14 results about "Angular response" patented technology

The invention relates to a method for radiation detection chip angle response compensation. The method comprises the following steps: step 1, testing the counting rate of deposition of each channel of array SiPM when gamma rays have different incident angles; 2, according to a standard dose rate value and the counting rate of each channel of the array type SiPM at different incident angles obtained in the step 1, constructing a linear equation set; 3, solving the system of linear equations in the step 2 to obtain an angle response correction matrix; and 4, correcting the angle response of the chip according to the angle response correction matrix in the step 3. According to the invention, the angle response compensation of the thin-layer scintillator radiation detection chip on the directional dose rate of different incident angles is realized, and the problem of measurement deviation of the radiation detection chip caused by the change of the incident angle of the radiation source is solved.

The utility model discloses a thermoluminescence detector angle response irradiation device which comprises a supporting frame, a plurality of vertically distributed positioning grooves are formed in the outer walls of the two sides of the supporting frame, a carrying rod is installed on the supporting frame through the positioning grooves, and a plurality of linearly distributed grooves are formed in the outer wall of the front face of the carrying rod. The outer portion of the front face of the carrying rod is sleeved with an outer cover, a protractor is fixedly arranged on the outer wall of one side of the supporting frame, a locking assembly located on the outer side of the supporting frame is arranged at one end of the carrying rod, stopping discs are arranged on the outer walls of the two ends of the carrying rod, and supporting shafts installed in the positioning grooves are arranged on one sides of the stopping discs. According to the utility model, the plurality of loading rods with adjustable angles and the grooves are adopted, so that the loading of a plurality of detectors can be realized, the irradiation of metering sheets under different angle conditions can be met, and data of a plurality of different angles can be obtained through one-time irradiation.

The application discloses a center-of-gravity driving aircraft precise attitude regulation method and system, and particularly relates to the field of aircraft attitude control technology, and is used for solving the problem of high operation threshold and easy loss of control of man-machine coupling in a complex environment. First, cabin pressure distribution data is collected and frequency domain decoupling is performed, and a real low-frequency intention driving vector and an associated high-frequency jitter feature are accurately separated. Then, the intention is mapped to a flow field coordinate system that fuses terrain and airflow to perform aerodynamic interference impedance analysis, generate an aerodynamic impedance compensation matrix, and avoid collision risks. The high-frequency jitter and the expected body angular response matching resonance band are extracted, a dynamic anti-oscillation damping coefficient is output, and resonance is suppressed. Finally, multi-dimensional parameters are input into a nonlinear control solver to perform joint optimization and generate a thrust distribution sequence for execution, thereby constructing a regulation closed loop from intention decoupling to physical execution, and ensuring extreme smoothness and flight safety in an extremely simple operation mode.

The application relates to a fast prediction method and device for sound scattering characteristics of a complex target under limited beam incidence, which comprises the following steps: constructing a three-dimensional geometric model of the complex target, and dividing the surface into a triangular facet grid; based on the set incidence parameters of the limited beam, calculating the included angle between the direction vector of the triangular facet to the sound source and the beam direction vector, and screening the illuminated facets in response to the included angle being less than half of the beam angle; calculating the scattering contribution of all the screened illuminated facets in the frequency domain, coherently superimposing the scattering contribution, obtaining the frequency domain scattering sound field of the complex target under the limited beam incidence, and interpolating the frequency domain scattering sound field in the wideband frequency range to obtain the wideband scattering response, and calculating the wideband time domain scattering waveform of the complex target under the limited beam incidence. The application can be applied to the near-field incidence condition of the limited beam, can consider the calculation accuracy and efficiency, and can process the underwater target sound scattering characteristics of the complex target geometric shape.

The utility model discloses a CZT detector test angle response measuring device, which relates to the technical field of semiconductor testing and comprises a base, a fixing mechanism, a measuring cover, a driving mechanism and a plurality of radioactive sources. The fixing mechanism is installed on the base and used for fixing a to-be-tested piece. The measuring cover is hemispherical, is rotationally mounted on the base and is used for covering the fixing mechanism; a plurality of placing holes are formed in the measuring cover and are used for installing radioactive sources in a one-to-one correspondence manner; the driving mechanism is installed on the base, connected with the measuring cover and used for driving the measuring cover to rotate. By means of the design, testing at different angles is achieved, the testing efficiency is improved, and meanwhile comparison parameters of multiple angles can be measured through one device.

The invention relates to a spherical online neutron spectrometer design method and a neutron spectrometer, and the design method comprises the following steps: 1, determining design parameters which at least comprise an energy measurement range and an angle response range; step 2, determining the material of the moderated body; step 3, constructing test models of a plurality of neutron spectrometers, wherein the set depths of the detectors among the test models and / or the set numbers of the detectors with the same depth are different; step 4, calculating the energy response of each test model during uniform incidence of 4 pi; 5, determining the set depth and the set number of the detectors according to the calculation result of the energy response of each test model, and obtaining a design model; and 6, modeling according to the design model to obtain a simulation model, verifying whether the simulation model meets the requirements of an energy measurement range and an angle response range, if so, determining that the design model is qualified, and if not, determining that the design model is unqualified. The method can be used for design guidance and is wide in application range.

1. The name of the product of this design: Thermoluminescent detector angular response irradiation device. 2. Purpose of this design product: used for testing the angular response performance of thermoluminescence detectors. 3. The design key point of this appearance design product lies in the shape. 4. The picture or photo that best illustrates the design points: three-dimensional picture.

