33results about How to "Design impact" patented technology

The invention relates to an electrothermal-driven in-plane bistable radio frequency microswitch belonging to the technical field of micro electromechanics. The electrothermal-driven in-plane bistable radio frequency microswitch comprises an electrothermal-driven mechanism, a mechanical locking mechanism and a signal conversion mechanism, wherein the electrothermal-driven mechanism is positioned under the mechanical locking mechanism; and the mechanical locking mechanism is connected with the signal conversion mechanism. The invention can realize the mechanical locking by using a pair of locking contacts, does not require continuous power consumption when keeping in a stable state, also fully develops the advantages of large driving force, high displacement power density and convenient integrated manufacture of an electrothermal driver and can be used as the actuation form of the mechanical locking structure of the switch. The switch has simple structure, foreseeable radio frequency (RF) characteristic, possibility of batch manufacture and practical application and suitability for integral manufacture.

The invention belongs to the aviation field, and relates to an airborne power generator cooling device, which is characterized by comprising a power generator set (1), an oil pump (2), a pressure relief valve (3), a first filter (4), a lubricating oil air cooling system, a temperature bypass valve (6), a non-return valve (7) and a second filter (8). The invention provides an airborne power generator cooling device, which solves the problem of cooling of the power generator in an aircraft full flight envelope range, particularly, in a low-speed condition, and avoids bad influences on the performance of the engine and the engine compartment appearance design.

The invention relates to a cover-opening mechanism for a container with a cover, in particular to a kettle cover-opening mechanism with a gentle opening speed, comprising a pot cover (10), a pot body (20), and a handle (30) connected to the pot body (20), The pot lid (10) is connected to the pot body (20) through a hinge mechanism (40), and the hinge mechanism (40) is arranged at the joint between the handle (30) and the pot body (20), characterized in that: the The rear end of the pot lid (10) is provided with a driving part (11), and the hinge mechanism (40) is provided with an elastic damping mechanism (50), and the damping mechanism (50) is provided with a contact part (51) and a mounting part (52) ), the damping mechanism (50) is fixedly connected to the pot body (20) through the installation part (52); The contact part (51) is always in contact with the driving part (11). The object of the present invention is to provide a kettle opening mechanism with a gentle opening speed, which has a simple structure and low cost.

A vehicle engine cooling fan is disclosed. The invention comprises a tray, a wheel hub and a reinforced rib, and blades. The impeller comprises a tray, a wheel hub, and blades. the blades are airfoil shaped cross section blades, the blades and the wheel hub are formed an integral body, the chord length ratio of the inner and the outer diameters of each blade is between 1:1.1 to 1:1.5, the included angle of each cross section gravity line and the radial straight line of the blades is between 5 degrees to 25 degrees, the projection distance on the rotating axle of each cross section gravity line of the blades is controlled between 2% to 8% of the impeller diameter, the projection distance presents a space twisted shape, and the arc transition is adopted at the connection of the blade and the wheel hub. The reinforced rib is a honeycomb-shaped reinforced rib, and the honeycomb-shaped reinforced rib is of a regular hexagon hexagonal shape. The blades and the diversion ring are connected together. The efficiency is high, the noise is small, the slip flow can not easily occur at the tail part, and the service life is long.

The invention provides a spout swinging mechanism. The spout swinging mechanism comprises a bellows, and a spout is arranged on the bellows through a central rotating shaft of the spout and can rotate around the central rotating shaft; one end of a swinging arm is fixed to the spout, and the other end of the swinging arm is provided with a kidney-shaped hole; a main rocker is composed of an inner connecting rod, a main connecting rod and an outer connecting rod which are sequentially connected in a Z shape; the main connecting rod is fixed to the bellows and can rotate around a fixed center, the inner connecting rod is arranged in the bellows, and the outer connecting rod is arranged on the outer side of the bellows; and the inner connecting rod is connected with the kidney-shaped hole at the other end of the swinging arm through a connecting device in a free rotating mode. According to the spout swinging mechanism, the swinging arm of the spout is located on the rear side of the spout and far away from a high temperature radiation area of a hearth, the service life is long, and jamming is not likely to occur; the transmission structure is simple, connecting parts are few, reliability is high, and manufacturing, processing and installing are easy; arm of force of swinging of the spout is long, the imposed acting force can be reduced significantly, and the labor-saving effect is achieved; and the spout is not affected by the swinging arm, the spout intensity and height are not reduced, and design of the bellows is not affected accordingly.

