34results about How to "Realization rate" patented technology

The invention discloses a mobile Sink path planning method for an underwater heterogeneous sensor network. The method comprises the following steps: a dual-layer topology network structure is established; an optimal aggregation node laying location is selected by adopting a fitness function and a grid method; a mobile Sink plans the shortest mobile path and mobiles to transverse all aggregation nodes; a shore-based monitoring center sends a remote control command to the mobile Sink in a multi-hop way through the aggregation node upper network; the mobile Sink changes the mobile path in real time according to the control command. The collection and transmission of the network monitoring data are realized through a multi-mode communication way of the underwater sound and laser communicationand the mobility of the mobile Sink, thereby effectively improving the bottleneck problem that the underwater communication rate and the distance are in conflict.

The invention discloses a channel estimation method for a passive intelligent reflection surface based on deep learning. The channel estimation method is realized by an offline channel estimation stage and an online channel prediction stage. In the off-line channel estimation stage, in an uplink, a user side sends a pilot signal, a base station side controls an IRS to sequentially open passive elements to reflect an incident pilot signal, and the base station side receives the pilot signal and estimates corresponding cascade channel information through adoption of a minimum mean square error method. An equal probability uniform sampling method is adopted to select a small amount of sampling cascade channel information from the estimated cascade channel information, and the small amount of sampling cascade channel information and complete cascade channel information are adopted to construct a new data set; and in the online channel prediction stage, the base station side estimates a small amount of sampling cascade channel information online and inputs the sampling cascade channel information to the trained ResNet network to recover complete cascade channel information. According to the invention, the number of passive elements can be flexibly selected and the residual units of the residual neural network can be set so as to meet the service quality characteristics of different systems and users.

The invention relates to an intelligent four-quadrant flood regulation method for middle-sized and small-sized reservoirs. According to the intelligent four-quadrant flood regulation method, the rainfall-runoff relation P+W0-R or W, the peak discharge relation R or W-Qm, the flood regulation relation V-Q, the relation between the total primary flood amount, the rise reservoir capacity and the maximum reservoir water storage W-V<qi>-Vm are drawn in a four-quadrant diagram relating to centering; the runoff depth R or the total primary flood amount W corresponding to the precipitation P is obtained according to the peak discharge relation R or W-Qm curve; the Qm corresponding to the runoff depth R or the total primary flood amount W is obtained according to the peak discharge relation R or W-Qm curve; and the Vm corresponding to the runoff depth R or the total primary flood amount W is obtained according to the relation curve between the total primary flood amount, the rise reservoir capacity and the maximum reservoir water storage W-V<qi>-Vm; and the intersection point of a straight line between the Qm and the Vm and the flood regulation V-Q curve is obtained, and the reservoir capacity V and the spillway discharging capacity Q afteer flood regulation are obtained. According to the intelligent four-quadrant flood regulation method, the relevant curves of the reservoir inflow prediction and reservoir flood routing calculation of the reservoirs are drawn on the diagram, the setting time of a flood regulation scheme can be shortened, and the prediction timeliness of the small-sized reservoirs is effectively improved.

The invention discloses a power line broadband carrier based concentrator communication module. The power line broadband carrier based concentrator communication module comprises a three-phase carrier signal coupling circuit, a three-phase time-division transceiver circuit, a power line carrier filtering circuit, a sending amplification circuit, a zero-cross detection circuit, a power line carrier processor, a GPRS (General Packet Radio Service) communication module and a routing circuit, wherein an acquisition terminal of the three-phase carrier signal coupling circuit is connected with a power line, the three-phase carrier signal coupling circuit is connected with the power line carrier processor through the three-phase time-division transceiver circuit and the power line carrier filtering circuit, an input terminal of the zero-cross detection circuit is separately connected with the power line and the three-phase carrier signal coupling circuit, an output terminal of the zero-cross detection circuit is connected with the power line carrier processor, a sending terminal of the power line carrier processor is connected with the three-phase time-division transceiver circuit through the sending amplification circuit, and the GPRS communication module and the routing circuit are in communication connection with the power line carrier processor separately. According to the power line broadband carrier based concentrator communication module, long-distance networking communication transmission can be achieved, a networking mechanism is high in timeliness, and the networking time is short.

The aim of the invention is to measure, under laboratory conditions, soil phase transformation-constitutive coupling law in piping processes, and namely to disclose a testing device for testing the soil phase transformation-constitutive coupling law, and a method. Through use of the method and the device, simulation and measurement of critical states and phase transformation rates of soil phase transformation in the piping processes under different stress conditions can be realized, and the measurement of influences of the soil phase transformation on soil stress-strain relationship also can be realized.

