94results about How to "Short transmission path" patented technology

A method of delivering a packet from a first device in a first piconet of a scatternet to a destination device in a second piconet of the scatternet comprising: creating a direct radio communications link between the first device and the destination device; and transmitting the packet via the direct radio communications link. Alternatively, a method of delivering a packet from a first device in a first piconet of a scatternet to a destination device in a second piconet of that scatternet comprising: creating a third piconet between the first piconet and the second piconet; and transmitting the packet via the third piconet. Alternatively, a method of delivering a packet from a first device in a first piconet of a scatternet to a destination device in a second piconet of the scatternet comprising: receiving the packet at the first device; determining whether the creation of a direct radio communications link between the first device and the destination device is possible; and if it is not possible, forwarding the packet within the scatternet.

A method and arrangement for detecting an object in a radar field (2.2) in which a simulator (3) arranged in a stationary manner in a radar field (2.2) of a radar device (2), which is outfitted with a radar transmitter (2.1) and a radar receiver (2.3), is suitable for simulating a speed profile which is defined by temporally consecutive speed changes. The simulator (3) is actuated in such a way that it simulates at least one predetermined atypical speed profile which cannot be associated with any expectable moving object so that, in addition to reflection signals from objects moving through the radar field (2.2), the radar receiver (2.3) receives simulator signals caused by the simulator (3), and status information associated with the atypical speed profile derived from these simulator signals.

The invention provides a driving control circuit used for a laser tracker precision servo system. The driving control circuit comprises a data collection board used for collecting data of a permanent magnetic synchronous motor, a main control board connected with an upper computer and the data collection board and used for acquiring a target state command and reference input signals from the upper computer, acquiring data of the permanent magnetic synchronous motor from the data collection board and processing the target state command, the reference input signals and the data of the permanent magnetic synchronous motor to generate a control signal and a power driving board connected with the main control board and used for conducting power amplifying on the control signal output by the main control board and outputting a control voltage signal to drive the permanent magnetic synchronous motor to work. The circuit is formed by combining three circuit boards of the main control board, the data collection board and the power driving board in terms of hardware, configuration can be conducted according to the specific application requirements, and the flexibility is higher.

A method of an electronic device in a wireless communication system is provided. The method includes receiving, by the electronic device, a service through a first content server, performing, by the electronic device, handover from a serving Base Station (BS) to a target BS, and continuously receiving the service through a second content server closest to the electronic device.

The invention discloses a board feeding machine for a printed circuit board (PCB) production line, which comprises a left trough plate (1) and a right trough plate (2), wherein both the lower parts of the left trough plate (1) and the right trough plate (2) are respectively provided with a clamping block (4) capable of clamping the downmost PCB, the clamping block (4) is connected with a clamping cylinder (5) driving the clamping block to act; both the lower parts of the left trough plate (1) and the right trough plate (2) are respectively provided with a board bearing platform (6), and the distance between the two board bearing platforms (6) is slightly smaller than the distance between two lamination channels (3); a stripper gap (7) is arranged between the board bearing platform (6) and the corresponding left trough plate (1) or between the board bearing platform (6) and the corresponding right trough plate (2), and one end of the stripper (8) is located in the stripper gap (7) while the other end thereof is connected with a stripper cylinder (9); and the lower part of the board bearing platform (6) is provided with a transmission guide rail (10) for feeding the fell PCBs in the production line, and the lower part of the transmission guide rail (10) is provided with a supporting plate (12) connected with a supporting plate cylinder (13). The board feeding machine in the invention has simple structure, short board transmission distance and safety and reliability.

Provided is a composite light guide plate. The composite light guide plate comprises a transparent substrate (1), a light leading-out film (2) is attached on the substrate (1), and the bottom face of the light leading-out film (2) is a combined face of a convex face (3) and a concave face and is the attached face with the substrate. A natural transitional face of the convex face and the concave face is of an inclined face or an arc-shaped face and serves as reflection faces (5, 6) of light. The width or the diameter of the convex face is a, a=0.005-0.5mm, surface roughness R of the convex face and the transitional face is smaller than 0.05, the height h of the reflection face is 0.65-2.5 times of the width or the diameter a of the convex face, and the included angle between tangent plane of any point on the reflection face and the top face of the substrate is 30 degrees-80degrees. The light guide plate is applied to lighting or luminous displaying, and the production of the light guide plate includes six steps: choosing substrate material; making the substrate; choosing the light leading-out material; making a mold; and making and attaching the light leading-out film. Compared with the prior art, the composite light guide plate has the advantages of being high in lighting effect, and controllable in radiance and uniformity, and possessing a self-protection interface structure and the like.

