8results about How to "Detection is simple and fast" patented technology

The application relates to the technical field of photovoltaic structure production, and discloses a workpiece testing fixture used for detecting the size precision of a connecting hole of a workpiece, which comprises a testing fixture body and at least one detection part. At least part of the profile of the testing fixture body is matched with the outer profile or the inner profile of the workpiece, and the testing fixture body is positioned in close contact with the workpiece during the detection process; the detection part comprises a through hole structure and a plug rod; the through hole structure is arranged on the testing fixture body; the plug rod is arranged through the through hole structure and is used for penetrating the connecting hole; the hole diameter size error or the position deviation of the connecting hole is quickly reflected through the positioning cooperation between the testing fixture body and the workpiece and the plug-in state between the plug rod and the connecting hole. In the utility model, the workpiece testing fixture has the advantages of simple structure, reliable positioning, convenient detection operation, the detection error caused by detection methods or detection postures and the like in the manual detection process can be effectively reduced, and the accuracy and consistency of the workpiece connecting hole detection are improved.

This invention discloses a rapeseed quality detection method based on feature wavelength optimization and multi-model fusion. The method involves collecting full-band near-infrared diffuse reflectance spectral data of rapeseed samples and simultaneously measuring the true values ​​of physicochemical indicators to construct an original dataset. Based on the data distribution characteristics of each physicochemical indicator, the original dataset is divided into a training set and a test set. Preprocessing algorithms are selected for each physicochemical indicator to process the full-band near-infrared diffuse reflectance spectral data. Dimensionality reduction algorithms are selected for each physicochemical indicator to extract feature wavelengths from the preprocessed spectral data. Predictive models for each physicochemical indicator are established based on the training set, and the performance of the predictive models is verified using the test set to determine the optimal algorithm combination for each physicochemical indicator. The variable importance projection algorithm is used to calculate the comprehensive contribution score of each wavelength point in the full-band spectrum to the four physicochemical indicators. A multi-indicator comprehensive threshold is set, and the core light source wavelength of the portable device is determined from the high-score region.

The application discloses a thin layer chromatography method for isolineatin and procyanidin B2 in folium artemisiae and products thereof, and comprises the following steps: using a methanol-water solution with pH of 10-11 as an extractant to prepare a test sample solution; using methanol as a solvent to prepare a control sample solution; respectively sucking the test sample solution and the control sample solution, spotting on a thin layer plate, using dichloromethane-normal propyl alcohol-water-glacial acetic acid as a developing agent to develop, and observing under a UV lamp after air-drying. The application successfully establishes a thin layer chromatography rapid detection method for isolineatin and procyanidin B2 in folium artemisiae and products thereof, which is not only simple in operation, but also can realize semi-quantitative analysis of isolineatin and procyanidin B2, and provides a powerful detection means for quality control of folium artemisiae and products thereof.

The device comprises a horizontal moving structure, a vertical cantilever structure, a telescopic arm structure and a control part, a moving seat horizontally moving along the horizontal moving structure is arranged on the upper portion of the horizontal moving structure, one end of the vertical cantilever structure is fixedly connected with the moving seat, and the other end of the vertical cantilever structure is fixedly connected with the telescopic arm structure. The other end of the vertical cantilever structure is movably connected with the upper portion of the telescopic arm structure, the vertical cantilever structure and the horizontal moving structure are perpendicularly crossed through a moving seat, and a connecting part is arranged on the lower portion of the telescopic arm structure, detachably connected with a pipettor and capable of moving up and down in a telescopic mode along the telescopic arm structure. The control part is connected with the horizontal moving structure, the moving seat, the vertical cantilever structure, the telescopic arm structure and the connecting part in a signal control manner; and the control part can perform signal control on the horizontal moving structure, the moving seat, the vertical cantilever structure, the telescopic arm structure and the connecting part. The device can efficiently detect whether the sample suction precision of the pipettor meets the precision requirement or not, and has the advantages of simple structure and simplicity and convenience in operation.

This invention relates to a method for detecting tobacco black shank resistance genes. G24 SNP molecular markers and their applications. The nucleotide sequence of the PCR amplification product of the SNP molecular marker includes the sequence shown in SEQ ID NO:1. This invention is the first to screen and obtain genes that can specifically identify [the specific gene]. G24 The SNP markers accelerated the precise and efficient use of molecular marker-assisted selection in the breeding of new strains of tobacco resistant to black shank bacterium 0.

The utility model relates to the technical field of part detection equipment, in particular to a motor suspension bracket detection tool, which comprises a detection tool body and a detection pin, the detection pin is detachably mounted on the detection tool body, the upper surface of the detection tool body is provided with a positioning pin and a positioning hole, a bracket is a detected piece and is provided with at least two mounting holes, and the mounting holes are matched with the positioning pin and the positioning hole. The positions of the positioning pins and the positioning holes are set according to the positions of the mounting holes in the bracket, the detection pins comprise a position detection pin and an aperture detection pin, the position detection pin can be inserted into at least one mounting hole and one positioning hole, and the aperture detection pin can be inserted into at least one mounting hole. The device can detect the position, aperture and the like of the mounting hole of the electrode suspension bracket, is efficient and rapid in detection process, is low in cost, and is suitable for large-scale detection.

The utility model belongs to the technical field of detection, particularly relates to a steering knuckle angle precision detection gauge, and aims to solve the problems that a conventional detection method depends on manpower, is time-consuming and labor-consuming, is poor in detection precision and consistency, is inconvenient to adapt to steering knuckles of various specifications, is not good enough in use flexibility and the like. A base plate is fixedly mounted at the top of the bottom plate, a placing hole is formed in the top of the base plate, and the base plate is used for placing the steering knuckle through the placing hole; according to the steering knuckle detection tool, through the ingenious design of the sliding groove, the moving rod and the like, flexible adjustment of the protractor and the identification plate is achieved, the operation difficulty is reduced, high precision of angle measurement is ensured, meanwhile, through the design of the clamping blocks of multiple specifications at the bottom of the clamping base and the combination of the adjusting mechanism, the angle measurement accuracy is improved, and the detection accuracy is improved. The detection tool can be widely adapted to different knuckles, and the versatility and flexibility of the detection tool are enhanced.

This invention discloses a cascaded MZI dual-parameter sensing device and its fabrication method based on the vernier effect, belonging to the field of fiber optic sensor technology. The device is constructed by sequentially fusing a first single-mode fiber, a first tapered few-mode fiber, a second single-mode fiber, a second tapered few-mode fiber, and a third single-mode fiber. A Mach-Zehnder interferometer is constructed by tapering the few-mode fibers, and a dual-interferometer structure is formed through cascading, utilizing the vernier effect to amplify the spectral response. This structure effectively enhances the effect of the measured parameters, significantly improves the detection sensitivity for temperature and stress, while reducing size and cost. This invention has a simple and reliable structure, is easy to deploy in complex environments, and can be widely applied in fields such as geological monitoring and structural safety inspection, possessing good prospects for technological transformation and social benefits.