62results about How to "Improve availability and reliability" patented technology

A method for improving the availability and reliability of a computer clustering system having first and second servers that are connected to each other by a communication link and that each have an associated mass storage device. In one implementation, the method begins when the first server detects a loss of communication over the communication link from the second server to the first server that prevents the servers from communicating with each other. The first server then analyzes the communication link to determine if the communication link is functioning properly. If the communication link is functioning properly, then the first server continues operation, assuming a right to survive without communicating with the second server or with the mass storage device of the first server or with the mass storage device of the second server, and the first server services network requests that would otherwise be serviced by the second server.

The present invention concerns a method for mass-deleting a plurality of data records (20) from a database system (1), wherein the method comprises the following step performed during a processing of a mass delete request:a. creating (120) a data structure (40) comprising an identifier of each of the plurality of data records (20) to be deleted and inserting (130) a pointer to the data structure (40) into a transaction log(50) of the database system (1).

A system (and method) for linking wireless and land line communications media, includes a connector for connecting a communications media, and an indicator for alerting a user of the state of a connection. The connector automatically initiates a continuous reestablishment operation after the indicator announces a state of disconnection and in which the system provides a conferencing capability using the Internet. A handset to be used in voice communications includes a housing including a receiver and transmitter for connecting to a computer network, a plurality of wireless protocols for use with the transmitter, and a universal telephone port coupled to the housing for connecting to a universal telephone jack.

The invention relates to an intelligent intensive livestock and poultry monitoring system and an intelligent intensive livestock and poultry monitoring method. The intelligent intensive livestock and poultry monitoring system comprises a weight random-measuring device and a feed consumption measuring device. The weight random-measuring device is used for measuring weight data of an animal group dynamically and intelligently in real time and acquiring a group parameter of an average daily gain according to daily group weight difference. The feed consumption measuring device is used for acquiring dynamic real-time feed consumption parameters. The weight random-measuring device and the feed consumption measuring device respectively send weight information and feed consumption information to a data processing unit through a transmission network, and the data processing unit sends processed data to a data receiving terminal. The intelligent intensive livestock and poultry monitoring system and the intelligent intensive livestock and poultry monitoring method are capable of measuring maximum marginal income and real-time variation tendency of marginal cost dynamically and intelligently in real time and are extremely high in reliability and practicability.

The invention relates to pier paint spraying equipment with a remote control function. The pier paint spraying equipment comprises a fixing supporting base, a lifting mechanism, a central control mechanism, a paint spraying mechanism and a fixing mechanism. The paint spraying mechanism comprises two guide rails and a paint spraying assembly. The paint spraying assembly comprises a fixing block, a second motor, a second driving shaft, a driving gear and a nozzle. The fixing mechanism comprises first fixing assemblies and second fixing assemblies. Each first fixing assembly comprises a first mounting block, a fourth motor, a fourth driving shaft, a driving rod and a mounting shaft. Each second fixing assembly comprises a second mounting block. According to the pier paint spraying equipment with the remote control function, the two guide rails are mounted and fixed through the fixing mechanism and can be arranged on the periphery of a pier in a sleeving mode, meanwhile, through the paint spraying mechanism, reliable peripheral paint spraying of the pier can be achieved, in cooperation with the lifting mechanism, full-automatic paint spraying of the pier is achieved, and thus the practicability and reliability of the paint spraying equipment are improved.

The invention relates to a binding film for leakage detection of sulfur hexafluoride electric equipment, which comprises a plastic layer, a double-sided sticky tape and a plastic film. The binding film for leakage detection of sulfur hexafluoride electric equipment is characterized in that cylindrical plastic bodies are uniformly distributed and vertically prepared on an upper plane of the plastic layer at intervals; the double-sided sticky tape is spliced and fixedly arranged on the lower plane of the plastic layer; and the plastic film is spliced and fixed with the lower plane of the double-sided sticky tape. After the binding film provided by the invention is bound, a regular geometrical shape is formed; a clearance between the binding film and a detected part is a fixed value; and a binding cavity volume and a yearly air leakage rate of an air chamber are accurately calculated, so that the leakage condition of the air chamber is accurately judged and the unnecessary power-off overhaul caused by misjudgment and the unscheduled power outage caused by accident air leakage of the air chamber are avoided. The binding film provided by the invention has the advantages of low cost of raw materials, convenience in use and obvious economic and social benefits.

