34results about How to "Avoid Human Measurement Errors" patented technology

The invention provides a material structure quantitative analysis method based on a transmission electron microscope HAADF image. The method is characterized by obtaining the coordinate position of each atom lattice in a transmission electron microscope high-resolution image through the image processing technique to obtain integral intensity of each atom and neighbourhood normalized intensity; and by fully combining the relation between HAADF imaging principle and intensity information, obtaining some quantitative information on the basis of qualitative research of the HAADF image. Through the data of the atomic lattice coordinates and normalized intensity and the like, a plurality of quantitative structure information can be obtained through analysis. In the method, the determination of the atom lattice coordinates and integral intensity is scientific and reasonable; application of the neighbourhood normalized intensity avoids the influence due to the case that the material (especially the polycrystal nanometer material) has larger range of structure fluctuation and defects; and the structure information can be summarized and analyzed quickly, and enormous workloads and errors due to manual measurement are prevented. The method has the advantages of accurate result, wide application range and high operability and the like.

The invention discloses a mine microseism wave detector installed in a deep hole. The mine microseism wave detector installed in the deep hole comprises a wave detector sensing unit, a vibration testing unit, a variable gain and controllable filtering module, an azimuthal angle and dip angle measurement module and a core control module with data collection and communication functions. The wave detector can achieve automatic recording of related information, lowers the complexity of artificial operation, avoids introducing more artificial measurement errors, achieves self-measurement of the azimuthal angle and the dip angle, reduces the amount of the related information recorded manually, lightens the workload of manual recording and the probability of wrong recording, and guarantees normal work. A work state self-detection function of the wave detector is added, maintenance difficulty and complexity are lowered, the utilization rate is improved, variable gains and controllable filtering are increased, the grain range and the filtering frequency band are adjustable, the signal-to-noise ratio and the anti-attenuation capacity of a single source are improved, and the wave detector sensing unit is favorable for improving the signal-to-noise ratio of the wave detector array.

The invention presents a method for acquiring loss compensation data by calling S2P document in a noise coefficient analyzer, which includes steps of, step one, loading a S2P document originated from a network analyzer, and analyzing the S2P format document data; step two, extracting effective parameter in S2P data, and calculating the loss compensation value in the noise coefficient analyzer; step three, building up a new frequency-loss value list for modifying the system loss in the noise coefficient measurement; step four, storing the LOS format loss compensation document, and generating the LOS format document with the same name as the S2P document; or naming the file by the user in LOS format. The method is simple to operate; the whole algorithm can be embedded in host machine software of the noise coefficient analyzer, and can be automatically completed through one-button operation of the menu or a programming method at the outer part of an instrument; the method provides a new rapid and effective input way for the building of the loss compensation table in the noise coefficient measurement.

The invention discloses a method and device for constructing a plane graph based on a UWB technology, and relates to the technical field of computers. A specific embodiment of the method comprises thesteps of obtaining device information and coordinate information of a UWB positioning device installed in a target building; Generating a sketch of the target building based on a starting sequence principle and/or a distance proximity principle according to the equipment information and the coordinate information; And optimizing the sketch by using the historical map corresponding to the target building to generate a planar graph of the target building. According to the implementation mode, the planar graph can be rapidly constructed based on the UWB technology, manual measurement errors areavoided, the measurement cost is reduced, and the user experience is improved.

The invention relates to a device suitable for detecting and controlling the density and the viscosity of a coating for casting, in particular to a device for measuring the density and the viscosity of coating for casting. The device is characterized by comprising a measuring device, a washing device and a control device connected with the measuring device and the washing device. The device has the advantages that the structure is special, a viscosity value and a density value can be monitored in real time, the measurement accuracy is ensured, the use and the operation are convenient and simple, and the production efficiency is greatly improved.

The embodiment of the invention discloses an image distance measurement method and device, distance measurement equipment and a readable storage medium. The method comprises the following steps of: constructing a three-dimensional coordinate system by using a depth sensor; according to each pixel point on the depth sensor and the focal length of a lens corresponding to the depth sensor, determining each corresponding point cloud coordinate so as to determine a fitting plane by using the point cloud coordinates; according to the relative positions of a two-dimensional sensor and the depth sensor, determining a first position point and a second position point of a two-dimensional picture on the two-dimensional sensor and a first point mapping coordinate, a second mapping coordinate, a first center mapping coordinate and a first focus mapping coordinate corresponding to a first center and a first focus of a lens corresponding to the two-dimensional sensor in a three-dimensional coordinate system; and determining the actual distance between the first position point and the second position point on the two-dimensional picture according to the first point mapping coordinate, the second mapping coordinate, the first center mapping coordinate and the first focus mapping coordinate. According to the technical scheme, errors caused by manual measurement can be effectively avoided.

