55results about How to "Helps to observe" patented technology

The invention discloses an image distortion correction method and a system. The method comprises following steps of: acquiring an image shot by a camera; Filling the boundary of the image; Camera calibration; Setting a plurality of correction coefficients between 0 and 1, and generating a plurality of camera correction internal parameters based on the correction coefficients; According to the camera external parameters and the camera correction internal parameters under different correction coefficients, the nonlinear distortion coordinate mapping matrix of each pixel of the original image after boundary filling is obtained, and the distortion coordinate mapping matrix is used for correction. Affine transformation is performed on the corrected image. The correction method of the inventionis fast and efficient, and can carry out distortion correction on medical endoscopic pictures in real time, and the corrected pictures are more in conformity with human eye view habit, which is helpful for doctors to read films and observe abnormal lesion parts, and improves the accuracy of doctors' diagnosis. Aiming at the visual difference of different people, the invention introduces a correction coefficient to achieve different correction effects, so as to be selected by a doctor.

The invention discloses a laryngoscope. The laryngoscope comprises a handle and a laryngoscope blade, wherein the handle and the laryngoscope blade form an L shape, a camera is arranged at the end part of the laryngoscope blade, a display which is used for displaying images photographed by the camera is arranged on the handle, a regulating mechanism which is used for regulating the depth of the laryngoscope blade in a throat is arranged between the handle and the laryngoscope blade and comprises a regulating gear and a gear rack, a regulating window and a gear rack accommodating groove are formed in the handle, the regulating gear is rotatably arranged in the regulating window, the gear rack accommodating groove communicates with the regulating window, one end of the gear rack is fixedly connected with the laryngoscope blade, the other end of the gear rack is arranged in the accommodating groove in a sliding manner, and the gear rack is engaged with the regulating gear. The laryngoscope is simple in structure, the position of the laryngoscope blade in the throat can be fine-adjusted up and down, and thus, the laryngoscope can more efficiently work at throats of patients.

The invention provides an endoscope target object size calculating method and an analysis system. The method includes the following steps of establishing the distance-pixel unit size mathematical relation model of the unit pixel size of an endoscope in different distances; collecting the distance d between the endoscope and a target object; taking an image of the target object through the endoscope, and correcting the distortion of the image; obtaining the number of pixels of the target object in the corrected image, detecting the size of the corresponding unit pixels in the distance of d through the distance-pixel unit size mathematical relation model, and calculating the size of the target object according to the calculating method of N*Sd, wherein N represents the number of the pixels of the target object, and the Sd represents the actual area size corresponding to the single pixel in the distance of d in the distance-pixel unit size mathematical relation model. The method is high in calculating speed and can rapidly and accurately calculates the size of the target object of the endoscope.

The invention provides a direct method of three-dimensional motion detection and dense structure reconstruction based on a variable optical flow and relates to a video simulation technology of a three-dimensional motion object. The method is characterized by: (1) Deducing a three-dimensional motion basic conservation assumption; (2) Designing an energy function which can detect a three-dimensional moving speed of the object; (3) Using a variational method to deduce an iterative model which detects the three-dimensional moving speed, wherein the three-dimensional motion of the target object can be directly detected through a given image sequence according to the model; (4) Reconstructing a superficial dense structure according to a three-dimensional motion parameter of the target object. The method has the following steps that: the given image sequence can be directly used to detect the three-dimensional motion of the target object and the superficial dense structure can be reconstructed; an error influence of a intermediate process on a reconstruction result can be avoided; the three-dimensional dense structure of the target motion object surface can be recovered; detail information of the object surface can be observed conveniently; calculating precision is high and robustness is good.

