12results about How to "Improve anti-jamming" patented technology

The integrated microfluidic detection chip comprises a liquid conveying channel, the upper end and the lower end of the liquid conveying channel are each provided with an inlet, the center position of the side end of the liquid conveying channel is communicated with a mixing channel, the other end of the mixing channel is communicated with a flow velocity difference channel, and the flow velocity difference channel is communicated with a flow velocity sensor. An electrode detection disc is arranged on the side face of the flow velocity difference channel in a communicating mode, and a circular barrier is fixedly arranged in the electrode detection disc. Compared with a traditional detection chip, the integrated microfluidic detection chip based on dual-channel flow velocity difference vortex enhancement has the following remarkable advantages: a breakthrough in mass transfer limit is achieved: through multiple physical coupling of dual-channel flow velocity difference, incident angle optimization and a circular barrier, substance transmission is converted from single molecule diffusion to active vortex driving; the bottleneck that mass transfer of a microfluidic system is limited is solved, and in-situ dynamic refreshing of a detection interface is realized by an automatically generated discrete sample injection mode.

The invention belongs to the technical field of optical thin film detection, and particularly discloses an optimization method of an optical thin film detection system, which is used for solving the problems of weak interference resistance, poor pollution resistance and insufficient complex scene adaptation of the traditional detection system. The method comprises the following steps: pre-selecting a light needle beam with a needle-point-shaped cross section as a light source, defining a source plane light field, and constructing a limited energy generation condition through apodization operation; setting a plurality of groups of regulation and control parameters for three transmission states of diffraction, non-diffraction and focusing; building an experiment system to generate a directional light needle light beam, simulating pollution and interference scenes, and collecting light field data of different transmission nodes before and after interference; and quantizing the light field similarity through a witness function, screening an optimal regulation and control parameter, and integrating the optimal regulation and control parameter to a detection system. According to the invention, the anti-interference and information stability are improved from the light source essence, the method is adaptive to ultrathin, multi-layer thin film and complex environment detection, the detection precision and long-term stability are obviously improved, and both practicability and economy are taken into account.

The utility model relates to the technical field of automobile wire and discloses high-soft high-strength copper-clad steel automobile wire for business car, include: conductor unit and insulating sheath, the insulating sheath is covered in the outside of conductor unit, the conductor unit includes inner stranding layer and outer stranding layer, the outer stranding layer concentric stranding constitutes with inner stranding layer, the outer stranding layer is stranding in the outside of inner stranding layer, the inner stranding layer is stranding constitutes by tensile metal wire, the outer stranding layer is stranding constitutes by conducting wire; The insulating sheath includes first insulating layer, metal braid, stress release ring and second insulating layer. The utility model discloses by setting up by tensile metal wire and conducting wire respectively stranding constitutes and concentric stranding's inner, outer stranding layer, guarantees conductivity and promotes tensile strength and flexibility, solves the problem that pure copper conductor wire is easy to break, reduces weight and improves efficiency, also overcomes the problem of aluminum conductor space occupation, and the outer layer insulating sheath structure realizes excellent insulation and mechanical protection, reduces the risk of breakage.

The invention discloses an unmanned aerial vehicle self-locking switch system and a control method thereof, and relates to the technical field of unmanned aerial vehicles. The system comprises a switch button, an auxiliary power module, a main power module, a self-locking unit, a control unit and an electric quantity display unit, stable startup and shutdown are achieved through dual-time-sequence button control that first pressing lasts for a first preset time and second pressing lasts for a second preset time in cooperation with a time-sharing cooperation mechanism of auxiliary power and main power, the self-locking unit locks the switch state, and the electric quantity display unit displays the electric quantity. And accidental on-off caused by signal jitter is avoided. The system is extremely low in leakage current in a shutdown state, effectively prevents battery over-discharge, has electric quantity display and state feedback functions, and remarkably improves the reliability, safety and user experience of the switch.

A method for calculating the energy expenditure of experimental mice based on behavior tracking, relating to the fields of computational behavioral science and physiology, mainly includes the following steps: experimental data acquisition; foreground mask generation based on adaptive background subtraction; generating target detection rectangles for the mice in all video frames to determine the real-time position of the experimental mice; calculating the macroscopic displacement energy of the experimental mice at each moment during movement; processing to obtain the energy features of the microscopic movements of the experimental mice; performing feature fusion to construct a binary feature vector and inputting it into a gradient boosting tree (XGBoost) regression model to jointly map and obtain the energy expenditure of the experimental mice at each moment. This invention achieves metabolic energy expenditure prediction with high consistency with the gold standard of indirect calorimetry by constructing a dual-flow continuous physical quantification model that integrates macroscopic displacement work and microscopic spectral energy.

