13results about How to "Improve detection timeliness" patented technology

The invention provides a non-stationary industrial process monitoring method and system. The method comprises an offline training stage: calculating a time Laplacian matrix and a space Laplacian matrix based on a historical data matrix; constructing an objective function of the stationary subspace analysis method, and adding a time constraint term of a time Laplacian matrix and a space constraint term of a space Laplacian matrix into the objective function; solving the objective function to obtain a stable projection matrix; calculating a stationary component and a monitoring index of each sample in the data matrix X in sequence; determining a control limit by using a kernel density estimation method; an online monitoring stage: based on the real-time operation data x, calculating a stationary component of the real-time operation data x and a corresponding real-time monitoring index according to the stationary projection matrix, and if the real-time monitoring index is greater than a control limit, judging that the operation of the non-stationary process has a fault; the monitoring accuracy can be improved.

The invention relates to the technical field of detection, and particularly provides a method for determining the content of squalene in baijiu, the method utilizes gas chromatography-triple quadrupole mass spectrometry to determine the content of squalene in baijiu with different flavors, and the content of squalene in baijiu with different flavors is determined by adding reagents such as vitamin C and vitamin E and adopting effective treatment measures such as parallel concentration in a sample pretreatment process. The method improves the detection result repeatability and the detection efficiency, reduces the detection limit, has the advantages of good repeatability, high sensitivity, high detection efficiency and small organic solvent dosage, and is beneficial to environmental protection and occupational health and safety.

The present invention discloses a method and device for security detection of compressed packages based on embedded similar file names, and relates to the technical field of compressed package detection. The method comprises: performing depth-first traversal on each layer of subdirectories of the compressed package to be detected, obtaining the subfile names in each layer of subdirectories, and obtaining a file name set; performing similarity detection on the file names in the file name set, and obtaining the number of similar file names with similar file names; judging whether the number of similar file names exceeds a first threshold, and if it exceeds the first threshold, accumulating the value of the similar file name group; judging whether the value of the similar file name group exceeds a second threshold, and if it does not exceed the second threshold, continuing to perform depth-first traversal on the compressed package to be detected; if it exceeds the second threshold, judging that the compressed package to be detected is a package bomb, and exiting the detection. The present invention is suitable for security detection of compressed packages.

The invention relates to the technical field of cable detection, and discloses an outdoor high-altitude cable detection device with a Tiantong data transmission network. The detection device comprises an unmanned aerial vehicle main body of an airborne Tiantong satellite communication system, lateral overturning assembly grooves are formed in the two side walls of the unmanned aerial vehicle main body, electric control overturning type adjusting mechanisms are movably assembled in the lateral overturning assembly grooves, and electric control type lifting arms are movably assembled in the electric control overturning type adjusting mechanisms; electric control type top driving wheels are movably assembled on the inner top faces of the electric control type lifting arms, and a visual sensing probe, an optical distance measuring probe and an optical detection unit are assembled on the upper surface of the unmanned aerial vehicle body. According to the detection device, the Tiantong satellite technology is adopted for direct information transmission, the detection device is not affected by a land base station, and information communication is more convenient; the unmanned aerial vehicle body is adopted as a carrier for control, manual conveying is not needed, and the transfer cost is saved; the device is hoisted on the cable in a lateral overturning manner, does not need to be driven by an unmanned aerial vehicle main body in the detection process, and is good in cruising ability.

The invention provides a water quality detection system and method, and the system comprises a detection module which comprises a detection electrode and an automatic titration unit, and the detection electrode is configured to detect the concentration of free ammonia in a water sample to be detected and convert the concentration into a potential signal; the automatic titration unit is configured to titrate an alkaline solution into the water sample to be detected so as to convert fixed ammonia into free ammonia; and the control and data processing module is electrically connected with the detection module, and is configured to receive the potential signal, control the start and stop of the automatic titration unit according to the received potential signal, and calculate the total content of free ammonia and the total content of ammonia in the ammonia distillation wastewater according to the potential signal and the titration amount of the alkaline solution. The water quality is monitored in real time, the problems of long detection period and poor time efficiency of the existing ammonia distillation wastewater are solved, manual operation errors are reduced through automatic operation, and the detection precision is improved.

