31results about How to "Avoid data distortion" patented technology

The invention relates to an atmospheric automatic monitoring apparatus capable of realizing sampling/calibrating alternative equivalent operation, and a method thereof. An air path center system is arranged, a standard gas introduction mode during apparatus calibration is improved, and a relay connects a dynamic calibrator, a solenoid valve and a sampling pump; when calibration is carried out, the dynamic calibrator is started, and the solenoid valve and the sampling pump are closed through powering off the relay; and when sampling is carried out, the dynamic calibrator is closed, and the solenoid valve and the sampling pump are started through powering on the relay in order to realize the alternative equivalent operation process of calibrating/sampling. An air acquisition system is a sampling head, a standard gas generation system comprises a standard gas tank, a zero gas generator and the dynamic calibrator, the air path center system comprises an air path center channel, an intelligent transition control system comprises the sampling pump, the solenoid valve and the relay, a temperature control device comprises a humiture probe and asensor, a humiture controller and a heat insulation cover, and a pollutant analysis system comprises a plurality of filtering devices and an analyzer.

The invention provides a novel method for inverting bridge bearing capacity by a ground-based radar. The method comprises the following steps: scanning a bridge by utilizing the ground-based radar, combining continuous waves with frequency modulation and an interferometry technology to detect strain conditions of the bridge at any moment and at any position, and obtaining a displacement time sequence chart, a displacement time series spectrogram, an amplitude spectrogram, a time-domain deflection form chart, a frequency-domain deflection form chart of bridge monitoring sites; and providing a theoretical basis for bridge bearing safety according to the actual bridge bearing capacity during a static load test of ground-based radar data inversion and the autodynamic performance and dynamic response data of the bridge structure during a dynamic load test. According to the method disclosed by the invention, other instruments do not need to be installed on the bridge, namely bearing capacityinformation (comprising natural vibration frequency, deflection and the like) at any scanning position of the bridge and under different working conditions can be acquired at precision of 0.01mm, andnon-contact measurement is performed. According to the method disclosed by the invention, static bridge measuring and dynamic monitoring can be realized, the vibration frequency reaching 4000Hz of the bridge can be monitored, and data distortion brought by data conversion among multiple instruments during the traditional monitoring is avoided.

The invention provides a household appliance abnormity diagnosis method and system, a server and a household appliance. The household appliance abnormity diagnosis method comprises the following steps: an operation instruction is sent to the household appliance, so that the household appliance executes the operation instruction so as to generate result data; the result data of the household appliance is received; whether the household appliance is abnormal is diagnosed according to the result data and a preset diagnosis algorithm. According to the technical scheme, abnormity of the household appliance can be diagnosed more rapidly and accurately, more accurate household appliance maintenance information can be further provided for a user, the satisfaction degree of maintenance service for the user is increased, the diagnosis algorithm can be updated on line, so that the service quality is improved while the maintenance cost is reduced, and the user experience is improved.

The invention discloses a ground laser point cloud based solar energy potential evaluation method, which comprises the steps of S1, rarefying the original point cloud; S2, performing extraction of a ground point set R in a region of interest on the rarefied point cloud P, wherein the rarefied point cloud P is a subset of the ground point set R; S3, setting a light source deviation control angle; S4, quickly calculating the position and the number of base points by adopting a farthest-first traversal strategy; S5, calculating the base point sun position; S6, performing shading analysis on a three-dimensional point cloud scene by adopting a generalized hidden point removal (GHPR) algorithm, and thus performing sunlight simulation calculation; S7, performing binary shadow rendering on a shading analysis result; and S8, performing solar radiation calculation on the point cloud scene. The evaluation method disclosed by the invention can provide quick and efficient automatic evaluation for solar energy resources, and can provide a three-dimensional solar energy resource distribution map in any time period of an investigated area for users.

The invention provides an abnormity diagnosis method, an abnormity diagnosis system, a server, a household electrical appliance and an environment sensor. The method comprises the steps of transmitting a first operation instruction to the household electrical appliance to allow the household electrical appliance to execute the first operation instruction to generate first result data, transmitting a second operation instruction to the environment sensor to allow the environment sensor to execute the second operation instruction to generate second result data, receiving the first result data from the household electrical appliance and the second result data from the environment sensor, and diagnosing whether the household electrical appliance is abnormal according to the first result data, the second result data and a preset diagnosis algorithm. With the adoption of the technical scheme, the abnormity of the household electrical appliance can be diagnosed more rapidly and accurately; on-line updating of the diagnosis algorithm can be realized; the maintenance cost is lowered; the service quality is further improved; and user experience is improved.

The invention provides a dam piping and landslide disease rapid detection method and system. The method comprises the steps of obtaining dam point cloud data of a to-be-detected area; inputting the dam point cloud data into a piping and landslide feature recognition model, wherein the piping and landslide feature recognition model is used for conducting feature extraction on the point cloud data to obtain edge feature points of the point cloud data, and piping and landslide feature recognition is conducted on the edge feature points to obtain piping and landslide part data; therefore, the problems of how to avoid data distortion caused by influence on the edge part of a hole lacking point cloud and how to avoid the problems that piping is high in concealment, rapid in development and prone to harm detection personnel in the large-range dam detection process are solved, manual intervention is reduced for piping and landslide detection, the automation degree is improved, and the high-precision detection of dam piping and landslide is realized.