The invention discloses a T-type heat dissipation device applied to a computer, and relates to the technical filed of computer heat dissipation devices. The T-type heat dissipation device comprises amainboard, wherein the mainboard is provided with a CPU (Central Processing Unit); the upper part of the CPU is connected with a main radiator; a plurality of heat conduction pipes are arranged in themain radiator; the upper parts of the other ends of the plurality of heat conduction pipes are provided with an auxiliary radiator; and the auxiliary radiator comprises a first cooling fin and a second cooling fin, wherein a gap is formed between the first cooling fin and the second cooling fin. The device has the beneficial effects that the temperature of the CPU can be greatly lowered, and theradiators realize quick cooling under a situation that a heat dissipation air quantity is not increased.

An embodiment of the invention discloses an electronic device including a first antenna and a second antenna, wherein the first antenna and the second antenna are capable of forming a transmission path. The device further includes a conductive strip disposed in the transmission path formed by the first antenna and the second antenna and capable of isolating a specific frequency band to prevent thefirst antenna from interfering the second antenna through the transmission path, and / or preventing the second antenna from interfering the first antenna through the transmission path.

The invention relates to a wafer-level chip packaging structure and packaging method. The wafer-level chip packaging structure includes a chip unit provided with a first surface and a second surface arranged oppositely. The first surface is provided with at least one welding window used for electric connection. The second surface is provided with a TSV structure connected with the welding window. The TSV structure includes a through hole penetrating the first surface and the second surface and a slot arranged in the second surface. The boundary of the slot is greater 10 micrometers away from the edge of the second surface. Compared with the prior art, the progress is that the structural strength of a chip is improved.

The invention provides an electric bicycle and a portable storage battery tank thereof. The portable storage battery tank is used for providing the electric bicycle with a power supply and comprises a shell, a storage battery bus and a cable, wherein the shell is provided with an accommodating space; the storage battery bus is arranged in the accommodating space; the cable is accommodated into the accommodating space; one end of the cable is electrically connected with the storage battery bus and the other end is exposed outside the accommodating space as a joint; and the joint is used for being connected to external equipment. The portable storage battery tank provided by the invention is good in portability and convenient to charge. According to the storage battery tank provided by the invention, a special storage battery compartment does not need to be correspondingly designed on the electric bicycle, so that the storage battery tank provided by the invention does not affect the appearance design of the electric bicycle when the electric bicycle is designed.

The invention discloses a copyright information identification system and a copyright information identification method, through the copyright information identification system provided by the invention, security information can be embedded into a design file through an information embedding device, so that the copyright information cannot be tampered, and an online entrance is not easily tampered. Through the value-added service device, a user can obtain deep subdivision domain knowledge through the online entrance, and online interaction is carried out.

A vehicle engine cooling fan is disclosed. The invention comprises a tray, a wheel hub and a reinforced rib, and blades. The impeller comprises a tray, a wheel hub, and blades. the blades are airfoil shaped cross section blades, the blades and the wheel hub are formed an integral body, the chord length ratio of the inner and the outer diameters of each blade is between 1:1.1 to 1:1.5, the included angle of each cross section gravity line and the radial straight line of the blades is between 5 degrees to 25 degrees, the projection distance on the rotating axle of each cross section gravity line of the blades is controlled between 2% to 8% of the impeller diameter, the projection distance presents a space twisted shape, and the arc transition is adopted at the connection of the blade and the wheel hub. The reinforced rib is a honeycomb-shaped reinforced rib, and the honeycomb-shaped reinforced rib is of a regular hexagon hexagonal shape. The blades and the diversion ring are connected together. The efficiency is high, the noise is small, the slip flow can not easily occur at the tail part, and the service life is long.

