56results about How to "Improve overload" patented technology

The invention provides a beam-film four-land structured micro-pressure high-overload sensor chip comprising a silicon substrate, wherein four mass blocks, four single beams and a cross beam are processed on the silicon substrate. The mass blocks are connected with the silicon substrate through the single beams, and are interconnected by virtue of the cross beam; a film is arranged in a space defined by the silicon substrate, the mass blocks, the single beams and the cross beam; the back of the silicon substrate is bonded with Pyrex7740 glass; the backs of the mass blocks are thinned, so that a gap is reserved between the mass blocks and the Pyrex7740 glass, and simultaneously, four anti-adsorption electrodes on the Pyrex7740 glass are inserted into the bonding area; a cavity formed between the film, the mass blocks and the Pyrex7740 glass is vacuumized; four piezoresistor bars are interconnected to form a semi-open loop Wheatstone bridge on the front of the silicon substrate; the whole rigidity is improved by using the four single beams and the cross beam; the stress is concentrated again; and the beam-film four-land structured micro-pressure high-overload sensor chip has the characteristics of high sensitivity and linearity, and simultaneously can resist 500 times of high overload.

The invention relates to a combined type multi-tooth stator iron hybrid field switch flux motor which is characterized by comprising a stator core tooth module, a stator core yoke module, a rotor core, an armature winding, magnetic steel, a field winding and the like. The stator core tooth module is of a multi-tooth structure; the magnetic steel, the field winding and the armature winding are arranged on the stator core tooth module; the stator core tooth module and the stator core yoke module are in sequential combined arrangement along the circumference direction to form a switch flux motor stator; a switch flux motor rotor is only provided with a rotor iron core. The multi-tooth type structure can reduce output torque pulse of the motor; by controlling the direction and the amplitude of the input current of the field winding, motor overload and flux weakening raising speed can be adjusted; a cooling liquid circulation system is arranged to perform uniform cooling and heat radiation on the motor, so that the stability and robustness of the motor are improved, and the combined type multi-tooth stator iron hybrid field switch flux motor has obvious advantages when being applied to the field of servo direct driving of electromechanical devices.

The invention discloses a hydraulic rotary braking energy-saving control system. The hydraulic rotary braking energy-saving control system comprises an oil tank, an engine, a first variable pump, an electromagnetic directional control valve, a three-position four-way directional control valve, a first one-way valve, an energy accumulator, a second variable pump, a first motor, a first pilot operated directional control valve, a second one-way valve, a rotary motor, a second overflow valve, a fourth one-way valve, a second pilot operated directional control valve, a third pilot operated directional control valve, a third one-way valve, a clutch, a speed increasing gear, a coupler, a generator, a transformer, a storage battery, a motor-operated switch, a third overflow valve, a fifth one-way valve, a fourth pilot operated directional control valve, a controller, a first overflow valve and a motor. On the basis of an energy recycling device, a novel energy storage mode is added for the hydraulic rotary braking energy-saving control system, so that energy of high braking torque generated during rotary braking every time is converted, and is stored in the storage battery in the form of electric energy, and the energy recycling efficiency in the rotary braking process can be high.

In order to ameliorate the overload at an overloaded network node that is discarding some of the SMSs it is receiving, when a node is overloaded with received SMSs, it sends a message to the nodes from which it is receiving SMSs of that fact and includes a parameter indicating the extent to which it is overloaded. That parameter, for instance, may be the percentage of SMSs that it is receiving that are being discarded. With this information, the sending node can determine a percentage of the pending SMSs during such conditions that will help remove the overloaded node from the overload condition more quickly. Furthermore, the network protocol may be adapted to include a priority parameter in SMSs. Then, when an SMS sending node knows that a node to which it is sending SMSs is overloaded, the sending node may decide which SMSs to send to the overloaded node based on such priority information.

