30results about How to "Simple and accurate" patented technology

The present invention provides a novel method for detection of liver cancer. This method detects high-sensitively, high-specifically, simply and accurately liver cancer, especially that in early stage by identifying and / or quantifying methylation on particular genes and / or their DNA fragments in clinical specimens, and by combining said methylated DNA values with existing tumor marker values and / or DNA amounts in blood. This invention also detects a precancerous lesion, detects a risk of recurrence after treatment of liver cancer, detects malignancy of liver cancer and monitors progression of liver cancer with time by the same method. As for particular genes, BASP1 gene, SPINT2 gene, APC gene, CCND2 gene, CFTR gene, RASSF1 gene and SRD5A2 gene are mentioned.

A method to measure the brake force for railroad vehicles without replacing any part of the braking system, comprising the steps of opening a clearance between the braking elements, inserting a special sensor between the braking elements and applying the brake followed by the processing of the signal generated by the sensor and displaying the result in force units. A device to measure the brake force for railroad vehicles, which uses a sensor, the main part of which is a prismatic steel plate (3) with strain gauges (4a, 4b, 5a, 5b,) on both sides. To measure the brake force, the sensor is positioned, depending on the braking system, between the brake shoe (1) and the wheel tread (2) or between the brake pad and the brake disc. When the brake is applied, the sensor comes in contact with the braking surfaces (brake shoe / brake pad and wheel tread / brake disc) through (the intermediary of) four drill rods (6a, 6b, 7a, 7b,) affixed to the sensor body (3), two on each side, in such a way that the mechanical contact between each rod and the sensor body is over a line and the sensor is submitted to a bending moment. To make the device adaptable to any wheel diameter or wear of the brake components and to protect the brake shoe surface, each of the two rods (7a, 7b,) on the brake shoe side (for braking systems using a brake shoe), has a steel wing (8a, 8b,) elastically seated on it. The wings are kept in place by three rubber membranes (9, 11a, 11b,) connecting the wings between them and to the sensor body. The sensor is kept in place during measurements by two sets of magnets (13a, 13b) embedded into two rubber strips (12a, 12b,) bonded on two opposite sides of the sensor body (3).

The invention belongs to the technical field of face recognition and especially relates to a novel precise face recognition system. The system includes a high definition camera, an infrared human bodysensor, an auxiliary light source, a control chip, a Gabor filter, an image normalizer, an ARM processor, a database and a display device. An expression action recognition filtering and comparison DSP processor is also connected with an expression action recognition buffer module. Through setting of the expression action recognition filtering and comparison DSP processor and the expression actionrecognition buffer module, a series of expressions or actions for identity verification of a person can be taken as identify verification information, so that credit card fraud when the precision face recognition system is applied to payment can be prevented and a problem of face recognition of twins can be solved easily.

The invention relates to the technical field of automobile control, in particular to a ramp speed limit recognition method. The method comprises steps of judging whether the vehicle runs at a high speed or an elevated road; if yes, the lane position where the vehicle travels is judged; and if the vehicle runs on the rightmost lane, judging whether the currently recognized speed limit sign is a ramp speed limit sign or not according to the change condition of the right lane line of the vehicle, the running condition of the vehicle and the comparison condition of the currently recognized speed limit sign and the previous recognized speed limit sign. The ramp speed limit recognition method is simple and small in logical operation amount, does not cause burden to a control system, can accurately and quickly recognize ramp speed limit, is high in accuracy, and has great popularization value.

The invention provides a wooden material grinding force determining method. The method comprises the following steps of calibrating the relation between a force in the horizontal direction and an electric signal value by utilizing a deweighting method, carrying out linear-regression analysis on the obtained electric signal value and the force in the horizontal direction to obtain a proportional relation of the grinding force and the electric signal value; horizontally placing a wooden material test piece onto a worktable through a tool, arranging a force sensor between the worktable and the tool, connecting the force sensor with a charge amplifier, connecting the charge amplifier with a signal analyzer, and connecting the signal analyzer with a computer; grinding a wooden product, generating a charge value through the variation of the horizontal force on the test piece detected by the force sensor, utilizing the charge amplifier and amplifying and converting the charge value to a voltage signal to be collected by the signal analyzer, fitting the electric signal collected by the signal analyzer to obtain an electric signal value, and converting the electric signal value according to the proportional relation to obtain a maximal value and an average value of the grinding force. The determination method is strong in real-time property, strong in accuracy, simple, high efficient and reliable.

The invention relates to the electrical drilling for the seamless tube blank. It uses a robot to grip a carbon element made contact head, adjusting the location of the contact head manually or using programmable controller, with the contact aiming to the center of the tube blank, raising the robot, delivering the tube blank till the drilling position, connecting one end of the electric power with the contact head, the other end with the tubular blank, dropping down the robot, aligning the center of the tube with the robot quickly contacting the tube blank end surface smelting the metal through electric arc to get the required holes. Using electrical arc, it is simple in centering, stable and reliable with quick drilling speed, fine quality, low cost, improved pass rate, easy for the realization of automatic production.

The invention relates to the electrical drilling for the seamless tube blank. It uses a robot to grip a carbon element made contact head, adjusting the location of the contact head manually or using programmable controller, with the contact aiming to the center of the tube blank, raising the robot, delivering the tube blank till the drilling position, connecting one end of the electric power with the contact head, the other end with the tubular blank, dropping down the robot, aligning the center of the tube with the robot quickly contacting the tube blank end surface smelting the metal through electric arc to get the required holes. Using electrical arc, it is simple in centering, stable and reliable with quick drilling speed, fine quality, low cost, improved pass rate, easy for the realization of automatic production.

