44results about How to "Solve the attenuation problem" patented technology

The invention provides a wireless and ultrasonic composite location system and a location method for the wireless and ultrasonic composite location system, wherein the wireless and ultrasonic composite location system comprises a plurality of beacon modules with fixed positions, at least one mobile location module and an electronic location platform; each of the beacon modules comprises a first wireless receiving and sending module, an ultrasonic transmitting module and a first intelligent processing module; the mobile location module is arranged on a mobile object, and comprises a second wireless receiving and sending module, an ultrasonic receiving array, an array processing module and a central processer; the electronic location platform is used for building an electronic map and sending the electronic map to the mobile location module, and is also used for coordinating the synchronization of the beacon modules and the mobile location module. The invention also comprises the location method for the wireless and ultrasonic composite location system. By adopting the system and the method, the problems of multipath effect and none-line-of-sight are solved, the measurement precision is improved, and the theoretical precision of less than 0.1mm can be reached.

The invention relates to a robot location navigation system and navigation method. The robot location navigation system comprises a plurality of beacon modules, at least one robot location terminal and an electronic navigation platform; each beacon module comprises a first wireless receiving-transmitting module, an ultrasonic transmitting module and a first intelligent processing module; each robot location terminal comprises a second wireless receiving-transmitting module, an ultrasonic receiving array, an array processing module and a central processor; the electronic navigation platform is used for storing codes of all robots, establishing an electronic map, planning and calculating a motion target or path of the robot as well a position of the beacon module and dispatching the robot to avoid a barrier and also used for coordinating the synchronism of the beacon module and the robot location terminal and receiving position coordinate data uploaded by each robot location terminal. The invention also relates to a navigation method of the robot location navigation system. By adopting the robot location navigation system and navigation method, the multi-path effect and non-line-of-sight propagation problem can be solved, the measurement precision can be improved, and automatic location is implemented.

The invention discloses an emotion feature representation learning system and method based on global interaction and syntactic dependence. The emotion feature representation learning method comprisesthe steps: through the information interaction of contexts and evaluation objects, introduction of a word syntactic dependence relationship and feature joint learning, employing a pre-trained multi-layer language model for carrying out embedded representation on the words, and obtaining more contextualized representation of the words; solving the problem of insufficient interaction caused by independent modeling of contexts and evaluation objects in a previous method by utilizing a superior lifetime double-sentence task mode of a BERT structure. According to the method, a graph dependence attention network is provided, the problem that the graph dependence attention network does not distinguish influences of different dependence relations is solved; meanwhile, the syntactic relation of comments is reasonably modeled into a model, and words are made to represent syntactic dependence information; according to the method, a feature joint learning method is used, interaction information and syntax dependence information of comments are fully combined, and therefore the accuracy of emotion analysis of the evaluation object is improved.

The invention discloses a mobile robot positioning and mapping method, and relates to the technical field of robot positioning. The mobile robot positioning and mapping method comprises the steps of initializing the position of a mobile robot and a raster map of each resolution; estimating the possibility that the tail ends of laser beams in each raster map is occupied; iteratively solving the position change data, in the raster map with the lowest resolution, of the mobile robot from the last moment to the current moment; initializing a particle set; updating the position of the mobile robotin each particle; selecting a target particle and expanding the particle set; scanning the matching degrees between the particles in the particle set and the corresponding raster maps; calculating theweights of the particles in the expanded particle set; updating the corresponding maps according to the positions of the robot in the expanded particle set; selecting standby particles; and updatingthe raster map with the lowest resolution. The mobile robot positioning and mapping method is capable of solving the problem that the traditional particle filter-based SLAM systems are relatively large in positioning error and inaccurate in map due to wheeled speedometer errors.

The invention provides an array substrate, a touch control display device and a driving method thereof. The array substrate comprises a grid drive circuit and a touch control drive circuit arranged in a non-display area. The touch control drive circuit comprises multiple stages of touch control selection output units. Each stage of touch control selection output unit comprises two gating signal input ends, and secondary triggering signal output ends of two adjacent shifting registers in the grid drive circuit provide gating signals. The array substrate provides a simplified touch control drive circuit, thereby being easy to realize design of a narrow frame, reducing signal input ends and lowering IC cost. All touch control drive electrodes can be scanned once in each half frame, so that two times of frame frequency of point report rate is realized. The two stage of touch control selection output unit can simultaneously provide touch control signals at two ends of each touch control drive electrode, thereby effectively preventing driving signal attenuation caused by driving signal provision by a single side, and enhancing the intensity of the driving signal.

