10results about How to "Improve detection level" patented technology

The invention relates to the field of optical measurement, and discloses a backscattering stray light detection device and method, in the device, after a light beam emitted by a light source module is processed by a light beam processing module, the light beam is divided into a transmission light beam and a reflection light beam by a light splitting flat plate; the transmission light beam enters the unit to be measured to generate back scattering stray light, and the reflection light beam is absorbed by the light absorption module to prevent the reflection light beam from interfering with the measurement result. In addition, the light beam collection module collects back scattering stray light returned from the unit to be detected, and the back scattering stray light is detected through the detector module. According to the design, the influence of stray light is reduced, the sensitivity and accuracy of detection are improved through the synergistic effect of the light absorption module and the light beam collection module, the detection level can be improved to 10 <-10 > W magnitude, more accurate data are provided for gravitational wave measurement, and the precision and reliability of gravitational wave detection are improved.

The invention discloses an X-pin stator post-welding visual inspection system, which relates to the technical field of X-pin motor stator welding inspection equipment, and comprises an X-pin stator, a stator base and a visual inspection part, according to the welding spot characteristic of the X-pin stator of the flat wire motor, the proper 3D line laser camera is adopted to capture the welding spots of the motor stator in the visual field and generate the 3D image, so that the welding spots of the X-pin stator are accurately judged, and the debugging cost is saved; unqualified welding spots after welding can be accurately and efficiently recognized, defects such as welding skips and explosion welding can be overcome, so that outflow of unqualified stators is reduced, and unnecessary loss is avoided; the detection level of the welding quality of the flat wire motor stator is remarkably improved, and the requirements of the new energy automobile industry for high-efficiency and high-reliability motors are met; the perfect welding spot detection logic and the powerful deep learning function of the detection software judge the states of all welding spots in the visual field through a deep learning algorithm and various program logic processes, and different welding spot positions and various welding spot numbers of different product models can be compatible.

The application provides a display panel detection method, electronic equipment and a computer readable storage medium. Specifically, the detection method comprises: acquiring a display picture of a display panel; determining a display abnormal area from the display picture; dividing the display abnormal area into a plurality of sub-areas and determining a corresponding gray scale value variance of each sub-area; determining a fluctuation parameter based on the gray scale value variance; and determining a display abnormal reason of the display picture based on the fluctuation parameter. Specifically, the application determines the gray scale value variance of each sub-area by using the pixel gray scale value size distribution difference in the display abnormal area, obtains the fluctuation parameter of the entire display abnormal area, and then effectively and accurately detects the display abnormal reason of the display abnormal area by using the fluctuation parameter, thereby improving the detection level.

The invention provides a method for detecting the thickness of a thin film by terahertz. The method comprises the following steps: step 1, detecting a thick thin film: carrying out terahertz detection on the thick thin film to obtain a time domain signal; step 2, extracting a function model of the waveform of the pre-pulse signal: extracting a complete function model of the waveform of the pre-pulse signal from the time domain signal; 3, thin film detection: carrying out terahertz detection on the thin film to obtain a damaged time domain signal of the pre-pulse signal; step 4, fitting the waveform of the thin film; and step 5, calculating the thickness of the thin film: calculating the thickness of the thin film based on the flight time between the complete wave crest waveform of the pulse signal before restoration and the complete wave crest waveform of the pulse signal after detection. According to the invention, by processing the signal, the minimum detection thickness of the terahertz time-domain spectroscopy system is increased from more than 20 microns to several microns. The method is simple in principle, high in detection efficiency and accurate in result, and is expected to be applied to nondestructive high-precision detection of the thickness of the ultrathin material in actual engineering.

The present invention discloses an application of a group of 40K SNP sites in the whole genome of cabbage crops. Based on the genome resequencing data of 102 cabbage materials and HDEM reference genome information, the present invention obtains the SNP variation file of each material, further preliminarily screens the site information in the data, and finally selects 62533 sites, and further uses 12 cabbage species test samples to test the 62533 probes synthesized for the first time, and selects sites according to the test results, preferentially selects target segments with good uniformity and polymorphism, and ensures the overall uniform distribution on the chromosome, and finally selects 40399 target segments for liquid chip preparation. The present invention is suitable for genotype detection of cabbage crops, and can be used to develop 40K liquid chips for cabbage crops, and combined with targeted sequencing technology, the genotype of cabbage crops can be measured with high throughput and low cost.

