882results about How to "Reduce points of failure" patented technology

The invention discloses a service link selection control method and device. The service link selection control method comprises the steps that a service link selection strategy sent by a coordinated device is received, wherein the service link selection strategy comprises the corresponding relation among first strategy contextual information, a first application type and a first service link, the first service link is a path composed of a forward device and a value added service device by which first service flow needs to pass, the first service flow comes from a user matched with the first strategy contextual information, and the type of the first service flow is the first application type; a PCRF unit receives the first strategy contextual information, and a service link selection control strategy is determined according to the first strategy contextual information and the service link selection strategy, wherein the service link selection control strategy comprises the corresponding relation between the first application type and the first service link; the PCRF unit sends the service link selection control strategy to a flow classifier. According to the service link selection control method, unnecessary devices can be prevented from being passed by.

The invention relates to a solar-powered ultra-high voltage line monitoring system, comprising a high-voltage side solar power supply, a high voltage line monitoring device, a low-voltage side solar power supply, a line monitoring host computer and a remote wireless intelligent monitoring system. The high-voltage side solar power supply and the low-voltage side solar power supply comprise solar batteries, rechargeable batteries and power management units; the high voltage line monitoring device and the line monitoring host computer comprise sensing units as well as data acquisition and recording units for detecting and processing field parameters of various lines; and the remote wireless intelligent monitoring system comprises a wireless communication unit and a monitoring system master station. The high-voltage side solar power supply, the high voltage line monitoring device, the low-voltage side solar power supply, the line monitoring host computer and the remote wireless intelligent monitoring system compose a field device which collects and records the running status and fault information of high-voltage lines through solar power and transmits the running status and fault information to the monitoring system master station through the remote wireless communication unit so as to provide real-time information for power line monitoring.

The invention discloses a full digitalized distributed intelligent servo driver which adopts a full digitalized DSP (Digital Signal Processor) + FPGA (Field Programmable Gate Array) structure. The intelligent servo driver provided by the invention integrates the functions of motion control, motor control and a simple PLC (Programmable Logic Controller) and can conveniently construct a motion control system without an upper computer motion controller (card). The intelligent servo driver can be used for controlling and driving a direct current brush (brushless) motor, an alternating current servo motor and a linear motor only through software configuration without changing hardware. The intelligent servo driver can realize the following operation modes: A. an RS232 network control mode; B. an RS485 distributed network control mode; C. an independent driver running mode without the upper computer; D. a pulse command running mode; and E. an analog signal running mode. The servo driver provided in the invention adopts a modularized structure, the same control module can be matched with driving modules of different power levels to form intelligent servo driving systems of different power levels. By utilizing the full digitalized distributed intelligent servo driver, a motion control system with the advantages of low cost, flexible system configuration, simpleness and convenience for operation, reliable performance and convenience of maintenance can be realized.

The invention discloses a stand-by safety chain monitoring and protecting device for a wind power generation control system, comprising a power supply, a cable-twisting switch, an engine-room vibration protection switch, a grid protection switch, a converter protection switch, an engine room and tower support emergent stop button, a distributed heartbeat signal monitoring switch, a rotary speed protection switch and a safety chain relay, wherein the power supply generates power signals and is respectively connected in series with the cable-twisting switch, the engine-room vibration protection switch, the grid protection switch, the converter protection switch, the engine room and the tower support emergent stop button, the distributed heartbeat signal monitoring switch, the rotary speed protection switch and the safety chain relay. The monitoring and protecting device adopts an active safety design, runs independent of a PLC system and monitors relevant signals at real time; and when incidents endangering the safety of a machine set occur, the monitoring and protecting device actively controls a pitch system to realize full feathering, thereby achieving the safe shut-down of the machine set.

The invention relates to a crystallizer for hydrolyzing carnallite. The crystallize comprises an inner cylinder, an outer cylinder, a mother solution distributor, a stirring paddle, a crystallizer cylinder body, a low-sodium carnallite inlet, a mother solution inlet, a decomposition liquid outlet and a product outlet. According to the crystallizer, the remaining time of low-sodium carnallite in a dissolving region can be prolonged, and the problem that low-sodium carnallite is not fully mixed and decomposed and then overflows to the bottom of the crystallizer from the upper part of the inner cylinder in the existing crystallizer is solved; and generated potassium chloride particles can grow above 0.2mm in particle size to ensure that solid potassium chloride is easily dewatered and dried, and washing water and heat energy required by drying are saved.

The invention provides a method and device for transmitting data between a main control panel and a service panel, wherein the method comprises the following steps of: obtaining user request data; sending the user request data to a kernel mode through a system calling communication mechanism; sending a user request message to a service panel kernel mode through a communication mechanism between kernel mode panels; establishing a netlink server when an operation type is a read operation; sending received response data to the netlink server side through a netlink client; returning to a user mode program by the netlink server side after receiving the response data; and analyzing the response data by the user mode program, and forming a user understandable form displayed to users. Due to adoption of the method provided by the embodiment of the invention, a main control panel user mode program can directly read data from a service panel kernel mode program effectively in real time.

