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46results about How to "High data resolution" patented technology

Towed underwater geological electrical method detection system and method

PendingCN110703335APrecise control over overlapping measurement rangesHigh precisionWater resource assessmentSatellite radio beaconingGps positioning systemData acquisition
The invention discloses a towed underwater geological electrical method detection system and a method. The system includes: an underwater electrical cable, simple underwater electrodes, water pressuremeasurement and sensing units, an electrical cable floating and sinking unit, an underwater GPS positioning system, an inflator, an electrical method data collection and storage module and a data processing module. The underwater electrical cable is fixed with the electrical cable floating and sinking unit. The electrical cable floating and sinking unit is connected with the inflator. The underwater electrical cable is connected with the electrical method data collection and storage module and the data processing module in turn. The simple underwater electrodes and the water pressure measurement and sensing units are fixed on the underwater electrical cable. The underwater GPS positioning system includes responders, a shipboard transducer and a GPS. The responders are fixed at simple underwater electrodes of a front part, a middle part and a tail part on the underwater electrical cable. The responders are connected with the shipboard transducer in a wireless manner. The GPS is fixed on a tugboat. The towed underwater geoelectrical detection method and the method provided by the invention systematically solve the deficiencies and the problems still existing in current underwater geological electrical method detection, and have good application prospects.
Owner:ANHUI UNIV OF SCI & TECH

Visualizing a time-variant parameter in a biological structure

The invention relates to a system and a method for visualizing a time-variant parameter at a plurality of positions in a biological structure, wherein a visualization display is configured to display a first representation showing a first visualization parameter at a plurality of time intervals, determined in a first volume between a first and a second boundary of the structure, and to display a second representation showing first and second visualization parameters determined in the first and in a second volume extending between the first and the second boundary of the structure. By providing the user with this combination of the two representations, a higher resolution of data may be processed and meaningfully visualized for intermediate volumes between the first and the second boundary. This is based on the insight that it is desirable to view data between boundaries of a structure as well as at different positions through the structure. However, without simple means of visualization, processing a higher resolution of data is not feasible. This is especially useful when performance differences may be present between the structure at the first and the second boundary. For example, perfusion measurements within the myocardium are different for the endocardial and epicardial layers. Therefore, the relative position of the measurements relative to these layers yields valuable data in the evaluation of perfusion. This increases the information which the healthcare professional can extract from imaging data without complicating the representations required to visualize it.
Owner:KONINKLIJKE PHILIPS ELECTRONICS NV

Post-earthquake building damage detection method based on unmanned aerial vehicle video

ActiveCN111126184AImprove the lack of loss of local structural featuresEasy extractionThree-dimensional object recognitionPoint cloudUncrewed vehicle
The invention provides a post-earthquake building damage detection method based on an unmanned aerial vehicle video, and the method comprises the steps: step 1, carrying out preprocessing of collectedpost-earthquake unmanned aerial vehicle video data, and obtaining a video key frame sequence; step 2, generating building three-dimensional point cloud data by utilizing the video key frame sequence,performing building structure damage detection on the three-dimensional point cloud data by adopting a method based on point cloud structure feature analysis and deep learning feature analysis, and if the detected result is structure damage, entering step 4; if detecting that the structure is not damaged, executing the third step; step 3, obtaining a two-dimensional key frame image of a to-be-detected building, carrying out building facade damage detection by adopting a method based on deep learning feature analysis, then carrying out super-pixel segmentation on a two-dimensional key frame image of a to-be-detected building, and carrying out fusion post-processing optimization on an obtained building facade damage detection result by utilizing a super-pixel segmentation result; and 4, outputting a damage detection result of the to-be-detected building.
Owner:WUHAN UNIV

