392results about How to "Resolve mutual interference" patented technology

The invention discloses an air-quality monitoring system based on electronic nose technique, and a monitoring method thereof. The system is characterized by being provided with a sensor signal conditioning circuit, wherein a quality detection input end group of the sensor signal conditioning circuit is connected to a gas sensor group; the output end of the sensor signal conditioning circuit is connected to a sensor array signal preprocessor; the output end of the sensor array signal preprocessor is connected to a central processing unit; and a display end of the central processing unit is connected to a display. The system has the advantages that the discreteness problem of a metallic oxide sensor and the mutual interference problem of various gases are better solved by utilizing a virtual resistance method and a specific algorithm provided by the invention, thereby greatly promoting the output precision of the system, being capable of calculating the concentration values of different outputted gases, and determining the type of the gases, and simultaneously finishing the qualitative and quantitative identification of gases, and one output of an artificial neural network represents one gas.

The invention discloses a wireless sensor network multiple target real-time tracking system based on event drive. The system is designed by using a hierarchy logical structure, wherein a perception layer, a network communication layer and an application layer are respectively comprised. In order to avoid network conflict in a multiple target tracking process, a self-adaption clustering node scheduling strategy based on a task is used. A Calman filter positioning tracking algorithm based on event drive is disclosed. A least square method with fast convergence speed is used to modify a current Calman filter state value, and positioning tracking is carried out on a number of mobile robots in a sensor network. The system uses a double token working mode and is combined with a dynamic time slot allocation method based on a task to effectively complete a network task in real time. The system uses the self-adaption clustering node scheduling method, can automatically carry out clustering on measurement data according to a moving target, breaks a previous working mode which is limited by single target tracking, and realizes a real-time multiple target tracking function and remote feedback control based on a wireless network.

The invention relates to a method for determining anisotropic parameters by utilizing the data of a three-dimensional VSP (Vertical Seismic Profile). The method comprises the following steps: when collecting the actual journey of the three-dimensional VSP, computing the time difference of each depth point; computing the anisotropic parameters of a VT I medium and the residual time difference after being corrected; determining the anisotropic parameters of an HT I medium according to the relation fitting between the residual time difference and the azimuth angle; computing the VT I anisotropic parameters of each depth point and the anisotropic parameters of the HT I medium point by point; obtaining the parameter curve of the relation that the anisotropic parameters are changed along with the depth; and eliminating the influence of the dynamic correction time difference which is changed along with the wellhead distance or the shot-geophone distance. In the method provided by the invention, the problem that the VT I anisotropic medium and the HT I anisotropic medium have the mutual interference is solved; the anisotropic influence of earthquake can be effectively eliminated; and the imaging quality of the earthquake and the prediction accuracy rate of oil gas are enhanced.

The invention discloses a vehicle optimal-path navigation method based on vehicle internet. The vehicle optimal-path navigation method can be used to obtain determined and real-time OD (Origin Destination) information for replacing the original OD information obtained through estimation, so that the calculation of an optimal path is simpler and more reliable. According to the method, a dynamic connection matrix is arranged for marking the connection state of a road network; and a traffic monitoring center solves the optical driving path of a vehicle in the road network by using an improved ant colony algorithm according to the OD information and the dynamic connection matrix, so that the vehicle can respond to the accidents in real time and the purposes of increasing the navigation accuracy and improving the operation efficiency of the vehicle are achieved.

The invention relates to a method for recognizing a vehicle type based on a Doppler traffic radar, which is used for effectively reflecting a traffic condition of a road in real time. The method comprises the following steps of: acquiring a radar echo power spectrum time sequence which changes over time with a periodogram method by taking a time domain digital echo signal of the forwardly mountedDoppler traffic radar as signal input; modeling a vehicle into a target body comprising a plurality of scattering centers, wherein the scattering centers are related to distance and frequency spectrum energy of the radar, so that the power spectrum sequence of a same target reflects the profile of the target; then combining effective frequency spectrum characteristic with principal component analysis (PCA) and linear discriminant analysis (LDA) for dimension reduction; and typing by using classifiers such as a support vector machine (SVM) and the like. By adopting the method, the vehicle typecan be accurately recognized in real time, the accuracy rate for dividing a large vehicle type, a medium vehicle type and a small vehicle type reaches 90 percent, the requirements of most of users can be met, and the method has board application prospect.

