23 results about "Detector head" patented technology

The invention discloses a lightweight human body posture estimation method based on PLES-YOLO, and belongs to the field of computer vision, and the method comprises the following steps: carrying out the feature extraction of an input image through employing an improved down-sampling module, and obtaining an initial feature map; based on the initial feature map, a multi-scale feature fusion module is adopted to carry out progressive feature enhancement, and multi-scale fusion features are obtained; based on the multi-scale fusion features, performing feature optimization by adopting a spatial pyramid pooling module combined with an attention mechanism to obtain weighted multi-scale features; and on the basis of the weighted multi-scale features, a lightweight shared convolution detection head is adopted to predict human body key point coordinates, and a final attitude estimation result is output.

An example method of training a detector head for object detection of a training object category based on a frozen vision and language model (VLM) is provided. The method includes receiving the frozen VLM pre-trained on a plurality of image-text pairs. The method includes determining, for an image embedding generated by a pre-trained image encoder of the frozen VLM and by the detector head, a detection region embedding indicative of one or more regions of interest in an image. The method includes generating, by a pre-trained text encoder of the frozen VLM, a text embedding of the training object category. The method includes predicting, by the detector head and based on the detection region embedding and the text embedding of the training object category, an object from a target object vocabulary associated with the training object category. The method includes providing the pre-trained frozen VLM and the trained detector head.

The invention discloses a multi-modal adaptive fine-grained feature fusion method based on an unmanned aerial vehicle visual angle, and the method comprises the steps: carrying out the feature extraction of a visible light image and an infrared image collected by an unmanned aerial vehicle through a single-modal feature extraction branch, and obtaining multi-scale feature maps of two modals; based on the multi-scale feature maps of the two modalities, the weight is adjusted by calculating the local region structural similarity of the modal features, and an adaptive fusion weight matrix is constructed; performing fine-grained feature weighted fusion on the multi-scale feature maps of the two modalities by using an adaptive fusion weight matrix, matching the weight matrix with the spatial size of the feature maps through an interpolation method in the fusion process, and then performing weighting operation to obtain a fused feature map; and based on the fused feature map, firstly aggregating multi-scale features through the neck of the detector, then executing target classification and bounding box regression through the head of the detector, and outputting a target classification result and a bounding box regression result. The method can adapt to a complex detection scene of the visual angle of the unmanned aerial vehicle.

A modular laser encoder system is disclosed which comprises one or more laser units (2) and one or more detector heads (4), with any one of the laser units (2) being connectable in use to any one of the detector heads (4) to provide laser light to the connected detector head (4) and with the connected detector head (4) using the laser light to generate a detection signal, wherein a signal level (S) associated with the detection signal varies depending on which combination of laser unit (2) and detector head (4) is used, and wherein each of the laser units (2) and detector heads (2) is associated with one or more coefficients (c1, c2) which aim to normalise a response of that laser unit (2) or detector head (4) such that a corrected signal (S) is derivable from the detection signal by a signal processing unit (50) using the coefficients (c1, c2) associated with the laser unit (2) and detector head (4) of the combination concerned, with the corrected signal (S) having a signal level that is substantially consistent regardless of what combination of laser unit (2) and detector head (4) is used.

The utility model relates to the technical field of constructional engineering, and discloses a structural crack detection device for a high-rise building, which comprises a base and a detector body, universal wheels are fixedly connected with the bottom of the base in a front-back and left-right symmetrical manner, a height adjusting mechanism is arranged at the top of the base, and the height adjusting mechanism comprises a fixed seat. The fixing base is fixedly connected to the top of the base, and the top of the fixing base is fixedly connected with a fixing cylinder. The servo motor drives the worm to rotate, the screw rod is driven to rotate through meshing transmission of the worm and the worm wheel, and the lifting plate can drive the lifting column to stably move up and down under the constraint action of the limiting rod, so that the height of the detection head body is accurately adjusted. The high-rise building crack detection device can meet the detection requirements of structural cracks of high-rise buildings at different heights, is stable and reliable in operation, avoids errors possibly caused by manual adjustment, ensures that the detection head can be accurately aligned with a detection area, and improves the reliability of detection data.