The invention discloses a parallel bus serial interconnection expansion method with error correction and automatic response mechanisms. A CPU and a plurality of slave FPGAs are connected through a master FPGA, and the master FPGA internally comprises a parallel bus interface and a plurality of master serial interface control circuits, wherein the parallel bus interface and the master serial interface control circuits are connected with the CPU. Each slave FPGA internally comprises a slave serial interface control circuit which is connected with the master FPGA in a serial manner and is interconnected with the slave FPGA internal circuit in a parallel bus interface manner; cPU pass register, the memory mapping mode controls the work of the main serial interface control circuit; an indirectstorage access command is sent to a slave serial interface circuit in a certain FPGA in an existing or user-defined serial communication mode in a burst short packet command mode. wherein the commandcomprises a read / write operation type, an operation address, read / write operation data and a check code, receiving the operation command from a serial interface control circuit in the FPGA, convertingthe operation command into a bus interface and an operation time sequence which are the same as those in the main FPGA, and performing read / write operation on an internal storage space. According tothe invention, high-efficiency, reliable, simple and strong-interactivity data communication between the processor and the plurality of FPGAs can be provided, and the universality is high.

The invention relates to a cover-opening mechanism for a container with a cover, in particular to a kettle cover-opening mechanism with a gentle opening speed, comprising a pot cover (10), a pot body (20), and a handle (30) connected to the pot body (20), The pot lid (10) is connected to the pot body (20) through a hinge mechanism (40), and the hinge mechanism (40) is arranged at the joint between the handle (30) and the pot body (20), characterized in that: the The rear end of the pot lid (10) is provided with a driving part (11), and the hinge mechanism (40) is provided with an elastic damping mechanism (50), and the damping mechanism (50) is provided with a contact part (51) and a mounting part (52) ), the damping mechanism (50) is fixedly connected to the pot body (20) through the installation part (52); The contact part (51) is always in contact with the drive part (11). The object of the present invention is to provide a kettle opening mechanism with a gentle opening speed, which has a simple structure and low cost.

The invention discloses a transformer substation power failure detection device and belongs to the field of power failure detection. The device comprises a moving seat, a cabin is rotatably mounted onthe top surface of the moving seat, the top surface and one side of the cabin are open, one end of a folding arm is hinged in the cabin, a C-shaped iron core is fixedly mounted at the other end of the folding arm, and an elastic sleeve made of non-magnetic materials sleeves the periphery of the C-shaped iron core. An electromagnetic coil is wound around the periphery of the elastic sleeve, a plurality of first wire rings made of non-magnetic materials are fixedly installed on the outer ring of the elastic sleeve, a plurality of second wire rings are fixedly installed on the folding arm, the two ends of the C-shaped iron core are fixedly connected with ends of first wire ropes respectively, and the first wire ropes penetrate through the corresponding first wire rings in sequence. And the other ends of the first ropes are fixedly connected with one end of the same second wire rope respectively. According to the device, the opening and closing of the C-shaped iron core are achieved through the stretching and retracting of the folding arm, the locking of a first wire wheel is flexibly achieved by controlling movement of a first strip-shaped block, a structure is prevented from being arranged on the C-shaped iron core, and the situation that the gravity center is not stable is avoided.