The invention discloses an automatic cover opening device for a sample container. The automatic cover opening device comprises a rack, a clamping mechanism, a cover opening mechanism and a lifting mechanism, wherein the clamping mechanism is arranged on the rack and used for fixing and clamping the sample container and preventing the sample container from rotating and moving in the axial direction, the cover opening mechanism is arranged on the clamping mechanism and used for taking down a sample container cover, and the lifting mechanism is arranged on one side of the rack and used for driving the cover opening mechanism to ascend and descend. The automatic cover opening device further comprises a rotating mechanism and a waste cover recycling mechanism, wherein the rotating mechanism is connected with the cover opening mechanism and used for driving the cover opening mechanism to clamp and rotate the sample container cover, and the waste cover recycling mechanism is arranged on one side of the bottom of the rack and used for recycling the sample container cover taken down by the cover opening mechanism. According to the automatic cover opening device, clamping and rotating of the sample container cover can be achieved without two independent driving mechanisms, only a power-source-free cover opening head is arranged based on the sample container cover rotating mechanism, high cost is avoided, the number of fault points is reduced, and therefore the economic benefit is increased.

The invention discloses a hair-planting machine in the field of hairbrush machinery. A stander is provided with a main motor, a main shaft, a brush body workbench, a hair mouth movement mechanism and drilling mechanisms, wherein the main motor drives the main shaft to rotate; a hair mouth conjugate cam and drilling conjugate cams are all arranged on the main shaft; the upper ends of drilling conjugate rockers are meshed with the corresponding drilling conjugate cams, while lower ends are hinged with the upper ends of corresponding drilling connecting rods; the lower ends of the drilling connecting rods are hinged with the middle parts of corresponding drill stems; the drill stems are positioned in drill stem holes of corresponding drill stem seats and can slide up and down along the corresponding drill stem holes; the upper ends of each drill stem are provided with a drill stem driving wheel and are driven through belts by corresponding drill stem drive motors, while the lower ends are provided with a drill bit and are parallel to a hair mouth; two sets of drilling mechanisms are positioned on the two sides of the hair mouth respectively; a space between a first drill bit and the hair mouth is twice that between a second drill bit and the hair mouth; and drilling and hair planting are sequentially finished after a bottom plate of a brush body is fixed on the workbench without replacing a fixture and recalibrating positions. Therefore, time and labor are greatly saved and the production efficiency is improved.

The invention provides a POE switch testing device and a detection method thereof. The POE switch testing device comprises a temperature and humidity adjusting box; a POE switch system disposed in the temperature and humidity adjusting box; a POE system detection tool module connected with the POE switch system, arranged outside the temperature and humidity adjusting box, and used for detecting the power supply function of the POE switch system; an IP network camera connected with the POE switch system and arranged outside the temperature and humidity adjusting box; a temperature acquisition module connected with the POE switch system and used for detecting the temperature rise state of the POE switch system; and a PC arranged outside the temperature and humidity adjusting box, connected with the POE system detection tool module and used for detecting the data packet transmitting and receiving function of the POE switch system. The POE switch testing device solves the defects and the abuses of a conventional detection system using single AC voltage and power frequency by using different AC voltage and power frequency according to users at different regions.

Capture assemblies and compliant extension assemblies may be utilized for insertion into a nozzle of a liquid engine of a spacecraft. The capture assembly may include an apparatus such as a probe for insertion into the nozzle and an assembly at least partially enclosed in a forward portion of the probe. The assembly may include a plurality of actuated fingers for deploying outwardly from the probe when the probe is inserted into the nozzle. The compliant extension assembly may be at least partially enclosed in a housing connected to the capture assembly for axial movement of the probe. The compliant extension assembly may facilitate axial movement of the probe between a retracted position and an extended position, wherein the probe is extended forwardly, relative to the housing.

The invention discloses an intelligent variable-frequency motor and a water supply system. The intelligent variable-frequency motor comprises a casing, a stator, a rotor, a controller and a variable-frequency module, wherein the stator and the rotor are mounted in the casing; the rotor is provided with a rotating shaft; one end of the casing is an output end part, and the other end of the casing is a non-output end part; one end of the rotating shaft is an output end, and the other end of the rotating shaft is a non-output end; the output end of the rotating shaft extends out of the output end part of the casing; an electrical installation cooling cavity is formed in the output end part of the casing, and the electrical installation cooling cavity extends in the axial direction of the rotating shaft in the aspect of height; the rotating shaft is provided with a rotating shaft extending part matched with the electrical installation cooling cavity for extending; the controller and the variable-frequency module are arranged in the electrical installation cooling cavity. The overall size of the intelligent variable-frequency motor is reduced, the integration level of the intelligent variable-frequency motor is increased, and the reliability of the intelligent variable-frequency motor is improved.