The present invention relates to a method for access control of a multimedia system to a secure operating system and a mobile terminal for implementing the method. The method includes the steps of: initiating an application access request for selecting a trusted application from a client application of a multimedia system to a secure operating system; making a decision as to whether the client application is a malicious application, and if not, proceeding to a next step, if yes, returning Selection Failure to the client application and performing an interrupt handling; sending the application access request from the multimedia system to the secure system; and acquiring, at the secure operating system, the trusted application based on the application access request and returning the trusted application to the multimedia system. The malicious accesses initiated by a malicious application to a trusted application in a securing operating system can be prevented without switching between systems, and the problem that a trusted application cannot be accessed due to malicious access can be avoided.

The invention discloses a fast Fourier ghost imaging method and system based on frequency domain modulation. The method comprises the steps of obtaining binary fringes through the frequency domain modulation, thereby generating gray fringes according to the binary fringes; collecting amplitude and phase of image spectrum through the gray fringes; restoring spectrum according to the amplitude and phase of the image spectrum; and obtaining an imaged image through Fourier inverse transform. According to the imaging method, the Fourier ghost imaging speed can be improved through a frequency domain modulation method, thereby realizing high-precise ghost imaging fast and improving the imaging practicability.

The invention provides a compressor, an air conditioner and an assembly method of the compressor. The compressor comprises a shell, a first cylinder module and a second cylinder module. The first cylinder module comprises a first cylinder, and is provided with a first exhaust channel; a first end of the first exhaust channel communicates with the first cylinder, and a second end of the first exhaust channel communicates with an accommodating cavity; the second cylinder module comprises a second cylinder; the second cylinder is arranged near the first cylinder; the second cylinder module is provided with a second exhaust channel; the second exhaust channel and the first exhaust channel are arranged in a relatively independent manner; a first end of the second exhaust channel is connected with the second cylinder, and a second end of the second exhaust channel communicates with the accommodating cavity; and when the first cylinder is located in a working state, the second cylinder is located in a working state or an idle state. The performance and the reliability of the compressor are improved.

A method for mass-deleting a plurality of data records from a database system includes creating a data structure that includes an identifier of each of the plurality of data records to be deleted and inserting a pointer to the data structure into a transaction log of the database system.

The invention relates to an intelligent backpack which is convenient to carry and has a night lighting function. The backpack comprises a backpack body, straps, a handle, an illumination mechanism anda dragging mechanism, the illumination mechanism comprises a containing assembly and an adjusting assembly, and the dragging mechanism comprises a fourth motor, a first gear, a second gear, a telescopic frame, a sliding block, a supporting plate, moving wheels and two moving assemblies. According to the intelligent backpack which is convenient to carry and has the night lighting function, throughthe illumination mechanism, a floodlight on the backpack can be adjusted and protected, compared with an existing intelligent backpack, an illumination function is added, hands are freed, so that walking at night is more convenient and safer, through the dragging mechanism, the backpack can be moved on the ground, which further saves energy, is easy and convenient to carry, can avoid abrasion andscratch of the bottom of the backpack, has a certain buffer and damping effect and protects articles in the backpack, and the practicability and reliability of the intelligent backpack are greatly improved.

A defect type identifying method for a GIS oscillation impulse voltage withstanding test forms a pulse waveform-time series by extracting a single pulse time-domain waveform and a corresponding discharge time by using a custom pulse extraction window; uses an equivalent periodic folding algorithm to form an equivalent phase-peak distribution chart according to the pulse waveform-time series; uses a statistical operator to extract feature parameters of the equivalent phase-peak distribution chart to form a discharge fingerprint, and processes the discharge fingerprints of different discharge defects to form a discharge fingerprint database; uses a BP neural network to train the discharge fingerprint database to form a discriminant function F; and uses the discriminant function F to calculate the discharge fingerprint of a defective GIS specimen to be discriminated, and identifies the type of a defect. The method can effectively identify the type of defects of partial discharge under an oscillation impulse voltage, and the reliability and practicability are high.

A fuel cell system has at least one fuel cell unit for generating electrical energy, a unit for storing or dispensing electrical energy, an electrical consumer for consuming electrical energy, a diagnostic unit for ascertaining a functional capability of the at least one fuel cell unit during a diagnosis phase, and a control unit for determining an electrical power generated at least during the diagnosis phase by the at least one fuel cell unit.

