869results about How to "High Acquisition Accuracy" patented technology

The invention relates to a welding seam appearance, fuse pool and the seam close to visual integration sensing test device, comprising a shell and the blocking electric arc plate, integrating the close infrared CCD sensor, big focus distance camera, close infrared narrow filtering system and the close infrared laser set inside the screen, the said close infrared narrow filter system shaft line forming into an included angle of 15-20degree, the close infrared laser emitting center being equal in height with the big focus distance lens, with isolation plate between the close infrared laser and the big focus lens and narrow filtering system, with the said close infrared laser and the close infrared CCD sensor connected to the controller. It can send messages like sense sampling fusion appearance, fuse pool and access slope visual information, realizing the inspection of sensing device.

The invention relates to an intelligent power lithium ion battery management system. The system comprises a microcontroller module, an acquisition module, a storage module, a safety protection module, a communication module, a charging and discharging control module and an equalization management module, wherein the acquisition module, the storage module, the safety protection module, the communication module, the charging and discharging control module and the equalization management module are connected to the microcontroller module. The charging method comprises the following steps that according to a single battery voltage collected by the acquisition module, a total voltage of a battery pack, a temperature, a current and other information, whether the battery allows to be charged is determined; if the battery allows to be charged, the battery management system automatically adjusts a charging mode to the battery pack; through CAN communication, an output current of an equalization power supply module is automatically adjusted; equalization charging is performed on a single battery with a low voltage till that differential voltages of all the single batteries are less than a threshold. By using the system and the method of the invention, according to data information of the battery pack, a charging mode can be automatically selected, a charging current is automatically matched, a charging protection function is possessed, charging efficiency of the battery pack can be increased and a circulation service life of the battery pack is prolonged.

The invention discloses a method of using intelligent glasses for vehicle maintenance, which belongs to the field of vehicle maintenance and aims at solving the technical problem that as intelligent glasses can not be used for vehicle maintenance, intelligence is not high. According to the technical points, the method comprises a step of head pose recognition on the intelligent glasses for vehicle maintenance, a step of sharing of other equipment data for vehicle maintenance by the intelligent glasses, a step of vehicle remote maintenance support by the intelligent glasses, a step of using of an intelligent glass touch board during the vehicle maintenance process, and a step of hand gesture recognition by the intelligent glasses during the vehicle maintenance process. The method of the invention has the advantages that applications of the intelligent glasses in the vehicle maintenance field can be realized.

The invention relates to an automobile insulation resistance detection circuit and method, and the circuit comprises a negative bleeder resistor, a positive bleeder resistor, a first sampling resistor, a second sampling resistor, a third sampling resistor, a fourth sampling resistor, a fifth sampling resistor, a sixth sampling resistor, a negative switch, and a positive switch. One end of the negative bleeder resistor is connected with the negative electrode of a detected battery, and the other end of the negative bleeder resistor is grounded. One end of the positive bleeder resistor is connected with the positive electrode of the detected battery, and the other end is grounded. One end of the first sampling resistor is connected with the negative electrode, and the other end of the sampling resistor is connected with one end of the negative switch. The other end of the negative switch is connected with one end of the second sampling resistor, and the other end of the second sampling resistor is grounded. One end of the third sampling resistor is connected with the positive electrode, and the other end of the third sampling resistor is connected with one end of the positive switch. The other end of the positive switch is connected with one end of the fourth sampling resistor, and the other end of the fourth sampling resistor is grounded. One end of the fifth sampling resistor is connected with the positive electrode, and the other end of the fifth sampling resistor is connected with one end of the sixth sampling resistor. The other end of the sixth sampling resistor is connected with the negative electrode. According to the scheme of the invention, the circuit can improve the detection precision of insulation resistance.

The invention relates to an FPGA (field programmable gate array)-based power harmonic analyzer, belonging to the technical field of power electronics. The power harmonic analyzer comprises a sensor circuit and an AD sampling circuit as well as a data acquisition module, a data caching module, a data type conversion module, a windowing module, an FFT (fast Fourier transformation) computation module, an operational result storing and interruption generating module, a Nios II soft core processor module and an LTM (long-term memory) display module which are arranged in an FPGA. In the invention, harmonic acquisition and processing at the front end are realized by adopting hardware, thus the acceleration advantage of hardware is fully played; and the processed data is further calculated and controlled by utilizing the Nios II soft core processor in the FPGA, the process is completed on an on chip bus of the FPGA, data transmission is realized, and speediness of hardware design and control flexibility of the Nios II soft core processor are given full play.