The beam parameter measurement device for boron neutron capture therapy provided in this application includes: a detector; a beam inlet window provided on the side of the test chamber facing the beam outlet, with the detector head extending into the interior of the test chamber; a moving mechanism on which the detector is mounted for adjusting the position of the detector head inside the test chamber; an adjustment mechanism on which the test chamber is mounted for adjusting the position of the test chamber to make the geometric center of the test chamber coincide with the center of the beam; and a control system including a data acquisition module and a motion control module. The data acquisition module is electrically connected to the detector for acquiring beam data output by the detector, and the motion control module is electrically connected to the moving mechanism and the adjustment mechanism for controlling the moving mechanism and the adjustment mechanism. This application can reliably adjust the position of the detector inside the test chamber, and can also adjust the position of the test chamber to ensure that the geometric center of the test chamber coincides with the center of the beam, thereby improving the accuracy of the measurement data.

1. Name of the product in this design: Detector head of a Doppler underwater measuring device. 2. Application of this design: A device for emitting sound waves into water and receiving scattered signals to calculate the velocity, direction, and profile distribution of water flow. The probe head of the Doppler underwater measuring device is used to assemble the Doppler underwater measuring device. 3. The key design feature of this product is its shape. 4. The picture or photo that best illustrates the key design points: Design 1 front view. 5. Design 1 is designated as the basic design. 6. Other situations requiring explanation: In Design 1, the part depicted by the dashed line is not protected, while the part drawn by the solid line is protected; in Design 2, the part covered by red is not protected.

The invention relates to an integrated composite detector based on infrasound audio vibration. A collection detector integrating three sensors is composed of an infrasound sensor, a vibration sensor, a microphone and a collection control calculation circuit board. A Beidou antenna, a 4G antenna and an LR-WIFI antenna are installed in the detector head, head solar energy serving as an auxiliary power supply is installed on the surface of the head of the detector head, and external solar energy serving as a main power supply is installed outside the detector head. The detector head is installed on the ground nail barrel, the battery pack is installed in the ground nail barrel, and the ground nail head is connected below the ground nail barrel. A vibration sensor is installed in a ground nail head, a sound guide pipe is installed outside a detector head, a microphone is connected with the sound guide pipe, and sound waves enter the microphone from the sound guide pipe. According to the invention, good detection of homologous infrasonic waves, audio sound waves and vibration is realized.

This invention discloses a detection end stress detection device based on an infrared sensor, belonging to the technical field of infrared stress detection devices. It includes a detection device body, a detector head fixedly connected to one side of the detection device body, and mounting plates symmetrically fixedly connected to the side of the detection device body near the detector head. A frame is fixedly connected between the mounting plates and the detection device body. An obstruction removal mechanism is provided on the frame, including a vertical plate fixedly connected to the upper surface of the upper mounting plate. This mechanism can blow away floating objects and impurities from the infrared illumination path and the surface of the object to be detected. This not only eliminates propagation obstacles of infrared radiation, ensuring that radiation can smoothly reach the detector end and avoiding problems such as signal strength weakening, signal distortion, and background interference, thereby improving measurement accuracy, but also reduces the influence of external factors on the measurement, keeping the illumination path clean and unobstructed, reducing error sources, and improving measurement stability.

The utility model discloses a kind of interval support mobile semiconductor detection support, it is related to semiconductor detection technical field.The detection support, comprising: support frame body is supported on the top of monitoring window by support piece, for movable support probe holder;Support frame body includes frame, first center strip and second center strip are spaced apart in frame, first center strip and second center strip are spaced apart with frame respectively;Bearing block and support piece are fixedly connected;Support piece is fixedly connected on chamber top cover;Probe holder includes barrel body connector and connecting block;Connecting block protrudes the side wall of barrel body connector, is provided with through hole, for continuously fixed in different positions with probe holder.Avoid the influence of the fluctuation of different deposition temperature of chamber to the detector head, probe holder etc. of monitoring equipment;Realize that probe holder can be installed and positioned at any position, test position is arbitrarily positioned, compatible with various size substrate and tray change.

The present invention refers to a detector and a method for obtaining Kikuchi images by using electron backscatter diffraction (EBSD) or transmission Kikuchi diffraction (TKD) technique. In particular, the present invention refers to a detector comprising a detector body, a detector head with a scintillation screen and a photodetector with a active surface for detecting Kikuchi patterns, and means configured to move the detector head with respect to the detector body. The method comprises obtaining a first and a second Kikuchi pattern, and moving the detector head after obtaining the first Kikuchi pattern and prior obtaining the second Kikuchi pattern.

