36results about How to "Guaranteed data accuracy" patented technology

The invention discloses a vehicle-mounted high-speed road inspection system, and a data acquisition and processing method based on the vehicle-mounted high-speed road inspection system. The inspection system aims to the technical disadvantage in an existing high-speed road inspection method, a movable inspection vehicle is adopted as a carrying platform for carrying multiple data collecting equipment, and the time synchronization, state response, data transmission and storage of each piece of data collecting equipment as well as data collecting equipment integration and monitoring technologies are organically adjusted through a high-precision synchronous controller; the operation reliability of the vehicle-mounted high-speed road inspection system is guaranteed, a data fusion technology and the true color valuation are used for achieving a real three-dimensional expression of a space surface feature, the result output and management are finished in a customizing manner, different requirements of clients are met, the quality of inspection on a road is greatly improved and the speed of the inspection on the road is greatly increased, and the in-time effective data reference is provided for road construction maintenance and management of a high-speed road department.

A device for testing bonding performance of a synthetic fiber and cement based material during the plastic stage contains a force transducer, a holder, a drive system and a computer. The upper end of synthetic fiber is fixed by the holder and the lower end is embedded in a cement matrix. The holder is installed on the force transducer. The cement matrix is linked with the transmission system. The end of the synthetic fiber clamped by the holder is fixed. Under the control of the computer, the transmission system drives the cement matrix to move such that the synthetic fiber is pulled out from the cement matrix. The force transducer inputs force parameters measured during the pulling process into the computer for test and analysis. The invention solves problems of large measuring range and insufficient precision of present test equipment. According to the invention, the whole process is completed by the operation of the computer, and corresponding measurement and control parameters are arranged for the synthetic fiber, so as to guarantee validity and accuracy of the test result.

The invention belongs to the technical field of integrated circuits, in particular to a method and device for compressing and decompressing simulated waveforms of integrated circuits. For the compression method, firstly, the input analog waveform data stream is divided into time slices according to the characteristics of the simulation time, and for each time slice, I frame and P frame are divided, and the zero value storage operation is performed on the I frame; for the P frame , calculate the residual with the I frame, then perform quantization, adaptive arithmetic coding, and store. The decompression process is the reverse of the compression process. The device includes an input unit, an output unit, a program storage unit, an external bus, a memory, a storage management unit, an input-output bridge unit, a system bus and a processor; compression and decompression programs are stored in the program storage unit. The invention compresses the analog waveform, can effectively reduce the occupied storage space, and achieves a high compression ratio with very low computational complexity.

In palette-based coding, a video coder may form a so-called "palette" as a table of colors representing the video data of a given block. The video coder may code index values for one or more pixels values of a current block of video data, where the index values indicate entries in the palette that represent the pixel values of the current block. A method includes determining a palette for a block of video data, identifying escape pixel(s) not associated with any palette entries, identifying a single quantization parameter (QP) value for all escape pixels of the block for a given color channel using a QP value for non-palette based coding of transform coefficients, dequantizing each escape pixel using the identified QP value, and determining pixel values of the block using the dequantized escape pixels and index values for any pixel(s) associated with any palette entries.

The invention discloses an establishing method for a reference sample plot used for remote sensing monitoring of alpine grassland. According to the invention, ground survey is carried out on the basis of determination of one hectare of a reference sample plot, wherein the area of the reference sample plot can cover more information including a plurality of information like vegetation, soil, terrain and interference; positioning accuracy guaranteed by differential GPS can provide more accurate interpretation information for high spectral remote sensing; unreliable information in data of 9 control quadrats can be removed according to a data confidence interval, and strong noisy data removing capability is obtained; the reference sample plot has good repeatability and verifiability, so the defect that conventional meadow survey cannot be reproduced is overcome; and the method has strong information integration capability, information like species, soil, hydrology, microorganisms, isotope and heredity except vegetation can be simultaneously acquired and brought into an information platform according to research and monitoring needs, so the method provides technology and standards for further enlargement of construction of a reference sample plot network of the alpine grassland in China.

The invention discloses a ship navigation environment information collection and redundancy control system based on shipborne GNSS-R. According to the system of the invention, data information collected by a plurality of devices such as a radar, a wave height measuring instrument and an anemometer is acquired; the acquired information is the reflected signals of a satellite, the signal sources ofnavigation satellites are free, and therefore, all navigation satellites can be used as the signal sources of the system of the present invention; L-band waves used by the navigation satellites are not sensitive to rain and snow weather, and therefore, the system can realize sea surface condition all-weather and uninterrupted monitoring and provide accurate environmental data for ship navigation;since a signal receiving antenna is simple in structure and does not require mechanical moving parts such as a radar and an anemorumbometer, the service life of the signal receiving antenna is greatlyprolonged, and the data accuracy of the system after long-term use is ensured, and the system does not require frequent maintenance.

The invention discloses an automatic three-dimensional high-definition camera shooting cultural relic data protection device and method. According to the invention, high-efficiency, high-precision andstable collection of cultural relic data can be realized. The method plays an important role in cultural relic data inheritance and protection. Multi-angle shadow-free data acquisition can be automatically carried out on cultural relics, multi-camera simultaneous shooting is carried out, and the acquisition efficiency is several times to dozens of times that of a traditional method. Meanwhile, due to the fact that the relative positions of a camera position and a replenishment light source are fixed, the characteristics of accurate positioning and uniform and stable lighting are achieved, nohuman intervention exists in the whole process, and data precision and high stability are guaranteed.