The invention provides group control device and method for a multi-robot welding system. The device mainly comprises a positioning machine, a PLC electric cabinet, a plurality of welding robots, a welding machine and other parts; the system in on the basis of a communication model of a CC-LINK field bus, the PLC is treated as a working main station, all robots are equipped with CC-LINK communication cards to be used as secondary stations, and the main station and the secondary stations are equipped with detailed control signal sheets for realizing main-secondary information sharing and real-time feedback; in case of a specific complex component, the working area of each robot can be reasonably divided, the quantity of robots for welding can be flexibly selected, a touch screen is operated for human-computer interaction, and therefore, the states and parameter settings of each robot, welding machine, positioning machine and other devices can be monitored conveniently, and as a result, the whole system can be simply, safely, flexibly and efficiently controlled.

The invention discloses a cathodic protection monitoring probe, a cathodic protection monitoring probe monitoring system, and a manufacturing method and a monitoring method thereof. The probe main body is integrally cylindrical; the probe core is integrally cylindrical and is provided with a hollow blind hole; the hollow hole is a probe core cavity; the upper part of the probe core is provided with an electrode threaded hole which passes through the cylindrical wall of the probe core and is communicated with the probe core cavity; the probe core cavity is provided with a reference electrode; and a fixing layer is arranged between the reference electrode and the cylindrical wall of the probe core so as to fix the reference electrode in the probe core. The cathodic protection monitoring probe has the advantages of scientific design, reasonable structure, reliable performance, wide application range, high stability, strong polarization resistance, and stable quality, and is used for pipeline transportation of various fluid materials such as crude oil, natural gas, running water, urban liquefied gas and the like in the fields such as highways, railways, water transportation, aviation, agriculture and industry and the like.

The multiple sensor chip integrated based on SOI technology includes silicon cantilever beam, silicon film, supporting silicon base around the silicon film, peripheral silicon mass block and glass substrate. The silicon film, the supporting silicon base and the glass substrate form the relatively independent vacuum environment as the pressure sensor inside the silicon chip; the silicon cantilever beam structure is connected to the peripheral silicon mass block to form the 3D speed sensor; and on the peripheral silicon mass block, there are integrated humidity sensor and temperature sensor. The present invention integrates several sensors on the same chip to solve the problem of mutual interference and result in small size and light weight, and may find its important application in various fields.

The invention provides a multi-channel data acquisition synchronization system. The multi-channel data acquisition synchronization system comprises a GPS timing module, an ARM base board, an information sampling board and a computer, wherein the GPS timing module sends the serial port data of the GPS absolute time and second pulse signals to the ARM base board; the ARM base board receives the serial port data and the second pulse signals, implements multi-channel splitting, and then sends the data and signals to the information sampling board; the information sampling board resolves, records and acquires the data and sends the data to the computer; and the computer receives, stores and reads the data sent by the information sampling board, draws a waveform curve graph, and analyzes the circuit data according to the waveform curve graph. The circuit data is acquired by adopting the multi-channel data acquisition synchronization system provided by the invention, no signal interference exists between each acquisition channel, each channel has a uniform time reference, and thus the data with higher accuracy can be acquired.

The invention provides a code issuing system based on git, which is characterized in that the system comprises five modules: git warehouse, work order information database, target machine cluster, configuration management background and deployment operation platform. The invention effectively solves the problems of mutual interference of multiple requirements, multi-person cooperative development,remote code sharing, omission distribution and entrainment distribution in the test phase by designing a scheme of multi-branch, multi-environment, parallel development and serial distribution basedon the git version control and the improved version of gitflow workflow mode.

