12 results about "Surface tracking" patented technology

A non-contact sensing approach can be used to adjust a position or orientation (or both) of a non-destructive test (NDT) probe assembly relative to a surface of an object under test. Such sensing can include use of respective range sensors (e.g., laser- based range sensors or acoustic sensors, or combinations thereof). For example, an NDT acquisition, such as an acoustic inspection acquisition, can include use of a machine-implemented (e.g., automated) technique. In such a technique, sensed data can be acquired, indicative of at least one of a location or an orientation of a surface relative to a surface of an object under test such as a curved surface. In response, a representation of a correction (e.g., one or more "offset" values) can be determined to steer at least one of a location or an orientation of the probe assembly.

There is provided a cleaning robot including an image sensor, a first light source, a second light source and a processor. The image sensor captures has a field of view. The first light source emits light with a first emission angle, which covers the whole of the field of view within a detectable range. The second light sources emits light with a second emission angle, which overlaps with the field of view at different heights in the detectable range by different cross sections. The processor performs surface tracking according to image frames captured by the image sensor upon the first light source being turned on, and recognizes a type of a working surface upon the second light source being turned on.

The present application relates to a tracking unit for touchless surface tracking. The tracking unit is configured to be connected to a robotic device and to move across a surface of an object. The tracking unit comprises a body, one or more distance sensors mounted to a first side of the body and configured to detect a distance from the object, and one or more peripheral sensors mounted to a second side of the body and configured to detect a peripheral feature. A controller is configured to receive signals from the one or more distance sensors and the one or more peripheral sensors. The controller is configured to position the body at a fixed distance from the object and to prevent contact between the body and the peripheral feature.

This invention relates to a laser cutting device for metal sheets, comprising a body, a power unit, and a cutting head. A hollow base is mounted on the power unit, and a mounting sleeve extends vertically through the hollow base. Two rollers are located at the lower end of the mounting sleeve, with a drive wheel fixed externally, and internal threads within the sleeve's cavity. A support plate is positioned above the hollow base, with a guide mechanism between them. The support plate and the mounting sleeve are connected via an axial synchronizing element, and a rotary drive mechanism is mounted on the support plate. The cutting head extends vertically through the mounting sleeve, with external threads on its outer side, and an angle limiting mechanism is provided between the cutting head and the hollow base. This laser cutting device for metal sheets features three cutting modes and has a wide range of applications. When cutting flat sheets, it keeps the cutting area flat, improving cutting accuracy and quality. The rollers enable curved surface tracking, allowing for efficient cutting of curved sheets. This laser cutting device for metal sheets has a scientifically sound structure and low manufacturing and operating costs.

The application discloses an ocean front intelligent tracking method and device, medium and product, relates to the field of ocean front tracking, and comprises the following steps: obtaining a target front surface of a previous time node and a plurality of to-be-judged front surfaces of a next time node; combining a double extreme value method and point-to-point, point-to-surface and surface-to-surface distance calculation sequences, determining one to-be-judged front surface most similar to the target front surface and marking the to-be-judged front surface as a most similar front surface; determining a front surface tracking result based on the width of the most similar front surface, the width of the target front surface and the distance between the target front surface and the most similar front surface; and the front surface tracking result is that the target front surface and the most similar front surface are the same ocean front surface, or the target front surface and the most similar front surface are different ocean front surfaces. The application can realize more accurate ocean front surface tracking.

The invention discloses a synchronous visual tracking method for a particle motion and seepage path of a soil body contact surface, and relates to the technical field of visual tracking, the synchronous visual tracking method for the particle motion and seepage path of the soil body contact surface comprises the following steps: S1, obtaining data, and setting a storage library; s2, extracting feature parameters, and converting the feature parameters into feature vectors; s3, setting a weighting rule based on the data, and evaluating the state by adopting the model to generate an evaluation result; s4, a preset tracking rule is combined with the vector and the evaluation result to obtain a synchronous visual tracking scheme, and verification adjustment is carried out; s5, issuing the scheme to monitoring equipment of the direct shear apparatus for real-time tracking, and collecting data; and S6, presetting an abnormal judgment standard, carrying out comparison analysis, adding a label, and storing the label in a storage library. According to the method, the basic parameters of the particles of the soil body contact surface are obtained, data acquisition and splitting in traditional soil body contact surface tracking are avoided, and the accuracy of an evaluation result and the adaptability of a tracking scheme are improved.