The present invention relates to the technical field of environment detection and more particularly relates to an environment tester. The environment tester comprises a base, a main bracket, an assistant bracket 1, an assistant bracket 2 and an assistant bracket 3. The assistant bracket 1 is provided with a wind direction instrument. The assistant bracket 2 is provided with an anemometer. The assistant bracket 3 is provided with a sunshine tester. The top end of the main bracket is threadingly connected to a lightning rod. The base is provided with a bearing along the axial direction of the base. The bottom end of the main bracket is closely embedded in the bearing hole of the bearing. The assistant bracket 1, the assistant bracket 2 and the assistant bracket 3 are threadingly connected to the main bracket. By using the environment tester, each of the assistant brackets is connected to the main bracket through a thread, a user can conveniently assemble and disassemble an environment tester device, the transportation is convenient, and the transportation cost is reduced. Through the connection of the bearing and the main bracket, the angle of a lighting instrument can be rotated for 360 degrees and adjusted, the user can conveniently use the lighting instrument, and thus the data precision of collection is ensured. The environment tester has the advantages of simple structure, reasonable setting and low manufacture cost.

The invention relates to an orientation system for the horizontal drill of a deep-hole drill carriage. The orientation system comprises an inertial unit, a rotary encoder, a 485 bus communication card, an ARM controller and a display, wherein spatial position information is obtained by the inertial unit and the rotary encoder, and is then transmitted to the ARM controller; the ARM controller performs synchronous processing according to the received information, and then calculates the spatial position and the spatial drift angle of the horizontal drill respectively; two-ply Kalman filtering data fusion algorithm are performed respectively to obtain true and reliable position data of the horizontal drill, which is then stored in the expansion memory; the horizontal drill position information transmission is performed passively or actively according to instruction of a deep hole drill carriage console; and the information is shown on the display in a real-time manner. The orientation system for the horizontal drill of the deep-hole drill carriage is accurate in real-time localization and reliable in data, and has good feasibility and is low in manufacture cost.

The invention relates to a breaker characteristic detection comprehensive physical parameter display instrument and a control method. The display instrument comprise an analogue signal input terminal, digital control signal input terminals, an analogue signal processing circuit, a single chip, a liquid crystal screen communication terminal, a liquid crystal display LCD screen and a switch power module; the analogue signal input terminal inputs a signal in the analogue signal processing circuit, then inputs the processed signal in a single chip AD (analog/digital) sampling channel; each digital control signal input terminal inputs the signal to an I/O input port of the single chip; the single chip inputs the to-be-displayed signal in the LCD screen by the liquid crystal screen communication terminal through an output port; and the switch power module is the power source of the single chip and the signal processing circuit. One or more parameters can be acquired simultaneously according to demands, and one or more parameters can be displayed according to the demands; since the sampling single chip is used for data acquisition and display control, the accuracy of the acquired data can be guaranteed; therefore, the intelligent display can be realized, the space is saved, the complexity of the data acquisition operation and computation can be reduced.

The invention provides a telemeasuring data storage method based on a data pair. The telemeasuring data storage method comprises steps of (1) cutting continuous telemeasuring data in an equal time interval slicing method to form N groups of independent data point groups, (2) dividing N slices into two sequences of V part and T part and then compressing the N slices, compressing and storing the V part of each slice of the N slices according to a principle, and compressing and storing the T part of each slice of the N slices. A group of independent data point group forms a slice. A data level slicing storage technology and frame structure compression algorithm are employed in the telemeasuring data storage method; frame structure feature compression is achieved on the basis of data partitioning and aggregation; the telemeasuring data storage method is advantaged by fast retrieval speed, prevention of data compression loss and low internal memory cost; and performance output can be improved and storage demands can be lowered.

The invention relates to a VRS grid point zero trust checking system and method. The method comprises the steps of receiving VRS grid point data generated by a CORS computing system; decoding the VRS grid point data, and intercepting illegal messages; detecting the decoded VRS grid point data and rejecting the data which cannot provide the CORS service; eliminating the data of which the consistency of the observation data of the VRS grid points and the geometric model of virtual coordinates does not meet the requirement; and coding the VRS grid point data and pushing the coded VRS grid point data to a corresponding positioning terminal. According to the invention, the safe and rapid verification of the VRS data is realized, and the safety and reliability of the data are improved; satellite data with the precision error not meeting the requirement are eliminated, and the data precision and reliability are guaranteed. The gross error checking is fast and effective, and a large amount of computing resources are prevented from being occupied.

The invention relates to a working channel calibration method and device of an intelligent antenna, intelligent antenna equipment, a storage medium, an application-specific integrated circuit and a programmable logic circuit, and the method comprises the steps: obtaining a sampling point sequence of a working channel passing through the intelligent antenna for multiple times, and determining a plurality of first measurement parameter sets of the working channel according to the sampling point sequence; combining the plurality of first measurement parameter sets of the working channel to obtain a measurement parameter combination; extracting the measurement parameters with the maximum quantity from the measurement parameters of each category as a second measurement parameter set; determining an average value of various types of measurement parameters from the plurality of second measurement parameter sets as a channel measurement parameter of the working channel of the intelligent antenna; and calibrating the working channel by using the channel measurement parameter to obtain a calibrated working channel. According to the method, iterative measurement and calibration are carried out on a working channel, a calibration result is judged, and alarm information can be generated if necessary; and the calibration efficiency of the working channel of the intelligent antenna is improved.