The invention discloses an interference correction and concentration inversion method of multi-component gas analysis, which comprises the following steps: a reference filter channel is used for eliminating the system drifting because of external factors; the water vapor is utilized to correct the interference of the water vapor of an analysis meter in the service environment on the interference functions of the other filter channels; the cross-correlation functions are utilized to obtain the pure absorbance of various target gases in the mixed gas by establishing and solving a multivariable interference equation set, and the cross interference among the target gas is corrected; and after the interference is corrected, the response functions of each filter channel are utilized to inverse the concentration of the target gas. After a simple non-dispersion infrared analysis meter utilizes the interference correction and concentration inversion method provided by the invention, a detectoris used for simultaneously and accurately detecting the concentration of various polluted gases such as CO2, CO, NO, NO2, SO2, CH4, N2O, HC, H2O, NH3, H2S and the like.

The invention relates to a method and apparatus for controlling WIFI and Bluetooth BLE data transmission in the same system. The method comprises the following steps: a priority judgment step: judging the priorities of WIFI and Bluetooth BLE data transmission at the same moment; and a data transmission step: firstly transmitting data with a higher priority and then transmitting data with a lower priority in the two components. According to the method and apparatus provided by the invention, the priorities of data transmission are judged to control the data transmission, thereby solving the mutual interference problem of WIFI and Bluetooth BLE, optimizing the existing transmission system, and improving the system transmission performance.

The invention discloses an anti-collision system of a chaotic signal radar vehicle and a method thereof, and is characterized in that the chaotic signal produced by a chaotic laser in the system is used as a radar carrier signal; after passing a power splitter, one part of the radar carrier signal is used as a transmit; another part of the radar carrier signal is used as a reference signal; in the method, an echo signal and the reference signal in a correlation method are adopted to obtain the delay time of the echo signal so as to calculate and obtain the distance of a target obstacle; by using a distance difference in a certain time interval, the relative speed of the target obstacle is calculated and obtained. The anti-collision system disclosed by the invention utilizes the nonlinear characteristic of the radar to produce the chaotic signal as the carrier wave of the radar so as to obtain a broadband chaotic signal, thereby improving the anti-interference ability of the on-board radar, accurately realizing a corresponding warning and a braking, and avoiding the occurrence of an accident; besides, the anti-collision system has the advantages of simple structure, stable property and low price, thereby being applicable to various vehicles.

The present invention relates to a system for quickly detecting tunnel deformation, comprising a rail walking mechanism (1) disposed on a subway rail, and an acquisition system (2) disposed on the rail walking mechanism (1); wherein the rail walking mechanism (1) is a T-shaped walking platform, comprising a cross shaft (11), a longitudinal shaft (12) and a stand column (13); the cross shaft (11) and the longitudinal shaft (12) are connected to form the T-shaped platform; tread wheels (16) are disposed at the bottom of the T-shaped platform; one end of the stand column (13) is vertically connected with the cross shaft (11), and the other end of the stand column is used for configuring an operating platform (14) of the acquisition system (2); the acquisition system (2) comprises a fractional laser structured light source (21), industrial focus-fixed cameras (22) and a computer; and the computer is connected with the industrial focus-fixed cameras (22). Compared with the prior art, the quick detection device can effectively solve the problem of detecting cross section deformation of tunnels, the problem of transforming many different local coordinate systems to a global coordinate system, and the problem of unstable test data caused by movements.

The invention discloses a two-dimensional multi-aperture scan synthetic aperture radar (SAR) imaging method. The method includes the following steps of S101, subjecting echo data received by sub-apertures to range direction pulse compression respectively by using a range direction matched filter; S102, uniting the echo data which are subjected to pulse compression in a range direction and an azimuth direction to form a matrix Z and subjecting rows of the matrix Z to weighting summation by using a two-dimensional weighting vector wk respectively; and S103, subjecting the echo data to focusing imaging by using an extended chirp scaling (ECS) algorithm. By means of range direction and azimuth direction united two-dimensional digital beam forming (DBF) processing, echo separation of various sub-swaths and frequency spectrum reconfiguration of azimuth periodicity non-uniform sampling signals are achieved, and problems of mutual interference and azimuth multi-channel non-uniform sampling of echo signals of various sub-swaths under a two-dimensional multi-aperture scan SAR mode are solved.