The invention discloses a metallographic corrosive agent for an as-extruded Mg-Li alloy and a using method of the metallographic corrosive agent. The metallographic corrosive agent is prepared by mixing 98% by mass of glacial acetic acid, 50% by mass of picric acid and 98% by mass of ethyl alcohol, and preferably the volume ratio of glacial acetic acid to picric acid to ethyl alcohol is 20:20:60, so that metallographic corrosion of the as-extruded Mg-Li alloy can be finished conveniently and fast, and the as-extruded Mg-Li alloy subjected to metallographic corrosion has the clearest and most complete metallographic structure and clear and distinguishable grain boundaries, which is conducive to observing and analyzing the metallographic structure.

The invention relates to a tree branch pruning device and solves the defect of potential safety hazard that the tree branch pruning saw in the prior art has no safety insulation measures in use. The tree branch pruning device is characterized in that an insulation rod is fixed on an electric saw; a control switch for controlling the electric saw is fixed on the lower end of the insulation rod. When operators prune tree branches by using the electric saw, the operators operate the electric saw via the insulation rod, so that the electric saw is free of harm to the operators even if the electric saw is in contact with an electrification lead wire; the safety performance of the branch pruning device in use is improved; a detection device for detecting operation state of a saw blade is also fixed on the electric saw; the detection device communicates with a controller; the controller can control an alarm at the lower end of the insulation rod; the detection device enables the alarm to give an alarm and remind the operators via the controller when the electric saw cannot move due to the failure of the saw blade after the control switch is turned on during pruning of the tree branches by the operators; the usage performance of the tree branch pruning device is optimized.

The invention discloses an air pressure type artery postoperation hemostat and relates to the technical field of medical care instruments. The hemostat comprises an upper tank and a lower ring, wherein the upper tank is divided into an inner circular cavity A and an outer ring cavity A, and the inner circular cavity A and the outer ring cavity A open downwards; a one-way air inlet valve is mounted on one side of the top face of the inner circular cavity A, and a one-way air release valve is mounted on the top face of the outer ring cavity A; a puller bolt is arranged at the center of the top face of the inner circular cavity A in a threaded connection mode, and the outer side of the puller bolt is sleeved with a telescopic sealing sleeve; the lower end of the upper tank and the upper end of the lower ring are sealed in a loose joint mode; the lower ring is divided into an inner circular cavity B and an outer ring cavity B, the inner circular cavity B and the inner circular cavity A are identical in size and are sealed in a butt joint mode, and the outer ring cavity B and the outer ring cavity A are identical in size and are sealed in a butt joint mode; a cotton pad is arranged in the inner circular cavity B and soaked with etamsylate. The air pressure type artery postoperation hemostat has the advantages that negative pressure of the outer ring cavity A enables the device to be tightly adsorbed to the body of a patient without a bandage, positive pressure of the inner circular cavity A is used for balancing blood pressure to reduce bleeding, operation is easy, and time is saved.

The invention aims to solve the problem that pavement defects are difficult to repair in the prior art. The invention discloses a road repair all-in-one machine. The road repair all-in-one machine comprises a brake wheel, a support frame, a first spiral spring, a first slider, a first guide frame, a first cleaning brush, a first rotating shaft, a nozzle, a water guide pipe, a water pump, a first motor, an inclined frame, a first gear, a second rotating shaft, a first connecting ring, a chain, a connecting frame, a containing box, a guide rod, a handle, a connecting rod, a guide frame, a guidecylinder, a second spiral spring, a sliding frame, a first rack, a second rack, a rotating disc, a second motor, a rack, fixing rods, a third motor, a pumping pump, a material guide cover, a second cleaning brush and a second slider. The road repair all-in-one machine is of an integrated structure, can clean the road surface, can fill stones into the defect parts of the road surface for repair, and is convenient to operate.

