67results about How to "Reduced complexity requirements" patented technology

Errors in coded macroblocks are concealed during decoding by way of an error concealment stage present in a decoder. Error-concealed macroblocks produced by the error concealment stage undergo deblocking filtering by a deblocking filter before being output by the decoder to avoid the spread of erroneous pixel values. The error concealment stage controls the deblocking filter in accordance with the error concealment technique to vary the strength of the deblocking filter to force maximum strength on transitions artificially created by the recovery of lost macroblocks.

The invention discloses an image signal processing method for interactive multi-viewpoint video system, coding and storing multi-viewpoint video signal code streams and complete disparity field code streams between related viewpoints, obtained in different forecasting modes, and using fedback user end viewpoint selection information and display unit type information to properly select a viewpoint (used for single eye display) or two viewpoints (used for 3D display) or at most four viewpoints (used for 3D display of two virtual viewpoints) from the viewpoint-resolvable structural code streams, so as to implement partial transmission of multi-viewpoint video signals and reducing system's requirements for transmission bandwidth and requirements for user end system complexity, making it able to transmit more programs and service more users in the given network bandwidth and making the cost of a digital interactive multi-viewpoint TV receiver be lower.

The invention discloses a Bluetooth based indoor positioning service system and a Bluetooth based indoor positioning service method, and belongs to the technical field of indoor position positioning. The method comprises the steps as follows: step I, connecting a mobile phone with indoor Bluetooth nodes and an AP node through a client side, and uploading ID information of the Bluetooth nodes which can be connected with the mobile phone to a server through the AP node; step II, converting the received ID information of the Bluetooth nodes into corresponding position information by the server; step III, marking the position information in the corresponding position of an indoor map, and displaying the position information on the mobile phone client-side software. Compared with the conventional indoor positioning system, the system and the method change nothing on a mobile phone with a built-in Bluetooth chip, greatly reduce the requirements on the Bluetooth nodes, and give full play to the capabilities of a mobile terminal and a server, so as to enable the positioning system to be more stable, and enable upgrade and extension of applications to be performed conveniently.

The invention discloses a reciprocity loss compensation method of a 2*2 TDD-MIMO system channel, which mainly solves the problem of channel reciprocity loss caused by in-phase / orthogonal I / Q imbalance in a TDD-MIMO system. In the method, a base station BS and a mobile station MS first measure respectively received direction channels to obtain channel state information CSI of an uplink and a downlink; then converging the CSI of the two links to the BS, and the BS calculates the calibration matrixes respectively used for the BS and the MS; sending the calibration matrix used by the MS to the MS; and when in formal data transmission, the BS and the MS use the respective calibration matrixes to pre-process signals to be sent so as to maintain the channel reciprocity of the uplink and the downlink. The method has the advantages of easiness, good effect and little spending of the system, and is applicable in compensating for the loss of the TDD-MIMO system channel caused by I / Q imbalance.

The invention relates to an AGV (Automatic Guided Vehicle) laser navigation system with inertia compensation, which comprises a laser navigation module, an inertia compensation navigation module, a man-machine interaction module and a bottom-layer control module, and is characterized in that the laser navigation module comprises an industrial control computer and a laser radar; the inertia compensation navigation module comprises a nine-axis acceleration sensor formed by an accelerometer, a gyroscope and a magnetometer and an STM32 core control board (1); the man-machine interaction module comprises a development board integrated with an Android system, a voice interaction unit and a camera; and the bottom-layer control module comprises an STM32 core control board (2), a motor driver and an encoder. The invention realizes navigation of the system by combining a mode of combining inertia navigation compensation and laser navigation, and provides an AGV laser navigation system with inertia compensation which adapts to a working environment having high requirements for the tail-end positioning accuracy and not having a fixed route in operating path, facilitates daily material handling of enterprises, improves the logistics handling efficiency and reduces the labor introduction cost.

