4results about How to "Improve detection performance" patented technology

An electronic sentinel and its regional joint defense system include a main detection unit, a main control module, and at least one electronic sentinel unit. The main detection unit includes a detection unit and a communication module. The electronic sentinel unit includes a mobile pack, an optical scanning head, a communication module, a main control board, a transmitting unit, a positioning module, and an automatic omnidirectional deflection unit. The electronic sentinel unit can be mounted on a mechanical vehicle or carried by personnel via the mobile pack. A communication link enables information sharing between the units. The automatic omnidirectional deflection unit compensates for attitude changes caused by the movement of the mobile vehicle, ensuring the stability of the optical scanning head. Through the coordinated operation of the main detection unit and the electronic sentinel unit, the system achieves full coverage of detection ranges, filling security gaps in building gaps. The use of mobile electronic sentinel units allows for flexible deployment of the detection range, adapting to various complex terrain environments and improving the overall effectiveness of regional security.

The application provides a self-adaptive adjustment distributed optical fiber vibration sensor method, system and device, which is applied to the field of optical fiber sensing technology and comprises the following steps: receiving parameters of a DVS, selecting a monitoring mode applied by self-adaptive adjustment according to the received parameters of the DVS, the monitoring mode comprising a full-line measurement mode and a local measurement mode, calculating average light intensity and interference coefficient of a preset reference optical fiber section, judging whether the average light intensity is within a preset range, if yes, judging whether the interference coefficient is within a preset range, if yes, demodulating and calculating a vibration signal and positioning information, matching state information and early warning information according to a preset algorithm model, and displaying the output state information and early warning information. The application adopts the DVS to adaptively adjust line parameters after the optical fiber is connected to realize the best monitoring effect, and the DVS is changed from professional and complex to simple and easy to use without complex debugging by professional technicians.

The application discloses a conjugated non-fullerene acceptor material with azaparacyclophanquinone as a core, and a structural general formula is shown as formula I: wherein R1 and R2 are C m H 2m+1 , m is greater than or equal to 1 and is an integer; and X is any one of H, F, Cl, Br and CN. The acceptor material has excellent performance, three-dimensional charge transport characteristics and good intermolecular stacking effect, and high electron mobility. When the material is applied to a binary organic photodetector, the material exhibits excellent near-infrared light detection performance, including high specific detectivity, high responsivity, fast response speed and low dark current density.

The utility model belongs to ophthalmic examination technical field especially is a kind of multi-purpose ophthalmic examination device, including fixed column, the anti-skid pad of fixed installation is provided at fixed column bottom, the movable support column is provided in fixed column inside, the pin hole is provided in movable support column side, the fixed pin is provided in fixed column side, and the detection adjustment platform is fixedly installed in movable support column top, the fixed frame is fixedly installed in detection adjustment platform top, the support bracket is provided in fixed frame bottom, and the electric push rod is fixedly installed in fixed frame top, and one end of electric push rod is fixedly connected with the limit head cover.