9results about How to "No electromagnetic interference" patented technology

The application discloses a three-axis optical fiber acceleration sensor based on a silicon light microstructure, which distributes detection light into three mutually orthogonal detection light paths, respectively uses silicon-based micro-mirrors in the light paths to make the detection light incident to mutually orthogonal three side surfaces of a reflective mass, maps the optical power of reflected light according to the position of a reflection point based on the gradient distribution of the reflectivity of the mass surfaces, and feeds back the reflected light to an optical fiber through a coupling component, so as to determine the change of the position of the reflection point according to the identification result of the power state of the reflected light, accurately detect the displacement of the mass in each direction, and calculate the corresponding acceleration. The three-axis optical fiber acceleration sensor can realize high linearity and three-axis simultaneous measurement on a single or small amount of optical fibers, is completely connected through optical fibers, is suitable for a distributed detection scene at a long distance, can be demodulated centrally, and reduces the power consumption of terminal equipment. The application has a simple structure and is easy to mass produce.

This invention relates to the field of biodegradable tabletop manufacturing technology, specifically to a biodegradable and environmentally friendly fiber tabletop and its manufacturing method, comprising: a substrate layer, wherein the substrate layer is provided with a moisture-proof sealing layer, a load-bearing reinforcement layer, a core layer, and an outer reinforcement layer from bottom to top; a functional coating, wherein the functional coating is applied to the top of the substrate layer, wherein the functional coating is provided with a substrate surface treatment layer, an antistatic layer, and a surface sealing coating from bottom to top; and a coating layer, wherein the coating layer is bonded to the top of the functional coating, wherein the coating layer is provided with a functional coating and a peelable protective film from bottom to top. This invention uses biodegradable natural fibers and bio-based resin to construct the substrate layer, the moisture-proof sealing layer to block moisture erosion, the ionic liquid antistatic layer to achieve stable static dissipation without electromagnetic interference, and the biodegradable conductive layer on the surface coating to ensure high X-ray transmittance. The entire material system is completely biodegradable after disposal, making it widely applicable in electronic laboratories and medical environments.

The application discloses a floating photovoltaic power generation device suitable for fish culture, which comprises a corrosion-resistant floating body, a power generation module, a sun tracking module and a self-cleaning module integrated on the floating body to form an integrated independent power supply unit, and photovoltaic panels replace high-voltage power transmission to supply power to the culture device; the sun tracking module realizes sun tracking of the photovoltaic panels through a two-degree-of-freedom deflection structure combined with intelligent control and takes into account underwater culture illumination; the self-cleaning module realizes automatic cleaning of the photovoltaic panels through cooperation of a brush / roller brush and spraying; the floating body can be used alone or composed of a power generation group, and is matched with structures such as buoyancy reinforcement, gravity center lowering and wind and wave resistance linkage, and is suitable for different scales and types of culture water areas. The application realizes on-site power consumption, eliminates hidden dangers of high-voltage power transmission, improves photovoltaic power generation efficiency, reduces operation and maintenance cost, takes into account power generation and culture ecology, and has high practicability.

The invention discloses a shape memory alloy material-based hinge which comprises a shell, an end cover is arranged at the end part of the shell, an output shaft is arranged at the central axis position of the shell, a rotor is arranged on the output shaft, a rotor cover plate is arranged on the rotor, a torsion spring is arranged on the output shaft, one torsion arm of the torsion spring is mounted on the rotor cover plate, and the other torsion arm of the torsion spring is mounted on the rotor cover plate. The other torsion arm of the torsion spring is installed on the shell, and a shape memory alloy driving spring is arranged between the shell and the rotor. When the temperature reaches the phase transition temperature of the shape memory alloy, the length of the shape memory alloy driving spring is increased, the rotor is pushed to rotate anticlockwise, the rotor drives the output shaft to rotate, and therefore rotation output is achieved. When the temperature reaches the phase change temperature of the shape memory alloy, the length of the shape memory alloy driving spring is shortened, the rotor is pushed to rotate clockwise under the torque action of the torsion spring, the rotor drives the output shaft to rotate clockwise, and therefore rotation resetting is achieved, and the technical advantages of being free of electromagnetic interference and achieving rotation driving are achieved.