The invention relates to the technical field of wind power, and discloses a wind turbine yaw control method and device and a wind turbine. The wind turbine yaw control method comprises the steps thatwhether the wind turbine meets the yaw condition or not is judged; if yes, a hydraulic brake is controlled to be released; and within the first preset time period since the hydraulic brake is released, if the pressure of the hydraulic brake is lowered to the first preset yaw pressure or below, a yaw driving part is started. By adopting the control method of the embodiment of the invention, the pressure of the hydraulic brake can be lowered to the first preset yaw pressure or below, and the yaw driving part is started. By reasonably setting the first preset yaw pressure, the problem that the yaw driving part is started when the hydraulic braking force is large, and thus, the yaw driving part is overloaded can be solved; and in addition, the problem that after the braking force is reduced tothe lower level, the yaw driving part cannot be started in time, and wind turbine yaw drifting is caused can be solved. The wind turbine yaw control device and the wind turbine are both used for achieving the yaw control method.

The invention discloses an electronic device with low stress and high overload resistance and a packaging method of the electronic device. Protection flexible glue is dropwise added on the inner sideof a bottom plate of a packaging tube shell, and pressing is performed to form lower protection flexible glue and side protection flexible glue; the protection flexible glue is dropwise added on the inner surface of a packaging cover plate, and pressing is performed to form patterned upper protection flexible glue; then a bonding piece glue point is dropwise added to the lower protection flexibleglue to enable an electronic chip to be attached to the packaging tube shell, and it is ensured that there is no direct mechanical connection between the electronic chip and the inner side surface ofthe packaging tube shell and between the electronic chip and the packaging cover plate; then metal wires are bonded, and finally, covering of the packaging cover plate is performed. By virtue of the upper protection flexible glue, the lower protection flexible glue and the bonding piece glue point, external force impact in the Z direction can be buffered jointly, so that the electronic chip is protected from collision with the packaging cover plate or the bottom plate of the packaging tube shell; and by virtue of the side protection flexible glue, external force impact in the X-axis directionand the Y-axis direction can be buffered, so that the electronic chip is protected from collision with the side surface of the packaging tube shell, thereby enabling the electronic device to resist high overload and to be relatively low in packaging stress.

The invention discloses a low-voltage control device applied to a low-voltage distribution network and aiming to keep the obvious effect of series compensation voltage regulation and the continuously adjustable output capacity of parallel compensation and to solve a low-voltage problem. The low-voltage control device comprises a series compensation module and a parallel compensation module which are connected in series with each other between a power supply and a load. The series compensation module comprises a series capacitor bank (C3) and a bypass circuit which are connected in parallel. The series capacitor bank (C3) comprises a plurality of series capacitors connected in parallel. The bypass circuit is a two-stage bypass circuit. The parallel compensation module comprises a plurality of parallel capacitors connected in parallel each of which is connected in series with a combination switch. One end of each parallel capacitor is grounded.

The invention relates to a dry-type transformer blade-free cooling fan device and an application method thereof. The dry-type transformer blade-free cooling fan device comprises a dry-type transformer, a blade-free cooling fan, an insulated infrared temperature measurement sensor and a control module. The blade-free cooling fan is arranged near to the dry-type transformer, faces a winding of the dry-type transformer directly and is used for blowing air to cool the winding of the dry-type transformer. A temperature measurement probe of the insulated infrared temperature measurement sensor is arranged near to the winding of the dry-type transformer, faces the center of the winding of the dry-type transformer and is used for measuring the temperature of the winding of the dry-type transformer in a non-contact mode. The blade-free cooling fan is connected to the control model through a control cable. The insulated infrared temperature measurement sensor is connected to the control module through an infrared optical fiber sensing data line. The dry-type transformer blade-free cooling fan device and the application method thereof have the advantages that forced air-blowing cooling for the dry-type transformer is controlled automatically by the infrared non-contact temperature measurement, sensing and control technology, so that operational copper and iron losses of the dry-type transformer are reduced effectively, and overload and short-circuit resistance capacities of the device are improved effectively.

