6 results about "Induction effect" patented technology

The application discloses a kind of virus-like hierarchical microspheres of Cu doped SnO2 with adjustable morphology prepared by molten salt method, preparation method and application thereof.Using the strategy of template pyrolysis-molten salt synergistic regulation, CuO / SnO2 p-n heterojunction material with unique virus-like multi-level structure is successfully constructed.Firstly, pure phase SnO2 microsphere substrate is obtained by liquid phase deposition combined with calcination, then it is mixed with molten salt and copper salt, and directional induction effect of molten salt polarity environment on crystal growth is used, so that controllable epitaxial growth of SnO2 microsphere surface needle-like structure virus-like spike morphology and in-situ doping of Cu atom are realized through two-stage heat treatment, and finally virus-like hierarchical microspheres with dense needle-like protrusions on the surface are formed.When it is applied to H2S sensor, based on the "insulation-metal" phase transition effect triggered by specific reaction of CuO and H2S, the response value to 10 ppm H2S is as high as 57269 at low working temperature of 160 DEG C, which is improved by 2 orders of magnitude compared with similar materials, and it also shows excellent long-term stability (decay rate <5% for 30 days).

A kind of design method and sensor of wide-range current sensor based on magnetomotive effect, in the method, magnetomotive body is provided and the magnetomotive body is arranged between energized conductor and magnetic field sensor sensing chip;The magnetic flux density at the position of the magnetic field sensor sensing chip is reduced by the magnetomotive effect of the magnetomotive body, so that the magnetic field sensor sensing chip remains linear response in wide current range, and wide-range current measurement is realized.By the action of high magnetic permeability magnetomotive body, the magnetic flux density at the position of TMR sensing chip is significantly weakened, so that the sensor magnetic saturation phenomenon is effectively delayed.The method significantly widens the current measurement range of the sensor under the premise of maintaining small size, and realizes the breakthrough of traditional TMR current sensor in wide-range measurement field.

This application provides a steel material for reactors and a method for preparing the same. The steel material for reactors includes a steel substrate and a protective coating. The protective coating includes an in-situ oxide layer on the surface of the steel substrate and an alumina layer on the in-situ oxide layer. The in-situ oxide layer includes α-Fe₂O₃, and the alumina layer includes α-Al₂O₃. In the steel material for reactors, the α-Fe₂O₃ in the in-situ oxide layer serves as a growth template for the alumina layer. Through the mutual matching and induction effect of crystal structures, the protective coating forms a dense protective barrier on the surface of the steel substrate, effectively reducing the permeation of hydrogen and its isotopes deuterium and tritium.

The application discloses a bicycle power mechanism rotation detection method, an electronic device, an electronic system and a computer readable storage medium. The method comprises the following steps: acquiring acceleration of the power mechanism collected by an accelerometer, and / or acquiring a direction angle of the power mechanism collected by a magnetometer; and determining a first rotation number of the power mechanism based on the acceleration and / or the direction angle. The method can determine the rotation number of the power mechanism by using the acceleration collected by the accelerometer and / or the direction angle collected by the magnetometer, and does not need to detect the rotation number by recording the number of times that a magnet rotates through the position of a sensor by using a Hall effect or a magnetic induction effect. Therefore, the method not only has high anti-magnetic interference capability, but also reduces the influence of road bumps on collected data, thereby improving the accuracy of detection of a pedal frequency.

The application discloses a mosquito trapping module and a mosquito trapping device, and relates to the technical field of vector biological prevention and control. The mosquito trapping module comprises at least one chemotactic signal regulation unit for releasing a first gas containing chemotactic signal molecules; and at least one power signal driving unit for releasing a second gas, wherein the second gas has a chemotactic induction effect and can provide kinetic energy load. When the second gas is released, a directional jet flow with a preset momentum is generated. The directional jet flow actively envelopes the first gas and guides its diffusion in a local physical interference area outside the mosquito trapping module through the entrainment effect, so that the natural diffusion of the first gas is blocked and forced to converge into the core area of the directional jet flow, thereby forming a high-coherent composite gas plume in the space outside the mosquito trapping module. The mosquito trapping module can simulate the natural state of human or animal emission of CO2 and carrying of skin odor, and significantly improves the mosquito trapping efficiency.

The application provides a support seat rotating assembly and a twist machine. The support seat rotating assembly comprises a base, a support seat, a magnetic part and a first circuit board. The base is used for laying on a table top or a ground. The base is provided with a rotating seat. The support seat is rotatably connected to the base and rotates along the axis of the rotating seat. The magnetic part is installed on the rotating seat and is arranged stationary relative to the base. The first circuit board is contained in the internal space of the support seat and is installed on the support seat. The first circuit board is integrated with a Hall sensor. The Hall sensor is located on one side of the magnetic part. The Hall sensor adjusts the position along with the rotation of the support seat and has a Hall induction effect with the magnetic part. The number of rotations of the support seat relative to the base is counted through the Hall induction effect. The number of rotations of the user is counted. The number of rotations of the support seat relative to the base cannot be counted. The rotation convenience of the support seat rotating assembly is improved.