The invention belongs to the technical field of digital signal processing and discloses a voice underdetermined blind identification method and device based on frequency spectrum correction and data density clustering to improve algorithm precision, improve algorithm efficiency remarkably and improve the robustness of the algorithm on noise. According to the technical scheme, the method comprises the steps of 1, conducting hanning windowed L point 50% overlapped short time Fourier transform (STFT) to obtain an observation frequency spectrum Xm(t,k); 2, conducting frequency spectrum correction on the STFT observation frequency spectrum frame by frame; 3, for a specific time frame t0, conducting mode purification on all harmonic wave parameters; 4, executing the step 2 and the step 3 frame by frame, and collecting SAS modes of the all the time frames to form a monosource domain omega={zi, i=1,...,P}, wherein P is the number of modes of the monosource domain; 5, conducting data density clustering on the SAS modes in the monosource domain. The method and device are mainly applied to digital signal processing.

Fast partial pixel motion estimation for video encoding can include a technique in which a current partition mode is determined. Where the current partition mode is a 16 by 16 mode, an estimation module compares the gain from a half-pel motion estimation against a half-pel gain threshold and, if the gain exceeds the half-pel gain threshold, the estimation module performs a quarter-pel motion estimation for an entire partition. Where the current partition mode is a 16 by 8 or a 8 by 16 mode, the estimation module determines if a current partition is the first partition in the current macroblock. If the current partition is the first partition in the current macroblock, the estimation module performs a quarter-pel motion estimation for the current partition, determines if the gain from quarter-pel motion estimation is greater than a quarter-pel gain threshold, and sets a flag to true if the gain from quarter-pel motion estimation is greater and the flag to false if the gain from quarter-pel motion estimation is not greater. If the current partition is not the first partition in the current macroblock, the estimation module determines if the flag is true or false and, if true, estimation module performs a quarter-pel motion estimation for the current partition.

The present application relates to the field of wireless communications. Disclosed are a channel state information (CSI) reference resource indication and measurement method and device, so as to reduce the complexity of measurement and computation performed by a terminal. In the solution provided by the embodiments of the present application, a network side informs a terminal of a periodic value and / or a subframe offset value of a periodic CSI reference resource, and after the periodic value and / or the subframe offset value of the periodic CSI reference resource on a carrier is determined, the terminal determines, through a frame structure type used by the carrier and according to the determined periodic value and / or subframe offset value of the periodic CSI reference resource, a time-frequency resource corresponding to the effective CSI reference resource and measures the CSI in the determined time-frequency resource. It can be seen from the above that, the solution can effectively reduce the complexity of measurement and computation performed by a terminal.

The invention discloses a hop-based wireless sensor network node positioning method and a hop-based wireless sensor network node positioning system. The method comprises the following steps of: 1, broadcasting for the first time by each anchor node, and transferring the coordinate and hop information of each anchor node to the whole network in a flooding mode; 2, calculating average hop distance in the network according to the positions of each anchor node and other anchor nodes and hop intervals; 3, broadcasting for the second time by each anchor node, and continuously transferring a correction value in the network; and 4, calculating the coordinate of an unknown node by using a least square method. According to the invention, inter-node distance information is not required to be measured. The method and the system are low in sensor node complexity requirement and low in positioning cost. The positioning method also belongs to distributed positioning algorithms and is suitable for the practical application of a large-scale wireless sensor network.

The invention provides a broadband radar wave signal generating structure and method; the structure comprises a baseband processor, a frequency-agile transceiving chip, a power management unit and a clock distribution unit; the baseband processor is completed by an FPGA (field-programmable gate array) chip, the frequency-agile transceiving chip is initially configured through an SPI (serial peripheral interface) bus, a radar baseband signal is generated as required, the signal is transmitted to the frequency-agile transceiving chip through a transmitting data port, and the power management unit employs a voltage stabilizer to generate voltages required by the baseband processor and the frequency-agile transceiving chip. Radar signals up to 6 GHz in frequency are generated herein through the single frequency-agile transceiving chip along with FPGA hardware architecture, a subsequent variable-frequency circuit is simplified, large-bandwidth frequency hopping feature is achieved, and the design complexity of a local oscillator circuit is decreased.

The invention discloses an integrated technology for realizing the monitoring, control and real-time imaging processing of a multifunctional high-precision synthetic aperture radar system and an implementation method thereof. The technology disclosed by the invention can be applied to the processing and control of comprehensive data of the multifunctional high-precision synthetic aperture radar, namely, state information, parameters and data of various units of the radar system, including system working parameters, inertia, GPS (Global Positioning System) measurement data, radar echo data andthe like, are acquired the acquired data information is subjected to integrated processing in accordance with the working mode of the system, and SAR (Synthetic Aperture Radar) real-time images and relevant processing results are generated while the processing results are utilized to perform optimized control and management on the system, thereby stable and reliable working of the high-precision multifunctional synthetic aperture radar is ensured.