The invention provides an optical receiving module and an optical communication device, and relates to the field of optical signal processing technology. The optical receiving module comprises: a first substrate; an array waveguide grating arranged on the surface of the first substrate, wherein a V-shaped groove is formed in one side of the array waveguide grating away from the first substrate; and a photoelectric detector, wherein the photoelectric detector is arranged on one side of the array waveguide grating away from the first substrate and opposite to the V-shaped groove to reduce lightsignals output from the V-shaped groove and convert the light signals into electric signals. As the V-shaped groove is formed in the array waveguide grating, the problem that an inclined plane needs to be cut on the output end of the array waveguide grating to reflect the light signals to the photoelectric detector, resulting in edge breakage of the output end of the array waveguide grating in related art, is solved.

The invention discloses a power distribution network current differential protection device based on an FPGA. According to the invention, the FPGA module is introduced, network communication is realized by adopting a hardware TCP / IP protocol stack based on an FPGA, high-speed sampling, packet sending and receiving unpacking of the electric quantity are realized by utilizing the FPGA, real-time andhigh-speed data interaction between the current differential protection devices is realized, the response time from the electrical quantity acquisition and packaging of the local side to the sendingof the slave network interface module in the device is less than 1 millisecond, and the received opposite side data is unpacked and analyzed within 1 millisecond, so that the problems of unreliable and untimely action of current differential protection caused by long delay and large jitter of data transmission for protection due to a wireless communication mode based on a software TCP / IP protocolstack are avoided, the action performance of the current differential protection based on the wireless communication mode is improved, and the reliability and the practicability of the current differential protection are improved.

A signal detection system for a GIS oscillation and impact withstand voltage test, comprising an oscillation and impact high-voltage power supply electrically connected to a GIS test product, an impact high-voltage control unit electrically connected to the oscillation and impact high-voltage power supply, and electrically connected to the oscillation and impact high-voltage power supply and the GIS test product The capacitive voltage divider, the signal detection module electrically connected to the GIS test product, the acquisition and storage device electrically connected to the capacitive voltage divider and the signal detection module, and the main control unit electrically connected to the impact high voltage control unit and the acquisition and storage device display device. The invention realizes comprehensive detection and collection of partial discharge data under oscillation impulse voltage, and has high reliability and practicability.

The invention relates to the technical field of detection equipment, in particular to nut thread detection equipment. The nut is automatically detected, physical power and time during manual detectioncan be effectively saved, the automation degree of nut detection is improved, the detection time of the nut is shortened, the working efficiency is improved, meanwhile, when the nut drives the firstrotating shaft to rotate, the force is kept consistent, the stress consistency of the nut is effectively improved, the detection accuracy is improved, and the practicability and reliability are improved. The equipment comprises a workbench, two groups of supporting legs, a central control box, a detection screw, a coupler and a first rotating shaft, the two sets of supporting legs are installed onthe lower left side and the lower right side of the workbench respectively, the center control box is installed on the right side of the top of the workbench, the detection screw is located above theworkbench, the left end of the detection screw is conical, the coupler is installed on the right side of the detection screw, and the first rotating shaft is installed on the right side of the coupler.

The invention relates to a novel infusion device based on Internet of Things. The novel infusion device comprises a fixing seat, a connecting rod vertically arranged under the fixing seat, an infusion mechanism arranged at the bottom of the connecting rod and an extending-retracting mechanism arranged on the connecting rod, wherein the infusion mechanism is in driven connection with the extending-retracting mechanism and comprises two infusion assemblies, and each infusion assembly comprises a connecting line, a first fixing support, a cross rod, a first connecting shaft and a fixing block. The novel infusion device based on the Internet of Things can ensure that a user conducts real-time control on the infusion device through a wireless communication module, and accordingly the intelligence and practicability of the device are improved. Not only that, rotation of driving wheels and lifting of a housing on the connecting rod are controlled through a driving motor and a spiral screw mechanism, the putdown and retraction of the cross rod are achieved, meanwhile the putdown and retraction of hooks can be achieved through a second connecting shaft, accordingly free putdown and retraction of the whole infusion device are achieved, and the reliability and practicability of the infusion device are improved.