Direct-writing type silk screen plate-making equipment and use method therefor

The invention discloses direct-writing type silk screen plate-making equipment and a use method therefor. In the prior art, the problem of inconsistency between a measured focal plane and an actual focal plane caused by position offset between a displacement sensor and an exposure point in assembling exists. The invention provides the direct-writing type silk screen plate-making equipment and a focal plane control method; a mapping relation between a focal plane position of a scanning band to be scanned in a next step and a scanning platform position signal is pre-established by a Z-axis controller; and in the next step of scanning, the position of an optical lens is adjusted according to the mapping relation, so that the problem of inconsistency between a measured focal plane and an actual focal plane caused by position offset between the displacement sensor and the optical lens in assembling can be avoided. The invention also provides an exposure method through a perceptual region and a method for realizing online real-time optical uniformity compensation, so that the problems of shortening of service life of a digital micromirror device and uneven energy output distribution on the digital micromirror device are solved.
Owner:ADVANCED DIGITAL SCREEN SYST INC

Universal tester for testing fire work equipment

The present invention discloses a universal tester for testing fire work equipment. The universal tester comprises a differential input operational amplifier unit, a signal acquisition unit, an electrical isolation unit, a microprocessor control unit, a relay matrix module, a man-machine interaction module and a constant-current source unit. The differential input operational amplifier unit is sequentially and electrically connected with the signal acquisition unit, the electrical isolation unit, the microprocessor control unit and the man-machine interaction module. The relay matrix module is respectively and electrically connected with the differential input operational amplifier unit and to-be-tested fire work equipment. The man-machine interaction module is connected with a remote control terminal through a wired network or a wireless network. The universal tester is provided with a 16-bit high-precision A/D converter, thus being high in data resolution and capable of effectively improving the small-resistance measurement accuracy of fire work equipment. The universal tester is also provided with a temperature-compensated high-precision constant-current source unit and is capable of supplying a stable and reliable safety current to the to-be-tested fire work equipment.
Owner:BEIJING INST OF ELECTRONICS SYST ENG

Visualizing a time-variant parameter in a biological structure

The invention relates to a system and a method for visualizing a time-variant parameter at a plurality of positions in a biological structure, wherein a visualization display is configured to display a first representation showing a first visualization parameter at a plurality of time intervals, determined in a first volume between a first and a second boundary of the structure, and to display a second representation showing first and second visualization parameters determined in the first and in a second volume extending between the first and the second boundary of the structure. By providing the user with this combination of the two representations, a higher resolution of data may be processed and meaningfully visualized for intermediate volumes between the first and the second boundary. This is based on the insight that it is desirable to view data between boundaries of a structure as well as at different positions through the structure. However, without simple means of visualization, processing a higher resolution of data is not feasible. This is especially useful when performance differences may be present between the structure at the first and the second boundary. For example, perfusion measurements within the myocardium are different for the endocardial and epicardial layers. Therefore, the relative position of the measurements relative to these layers yields valuable data in the evaluation of perfusion. This increases the information which the healthcare professional can extract from imaging data without complicating the representations required to visualize it.
Owner:KONINK PHILIPS ELECTRONICS NV

Method for detecting corrosion of metal pipe outer wall

The invention relates to a method for detecting the corrosion of a metal pipe outer wall. The apparatus comprises a disc-shaped cover plate, a reference electrode column, an auxiliary electrode and a circular base, wherein the center position of the disc-shaped cover plate is provided with a cover plate middle hole, the outer side of the small disc of the disc-shaped cover plate is provided with threads, the reference electrode column comprises an upper part and a lower part, the upper part comprises a reference electrode wiring column, a connection column and a silver chloride wire, the lower part comprises a fastening screw pipe and a glass pipe, the connection column of the upper part is sleeved on the outer side of the glass pipe of the lower part, the silver chloride wire in the connection column extends to the bottom end of the glass pipe, the platinum sheet of the auxiliary electrode is arranged below the small disc of the disc-shaped cover plate, and an annular magnet is arranged inside the circular base and is used for adsorbing the whole apparatus on the surface of the experimental metal. According to the present invention, the operation of the method is convenient and rapid, and the damage condition, the damage type and the corrosion degree of the metal pipeline outer wall coating in the service state can be rapidly determined.
Owner:TIANJIN UNIV

Motor monitoring method and system based on symmetrical component method and multi-dimensional index fusion

