101results about How to "Raise the upper limit" patented technology

The invention discloses a multi-level acceleration method of flow-based biological sequence database search, which is to accelerate the search speed of a biological sequence database on the premise of ensuring search accuracy and relatively low cost. The technical proposal is that a cluster system composed of a plurality of personal computers shall be created firstly, and a master control node machine is assigned; the master control node machine distributes the database sequence and stores into each node machine in the cluster system, so as to fill and rearrange an inquiry sequence, and distribute the inquiry sequence to all the node machines in the cluster system; each node machine executes the search task in parallel, so as to be responsible for the completion of search tasks of the inquiry sequence in a local database sequence; the master control node machine collects, summarizes and outputs the results of parallel search tasks on all the node machines. The invention makes the search tasks be executed in parallel between the n node machines of the cluster, each node machine distributes the comparative calculation task of two sequences to p hardware calculation clusters to be conducted in parallel, thereby realizing the multi-level acceleration objective in parallel of three layers including a cluster node layer, a flow-level calculation layer, as well as a flow inner core command layer.

A method according to the invention for stopping a manipulator (1) includes these steps: advance simulation of stopping distances for different states (q, dq/dt, L) and/or braking force profiles ([tau]) of the manipulator (S10), estimating of an upper limit as the stopping distance (smax) on the basis of the stopping distances simulated in advance (S120), monitoring a zone (A0; A1; A2), and decelerating the manipulator (1) when a zone is violated, wherein the monitored zone is defined variably (S130) during operation on the basis of the stopping distance (smax) of the manipulator.

A kind of fission type combustion flame detecting system which include only photo detector, fire examine probe and fire examine amplifier that connect to pretreating open circuit of photo detector output terminal. Fire examine amplifier includes one flame analog signal processing circuit, A / D transducer, digital signal processing circuit, display unit, D / A transducer, on-off input and output circuit, and serial communication circuit; the input end of flame analog signal processing circuit attach with pretreating circuit output port of fire examine probe; the input end of A / D transducer attach with flame analog signal processing open circuit's output port; the digital signal processing circuit(DSP) attach with output port of A / D transducer; The display unit, D / A transducer, on-off input and output circuit, and serial communication circuit respectively attach with digital signal processing circuit; the DSP circuit includes microprocessor that has interior signal processing system. The signal processing system includes signal acquisition module, digital filter module and analysis process module. Digital signal processing circuit(DSP)output switching value signal about with or without flame, and with or without trouble, and combustion flame's frequency and its corresponding power spectrum.

The invention provides a spatial resolution measuring device of an X-ray planar detector. The device comprises an X ray generating device, a resolution board, a filter plate and an X-ray planar detector, wherein a pin hole is formed between the resolution board and the X-ray planar detector, and a central ray emitted from the X ray generating device sequentially passes through the center of the resolution board, the center of the filter plate, the pin hole and the center of a photosensitive surface of the X-ray planar detector. A translational table I drives the resolution board to move along a light path direction, and a translational table II drives the pin hole to move along the light path direction so as to adjust the amplification factor of a pin-hole imaging system, and the resolution board is enabled to be imaged on the photosensitive surface of the X-ray planar detector so as to generate a measured line pair beam. The spatial resolution measuring device of the X-ray planar detector, provided by the invention, has the advantages that the spatial resolution and accuracy of measurement are improved, the difficulty of manufacturing of the resolution board is lowered, and the photosensitive surface of the X-ray planar detector is not damaged.

The invention provides a transformer for heating high-voltage high-current lamp filaments. A secondary side winding of the transformer adopts a complete-covering type design using a copper conductive disc, a conductive rod and a conductive column to form a turn of windings; the inductance leakage is greatly reduced while the upper limit value of the output current is improved; the space between a primary side winding and the secondary side winding is designed by multiple insulating ways that are carried out by adopting transformer oil, a poly-tetra-fluoro shell and an organic glass plate, so that the voltage resistance between the primary side winding and the secondary side winding is effectively improved, and the spacing between the primary side and the secondary side is reduced; the transformer has the advantages of small and compact structure, light weight, high output current, high voltage resistance, low resonance current and the like; and the transformer can stably and effectively provide high current in an electronic beam current generating system and can be used for heating lamp filaments in an electronic gun.

The invention discloses a high-speed and high-flux particle speed measuring system based on optical time stretching. The high-speed and high-flux particle speed measuring system comprises a light source (1), a time stretching module (2), a space mapping module (3), an amplifier (4) and a beam splitter (5) which are sequentially connected, the output end of the beam splitter (5) adopts two-way output and is divided into an upper branch (6) and a lower branch (7), the output upper branch of the beam splitter (5) is connected with a spectrum analyzer (8), and the output lower branch of the beam splitter (5) is connected with a photoelectric detector (9) and a data acquisition processor (10). According to the high-speed and high-flux particle speed measuring system, particle high-speed line scanning is completed through an optical time stretching technology, speed limitation and flux limitation of a conventional particle speed measuring method are broken through, and the speed upper limitand the detection flux of particle speed measuring are increased effectively.