The invention relates to a compressed air purification system with monitoring function based on the Internet of Things, comprising a central control device and a purification mechanism electrically connected with the central control device, wherein the purification mechanism comprises an air compressor, a first filter mechanism, a Refrigeration dryer, second filter mechanism, storage mechanism, first valve and third filter mechanism, the compressed air purification system with monitoring function based on the Internet of Things performs real-time on the refinement degree of compressed air in each link through the air quality sensor At the same time, the remote real-time monitoring of the system by the staff is ensured through the wireless communication module, which improves the practicability and reliability of the system; in the working power supply circuit, the use of the high power gain of the field effect transistor VT2 can simplify the circuit. At the same time, a sufficiently large current can be output, which improves the practicability of the working power supply circuit and the practicability of the adopted device.

The invention provides a heat exchange system and a water heater with the same. The heat exchange system comprises an exhaust opening of a compressor, wherein the exhaust opening communicates with a first inlet end of a first heat exchanger, a first outlet end of the first heat exchanger communicates with a first inlet end of a second heat exchanger, the first outlet end of the first heat exchanger communicates with an inlet end of a third heat exchanger, an outlet end of the third heat exchanger communicates with a first inlet end of a gas-liquid separator, and a first outlet end of the gas-liquid separator communicates with an intake opening of the compressor; and a caterpillar pipe and a valve structure are arranged on a pipeline for connecting the second heat exchanger and the third heat exchanger, and the caterpillar pipe and the valve structure are arranged in parallel. By arranging the caterpillar pipe and the valve structure side by side, the low-temperature back-flowing and high-temperature overheating problems of the heat exchange system can be prevented, the liquid impact condition of the compressor is effectively avoided, the practicability and reliability of the heat exchange system are effectively improved, and the use experience of the user is improved.

The invention discloses a heavy oil hybrid power cooling system based on a variable pitch propeller. The system involves a pitch control device, a control platform and a main controller which is in wireless connection with the control platform; the pitch control device comprises the variable pitch propeller, a controller and pitch collectors; the pitch collectors are installed on the two sides ofpitch blades of the variable pitch propeller; the pitch collectors are used for acquiring the real-time pitch value of the variable pitch propeller; the pitch collectors are electrically connected with the main controller; the main controller is used for controlling the pitch value of the variable pitch propeller; and the system is cooled by controlling the output torque of the variable pitch propeller to change the cooling wind power of the variable pitch propeller.

The invention provides a rate control method for multi-antenna signal which includes steps: a receiver terminal determines detection order of each transmitting antenna signal; equivalent signal-to-noise ratio of each transmitting antenna is calculated and is feed back to a transmitter terminal; the transmitter terminal determines encoding and modulation parameter of each antenna according with equivalent signal-to-noise ratio feed back by the receiver terminal, encodes and modulates to date stream and transmits; the receiver terminal detects received date stream and processes disturbance recovery, disturbance cancellation. The method provided by the invention takes full consideration of error propagation in equivalent signal-to-noise ratio calculation, thereby, equivalent signal-to-noise ratio precision is increased, validity and reliability of the transmitter terminal in encoding and modulation parameter selection are improved, and system performance is increased. At the same time, calculation complexity of the method has a much smaller increase, and prior system frame is not changed basically, thus, the method has more better practical value.

The invention provides a pressure breakage device which is applied to a liquid circulation system and realizes a pressure reduction and automatic switching function. The invention solves the problem that a relief valve sold in the market has unideal shutdown, no exhaust function, complex structure and low reliability. A highrise building no-water tank direct connection heat supply system belongs to an open typed system which can not be applied to a deoxidized heat supply system. The key points of the invention are that the invention is a cross-shaped four-way pipe; the two pipes in the horizontal direction are respectively a water inlet pipe and a water outlet pipe; the internal chambers of the two pipes are changed from gradual reduction shape to gradual enlargement shape; an upper pipe and a lower pipe in vertical direction are respectively a low-pressure driving pipe and a high-pressure driving pipe; the lower end of the high-pressure driving pipe is a taper; the internal chamber wall of the upper end of the low-pressure driving pipe is provided with a lug boss which plays a position limit role; the internal chambers of the high-pressure driving pipe and the low-pressure driving pipe are provided with adjusting columns; the column body is cut with a transverse through hole; the position of the transverse through hole is that when the adjusting columns move upwards to the position limit lug boss, the water inlet pipe and the water outlet pipe are communicated by the transverse through hole.