The invention discloses a transformer with a high set-up ratio, a solar inverter and a solar battery system. According to the invention, the low output voltages of power sources are converted to high output voltages through the transformer with the high set-up ratio; and according to the specific application and different control methods, the outputs of the transformer with the high set-up ratio from a first technical scheme to a fourth technical scheme can be standard direct current voltages or controlled and modulated specific voltage wave forms. By using the transformer with the high set-up ratio, the solar inverter and the solar battery system, the defects of small set-up ratio, long transmission path, large additional loss, low energy conversion efficiency and the like in the prior art can be overcome, so as to realize the advantages of large set-up ratio, short transmission path, small additional loss and high energy conversion efficiency.

A chopper folder for a rotary press folds signatures which are periodically conveyed, one signature at a time, from a folding machine. The chopper folder includes a pair of folding rollers for folding a signature parallel to the conveyance direction, a prime mover, a crank arm fixed to an output shaft of the prime mover to be rotated together with the output shaft, a blade holder connected to the crank arm via a link, a chopper blade held in the blade holder and adapted to push the signature from an upper surface thereof in order to insert the signature into a space between the pair of folding rollers, and guide units for restricting motion of the blade holder such that the blade holder reciprocates only in a direction perpendicular to a conveyance plane along which the signature is conveyed.

The invention belongs to the field of electrode materials, and discloses a high-loadng self-supporting thick electrode prepared through phase inversion and a preparation method and application thereof. The electrode prepared by the process has the following advantages: 1) a current collector, a binder and additional conductive carbon are not needed, so that the overall energy density of the electrode is greatly improved; 2) the thickness of the electrode is 300-3000 [mu]m, the loading capacity is 8-55 mg cm <-2 >, the thick electrode can improve the proportion of active materials in the wholeenergy storage equipment, and the energy density of the whole energy storage equipment is improved; 3) compared with a thin electrode, under the condition of achieving the same energy storage capacity, the high-loading thick electrode has fewer preparation steps and is lower in production cost; and 4) the electrode is provided with micron-sized finger-shaped holes communicated with the surfaces ofthe two electrodes and hundred-nanometer-sized holes dispersed in the whole electrode, and the holes ensure that the electrode has excellent rate capability even under a high loading capacity. The method promotes the industrial application and mass production of the high-loading self-supporting thick electrode.

The invention discloses a low-power-consumption SAR ADC control logic circuit. The control logic circuit comprises a shift register module (10) and a data register module (20); the shift register module (10) comprises N improved D triggers; and the data register module (20) comprises N dynamic comparators. Compared with the traditional circuit structure, the logic unit of the data register module(20) in the invention can store comparator double-end output in an SAR ADC analog circuit at the same time by only needing a dynamic comparator; therefore, the SAR ADC control logic circuit structureis simplified; power consumption of the control logic circuit part can be effectively reduced; simultaneously, because a few transistors are adopted in the circuit structure in the invention, the chiparea is easily reduced; in addition, because positive feedback loops are increased in the dynamic comparators, the data transmission delay is reduced; and, compared with the traditional circuit, thedata transmission speed of the circuit in the invention is relatively rapid.

A method measures current harmonics or voltage harmonics that occur in power supply networks. In the method, an instrument transformer produces a measurement signal for a current flowing in a conductor in a power supply network, or for a voltage that occurs on the conductor. A filter is disposed adjacent to the instrument transformer and filters out that component of the measurement signal that is associated with the current or voltage fundamental, and amplifies those components of the measurement signal that are associated with the current or voltage harmonics. The measurement signal that has been changed in this way is transmitted to an evaluation device, which is configured to determine the magnitude of the harmonics. A configuration for performing the method has such an instrument transformer and filter.

The invention relates to a three-dimensional porous self-supporting electrode and preparation and application thereof, the prepared electrode does not need a current collector, a binder and additionalconductive carbon, and the overall energy density of the electrode is greatly improved; the electrode has a heteroatom-doped three-dimensional conductive carbon network and a porous structure, and can ensure rapid transmission of electrons and sodium ions, thereby showing excellent rate capability; in the preparation process, the surface of an active substance is uniformly coated with the carbonized macromolecular resin, so that the volume change of the active substance in the circulation process can be inhibited, and the excellent circulation performance is achieved; and compared with a traditional self-supporting electrode preparation method (such as suction filtration film forming and electrostatic spinning), the process is simpler, lower in energy consumption and more suitable for large-scale production.