The invention discloses an antenna downtilt angle measurement method based on a deep instance segmentation network, which includes the following steps: taking a full-range antenna video by a drone; transmitting the antenna video to a server in real time, and the server measures the antenna in real time through a deep learning algorithm Downtilt; the deep learning algorithm includes: a feature extraction network module for obtaining antenna feature images; the instance segmentation module includes the following steps: the region of interest is directly mapped to the feature map; the candidate region is divided into k*k units , calculate the four fixed coordinate positions used to determine the center point of the unit for each unit, and calculate the values ​​of the four fixed coordinate positions by bilinear interpolation; perform the maximum pooling operation and realize backpropagation. By distinguishing antenna pixels and background pixels through the instance segmentation module, the downtilt angle of the antenna is more accurate, and a convenient, safe, effective and accurate antenna measurement method is established.

The invention provides a determining method for fracturing water horsepower. By improving the calculation precision of the frictional resistance of a fracturing fluid, frictional resistance calculation is accurate, and obtained construction pressure is accurate, so that the fracturing water horsepower is more accurate, material consumption is reduced, and the cost is saved. By using the method ofcombining the experiment with the theory, through the frictional resistance experiment of indoor small pipe column inner diameter and a guanidine gum liquid, the relationship between flow rate and antifriction ratio is obtained by using a fitting method, and then by using the obtained relationship, the frictional resistance of different pipe column inner diameters and the guanidine gum fracturingliquid under the flow rate is calculated. By means of the method, the problem that the coefficient of empirical formula is difficult to calculate is avoided, calculating of the antifriction ratio is simpler and more accurate, and the calculated frictional resistance of the guanidine gum fracturing liquid is closer to the actual frictional resistance.

The present invention relates to a method for solving the phase lag caused by three-phase current sampling and filtering, electronic equipment, and a computer-readable storage medium, wherein the method includes: step A. sampling the three-phase AC signal of the frequency converter and storing it as a digital measure the AC signal; Step B. Convert the digital AC signal into a digital DC signal, and filter the converted digital DC signal through a digital low-pass filter; Step C. Invert the filtered digital DC signal The conversion is restored to a three-phase AC signal. The invention solves the problem of phase lag when the controller filters the three-phase AC signal, the signal sampling and filtering are accurate, the service life of the frequency converter is greatly extended, the failure rate is greatly reduced, and the software filtering algorithm is simple and accurate, and the filtering reliability and effectiveness are greatly improved. strengthen.

A system for a user to simply and precisely grasp various information on the balance occuring at one or more steps. The balance management system is constructed of a server and is provided with a DB (information managing means), information acquiring means information updating means and information providing means. The DB manages information on the balance of a balance item and information on the correspondence for each step that which balance of a balance item reflects the balance of which step item. The information acquiring means acquires information on each step item and the balance corresponding to the step item, from the first terminal corresponding to each step. The information updating means updates the information on the balance of the balance item corresponding to the step item, on the basis of the information on the correspondence managed by the DB and the information on the step item and the balance acquired by the information acquiring means. The information providing means provides a second terminal with the information on the balance item and the balance of one or more steps managed by the DB.

The invention belongs to the field of railway vehicles, and discloses a POLACH improved model establishment method suitable for a large-slip working condition, and the method comprises the steps: firstly, building an initial POLACH model based on the input vehicle speed in a braking anti-slip period, the rotation speed of a vehicle wheel set, and preset wheel rail characteristic parameters; then, based on a preset working condition-friction parameter corresponding table and the initial POLACH model, a period upper limit adhesion coefficient and a period lower limit adhesion coefficient are obtained respectively; then, a conversion function reflecting the numerical fluctuation characteristic of the wheel rail adhesion coefficient in the braking antiskid period is established based on the rotating speed of the vehicle wheel set; and finally, establishing a POLACH improved model which is related to the periodic average adhesion coefficient, the periodic lower limit adhesion coefficient, the periodic upper limit adhesion coefficient and the conversion function in the braking anti-slip period and is suitable for the large-slip working condition. The invention further discloses a storage medium and a measuring and calculating system of the POLACH improved model suitable for the large-slip working condition.

The embodiment of the invention discloses an image comparison method, device, equipment and storage medium. The method includes: determining the brightness histogram and / or chromaticity histogram of each image to be compared according to the brightness value and / or chromaticity value of the image to be compared; or chromaticity histogram to determine the similarity between the images to be compared, not only can quickly search for similar images, but also the implementation process is simple and efficient.

The invention discloses a method for identifying construction waste, comprising: obtaining 2D images of construction waste, obtaining contours of each waste from the 2D image, and judging the material of the waste; obtaining X-ray images of construction waste, and analyzing X-ray images according to the area corresponding to the contour of the waste. The transmittance is used to judge the material of the garbage; the weighted calculation is performed on the judgment results of the previous steps to obtain the final material of the garbage. In addition, the present invention also discloses a kind of construction waste sorting equipment, which adopts the above-mentioned construction waste recognition method to identify recyclable waste and impurities, and its processing device also recognizes the position of each waste contained in the 2D image in the 2D image and recognizes the The position of the garbage whose material is impurities is sent to the robot, and the robot grabs the impurities at the real-time position of the conveying mechanism according to the position sent by the processing device and the construction waste sent by the encoder. The identification accuracy of impurities and recyclable garbage is high and will not harm the human body. cause excessive damage.