The invention relates to the relevant technical field of pressure characteristic value acquisition of pressure sensors, in particular to a method and a system for acquiring a pressure characteristic value of a pressure sensor with a nonlinear temperature compensation algorithm. The method includes the steps: sampling the pressure characteristic value of the pressure sensor to obtain a pressure characteristic value D; calculating a temperature drift correction coefficient delta t related with the outside temperature according to the outside temperature; and calculating a corrected value D+delta Dt of the pressure characteristic value. The sensor is calibrated by an upper computer, the upper computer makes a data sheet according to a series of data measured at different temperatures and under different pressures in calibration as the upper computer can execute large-scale computation, a calculating parameter for calculating the pressure value can be rapidly found in an EEProm (electrically erasable programmable read only memory) sheet according to signals measured by a temperature sensor and the pressure sensor when a lower computer is used for measurement, and an accurate pressure value is obtained by calculating. As the temperature drift correction coefficient is added, acquisition accuracy of the pressure characteristic value is remarkably and particularly improved by the aid of a one-step compensation method in a high-temperature area and a low-temperature area.

The invention discloses a pavement cracking detection system and a pavement cracking detection method based on line structured light. A near infrared laser vertically irradiates to a to-be-measured pavement, a camera takes a shoot on the light vertically irradiated to the to-be-measured pavement by the near infrared laser, light stripe images are collected and transmitted to a computer, and the computer calls an image transmission storage processing module to perform storage and pavement cracking detection, so that the problem that light stripes drift up and down along the scanning direction due to ups and downs of the pavement can be avoided, and the collection precision and the detection processing speed are high. In addition, the detection method comprises the steps that the crosswise contour line of the pavement is extracted from the light stripe image sequence, then the pavement depth image through which global three-dimensional contour information of the pavement is reflected is generated by using straight-line fitting and differentiating computation stitching, and the curve shape characteristics of cracks serve as the detection basis to be distinguished from other shape signals, thus cracking extraction is realized accurately, so that errors caused by ups and downs of the pavement or vibration of a vehicle can be effectively removed in real time, and the phenomena of false detection and missing of detection are decreased.

A bio-recognition access control device having convenient operation and use comprises a smart card reader-writer; a biological characteristic collecting device; a biological characteristic data comparer for comparing the biological characteristic data read from the smart card reader-writer with the on-site biological characteristic data collected by the biological characteristic collecting device and outputting a comparison result signal; and a strobe controller for opening/closing a strobe according to the comparison result signal, wherein the biological characteristic collecting device is composed of a height adjusting device for adjusting the height of a mobile platform for supporting the biological characteristic collecting equipment, and a height measuring device for measuring the height of an visitor; the height measuring device measures the body height of a visitor and outputs a body height signal according to the height measured; and the height adjusting device controls the mobile platform according to the signal to move up and down so as to make the biological characteristic collecting device on the mobile platform at the optimal position for the visitor, thereby facilitating the use.

The invention discloses systems and a method for testing a remote controller. One system testing a remote controller is characterized by comprising a computer, a remote control code collecting device, a remote controller and a sample remote controller. The other system for testing a remoter controller is characterized by comprising a computer, a remote control code collecting device, a remote controller and a code-sending device, a microcontroller of the remote control code collecting device receives control instructions form the computer to control a simulation keyboard to implement the keying operation of the remote controller and uploads the collected waveform data of the remote controller to the computer. The remoter controller test method is characterized in that the computer controls and realizes the automatic keying and waveform data collection of the remote controller and can automatically compare collecting results with the design requirements.

The invention provides a transformer substation online intelligent patrol centralized monitoring system and method. The system carries out the linkage interaction with a main and auxiliary monitoringsystem, obtains a main and auxiliary equipment linkage signal, obtains an associated equipment point location list according to the linkage signal, and constructs an inspection task according to the equipment point location and a pre-configured linkage strategy or creates the inspection task according to requirements; the inspection task is issued to corresponding station ends, centralized controlis performed on the station ends, the corresponding inspection task is split into a plurality of sub-tasks by each station end, and the corresponding sub-tasks are concurrently executed by differentinspection execution systems; multi-dimensional inspection data acquired by each inspection execution system of each station end concurrently executing the corresponding sub-task is received; and an intelligent analysis algorithm adopted by each station end is determined by utilizing a cloud edge cooperation method, the equipment state is identified by utilizing the intelligent analysis algorithmbased on the multi-dimensional inspection data, and alarming or/and equipment operation and maintenance are performed according to an identification result. The problems that robot inspection has an inspection blind area, a single video coverage area is small, and fault emergency disposal is not timely are solved, the comprehensiveness, accuracy and intelligence of transformer substation equipmentinspection are improved, and the linkage capacity of a system in a transformer substation is increased.

