11results about How to "Simple hardware structure" patented technology

The application belongs to the technical field of signal transmission, and discloses a method for eliminating analog signal transmission error through digital compensation, which specifically comprises the following steps: in addition to the original signal transmitting circuit part, a signal detecting part composed of MCU, ADC and a communication module is arranged at the signal transmitting end; a signal detecting part composed of MCU and ADC communication module and a control part capable of controlling the signal at the output end to be offset and gain varied are arranged at the signal receiving end; the signal at the receiving end is collected by the MCU to compare with the data of the transmitting end communication module, and the difference between the two data is calculated to obtain the correction value of the amplitude and offset; the gain and offset of the signal are changed by controlling the offset and gain circuit part at the receiving end, so that the transmission error is eliminated, and the gain and offset control method is realized by using DAC, PGA and other components; the deviation of the frequency response can also be calculated according to the requirement, and is corrected by the gain and offset control circuit part.

The invention relates to the technical field of tunnel construction equipment, and discloses a device and a method for measuring deformation of a duct piece and a tail shield of a heading machine, and the device comprises a laser sensor installation pedestal disposed on a rotating mechanism assembly of a duct piece erector, an installation box connected to the pedestal, and a laser protector. The laser protector is used for shielding the opening of the mounting box. According to the method, the erector is driven to rotate and axially move through the controller, angle and distance data of different axial positions are collected in cooperation with opening and closing actions of the protector, a spatial form model is constructed, and deformation parameters are calculated. The existing structure of the erector is fully reused, an independent driving mechanism does not need to be additionally arranged, and hardware integration is simplified; through an automatic process and an anti-interference design, high-precision continuous measurement and real-time early warning of tail shield deformation are realized, and the construction safety and efficiency are improved.

The invention, which relates to the technical field of radar electronic countermeasure and semi-physical simulation, discloses an RFSOC-based dense bee colony interference semi-physical simulation system comprising a display control computer, a data exchange module, a power divider, a power supply module and a plurality of code element generation modules. The power divider shunts an externally accessed radar signal and then sends the signal to the code element generation module. The code element generation module takes an RFSOC chip integrated with RF, ADC / DAC, FPGA and ARM as a core, carries out signal processing by using the FPGA according to interference types and parameters issued by the display control computer, and directly synthesizes and outputs radar interference signals through the DAC. A traditional microwave frequency conversion module is replaced by the RFSOC chip, so that the hardware structure is remarkably simplified, and the cost is reduced; meanwhile, the system can generate as many as 50 mutually independent radar interference signals in real time, and the problems that in the prior art, the number of interference channels is small, and the dense bee colony interference environment is difficult to simulate are effectively solved.

The invention relates to the technical field of semiconductor packaging detection, in particular to a semiconductor lead bonding high-precision 3D detection method based on a monocular visible light camera, which comprises the following steps: acquiring an image sequence based on an ultra-low depth-of-field optical system and Z-axis continuous scanning, analyzing by adopting a focusing method after image alignment, and determining an optimal focus point on the surface of a lead layer by layer, a complete three-dimensional model is reconstructed by combining lead trajectory tracking and cubic spline interpolation, and is compared with CAD data to realize high-precision detection of defects such as height, radian, coplanarity, fracture and the like. According to the technical scheme, micron-sized three-dimensional shape reconstruction can be achieved on the premise that only one visible light camera is used, and the device has the advantages of being simplified in structure, high in anti-interference capacity, free of detection blind areas and suitable for on-line detection of vehicle-mounted power devices.

The embodiment of the application relates to the technical field of vehicles, and discloses a controller, a communication method, a vehicle-mounted optical communication system, electronic equipment and a vehicle, which comprise a processing module, an interface management module and an optical communication module; the processing module is connected with the interface management module and the optical communication module; the interface management module is connected with a plurality of signal sources in the vehicle; the optical communication module is connected with electronic devices; the interface management module is used for receiving an electric signal sent by the signal source and sending the electric signal to the processing module; the processing module is used for determining the priority of the electric signal based on the trigger type and the occurrence scene of the electric signal, determining the transmission strategy of the electric signal based on the priority of the electric signal, and sending the electric signal to the optical communication module based on the transmission strategy; and the optical communication module is used for performing photoelectric conversion on the electric signal to obtain an optical signal and sending the optical signal to the electronic device corresponding to the electric signal, so that the wiring structure in the vehicle is simplified, and the stability of vehicle signal transmission is improved.

