33 results about "Structure constants" patented technology

The invention discloses a laser radar for detecting the atmosphere turbulence via a positioning sensitive detector, which relates to the refractive index structure constant profile Cn2 and atmospheric coherence length r0 of the atmosphere turbulence. In the invention, the laser radar takes a pulsed laser as the emission source, and the dual-aperture Rayleigh scattering echo received by the telescopes is focused on the positioning sensitive detector through the reflection prism, and the profile Cn2 and atmospheric coherence length r0 are obtained by micro-processing after the positioning signals are transferred to the digital signals via A / D processor.

A measurement system and method for measuring the structural constant of the imaginary part of the atmospheric refractive index, comprising: a transmitting end, a receiving end, and a data acquisition storage and processing unit; the transmitting end includes: a modulator, a driving power supply, a light emitting diode, and an emitting lens; The driving power is modulated; the receiving end includes: receiving lens, photodiode, temperature stable pad, preamplifier, detector and low-frequency amplifier; the data acquisition storage and processing unit includes: data collector, storage device and data processing module. The invention can accurately and objectively measure the structure constant of the imaginary part of the atmospheric refractive index.

A constant magnetic flux voltage regulating structure of ultrahigh voltage self-coupling power transformer, comprising a main transformer body and a voltage regulating transformer body, the main transformer body comprising a series winding (HV), a common winding (MV), an excitation voltage regulating winding (JTV) and a third winding (LV) sleeved on the same iron core, the voltage regulating transformer body comprising a voltage regulating winding (TV) and an excitation winding (JV) sleeved on the same iron core; the series winding is in serial connection with the voltage regulating winding, and is subsequently in serial connection with the common winding; the excitation voltage regulating winding is in parallel connection with the excitation winding; the excitation voltage regulating winding is provided with a voltage regulating switch (K). The self-coupling transformer can connect two ultrahigh power grids, and by utilizing a constant magnetic flux voltage regulating method does not cause a third winding voltage fluctuation and iron over-excitation, reduces the level of insulation of a voltage regulating winding, and reduces cost and difficulty in manufacturing a voltage regulating switch.

The invention relates to electronic techniques, and provides a constant-current drive circuit of an LED switching power supply. The constant-current drive circuit comprises a rectification filter circuit, a power tube, an RS flip-flop, an oscillator and an operational amplifier. Two input ends of the RS flip-flop are respectively connected with an output end of the operational amplifier and the oscillator, and a Q end of the RS flip-flop is connected with a grid of the power tube. The constant-current drive circuit of the LED switching power supply is characterized in that the operational amplifier is connected with the input ends of the RS flip-flop through a delay doubling circuit. The constant-current drive circuit of the LED switching power supply has the advantages that the delay doubling circuit is added in a loop circuit compared with an existing BUCK structured constant-current drive circuit, and enables output current to be unrelated to LED voltage, clock periods and intensity of inductance, and therefore the constant-current drive circuit is good in constant-current characteristic.

It is an object of the present invention to provide a lens before edging and a method for manufacturing the edging lens in which the cell thickness of the liquid crystal lens structure can be kept constant without substantially containing a spacer inside the edging lens. It is characterized in that it has: a first transparent substrate; a second transparent substrate; a first sealing material without gaskets; a liquid crystal layer sealed between the first transparent substrate, the second transparent substrate and the first sealing material; And the second sealing material mixed with the spacer is arranged outside the first sealing material between the first transparent substrate and the second transparent substrate and is cut off after edging.

An electric fuse structure, comprising: a substrate; a dielectric layer on the substrate; a first conductive pattern layer in the dielectric layer, a second conductive pattern layer, and a first conductive pattern layer and a second conductive pattern layer Conductive plugs between them, wherein: the first conductive pattern layer includes: at least one first electric fuse unit, and the first electric fuse unit includes: two first electrodes, and multiple electrodes located between the two first electrodes a first fuse, the first end and the second end of the first fuse are respectively connected to two first electrodes; the second conductive pattern layer includes: a second electrode, and a second fuse connected to the second electrode The wire; the conductive plug is electrically connected to the second fuse and a first fuse contact of the at least one first electric fuse unit. It solves the problem that the existing electric fuse structure cannot obtain a constant resistance value change before and after fusing, which brings inconvenience to circuit designers and brings certain limitations to circuit design.

The invention discloses a laser flasher with big diameter for measuring the structure constant of atmospheric refractivity as well as the method for that. The laser flasher comprises two opposite-arranged reflecting telescopes and lasers on the lens cones. The incident lights reach to the secondary plane mirror after being reflected by a main parabolic mirror in the lens cones, pass the openings,attenuating pieces and narrow-band interference filters on the lens cones, and then are converged on a photoelectric detector. At transmission test, two arrangements are placed at the two ends of thetransmission path; the emitting system at one end of the path gives out modulated laser signals, after being transmitted by a turbulent atmosphere, the light signals are collected by the telescope atanther end, and go through photoelectric conversion by the photoelectric multiplier near to the focus; then the electric signals enter into a built-in control system for demodulation, sampling, processing, saving and displaying. The invention is of high accuracy and improves the accuracy in the measurements.

The invention discloses a method for measuring the vertical transport flux of atmospheric aerosol mass, comprising: calculating the real part of the effective refractive index of the atmosphere according to the measured average temperature and average pressure of the atmosphere, and calculating the real part of the effective refractive index of the atmosphere and the real part of the effective refractive index of the atmosphere Calculate the imaginary part of the effective refractive index of the atmosphere according to the atmospheric visibility, and then calculate the ratio of the mass concentration of the atmospheric aerosol to the imaginary part of the effective refractive index of the atmosphere according to the change of the mass concentration of aerosol particles and the imaginary part of the effective refractive index of the atmosphere; The ratio of the real part of the atmospheric effective refractive index to the real part of the atmospheric effective refractive index, the ratio of the atmospheric aerosol mass concentration to the imaginary part of the atmospheric effective refractive index, and the structural constant of the atmospheric effective refractive index calculated by the preset method are used to calculate the vertical transport flux of the atmospheric aerosol mass. This method can realize the objective and accurate measurement of the vertical transport flux of atmospheric aerosol mass, and has good temporal and spatial representation.