The invention relates to the technical field of emergency vehicles, in particular to an electric power engineering construction emergency vehicle which comprises a carriage and a telescopic support, the telescopic support can extend leftwards, a hydraulic cylinder is arranged at the free end of the telescopic support, and the hydraulic cylinder is connected with telescopic supporting legs througha piston rod extending downwards; a carrying opening is formed in the position, located above the telescopic support, of the side wall of the compartment, and a side door matched with the carrying opening is hinged to one side of the carrying opening; a guide groove is formed in the top end of the carriage and provided with a guide rod capable of penetrating through the carrying opening to extendleftwards. Through the arrangement of the telescopic support, the guide rod and the carrying device, the cable roller can be rapidly moved to a first-aid repair point outside the carriage in an automatic mode, the cable can be conveniently used during subsequent first-aid repair, the labor intensity is reduced, and therefore subsequent transition can be facilitated, and the first-aid repair efficiency is improved.

The invention belongs to the aviation field, and relates to an airborne power generator cooling device, which is characterized by comprising a power generator set (1), an oil pump (2), a pressure relief valve (3), a first filter (4), a lubricating oil air cooling system, a temperature bypass valve (6), a non-return valve (7) and a second filter (8). The invention provides an airborne power generator cooling device, which solves the problem of cooling of the power generator in an aircraft full flight envelope range, particularly, in a low-speed condition, and avoids bad influences on the performance of the engine and the engine compartment appearance design.

The invention relates to a separating method of hepatitis B virus. The hepatocyte surface HBV PreS1 binding protein is searched by an immuno-precipitation technology, the receptor gene is separated and identified by a protein time flight mass spectrum and a bioinformatics method, a candidate receptor gene is further cloned, the essence of the virus receptor is probed from the molecular level, and the relationship between the virus and the host cell receptor is disclosed, so that the separation and the identification can be realized.

The invention discloses a copyright information identification system and method. Through the system provided by the invention, the security information can be embedded into the design file through the information embedding device, so that the copyright information cannot be tampered with, and the online entry is not easy to be tampered with. tamper. Through the value-added service device, users can obtain in-depth subdivided domain knowledge through the online portal and perform online interaction.

The present invention provides a WiFi dual-band antenna array based on metal heat dissipation plates. The WiFi dual-band antenna array is characterized by comprising: a PCB; a frame which is in a central symmetry shape and is fixed on the PCB; an even number of metal heat dissipation plates which are symmetrically fixed on side edges of the frame, wherein the middle position of each metal heat dissipation plate is provided with a gap; insulating substrates filled in the gaps; an even number of antennas which have one-to-one correspondence with the metal heat dissipation plates and are fixed on the insulating substrates; and an even number of coaxial feeders which have one-to-one correspondence with the antennas and are fixed on the antennas, wherein the distance between the metal heat dissipation plate and the antenna is greater than a predetermined distance.

The invention belongs to the technical field of rectifier control, and particularly relates to a predictive direct power control method. Common current control bits are based on voltage directional current control of feedforward decoupling, PARK conversion and PLL calculation need to be carried out, calculation is complex, and parameters of a PI controller are difficult to set and are greatly influenced by system parameters. The invention provides the predictive direct power control method, which comprises the steps of establishing a mathematical model of a rectifier in a two-phase static coordinate system, and obtaining instantaneous active power and instantaneous reactive power of the rectifier in the two-phase static coordinate system; designing an index function by taking the minimum error of the instantaneous active power and the instantaneous reactive power as a principle, and deriving a rectifier reference voltage vector calculation formula by taking a power grid voltage vectoras a basic control vector; adopting space vector modulation to realize fixed switching frequency control; and meanwhile, correcting the instantaneous active power and the instantaneous reactive powerby adopting internal model control. The output waveform quality in a steady state is improved.