The invention particularly relates to a water quality mathematical model optimization method based on big data and parallel computation. The water quality mathematical model optimization method includes carrying out packet processing on massive data needed for the model operation, optimizing the calibration and operation process of a traditional water quality mathematical model by a parallel calculation method, and carrying out dynamic integration and evaluation on data of the calculation results, thus improving the quality of the water quality mathematical model, the computing efficiency andthe precision of computing results. The water quality mathematical model optimization method based on big data and parallel computation solves the problems of model calibration and calibration causedby insufficient measured data and the long processing time of super big file water quality data, can carry out grouping and high-efficiency processing on enough hydrological data, also realizes calibration and correction of the water quality mathematical model, solves the difficulty of super-big file processing and low efficiency, and improves the calculation efficiency of water quality mathematical model.

The invention relates to an oil field associated gas recycling device and method, and belongs to the technical field of natural gas hydrate application. Through the improved design of a low-temperature separator structure, oil field associated gas enters the low-temperature separator to realize multi-section removal of heavy hydrocarbon after primary separation and low-temperature cooling; a firstrefrigerating system and a second refrigerating system are designed, so that flow of each pipeline refrigerant is regulated and controlled through a data monitoring unit; a field process is combined,a hydrate prizing production device integrating heavy hydrocarbon removal, boosting, liquid storage, hydration reaction, hydrate slurry external conveying treatment and a refrigerating unit is provided. According to the oil field associated gas recycling device and method provided by the invention, oil field associated gas is converted into hydrate, so that associated gas heavy hydrocarbon removal, hydrate quick preparation, hydrate generation speed calculation, generation amount control and the like can be realized, so that part of the resource waste problems due to the fact that associatedgas of a far oil field without pipeline facilities or not worthy of laying pipelines can be effectively solved.

The invention relates to an automatic slicing mechanism for strip-shaped vegetables and fruits. The automatic slicing mechanism comprises a base, a workbench, a feeding slide way, a vegetable and fruit limiting groove, a rotary cutter blade, a slicing baffle, a rotary baffle, a transmission assembly and four sliding baffles. The lower end face of the workbench is provided with a rectangular slide rail. The vegetable and fruit limiting groove is arranged at a discharging outlet in the lower end of the feeding slide way. One end of the vegetable and fruit limiting groove is provided with the slicing baffle. The rotary cutter blade is arranged between the vegetable and fruit limiting groove and the slicing baffle. The transmission assembly comprises a rotary shaft and three five-blade rotating wheels. According to the automatic slicing mechanism for the strip-shaped vegetables and fruits, automatic feeding and slicing can be achieved through the four sliding baffles moving along the rectangular slide rail, and the three five-blade rotating wheels, the structure is uncomplicated, control is easy, the switch on-off frequency can be adjusted only by controlling the traveling speed of the four sliding baffles, accordingly the strip-shaped vegetables and fruits can enter the groove, and the slicing speed is ensured.

The invention discloses a network transmission method and system based on minimum completion time. The system comprises a sending end based on clear rate control, a switch with a flow scheduling function and a receiving end for returning control information. By use of all flow information of already congested links of a router, through adoption of a coefficient expansion method based on the minimum completion time, priorities are distributed for all flows on the links, and through cooperation with the sending end and the receiving end, online flow scheduling and distributed rate control are realized. The invention brings forward a measurement mode of taking a completion time expansion coefficient as network transmission efficiency for describing the distance between actually obtained congestion resources from a certain flow and the reality. Through a minimum completion time expansion coefficient algorithm, the flow scheduling is enabled to be relatively fair, based on this, the average task completion time of a data center is reduced, and the network transmission efficiency of the data center is effectively improved.

The invention includes following parts and flow: unit of data switching and rate adaptation leads up- going 32Kbps code stream and up-going 64Kbps code stream of base station into equipment in base station; down-going 64Kbps code stream and down-going 32Kbps code stream are led into unit of data switching and rate adaptation; under control of time control unit, series-parallel conversion is carried out for four routes of code streams respectively; and the converted result is latched to register set for channel data respectively according to channel; based on type of service and allocation of users' channels, external CPU selects units of data register needed to output through unit of alteration switch; under control of time control unit, the data in selected register are output serially through unit of parallel - series conversion. The invention is realized through software programming on programmable device. Features are: no dedicated exchange chip needed, saving cost etc.