The invention discloses a high-voltage power transmission cable earth current automatic detection device. The device comprises a sampler (13) and a receiver (16). The sampler (13) comprises an upper shell (2), a middle shell (3) and a lower shell (1). A PCB panel (4) is arranged on the upper shell (2). A first induction coil (10) is arranged in a first chamber (9) of the left part (21) of the middle shell. A second induction coil (12) is arranged in a second chamber (11) of the right part (22) of the middle shell. The first induction coil (10) and the second induction coil (12) are connected with a control circuit of the PCB panel (4). A supporting bar (7) is arranged between two bulges (6) on the left part (21) of the middle shell and a supporting bar (7) is arranged between two bulges (6) on the right part (22) of the middle shell. The two supporting bars (7) are connected by a spring (8). The device is simple in structure and convenient for installation, has strong environmental endurance, is low in safe risk, and can do monitoring in real time.

The invention discloses a knife handle type ultrasonic thickness measuring device and method based on wireless communication, and belongs to the technical field of ultrasonic thickness measurement. According to the device, an ultrasonic sensor, a wireless communication unit, an excitation/receiving unit, a power supply and other modules are organically integrated with a cutter handle structure and can be conveniently integrated on a conventional numerical control machine tool; in the ultrasonic thickness measurement process, the industrial personal computer transmits an ultrasonic excitation signal to the ultrasonic device in a wireless communication mode and completes automatic receiving of an ultrasonic echo signal, interference of a signal cable on ultrasonic scanning motion in a conventional mode of wired communication is effectively avoided, and reliable guarantee is provided for complex feature multi-axis linkage ultrasonic on-machine thickness measurement. And the ultrasonic echo signal is subjected to compression processing and wavelet filtering processing, so that the quality of the ultrasonic echo signal is effectively ensured. The defects of an ultrasonic thickness measuring device and method based on wired communication are overcome, and the ultrasonic on-machine automatic thickness measuring capacity and efficiency are improved.

The invention discloses a multilayered workpiece machining positioning mechanism of an edge milling machine, which comprises a piston type actuating mechanism, a saddle, guide column guiding sleeves, a connecting plate and positioning blocks. The piston type actuating mechanism is fixedly connected with the edge milling machine, the saddle is vertically and fixedly connected with one end of a cylinder, the connecting plate is parallel to the saddle and is connected with a piston rod of the piston type actuating mechanism, the positioning blocks are connected with the connecting plate, and the guide column guiding sleeves are connected between the saddle and the connecting plate. The multilayered workpiece machining positioning mechanism has the advantages that the multilayered workpiece machining positioning mechanism is reliable in operation, labor intensity of workers is reduced, labor efficiency is improved, the quality of products is guaranteed, and the like.

The invention provides a calibration method, device and system for a powder spreading device. The method is applied to a control system. The control system is connected with a first movement mechanism arranged in a powder spreading device in an equipment forming area, a micro-motion mechanism arranged in an adjusting hole of the first movement mechanism, a second movement mechanism arranged below the powder spreading device and corresponding to a reference plane, and a pressure sensor arranged on a guide rail on the reference plane. The powder spreading device further comprises a scraper strip embedded and fixed in the first movement mechanism; the first movement mechanism drives the scraper strip to do reciprocating motion in the equipment forming area in the powder laying direction; a plurality of adjusting holes are formed in the first movement mechanism; a micro-motion mechanism is arranged in each adjusting hole, and a movable pressing block is arranged below each micro-motion mechanism; the inching mechanism adjusts the embedding height of the scraper strip in the first movement mechanism by applying pressure to the movable pressing block. Calibration based on the structure can improve the calibration precision of the powder spreading device.

The invention relates to a carded cashmere length detection method and device based on pixel calculation. The carded cashmere length detection method based on pixel calculation comprises the steps ofacquiring an original image of a carded cashmere hand layout drawing; preprocessing an original image; performing binarization processing on a preprocessed image to obtain a binary image; carrying outsecondary opening operation processing on the binary image; and calculating the average length of the carded cashmere according to the image obtained after secondary opening operation processing. Onthe basis of a carding cashmere binary image, calculation of the average length of carding cashmere is completed through calculation of pixel points. The invention has the advantages that a small number of noisy points are allowed to exist in the binarized image, and the influence on the final measurement result is small; besides, manual point tracing, drawing and calculation are avoided, so thatmanual measurement errors are avoided, and the method is high in detection speed, small in error and high in efficiency.

The invention discloses a silicon semiconductor solar cell parameter measuring instrument. An A/D front-end circuit made of LM358 is used for controlling an input signal to be within a detection range of an A/D module; a programmable resistor manufactured by a relay module is used as a load of an A/D front-end circuit, and parameters are accurately measured through continuous linear change; an LCD screen displays the parameters of the solar cell and the working mode of the single-chip microcomputer is controlled by a screen touching mode. Measurement of voltage and current is completed in an STM32F407 chip, the output power of the battery under different load conditions is calculated in real time, a current-voltage curve and a power-voltage curve are drawn, and a fill factor is calculated while the maximum power point is obtained. The measuring instrument utilizes the modern electronic technology and the advanced single-chip microcomputer technology to realize the intelligent calculation of the output power of the solar cell and the automatic search of the maximum power point, and has the advantages of high measurement precision, fast speed measurement, visual result, low cost, high experiment efficiency and the like.