The invention provides an object three-dimensional information acquisition method and device, and the method comprises the steps of extracting two-dimensional key points of an object according to an image, and determining three-dimensional key points matched with the two-dimensional key points in each candidate three-dimensional model; determining a plurality of first reference posture positions of each candidate three-dimensional model according to the three-dimensional key points and the two-dimensional key points; obtaining a plurality of re-projection error values of each candidate three-dimensional model and the object under the plurality of first reference attitude positions, and determining a first target attitude position with the minimum re-projection error value and a first target three-dimensional model; and obtaining three-dimensional information of the object according to the first target attitude position and the first target three-dimensional model. Therefore, the obtaining efficiency and the accuracy of the three-dimensional information of the object in the two-dimensional image are improved, and the robustness of the obtaining mode of obtaining the three-dimensional information of the object is ensured.

The invention discloses a remote monitoring system on parameters of aquafarm water quality and a control method. The system is composed of a wireless sensor network node and a data monitoring center, wherein the wireless sensor network node comprises a water quality sensing node, a sink node and a gateway node, and the wireless sensor network node is formed by the nodes by adoption of a self-organized mode. The sink node is connected with a computer of the data monitoring center through a serial port communication way, and the gateway node is connected with the computer of the data monitoring center through a wireless transmission way. According to the remote monitoring system, technologies of the computer, a data bank and the likes are utilized, and a remote data management platform which integrates data analysis, data management and data comprehensive display is used for monitoring the parameters of the aquafarm water quality. Meanwhile, the platform further has strong functions of historical data storing and searching, and functions of data pre-warning in real time and limit setting on pre-warning of the water quality, and comprehensive and reliable data service is supplied for users.

The invention discloses a fan signal acquiring device. The fan signal acquiring device comprises a sensor signal conditioning module, a signal acquiring and processing module and a data communication transmitting module, wherein an analog signal and audio and video signals sent by the sensor signal conditioning module are sent to the signal acquiring and processing module, converted into digital information, preprocessed and then transmitted to a control center through the data communication transmitting module for further analysis processing and failure processing. The signal acquiring device synchronously acquires a vibration signal, a rotating speed signal and a temperature signal of a transmission chain part of a fan through multiple channels of a 16-bit ADC (analog to digital converter) and transmits the signals through the Ethernet and GPRS (general packet radio service), the data transmission timeliness is improved while the acquisition accuracy is improved, audio acquiring and video monitoring functions are added, and a firm foundation is laid for data analysis, noise analysis, state monitoring and fault diagnosis by an upper computer.

The invention relates to a sensor test system and method. The test system comprises a ground power supply module, a sensor module, a data collecting module, a parameter setting module, a sampling rate determining module, a demand determining module, a test module and an output and storage module. The sensor test method includes the steps that the parameter setting module conducts initial setting, test demands are determined, and a voltage signal output by the whole sensor module is collected; the collected voltage signal is input into the test module for testing, and test results are finally analyzed. By means of the sensor test system and method, the no-less-than-250-circuit sensor output voltage is measured, the single-sensor working performance is detected, the requirements that the system test circuit number can be increased and is easily increased can be met, and the test efficiency is high.

The invention provides a combined type measurement and three-dimensional reconstruction method combing a Kinect device and an articulated arm measuring instrument. Firstly, quickly obtaining point cloud data of an object through the Kinect, performing secondary measuring on feature information which cannot be obtained by the Kinect and on features with high accuracy requirements through the articulated arm, completing fusion of different data source information by means of point cloud registration technology, and reconstructing a three-dimensional model of the object. According to the combined type measurement and three-dimensional reconstruction method combing the Kinect device and the articulated arm measuring instrument, non-contact measurement and contact type measurement are combined together, not only the problem of low accuracy of the non-contact measurement can be solved, but also point cloud data with lost boundaries and concave holes and the like can be effectively repaired, meanwhile, measuring efficiency can be improved, and novel technology and means are provided for data acquisition.