The invention discloses a method for generating a geometric model of a two-dimensional high-volume-fraction earth-rock mixed material, which comprises the following steps of: firstly, generating randomly distributed particles in any shape according to a grading curve; performing Minkowski sum operation on the particles, and controlling the minimum gap between the adjacent particles; achieving transition from particles to clusters by an overlapped discrete element cluster method, and randomly placing the particles in a certain area; assigning a linear contact model, performing DEM simulation, separating overlapped clusters, and recording initial positions, displacement and rotation of the clusters; and finally, reconstructing the model based on the displacement and rotation information. The theoretical maximum volume fraction of any particle shape is easy to obtain, meanwhile, the boundary distribution problem of the particles and the contact problem between the particles are solved, in addition, the periodic boundary condition in the DEM provides a simple implementation method for the periodic microstructure, the generated model better conforms to the actual situation. Reliability of a subsequent numerical method test research result can be improved, and the method has relatively high application significance.

The invention discloses a browser based screen frame transmission method. The method comprises the steps that a display frame in the present moment is captured; data of the captured display frame is transmitted to a local browser; on the basis of the local browser, the data of the display frame is sent to a server; and via the data, the server is triggered to send the frame of the display frame toa subscribed receiving-end device via a multimedia channel, and the receiving-end device which receives the data is triggered to render and display the data via a browser. The multimedia channel includes a communication line of UDP based on WebRTC. An embodiment of the invention further provides a screen frame transmission device and system and a storage medium. Thus, screen frame transmission can be more instant and smoother, and the upper limit of participators that can be supported in screen frame transmission can be increased.

The invention discloses a flexible dot-matrix electromyographic signal wireless acquisition system capable of realizing channel hot plugging. The flexible dot-matrix electromyographic signal wirelessacquisition system comprises a plurality of flexible wireless data acquisition modules and a main control unit. The plurality of flexible wireless data acquisition modules can be completely attached to all positions of a human body, and acquire and send human body electromyographic signals; and the main control unit is connected with an upper computer, and is used for receiving the human body electromyographic signals sent by the flexible wireless data acquisition modules, synthesizing an electromyographic image and sending the electromyographic image to the upper computer. According to the flexible dot-matrix electromyographic signal wireless acquisition system, plugging of an acquisition channel can be realized in an electrified state, so that the reliability, rapid maintainability, redundancy, timely recovery capability on faults, and the like of the system are improved, and the adaptability and convenience of the acquisition system are improved; meanwhile, the flexible wireless data acquisition modules can be freely increased and decreased, so that the expansibility of the acquisition system and the comfort in the wearing process are improved; and on the premise of guaranteeingthe acquisition quality, targeting and controllability of electromyographic signal data acquisition are improved, and the flexibility and convenience of the acquisition system are improved.

The invention relates to the technical field of heat dissipation coatings for electronic components, in particular to an epoxy resin and graphene composite heat dissipation coating for 6061 aluminum alloy plates and a preparation method. The coating is prepared from the following components in parts by weight: 15-25 parts of epoxy resin, 4-6 parts of a reactive diluent, 1-2 parts of a dispersing agent, 3-5 parts of a curing agent, 2-3 parts of a cerium compound, 1-1.5 parts of a nitrogen-boron compound, 2-3 parts of a titanium compound and 0.0008-0.0012 part of graphene oxide powder. Epoxy resin and the curing agent of the heat dissipation coating are cross-linked to form a network-shaped chemical structure with high mechanical strength, the network-shaped chemical structure is used as a matrix, three radiation fillers including the cerium compound, the nitrogen-boron compound and the titanium compound and graphene oxide powder are used as fillers, and the heat dissipation coating is good in cohesiveness, adhesiveness, stability, chemical resistance and insulativity and high in mechanical strength. Most importantly, the heat dissipation coating is of an industrial grade, but the improvement of the heat dissipation performance of the 6061 aluminum alloy plate after the heat dissipation coating is applied to the 6061 aluminum alloy plate is superior to that of an existing nanoscale heat dissipation coating.

The invention relates to a shunting type (Continuously Variable Transmission) mechanism and a torque transferring method thereof. The shunting type mechanism comprises a box body (1), an input belt pulley mechanism (2), an output belt pulley mechanism (3) and a torque output mechanism (8), wherein the input belt pulley mechanism (2) and the output belt pulley mechanism (3) are connected with the box body (1) and a transmission belt (15) is connected between the input belt pulley mechanism (2) and the output belt pulley mechanism (3), a first gear (4) is connected with a transition gear mechanism (5) connected with a shell gear (68), a first differential mechanism (6) is arranged on the box body (1), two sides of the first differential mechanism (6) are respectively provided with a second gear (10) and a third gear (9), a second differential mechanism (7) is fixedly arranged on the box body (1), two sides of the second differential mechanism (7) are provided with a fourth gear (12) and a fifth gear (11), and the second differential mechanism (7) is connected with the torque output mechanism (8). According to the shunting type mechanism disclosed by the invention, an input torque is divided into two parts so that the load of the transmission belt is lightened and the upper limit of a transferring torque is largely increased.