The invention discloses an intelligent sensing device and method for freeze-thaw damage of high-cold and high-altitude concrete, and solves the defects of non-real-time, ex-situ and poor extreme environment adaptability in the prior art. The device comprises a concrete implantable sensing unit, a layered support framework, a multi-element signal acquisition terminal and a plateau enhanced protection system, the sensing unit is divided into a surface layer, a core and a protection layer and is embedded into a monitoring well, and multi-dimensional signals are acquired through a strain film, a phase change trigger module and a temperature and humidity composite sensor; the layered support framework ensures the installation precision and deformation synchronization; the terminal integrates extreme environment protection, signal processing and graded early warning functions; the protection system strengthens well wall and cable protection. According to the method, 10Hz synchronous sampling is achieved through drilling reinforcement and installation connection, in-situ real-time multi-dimensional intelligent monitoring is achieved through signal decoupling, freeze-thaw recognition and frontal surface tracking, damage indexes are quantified, three-level early warning is executed, a steel bar protection layer corrosion special alarm is pushed, an extreme environment is adapted, and key support is provided for safe operation and maintenance of cold region engineering.

The utility model provides a robot flexible intelligent manufacturing practical training system, which comprises a plurality of functional units, namely a numerical control processing unit, a visual sorting and carrying unit, a stamping processing unit, a deburring unit, a detection and assembly unit, an unstacking and warehousing unit and an intelligent conveying unit, and a general control management unit for controlling each unit, all the units are combined to form the flexible intelligent production line. Functional units of numerical control machining, visual sorting, stamping machining, deburring, intelligent detection and assembly, unstacking and warehousing and the like are integrated, and a plurality of basic modules are configured in each functional unit, so that practical training experiments of the basic modules such as industrial robot TCP setting, plane stacking, plane tracing, curved surface tracking, carrying coding, simulation welding and the like can be completed; the system integrates the functions of education and teaching, industrial application, scientific research and development and the like, improves the comprehensive skills of students in intelligent equipment such as industrial robots, and quickly improves the occupational skills and employment competitiveness.

A one-dimensional (1D) and two-dimensional (2D) scan scheme for a tracking continuously scanning laser Doppler vibrometer (CSLDV) system to scan the whole surface of a rotating structure excited by a random force. A tracking CSLDV system tracks a rotating structure and sweep its laser spot on its surface. The measured response of the structure using the scan scheme of the tracking CSLDV system is considered as the response of the whole surface of the structure subject to random excitation. The measured response can be processed by operational modal analysis (OMA) methods (e.g., an improved lifting method, an improved demodulation method, an improved 2D demodulation method). Damped natural frequencies of the rotating structure are estimated from the fast Fourier transform of the measured response. Undamped full-field mode shapes are estimated by multiplying the measured response using sinusoids whose frequencies are estimated damped natural frequencies.

This application belongs to the field of ultrasonic nondestructive testing technology, specifically disclosing an ultrasonic imaging method and apparatus based on ultrasonic echo correction. The method includes: acquiring ultrasonic echo signals corresponding to multiple scanning points within a test area; performing coarse surface tracking based on the signal characteristics of each ultrasonic echo signal within a preset surface search interval to determine a reference surface corresponding to all scanning points; using the reference surfaces corresponding to all scanning points to perform phase correction and secondary surface tracking on the corresponding ultrasonic echo signals to obtain the fine surface position corresponding to each scanning point; and extracting signal response data and reconstructing images within multiple depth windows using each fine surface position as a reference to generate an imaging result for the test area. This application can significantly reduce the misalignment effect of surface undulations on internal layer imaging, improve the imaging stability and interlayer stability of targets inside the sample, and enhance the quality of ultrasonic imaging.

This invention discloses a method for synchronously visually tracking the particle movement and seepage path at soil contact surfaces, belonging to the field of visual tracking technology. The method includes the following steps: S1, acquiring data and establishing a storage repository; S2, extracting feature parameters and converting them into feature vectors; S3, setting weighting rules based on the data and using a model to evaluate the state and generate evaluation results; S4, combining preset tracking rules with the vectors and evaluation results to obtain a synchronous visual tracking scheme, and verifying and adjusting it; S5, distributing the scheme to the monitoring equipment of the direct shear tester for real-time tracking and data collection; S6, setting preset anomaly judgment criteria for comparative analysis, adding tags, and storing the data in the storage repository. This invention, by acquiring basic parameters of soil contact surface particles, avoids the fragmented data acquisition in traditional soil contact surface tracking, improving the accuracy of evaluation results and the adaptability of the tracking scheme.

The invention discloses a magnetic navigation and body surface tracking combined visual positioning method, and relates to the technical field of visual positioning. Comprising the steps that two-dimensional image coordinates are extracted through image feature recognition based on visual perception, clustering is carried out according to a stable geometric configuration, and a collaborative coding vector sequence is generated; constructing a corresponding task state sequence according to the target transfer intervals, and generating a group of path coding vectors for each target transfer interval; when task transition of the task state sequence is monitored, judging that a jump event is established according to a path coding difference value before and after the transition, and synchronously updating the collaborative coding vector sequence; and carrying out residual joint matching on the synchronously updated collaborative coding vector sequence and the magnetic coordinate sequence, carrying out calibration based on a path coding vector, and outputting a final positioning coordinate. According to the invention, cooperative improvement of positioning precision and stability is realized in a multi-stage operation scene.