Disclosed herein is a system and methods for determining the alleles, neoantigens, and vaccine composition as determined on the basis of an individual's tumor mutations. Also disclosed are systems andmethods for obtaining high quality sequencing data from a tumor. Further, described herein are systems and methods for identifying somatic changes in polymorphic genome data. Finally, described herein are unique cancer vaccines.

The invention discloses an MIMO-EDM wireless communication system and method. The MIMO-EDM wireless communication system comprises a hybrid system and a separation system. Multiple-input multiple-output technology and MIMO technology are combined, and multiple paths of signals can be separated from entropy domains by using an entropy division multiplexing algorithm. The MIMO-EDM wireless communication method comprises the following processes: transmitting n paths of source signals; receiving the aliasing signals through a receiving end; and separating the multiple paths of aliasing signals through the separation system. According to the MIMO-EDM wireless communication system and method, the utilization rate of spectrum resources and the capacity of wireless channels are improved; negentropy is used as the criterion of statistical independence, and the separation of the multiple paths of aliasing signals is realized in the information entropy domains for the first time; and high-speed and high- quality broadband wireless communication is realized.

The invention relates to a tamed spread spectrum multiplexing method for high-speed data transmission. The method is characterized by comprising a transmitting step and a receiving step, wherein the transmitting step comprises the following steps of: converting 2n-bit serial data to be transmitted into two paths of parallel data, performing multi-nary data spectrum spread, acquiring a baseband signal, performing D/A (Digital/Analog) conversion to acquire an analog baseband signal, and transmitting through quadrature modulation; and the receiving step comprises the following steps of: converting a high-frequency signal received by an antenna into an intermediate-frequency signal, then converting the intermediate-frequency signal into a digital intermediate-frequency signal, and converting the digital intermediate-frequency signal into serial data through digital demodulation, synchronous signal de-spread and parallel-series conversion. The tamed spread spectrum multiplexing method for the high-speed data transmission is an effective technical means for solving the contradiction between the communication rate and the signal bandwidth of spread spectrum communication, so that the shading property, the reliability and the anti-interference performance of high-speed data communication equipment are improved.

The invention discloses a coordinated control method and a coordinated control device for electronic differential speed and active differential steering. The coordinated control method comprises the following steps of: calculating an ideal yaw angular velocity omega d according to a steering wheel rotation angle delta f input by a driver; Calculating a moment Mb according to the yaw angular velocity omega d; Judging whether the direction of the output rated torque KsMz of the active differential steering controller is the same as the direction of the torque Mb when the active differential steering controller is in the auxiliary driving mode, and detecting the actual yaw angular speed omega r of the vehicle if the direction of the output rated torque KsMz is the same as the direction of thetorque Mb; Otherwise, it is judged whether[Omega] r ( [Omega] D); If yes, the electronic differential controller and the active differential steering controller control simultaneously, otherwise, theelectronic differential controller stops the control. The invention can reasonably and effectively coordinate the working relationship between the two controllers, and solves the problem that the driver and the control system interfere with each other when the lane departure auxiliary control system of the traditional automobile is designed based on the steering.

The invention discloses a displacement-adjustable precision locating platform. The displacement-adjustable precision locating platform comprises a base, a manual adjustable frame sliding table platform, a platform cushion block, a compliant hinge precision locating platform body, four electromagnetic armatures, two Z-axis right-angle junction plates and electromagnetic drivers. The manual adjustable frame sliding table platform can achieve three-freedom-degree precision locating adjustment through a cross rotating guide rail. The platform cushion block is arranged on a sliding table through four evenly-distributed threaded holes. The middle of the compliant hinge precision locating platform body is fixed to the platform cushion block through two threaded holes, and therefore the platform can achieve displacement in the X-axis direction and Y-axis direction along with the manual adjustable frame sliding table platform. The four electromagnetic armatures are fixed in the four directions of the compliant hinge precision locating platform body in a threaded connection manner. The two Z-axis right-angle junction plates are in threaded connection with the base of the platform. The electromagnetic drivers serve as drive equipment of the platform and are in threaded connection with the Z-axis right-angle junction plates to be connected with the base of the platform. The displacement-adjustable precision locating platform is simple in structure, small in overall size, low in cost and convenient to operate, and the high-precision locating requirement can be met.