40results about How to "Good culling effect" patented technology

The invention discloses a method for non-meteorological noise in radar echoes, which comprises the steps of: identifying noise areas existing on an 1.5 DEG elevation plane and an 0.5 DEG elevation plane by simply classifying the radar echoes, then analyzing reflectivity factor values of the echoes and then orderly referring radial velocity values and spectrum width values; performing a best noiserejection strategy on different noises after the noise areas are correctly identified; directly adopting a rejection strategy for noises under the conditions of clear sky and no precipitation echoes at peripheries; and adopting an approximate value filling mechanism for noises which are mixed in the precipitation echoes or are adjacent to the precipitation echoes so as to achieve better rejectioneffect.

The invention discloses an auxiliary clutter sample screening method based on sub-aperture smoothing, which adopts the ultra-low side lobe sub-aperture sliding window method to greatly improve the signal-to-noise ratio of the side lobe area, and combines the method of fitting variance deviation to extract the target large signal Energy, and be eliminated, thereby improving the purity of the initial clutter covariance matrix; at the same time, combined with the sub-aperture smoothing method can significantly improve the output signal-to-noise ratio of small targets, combined with GIP and other algorithms to eliminate clutter samples containing small targets, thereby Improving the output signal-to-noise ratio of weakly discrete detection points containing such targets as micro-motion devices provides the possibility for subsequent target recognition based on detection output. It overcomes the problem that the existing non-uniform clutter sample screening method faces the problem that the initial covariance matrix contains the target signal and cannot eliminate the target information, which can greatly reduce the system operation complexity and improve the system application efficiency.

The present invention relates to a dense reconstruction method of unmanned aerial vehicle scenes based on VI-SLAM and depth estimation. External parameters and IMU external parameters are calibrated; (2) use the UAV monocular camera and IMU to collect the image sequence and IMU information of the UAV scene; (3) use VI‑SLAM to process the images and Process the IMU information to obtain the camera pose with scale information; (4) Input the monocular image information as the original view into the viewpoint generation network to obtain the right view, and then input the original view and the right view into the depth estimation network to obtain the depth of the image (5) Combine the camera pose obtained in step (3) with the depth map in step (4) to obtain a local point cloud; (6) After point cloud optimization and registration, combine the SLAM tracking trajectory with the local point cloud Cloud fusion to obtain a dense point cloud model of the UAV scene.

The invention relates to the technical field of purification of high-purity quartz sand and discloses a process method for removing a gas-liquid inclusion in the high-purity quartz sand. The process method comprises the following step: performing microwave radiation treatment on the high-purity quartz sand for 1 to 10h, wherein the microwave power is 1,000 to 4,000w, and the one-time treatment amount of the high-purity quartz sand is 100 to 600g. The process method for removing a gas-liquid inclusion in the high-purity quartz sand is simple and easy to operate, environment-friendly, safe, and good in removal effect; exhausted natural crystal resources can be possibly replaced by common quartz ores, and the high-purity quartz sand in which the content of the gas-liquid inclusion is over an order of magnitude lower than that of the gas-liquid inclusion in the natural crystal can also be produced; the method makes a great contribution to updating and upgrading of raw materials of quartz glass.

The invention discloses an electronic mosquito repellent device, which comprises a housing, a mosquito sound positioning component installed in the housing, a low-frequency modulation ultrasonic / low-frequency emission repelling component, a suction and killing mosquito component, and a component control module; the mosquito sound positioning component includes Microphones, operational amplifier modules, AD modules, mosquito sound positioning components, low-frequency modulation ultrasonic / low-frequency emission repelling components, mosquito suction and killing components are connected in sequence to the component control module, and the component control module receives the information transmitted by the mosquito sound positioning component and calculates According to the information of the sound source, the low-frequency modulation ultrasonic / low-frequency emission repelling component or the mosquito-absorbing component is driven to work; when the low-frequency modulation ultrasonic / low-frequency emission repelling component is working, the low-frequency modulation ultrasonic / low-frequency emission repelling component emits mosquito sound Low-frequency modulated ultrasonic signal or low-frequency signal of the same frequency, in-phase or anti-phase as the source. The invention responds to mosquitoes of different types, genders and regions and prompts whether they exist, and automatically, intelligently, efficiently and quickly drives away or kills mosquitoes.

The invention relates to a device for efficiently removing cut tobacco stems, comprising a first conveying line, a cut stem agglomeration loosening device, a cut stem flattening mechanism, an air selection channel, an electrostatic fine separation mechanism and a second conveying line. The silk agglomeration loosening device is arranged on the upper part of the feed end of the first conveying line, and is used for loosening the cut stems entering into it. Its upper end opening is located below the discharge end of the first conveying line, its side away from the first conveying line is provided with an air-selecting material port, and its side close to the first conveying line is provided with a corresponding air-selecting material port. The assembly port is provided with a blowing device in the assembly hole, the electrostatic fine separation mechanism is arranged under the side of the air separation material port away from the air separation channel, and the feeding end of the second conveyor line is placed at the outlet of the electrostatic fine separation mechanism. below the feed opening. Advantages: The structure design is reasonable, and the removal effect of the stalk sign is ideal.

The invention provides a condenser pipe burr removing-refrigerant fluid adding device, comprising a condenser pipe burr removing device and a refrigerant fluid adding device. A condenser pipe is fixed at a clamping component, a motor controls a lead screw to rotate to drive a nut block to move, and the nut block drives a moving plate such that the burr removing device moves up and down; and the burr removing device drives a burr removing brush to rotate by rotation of a removing motor, such that the condenser pipe is subjected to the work of burr removing. The condenser pipe burr removing-refrigerant fluid adding device is simple in structure and reasonable in design, manpower source is greatly saved by adopting an automated technology, and the burr removing effect for the condenser pipe is ideal. Based on prior art, the condenser pipe burr removing-refrigerant fluid adding device is simple in structure and smart in design, and has a good refrigerant fluid adding effect particularly for a refrigerating device tank body with smaller size; and the device avoids the defects in an adding process to a large extent, and meanwhile, the device is very good in stability.

Disclosed is a conveying and detecting device. The conveying and detecting device comprises a power machine frame assembly. A main rotating tower is arranged in the middle of the power machine frame assembly in a rotating mode. A vertical feeding assembly is arranged on one side of the power machine frame assembly and matched with a threaded rod assembly, the threaded rod assembly is matched with a bottle inlet star wheel assembly, and the bottle inlet star wheel assembly is matched with the main rotating tower. A platform assembly is arranged on the top of the power machine frame assembly, and the bottle inlet star wheel assembly, a bottom crack removal star wheel assembly, a bottle outlet star wheel assembly, a foreign matter and liquid level disqualification removal star wheel assembly, an unqualified bottle body and cap removal star wheel assembly and a second bottle outlet star wheel assembly are all arranged on the platform assembly. The conveying and detecting device has a shooting detection function, can remove bottles with cracks and foreign matter, is good in removal effect, ideal in detection effect and reliable to convey and can conveniently feed, and is quite suitable for conveying and detecting bottled products.