A radiation detector head assembly includes a detector column including a detector having a first surface and a second surface opposite the first surface. The detector column includes a first collimator disposed over the first surface of the detector and a second collimator disposed over the second surface of the detector. The detector column includes a first radiation shield disposed over the first collimator. The detector column includes a second radiation shield disposed over the second collimator. The detector column includes a gasket disposed between a horizontal interface between the first and second radiation shields.

A probe set (1) comprises a light emitter probe and a light detector probe for monitoring a gas in a cavity of a subject. The transmitter probe comprises a transmitter head (2) connected with a first connector interface (3), and the detector probe comprises a detector head (4) connected with a second connector interface (5). The probe set (1) further comprises a plastic tab (6) having light attenuation properties, in which the emitter head (2) is arranged on one side of the tab, and the detector head (4) is arranged opposite the emitter head (2) and on the other side of the plastic tab (6) such that a light emitting region of the emitter head (2) and a light collecting region of the detector head (4) face each other, and the plastic lug (6) with the light attenuation characteristic is located between the emitter head (2) and the detector head (4).

The application discloses a multi-modal adaptive fine-grained feature fusion method based on a UAV visual angle, which comprises the following steps: visible light images and infrared images collected by a UAV are subjected to feature extraction through single-modal feature extraction branches respectively, so that multi-scale feature maps of two modes are obtained; based on the multi-scale feature maps of the two modes, the weight is adjusted by calculating the local region structure similarity of the modal features, and an adaptive fusion weight matrix is constructed; the multi-scale feature maps of the two modes are subjected to fine-grained feature weighted fusion by using the adaptive fusion weight matrix, in the fusion process, the weight matrix and the feature map space size are matched through an interpolation method first, and then a weighted operation is performed, so that a fused feature map is obtained; based on the fused feature map, the multi-scale features are aggregated through a detector neck first, and then target classification and a bounding box regression are performed through a detector head, so that a classification result and a bounding box regression result of the target are outputted. The application can adapt to a complex detection scene of the UAV visual angle.

The utility model provides a bounce detection device, and belongs to the technical field of detection equipment. The bounce detection device comprises a mounting bottom plate. A measuring mechanism bracket, a shaft bottom positioning support and a clamping cylinder bracket are sequentially arranged on the mounting bottom plate from left to right; a horizontal clamping air cylinder is arranged on the top of the clamping air cylinder support, and a bearing is arranged at the output end of the horizontal clamping air cylinder. A plane bearing is arranged at the top of the shaft bottom positioning support; the right side of the measuring mechanism support is provided with an electric concentricity detector head. The top of the measuring mechanism support is provided with a radial measuring head cylinder, and the output end of the radial measuring head cylinder is provided with an L-shaped support. The front side wall of the L-shaped support is provided with a radial run-out electric measuring head. The right side wall of the L-shaped support is provided with an axial measuring head cylinder, and the output end of the axial measuring head cylinder is provided with an axial jumping electric measuring head.

An imaging system is provided that includes a gantry, at least five detector units mounted to the gantry, a corresponding collimator for each of the detector units, at least one processing unit, and a controller. Each collimator has septa defining plural bores for each pixel of at least some of a plurality of pixels of the detector unit. A corresponding interior septum of the collimator is disposed above an internal portion of a corresponding pixel of the at least some of the plurality of pixels. The at least one processing unit is configured to obtain object information corresponding to the object to be imaged. The controller is configured to control an independent rotational movement of each the detector units used to acquire scanning information by detecting emissions from the object, wherein the controller rotates each of the detector units at a corresponding sweep rate.

An x-ray inspection system includes a probe assembly and a control assembly. The probe assembly includes a probe head including at least one x-ray source and a plurality of x-ray detectors. The at least one x-ray source is configured to generate and direct a x-ray beam to a target material of a component. The plurality of x-ray detectors includes at least a first x-ray detector and a second x-ray detector. Each of the first x-ray detector and the second x-ray detector is configured to receive an x-ray diffraction of the target material resulting from an interaction with the x-ray beam. The control assembly includes a controller configured to scan the component by controlling the at least one x-ray source to direct the x-ray beam to the target material and capturing material composition data for the target material from the x-ray diffraction received by the first x-ray detector and the second x-ray detector and calculate a strain or a stress of the target material based on the material composition data.