The invention discloses a quick response access control method and system. The method comprises steps that S1, a user biological characteristic database is established; S2, other identity identification systems and the user biological characteristic database are utilized to establish a priority comparison database; S3, a secondary comparison database is formed according to the user biological characteristic database and the priority comparison database; S4, the user biological characteristic information is acquired; S5, the collected biological characteristic information is matched to the priority comparison database, if matching is successful, a door opening command is sent to control door opening, if matching is unsuccessful, the process proceeds to a S6; and S6, the biological characteristic information is matched with the secondary comparison database, if matching is successful, the door opening command is sent to control door opening, if matching is unsuccessful and fails, the process returns to the S4. The method is advantaged in that the comparison speed of biological characteristic identification access can be improved, the access user limit is enhanced, and thereby user experience is improved.

The invention discloses a ZigBee-IP hybrid network. The ZigBee-IP hybrid network comprises central control equipment, and IP network equipment and a central node which are connected with the central control equipment respectively, wherein the central node comprises a gateway and a coordinator; the central node is connected with ZigBee network equipment; the central control equipment is the centerof the whole network, and comprises a driver loader; the gateway is provided with bridging equipment of two networks; and the central control equipment is provided with a corresponding driver for performing specific network access authentication and automatic loading on equipment in a ZigBee network. Through adoption of the ZigBee-IP hybrid network, the ZigBee network can be limited to a certain extent, a network structure with a central node is adopted, and the upper limit of the network scale is raised.

The invention discloses a high voltage XLPE cable and accessory fundamental wave and multi-harmonic wave superposition testing device, and relates to the power cable detection technical field; the high voltage XLPE cable and accessory fundamental wave and multi-harmonic wave superposition testing device comprises an AC power supply, a fundamental wave and multi-harmonic wave superposition generation unit, a fundamental wave and multi-harmonic wave superposition control unit, an intermediate transformer, a compensation reactor, a standard capacitance unit, a voltage analyzer and a test loop unit; the fundamental wave and multi-harmonic wave superposition voltage signals can be simultaneously transmitted; the testing device can precisely control each harmonic wave voltage amplitude and content, can realize fundamental wave voltage and multi-harmonic wave voltage integrated control and output, and can test the insulation performance of the high voltage XLPE cable and accessories under thefundamental wave and multi-harmonic wave superposition voltage effect.

The invention discloses an implementation method of an openstack full-distributed type dhcp service, relating to the field of cloud computing. The method comprises steps of deploying dhcp services onall the computing nodes; creating a namespace on each computing node; creating a trunk port on the virtual machine network bridge and associating with the namespaces; setting a rule of the flow table,only allowing network flow of a related port of a virtual machine to flow through the trunk port, establishing a dhcp service process after the port of the virtual machine is bound with a computing node, and only allowing a dhcp service of the computing node to run in the namespace of the computing node. According to the method provided by the invention, the service of the dhcp is only provided by the process of the node; the network does not pass through the network card and directly corresponds to the operating system, so that the performance of the system can be greatly improved, the configuration file of the dnsmasq is simplified, only the information related to the single network card needs to be configured, and the complexity of the configuration file is reduced.

The invention relates to a slapper detonator electric exploding foil volt-ampere characteristic testing device, in particular to a voltage continuously adjustable electric exploding foil volt-ampere characteristic testing device and a charging and discharging method. The problems are solved that a traditional slapper detonator electric exploding foil volt-ampere characteristic testing device cannot be miniaturized, is poor in use economy and is limited in application range. The voltage continuously adjustable electric exploding foil volt-ampere characteristic testing device comprises a main circuit, a control circuit and a signal generator, and the main circuit comprises a transformer, a field effect transistor, a relay, a first optocoupler, a second optocoupler, a diode, first to fifth capacitors and first to eighth resistors. The transformer is a flyback transformer; the relay is a high-voltage reed pipe relay; the fifth capacitor is a high-voltage capacitor; and the fifth resistor is an adjustable resistor. The device is suitable for the electric explosion performance test of the electric explosion foil.

The present invention relates to the technical field of mask plate manufacturing, particularly to a metal mask plate preparation method. According to the present invention, a photoresist layer with a plurality of openings is formed on an organic film, and after a metal film is formed in the opening, the metal film is peeled off to form a mask plate, such that the precision of the mask plate and the upper limit of the PPI can be improved.