The invention relates to a modular hotel handling robot system. Including laser navigation module, bottom layer control module, elevator interaction module and human-computer interaction module. The laser navigation module includes industrial computer and laser radar; the bottom control module includes STM32 core control board, motor driver and encoder; the elevator module includes signal converter and microprocessor; device, voice interaction unit and camera. The present invention realizes the navigation of the system by means of laser navigation, provides a working environment that adapts to the high positioning accuracy requirements of the terminal, and has no fixed line in the running path, and facilitates the daily material handling of enterprises, improves the efficiency of logistics handling, and reduces manpower and introduction costs. A laser navigation system; at the same time, a series of human-computer interaction modules are designed to facilitate user experience interaction. The elevator module enhances the practicability of the robot and realizes cross-floor transportation.

The invention discloses an uplink access method, a device and a system based on competition. The method includes that at least one uplink access mode selectable for user equipment (UE) is defined and an index corresponding to the at least one uplink access mode is built; an identification (CB-RNTI) for competition access is determined; an uplink access mode for the UE in the uplink access is determined; a base station sends a competition access permission signaling with the identification CB-RNTI on a downlink control channel and informs the UE and the index corresponding to the upper access mode used by the UE; the UE monitors the competition access permission signaling in the downlink control channel through the CB-RNTI, and if the competition access permission signaling is monitored and data are needed to be sent, the uplink access mode adopted by the uplink access is determined according to the index of the uplink access mode carried in the competition access permission signaling. According to the method and the system, the transmission delay of data packets can be effectively reduced.

The invention discloses a firm underdetermined blind separation source number and hybrid matrix estimating method and device. The method comprises the following steps: correcting an observed frequency spectrum; constructing an M*Q-dimension harmonic parameter matrix by using a spectrum correcting result and carrying out normalization on the constructed matrix; establishing a distance matrix for the normalized matrix; judging whether elements in different lines of the distance matrix are smaller than a threshold value ksai or not, defining the frequency corresponding to lists with elements not smaller than the threshold value as overlapped frequency, and rejecting the lists corresponding to the frequency from the normalized matrix; calculating a potential function of the processed matrix; searching a peak value of the potential function; and determining source number estimation and hybrid matrix estimation. The device comprises an inputting module, a processing module and an outputting module. By the firm underdetermined blind separation source number and hybrid matrix estimating method and device, source signal number and a hybrid matrix of an underdetermined blind separation system for cyclic stationary signals can be estimated precisely; and observation signals are processed by a frequency spectrum correcting method, and the potential function can be gained quickly, follow-up calculated amount is reduced, and timeliness is improved.

Relating to the technical field of heat resistant composite materials, the invention discloses an ultrafine silicon carbide high silica fiber reinforced phenolic heat resistant composite material. The composite material comprises the following raw materials by weight: ammonia phenolic resin, glass fiber, superfine aluminum hydroxide, mica, silicon carbide, a silane coupling agent, calcium stearate and silicon nitride, etc. The composite material provided by the invention has good molding processability, a formed part has a smooth surface and high production and processing efficiency, and the product has high comprehensive yield. Artificial weather modification rocket projectile parts made from the material have excellent heat resistant and ablation resistant properties, and can meet the heat resistant and ablation resistant performance requirements of rocket projectile engine parts. The preparation method of the ultrafine silicon carbide high silica fiber reinforced phenolic heat resistant composite material provided by the invention can be completed by general industrial equipment, has low requirement for equipment complexity, and has the advantages of easy operation, stable process and high production efficiency, thus being suitable for large-scale industrial production.