The invention discloses an indoor evaluating method for repellant effects of pest repellents. According to the method, host plant branches which are treated by the pest repellants and are used as the control are respectively placed in branch cups arranged at the two sides of an experiment pest cage, then, sufficient experiment pests are fed from a pest feeding opening, the experiment pest cage is placed into an artificial climate box suitable for experiment pests to live, and the repellant effects of the pest repellents are observed after the preset time. A middle separation plate is arranged in the middle of the experiment pest cage for diving the experiment pest cage to form a left side pest cage and a right side pest cage, a pest feeding groove is formed in the top of the middle separation plate and is respectively communicated with the left side pest cage and the right side pest cage through a test pest outlet, the pest feeding opening capable of being opened and closed is formed in the cage wall above the pest feeding groove, screen ventilation openings are respectively formed in the side walls of the left and right side pest cages, screen covers are respectively arranged on the tops of the left and right side pest cages, and the branch cups capable of being used for placing host plant branches are also arranged in the left and right pest cages.

The invention discloses a three-dimensional stereo animation photo taking device. The device comprises an upper hanging part and a lower support part, wherein the upper hanging part is used for hanging shot articles; the lower support part is used for supporting the shot article; a first dial, a hanging frame, a second dial and a lower rotating plate are installed, so that the hanging or supporting angle and direction can be freely selected; the surface and the point for photo taking can be conveniently found. The three-dimensional stereo animation photo taking device can be simultaneously applicable to the photo taking of soft articles and hard articles; when the lower rotating disc rotates, the shot article cannot easily shake or swing; during the photo taking, the precision can be improved, and the efficiency can also be improved. The photo taking device provided by the invention has the advantages that the simplicity, convenience and low price are realized; a three-dimensional stereo animation photo of the shot object can be precisely and really taken; the device is particularly suitable for the photo taking of articles difficult to be horizontally and stably placed and articles with irregular forms, such as the photo taking of human body tissue organ samples.

The invention relates to the technical field of laryngoscopes, in particular to an anaesthetic laryngoscope. The anaesthetic laryngoscope comprises a debugging handle and a laryngoscope device clampedat the top of the debugging handle, the debugging handle comprises a handle, a handle groove is formed in the top of the handle, a rotating disc is rotationally arranged in an inner cavity of the handle groove through a rotating shaft, the top of the rotating disc is fixedly connected to a lower connector, a limiting groove is formed in the top of the lower connector, an inner cavity of the limiting groove is fixedly connected to a clamping shaft, the laryngoscope device comprises an upper connector, a clamping shaft groove is formed in the side face of the upper connector, the clamping shaftgroove is matched with the clamping shaft, the top of the upper connector is fixedly connected to a laryngoscope lens, a camera is arranged on the laryngoscope lens, the outer side of the laryngoscope lens is sleeved with a transparent soft sleeve, the transparent soft sleeve is clamped to the top of the upper connector, and an inner cavity of the transparent soft sleeve penetrates through a suction pipe. The angle between the laryngoscope lens and the handle can be adjusted to facilitate observation, and the transparent soft sleeve can prevent the camera from fogging and prevent the metal laryngoscope lens from contacting with the trachea to cause discomfort.

The invention discloses a buried culvert desilting system, and belongs to the technical field of desilting equipment. The buried culvert desilting system comprises a scraper bucket and is characterized in that the buried culvert desilting system further comprises a main traction winch, an auxiliary traction winch, a main supporting frame, an auxiliary supporting frame, a main traction steel wire rope, an auxiliary traction steel wire rope, a PLC, a frequency converter and a displayer; a main proximity switch is fixed to the bottom of the main supporting frame, and an auxiliary proximity switchis fixed to the bottom of the auxiliary supporting frame; one end of the main traction steel wire rope is connected with the main traction winch, and the other end of the main traction steel wire rope is connected with the scraper bucket; one end of the auxiliary traction steel wire rope is connected with the auxiliary traction winch, and the other end of the auxiliary traction steel wire rope isconnected with the scraper bucket; and the scraper bucket is driven by the main traction winch and the auxiliary traction winch to do reciprocating motion in a culvert in the length direction of theculvert. Through the buried culvert desilting system, the desilting operation efficiency can be effectively improved, the operation process is visualized, thus, the operation situation of the interiorof the underground culvert can be monitored in real time, and deposits in the underground culvert can be advantageously removed to the greatest extent.