The invention relates to a high-precision automatic internal cooling control system for an internal mixer. An air inlet fan and an air exhaust fan are variable frequency type fans; a fixed specified value is provided for the rotating speed of the air exhaust fan according to the production technique; three to six ultrasonic sensors are arranged on the circumference above a bubble cooling line; after a signal of distance between the ultrasonic sensors to the bubble is measured and acquired, the signal is transmitted to a controller; the actual value of the bubble breadth is calculated through the controller; the actual value of the bubble breadth is compared with the specified value of the breadth; PID operation is performed to the differential value through an amplifier; a control signal is output to an air inlet fan frequency converter; the frequency converter controls the rotating speed of the air inlet fan, so that the air inlet amount and the air exhaust amount are maintained in balance. The control system has the advantages that the operation and the use are simple, the maintenance is convenient, the running is stable and reliable, the control precision is high, a large amount of raw materials is saved for the users, and the production cost is greatly reduced.

The invention relates to a tower frame type combined driving oil extractor, which comprises a tower frame, a power system, a driving system, a control system, a balance weight box, a balance weight pulling rope, a driving rope, a polished rod eye and a guide wheel mechanism, wherein the driving system transmits power to a first transmission shaft after first reduction through a belt, a chain or combination of the belt and the chain, and drives a second transmission shaft after second reduction through a pair of gears, to drive the driving rope and the balance weight pulling rope which are rewound and fixed on a rope pulley, thereby a pumping rod and the balance weight box move up and down to complete operation of oil extraction. The driving system of the tower frame type combined driving oil extractor adopts the combined transmission form of gears and belts; the balance weight box adopts main and auxiliary multilevel adjustable balance weight; and the guide wheel is fixed on an operating platform through a rotating shaft, so that the tower frame type combined driving oil extractor has the advantages of simple structure, low cost, small number of fault points, convenient maintenance, suitability for various operating conditions of oil extraction, high transmission efficiency, low energy consumption and so on.

The present invention provides a kind of special combination machine tool repairing the large-scale unmovable overhead device; it possesses all kinds of function such as boring, milling and cutting and belongs to the machining device field. According to different machining object the present invention can assemble and unassemble different machine tool, many functions can be piled up. The machine tool structure adopts floor milling machine frame, and its circuit adopts one-drive-two frequency conversion control technique, to fit milling, boring and cutting device together. The machine tool can quickly move toward three-dimensional direction and lock any direction to make machining steady going. Moreover it has highly precision and simple machine structure.

The invention relates to an external circulating fermentation technique and a device thereof. The technique comprises the following steps that: step (A), materials flow into a fermentation tank of the device naturally by a material outlet of a dry-type fermentation device; step (B), the materials in the fermentation tank are pumped into a heat exchange device for heating, and after the temperature rises, the materials return into the fermentation tank for heat preservation and fermentation by a circulating pump; and step (C), the materials in the fermentation tank are fermented continuously so as to generate methane, and the methane slag and methane liquid are discharged from respective outlets. The device comprises the fermentation tank, the heat exchange device, an inner film, an outer film, the circulating pump, a control system and the like; the heat exchange device is arranged outside the fermentation tank; the fermentation tank is provided with a methane outlet valve and a material outlet valve, and the top part of the fermentation tank is provided with the inner film and the outer film in sequence; the upper part of the outer film is provided with a safety valve; a gas-filled cavity is formed between the inner film and the outer film; an air blower and a pipeline are communicated with the gas-filled cavity; the lower part of the tank is provided with a temperature sensor; and the control system is electrically connected with the temperature sensor and the heat exchange device. The invention is mainly applied in dry-type fermentation techniques of crop straws.

The invention relates to a wireless electricity-taking car and a road contactless power supply system in road traffic and transport means. In the invention, a power supply is not directly input through electric wire, while a contactless electromagnetic induction transformer arranged under a chassis of a car head indirectly absorbs electric energy in a special power supply cable embedded on a road and charges a storage battery on the car while driving the car to move. Particularly by adopting electric-magnetic-electric contactless power supply and electricity-taking technologies, a 10kV/15-40KHz high-frequency and high-voltage cable is embedded on a road surface to generate a high-energy vertical electromagnetic wave and an alternating magnetic field; and the transformer arranged under the car is applied with comprehensive induction of the high-frequency electromagnetic wave and the alternating electromagnetic field when the transformer is close to vertical distance of 150-450mm of the cable to induce resultant current in coils and restore magnetic energy into electric energy, thus providing advancing power for the car and charging the battery on the car, and guaranteeing the car can run for longer distance with sufficient electricity after leaving the power supply road. The technology of the invention thoroughly solves the difficult problems of limited energy storage and troublesome charging of the storage battery of the existing similar cars, and explores a new way for energy conservation and emission reduction of the cars.

The invention discloses a discharging method of a supporting capacitor of an electric automobile driving system and belongs to the technical field of circuits in order to solve the technical problem how to fast run out charges on the supporting capacitor. The electric automobile driving system comprises the supporting capacitor, inverse three-phase axles connected with the two ends of the supporting capacitor, and a three-phase motor connected with the inverse three-phase axles. The discharging method includes the steps that the electric automobile driving system is electrically processed; the inverse three-phase axles are driven so that the three-phase motor can be electrically connected with the supporting capacitor, and the supporting capacitor is discharged through internal resistance of the three-phase motor.