55results about How to "Reduce installation and usage costs" patented technology

The invention provides a coronary heart disease electrocardiogram screening system based on a residual neural network, and the system comprises an electrocardiosignal processing module which is used for extracting electrocardiosignals generated by an electrocardiograph, carrying out the multi-layer decomposition and noise reduction of the electrocardiosignals through employing a symlets4 wavelet, searching the position of an R wave in electrocardiosignal sequence data converted from the electrocardiosignals, and carrying out the heart beat segmentation based on the position of the R wave; a depth feature extraction module which is used for performing translation and scaling on the data processed by the electrocardiosignal processing module to enhance the data, and extracting the depth features of the twelve-lead electrocardiogram by using a ResneXt50 network comprising an extrusion and excitation network module; and a tree model prediction module which is used for combining the depth features extracted by the depth feature extraction module with electrocardiograph data, and inputting the trained XGBoost model to obtain the prediction probability of the coronary heart disease electrocardio features in the electrocardiogram. The system is low in installation and use cost, can achieve automatic screening, is higher in accuracy compared with diagnosis of an electrocardiograph, can reduce misjudgment or missed judgment, and reduces the workload of doctors.

The invention discloses a sample automatic feeder of a full automatic fecal occult blood analyzer. The sample automatic feeder consists of a driving mechanism, a bar code scanning mechanism and a retaining tube mechanism, all of which are arranged on a base plate, wherein the driving mechanism consists of a motor, a synchronous belt and a sample tube frame, a transmission shaft of the motor is connected with a rotary shaft of the sample tube frame through the synchronous belt, the motor drives the sample tube frame to rotate through the synchronous belt, the bar code scanning mechanism consists of a bar code scanner and a support, the support is arranged on the base plate, the retaining tube mechanism consists of a retaining rod, a pull rod, an electromagnet and a tension spring, the retaining rod and the pull rod are connected by a pull rod shaft, and the pull rod drives the retaining rod to rotate through the pull rod shaft. The sample automatic feeder of the full automatic fecal occult blood analyzer, disclosed by the invention, has the beneficial effects of simple structure, convenience for using, stability in mechanical operation and lower installation use cost.

The invention discloses a vehicle identification method based on distributed optical fiber sensing in intelligent traffic. The vehicle identification method comprises steps that by using existing communication optical fibers on road sides or laying the optical fibers on the road sides, and optical fiber vibration detection sensing units are connected with road side optical fibers to form a distributed optical fiber sensing system, which is used to acquire vehicle vibration information of vehicles moving around the optical fibers; the time domain analysis, the frequency domain analysis, and the time frequency combination analysis of the acquired vibration signals are carried out to extract characteristics representing the vehicle vibration, and then characteristic vectors are formed; by adopting a mode identification method, the extracted characteristic vectors are used to identify categories, positions, numbers, and other traffic statistic quantities of vibration objects. The vehicle identification method is advantageous in that blind points of conventional vehicle detection are overcome, and the identification rate and the reliability of the vehicle detection in the intelligent traffic are improved.

The present disclosure relates to a projection image adjustment method, device, storage medium, and electronic equipment, the method comprising: acquiring a target image obtained by shooting a projection area with a camera; determining a first imaging image and a second imaging image in the imaging coordinate system of the target image Two imaging images; calculate the first mapping relationship between the first imaging image and the source image in the projected coordinate system; calculate the second mapping relationship between the second imaging image and the preset user perspective image; based on the The first mapping relationship and the second mapping relationship map the source image to the user perspective coordinate system; determine the intersection area of ​​the source image and the second imaging image in the user perspective coordinate system, and obtain from the determining a target area in the intersection area; mapping the target area to the projection coordinate system to obtain a target projection area on the projection screen, and adjusting the projection image according to the target projection area.