40results about How to "Large depth range" patented technology

A digital imaging system being configured for synthesizing an image of a plenoptic optical device, comprises a photosensor array comprising a plurality of photosensors arranged in a predetermined image plane, and a microlens array comprising a plurality of microlenses arranged for directing light from an object to the photosensor array, wherein the photosensor array and the microlens array are arranged with a predetermined distance, the microlenses have different focal lengths varying over the microlens array, and the image plane of the photosensor array is arranged such that the distance between the photosensor array and the microlens array does not equal the microlenses' focal lengths. Furthermore, a plenoptic optical device including the digital imaging system and a method for processing image data collected with the digital imaging system are described.

The invention belongs to the technical field of ocean engineering and relates to a free falling type ball-shaped penetrometer with a propeller. The free falling type ball-shaped penetrometer with thepropeller does not need any other loading device during measurement and can penetrate into soil of seabed by kinetic energy and gravitational potential energy for measurement, thereby being simple inoperation process. The main measurement unit of the free falling type ball-shaped penetrometer with the propeller is a ball-shaped penetrometer body at the front end, which mainly bears end bearing resistance of soil, dragging resistance and pressure of covering soil during a power penetration process; data collected by an acceleration sensor and a force sensor can be applied to inverting relevantparameters of soil body such as soil body strength and rate effect parameters; the added propeller can effectively the penetrating depth of the free falling type ball-shaped penetrometer and increasethe measurable depth range and meanwhile enhance the directional stability of the free falling type ball-shaped penetrometer during falling and avoid rotation of the free falling type ball-shaped penetrometer. By adding the force sensor and combining the measured value of the acceleration sensor, the free falling type ball-shaped penetrometer can further improve the measurement precision.

The invention relates to a frequency domain optical coherence chromatography imaging method and a system thereof with adjustable detection depth range and depth resolution ratio; a variable cycle grating is used for frequency domain optical coherence chromatography imaging, and the light spectrum detection depth and the light spectrum detection resolution ratio of a frequency domain interference signal are changed by adjusting the grating period and the lateral position of the detector, so as to realize the frequency domain optical coherence chromatography imaging with adjustable frequency domain optical coherence chromatography imaging. The invention can be matched with the usage of a wide spectral width light source, the problem that the pixel array length of the detector is limited when the spectral width is wider, and different imaging requirements of uses for obtaining large detection depth range or/and deeper depth resolution ratio can be met.

The present invention discloses a three-dimensional display panel, and a method and device for display of a three-dimensional display panel. The three-dimensional display panel comprises a first display panel, a second display panel located at the light exit side of the first display panel and a microlens array located at the light exit side of the second display panel; a distance between the first display panel and the microlens array is larger than the focal length of the microlens array; a distance between the second display panel and the microlens array is smaller than the focal length of the microlens array; the microlens array is configured to perform virtual image processing of the display image of the second display panel and perform real image processing of the display image of the first display panel penetrating the second display panel to overlap the virtual image and the real image to realize three-dimensional display. The real image corresponding to the first display panel and the virtual image corresponding to the second display panel are respectively located at two sides of the microlens array so as to greatly increase the depth range of a three-dimensional image; and moreover, a final three-dimensional image is formed through imaging of pixels of two display panels so as to improve the resolution of the three-dimensional image.

An autostereoscopic display uses a beam control system and a pixelated spatial light modulator. Different display modes are provided for the displayed image as a whole or for image portions. These different modes provide different relationships between angular view resolution, spatial resolution and temporal resolution. The different modes make use of different amounts of beam spread produced by the beam control system.

The invention discloses an error compensation method for a long-distance underground pipeline positioning system and an implementation system. The method includes the following steps that 1, a three-dimensional ground coordinate system is established; 2, according to pre-mastered pipeline information, a coordinate correcting circuit of the exterior of a pipeline is arranged, the perpendicular depth of the center, at a point, of the pipeline is measured, three-dimensional coordinates of the coordinate correcting point and the head and tail ends of the pipeline are then determined, and measureddata is written into a data processor in advance; 3, a positioning device is fixed to a pipeline robot, and the pipeline robot is positioned in combination with altitude angle data of an MEMS inertialmeasurement module and data of a mileage collecting module; 4, when the pipeline robot advances and induction current is generated for the k time (k=1, 2, 3......) by a receiving coil and reachesthe maximum value, a k coordinate correcting value is written into a data storage module; 5, after pipeline positioning is completed, an upper computer reads, corrects and conducts three-dimensional display on data in the storage module. The error compensation method is large in application range and high in calculation precision.

