47results about How to "Increase positioning resolution" patented technology

A product has a surface provided with a first coding pattern and a second coding pattern. The coding patterns may include symbols each of which represents at least two different values. Each symbol in the first coding pattern may be defined by one raster point and at least one marking, the raster point being included in a first raster, which extends over the surface. Each symbol in the second coding pattern may also be defined by one raster point and at least one marking, the raster point being included in a second raster. This second raster may be displaced in relation to the first raster and may have a different spatial scale than the first raster. Each symbol in the first and the second pattern may have a value which, for example, can be indicated by the location of the marking belonging to the symbol in relation to a raster point in the first and second raster, respectively.

In a DOI radiation detector, scintillation crystals are arranged in three dimensions on a light receiving surface of a light receiving element, and a response of a crystal having detected a radiation ray can be identified on the light receiving surface. Thereby, a position at which the radiation ray is detected is determined in three dimensions. In this DOI radiation detector, regular triangular prism scintillation crystals are used, and response positions of the respective crystals are shifted for each set. This allows crystal identification without loss even with a structure such as a three-layer or six-layer structure hard to achieve by a quadrangular prism scintillation crystal.

A tomography device, particularly for single photon emission computed tomography (SPECT), comprises a multi-pinhole collimator and a detector for detecting gamma quanta or photons that penetrate the multi-pinhole collimator. In a tomographic method using the device, the distance between the object and the multi-pinhole collimator is selected to be smaller than the distance between the multi-pinhole collimator and the surface of the detector.

The invention relates to a microseism interference imaging method. The method includes the steps of dispersing an underground model through meshes of a certain size, arranging n detectors in the underground model, establishing an underground speed model, calculating the travel time between each mesh point and the preliminary wave of each detector according to the speed model, obtaining first record information of a main event of a microseism in the n detectors and second record information of a target event in the n detectors, conducting mutual correlation calculation on the main event and the target event of the microseism according to the first record information and the second record information, obtaining an envelope and a mutual correlation envelope gather, setting different trigger moment values at each mesh point according to the specific time step, conducting time-window-added interference imaging on the mutual correlation gather, conducting section processing on a processed image, obtaining the maximum values in different section images, comparing the maximum values of different section images, and obtaining the target maximum value.

The invention discloses a transmission line and network fault positioning method based on transfer function correlation of electromagnetic time reversal, and the method comprises the steps: 1) settinga single observation point at any terminal in a transmission line and a network, measuring and recording a fault high-frequency transient signal in a limited duration, and obtaining a measurement signal; 2) establishing a transmission line simulation model in the step 1), and obtaining fault transient signals generated at different positions through simulation, namely obtaining simulation signals; 3) carrying out time synchronization operation at the starting moment on the simulation signal obtained in the step 2) and the measurement signal obtained in the step 1) by utilizing a signal synchronization method, and eliminating deviation in the sampling process; 4) filtering the simulation signal and the measurement signal by using a signal filtering method, and extracting transfer functionsin the simulation signal and the measurement signal; 5) calculating a correlation coefficient of a transfer function between the simulation signal and the measurement signal, and judging a fault position by searching a maximum value of the correlation coefficient. The method can realize online monitoring based on a single observation point so as to cover the whole transmission line network, and has a relatively high practical value in power transmission line fault positioning.

A method for decorating an uneven surface of a dimensionally stable object is disclosed. According to the method, the object to be decorated and a digital, contactless printing head are moved in relation to one another during the printing operation and the printing head is controlled by a control unit in order to dispense ink. The method according to the invention comprises the following steps: a control program is created to control the printing head in accordance with the height profile of the uneven surface to be decorated of the object; the position of the surface to be decorated is detected in relation to the printing head; and the digital printing head is controlled using the program that has been created. The invention also relates to a device for carrying out the method.

An imaging system configured to provide improved position resolution is disclosed. The imaging system includes detector acquisition circuitry that is configured to acquire a plurality of rise-times and a plurality of amplitudes from a detector assembly that includes an array of one or more detector elements. The imaging system also includes position determining circuitry that is configured to determine a plurality of respective impact positions on each of the detector elements. The plurality of impact positions is based on at least the plurality of rise-times and the plurality of the amplitudes acquired by the detector acquisition circuitry.

The invention discloses a precision-location stepping motor for a micro-stepping instrument, which comprises a shell upper cover (1), a shell lower cover (2), a permanent magnet rotor (3), a primary transmission gear set driven wheel (5), a secondary transmission gear set driving wheel (6), a primary transmission gear set driven wheel rotary shaft (7), a secondary transmission gear set driven wheel (8), a three-level transmission gear set driving wheel (9), a three-level transmission gear set driven wheel (11), a pointer drive shaft (12), an excitation winding coil XA (13), an excitation winding coil XB (14), a coil pin A (15), a coil pin B (16), a coil pin C (17), coil pin D (18), a stator iron core body (19) and the like. The reduction ratio of a three-level reduction gear system is 720:1, and the minimum location resolution is 0.0833 degrees; and the invention realizes micro-stepping rotation on the aspect of structure, does not need an extra drive circuit when in use and is a stepping motor for the instrument ,which has precision location and can enable a point to smoothly move.