The invention relates to a cooling device for a dry-type transformer. The cooling device comprises a cooling chamber, a refrigerating system and a control module. The cooling chamber is divided into an upper shell and a lower shell, round holes for a high-voltage sleeve and a low-voltage sleeve to penetrate through are formed in the top of the upper shell, and the portions, penetrating out of the round holes, of the sleeves are sealed tightly by sealing rings; the dry-type transformer is fixed in a cavity of the cooling chamber, a refrigerant medium circularly flows in the cooling chamber, and refrigeration cycle is performed on the refrigerant medium by the refrigerating system, so that the requirement for cooling the dry-type transformer through the refrigerant medium is met; an inlet valve for the refrigerant medium to enter is installed on the lower portion of the side face of the cooling chamber, an outlet valve for the refrigerant medium to exit is installed on the upper portion of the other opposite side face of the cooling chamber, and a temperature sensor is installed on the upper portion of the side face of the cooling chamber; the control module is electrically connected with the temperature sensor and a refrigeration compressor in the refrigerating system and automatically controls the refrigeration compressor to work according to on-line temperature valves measured and transmitted by the temperature sensor.

The invention discloses a software-defined heterogeneous Internet of Vehicles access management and optimization method, which comprises the following steps of: 1, designing an SDN-based vehicle communication network architecture to realize global management of a vehicle network; 2, setting a local database on a data plane, collecting vehicle information, and storing a management strategy issued by the control plane; 3, uploading the collected vehicle data to a control plane, and calculating vehicle network performance indexes on the control plane; and 4, determining the weight and benefit function of each performance index, finally determining the selection of an access network mode through adopting an evolutionary game method, and issuing the access network mode to a vehicle of the dataplane. According to the software-defined heterogeneous Internet of Vehicles access management and optimization method, the vehicle access mode is flexibly selected based on different service requirements, so that the network service quality of the vehicle heterogeneous network is optimized according to the requirements of the required service, the network performance is greatly improved, and the service quality of the vehicle communication network is improved.

The invention relates to a switching circuit, system and method for the control power of a battery swap station, a controller and a medium. The switching circuit comprises a first power supply circuitand a second power supply circuit, wherein the input end of the first power supply circuit is connected to a first transformer, and then is successively connected with a first circuit breaker, a second circuit breaker and a control power output end; the control power output end is used for outputting electric energy for powering each device of the battery swap station; the input end of the secondpower supply circuit is connected with a second transformer, and then is successively connected with an electromagnetic contactor and a switching output end; the switching output end is connected tothe control power output end; the normally open contact of the first circuit breaker is connected in series with the no-voltage release coil circuit of the second circuit breaker; and the normally closed contact of the first circuit breaker is connected in series with an electromagnetic contactor coil circuit. The switching circuit automatically, safely and reliably switches the control power of an electric vehicle battery swap station at low cost.

The invention discloses a hydroxyapatite/saccharomycetes biological hybrid material as well as a preparation method and application thereof, and relates to the field of tumor treatment, and the preparation method comprises the following steps: vibrating saccharomycetes in a liquid culture medium overnight, and dispersing in deionized water to obtain a saccharomycetes dispersion liquid; and respectively taking a Ca (NO3) 2 solution and an ammonium phosphate solution with the same volume, mixing, adding the yeast dispersion liquid, stirring, and centrifugally cleaning to obtain the HA/Yeast biological hybrid material. On the basis of the HA/Yeast biological hybrid material, tumor calcium overload and tumor immune collaborative treatment can be realized, and the problem that the tumor killing effect of a single way is relatively weak is solved. The HA/Yeast nano-particles disclosed by the invention are simple in synthesis method, good in dispersity and uniform in size; the yeast can achieve tumor specific targeting by tending to an acid environment, H2S is generated through fermentation to enhance tumor calcium overload, meanwhile, tumor immunotherapy is activated, and finally tumor synergistic killing is achieved.

The invention relates to a dry-type transformer cooling device with the intelligent frequency conversion function. The dry-type transformer cooling device comprises a frequency conversion refrigeration compressor, a cooling chamber, a refrigeration system and a control module, wherein the work of the frequency conversion refrigeration compressor can be controlled by automatically controlling the frequency. The cooling chamber is divided into an upper shell and a lower shell. The top of the upper shell is provided with circular holes through which a high-voltage sleeve and a low-voltage sleeve of the dry-type transformer can penetrate respectively. The parts, penetrating out of the circular holes, of the sleeves are tightly sealed through a seal ring. The dry-type transformer is fixed in a cavity of the cooling chamber. Cold media flow in the cooling chamber in a circulation mode. The refrigeration system conducts refrigeration circulation on the cold media to meet the requirement that the dry-type transformer is cooled through the cold media. The lower portion of the side face of the cooling chamber is provided an inlet valve for cold media feeding, and the upper portion of the other opposite side face of the cooling chamber is provided with an outlet valve for cold media discharging. The upper portion of the side face of the cooling chamber is further provided with a temperature sensor. The control module is electrically connected to the temperature sensor and the frequency conversion refrigeration compressor. The control module controls work of the refrigeration compressor automatically.