Embodiments of this application disclose an interleaving method supporting unequal modulation, a subcarrier mapping method supporting unequal modulation, and a related apparatus. An interleaver includes a first interleaver and a second interleaver, the interleaver is configured to determine an order of information bits carried in a subcarrier of a first RU and a subcarrier of a second RU, and a modulation scheme of the first RU is different from a modulation scheme of the second RU. The first interleaver is configured to input information bits by row. A quantity of columns of the first interleaver is M1+M2, a quantity of rows of the first interleaver is a larger value in N1 and N2, N1 and M1 are determined based on a quantity of subcarriers of the first RU, and N2 and M2 are determined based on a quantity of subcarriers of the second RU. The second interleaver is configured to receive the information bits that are output by the first interleaver by column, and perform interleaving mapping on the information bits. According to the interleaver provided in embodiments of this application, information bits of a plurality of RUs using different modulation and coding schemes can be interleaved, to simplify a hardware structure of a communication apparatus.

The utility model discloses a three-phase three-wire and three-phase four-wire compatible electric energy meter, which comprises a power supply compatible circuit, the power supply compatible circuit comprises a primary side power supply circuit, a high-frequency transformer and a metering chip, the input end of the primary side power supply circuit is connected with a power grid, and the output end of the primary side power supply circuit is connected with the input end of the high-frequency transformer; the output end of the high-frequency transformer supplies power to the metering chip, and the output end of the metering chip outputs a metering result; an A-phase terminal, a B-phase terminal and a C-phase terminal of the primary side power supply circuit are connected with an A-phase wire, a B-phase wire and a C-phase wire of a power grid, an N-phase terminal in the three-phase three-wire mode is suspended, and an N-phase wire is connected in the three-phase four-wire mode. A current transformer is arranged in the primary side power supply circuit and comprises a primary coil, a secondary coil and a shielding winding, the shielding winding is arranged between the primary coil and the secondary coil, one end is grounded, the other end is suspended, and the shielding winding is used for shielding induced current between the primary coil and the secondary coil under the influence of stray capacitance. Compatibility is achieved, switching is not needed during switching, and long-term reliability and metering precision are improved.

The application discloses a kind of sensor general-purpose matching integrated circuits based on intermediate relay and electronic equipment;It is related to the field of electronic circuit, solve the problem such as poor adaptability of sensor and PLC by hardware modification or special conversion board, debugging is complex, cost is high etc.The interface of present application can be accessed to multiple types of sensors, output interface adapts different PLC port, conversion unit realizes signal conditioning, level conversion and logic processing, realize seamless docking of upstream and downstream.Intermediate relay coil is driven by sensor signal, controls contact group action, completes level conversion and logic flip, acts as signal bridge.The circuit is realized by setting intermediate relay unit, power source homologous circuit and signal conversion circuit, signal compatibility of different types of sensors and control module is realized.By selecting the on or off path of intermediate relay contact, PNP / NPN, normally open / normal close logic conversion is completed, and the problem of industrial field device mismatch is solved.

The application belongs to the technical field of unmanned aerial vehicle control. An unmanned aerial vehicle autonomous tracking method and system based on monocular vision are provided. The target unmanned aerial vehicle image captured by the monocular camera of the tracking unmanned aerial vehicle is obtained, and the three-dimensional space coordinates and the current relative speed of the target unmanned aerial vehicle are determined according to the target unmanned aerial vehicle image. The image error vector is calculated according to the three-dimensional space coordinates. According to the three-dimensional space coordinates and the current relative speed, the current relative speed is optimized by using the Kalman filtering algorithm to obtain the optimized current relative speed, and the position error vector is determined according to the optimized current relative speed. According to the image error vector and the position error vector, the fusion control input vector is determined, and according to the fusion control input vector and the current relative speed, the updated relative speed is determined for tracking the tracking unmanned aerial vehicle. The application greatly improves the control accuracy of the unmanned aerial vehicle autonomous tracking.

The invention relates to the technical field of quantum precision measurement, in particular to a super-cold atomic wave function density measurement method, device and system and a storage medium. According to the method, a dark-state selective transfer mechanism of three-energy-level atoms is utilized, two groups of spatial modulation lattice light with the same frequency and adjustable phases are precisely designed, sub-wavelength detection of super-cold atomic wave function density distribution is achieved, and compared with a super-cold atomic wave function density imaging technology in the prior art, the method has the advantages that the sub-wavelength detection efficiency is improved. The requirements of spatial resolution and high signal-to-noise ratio are considered at the same time, and the wave function density measurement and imaging precision is effectively improved.

A handheld 3D scanner and its system are disclosed, relating to the field of optical inspection technology. The handheld 3D scanner includes a support frame and a laser mounted on the support frame, the laser projecting laser light onto the object being scanned. The support frame includes a first mounting surface and a second mounting surface that are perpendicular to each other. At least two scanning cameras are evenly distributed along the extension direction of the first mounting surface, with the laser located between any two scanning cameras. The scanning cameras are used to acquire image information formed by laser light reflected from the object's surface. At least two tracking cameras are evenly distributed along the extension direction of the second mounting surface, the tracking cameras tracking reflective markers placed in the scanning environment. This handheld 3D scanner achieves high-precision and convenient measurement while maintaining a lightweight design.