The present invention discloses a time series-oriented repeated similar data cleaning optimization method. Repeated similar data cleaning is the most commonly used technology in data preprocessing and an important means to improve data quality. Therefore, improving the timeliness of large-scale repeated similar data detection is of great significance. In this regard, the present invention proposes a repeated similar data detection algorithm oriented to time series characteristics. The algorithm is based on the traditional nearest neighbor sorting algorithm SNM, supports dynamic adjustment of window size, and supports window jump sliding. The introduction of this algorithm greatly reduces the number of comparisons of data records, and both theoretical and experimental results show that the algorithm can effectively improve the detection efficiency of repeated similar data.

The utility model discloses a test device for radio interference test of high-voltage electrical equipment, which comprises two drum-shaped voltage-sharing mechanisms with the same structure, the two voltage-sharing mechanisms are connected through four long connecting rods, a four-split spacer is mounted in the middle of each long connecting rod, and a test object is mounted on the four-split spacer; each pressure equalizing mechanism comprises a plurality of concentric metal rings, the inner walls of the rings are welded to the supporting rings, the diameter of the middle ring is the largest, and the diameters of the rings symmetrically arranged on the front side and the rear side of the middle ring are gradually decreased. According to the utility model, the two symmetrically arranged drum-shaped voltage-sharing mechanisms are connected through the long connecting rod, and a test object is installed on the voltage-sharing device or is connected in series with the voltage-sharing device, so that a voltage-sharing protection effect on unbalanced voltage possibly generated at two ends of a test loop in a radio interference test of high-voltage electrical equipment is achieved; and the influence on the radio interference measurement result of the test object is reduced.

This invention discloses a TaqMan real-time fluorescent PCR detection primer and probe set, kit, and detection method for Cuscuta pentaphyllum. The primer and probe set includes: an upstream primer C. pan F, whose nucleotide sequence is shown in SEQ ID NO.1; a downstream primer C. pan R, whose nucleotide sequence is shown in SEQ ID NO.2; and a TaqMan probe C. pan P, whose nucleotide sequence is shown in SEQ ID NO.3. The primers and probe target specific fragments of the rbcL gene sequence of Cuscuta pentaphyllum, achieving specific recognition of Cuscuta pentaphyllum through sequence complementarity matching. This avoids false positive results caused by cross-reactions with closely related species and host plants at the molecular targeting level, effectively solving the problem of difficulty in distinguishing closely related species in traditional morphological identification. Compared with traditional morphological identification and conventional PCR, this invention also features high detection efficiency, short processing time, simple operation, and wide applicability. It is suitable for precise identification in professional laboratories and can also meet the practical applications in grassroots quarantine and field monitoring scenarios.

The application relates to the technical field of automatic control, in particular to a solid-liquid reaction control device based on digital microfluidics, which comprises a control module, a detection module, a solid fixing module, a solid plate and a digital microfluidic chip; the solid fixing module can be fixed below the digital microfluidic chip; the solid plate is used for loading solid and is detachable, can be inserted into the solid fixing module and can send the solid into the digital microfluidic chip; the digital microfluidic chip is provided with an in-out sample area, a solid-liquid reaction area and a detection area, and the areas are connected through electrodes; the in-out sample area is provided with a liquid storage pool which is used for storing reaction solution; the control module controls the voltage of each electrode to realize micro-droplet movement; the solution in the liquid storage pool is controlled to move to the solid-liquid reaction area, contacts the solid and reacts, and the solution can also be moved out of the solid-liquid reaction area to interrupt the reaction process of the solid; the control module can also control the to-be-detected micro-droplet to move to the detection area; and the detection module detects the to-be-detected micro-droplet in the detection area through a sensor probe thereof.

