272results about How to "Reduce transfer speed" patented technology

In a wireless communication system based on an OFDM technology, a control channel and a low-speed data channel can be multiplexed without a reduction in the transmission speed of a traffic channel. In a communication system that is operated by multiplexing a traffic channel for performing high-speed data transmission and a control channel for performing low-speed control information transmission, an OFDM signal for transmitting the traffic channel and an OFDM signal for transmitting a control signal are multiplexed for transmission. In a receiving station, the control channel is first demodulated/decoded and a judgment is made as to whether or not any signal addressed to the self station is contained in a traffic channel signal. When any signal addressed to the self station is contained, the control channel signal is cancelled from the reception signal in accordance with a wireless channel quality and the traffic channel is demodulated.

A data transfer method which is capable of transferring a predetermined amount of data in one transaction at only one time, and preventing the number of ports of a master chip and the number of signal lines connected between the master chip and slave chips from being increased. A single master chip and a plurality of slave chips which receive data transferred from the master chip are connected by a ring-like path. Data is transferred from the master chip to the slave chips via the ring-like path.

The invention relates to a five-axis numerical control processing technique for complex curved surfaces, in particular to a tracking smoothing method suitable for a five-axis numerical control device, which belongs to the technical field of numerical control. The method comprises the following steps of: 1, continuously reading a segment of numerical control command point sequence, and identifying a program segment which satisfies a smooth curve interpolation condition; 2, estimating the positions of interpolation points between adjacent command points, and taking the positions as first-time correction command points; 3, parameterizing the first-time correction command point; 4, generating second-time correction command points, and determining first-order derivative vectors and second-order derivative vectors of the second-time correction command points; and 5, constructing a quintic spline curve for each coordinate component of adjacent second-time correction command points respectively, connecting the quintic spline curves into an integral smooth curve, and performing curve interpolation on the smooth curve. By means of the method, the processing efficiency and the processing accuracy of the five-axis numerical control device are increased, and a turning phenomenon caused by broken line tracks is eliminated.

The invention discloses water montmorillonite nano composite heat insulating waterproof paint and a preparation method thereof. The water montmorillonite nano composite heat insulating waterproof paint comprises the following ingredients in percentage by mass: 30 to 35 percent of nano composite emulsion, 10 to 15 percent of polymer emulsion, 10 to 15 percent of rutile-type titanium pigment, 10 to15 percent of organic modified nano montmorillonite, 5 to 10 percent of nano oxide, 0.3 to 0.35 percent of pH adjusting agent, 0.50 to 0.65 percent of film-forming additive, 0.35 to 0.4 percent of elastic foam killer, 0.20 to 0.30 percent of wetting agent, 0.10 to 0.15 percent of dispersion agent, 0.50 to 0.65 percent of anti-freezing agent, 0.10 to 0.15 percent of sterilization antiseptic and 20to 25 percent of water. The water montmorillonite nano composite heat insulating waterproof paint not only has good compatibility, dispersion performance and good stability, but also has good water resistance, heat insulation, environmental protection, outdoor weather resistance and good adhesive attraction and has an antibacterial self-cleaning function.

The invention discloses an application system and method for achieving compatibility and sharing among multi-source heterogeneous systems. The method comprises the steps that a client terminal uploads required files or data to a server terminal by using a login ID corresponding to a user as an entry, when the files or data are required to be used, a server platform is logged in through an account number corresponding to the user client terminal, a server terminal index database is automatically searched for a file conversion record and memory address index table according to an operating instruction of the certain files or data required to be opened, and the certain files or data required to be opened are found from a data center memory system of the server terminal by calling a one-key uploading and downloading interface, converted into a file original data format through a conversion module, and automatically downloaded to the client terminal locally; or the files without the requirement for creating an index are directly called according to the operating instruction. By the adoption of the application system and method, working can be achieved anytime and anywhere, better guarantees are provided for safety and memory of enterprise data, the working efficiency and network safety of an enterprise are improved.

The invention discloses a maneuvering target radial acceleration and speed estimation method based on an orthogonal match pursuit, belonging to the field of radar signal processing. According to the maneuvering target radial acceleration and speed estimation method, a radial acceleration and a radial speed of a high-speed and large-maneuvering target can be rapidly accurately determined, the tracking performance and the recognition capability of a radar to the high-speed and large-maneuvering target are effectively improved, the response time of a weapon system is increased, and the attacking capacity to the target is enhanced. The maneuvering target radial acceleration and speed estimation method provided by the invention comprises the following steps of: 1, sampling a signal received by a radar, establishing a complete atom library; 2, carrying out orthogonal match pursuit decomposition on the signal; and 3, searching a sparse solution energy diagram peak value, determining a radial acceleration and a radial speed of the signal according to peak value coordinates. The maneuvering target radial acceleration and speed estimation method has the advantages of high instantaneity, accuracy in radial acceleration and speed estimation, easy realization of engineering, stronger engineering application value and popularization prospect, and can be used in the fields of improving high-maneuvering target real-time accurate pursuit and radar target type recognition, and the like.

