4 results about "Dual detector" patented technology

This invention discloses a method and system for detecting micro-UAVs based on target reflectivity, solving the problem of low-reflectivity targets being difficult to detect in complex environments in existing technologies. It achieves the identification of micro-UAVs by combining active laser detection with target reflectivity feature analysis. The method includes: emitting pulsed laser light towards the target area; synchronously acquiring target signals through dual detectors with a common optical path design to obtain target geometric features and reflectivity intensity signals; calculating the original reflectivity based on the reflectivity intensity signals and obtaining target distance information; correcting the original reflectivity based on the target distance information to obtain a corrected reflectivity value; generating target motion features through multi-frame temporal analysis; and fusing the corrected reflectivity value, target geometric features, and target motion features based on a fusion strategy to construct a comprehensive target feature vector; inputting the comprehensive target feature vector into a classifier to output the identification result of the micro-UAV.

This invention belongs to the field of high-power semiconductor laser array coupling technology, specifically providing an optical element dispensing and curing system and method based on dual-target monitoring. The system includes a multi-degree-of-freedom precision displacement platform, a vision inspection unit, a dispensing system, a dual-path photoelectric feedback module, and a central control unit. The dual-path photoelectric feedback module includes a beam splitting unit, an optical power detection unit, and a spot imaging detection unit. The beam splitting unit splits the laser beam into two paths, one of which is used for beam analysis to obtain the beam arrangement. The optical power detection unit receives the other beam from the beam splitting unit and provides real-time feedback of its optical power value. The spot imaging detection unit receives the reflected sampled beam. The central control unit integrates an industrial control computer and a motion control card. This invention designs a closed-loop hardware system including a beam splitting prism, dual detectors, and a multi-degree-of-freedom platform to solve the problem of low multi-degree-of-freedom coupling efficiency in existing technologies.

This utility model relates to the field of online water quality monitoring technology, and provides a total organic carbon (TOC) monitor, including a sample injection component, a syringe pump, an aeration component, a combustion furnace, a flow control component, a flow path filter component, a multi-channel NDIR detector, and a host computer. The sample injection component and the aeration component are both connected to the syringe pump. The sample injection component is connected to the combustion furnace via a sample injection tube. The flow control component is connected to the aeration component and the combustion furnace. The combustion furnace is sequentially connected to the flow path filter component and the multi-channel NDIR detector. The multi-channel NDIR detector is connected to the host computer. The multi-channel NDIR detector used in this utility model is equipped with filters of different wavelengths and dual infrared detectors, capable of detecting CO2 concentrations of 2000 ppm and 500 ppm, enabling the measurement of high-concentration CO2. Furthermore, by adjusting the syringe pump and the flow control component to increase the flow rate, the measurement of low-concentration CO2 can be achieved. This utility model can meet the TOC measurement needs of various scenarios.

This application discloses an X-ray interferometric dual-detector cooperative detection system and method, relating to the field of X-ray interferometry technology. The system includes: an imaging detector, a counting multi-channel detector, a displacement adjustment system, and a control unit. The displacement adjustment system controls the imaging detector to move onto the incident X-ray path. The imaging detector acquires an interference spot image of the X-rays. The control unit identifies interference fringe regions in the interference spot image and calculates the target movement required for alignment between the counting multi-channel detector and the interference fringe regions based on the center position and relative spatial position of the interference fringe regions. The displacement adjustment system controls the counting multi-channel detector to move onto the incident X-ray path according to the target movement amount. The counting multi-channel detector acquires different phase signals of the X-ray interference fringes. This application improves the acquisition efficiency and temporal resolution of X-ray interferometric signals.