The invention relates to a lung cancer targeted therapy multi-gene multi-mutation type sequencing library construction method and a kit, and belongs to the technical field of gene sequencing. The lung cancer targeted therapy multi-gene multi-mutation type sequencing library construction method comprises the following steps: designing a multiple PCR amplification primer group based on a targeted diagnosis gene, and carrying out a round of PCR amplification to obtain a round of PCR amplification product; adding a magnetic bead liquid into a primary PCR amplification product, performing magnetic bead purification to obtain a purified product I with magnetic beads, and performing enzyme digestion; adding magnetic bead liquid into the purified product I with the magnetic beads after enzyme digestion, and purifying the magnetic beads to obtain a purified product II; and carrying out two-round PCR amplification on the purified product II to obtain a two-round PCR amplification product, adding magnetic bead liquid into the two-round PCR amplification product, and purifying magnetic beads to obtain the product. According to the invention, the target area is amplified through multiple primers, the construction of the sequencing library is rapidly completed in a short time, and the UMI tag is introduced when the sequencing library is constructed, so that the detection sensitivity and accuracy are improved.

The rapid detection device comprises a main box body and a detection box, the detection box made of toughened glass is fixed in the main box body, the upper end face of the main box body is provided with a liquid inlet pipe communicated with the detection box, the left end face of the main box body is further provided with a feed port communicated with the detection box, and the feed port is communicated with the detection box. A fixed plate is fixed to the right side in the main box body, an ultraviolet lamp and a fluorescence detector are fixed to the left end face of the fixed plate, an electric telescopic rod is further fixed to the upper end face of the main box body, and the output end of the electric telescopic rod penetrates through the main box body to be connected with the movable plate. According to the rapid detection device for the polycyclic aromatic hydrocarbon, a lifting type stirring mechanism is adopted, rapid and uniform mixing of a to-be-detected object and an extraction solution can be achieved, a heating effect can be achieved in cooperation with a temperature control heating mechanism, so that the extraction efficiency is effectively improved, the detection aging is accelerated, and solid-liquid isolation can be achieved in the detection process in cooperation with the effect of a movable plate; therefore, the accuracy of detection data is prevented from being influenced by blocking of the to-be-detected object.

The application discloses a probe primer group, a kit and a detection method for detecting European dodder, wherein the probe primer group comprises an upstream primer Ce-rbcL-F, a downstream primer Ce-rbcL-R and a TaqMan probe Ce-rbcL-P; the nucleotide sequence of the upstream primer Ce-rbcL-F is shown as SEQ ID NO. 1; the nucleotide sequence of the downstream primer Ce-rbcL-R is shown as SEQ ID NO. 2; and the nucleotide sequence of the TaqMan probe Ce-rbcL-P is shown as SEQ ID NO. 3. The primer probe group is designed based on a specific region of the rbcL gene of European dodder, and specific identification of European dodder can be realized by combining an optimized real-time fluorescent PCR reaction system and conditions, namely, the application has the characteristics of rapidness, strong specificity, high identification accuracy, effectively solves the problem that near relatives are difficult to distinguish in traditional morphological identification, and avoids false positive misjudgment. Compared with traditional morphological identification and conventional PCR, the application also has the characteristics of high detection efficiency, short time consumption, simple operation and wide applicability, and can be applied to not only professional laboratory accurate identification, but also practical application of scenarios such as primary quarantine and field monitoring.

The invention provides a mass spectrometric detection method for N heterocyclic ketone and / or N heterocyclic chiral amino compounds, and in the mass spectrometric detection method, a declustering voltage value is 20-40V, preferably 30V. And the high-throughput screening method is applied to directional transformation of the functional enzyme, so that the screening efficiency of the functional enzyme mutant is improved.