The invention provides a well cementation cement paste low-temperature thickening instrument which comprises a case, wherein an operation table is arranged on the case, and a control panel is arrangedon the operation table; at least one pulp cup mounting device arranged in the case, wherein a pulp cup is mounted on the pulp cup mounting device, a consistency meter is arranged on the pulp cup, and the consistency meter is used for measuring the thickening degree of an object in the pulp cup; a temperature adjusting device arranged in the case, connected with the pulp cup and used for controlling the temperature of the pulp cup; and a control device arranged on the control panel and comprising a motor control device for controlling the pulp cup mounting device to rotate and a temperature control device for controlling the temperature adjusting device. The device can simulate the thickening condition of well cementation cement paste in a low-temperature environment.

The invention discloses a signal modulation method, a signal modulator and a signal modulation system. The signal modulation method comprises the steps of accessing a data signal; accessing a data signal and a carrier signal; extracting a carrier signal in a first level period of the data signal to obtain a first carrier signal; detecting the edge of the data signal to generate a first pulse signal associated with the edge, wherein the amplitude V1 of the first pulse signal is greater than the amplitude V2 of the first carrier signal; superposing a first carrier signal on the first pulse signal to obtain a transmission carrier signal; performing capacitive coupling output on the transmission carrier signal; and receiving the transmission carrier signal subjected to capacitive coupling andperforming data recovery to obtain a data signal. According to the embodiment of the invention, the edge modulation mode is realized through the first pulse signal, the on-off keying modulation mode is realized through the first carrier signal, the signal modulation method combines the two modulation modes to improve the transmission quality of the modulation signal and the control accuracy of thedata information, and the signal modulation performance is better.

A memory system may include: a memory pool including a plurality of memory regions; and a controller suitable for controlling the memory pool, wherein each of the memory regions includes one or more row groups, each row group having a predetermined row group size, and wherein the controller counts the numbers of row accesses to the respective memory regions, determines row group sizes according to the row access counts of the respective memory regions, increases a representative access count of a row group including a certain row when the row is accessed, and provides a command to the memory pool to perform a target refresh operation on a target row group whose representative access count exceeds a threshold value.

The invention discloses an enterprise risk early warning method and device, electronic equipment and a readable storage medium. The method comprises the steps of obtaining a plurality of indexes of enterprise safety production and values of the indexes, and determining an enterprise safety early warning index according to the obtained indexes and the values of the indexes; and performing early warning on enterprise risks according to the enterprise safety early warning index and a preset early warning rule. The enterprise management level can be monitored in real time, the selected data indexes cover the requirements of the enterprise safety production standardization basic specification GB/T 33000-2016, the conditions and change trends of the enterprise safety production condition in all aspects can be represented, qualitative and quantitative indexes are combined, and the enterprise safety production quality is improved. Meanwhile, selection of index items can be continuously adjusted according to safety production conditions of different enterprises and acceptable degrees of enterprise risks so as to adapt to development requirements of the enterprises; according to the invention, manual data management and manual early warning message issuing are not needed, and data distortion caused by manual misoperation is avoided.

The invention discloses an automobile working condition construction method based on a greedy algorithm. The method comprises: firstly, collecting actual road driving data of an automobile, and processing abnormal data in original data; then, extracting a complete kinematics fragment of the automobile in the sampling period from the data, and selecting characteristic parameters to characterize the kinematics fragment; then, adopting a principal component analysis method to carry out dimensionality reduction on the characteristic parameters of information overlapping, according to the score of each principal component, adopting a K-means algorithm optimized by an initial clustering center to carry out fragment classification, and extracting representative kinematics fragments from each classification; and finally, on the basis of the principle of a greedy algorithm, constructing an optimal automobile driving condition by utilizing representative kinematics fragments. The method can accurately reflect the actual automobile driving condition of a city, and improves the accuracy of automobile working condition calibration.

Disclosed are a display apparatus and a method of driving the same. The display apparatus includes an optical module, a display panel and a display panel driver. The display panel is disposed on the optical module. The display panel driver is configured to drive the display panel. The display panel includes a first display area including at least a portion overlapping with the optical module and a second display area not overlapping with the optical module in a plan view. The first display area includes pixels having a first pixel structure. The second display area includes pixels having a second pixel structure different from the first pixel structure.

The invention provides a well cementation cement paste low-temperature dehydration instrument, which belongs to the field of well cementation engineering test devices in oil and gas development, and comprises a dehydration instrument main machine, main machine which is arranged on a support device; a paste cup arranged in the dehydration instrument main machine, wherein paste is contained in the paste cup and used for measuring the water loss amount of the paste; a temperature control device arranged in the dehydration instrument main machine, connected with the paste cup and controlling the temperature of the paste cup; and a pressurizing device connected with the paste cup and controlling the air pressure in the paste cup. According to the invention, the dehydration condition of the wellcementation cement paste in a low-temperature environment can be simulated, so that the dehydration performance of the well cementation cement paste in the low-temperature environment can be tested.

The invention provides a method and device for obtaining PDF annotation information. The method can obtain the annotation information from an FDF document, and the annotation information of the PDF document stored in the FDF document can be directly obtained by analyzing the FDF document. Wherein the FDF document data format is a data format type similar to a PDF document structure, the FDF document format is completely compatible with all data types defined by the PDF document format, and the FDF document data format is a data format which can be compatible with most PDF reading products. When data transmission is carried out between different PDF documents, the annotation information is stored in the FDF document similar to the PDF document in data structure, so that the annotation information is more convenient to extract, and the problem of data distortion can be avoided.