The invention relates to the technical field of power cable accessories, in particular to a conductive cone, a cable terminal and a cable intermediate joint. The conductive cone comprises a first transparent insulator arranged inside and a transparent conductive layer covering the outside, and the transparent conductive layer completely covers the first transparent insulator. The cable terminal comprises the conductive cone, and the conductive cone is arranged at the joint of the insulating layer of the cable and the semi-conductive insulating shielding layer of the cable in a sleeving manner.The cable intermediate joint comprises a pair of conductive cones, the pair of conductive cones are oppositely arranged, the conductive cones are arranged at the joint of the insulating layer of thecable and the semi-conductive insulating shielding layer of the cable in a sleeving mode, and a pair of cable conductors located in the center of the cable joint are fixed through a connecting structure. The invention provides the conductive cone, the cable terminal and the cable intermediate joint which are wide in application range and high in partial discharge monitoring sensitivity.

The embodiment of the invention relates to the technical field of communication systems, in particular to a time service system and method. The time service system comprises an antenna; a receiver arranged adjacent to the antenna and connected with the antenna, and the receiver obtaining standard time service information through the antenna and converting the standard time service information intodigital clock reference source information for transmission; and a local time service device connected with the receiver and used for receiving the digital clock reference source information and providing standard clock information for an external communication system according to the digital clock reference source information. Since the antenna and the receiver are arranged adjacently, and the receiver converts the standard time service information into the digital clock reference source information and then transmits the digital clock reference source information, the transmission path between the antenna and the receiver is very short, the time service deviation caused by a longer coaxial cable is avoided, the standard time service information is converted into the digital clock reference source information for transmission, and the time service precision is greatly improved.

The invention relates to an assembled type biosensor chip. A signal acquisition circuit and a biological signal acquisition working electrode are located on a first surface layer and a second surfacelayer of a first base material layer; the signal acquisition circuit and the biological signal acquisition working electrode are connected through a first conducting hole; a signal acquisition reference electrode is located on a first surface layer of a second base material layer; the first base material layer and the second base material layer are electrically connected through a conducting convex point; the signal acquisition working electrode is aligned to the signal acquisition reference electrode and a gap is formed between the two electrodes; detected liquid (such as sweat) flows throughthe gap to react with a functional thin film modified on the surface of the working electrode, so as to generate current or electric potential; and the signal is amplified, filtered and acquired by the signal acquisition circuit and then is sent to a main control circuit for processing. The sensor chip assembled by the structure has the advantages of short signal transmission path and small signal path interference; the two electrodes are aligned to each other and an electric field between the two electrodes is more uniform and stable; the liquid is easier to flow in the capillary gap, conditions of electrochemical reaction are more stable and the signal stability is good; and the integration level is high.

The invention belongs to the technical field of lithium primary battery positive electrode material preparation, and particularly relates to a chromium oxide / CNTS composite material and preparation and application thereof. The chromium oxide / CNTS composite material is prepared from chromium oxide and carbon nanotubes as raw materials through a high-temperature solid-phase method or a high-energy ball milling method. The CNTS with good conductivity is compounded with the chromium oxide, so that the conductivity of the obtained composite material is obviously improved, the capacity is increased, and the rate capability is improved.

The invention provides a preparation method of a sodium vanadium fluorophosphate positive electrode material. The preparation method comprises the following steps: mixing a vanadium source, a phosphorus source, a sodium source, a fluorine source and an organic reducing agent to prepare a solution, carrying out spray pyrolysis to obtain Na3V2(PO4)2F3 microspheres, and carrying out mechanical ball milling on the Na3V2(PO4)2F3 microspheres and a carbon material to obtain a well-crystallized Na3V2(PO4)2F3 / C material. Compared with the traditional ball milling method, the spray pyrolysis-mechanicalball milling method adopted by the invention has the advantages of high material synthesis speed, low energy consumption, high yield, simple process, easiness in operation and the like, and avoids the long-time sintering process of the raw materials at high temperature. The obtained Na3V2(PO4)2F3 microspheres and the final Na3V2(PO4)2F3 / C material have spherical morphology and are relatively small in particle size. The prepared Na3V2(PO4)2F3 / C material passes an electrochemical performance test, has relatively good specific discharge capacity, and has a relatively good application prospect ina sodium-ion battery positive electrode material.