Coded information of a current block and neighboring blocks of the current block is received, where the current block is predicted in an intra directional mode. The intra directional mode of the current block is determined to be associated with an angle that is one of smaller than 90 degrees and larger than 180 degrees. In response to the intra directional mode of the current block being associated with the angle, whether a delta angle associated with the current block is a pre-defined delta angle is determined. In response to the delta angle associated with the current block not being the pre-defined delta angle, a single direction intra prediction and not a bi-direction intra prediction is applied to the current block. A sample of the current block is reconstructed based on an adjacent reference sample on a reference line that is determined according to the single direction intra prediction.

The invention provides a detection system and a detection method for an intelligent sensor and the intelligent sensor. The detection system comprises: a multi-dimensional adjustment platform having a bearing surface corresponding to a mechanical reference surface of an intelligent sensor to be detected; the laser collimator is arranged on the multi-dimensional adjusting platform, and an angle between a light path of the laser collimator and the bearing surface is known; the blackbody radiation source and the multi-dimensional adjusting platform are separately arranged; the oscilloscope is used for measuring output signals of the sensor, the multi-dimensional adjusting platform can respectively move along a first axial direction and a second axial direction and can respectively rotate around the first axial direction and the second axial direction, and the first axial direction and the second axial direction are vertical to a light path of the laser collimator. The detection system can directly measure a plurality of technical indexes of the sensor, including at least one of a sensor visual axis, a field angle, a response rate, a noise equivalent temperature difference, an upper side frequency and a lower side frequency, and provides an efficient, reliable and consistent detection means for sensor admission inspection, manufacturing and product delivery inspection.

The present invention discloses a method for optimizing the trajectory of a spherical robot, which comprises the following steps: S1. Obtain target state information from the global path; obtain the roll angle response, and the current coordinates and attitude angles of the spherical robot from the IMU; S2. Initialize the prediction parameters; S3. Use the dynamic model to obtain the predicted state; S4. Use the kinematic model to obtain the predicted trajectory; S5. Calculate the error using the error function. If the error is less than the specified error, or the loop has been greater than or equal to the running duration threshold, stop the iteration and enter step S6. If the error is greater than or equal to the specified error and the loop time is less than the running duration threshold, update the prediction parameters with IPOPT and then re-enter step S3; S6. Send the attitude control parameters to the attitude controller. This solution can guide the spherical robot to always track the global path with a stable attitude, and has good stability and robustness for long-term operation.

The invention discloses an image processing method, system and device and a computer readable storage medium, and relates to the technical field of computer vision and target detection, and the method comprises the steps: obtaining a to-be-detected image; in the to-be-detected image, determining an initial orientation bounding box of the to-be-detected object; determining a main axis direction of the to-be-detected image and a stability coefficient of the main axis direction; generating a critical deflection angle of the initial directional bounding box based on the stability coefficient; determining a direction included angle between the initial directional bounding box and the main axis direction; and in response to the fact that the direction included angle is smaller than the critical deflection angle, deflecting the initial orientation bounding box to the main axis direction to obtain a target orientation bounding box of the to-be-detected object. The stability coefficient reflects the deflection strength in the main axis direction, so that the critical deflection angle is matched with the deflection strength in the main axis direction, the accuracy is higher, then the target orientation bounding box consistent with the main axis direction can be obtained, the direction of the to-be-detected object can be adaptively adjusted, and the stability and precision of direction detection of the image are improved.

This invention discloses a fuzzy calibration method for photoelectric angle sensors based on ANSYS simulation, belonging to the field of fuzzy calibration technology for photoelectric angle sensors. The method includes the following steps: Based on the identification results, the nodal displacement data as a function of angle from the sensor simulation output are retrieved to construct a family of periodic displacement offset fitting functions. Curve fitting processing is then performed on one rotation data to determine the angular response skew caused by structural eccentric loading under conditions where no non-axisymmetric loading is set during the simulation. Based on the determined angular response skew results, a residual attention-enhanced Transformer structure is constructed to extract the error change trajectory feature set from the structural skew envelope, and a drift discrimination result reflecting the direction, level, and stability of structural error drift is output. This invention solves the problem of error modeling distortion in photoelectric angle sensors under non-axisymmetric loads and achieves error drift feature identification and dynamic accuracy control.

The application provides a detection system, a detection method and a smart sensor for the smart sensor. The detection system comprises a multi-dimensional adjustment platform having a bearing surface corresponding to a mechanical reference surface of a to-be-detected smart sensor; a laser collimator arranged on the multi-dimensional adjustment platform, an optical path of the laser collimator being known to the angle of the bearing surface; a blackbody radiation source arranged separately from the multi-dimensional adjustment platform; and an oscilloscope for measuring a sensor output signal, wherein the multi-dimensional adjustment platform is capable of being displaced along a first axial direction and a second axial direction respectively and is capable of being rotated around a first axis and a second axis respectively, the first axial direction and the second axial direction being perpendicular to each other and being perpendicular to the optical path of the laser collimator respectively. The detection system is capable of directly measuring a plurality of technical indexes of the sensor, including at least one of a sensor visual axis, a field of view angle, a response rate, a noise equivalent temperature difference, an upper edge frequency and a lower edge frequency, thereby providing an efficient, reliable and consistent detection means for sensor incoming inspection, production and manufacturing and product delivery inspection.

An apparatus, comprising at least one processor, and at least one memory storing instructions, the at least one memory and the instructions configured to, with the at least one processor, cause the apparatus to sample an angular response of a uniform antenna array uniformly in a normalized angular frequency range to obtain a set of angular samples, and to reconstruct an angular response of the uniform antenna array based on the set of angular samples and at least one Dirichlet kernel.