This invention discloses a high-transmittance adaptive focusing liquid crystal lens structure and standardized preparation method supporting polymer nanotransmission, belonging to the field of intelligent wearable optical devices and nanomaterial transmission technology. The lens adopts a four-layer integrated stacked structure consisting of a wear-resistant and anti-fouling blue light blocking protective layer, a polarization-independent gradient refractive index liquid crystal focusing layer, a nano-metasurface polarization conversion layer, and a high-transmittance substrate layer. A carbon nanotube-graphene-polyimide composite polymer nanotransmission interface is integrated at the edge. Through a precise 45°±0.3° angle between the metasurface layer and the liquid crystal molecule director and a bipolar polarizer composite liquid crystal design, it achieves a transmittance ≥82%, polarization independence ΔT ≤3.2%, focusing response ≤180ms, steady-state error ≤±0.10D, and nanotransmission loss ≤3% under polarizer-free conditions. It can be adapted to -10.00D to +6.00D myopia / hyperopia and ±6.00D astigmatism correction. This invention features a standardized six-step mass production process, with a single-piece manufacturing time of ≤90 minutes and a yield of ≥95%, completely solving common industry pain points such as low light transmittance, polarization dependence, high transmission loss, inconsistent processes, and difficulty in large-scale mass production of traditional liquid crystal lenses. This invention boasts an original structure, novel process, and performance comprehensively superior to similar international technologies, possessing extremely high patent licensing value and industrial mass production value.

The invention discloses a self-adaptive weight UWB-ultrasonic fusion positioning method. According to the technical scheme, the method is characterized by comprising the following steps that S1, parameters are collected, wherein UWB positioning data, ultrasonic positioning data, environment state parameters, equipment working state parameters and positioning task requirement parameters are synchronously collected; s2, acquiring effective positioning data: performing time synchronization, space calibration, anomaly detection and smoothing processing on the acquired positioning data to acquire the effective positioning data; s3, outputting an evaluation result: based on the positioning data quality, the environment suitability and the task matching degree, carrying out comprehensive evaluation on the UWB and the ultrasonic positioning module, and outputting the evaluation result; s4, obtaining an adaptive weight; s5, outputting a real-time positioning coordinate; and S6, performing closed-loop control. According to the method, the positioning precision is greatly improved, the method is adaptive to a complex environment, and fusion positioning can be accurately adaptive to different environment changes through environment state sensing and self-adaptive weight dynamic adjustment.

The invention aims to provide an electronic load voltage measurement and calibration method combined with dynamic temperature monitoring, which comprises the following steps of: calculating internal temperature field distribution of an electronic component in a current working state through a thermal-electric coupling model; based on the temperature field distribution, through a pre-stored temperature field-load electrical parameter mapping relation, determining a load thermotropic voltage error amount caused by the current temperature distribution; and compensating the original voltage values at the two ends of the electronic component, which are obtained by direct measurement, by using the thermally induced voltage error amount to obtain a high-precision compensated voltage value. According to the method, a closed loop from voltage measurement to thermal field sensing to real voltage restoration is realized, and the problem of dynamic measurement errors introduced by load self-heating is fundamentally solved.

The utility model discloses a controller switch wake-up circuit, and belongs to the field of electronic circuits. Aiming at the problems of high power consumption and high cost of the existing switch wake-up circuit, the utility model provides a controller switch wake-up circuit which comprises a wake-up sub-circuit and an acquisition sub-circuit which are arranged in parallel, and one end of the wake-up sub-circuit and one end of the acquisition sub-circuit are respectively connected with a switch signal; the input end of the wake-up sub-circuit is a switching signal, and the output end is a wake-up source signal for waking up the single-chip microcomputer. The input end of the acquisition sub-circuit is a switching signal, the output end of the acquisition sub-circuit is an acquisition signal of the switching signal, and a wake-up source signal of the wake-up sub-circuit and the acquisition signal of the acquisition sub-circuit are respectively connected with the single chip microcomputer. Through the arrangement of the wake-up sub-circuit, on one hand, the power consumption of the system is obviously reduced, and on the other hand, the wake-up sub-circuit can connect a plurality of switch signals in parallel to serve as a wake-up source signal to be input to the singlechip for wake-up, so that the number of GPIO (General Purpose Input / Output) ports of the singlechip is reduced, the hardware cost is reduced, and the compatibility is improved.

The utility model relates to a kind of PCB board thickness measuring device based on adaptive binocular vision, including machine table, feed conveying track, feeding assembly, AVI inspection component, discharge assembly, binocular range finder and discharge conveying track, the side of machine table is connected feed conveying track, the other side is connected discharge conveying track, feed area, AVI detection area and discharge area are sequentially set on the machine table, feeding assembly is set in feed area, AVI inspection component is set in AVI detection area, discharge assembly is set in discharge area, feeding assembly is set close to feed conveying track, binocular range finder is set on discharge conveying track. The utility model integrates the detection of binocular range finder and AVI appearance inspection machine, for the thickness measurement and appearance defect synchronous detection of PCB board, realize thickness and appearance synchronous detection.

The application belongs to the technical field of electromagnetic radiation, and particularly provides a full-metal antenna unit and an array thereof capable of switching left-handed and right-handed circular polarization, wherein, in the antenna unit, four identical linear polarization antenna array elements are sequentially arranged by rotation, and the radiation and switching of the antenna unit to left-handed and right-handed circularly polarized waves are conveniently realized by applying specific excitation phase differences to the four linear polarization antenna array elements. Further, in the full-metal antenna unit, the single-point feeding metal feeding probe adopted by each linear polarization antenna array element and the symmetrical structure of the two metal prisms adhering to the right-angle edges of the metal ground plate guarantee the stability and reliability of the phase adjustment of the linear polarization wave orthogonal components; meanwhile, the full-metal structure of the entire antenna unit improves the environmental interference resistance of the antenna unit and further reduces the processing difficulty and production cost.