The invention provides a hybrid polarization double-channel ground penetrating radar system and relates to ground penetrating radars. The hybrid polarization double-channel ground penetrating radar system is provided with a double-channel vector network analyzer, a hybrid polarization antenna array and a computer. The analyzer is connected with the antenna array through a coaxial line. The computer is connected with the analyzer through a GBIP data line. The analyzer is provided with a radar host, a transmitter, a first receiver and a second receiver. The antenna array is provided with a circular polarization plane spiral transmitting antenna and linear polarization receiving antennas. The transmitting antenna is connected with the transmitted signal output end of the transmitter. The first linear polarization receiving antenna is connected with the input end of the first receiver. The second linear polarization receiving antenna is connected with the input end of the second receiver. The first linear polarization receiving antenna is perpendicular to the second linear polarization receiving antenna. The transmitting antenna is parallel to the principal axis direction of the two receiving antennas. The approximate phase centers of the transmitting antenna and the two receiving antennas are located on the same horizontal plane and form an isosceles right triangle, namely the distances from the aperture centers of the two receiving antennas to the center of the transmitting antenna are equal.

The invention discloses a method for constructing a human body posture reference image library. According to the method, different human body posture movements are sequentially constructed into an induction video game; a player executes the corresponding movements according to the induction video game; image acquisition equipment is utilized to acquire a posture image of the player at a preset time point or a preset event position; the posture images of different players at the same time point or the same event position are classified into the same type; a plurality of posture images in the same type are subjected to feature extraction and clustering analysis; the posture images with low confidence coefficients are deleted; the left posture images with high confidence coefficients are correlated with the human body posture movements at the corresponding time points or the corresponding event positions in the induction video and are labeled; the human body posture reference image library is constructed. The method has the obvious effects that the operation of collecting a great number of human body posture pictures and then carrying out manual screening and calibration does not need to be carried out; a great amount of manpower and material resources are saved; meanwhile, a complex human body posture identification algorithm does not need to be used; the efficiency is improved.

Disclosed are an uplink HARQ transmission method and a communication device, and relate to the field of communications, capable of shortening the waiting time of uplink transmission of a terminal andimproving network performance. The uplink HARQ transmission method comprises the following steps: on a first uplink carrier, sending a first transmission block to access network equipment through a first HARQ process; and on a second uplink carrier, sending a second transmission block to the access network equipment through the first HARQ process, wherein the second transmission block and the first transmission block are transmitted in a time division multiplexing TDM mode.

The invention provides a wireless sensor network node positioning method which comprises the following steps of: S1, respectively broadcasting a message by each anchor node in a network, and making an unknown node detect the messages of the anchor nodes and exchange the own detected message with that detected by an adjacent unknown node; S2, forming a triangle by any three anchor nodes in the network, testing whether each triangle comprises the unknown node, and marking the triangle including the unknown node; S3, uniformly dividing the network into a plurality of grids, endowing an initial value 0 to each grid, if a grid is partially or completely covered by the triangle including the unknown node, adding 1 to the value corresponding to the grid, otherwise, subtracting 1 from the value corresponding to the grid; and S4, obtaining the grid with the maximum value after overlapping the triangles, and obtaining a mass center of a triangle overlapping region in the grid with the maximum value, wherein the mass center is the position of the unknown node.

The invention provides a theft-proof label used in a sound-magnetic electronic article monitoring system, which comprises a box body, wherein an amorphous resonance sheet and a bias magnetic sheet are arranged in the box body, and the bias magnetic sheet is made from carbon steel; and the bias magnetic field strength of the bias magnetic sheet is more than or equal to 2.5Oe and is less than or equal to 4Oe, and the size of length, width and thickness is between 30 x 4 x 0.05mm and 32 x 6 x 0.1mm. The invention breaks through the traditional design idea of the anti-theft label, uses non-rectangular magnetic carbon steel as the bias magnetic sheet, and combines and uses the carbon steel as the bias magnetic sheet so as to enable the various parameters of the theft-proof label to meet use requirements by reducing the bias magnetic field strength to 2.5 to 4Oe; in addition, the carbon steel needs not to be subject to heat treatment and can be used as a material of the bias magnetic sheet by direct cold rolling, thereby significantly reducing the cost of the anti-theft label.

The invention relates to a battery state-of-charge estimation method based on open-circuit voltage calibration, and the method comprises the steps: taking a difference value between a terminal voltage of a battery equivalent circuit model and an actual battery terminal voltage as the input of a feedback correction controller, and regulating and controlling the working state of the battery equivalent circuit model through a current value outputted by the feedback correction controller; and enabling the terminal voltage of the battery equivalent circuit model to change along with the actual battery terminal voltage in real time, thereby continuously calibrating the open-circuit voltage of the battery equivalent circuit model, and obtaining an actual battery state-of-charge estimation value. The method is high in estimation precision, simple, feasible and easy to implement.