The invention relates to an electrothermal-driven in-plane bistable radio frequency microswitch belonging to the technical field of micro electromechanics. The electrothermal-driven in-plane bistable radio frequency microswitch comprises an electrothermal-driven mechanism, a mechanical locking mechanism and a signal conversion mechanism, wherein the electrothermal-driven mechanism is positioned under the mechanical locking mechanism; and the mechanical locking mechanism is connected with the signal conversion mechanism. The invention can realize the mechanical locking by using a pair of locking contacts, does not require continuous power consumption when keeping in a stable state, also fully develops the advantages of large driving force, high displacement power density and convenient integrated manufacture of an electrothermal driver and can be used as the actuation form of the mechanical locking structure of the switch. The switch has simple structure, foreseeable radio frequency (RF) characteristic, possibility of batch manufacture and practical application and suitability for integral manufacture.

The invention relates to an inertial safety device for an automobile door handle. The inertial safety device comprises a safety block device and a convex rod device, when the safety block device is atthe static position, a rotation path of a convex rod is receded by a groove in a safety block, and an automobile door can be opened; and after the safety block is subjected to impact action of high-speed inertia force to rotate, and when a pull handle drives the convex rod to rotate, the convex rod is blocked by the safety block, at the moment, the safety block is at the blocking position, and the automobile door is prevented from being opened. The blocking position range of the safety block is from the starting blocking position to the limit position, at the starting blocking position, the convex rod exactly cannot pass through the groove in the safety block when rotating, and the limit position is the rotation limit position of the safety block. The inertial safety device has the advantages of being high in functionality, safer, simple and compact in structure and low in cost.

The embodiment of the invention discloses an Internet of Things security authentication method and system. The system comprises terminal equipment and a security authentication module. The security authentication module is in communication connection with the terminal equipment, and when the security authentication module receives a security authentication request sent by the terminal equipment, security authentication can be carried out on the terminal equipment according to the security authentication request, and a security authentication result is sent to the terminal equipment. The security authentication module does not belong to the internal module of the terminal equipment. Therefore, based on the system, the cost of the terminal equipment is not increased, and the defects that inthe prior art, when safety authentication is conducted on the Internet of Things, the safety of a software authentication mode is poor, and the cost is increased due to the fact that the internal structure of the terminal equipment needs to be changed in a hardware authentication mode can be overcome at the same time.

A substation power fault detection device, belonging to the field of power fault detection, comprising a mobile seat, the top surface of the mobile seat is rotated to install a cockpit, the top surface and one side of the cockpit are open, one end of a hinged folding arm is hinged in the cockpit, and the other end of the folding arm is fixed Install the C-shaped iron core. The outer circumference of the C-shaped iron core is covered with an elastic sleeve of non-magnetic material. The outer circumference of the elastic sleeve is wound with an electromagnetic coil. The outer ring of the elastic sleeve is fixedly installed with several first wire loops of non-magnetic material. Several second wire rings are fixedly installed, and the two ends of the C-shaped iron core are respectively fixedly connected to one end of the first wire rope. One end of the same second cord. This device realizes the opening and closing of the C-shaped iron core through the expansion and contraction of the folding arm, and flexibly realizes the locking of the first wire wheel by controlling the movement of the first bar block, avoiding the setting of structures on the C-shaped iron core, and no center of gravity unstable situation.

The invention relates to the technical field of emergency vehicles, in particular to an emergency vehicle for electric power engineering construction, which includes a compartment and a telescopic bracket, the telescopic bracket can extend to the left and a hydraulic cylinder is provided at its free end, and the hydraulic cylinder passes through it The downwardly extending piston rod is connected with the telescopic support feet; the side wall of the compartment is located above the telescopic bracket and is provided with a port, and one side of the port is hinged with a matching side door; the top of the compartment is provided with a guide groove , the guide groove is provided with a guide rod that can extend leftwards through the delivery opening. Through the setting of telescopic brackets, guide rods and handling devices, the cable roller can be quickly moved to the emergency repair point outside the compartment in an automated manner, which is convenient for the use of cables during subsequent emergency repairs and reduces labor intensity. Therefore, it can also be beneficial Subsequent transitions improve the efficiency of emergency repairs.