The invention provides a piecewise linearity decoupling method based on a kalman filter and repeated collection, and aims at solving the problem of coupling between dimensions of a multivariate force sensor. The linearity decoupling method includes the steps of building a coupling error model, respectively deducing a force value-voltage input-output formula to each force value of the multivariate force sensor in the positive and negative directions, then carrying out a static calibration experiment on the multivariate force sensor, carrying out filtering on voltage output by the multivariate force sensor according to a kalman filter method, carrying out repeated measurement on each loaded force value to obtain an input-output relational graph between the loaded force values and the voltage output by the multivariate force sensor, then obtaining undetermined coefficient of a force value-voltage fitting formula according to the method of solving least squares solution of overdetermined linear equations, and obtaining a coupling matrix by carrying out coefficient matrix inversion to finish the coupling process. Compared with a traditional coupling method, the piecewise linearity decoupling method can remarkably improve the coupling accuracy of the multivariate force sensor on the premise of not increasing calculated amount.

The invention discloses a remote controller test system and method thereof; the remote controller test system comprises a computer, a remote control code collection device and a remote controller, and is characterized in that the remote control code collection device comprises a simulation keyboard and a microcontroller, wherein the microcontroller of the remote control code collection device receives the control instruction from the computer, controls the simulation keyboard for implementing keying action on the remote controller, and uploads the collected waveform data of the remote controller to the computer. The test method for the remote controller realizes automatic keying of the remote controller and the collection of waveform data by a computer program, can also compare the collection result with the design requirement, and thus improves the test efficiency of the remote controller.

The invention relates to an aeromagnetic vector data processing method. The aeromagnetic vector data processing procedures include: connecting an inertial navigation sensor with a magnetometer device, using an upper computer to receive data synchronously acquired by a magnetometer and an inertial navigator, synchronously processing the magnetometer data and the inertial navigator data and storing, correcting nonorthogonal degree of magnetometer data, correcting turning difference of the magnetometer data, transforming magnetic vector postures, and drawing a magnetic vector curve graph. Influences on data acquisition precision are specifically eliminated by singly correcting factors affecting acquisition precision of a magnetometer probe, precision of the magnetometer after secondary correction is greatly improved, matching of information acquired by the magnetometer and the inertial navigator is guaranteed by synchronously processing data of a magnetometer data packet and an inertial navigator data packet, and magnetic vectors are subjected to posture transform according to inertial navigator posture information, so that magnetic field data can be converted into magnetic vectors based on a fixed geographic coordinate system, and reliable vector data are provided for aeromagnetic measurement.

The invention relates to a lane line map construction method and a construction system. The method comprises the following steps: acquiring location information of the vehicle by using a GPS sensor disposed on the vehicle; identifying a lane line with a camera sensor disposed on the vehicle and outputting lane line curve information; calculating a trajectory of the lane line according to the acquired location information of the vehicle and the acquired lane line curve information; and splicing the acquired trajectories of the lane line to form the lane line map. According to the lane line mapconstruction method based on camera sensor and construction system, the high-accuracy lane line map can be acquired at a lower cost.

The invention discloses a device for measuring soil water movement and a soil structure. A water supply part comprises a water supply tank, a plug, a valve and a Mahalanobis bottle. The water tank is communicated with the Mahalanobis bottle through a pipeline. The top of the Mahalanobis bottle is provided with a first through hole. The plug is arranged at the position of the first through hole. The valve is arranged at the lower part of the Mahalanobis bottle. A testing soil column comprises an upper cover and a body. The top part of the upper cover is provided with a second through hole. Thesecond through hole is connected with the valve through a pipeline. A glass screen is arranged inside the body. The lower part of the glass screen is provided with filter paper. The lower part of thebody is provided with a water outlet. The side wall of the body is provided with a third through hole. A soil moisture sensor is arranged at the position of the third through hole. The soil moisture sensor is connected to an acquisition device through a lead wire. A data acquisition part comprises the acquisition device, an X-ray machine and a computer. Output ends of the acquisition device and the X-ray machine are connected to an input port of the computer. The invention also discloses a method for measuring the soil water movement and the soil structure.

The invention provides a portable water quality monitor, which comprises an upper computer and a lower computer, wherein the upper computer and the lower computer are connected through a communication middleware or a wireless communication part, and the upper computer comprises an upper computer human-computer interface part; the lower computer comprises a singlechip, a data acquisition part, an expanded SDRAM (synchronous dynamic random access memory) part and a lower computer human-computer interface part, the data acquisition part is provided with an SDI (standard data interface)-12 sensor connected with the singlechip through a flexible SDI-12 interface bus, and the SDI-12 interface bus is connected with at least one SDI-12 sensor through a successive type interface; the wireless communication part comprises a GPRS (General Packet Radio Service) wireless module; and a power source part comprises a selfcontained power source, a solar energy power source and a power source management module used for switching the power source into the selfcontained power source when voltage provided by the solar energy power source is not sufficient to maintain the work of the water quality monitor. In the invention, the number of sensors accessed into the portable water quality monitor is not limited, the data transmission is simple, and the data storage capacity is large.