The invention discloses a thermosetting glass fiber reinforced phenolic composite material for injection and a preparation method thereof. The composite material is prepared from the following raw materials: phenolic resin, glass fibers, superfine aluminum hydroxide, mica powder, zinc stearate, a silane coupling agent, polyvinyl acetal modified thermosetting phenolic resin and the like. The thermosetting glass fiber reinforced phenolic aldehyde composite material for injection can be formed by utilizing injection molding and mould pressing processes, the injection molding manufacturability is good, the surface of a formed part is flat and smooth, continuous production can be realized through the injection molding, the efficiency is improved, and the comprehensive yield of products is high; injection molding of the material can be operated mechanically in the whole process, operators are reduced, labor intensity is reduced, and production efficiency is improved; and parts prepared from the material are high in curing speed and high in production efficiency, and have good technical economy.

The invention is applicable to the field of underwater acoustic communication technology, and provides a method and apparatus for decoding underwater acoustic signals, and a method and apparatus for sending the underwater acoustic signals. The method comprises the following steps: receiving a first underwater acoustic signal and a second underwater acoustic signal; separately decoding the first underwater acoustic signal and the second underwater acoustic signal through a preset first decoding rule to obtain a first decoding result; and if the first decoding result indicates that the decoding of both of the first underwater acoustic signal and the second underwater acoustic signal is failed, performing cross decoding on the first underwater acoustic signal and the second underwater acoustic signal through a preset second decoding rule to obtain a second decoding result. According to the method provided by the invention, two paths of underwater acoustic signals having completely the same contents are obtained at the same time, independent decoding and cross decoding are separately performed on the two paths of underwater acoustic signals to attempt to obtain correct underwater acoustic signals for decoding, and the problem that the existing underwater acoustic communication technology mainly improves the communication reliability through a large number of check bits and a complex check algorithm, resulting in low communication efficiency and large decoding operation amount, is solved.

The invention discloses a non-revolving scroll installation mechanism of a scroll compressor and an installation method thereof. One of the parts of each installation mechanism is installed on the non-revolving scroll, and the other part is installed on the frame. Each installation mechanism is provided with a sliding mating surface, and the non-revolving scroll is installed by using this installation mechanism. On the frame, a small amount of axial movement of the non-orbiting scroll is allowed in the direction away from the orbiting scroll. The use of this installation mechanism can ensure that the processing accuracy and processing cost are reduced without reducing the assembly accuracy requirements, so that when the scroll compressor is working normally, the non-revolving scroll and the end plate surface of the revolving scroll are in close contact; When an abnormality occurs, the non-revolving scroll and the orbiting scroll can be separated in time to ensure the reliability of the compressor under severe working conditions.

The invention discloses a large-scale glass air sucker device, which comprises a columnar shell, one end of the columnar shell is provided with a connecting plate with an integral structure with it, and the other end of the columnar shell is provided with a mosaic plate structure, so A rubber sucker mechanism is inlaid on one end of the columnar housing at the mosaic plate structure, an air transfer chamber is arranged at one end of the rubber sucker mechanism inside the cylindrical housing, and a connecting rubber sucker is arranged at one end of the air transfer chamber The first air inlet is used for the transfer of the mechanism, and a manual air valve is arranged inside the cylindrical housing. The invention has an independent air pressure chamber, which reduces the requirement for the complexity of the equipment, and at the same time, can reduce the manufacturing cost of the equipment. In addition, the device has a suction pressure control mechanism, which can control the magnitude of the suction, thereby controlling the effect of the suction on the glass. The size of the force reduces the influence of the suction on the performance of the glass.