The invention relates to a medical resource allocation method based on user behavior analysis and a cloud computing server. By applying the scheme of the invention, the acquired user behavior data ofthe user terminal is analyzed, so that the behavior characteristic analysis of the user is realized, and the detection of the medical information and the generation of the current medical guidance information are further realized. Furthermore, by sending the doctor-seeing request information corresponding to the current doctor-seeing guidance information to the current data analysis center corresponding to the doctor-seeing place information in the current doctor-seeing guidance information, whether a hospital corresponding to the current data analysis center can accept the current doctor-seeing guidance information or not can be determined in advance, so that the user is treated. If yes, the current medical guidance information is pushed to the corresponding user terminal; and if not, thecurrent medical guidance information is modified. Thus, the medical resources can be allocated quickly and accurately, and the problem of hospital overload caused by improper allocation of the medical resources is effectively solved.

The invention provides a weighing sensor assembly, which comprises a force receiving portion, a weighing unit, a force transmitting member and a stop portion. The weighing unit comprises a movable portion, a fixed portion, and a parallel guide assembly which connects the movable portion and the fixed portion. The force transmitting member comprises a first installing portion used for installing the force receiving portion, a second installing portion used for being installed to the movable portion, and a parallel guide connecting assembly which connects the first installing portion and the second installing portion. The first installing portion can move upwards and downwards parallelly in a vertical direction relative to the second installing portion under the action of a loading force. The force transmitting member is of an integral structure. The stop portion is used for preventing the first installing portion of the force transmitting member from further moving downwards during overload, so as to achieve the overload protection effect. The invention further provides an electronic balance comprising the weighing sensor assembly. The weighing sensor assembly and the electronic balance provided by the invention are simple in structure and easy to install, and can realize the function of preventing overload.

The invention discloses a micro-pressure sensor chip and a preparation method thereof. The sensor chip mainly comprises a stress film, a substrate, a piezoresistive strip, a metal lead, an overload protection assembly and the like. According to the specific structure, a stress film with a stress adjusting groove and a stress concentration groove is manufactured on a chip structure substrate. Fourstress concentration grooves are evenly distributed in the edge of the stress film, the four piezoresistor strips are arranged between the ends of every two adjacent stress concentration grooves, andthe piezoresistor strips are connected into a semi-open-loop Wheatstone bridge through the metal leads. The gap between the cross support beam and the bump of the chip back cavity further improves thestress concentration effect at the piezoresistor strip. The main preparation process comprises the following steps of: manufacturing a piezoresistor strip for a cleaned SOI silicon wafer, manufacturing an ohmic contact region by adopting P-type heavy doping, manufacturing a metal lead and a bonding pad, etching a stress concentration groove and a stress adjustment groove by a dry method, manufacturing a back cavity structure of a chip, and finally bonding a manufactured chip structure substrate with anti-overload glass.

The invention relates to a high-sealing bus duct. The high-sealing bus duct comprises an outer casing and a plurality of conductive rows arranged in the outer casing, the outer side of each conductiverow is coated with an insulation layer, the conductive rows are arranged at intervals, one ends of the conductive rows are provided with grooves, the other ends of the conductive rows are provided with bumps cooperatively installed with the grooves, the two ends of the outer casing are provided with connection studs, and when two bus ducts are connected, the connection studs on the two bus ductsare connected through a threaded sleeve. The grooves and the bumps are cooperatively installed to have a connection effect, the two ends of the outer casing are provided with the connection studs to allow the two bus ducts to be in threaded seal connection so as to avoid dust accumulation at the connection of the wire row and effectively prevent insects or small animals from touching the connection to cause short circuit.