The invention discloses a message passing-based user grouping and power distribution method under a millimeter wave MIMO-NOMA system, which comprises the following steps of: (1) acquiring downlink channel information of a user by a base station, and performing analog pre-coding; and (2) providing a user grouping algorithm based on a minimum summation message passing strategy in order to maximize the weighted sum rate of the system, and obtaining a matching result of the user and the radio frequency chain. and (3) adopting zero-forcing digital precoding to suppress inter-group interference, and adopting a low-complexity power distribution method to maximize the weighting and rate of the system. According to the invention, the spectrum efficiency of the system can be effectively improved, hardware resources of the system are fully utilized, and the method can be used for multi-user data transmission.

The invention discloses a NOMA-based MISO network safety rate and maximization method, comprises the following steps: obtaining the base station transmitting power (img file = '577910DEST_PATH_IMAGE001. TIF' wi= '28' he= '31'/) and the channel state information of the communication channel in the current network; setting the energy allocation coefficient for the legitimate user (img file= '716767DEST_PATH_IMAGE002. TIF' wi= '51' he= '47'/) and the minimum secure information rate requirement (img file= '972299DES T_PATH_IMAGE003. TIF 'wi=' 46 'he=' 39 '/), converting the problem to an expression (img file= '487594DEST_PATH_IMAGE004. TIF' wi= '38' he= '31'/); by removing the outage probability constraints from the problem (img file= '662748DEST_PATH_IMAGE004. TIF' wi= '38' he= '31'/), converting the problem to an expression (img file= '972507DEST_PATH_IMAGE005. TIF' wi= '43' he= '31'/).By combining the equations with one-dimensional linear search, the sum of the maximum safety rate of the system is obtained (img file = '715335DEST_PATH_IMAGE005. TIF' wi= '43' he= '31'/). Compared with the traditional research, the invention proposes NOMA-based security rate and maximization method inMISO network, and the method of equations combined with one-dimensional linear search to replace the two-dimensional linear search scheme with large computational load, accords with the development trend of future mobile communications, and has the advantages of wide application and strong practicability.

The invention discloses a signal playback method for a signal playback module based on a ground load detector, and the method comprises the following steps that an FPGA receives a data signal from a main control computer through a PCIe bus, and the data signal is temporarily stored in a DDR buffer memory; the FPGA receives a triggering signal from the main control computer through the PCIe bus and starts the signal playback; the FPGA carries out the filtering and modulation of the data signal, and enables the data signal after filtering and modulation to be transmitted to a digital-analog conversion circuit; the digital-analog conversion circuit carries out the digital-analog conversion of the data signal, obtains an analog signal, and outputs the analog signal to a filter circuit; and the filter circuit filters out a spurious signal in the analog signal and enables the analog signal to be outputted to external equipment through two DA output terminals. The method can achieve the transformation and modulation of data rate of a specific data source, and outputs a radio frequency signal meeting the requirements of indexes.

The invention discloses a seven-lens visual inspection machine for bottle cap image visual screening, which comprises a supporting base, a supporting frame is arranged on the periphery of the top of the supporting base, a spacing assembly is arranged on one side of the top of the supporting base, and a tail end switcher is arranged on the other side of the top of the supporting base. A first conveying belt and a second conveying belt are arranged between the spacing assembly and the tail end switcher, a double-camera assembly is arranged in the middle of the first conveying belt, a five-camera assembly is arranged at the bottom of the second conveying belt, and waste recycling assemblies are arranged on the sides, away from the spacing assembly, of the first conveying belt and the second conveying belt; suction devices are arranged on the two sides of the bottom in the supporting base, and two pneumatic devices are arranged on the top in the supporting base. The bottle cap screening device has the beneficial effects that by arranging the seven-lens module formed by combining the double-camera assembly and the five-camera assembly, 360-degree omnibearing monitoring can be carried out on the inner wall and the outer wall of a bottle cap, and the image resolution is greatly improved, so that the bottle cap screening accuracy is improved.

The invention discloses a mine roadway fixed-point hydrogen sulfide collection device and method. The device comprises a remote controller and a trailer. A motor and a bearing alloy plate are arrangedon the trailer; an alloy steel round rod is arranged between the bearing alloy plate and the front end of a thickened alloy plate; an arc steel plate is arranged between the bearing alloy plate and the rear end of the thickened alloy plate; the arc steel plate is provided with an operation table with an operation button; a ranging module is arranged at the front end of the thickened alloy plate;a sliding conical cylinder sleeves the alloy steel round rod; and the front end of the sliding conical cylinder is connected with a plurality of collection cavities for collecting roadway hydrogen sulfide at fixed points. The remote controller controls the roadway fixed-point hydrogen sulfide collecting device to move forwards and stop when reaching the set head-on distance of the front roadway, controls a sliding conical cylinder to move forwards until the 2 # and 3 # concentric reducer pipes are away from intersection points A and B of the middle line and the left and right sides of the roadway and the 1 # concentric reducer pipe is away from the height H right above the middle point c of the roadway bottom plate, and a gas sample is collected in real time. The device is simple in structure, automatic in control and safe in gas production.