The invention discloses a sampler for water quality detection. The sampler designed by the invention includes a bracket, a sample storage box, a sampling box and a booster cylinder. The bracket is composed of a vertical part and a triangular part, and the triangular part is provided with There are two pulleys to connect the sampling box to control the sampling water depth of the sampling box. The sampling box includes a second housing and a telescopic device, and the telescopic device is provided with a limit block, a baffle and a plurality of springs The opening and closing of the sampling box is controlled by the pulling of the small pulley and the pushing force of the multiple springs so that the baffle is close to the side where the water inlet is located and is slidably connected with it. The sample storage box is located at the Just below the triangular part, single sample and mixed sample can be stored at the same time. The sampler is easy to use, simple and easy to operate, and has high practicability.

The invention discloses an implementation system of an error compensation method for a long-distance underground pipeline positioning system. The implementation system comprises a pipeline positioningdevice, an engineering distance measurement instrument and an upper computer; the pipeline positioning device is fixed to a pipeline robot and used for detecting the altitude angle and mileage data of the pipeline robot, and the position of the pipeline robot in a pipeline to be measured is worked out based on an inertial navigation principle; the pipeline positioning device travels in the pipeline along with the pipeline robot, and when an electromagnetic wave signal is received and reaches the highest strength, coordinate data for correcting a current position is triggered; the pipeline positioning device stores all pipeline coordinate data into a storage module; the engineering distance measurement instrument is set to be used for detecting the position coordinates of the head and tailends of the pipeline to be measured and plane coordinates of a pipeline exterior coordinate correcting point; the upper computer is set to be used for reading the coordinate data in the storage module, correcting inertial navigation positioning data, and finally conducting three-dimensional display on corrected pipeline coordinate data. The implementation system is large in application range andhigh in calculation precision.

The invention discloses a novel drilling machine which comprises a fixed machine body and a machine head which conducts relative back and forth movement perpendicular to the bottom of the machine body. A main shaft used for installing a cutting tool is arranged on the machine head and is driven to revolve by a motor installed inside the machine head through a gear transmission mechanism, the machine head is installed on the machine body through a guide rail mechanism, the guide rail mechanism comprises a sliding plate, guide rails and clamping blocks matched with the sliding plate, the sliding plate and the guide rails are matched, the guide rails are vertically and fixedly installed on the machine body, the sliding plate is provided with a first fixing part and a second fixing part in the vertical direction, the machine head is installed on the sliding plate through the matching of the clamping blocks and the first fixing part, and the sliding plate is installed on the machine body in a sliding mode through the matching of the second fixing part and the guide rails. According to the novel drilling machine, the installing height of the machine head relative to the guide rail mechanism can be adjusted according to the depth of drill holes, and thus the depth range of the drill holes of the drilling machine is enlarged.

The invention relates to a method for improving dryness of deep well thickened oil well bottom steam through electric heating. The method comprises the steps that (1) after being separated through a steam-liquid separation device, steam generated by a ground boiler is conveyed to a well mouth of an injection well through a pipeline; (2) the tail end of a production casing pipe in a shaft of the injection well is connected with an oil layer screen pipe through a suspender, and a heat insulation oil pipe is mounted in the production sleeve pipe; (3) a continuous oil pipe is mounted in a steam injection oil pipe, a conveying cable is arranged in the continuous oil pipe, and the front end of the conveying cable is connected with a heating resistor; and (4) steam of the well mouth is injected into the shaft through the steam injection oil pipe, condensation water gathered around the well bottom is secondarily heated by adjusting the input electric power of the heating resistor, the condensation water is evaporated into saturated steam, and the dryness of steam injected into the well bottom is improved. According to the method, the principle is reliable, operation is simple and convenient, the exploitation efficiency of deep well thickened oil SAGD and steam flooding is greatly improved, and wide market prospects are achieved.

