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 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.

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 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 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 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 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.