The invention provides a photovoltaic inverter system and a potential-induced-degradation (PID) effect compensation method and apparatus thereof. A processing control unit records operation conditions of all photovoltaic assemblies and determines a PID effect compensation condition and thus carries out optimized calculation of a compensation voltage, thereby controlling an integrated PID compensation unit to carry out PID effect compensation on the photovoltaic assemblies and thus realizing PID effect compensation repairing. Therefore, a photovoltaic assembly attenuation problem in the photovoltaic power station can be solved effectively and the generating capacity of the system can be improved. Compared with the prior art, the system, method and apparatus provided by the invention enables the practical operation reliability to be improved and the maintenance cost to be reduced.

The invention relates to a roller-way-type solar cell irradiation annealing furnace which can be used for irradiation annealing treatment of solar cells. In the irradiation annealing furnace, cell pieces are transmitted on a group of horizontally-arranged roller ways, light sources and a heating device are arranged above and below the roller ways respectively or below and above the roller ways respectively, and the fronts face the light sources while the backs face the heating device when the cell pieces are transmitted. The cell pieces after being sintered are continuously transmitted through the roller ways, and irradiation annealing treatment is completed continuously in the process of horizontal advancing, so that the roller-way-type solar cell irradiation annealing furnace has the advantages of low energy consumption, stability in running, high capacity and continuous production, and the problem of attenuation in the process of using solar cells can be solved to greatest extent after the furnace is popularized and utilized.

The invention discloses a mechanical adherent flexible coupling probe for geological detection. The probe comprises a sleeve and an oscillating wave sensor mounted in the sleeve. The problem is characterized in that the front end of the sleeve is provided with an axially flexible mechanical limiting head, and a prime mechanism is mounted in a cavity in the middle of the sleeve, and connected with a radial expansion mechanism. After being driven by a prime force, the prime mechanism drives the radial expansion mechanism to expand outwardly from the sidewall of the sleeve. The mechanical adherent flexible coupling probe for geological detection has the advantages that installation is convenient, recovery is easy, the manner by using button as couplant is replaced, long-term interference fit between the probe and a hole wall is ensured, and the signal transmission effect is ensured.

The invention relates to a salt-cavern gas storage gas-liquid interface measurement method and system based on a low-frequency electric signal. The method comprises the steps of: applying a low-frequency current signal to a central tube by an excitation source; measuring the voltage of a central pipe below the insulating short section, and calculating the impedance Z lower at the lower end of the insulating short section according to the low-frequency current signal<lower>; according to the definition of the low-frequency current signal, the voltage of the central pipe below the insulation short section and the impedance Z<lower> of the lower end of the insulation short section, determining a calculation equation of the distance H between the insulation short section and a gas-liquid interface; and calculating the distance H between the insulating short section and the gas-liquid interface according to the impedance Z<lower> at the lower end of the insulating short section and the calculation equation. Measurement of a salt-cavern gas storage gas-liquid interface is realized by utilizing the property that the characteristic impedance of the central tube is far greater than that of saline water, and the gas-liquid interface is not prone to be influenced by an oil pollution environment and sound wave propagation attenuation; and the measuring system provided by the invention has recoverability, has small interference on the use of the salt-cavern gas storage, has good working stability, and effectively reduces the replacement frequency of underground equipment.

The invention relates to a salt-cavern gas storage liquid level measuring system and method based on Poynting vector detection. The system comprises a central pipe, an electromagnetic signal transmitting device, electric field measuring devices, a magnetic field measuring device and a ground host. The central pipe is inserted into a salt-cavern gas storage from a wellhead; the electromagnetic signal transmitting device is arranged on the central pipe; the two electric field measuring devices are respectively arranged on the upper side and the lower side of the electromagnetic signal transmitting device; and the magnetic field measuring device is arranged below the lower electric field measuring device. The electromagnetic signal transmitting device excites an electric field and a magnetic field in a space, and the electric field measuring devices and the magnetic field measuring device measure the electric field and the magnetic field in the space. The ground host calculates the distance between the liquid level and the electromagnetic signal transmitting device through the measured electric field intensity and magnetic field intensity. The scheme can adapt to the severe environment in the gas storage, and the gas-liquid interface height in the gas storage can be accurately measured.

The invention provides an induction method of a high-heterozygosity tetraploid of a new variety of crassostrea gigas 'Haida No.3'. The method comprises the following steps: taking female triploid crassostrea gigas 'Haida No.3' obtained by inhibiting discharge of first polar bodies of fertilized eggs of diploid crassostrea gigas 'Haida No.3' as a female parent; taking a male diploid 'Haida No.3' as a male parent; after the female parent and the male parent are artificially matured, putting ova into seawater to be matured, and when the ova are round through microscopic examination, the ova are matured; conducting insemination on the cured ova and sperms, starting timing after the sperms and the ova are mixed, treating fertilized ova with cytochalasin B, inhibiting discharging of the first polar bodies of the fertilized ova, and collecting and soaking the fertilized ova; and transferring the fertilized ova into a cultivation container for incubation and larva cultivation. The triploid female parent shellfish is obtained by inhibiting the discharge of the first polar bodies of the fertilized ova of the diploid crassostrea gigas 'Haida No.3', and the tetraploid obtained by the triploid female parent shellfish has higher growth advantage due to higher gene heterozygosity.