This invention provides a powder sample sampling method and a powder particle size testing method for laser particle size analysis. The sampling method includes the following steps: providing the powder to be tested; determining the theoretical sampling weight range of the powder to be tested based on the expected particle size D50; and weighing the powder sample that falls within the theoretical sampling weight range. This invention accurately determines the theoretical sampling weight range of the powder based on its expected particle size D50, and uses this as the basis for sampling, fundamentally eliminating the uncertainty caused by human operation, improving the repeatability of test results between different operators and different batches; avoiding deviations in shading rate due to excessive or insufficient sampling, ensuring that particle size testing is carried out under optimal optical conditions, and improving the accuracy of test results; users do not need to repeatedly try different sampling amounts, significantly improving the one-time success rate, saving time, reducing sample consumption, and the method is simple, low-cost, and easy to promote.

The invention belongs to the technical field of industrial production monitoring, and discloses an information mask-based industrial production anomaly detection method and a related device. The industrial production anomaly detection method based on the information mask comprises the steps of obtaining original industrial signal data to be detected in industrial production; based on the obtained original industrial signal data, performing data reconstruction by using the trained reconstruction model to obtain a data reconstruction result; and obtaining a reconstruction error between the data reconstruction result and the original industrial signal data, comparing the reconstruction error with a preset reconstruction error threshold, and obtaining an industrial production anomaly detection result based on a comparison result. According to the technical scheme disclosed by the invention, the generalization is enhanced by introducing the information mask and the reconstruction idea, so that the technical scheme can realize efficient anomaly detection in different workshops and different production lines, can adapt to different industrial environments, and can realize real-time detection of abnormal conditions in the industrial production process.

A breathing valve detection device comprises a chassis, a cylinder body is arranged in the chassis, a four-way pipe is communicated with the air path in the cylinder body and is connected with three test branches, a side plate is fixed on the right side of the cylinder body, a curved connecting pipe is arranged on the right side of the side plate and is connected with the right air path of the second three-way pipe, the curved connecting pipe is connected with the top air path of the third three-way pipe, a left detection station and a right detection station are arranged on both sides of the third three-way pipe respectively, a barometer is also arranged on the top surface of the cylinder body, the barometer is connected with the inside of the cylinder body and measures the air pressure in the cylinder body, an air pressure generator is fixedly arranged on the right side of the side plate, an air inlet switch valve and an air outlet switch valve are also fixedly arranged on the top surface of the cylinder body, the positive pressure port of the air pressure generator is connected with the inner air path of the air inlet switch valve, the negative pressure port of the air pressure generator is connected with the inner air path of the air outlet switch valve, a curved pipe is arranged on the outer side of the air inlet switch valve and is communicated with the internal air path of the cylinder body, and a curved pipe is arranged on the outer side of the air outlet switch valve and is communicated with the internal air path of the cylinder body.

This invention discloses a tenon-and-mortise splicing ferrite magnetic shielding device and method. Addressing the limitations of existing ferrite magnetic shielding methods, such as limited overall size, severe magnetic leakage, difficulty in multi-layer adaptation, high cost, and poor maintenance flexibility, as well as the stringent shielding requirements of medical equipment and high-precision atomic magnetometers in complex magnetic environments, this invention introduces a core design of "modular fan-ring units + tenon-and-mortise interlocking structure" and corresponding splicing methods. These methods utilize stepped surface contact tenons to increase the splicing contact area to ensure magnetic flux continuity, multi-layer coaxial positioning benchmarks to optimize tolerance adaptation, independent replacement and cleaning of modular fan-rings, tooling assistance, and performance calibration splicing processes. These improvements enhance magnetic shielding effectiveness and multi-layer adaptation accuracy, while reducing vertical and inter-layer magnetic leakage. Furthermore, based on the modular design and tenon-and-mortise structure characteristics, breakthroughs have been achieved in the fabrication of large-diameter magnetic shielding and independent maintenance of individual fan-rings, reducing the cost of large molds and the overall lifecycle maintenance cost of the equipment.

This invention discloses a low-density liquid chromatography-mass spectrometry (LC-MS) chip for upland cotton based on targeted capture sequencing and its applications. The low-density chip includes 908 SNP loci, of which 329 are significantly associated with important agronomic traits such as fiber quality, yield, and disease resistance in upland cotton, 14 are common transgenic detection loci, and 565 are other loci. This chip is suitable for applications in detecting transgenic components in upland cotton varieties, resource evaluation and kinship identification, seed purity identification, and genetic improvement of major agronomic traits in upland cotton varieties.