical heater is avoided, so that energy is saved, and a phenomenon that defrosting cannot exit is prevented.

The invention provides a performance fault locating method for distributed database. The method comprises following steps: positioning performance fault nodes which are slow in execution; determining whether the SQL execution plan of the performance fault nodes is changed; if the SQL execution plan is changed, the performance fault positioning is finished and the SQL execution plan of performance fault nodes are optimized, or else, system resource loads, the coordinator performance and user network conditions are successively examined until the performance fault positioning is completed. The method of the invention is simple and efficient; by means of the method, performance faults during user calling database under distributed environment can be quickly and accurately located, greatly reducing the performance positioning time under MPP (distributed database) environment and giving engineers clearer thinking; useless works are avoided and engineers can be more concentrated in solving problems.