1010results about How to "Reduce layout" patented technology

The invention provides a hierarchical protection control system facing a regional power grid. The hierarchical protection control system comprises an in-situ level protection device, a substation area protection control system and a wide area protection control system, wherein the in-situ level protection device is configured according to a traditional protection scheme and adopts a direct sampling direct trip mode or a direct sampling network trip mode; the substation area protection control system is configured according to substations or voltage classes, utilizes an information sharing advantage to improve the backup protection performance, realizes protection functions of backup protection, redundancy protection, failure protection, and the like, and control functions of spare power automatic switching, low-frequency and low-voltage load shedding, and the like, and adopts a network sampling network trip mode; and the wide area protection control system is configured according to areas, realizes functions of wide area backup protection, self-adaptive adjustment of protection fixed values, low-frequency and low-voltage load shedding, power grid state evaluation, safety pre-warning, and the like, and realizes the interaction and the sharing of information of intelligent transformer substations in the areas through a wide area communication net. The hierarchical protection control system has the advantages that the reliability and the selectivity of relay protection can be improved on the basis that protection configuration of the existing power grid is not changed, so high requirements of power grid interconnection, new energy access, and the like on relay protection are satisfied.

The invention discloses a shaftless driven type integrated motor propeller which is arranged on the tail part of a boat body of a water vehicle or underwater vehicle and comprises a front stator, a rotor propeller and a rear stator which are serially arranged on a solid non-rotating shaft, wherein the periphery of the propeller is connected with the circumferential rim of the annular propeller, a rotor permanent magnet is embedded in the circumferential rim of the propeller, a stator winding is arranged in the inner cavity of a guide pipe, the rotor permanent magnet and the stator winding are sealed by adopting water, and a gap is arranged between the rotor permanent magnet and the stator winding to form an annular motor. The rotor permanent magnet and the stator winding as well as the guide pipe are organically combined to form a modular unit, thus the shaftless driven type integrated motor propeller can be easily installed on a water platform or underwater platform, is suitable for large-power main propelling of a water boat or underwater submergible device, and has the advantages of reasonable structure, high propelling efficiency, low hydrodynamic force radiation noise, excellent cavitation property, safety and reliability.

The invention discloses a carton filling and stacking all-in-one machine. The carton filling and stacking all-in-one machine is characterized by comprising a carton conveying line and a storage device, wherein the head portion of the carton conveying line is connected with one side of a carton alignment device; the storage device is connected with one side of a carton filling station through an unpacking forming mechanism; the other side of the carton filling station is connected with one side of a carton strutting device; the other side of the carton alignment device is provided with a robot body; the robot body is provided with a carton filling and stacking grasp structure; a carton clamping and conveying device is arranged on the other side of the carton strutting device and connected with a carton sealing device; a carton labeling station is arranged on one side of the carton sealing device; a first tray and a second tray are arranged on one side of the carton labeling station. The functions of existing single machines are completely integrated on one machine, stations are linked tightly, the structure is compact, and operation is easy. The carton filling and stacking all-in-one machine is suitable for various specifications, stable in performance, high in efficiency and capable of greatly reducing labor cost.

The invention relates to the field of wireless communication technology and discloses a multi-mode radio frequency antenna switch. The multi-mode radio frequency antenna switch comprises a main switch element, at least one branch switch element, at least one node switch element and at least one branch circuit formed by connecting at least two node switch elements in parallel, wherein all the switch elements form a tree-shaped topological structure, and each node switch element is connected with an emitting/receiving port; each branch circuit is provided with a branch switch element; one end of the main switch element is connected with a radio frequency antenna, and the other end is connected with the branch switch elements in a single-pole multi-throw manner. The multi-mode radio frequency antenna switch adopts the tree-shaped topological structure, not only has a wider frequency band range, but also can effectively reduce parasitic capacitance of the radio frequency antenna to the ground and improve the isolation between the ports, and can achieve a more remarkable parasitic capacitance reduction effect along with increase of the wireless communication working frequency, effectively improve the degree of circuit linearity and reduce insertion loss.