The invention belongs to the technical field of 3D measurement, and provides a 3D information measurement device. The device comprises an image acquisition device, which is used for acquiring a groupof images of a target object through the relative movement of the acquisition area of the image acquisition device and the target object. A collection area moving device for driving the collection area of the image collecting device to generate relative motion with the target object; The acquisition area moving device adopts one of the following two schemes: 1) the acquisition area moving device is a rotating shaft device, so that the image collecting device rotates along a central axis; 2) that acquisition area move device is an optical scanning device, and under the condition that the imageacquisition device does not move or rotate, the acquisition area of the image acquisition device and the target object generate relative motion. The invention adopts a monocular camera and a mobile device of a collection area which is more simplified in structure and occupies less space. The fast conversion of the relative position between the acquisition area and the object is realized, the imageacquisition efficiency is accelerated, and the interference generated by the moving camera is reduced.

The invention discloses an in-situ multipoint collecting device and a method of a suction-adjustable soil solution. The device comprises a leaky pipe, the bottom of which is connected with a ceramic head or a film-type liquid-taking head, a liquid collecting bottle with scales, a multipath venting device, a pressure controlling bottle with scales and a vacuum air pump, wherein the leaky pipe is connected with the liquid collecting bottle with scales; the liquid collecting bottle with scales is connected with the pressure controlling bottle with scales through the multipath venting device; and the pressure controlling bottle with scales is connected with the vacuum air pump. The technical scheme is that the invention can continuously collect a plurality of samples simultaneously, accurately control the vacuum suction used in collecting, and improve the collecting efficiency and the collecting precision, is applicable to in-situ collecting of the soil solution, and has simpleness, reliability and low cost.

The invention relates to a method and a system for identifying heart-lung sound signals. The method includes the steps of acquiring heart/lung sounds initial detection signals, acquiring correspondingenvironment sound signals, and subjecting the heart/lung sounds initial detection signals to differential noise reduction processing, so as to prevent the influence of the peripheral environment on the cardio-pulmonary sound signals, prevent influence of signals irrelevant to the cardio-pulmonary sound signals on the identification precision, and effectively improve the collection and identification precision of the cardio-pulmonary sound signals. The heart sound simulation signals is processed through combination of EMD (Empirial Mode Decomposition) and a high-order shannon entropy algorithm, and a wavelet decomposition is used for processing the lung sound digital signals. Accurate recognition of the characteristics of the heart sound signals and the lung sound signals is achieved, andthe identification steps of the cardio-pulmonary sound signals are effectively simplified. The real-time performance is higher, and the cost is low.

The invention provides a multi-parameter distributed optical fiber sensing system. When the system transmits a detection signal to an optical fiber, an acousto-optic modulator is used to modulate an optical signal generated by a light source into a periodic pulse light. The magnitude of pulses in the periodic pulse light is different. External vibration information is collected when the pulse amplitude is large. When the pulse amplitude is small, the external temperature and strain information are collected. When the external vibration information is collected, the light intensity change of a Rayleigh scattered light generated by the optical fiber is obvious. Non-linear noise introduced by a stokes light generated by the optical fiber can be avoided when the external temperature and strain information are collected. The accuracy of information collection can be improved. A single information acquisition channel can be used to realize distributed multi-parameter acquisition of vibration, temperature and strain. The structure is relatively simple. The production cost of the system can be reduced.

The invention provides a manmade climate comprehensive experiment system which comprises an automatic control system, an air conditioning system, a heating system and a refrigerating system, wherein a first signal output/input end of a central controller in the automatic control system is correspondingly connected with a first signal input/output end of an air-cooled hot pump unit in the air conditioning system, a second signal output/input end of the central controller in the automatic control system is correspondingly connected with a first signal input/output end of a combined air conditioning unit in the air conditioning system, a third signal output/input end of the central controller in the automatic control system is correspondingly connected with a first signal input/output end ofa simulation environment zone temperature sensor in the heating system, and a fourth signal output/input end of the central controller in the automatic control system is correspondingly connected with a second signal input/output end of a simulation environment zone temperature sensor in the refrigerating system. The manmade climate comprehensive experiment system has the advantages that the structure is reasonable, the functions are powerful, the work condition conversion operation is convenient, the experiment data acquisition precision is high, a data acquisition and analysis system is convenient to use, and the test accuracy can be ensured.