The invention relates to the technical field of breeding equipment, in particular to a dual-purpose broiler brooding and breeding device. By removing excrement, the cleaning speed is increased, and the working efficiency is improved; meanwhile, excrement removal is complete, excrement residues are reduced, and the cleaning effect is improved. The device comprises a cleaning shovel and two power devices, and the left side and the right side of the front end of the cleaning shovel are connected with the rear ends of the two power devices respectively. Each power device comprises a first mountingplate, a first supporting plate, a second supporting plate, a supporting frame, a first motor, a first transmission shaft, a first speed reducer, a second transmission shaft and a first bevel gear, wherein the first mounting plate is located in front of the cleaning shovel; the right side of the top end of the first mounting plate is connected with the bottom end of the first supporting plate; the rear side of the top end of the first mounting plate is connected with the bottom end of the second supporting plate.

A liquid-cooled charging equipment with multiple charging connector assemblies includes a recirculating cooling apparatus, a plurality of charging connector assemblies, a plurality of coolant supply pipes, a plurality of coolant return pipes, a plurality of valves, and a control unit. The recirculating cooling apparatus has an outlet side and an inlet side. Each charging connector assembly includes a charging connector and a charging cable having an inlet end and an outlet end. Each valve is correspondingly disposed in each coolant supply pipe. The control unit is coupled to the valves and the charging connector assemblies. When the charging connector assemblies are in operation of charging, the control unit opens the valves corresponding to the charging connector assemblies to allow the low-temperature coolant provided by the recirculating cooling apparatus to flow through the coolant supply pipes to cool the charging connectors.

The invention discloses a series arc fault intelligent circuit breaker scheme design based on a machine learning algorithm. The circuit breaker is used for single-phase low-voltage power supply linesfor residents, industry and commerce. A current signal of a circuit is acquired by a sensor. Then zero-zone proportion and peak value coefficient characteristics of the signal are extracted from a time domain, inter-harmonic content characteristics of the signal are extracted from a frequency domain, and power spectrum distribution and harmonic power proportion characteristics of the signal are extracted from an energy domain; and then waveforms are classified according to a kurtosis coefficient and a specific inter-harmonic content, the extracted characteristics of the classified waveforms are calculated by adopting a corresponding intelligent algorithm, whether a series arc fault occurs in the circuit or not is determined, and a fault branch is located. The intelligent algorithm and parameters are obtained by training a machine learning algorithm with a sample and then extracting a rule between the parameters and an algorithm result, and are solidified in a microprocessor. Accordingto the scheme, the judgment accuracy of the arc fault circuit breaker is improved, fault branch positioning can be achieved, an electrical fire problem is solved, and the practical value is achieved.

The invention relates to a two-feet-positioning-based motion trail acquisition method which comprises the following steps: by taking two feet as reference points alternatively, detecting the direction and step length of each motion step of the other foot through RSSI, thus obtaining the motion trail. According to the two-feet-positioning-based motion trail acquisition method provided by the invention, the positioning process of a to-be-positioned article can be completed only by wearing a signal transceiver on a wearer under the condition of not utilizing external equipment. Through the two-feet-positioning-based motion trail acquisition method, the trail tracking and navigation positioning when no GPS signal exists indoors and outdoors can be effectively solved, and the positioning reliability and the positioning practicability can be greatly enhanced.

The invention relates to the technical field of mobile communication base station auxiliary equipment, and discloses a communication base station dehumidification unit device capable of avoiding highenergy consumption and heat accumulation, the communication base station dehumidification unit device comprises a shell, a cover plate is rotatably connected to the top end of the shell, a bracket isfixedly connected to the interior of the shell, and a water absorption ball is movably connected to the interior of the bracket. A pipeline is arranged in the shell, a metal electrode is arranged at the bottom end of the pipeline, a through hole is formed in the bottom end of the shell, a connecting plate is arranged at the bottom end of the through hole, and a first connecting shaft is fixedly connected to the interior of the connecting plate. According to the communication base station dehumidification unit device capable of avoiding high energy consumption and heat accumulation, through connection of the shell and the through holes, the advantage that internal components are prevented from being damaged due to the influence of the external environment is achieved, and the problem that in the prior art, due to the fact that the humidity of a mobile communication base station is large, base station operation is affected is solved; practicality and reliability are greatly improved, energy consumption is reduced, and energy conservation and environmental protection are achieved.