62results about How to "Large sampling range" patented technology

The invention discloses a laser excitation spectrum detection probe and a spectrum detection method with the probe. The probe comprises a laser for outputting laser beams with different divergence angles in the long shaft direction and the short shaft direction, a light path converting device arranged on an output light path of the laser beams and used for changing a transmission path of incident light, a focusing collecting device for focusing beams reflected by the light path converting device to a focus containing with a sample and a coupling light-filtering device arranged between the light path converting device and a spectrograph and used for optical coupling the collected beams and then focusing the formed strip-type faculae at a slit of the spectrograph. By means of the laser excitation spectrum detection probe and the spectrum detection method with the probe, the coupling efficiency of the spectrograph can be improved, and the collecting efficiency of a system is improved; the cost of devices and the cost of instruments are reduced, and the tolerance performance of the system is improved; the power density of converging laser faculae is reduced, and heat accumulation and sample firing are prevented; the sampling range is widened, and the laser excitation spectrum detection probe is more suitable for sampling solid mixture samples and sparse samples.

The invention discloses a wave energy and solar energy driven unmanned monitoring ship for a marine environment, which comprises a ship body and an unmanned control system, wherein the ship body has a shape of rigid inflatable boat; the unmanned control system comprises a ground remote control system and a ship-loaded system which are coupled with each other through a wireless data link; the ground remote control system comprises a remote control computer, a wireless network bridge and corresponding top-layer application software; the ground remote control system is used for receiving, analyzing and displaying a ground remote control command and data; a serial port of the remote control computer is connected to the wireless network bridge; and the ship-loaded system comprises a navigationcontrol subsystem, a communication subsystem, a navigation information sensing and collecting subsystem, a wave energy and solar energy power generating and supplying subsystem and a data collecting subsystem. No diesel motor is required in the wave energy and solar energy driven unmanned monitoring ship, a wave energy generating system and a solar energy generating device of the ship are directly used for supplying power, the quality of output electric energy is stable and the electromagnetic compatibility is excellent, thereby ensuring the normal work of ship-loaded equipment under a complex marine environment.

The invention discloses a FPGA (Field Programmable Gate Array) based multi-channel data transmission synchronization delay measurement method and system and relates to the electronic measurement technical field. The FPGA based multi-channel data transmission synchronization delay measurement method comprises step 1, providing a data transmission clock and a frame synchronization signal through a clock module; step 2, sending the every time of amount of phase shift of the clock to a phase shifting module, obtaining the maximum time of phase shift and setting the times of phase shift of the clock; step 3, sending delay data to a sampling conversion module through an IO (Input and Output) delay module; step 4, sending a sampling clock to the sampling conversion module through the phase shifting module; step 5, sending sampling data which are corresponding to link labels to a processing module through the sampling conversion module; step 6, determining whether the position of a sampling point is an unstable transmission position or not through the processing module; step 7, setting the delay order of the data to increase 1 through a control module; step 8, obtaining the unstable transmission position through the processing module; step 9, determining the synchronization delay of the sampling data which are corresponding to the link labels through the processing module. The FPGA based multi-channel data transmission synchronization delay measurement method and system is used for implementing the measurement on the data synchronization delay.

The invention provides a magnetic control biopsy mechanism of a capsule endoscope, comprising a fixed base, a stator permanent magnet, a biopsy working head, a mover permanent magnet, a moving base and a protective shell, wherein the fixed base, the stator The permanent magnet, the biopsy working head, the mover permanent magnet and the moving base are all located inside the protective shell, and the fixed base is fixed on the outside of the capsule endoscope. The beneficial effects of the present invention are: the magnetically controlled biopsy mechanism provided by the present invention is externally placed on the surface of the magnetically driven capsule endoscope, has a simple structure, is easy to assemble and disassemble, does not need to change the existing structure, and increases the sampling function; the driving energy is all provided by the external magnetic field It is provided remotely without built-in batteries, reducing damage to the human body; the device can repeatedly perform sampling and biopsy operations by applying an external magnetic field multiple times to improve the success rate of sampling; the biopsy working head protrudes from the axial direction, which increases the sampling range and facilitates The camera located at the head of the capsule cooperates with the external magnetic field to better observe the sampling process.

The invention discloses a space-time classification-based dynamic background differential detection method, a system and a device. The method comprises the steps of establishing a background model corresponding to each pixel in an image through packet sampling in a time sequence, classifying pixels in the background model according to to-be-detected pixels and obtaining a rough foreground mask image; with a foreground pixel point in the rough foreground mask image as a center, classifying pixel points in a preset neighboring domain range of the central pixel point, and correcting the central pixel point to be a background pixel point or still maintaining the central pixel point as a foreground pixel point according to the number of pixel points the same type with the central pixel point within the preset neighboring domain range of the central pixel point and belonging to background pixel points. According to the invention, the packet sampling method is adopted, so that the ability ofthe dynamic background description is enhanced. Only pixel points the same type of the central pixel point are adopted to judge whether a foreground pixel point is a real foreground pixel point or not. Therefore, the accuracy of detection is improved. The method can be widely applied to the field of moving target detection.

The invention relates to the field of sample collection mechanism, specifically a sample collection mechanism for an environmental protection robot, including a rotating structure, an angle adjustment structure, a telescopic structure, a drive structure, a storage structure and a sealing structure; the end of the telescopic structure is fixed on the angle adjustment structure, and the telescopic structure is rotationally connected with the rotating structure through the angle adjustment structure, the end of the telescopic structure is provided with a storage structure for sampling sewage, and the end of the storage structure is provided with a sealing structure for sealing, and the sealing structure and The detachable connection between the storage structures makes it easy to drive the rotation of the telescopic structure through the angle adjustment structure, so that the rotation of the telescopic structure drives the storage structure to move in the water body. The storage structure is not sealed, so that it is convenient to quickly and automatically collect water samples in a certain depth range inside the storage structure, which improves the efficiency and quality of sample collection.