The invention discloses a high-precision unmanned aerial vehicle image non-control points surveying and mapping method and a system thereof. The method comprises the following steps: 1) setting a ground reference station and field photo-control points and collecting the parameters of the ground reference station and the field photo-control points; 2) calibrating an airborne GNSS receiver; 3) using an unmanned aerial vehicle for shooting and collecting an image for a surveying and mapping area; 4) resolving the collected ground reference station and field photo-control points parameters, an airborne GNSS receiver parameter at a shooting exposure point, an image data obtained by shooting and an unmanned aerial vehicle POS parameter; and 5) splicing the images obtained by shooting. According to the method, the images obtained by shooting as well as the data collected by the ground reference station and the field photo-control points, the airborne GNSS receiver and the unmanned aerial vehicle POS are resolved, so that an accurate coordinate at a shooting exposure time can be obtained, a step of image splicing processing is carried out by using the above information, layout of the field photo-control points can be reduced, and precision of aerial mapping of the unmanned aerial vehicle is enhanced.

The invention relates to a smart home system including mobile terminals, a network server, a control center, a household electrical appliance end, and a sensor end. The system is characterized in that the mobile terminals include a smart phone, a tablet PC, a PDA, and other smart devices and the mobile terminals are connected with the control center through the Internet; the network server comprises a central server, a database server, an application server, and a real-time data platform and provides network services for the control center; the control center comprises a CPU, a storage, a GSM communication module, a GPRS communication module, a 3G communication module, a 4G communication module, a power line carrier communication module, a Zigbee module, and a wifi module; and a homeplug and a wifi module are arranged at the household electrical appliance end. Overall, the system is comprehensive in function, simple in operation, safe and reliable.

An electric power supplying device adapted such that a flat wire harness is spirally wound so that the wire harness is increased or decreased in diameter to absorb an excessive length of the wire harness, wherein the electric power supplying device has increased performance of absorbing the excessive length of the wire harness, has a simplified structure, and is of low cost. An electric power supplying device (1, 31) is adapted such that a flat wire harness (8) is multiply wound about a boss (3), a spring member (7, 22) is mounted so as to extend from the boss to an inner diameter section (9a) of a wound section (9) of the wire harness, the wound section is outwardly urged by the spring member, and the wire harness is arranged with a small pitch in the radial direction. The spring member (7, 22) is composed of radially arranged curved plate springs or is a spiral spring curved in a loop shape. The boss (3), the wound section (9), and the spring member (7, 22) are contained on the inner side of an annular wall (2) of a case (6). Curved surfaces (15) for guiding the wire harness are formed on opposite sides of a harness lead-out opening (14) in the annular wall (2).

The invention provides a chemical mechanical lapping device and a system. The chemical mechanical lapping device comprises a wafer supporting seat, a lapping pad, a lapping pad fixed piece, a shaft lever and a raw material providing device, wherein the wafer supporting seat is used for supporting a wafer to be lapped, and a surface to be lapped of the wafer is upward, the lapping pad is arranged on the upper part of the wafer supporting seat, a lapping surface of the lapping pad is downward and is opposite to the surface to be lapped of the wafer, the area of the lapping area of the lapping pad is less than the area of the surface to be lapped of the wafer, the lapping pad fixed piece is fixed on the upper portion of the lapping pad and for fixing the lapping pad, the shaft lever is arranged on the upper part of the lapping pad fixed piece and for driving the lapping pad fixed piece and the the lapping pad to rotate, and the raw material providing device is arranged on the upper part of the wafer supporting seat for providing lapping liquids for the surface to be lapped of the wafer. According to the chemical mechanical lapping device and the system, wafers with diameters of 450mm or more can be lapped simply and accurately.

The invention provides a GOA (Gate Drive ON Array) device and a gate drive circuit. The gate drive circuit comprises at least one clock signal source; a constant voltage low level source; and the GOAdevice. The GOA device comprises at least two GOA units. Each GOA unit comprises a pull-up control module, at least one first pull-up module, at least one second pull-up module, a pull-down module, apull-down maintaining module, at least one bootstrap capacitor and at least one second bootstrap capacitor. According to the GOA device and the gate drive circuit, at least two pull-up modules and atleast two bootstrap capacitors are set in each GOA unit; each pull-up module corresponds to a clock signal source; and through utilization of the pull-up control modules, the pull-down modules and thepull-down maintaining modules, two adjacent lines of pixel units share a gate drive circuit, layout of GOA circuits in a frame area is reduced, and design of an ultra narrow frame is realized.