The invention relates to a resonance demonstration instrument and a demonstration method thereof. A sound insulation cylinder is arranged on a pedestal, a sound insulation baffle plate is arranged on the central section of the sound insulation cylinder, and a support shaft is fixedly installed on the central section of the sound insulation baffle plate. A first rotating disc and a second rotating disc are respectively installed on the two ends of the support shaft through a first bearing and a second bearing, and uniformly distributed limiting holes are arranged in the outer side surfaces of the first rotating disc and the second rotating disc. Splined holes corresponding to the limiting holes are arranged in the two end faces of the support shaft, and limiting through nails are arranged in the splined holes and limiting holes. A resonance generator is arranged on the circumference direction of the first rotating disc, and a reception port is arranged in the upper portion of the resonance generator and connected with an amplification port through a reception pipe. A resonance reception device arranged on the circumference direction of the second rotating disc and corresponding to the resonance generator is arranged on the outer side of the amplification port. Resonance phenomenon can be directly demonstrated through the resonance demonstration instrument and the demonstration method thereof, thereby facilitating observation and enhancing understanding of the phenomenon.

The invention relates to a ribonuclease protecting experiment kit. It includes kit body and many reagent containers. The many reagent containers are fixed in the kit body. The kit body includes hybridization, RNA enzyme digestion, probe dilution, and sample adding buffer solution containers. The hybridization bugger solution is the following mixture: 40mmol/L PIPES(pH6.8), 1mmol/L EDTA(pH8.0), 0.4mol/L NaCl, 1mmol/L CTAB, and deionization formamide with 80% volume ratio. The RNA enzyme digestion bugger solution is the following mixture: 0.3mol/L NaCl, 5mmol/LEDTA, 10mmol/L Tris-HCl(pH7.4) and 50mg/L glycogen. The invention has the advantages of high sensitivity, good repeatability, and low production cost. And it can be applied to non radioactivity biotin sign probe.

The invention discloses a pyramid-based scatter diagram sampling method and system. The method comprises the following steps: converting a scatter diagram of acquired sample data into a density map; constructing a data density pyramid and a visual density pyramid based on the density map; taking the top layer value of the visual density pyramid as the initial sample number allocated to the corresponding area in the sample allocation graph, calculating the sample number allocated to each area in the sample allocation graph layer by layer according to the data density pyramid and the visual density pyramid, and obtaining a final sample allocation graph; and selecting sample points based on the final sample distribution diagram to obtain a sampling result. A pyramid structure commonly used for image processing is used for scatter diagram sampling so as to solve the problem of over-drawing, and effect sampling points capable of keeping high relative density and abnormal values at the same time are selected by fusing a data density map and a visual density map.

The invention discloses a metallographic corrosive agent for an extruded magnesium-lithium alloy and a method for using the metallographic corrosive agent for the extruded magnesium-lithium alloy. The metallographic corrosive agent for the extruded magnesium-lithium alloy is prepared by mixing the following components in percentages by mass: 40 percent of hydrofluoric acid, 60 percent of citric acid and 98 percent of ethanol; moreover, the volume ratio of the hydrofluoric acid to the citric acid to the ethanol is most preferably 40: 20: 40; thus, the metallographic corrosion of the extruded magnesium-lithium alloy can be completed conveniently and quickly; moreover, the metallographic structure of the extruded magnesium-lithium alloy subjected to the metallographic corrosion is clearest and most complete; crystal boundaries are clear and discernible; and in this way, the observation and the analysis of the metallographic structure are facilitated.