The application provides a variable aperture driving motor, a camera device and an electronic device. The variable aperture driving motor comprises a base assembly, the base assembly having a receiving cavity; a lens support body, at least a part of the lens support body being movably arranged inside the receiving cavity; a vane group, a first end of the vane group being arranged at a top end of the base assembly, a second end of the vane group being connected with the lens support body, so that the second end of the vane group can rotate relative to the first end of the vane group; a vibration assembly, at least a part of the vibration assembly being arranged on the base assembly, and the vibration assembly being capable of vibrating relative to the base assembly between an initial position and a first direction and between the initial position and a second direction; and a transmission assembly, at least a part of the transmission assembly being arranged on the vibration assembly and being drivingly connected with the lens support body, the vibration assembly and the transmission assembly being capable of relative movement under the action of friction. The application solves the problem of poor use performance of the variable aperture driving device in the prior art.

The utility model discloses a sorting trolley based on linear motor relates to automatic sorting technical field of commodity circulation, including mounting bracket, the both ends fixed connection of mounting bracket have gyro wheel group, and the one end of mounting bracket is installed with electric roller, the bottom fixed setting of mounting bracket has secondary board. The utility model has the beneficial effect that: through the power supply mode that trolley collector is contacted with slide contact line, compared with wireless power supply, energy transmission efficiency is higher, and cost is lower, and there is no electromagnetic interference problem, can provide the continuous stable electric power for sorting trolley, utilize the elasticity of spring and the rotation of rotary frame, make the current collector brush can be lifted upwards by slide contact line after installation, and always adhere to slide contact line under the action of spring pressure, automatically compensate the installation error and deformation of slide contact line, guarantee the reliability and continuity of contact.

The utility model discloses a three-phase program-controlled alternating current power source, which relates to the field of three-phase program-controlled alternating current power sources and comprises a digital DSP (digital signal processor) controller + large-scale FPGA (field programmable gate array) module, a three-phase alternating current power output module, a three-phase remembered sine wave generating circuit, a touch screen, a liquid crystal display module, a low-pass filter A, a low-pass filter B and a low-pass filter C, and the touch screen and the liquid crystal display module are connected with the digital DSP controller and the large-scale FPGA module. According to the utility model, the three-phase power source adopts a DSP + FPGA technology, a large-scale FPGA with powerful and flexible functions, an internal and external phase-locked closed-loop control technology, a high-speed and high-precision D / A and a high-fidelity power amplifier to form a new-generation high-precision standard power source, the frequency stability is high, the continuity is good, the precision of output voltage and current can reach 0.01 level, and a single-phase 0-380V, three-phase three-wire, high-precision and high-precision standard power source can be provided. And the three-phase four-wire alternating current voltage is 0-380V.

The invention discloses a high-speed motor centrifugal magnetic adjusting device, which comprises a composite rotating shaft, a magnetic adjusting rotor, a rigid rotor and a magnetic adjusting device, and is characterized in that the composite rotating shaft is divided into a tooth-shaped section with circumferential transmission teeth and an optical axis section with a smooth surface, the magnetic adjusting rotor is sleeved on the tooth-shaped section and can slide along the axial direction, and the rigid rotor is fixed on the optical axis section; the magnetic adjusting devices are arranged on the end face between the magnetic adjusting rotor and the rigid rotor and evenly distributed in the circumferential direction, each magnetic adjusting device comprises a triangular groove piece, a boss piece and a tension ball, and the triangular groove pieces are fixed to the end face of the rigid rotor and provided with guide slopes to form slope sliding rails. The upper end of the boss piece is embedded into a radial groove in the bottom of the flux adjusting rotor, the lower end of the boss piece is in slope sliding fit with the guide slope, and the tension ball is arranged in a spherical cavity in the radial outer end of the boss piece and limited. Centrifugal force is generated through rotation of the tension ball, the centrifugal force is converted into axial component force through the slope sliding rail to push the magnetic field adjusting rotor to move axially, so that the magnetic field coupling strength of the motor is adjusted, and the device is suitable for a wide-speed-range high-speed motor system.

This application discloses a temperature-controlled fan control box and system, belonging to the technical field of fan control boxes. The temperature-controlled fan control box includes a housing, and a power module, a control and protection switch, a thermostat, and a relay integrated inside the housing. The power module's input terminal is connected to an external power source, and its output terminal is connected to the power input terminal of the control and protection switch. The output terminal of the control and protection switch is connected to both the thermostat's power input terminal and the relay coil's power supply terminal. The thermostat's signal output terminal is connected to the relay coil's control terminal to output a start / stop signal. The relay's normally open contact terminal is connected to the fan interface on the housing to control the fan's power supply. This application solves the problems of messy wiring, inconvenient operation, insufficient intelligence, and significant safety risks in traditional temperature-controlled fan systems. It combines integration, intelligence, and portability, making it suitable for small working environments such as laboratories.