The invention discloses a wireless federated learning-oriented mobile user equipment clustering training method, which is characterized in that an edge service server and a plurality of mobile user equipment are arranged in a wireless network, and each user equipment belongs to a local data set. Firstly, a DBSCAN algorithm and an LEACH algorithm are used to divide users into a plurality of clusters and select cluster heads. Then, each user uses local data to train respective model parameters and uploads the model parameters to a cluster head of a cluster where the user is located for aggregation, and the cluster head further uploads the aggregated model to an edge server for aggregation; and the edge server distributes the aggregated model parameters to the cluster head, and the cluster head further distributes the aggregated model parameters to the user equipment in the cluster for the next round of training. And repeating the steps until convergence. By using the clustering training method, the communication overhead and the training time delay of wireless federal learning can be reduced.

The invention provides a wavelength division multiplexer and a corresponding optical module. The wavelength division multiplexer comprises an input optical fiber, a first output optical fiber, a second output optical fiber, a focusing lens, and a dielectric film filter. The input optical fiber, the first output optical fiber and the second output optical fiber are located on the left side of the focusing lens, and the dielectric film filter is located on the right side of the focusing lens. The dielectric film filter has a first light splitting surface and a second light splitting surface, wherein the second light splitting surface has a preset angle relative to the first light splitting surface, and the plane where the first light splitting surface is located intersects the plane where the second light splitting surface is located. According to the wavelength division multiplexe, composite light beams are split through the filter with a specific structure, so that the output optical fiber correspondingly outputs light with a corresponding wavelength, and the purpose of splitting the lights is achieved. In the actual manufacturing process, the process of sticking a reflection pieceand the filter is eliminated, the manufacturing process is simple, and the yield is high.

The invention provides a power supply device and a single board, and relates to the technical field of power supply. The power supply device comprises a printed circuit board, a power supply module arranged on the printed circuit board, a to-be-powered device and a through-current module. The power supply module and the to-be-powered device are arranged on the first surface of the printed circuitboard. The through-flow module is arranged on the second surface of the printed circuit board, and the second surface is opposite to the first surface. The power supply module is electrically connected with the to-be-powered device through the through-flow module. Therefore, the current output from the power supply module can be transmitted to the to-be-powered device through the through-flow module, so as to achieve the power supply of the power supply module to the to-be-powered device. By adopting the scheme, the transmission path of current is short, and the loss of the current in the transmission process can be reduced. In addition, the increase of the number of layers of the printed circuit board can be effectively avoided, so that the cost of the printed circuit board is reduced.

The invention belongs to the technical field of photocatalysts, and particularly relates to an S-type heterojunction catalyst as well as a preparation method and application thereof. The preparation method comprises the steps of S1, synthesizing MIL-68 (In); S2, synthesizing NiIn LDH; and S3, synthesizing NiIn LDH / In2S3. According to the catalyst, In2S3 is grown on a NiIn LDH nanosheet in an epitaxial manner to construct a NiIn LDH / In2S3 heterojunction with a p-n type columnar structure. The NiIn LDH / In2S3 heterojunction is formed through one-step vulcanization of NiIn LDH, the advantages of NiIn LDH and In2S3 are integrated, higher light utilization efficiency and electron-hole separation capacity are achieved, electron-hole recombination is greatly inhibited, and CO2 pollutants in air can be effectively converted and utilized.

The invention discloses a board feeding machine for a printed circuit board (PCB) production line, which comprises a left trough plate (1) and a right trough plate (2), wherein both the lower parts of the left trough plate (1) and the right trough plate (2) are respectively provided with a clamping block (4) capable of clamping the downmost PCB, the clamping block (4) is connected with a clampingcylinder (5) driving the clamping block to act; both the lower parts of the left trough plate (1) and the right trough plate (2) are respectively provided with a board bearing platform (6), and the distance between the two board bearing platforms (6) is slightly smaller than the distance between two lamination channels (3); a stripper gap (7) is arranged between the board bearing platform (6) andthe corresponding left trough plate (1) or between the board bearing platform (6) and the corresponding right trough plate (2), and one end of the stripper (8) is located in the stripper gap (7) while the other end thereof is connected with a stripper cylinder (9); and the lower part of the board bearing platform (6) is provided with a transmission guide rail (10) for feeding the fell PCBs in theproduction line, and the lower part of the transmission guide rail (10) is provided with a supporting plate (12) connected with a supporting plate cylinder (13). The board feeding machine in the invention has simple structure, short board transmission distance and safety and reliability.