The invention discloses a fireproof coating and a preparation method thereof, and relates to the field of coatings. The fireproof coating provided by the invention comprises the following components in parts by weight: 180-250 parts of an acrylic emulsion, 30-50 parts of potassium silicate, 400-450 parts of a fire retardant, 50-70 parts of chlorinated paraffin, 20-30 parts of diantimony trioxide, 5-10 parts of nano-magnesium hydroxide, 10-30 parts of composite zinc phosphate, 5-10 parts of titanium dioxide, 10-15 parts of mica powder, 2-6 parts of a dispersing agent, 1.5-2.5 parts of a de-foaming agent, 5-15 parts of a film-forming aid, 1-3 parts of a leveling agent, 20-30 parts of a thickening agent, 1 part of an anti-mould and anti-alga agent and 120-200 parts of de-ionized water. The coating belongs to environment-friendly coatings, is long in fireproof time, good in decorative performance, excellent in waterproof performance and free from APEO (alkylphenol ethoxylates) and compounds of metal such as lead or chromium, and cannot cause harm to environment and human health.

The present invention discloses a money piling method and system and a finance self-service device. The money piling method comprises: detecting the physical state of a paper money unit through a paper money detection device; according to the physical state of the paper money unit, calculating the optimal money piling parameters of the paper money unit, and transmitting the paper money unit into a money piling device through a transmission device; and triggering the money piling device to pile the paper money unit after the paper money unit is transmitted into the money piling device and reaches the optimal money piling parameters. According to the detected physical state of the paper money unit, the optimal money piling parameters of the paper money unit can be dynamically regulated to facilitate improving the regularity of the paper money piling.

The invention relates to an explosive welding method for a copper-aluminum composite material. An aluminum composite plate (4) is arranged on a copper substrate (6) in a parallel mode through a supporting object (5), a rubber buffering layer (3) is laid on the aluminum composite plate (4), rock ammonium nitrate explosive cloth number two is arranged on a rubber buffering layer (3), the copper substrate (6) is arranged on a rubber cushion layer (7), a medium-fine sand foundation (8) is located below the rubber cushion layer (7), and the copper-aluminum composite material is obtained through explosive welding. A copper-aluminum composite plate produced through the explosive welding method can achieve 100% welding composite rate, is evenly formed in a composite mode without the phenomena of layering, swelling, vortex and the like.

A transmitting device of the present invention comprises an encoder (20), a transmitting unit (100) including and a pulse generator (30) and a parallel-to-serial converter (50), a transmitting control unit (40), and an a antenna (90) The pulse generator (30) comprises a first pulse train generator (31), a second pulse train generator (32), and an n-th pulse train generator (33) A k-bit information bit train is inputted from the information signal source (10) The encoder (20) encodes the k-bit information bit train into an n-bit encoded bit train at a coded rate of (k/n) The pulse generator (30) generates n-piece repetitive pulse trains corresponding to the n-bit encoded bit train The antenna (90) transmits the n-piece repetitive pulse trains as UWB-IR.

The invention provides a composite energy-saving coating material, which is made of multiple microporous silicate mineral raw materials after surface hydrophobic treatment and reflective fillers. The composite energy-saving coating material enhances the weather resistance and water resistance of a coating, avoids the excessive change of a coefficient of heat conductivity, combines two favorable performances of reflection and heat insulation, integrates two roles of the reflection and obstruction at a suit, has high sunlight reflectivity and good heat insulating effect, avoids repeated multilayer painting operation of an insulation surface and the like, can be formed at a time through painting, and has the advantages of stable performance, uniform coating, low cost, environmental-friendliness and the like. A preparation method is simple in technology and low in cost, saves energy and facilitates industrial popularization and application.

Disclosed is an animal tracking device, which is worn by an animal and tracks a location of the animal, the animal tracking device including: a location determining unit configured to determine a current location according to information received from a GPS antenna; a sensor configured to determine state information about the animal; a device identification information storing unit configured to store device identification information for identifying a device; a battery configured to supply power; a first communication unit configured to perform RF communication with a user's device; and a main control unit, which controls the device, and controls the first communication unit to communicate with the user's device through another animal tracking device registered in the user's device, and a system including the same and a method of tracking a location of an animal.