The invention discloses a transformer primary and secondary coil homonymous terminal and synonym terminal recognition device. The transformer primary and secondary coil homonymous terminal and synonym terminal recognition device is characterized by comprising a 6V direct current power supply, an electromagnetic signal input circuit, a one-way controllable silicon triggering and amplitude limiting circuit and a detecting and indication circuit. Primary and secondary homonymous terminals and synonym terminals of some transformers, coupling coils or oscillating coils need to be known clearly. Sometimes, the recognition of homonymous terminals of a plurality of windings of the transformer is troublesome during the process of electric production and transformer maintenance and replacement. A dedicated instrument for detecting the homonymous terminals of the windings of the transformer does not exist in a market so that designing and manufacturing the transformer primary and secondary coil homonymous terminal and synonym terminal recognition device is quite necessary. A recognition circuit is composed by utilizing elements of one-way controllable silicon and the like so that homonymous terminals or synonym terminals of high-frequency and low-frequency transformers can be rapidly recognized, magnitude of power of the transformer does not need to be distinguished, a boosting transformer or a step-down transformer does not need to be distinguished, and detection and recognition are achieved.

The invention provides a dotted terminal identifier of a high and low frequency transformer winding. The dotted terminal identifier of the high and low frequency transformer winding is characterized by comprising a 6V direct current power supply, an electromagnetic signal input circuit, a one-way controllable silicon triggering circuit and an indicating circuit. As instruments for identifying dotted terminals of transformer coil windings are hard to find on the market, so that the dotted terminal identifier of the high and low frequency transformer winding is very necessary to design and make. According to the invention, an identifier circuit formed by elements such as controllable silicon is adopted. Through the adoption of the dotted terminal identifier provided by the invention, the dotted terminal or different terminal of the high frequency transformer and the low frequency transformer can be rapidly identified without distinguishing the powers of the transformers; and both boosting transformers and step-down transformers can be both identified. According to the invention, a problem in identifying the dotted terminal or the different terminals of primary coils and secondary coils of the low frequency transformer coils or the high frequency transformer coils can be conveniently solved; and the dotted terminal identifier is a special testing tool for the transformer, which is featured with accurate identification result and easy popularization.

The invention discloses a urine guide and storage device capable of detecting urine flow and a system. The device can meter urine in real time through a weight sensor in a urine guide and storage process and automatically release the urine according to dual signals of an induction device arranged on a urine storage bag and a processor connected with the weight sensor. The urine guide and storage device has the outstanding advantages that the urine amount can be detected in real time in the urine storage process, so that a doctor can conveniently observe the state of illness of a patient, and the workload and the burden of a nurse are also relieved. The urine guide and storage device disclosed by the invention can automatically release redundant urine according to the capacity of the urine, and the urine can be set to be discharged into a collector or directly discharged into a septic tank, so that the burden of the nurse or a family member of the patient is relieved; the urine guide and storage device is energy-saving and environment-friendly.

The invention belongs to the technical field of orthopedic examination devices, and concretely relates to an angle-adjustable arm supporting device for orthopedic examination, which comprises a base,a vertical hydraulic cylinder is arranged in the base, the vertical hydraulic cylinder controls a supporting rod to move up and down in the vertical direction, the top of the supporting rod is fixed to a supporting table through a connecting plate, a horizontal hydraulic cylinder is installed in the supporting table, the horizontal hydraulic cylinder is fixed to the sliding table through a push rod, and the sliding table is driven by the horizontal hydraulic cylinder to horizontally move along the sliding groove; a movable table is arranged above the sliding table, and two sets of shear type supports are arranged between the movable table and the sliding table. The upper spherical surface hole and the lower spherical surface hole of a ball clamping piece are matched to fix the ball body; and a supporting base is arranged on the right side of the supporting table. Compared with the prior art, the device has the following advantages that the whole device is simple, reasonable and convenient to operate, the arms of a patient can be placed at multiple angles in a relaxed and comfortable mode, observation and examination by doctors are facilitated, different use requirements can be met,and the use comfort can be effectively guaranteed.