The invention discloses a double-cell measurement method and device for certain reaction protein (CRP).The device comprises a measurement cell, a reaction cell, an injector assembly, multiple three-way valves, multiple two-way valves, multiple press-off valves and pipes connecting all assemblies, injectors in the injector assembly are connected with the measurement cell and the reaction cell through the three-way valves and the pipes respectively, and a diluent bucket and a CRP reagent R1 liquid bucket are connected with the injectors of the injector assembly through the three-way valves respectively; a CRP reagent R2 liquid bucket is directly connected with the reaction cell; the bottom of the measurement cell is provided with a waste liquor drainage pipe, the pipe is provided with the two-way valves, the top of the measurement cell is provided with two inlets connected with the injectors, openings are formed in the side wall close to the top, and the openings are connected with the reaction cell through the press-off valves and three-way joints; the reaction cell is provided with three inlets, CRP reagent R1 liquid, CRP reagent R2 liquid and diluents are added through the three inlets respectively, and drainage openings are formed in the bottom of the reaction cell and connected with the three-way joints through the press-off valves.By means of the double-cell measurement method and device, detection speed is raised to a great extent, and no contamination is caused.

The invention discloses a server and a parking space detection method and system and relates to the field of parking lot parking space detection. The parking space detection method includes: receiving parking space magnetic-field intensity change information transmitted by a magnetic-field sensor of each parking space; determining parking space occupancy according to the parking space magnetic-field intensity change information. A novel parking space detection technology is realized on the basis of the magnetic-field sensors, active power support is not needed, requirements on light conditions are avoided, and occasions like underground parking lots and multilayer parking lots can be adapted.

The invention discloses a low NOx rotational flow coal dust combustion device of an industrial boiler, belonging to the technical field of industrial boilers. The low NOx rotational flow coal dust combustion device of the industrial boiler comprises a hearth, a rotational flow coal dust burner, a burnout chamber, a tail flue, an ash bucket, an economizer and an air preheater, wherein the hearth is divided into a lower heat-insulation hearth and an upper water cooled hearth; the heat-insulation hearth is positioned on the lower part of the hearth and is in a front-back wall protruded or left-right wall protruded structure; the rotational flow coal dust burner is respectively arranged on the left and right walls or the back and rear walls of the heat-insulation hearth; the ash bucket is positioned in the lower part of the heat-insulation hearth to collect the ash residue of combusted coal dust; the water cooled hearth is internally provided with a water cooled wall used for adsorbing radiant heat and convection heat so as to heat steam water mixture from the economizer; the burnout chamber is positioned on the upper outlet of the heart; the tail flue is positioned on the outlet of the burnout chamber; and the economizer and the air preheater are successively arranged in the tail flue. The invention realizes hedging combustion of the left and right walls or the back and rear walls of the rotational flow burner so as to realize stable and efficient combustion and realize the application of the low NOx combustion technology.

The invention discloses a fluid heat exchange assembly and a vehicle heat management system. The fluid heat exchange assembly comprises a fluid conduction module and a fluid heat exchange module. Thefluid conduction module comprises a base portion, a first body portion and a second body portion. The base portion comprises a first installation cavity and a second installation cavity. At least partof the first body portion is located in the first installation cavity. At least part of the second body portion is located in the second installation cavity. The base portion comprises a first path,a second path, a third path, a fourth path, a fifth path and a sixth path. The first path communicates with at least one of the second path and the third path. The fourth path communicates with at least one of the fifth path and the sixth path. A first fluid heat exchange channel communicates with the second path. A second fluid heat exchange channel communicates with the fifth path. According tothe fluid heat exchange assembly, the line routing is reduced, and the overall structure is compact.

The invention discloses a U-shaped steel-concrete composite beam, relates to a composite beam, and solves the problems that the conventional I-shaped steel-concrete composite beam has poor fire resistance and poor overall stability, an outsourcing steel-concrete laminated plate composite beam has low anti-shear bearing capacity, the complete cooperative work of a steel beam and concrete is not guaranteed easily. The U-shaped steel-concrete composite beam comprises a concrete plate, U-shaped steel, a plurality of pieces of angle steel, a plurality of longitudinal stress reinforcing steel bars, a plurality of erect reinforcing steel bars and the concrete; each web plate of the U-shaped steel is fixedly connected with a flange plate which is arranged horizontally; the U-shaped steel and the flange plate are integrated; the plurality of pieces of angle steel are fixedly connected in the U-shaped steel along the length direction of the U-shaped steel; an erect reinforcing steel bar is welded on the side surface of each piece of angle steel; the longitudinal stress reinforcing steel bars are fixedly connected with the corresponding erect reinforcing steel bars along the length direction of the U-shaped steel; the concrete plate is arranged on the top of the U-shaped steel; the reinforcing steel bars in the concrete plate are bent and then extend into the U-shaped steel; the concrete is cast in the U-shaped steel. The U-shaped steel-concrete composite beam is applied to civil engineering construction.