The invention discloses a PCB and a method for embedding driven elements in the PCB. The method comprises the steps that A holes are formed in a PCB core plate through cutting, and then the driven elements are placed in the holes; B the upper face and the lower face of the PCB core plate are respectively provided with a dielectric layer, and the dielectric layers seal the driven elements in the holes, wherein a second conductive circuit is arranged on the outer side face of at least one dielectric layer; C a first conductive circuit which penetrates through the dielectric layers and is used for being electrically connected with the driven elements is arranged, and the first conductive circuit enables the driven elements and the second conductive circuit to be communicated. According to the PCB and the method, traditional surface-mounted driven elements are embedded in the PCB, space of the PCB is saved, more components can be arranged on the PCB which can have more functions, and compared with surface-mounted elements, the embedded driven elements are shorter in transmission path of signals and smaller in noise, and BOM management can be realized more easily.

The invention provides an iodine-doping titanium dioxide microsphere electrode and a manufacturing method thereof. The method is characterized by under a room temperature, mixing and stirring absolute ethyl alcohol, lauryl amine and isopropyl titanate and taking as a precursor solution; and then, using iodine and deionized water as a reaction solution, dropping and adding the precursor solution in the reaction solution, rapidly stirring and carrying out reaction for 12 hours; and finally, after centrifugal washing, taking a sediment and adding into the absolute ethyl alcohol and the deionized water, stirring uniformly, taking a TiO2 reaction colloid and adding into a reaction kettle, sealing, controlling a temperature in a range of 160-250 DEG C, carrying out reaction for 12hs, and then cooling to the room temperature, centrifuging, washing and adding ethyecellulose so as to acquire TiO2 slurry, making a TiO2 electrode through screen printing, sintering for 0.5h at 500DEG C, and then acquiring the iodine-doping titanium dioxide microsphere electrode. The electrode acquired in the invention possesses a large specific surface area, an effective electronic transmission path and high conductivity. And the electrode is used in a quasi-solid dye-sensitized solar cell and photoelectric conversion efficiency of the cell can reach 6.38%.

The invention relates to a thin film transistor, comprising a source electrode, a leakage electrode, a semiconductor layer and a grid electrode. The leakage electrode and the source electrode at intervals; the grid electrode, the semiconductor layer, the source electrode and the leakage electrode are arranged in an insulating way through an insulating layer, wherein the semiconductor layer comprises a plurality of carbon nano tubes, and two ends of at least part of the carbon nano tubes are electrically connected with the source electrode and the leakage electrode respectively.

An asynchronous transfer mode machine comprises a processing mechanism (101) and a currency storage mechanism (102), the processing mechanism (101) comprises a first channel (1022) and a temporary storage module (1014), and the first channel (1022) is provided with a receiving module (1011), a currency detection module (1012) and a first node (1013); when a user deposits currency, the paper currency is received by the receiving module (1011) and vertified by the currency detection module (1012), the recognizable paper currency is transferred to the temporary storage module (1014) for storage, and the unrecognizable paper currency is sent back to the receiving module (1011); and when the user withdraws the currency, the paper currency is transferred to the currency detection module (1012) from the temporary storage module (1014) and vertified by the currency detection module (1012), the recognizable paper currency is transferred to the receiving module (1011), and the unrecognizable paper currency is sent back to the temporary storage module (1014) for storage. Thereby, the paper currency transmission path is short, and efficiency is improved; and the paper currency is vertified repeatedly and can be recognized efficiently, and safety is high.

The invention provides a carbon dioxide detection apparatus and detection method used for life detection in ruins. In the apparatus, a sampling rod sleeve is of a hollow cylindrical structure, a conical head is fixed at a front of an internal support to compose a sampling inner core, and the rear end of a conical sleeve and the front end of the sampling rod sleeve is in sealing connection to form a hollow sampling rod; the sampling inner core is inserted into the sampling rod and arranged to be slidable, and a locking device is mounted on the sampling inner core; a gas sampling pump, a carbon dioxide sensor and a separator plate are fixed on the internal support, the separator plate isolates the gas sampling pump from the carbon dioxide sensor, the separator plate and the inner wall of the sampling rod are in sliding hermetic seal, and an outlet air pipe of the gas sampling pump penetrates the separator plate to communicate with the carbon dioxide sensor; and the carbon dioxide sensor is electrically connected with a display control alarm device. With the detection apparatus and detection method provided by the invention, the problem that a conventional carbon dioxide life detection apparatus is not applicable to detection in an environment of rubbles is overcome, and searching of people who are trapped in rubbles in a rescue scene is facilitated.

Elevator arrangement for setting the starting torque of the motor of an elevator machinery, the elevator machinery (1) being mounted on a guide rail (2) in an elevator shaft. The elevator arrangement comprises at least one power sensor (3, 4, 5, 6) for determining the imbalance moment that the car load produces in the elevator machinery.