The embodiment of the invention discloses a data transmission device, comprising a transmitting end and a receiving end. The transmitting end comprises: an encoding module and a display module, whichare connected to each other, wherein the encoding module is used for obtaining transmission data, and generating n frames of original data frames and m frames of inter-frame error correction data frames according to the transmission data, n and m are both natural numbers greater than 1, generating n+m frames of intra-frame error correction images according to n frames of original data frames and the m frames of inter-frame error correction data frames; the display module is used for displaying the n+m frames of intra-frame error correction images; the receiving end comprises: a decoding moduleand an image collection module, which are connected to each other, wherein the image collection module is used for obtaining multiple frames of intra-frame error correction images displayed by the display module; and the decoding module is used for restoring the transmission data obtained by the encoding module according to the multiple frames of intra-frame error correction images. The data transmission device provided by the embodiment of the invention has a data one-way transmission function under physical isolation conditions, and can realize the reliability and high rate of data transmission.

The invention discloses a motor terminal voltage measuring instrument of an alternating current frequency conversation motor, and aims to solve the problems that if errors of motor terminal voltages which are acquired by converting collected direct current bus voltages are large or if the motor terminal voltages are directly measured, due to the characteristics of PWM square waves, high digital sampling frequency and high-speed digital signal processing are needed, and an ordinary controller can not meet the requirements. The measuring instrument (5) comprises a sensor, a sampling resistor, an AD sampling module and an FPGA. The input end of the sensor is electrically connected with the output end of an inverter (2), the output end of the sensor is electrically connected with one end of the sampling resistor, the other end of the sampling resistor is electrically connected with the signal input end of the AD sampling module, and the signal output end of the AD sampling module is connected with the input end of the FPGA through an I/O port. The input port of the measuring instrument is electrically connected with the output end of the inverter (2) through the sensor, and the output port of the measuring instrument is electrically connected with the input end of a motor controller (4) through the FPGA (field programmable gate array).

The invention discloses a milk brewing machine intelligent control system based on the Internet of Things. The milk brewing machine comprises: a shell; a brewing part which is provided with a cavity capable of opening and closing the accommodating space, wherein the brewing part is located on the outer side wall of the shell and used for brewing milk powder; a water adding part, wherein the wateradding part is located in the shell and used for adding water from the outside and temporarily storing the water, and the water adding part is communicated with the brewing part through a first pipeline; a heating part, wherein the heating part is arranged in the shell and is used for heating the water; a storage part, wherein the storage part is used for temporarily storing milk powder and is connected with the brewing part, the storage part comprises an outlet, and the storage part can freely slide down to enable the milk powder to fall into the brewing part; a plurality of sensing devices,wherein the plurality of sensing devices are arranged in the shell and are used for monitoring the water temperature and the milk powder discharging amount in the milk brewing machine and transmittingmonitoring information to the intelligent control module through any one of WIFI, RoLa or NBIoT, and the milk brewing machine is intelligently controlled to quantitatively guide out milk powder and the water amount and control the water temperature; the milk brewing machine intelligent control system is widely applied to the field of milk brewing machine intelligent control.

The invention provides a double-shaft independent regulation and control motor. The double-shaft independent regulation and control motor at least includes a rotating shaft, a rotor, and a stator. Therotating shaft at least includes a first rotating shaft 11 and a second rotating shaft 12. The rotor at least includes a first rotor 21 and a second rotor 22. The stator at least includes a first stator 31 and a second stator 32. The first rotor 21 and the second rotor 22 are arranged on the first rotating shaft 11 and the second rotating shaft 12. The first stator 31 and the first rotor 21 are cooperated to provide power to the first rotating shaft 11. The second stator 32 and the second rotor 22 are cooperated to provide power to the second rotating shaft 12. By using the double-shaft independent regulation and control motor, double shafts are independent and a rotating speed is accurately controlled; and steering can be switched randomly without changing a phase sequence or positive and negative connection of a power supply so as to achieve an arbitrary speed ratio and steering output of two ends of the rotating shaft.