The invention discloses a motor monitoring method based on a symmetrical component method and multi-dimensional index fusion. The method comprises the steps of collecting an original three-phase voltage signal and an original three-phase current signal; building a bandpass filter using a fundamental frequency as a center, and thus acquiring the filtered three-phase voltage signal and three-phase current signal; acquiring unbalance degrees of an instantaneous three-phase voltage and an instantaneous three-phase current; performing symmetrical component decomposition based on the filtered three-phase voltage signal and three-phase current signal to acquire a sequence voltage, a sequence current and a sequence impedance; and acquiring a multi-dimensional characteristic comprehensive decisionindex; comparing the multi-dimensional characteristic comprehensive decision index with a threshold, and if the multi-dimensional characteristic comprehensive decision index is less than the threshold, triggering an alarm signal. According to the method provided by the invention, based on the collected three-phase voltage and current signals, the real-time sequence voltage, sequence current and sequence impedance indexes can be improved, the higher data resolution capacity can be achieved, the alarm under the state that is more accurate than the alarm strategy based on temperature can be achieved, the sequence voltage, sequence current and sequence impedance are used as monitoring targets, the extremely high signal to noise ratio is achieved, and the alarm accuracy is high.
Owner:HANGZHOU ANMAISHENG INTELLIGENT TECH CO LTD

Online monitoring method and system for motor on the basis of instantaneous three-phase voltage and current unbalance degree

The invention discloses an online monitoring method for motor on the basis of an instantaneous three-phase voltage and current unbalance degree. The online monitoring method comprises the following steps that: collecting the three-phase voltage and the three-phase current of a three-phase alternating current motor to obtain the original three-phase voltage signal and the original three-phase current signal of the three-phase alternating current motor; establishing a band-pass filter which takes fundamental frequency as the center to carry out filtering processing on the original three-phase voltage signal and the original three-phase current signal to obtain the filtered three-phase voltage signal and three-phase current signal; independently obtaining an instantaneous three-phase voltageunbalance degree and an instantaneous three-phase current unbalance degree unbalance degree; and independently comparing the instantaneous three-phase voltage unbalance degree and the instantaneous three-phase current unbalance degree with a corresponding threshold value to obtain a comparison result, and on the basis of the comparison result, judging whether an alarm motion is triggered or not. By use of the online monitoring method, on the basis of the instantaneous three-phase voltage unbalance degree and the instantaneous three-phase current unbalance degree, a motor insulation state is evaluated in real time so as to realize online monitoring. A three-phase voltage and current signal is high in data resolving power, and a status alarm which has higher accuracy than an alarm strategy based on temperatures can be realized.
Owner:HANGZHOU ANMAISHENG INTELLIGENT TECH CO LTD

Nested matrix type reading electronic tag system capable of resisting atmospheric vibration and filtering frequency

PendingCN110619244ASelf-compensation of missing values ​​has a strong effectImproved storage integrityMemory record carrier reading problemsHybrid readersFrequency filteringSystem matrix
The invention discloses a nested matrix type reading electronic tag system capable of resisting atmospheric vibration frequency filtering. The device structurally comprises a base, the device comprises a bracket frame, an inner sealing strip frame plate, a mark plate block, an infrared scanning groove, a sliding strip armature device, a socket groove block, an overturning support and a suction cupbase. According to the invention, the infrared scanning groove is matched with the sliding strip armature device; two side end contact seats and an angle expanding sheet plate seat are in lap joint through an armature to form a three-contact interlaced wave receiving electromagnetic net. Scattered data is collected in a net-pulling manner by cooperating with the infrared scanning groove for atmospheric vibration wave frequency; then, a simple stable data electric field is formed for the wave band after the atmospheric amplitude; then, system matrix scanning input during later reading of the electronic tags is facilitated, a partition operation is formed for adjacent easy-to-deviate databases of the interval blocks, data missing and missing values can be conveniently calculated by a chip with a small transition node, the one-by-one input overlapping condition of an electronic tag system is also improved, and the data resolution and the autonomous complementing effect of the tag systemare improved.
Owner:泉州速创时代工业设计有限公司
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