The invention relates to the technical field of electromagnetic nondestructive testing for a seal weld of a control rod driving mechanism of a nuclear power station, and specifically discloses a DC (direct current) magnetization probe based on a transceiving type coil suitable for an omega weld. The probe comprises a DC magnetic saturation unit group, a spool-type Bobbin exciting coil and a densely covered detection sensor group, wherein the DC magnetic saturation unit group and the spool-type Bobbin exciting coil jointly form an 'H'-shaped frame structure; a left vertical structure wound coil and a right vertical structure wound coil form the DC magnetic saturation unit group; a Bobbin exciting coil is wound on a middle axial framework, so as to form the spool-type Bobbin exciting coil; the DC magnetic saturation unit group and the spool-type Bobbin exciting coil integrally cross above the weld in an omega weld detection zone; the densely covered detection sensor group comprising a plurality of point sensors is mounted on a cambered surface of the weld in the omega weld detection zone. The probe has the advantages that the detected depth range is wider, the quantitative ability is enhanced, and the defect locating capability can be improved by gluing a densely covered sensor detection unit group on the cambered surface of the weld.

The invention relates to an aquatic plant harvesting device and an application method thereof and belongs to the technical field of agricultural machinery. A support is installed at the stem positionof a boat, an extensible arm stretches, the position of a cutting device is adjusted according to required cutting depth, a power supply of the device is turned on, a motor in an intermediate shaft ofthe cutting device works to drive sweeping rods and a round blade to rotate, the sweeping rods gather aquatic plants in the rotating process and sweep the aquatic plants towards the round blade, andthe aquatic plants are cut under the effects of the sweeping rods and the round blade.

The invention relates to the field of soil detection tools, and particularly discloses a drilling device for soil detection. The drilling device consists of a main machine and a drilling tool, wherein the drilling tool comprises a drilling rod, a spiral piece is arranged on the drilling rod, and teeth are evenly distributed on the periphery of the spiral piece; the main machine is internally provided with a plurality of rotary frames, a main shaft, a transmission shaft and a driving shaft which are sequentially in transmission connection, each rotary frame is provided with a plurality of roller shafts, the roller shafts are sleeved with stirring rollers, the driving shaft is provided with a pedal, after the drilling tool is combined with the main machine, the pedal can be treaded to drive the rotary frames to rotate, when the rotary frames rotate, the stirring rollers on the rotary frames circularly stir the teeth to jointly drive the drill rod to rotate, and then the drill rod is driven to drill downwards. The drilling device for soil detection is scientific and reasonable in structure, high in utilization rate of mechanical parts, small in energy loss, flexible and convenient to use, efficient and labor-saving in operation, large in drilling depth range and high in practicability, and has wide application prospects in soil detection.

The invention discloses a deep tamping tube and a construction method thereof. The deep tamping tube comprises a protective sleeve and a plurality of sections of tamping tube bodies. A first connecting device connected with a hydraulic machine is arranged at the upper end of the protection sleeve, and the lower end of the protection sleeve is connected with a valve pile shoe. The tamping tube bodies can be disposed in the protective sleeve, and a second connecting device connected to a vibrating head is arranged at the upper end of the tamping tube bodies. Third connecting devices for the tamping tube body combination are further disposed between the tamping tube bodies. The deep tamping tube can effectively solve the base tamping problem of deep soft soil in a super soft soil foundation,and expands the depth range of dynamic compaction, the base tamping process has a good compacting effect on a soil body, the soil deformation effect is reduced, the soil body strength is improved, andthe noise impact during construction can be significantly reduced.

The application discloses a wide-band achromatic multi-focus microscopic imaging optical system, a microscope, an achromatic lens group, a multi-focus diffractive optical element, an image detector and a chromatic aberration correction device. The microscope imaging is placed on the front focal plane of the achromatic lens group, the multi-focus diffractive optical element is arranged on the relay plane of the achromatic lens group, and the image detector is arranged on the back focal plane of the achromatic lens group. The multi-focus diffractive optical element generates multiple focal points in the direction of the optical axis and arranges each image sequentially in the meridian direction, so that the image detector can image multiple object surfaces of the sample at the same time; its focal length and off-axis amount are based on the image distance interval , The optical parameters of the microscope and achromat lens group are determined. The chromatic aberration correction device is used to correct the image chromatic aberration of the non-zero diffraction order produced by the multi-focus diffractive optical element by adjusting the incident angle of the refractive optical element. The application has a simple optical path, is easy to adjust and is applicable to a wide band, can effectively reduce chromatic aberration, and improve the resolution of microscopic imaging.