The invention discloses an image signal processing method for interactive multi-viewpoint video system, coding and storing multi-viewpoint video signal code streams and complete disparity field code streams between related viewpoints, obtained in different forecasting modes, and using fedback user end viewpoint selection information and display unit type information to properly select a viewpoint (used for single eye display) or two viewpoints (used for 3D display) or at most four viewpoints (used for 3D display of two virtual viewpoints) from the viewpoint-resolvable structural code streams, so as to implement partial transmission of multi-viewpoint video signals and reducing system's requirements for transmission bandwidth and requirements for user end system complexity, making it able to transmit more programs and service more users in the given network bandwidth and making the cost of a digital interactive multi-viewpoint TV receiver be lower.

The invention relates to an alarm information generation method and device, wearable equipment and a computer readable storage medium. The method comprises the following steps: collecting heart rate information of a wearer from a first limb and a second limb of the wearer; transmitting driving optical signals to the limbs of the wearer, and acquiring pulse rate information of the wearer according to an echo optical signals reflected by the limbs of the wearer; and when the heart rate information of the wearer and the pulse rate information of the wearer meet preset conditions, generating alarm information for prompting the heart rhythm condition of the wearer. The heart rate information is obtained by making contact with the two limbs of the wearer to establish lead, the pulse rate information is obtained by transmitting the driving optical signals and receiving the echo optical signals, a complex measurement control circuit is not needed, and the device can be directly integrated on the wearable equipment. Only the heart rate information and the pulse rate information need to be detected to generate the alarm information, the requirement for algorithm complexity is low, and the heart rhythm condition of the wearer can be conveniently monitored in real time and prompted in time.

The invention discloses a PCB and PIN crimping device and a use method thereof. The PCB and PIN crimping device comprises a supporting unit, a power unit and a conveying unit, wherein the structural form of the supporting unit is a bracket with a base, the supporting unit is used for bearing the power unit and the conveying unit, the power unit and the conveying unit are located on the bracket, the power unit is connected with the bracket and used for clamping a PCB and completing crimping, and the conveying unit is connected with the base and used for conveying the PCB to the position below the power unit. The use method of the PCB and PIN crimping device is that a PCB carrying seat transferring pneumatic module is matched with a product to convey a PCB to the position below a PCB clamping module in the presence or absence of a sensor, a clamping jaw penetrates through a positioning hole formed in the PCB to pick up the PCB, secondary positioning is achieved through a PCB secondary positioning pin and a positioning pin hole formed in a tray, and when the PCB gets close to a shell, the clamping jaw is loosened, and the device continues to descend to complete press fitting, so thatthe production efficiency and the yield of products are improved, and the manufacturing cost of customers is reduced.

The invention is applicable to the field of underwater acoustic communication technology, and provides a method and apparatus for decoding underwater acoustic signals, and a method and apparatus for sending the underwater acoustic signals. The method comprises the following steps: receiving a first underwater acoustic signal and a second underwater acoustic signal; separately decoding the first underwater acoustic signal and the second underwater acoustic signal through a preset first decoding rule to obtain a first decoding result; and if the first decoding result indicates that the decoding of both of the first underwater acoustic signal and the second underwater acoustic signal is failed, performing cross decoding on the first underwater acoustic signal and the second underwater acoustic signal through a preset second decoding rule to obtain a second decoding result. According to the method provided by the invention, two paths of underwater acoustic signals having completely the same contents are obtained at the same time, independent decoding and cross decoding are separately performed on the two paths of underwater acoustic signals to attempt to obtain correct underwater acoustic signals for decoding, and the problem that the existing underwater acoustic communication technology mainly improves the communication reliability through a large number of check bits and a complex check algorithm, resulting in low communication efficiency and large decoding operation amount, is solved.

The invention provides a domestic wastewater microprocessing system for high-rise buildings. Water is divided into four levels according to the purposes of daily domestic water of residents, the requirements for the water quality standard, the dependency, the processing degrees and the like. The first-level domestic wastewater and the second-level domestic wastewater of upper-floor users of the high-rise buildings are purified by a miniature purification treatment system, the purified water is taken as third-level and four-level domestic water of lower-floor users having relatively low requirements for the water quality standard, therefore, the water supply load of a tap water factory and the workload of a sewage treatment factory can be effectively reduced, thus the running safety of the whole water supply system and the sewage disposal system are guaranteed, and safe and efficient domestic water is provided for residents. The unnecessary energy consumption of the intermediate link is reduced, and finally, the purposes of energy conservation as well as no pollution and environment protection are achieved in the real sense.