4results 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 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.

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.