The invention relates to a frictionless inertia step scanner, which is characterized in that an expander pulls a sheet to a base, one end of a XYZ piezoelectric scanning tube is fixed on the base while another end supports the sheet and generates pressure. When in use, the invention adds a Z extension signal and a slow XY signal, quickly evacuates the two signals to process the XY evacuation in the Z retraction and use the Z-axis inertia force of the sheet to eliminate the XY-axis friction force, repeats and generates XY-axis step without friction interference. The invention has high large-scale step positioning precision and small-scale scanning and positioning functions, which leads in two independent Z-axis positioning devices to adjust the distance between two probes and sample, uses frictionless inertia step scanning device to accurately feed the test point of the first probe on the sample into the scanning range of the second probe, to realize one-point scanning dual-probe microscope, with complete, reliable and effective data.

A spacecraft payload element is rotated by a mechanism about virtual pivot point (VPP) substantially distant from the mechanism. The mechanism couples the payload element to a spacecraft main body structure, and has a four-bar linkage configured to rotate the payload element about a virtual pivot point (VPP). The VPP may be proximate to the focus or center of gravity (cg) of the payload element. Rotation of the payload element about the VPP may be controlled by linear or rotary actuators which drive the four-bar linkage. The four-bar linkage may be configured to provide a mechanical advantage to the actuator.

A method for suppressing electromagnetic background radiation in the image according to a precharacterization, a device for carrying out the method according to a precharacterization, a measuring instrument, and a use of the device for identifying a laser signal as a mark for subsequent measuring processes as well as for identifying a source of a laser signal.

This paper presents various methods that were developed to increase the position resolution and granularity of double sided segmented semiconductor detectors. These developments will increase the imaging resolution capability of such detectors, either used as Compton cameras, or as position sensitive radiation detectors in imagers such as SPECT, PET, coded apertures, multi-pinhole imagers, or other spatial or temporal modulated imagers.

A pixel array is composed of a plurality of pixel structures in array arrangement, and each pixel structure at least comprises a sub-pixel and an address pixel, wherein the addressing pixel is configured at one side of the sub-pixel and can generate electromagnetic radiation wave with invisible wavelength. The addressing pixel in the pixel array is properly arranged so that the pixel array can be divided into a plurality of groups of digital codes; therefore, the pixel array can be applied to constructing a non-touch panel input device by detecting a digital code combination composed of electromagnetic radiation wave generated by the addressing pixel.

An electron microscope is provided which can measure, with high sensitivity and high positional resolution, an amount of deflection of an electron beam occurring when it is transmitted through a sample. The electron microscope (100) is adapted to measure the amount of deflection of the electron beam (EB) when it is transmitted through the sample (S), and has an electron beam source (10) producing the electron beam (EB), an illumination lens system for focusing the electron beam (EB) onto the sample (S), an aperture (30) having an electron beam blocking portion (32) for providing a shield between a central portion (EB1) and an outer peripheral portion (EB2) of the cross section of the beam (EB) impinging on the sample (S), and a segmented detector (20) having a detection surface (22) for detecting the electron beam (EB) transmitted through the sample (S). The detection surface (22) is divided into a plurality of detector segments (D1-D4).

The present invention discloses an optical encoder including a light emitting module, a positioning device and a light separating structure. The light emitting module emits a light beam illuminating an illumination area of the positioning device. The positioning device includes light penetrating areas arranged in a dislocation manner. The light penetrating areas sequentially move into the illumination area. The light separating structure is disposed in the path of the light beam. The positioning device is disposed between the light emitting module and the light separating structure. When part of the light beam penetrates one of these light penetrating areas and is transmitted to the light separating structure, the light separating structure transmits the light to a sensing area and forms at least one first positioning optical pattern. The distance between two first positioning optical patterns formed by two adjacent light penetrating areas is greater than the pitch between the two adjacent light penetrating areas.

The invention discloses an equipment positioning method applied to a display screen or a projection screen. The equipment positioning method comprises the steps that a digital watermark image block isembedded into an image on a display screen, positioning equipment (e.g., a handwriting pen) with a camera is used to snapshoot the image block containing a digital watermark, watermark detection processing is performed on the image, therefore, the position of the handwriting pen is determined, a motion trail of the positioning equipment can be obtained through multiple positioning points, and then a handwriting input function is achieved. The method has the advantages that positioning resolution is high, the influence on picture quality is small, the handwriting input function can be directlyachieved on the display screen in a large size without a touch medium, realization operability is high, cost is low compared with a common touch screen, and high economic value is obtained.

The pixel array consists of several pixel structures in array arrangement. Each of the pixel structures includes at least one sub-pixel and pixel shade on one side of the sub-pixel, and the pixel shade can generate electromagnetic wave in invisible light wavelength. Proper configuration of the pixel shades in pixel array can separate the pixel array into several digital codes, so that detecting the digital code combination constituted by the electromagnetic wave the pixel shades produce can apply the pixel array in constituting non-contact panel input device.