A laser encoder system (1) is disclosed which comprises a detector head (4) which is adapted to generate a detection signal from which positional data relating to the position of a target (8) is derivable. The detection signal is an analogue quadrature signal comprising first and second constituent signals (c, s) having a predetermined phase difference between them. First and second electrical pathways (43, 45, 47) respectively carrying the first and second constituent signals (c, s) within the laser encoder system are arranged (M) to have substantially the same length in order to maintain the predetermined phase difference between the first and second constituent signals (c, s), thereby to avoid introducing (or to reduce) a sub-divisional error in the derived positional data.

This invention relates to the field of railway construction technology and discloses a rail inspection device for railway construction, comprising: a rail body to be inspected, with grooves on both sides of the rail body, and a self-propelled drive unit installed on the rail body; further comprising: a revolution drive unit fixedly connected to the self-propelled drive unit, a detection shell provided on one side of the revolution drive unit, an ultrasonic flaw detector fixed to the top of the detection shell, a U-shaped plate fixed to the bottom of the detection shell, a swinging component installed at the bottom of the U-shaped plate, and an ultrasonic flaw detector head fixed to one end of the swinging component; this invention achieves automatic movement along the rail through the self-propelled drive unit, reducing the need for manual operation and greatly improving inspection efficiency; through the cooperation of the revolution drive unit and the adjustment unit, the position of the ultrasonic flaw detector head can be flexibly adjusted to ensure that it maintains the optimal detection distance with the rail surface, thereby improving inspection accuracy.

Disclosed is a header for a radiation detector assembly provided for mounting a detector head into an enclosure formed by the header and a detector can to form the radiation detector assembly. The detector head includes a semiconductor radiation detector arranged on a first side of a substrate and a thermoelectric cooler, TEC, arranged on a second side of the substrate, the header including: a base plate having a first side for mounting the TEC and a second side with an attachment mechanism for attaching the radiation detector assembly to a radiation-detecting appliance; contact pins that provide electrical coupling through the base plate protruding from the first side of the base plate to substantially define a rim for accommodating the TEC within the rim; and a draining outlet with an opening through the base plate between its first and second sides transferring a gas to and / or from the enclosure.

A laser encoder device is disclosed which is adapted to receive an optical fibre assembly. The optical fibre assembly comprises first and second parts (15, 17) which are mechanically coupled to one another. The laser encoder device 5 comprises a decoupling arrangement (40) which is operable to decouple the second part (17) mechanically from the first part (15). In a specific embodiment, the laser encoder device is a detector head, the first part (15) is a strain relief component, and the second part (17) is a collimator.

The invention discloses a target recognition method based on adaptive dynamic convolution feature extraction and detail enhancement, relates to the technical field of image target recognition, and designs an adaptive dynamic convolution feature extraction structure (C3DC) in order to solve feature learning difficulty caused by small target scale in an image. The adaptability of the model to a small-scale target is enhanced by dynamically adjusting a convolution kernel; in order to solve the problem of small target feature loss caused by a complex background, the model adopts a detail enhancement shared convolution detection head (GNDE), group normalization and detail enhancement convolution technologies are combined, and features of small targets are enhanced, so that the small targets are separated from the complex background; in order to solve the problem that loss calculation is difficult due to uneven sample quality, an HWIoU loss function is designed, interference of geometric measurement on the training process is reduced through a dynamic adjustment mechanism, and the precision and generalization ability of the method are improved.

This utility model relates to the field of crack inspection technology, and in particular to a device for inspecting cracks in the inner wall of pipes. It includes a fixed plate, a connecting rod fixedly connected to the fixed plate, an ultrasonic flaw detector head fixedly connected to the connecting rod, a display assembly fixedly connected to the fixed plate, the display assembly and the flaw detector head connected via wires, a rotating sleeve connected to the fixed plate via a relative moving mechanism, and a connecting sleeve rotatably connected to the rotating sleeve via a bearing. The connecting sleeve is fitted onto the pipe and fixed by the fixing mechanism. The connecting sleeve has graduation lines. This utility model can detect cracks in the inner wall of pipes, avoiding missed detections.