The invention discloses a method for solving a frequency spectral signal attenuation problem of a Fourier transform ion mobility spectrometer. The method comprises the steps: in the work process of the Fourier transform ion mobility spectrometer, adjusting a gate closing voltage of an ion gate; under each gate closing voltage in the adjustment process, observing a change condition of a signal meanvalue of frequency spectral signals in the process of increasing the frequency of sweep frequency; and according to the change condition of the signal mean value, selecting the gate closing voltage,having the change amplitude of the signal mean value along with frequency increase less than a preset value, as a best gate closing voltage of the ion gate. The method can improve the frequency spectral signals of the Fourier transform ion mobility spectrometer simply and effectively, improve the quality of the signals and improve the sensitivity and resolution ratio of the detection.

The invention belongs to the technical field of industrial X-ray machines and particularly relates to a control system for a wireless integrated X-ray detection apparatus. The control system for the wireless integrated X-ray detection apparatus comprises a PLC (Programmable Logic Controller), a generator pressure detection module, a generator temperature detection module, a power supply module, akilovolt control module, a kilovolt detection module, a controlled silicon driving module and a main circuit module; the PLC is connected with the generator pressure detection module, the generator temperature detection module, the power supply module, the kilovolt control module, the kilovolt detection module, the controlled silicon driving module and the main circuit module; the main circuit module is connected with the kilovolt control module, the kilovolt detection module and the controlled silicon driving module. The control system for the wireless integrated X-ray detection apparatus, disclosed by the invention, has the advantages of high working efficiency, low possibility of being intervened, adjustable parameters, safety and the like.

The invention provides a remote multi-ATE semiconductor test equipment synchronization method and system and a test method. The synchronization method comprises the following steps: a clock sending device sends a clock coding signal embedded with a clock signal to a plurality of test equipment through a high-speed optical fiber; the test equipment receives the clock coding signal, recovers clocks, and adjusts the clocks of the test equipment to be consistent with the clock of the clock sending device according to a clock adjustment system; the clock sending device sends a trigger coding signal embedded with a trigger signal to the plurality of test equipment through the high-speed optical fiber; the test equipment receives the trigger coding signal and returns the trigger coding signal to the clock sending device through the high-speed optical fiber; and the clock sending device adjusts the time point of sending the trigger coding signal according to the time difference in receiving the trigger coding signal. According to the invention, a 25Gbps high-speed optical fiber is used for transmitting signals, so that high-precision and long-distance synchronous clock and synchronous target triggering among the plurality of semiconductor test equipment are realized, and the system has the characteristics of long synchronous distance, low cost and high precision.

The invention discloses a control system for a tension tester. Interference suppression circuits suppress electromagnetic interference by electromagnetic interference suppression circuits. Decouplingcapacitors eliminate crosstalk among signals. LC filter circuits filter out unwanted noise signals. Differential noise suppression circuits enter signal enhancement circuits after suppressing differential mode interference. The signal enhancement circuits adopts a complementary amplifier composed of a triode Q2 and a triode Q3 for amplification, and the conduction angle of a single junction transistor Q1 is changed through the difference signals outputted by a dual comparator and then stably outputted after being inverted and held by an operational amplifier AR2, so that the amplified signalsof the complementary amplifier are adjusted, and the problem of attenuation in signal transmission is solved. Finally, the steady signals which are undisturbed and satisfy the signal amplitude are transmitted to a computer or PLC after being isolated by the isolation output circuit , being stabilized and being filtered, thereby improving the test accuracy of the tension tester. The problems that the PLC and the computer communicate with each other, and the signal distortion and attenuation influence the test precision of the tensile tester are effectively solved.

The invention discloses a photo ionization source capable of automatically tuning signal intensity for a mass spectrum analyzer. The photo ionization source comprises a photo ionization source and a signal automatic tuning system, the photoionization source comprises a vacuum ultraviolet light source, an ion source cavity, a sample introduction pipeline, an ion repulsion electrode, an ion transmission electrode group and a small hole electrode; the signal automatic tuning system comprises a light source power supply, a computer, an optical signal sensor and an AD converter. The vacuum ultraviolet light source and the optical signal sensor are arranged on the two sides of the ion source cavity respectively and are coaxially arranged, so that light emitted by the vacuum ultraviolet light source can reach the optical signal sensor conveniently. The signal intensity of the photo ionization source is linearly related to the light intensity of the vacuum ultraviolet light source, so that the automatic correction of the mass spectrum signal intensity can be realized by tuning the light intensity in real time. The method can solve the attenuation problem of the photo ionization mass spectrometer in long-term use, and has a wide application prospect in the technical field of in-situ online mass spectrometry.